1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /**
27 * \file teximage.c
28 * Texture image-related functions.
29 */
30
31 #include <stdbool.h>
32 #include "glheader.h"
33 #include "bufferobj.h"
34 #include "context.h"
35 #include "enums.h"
36 #include "fbobject.h"
37 #include "framebuffer.h"
38 #include "hash.h"
39 #include "image.h"
40 #include "imports.h"
41 #include "macros.h"
42 #include "mfeatures.h"
43 #include "state.h"
44 #include "texcompress.h"
45 #include "texcompress_cpal.h"
46 #include "teximage.h"
47 #include "texobj.h"
48 #include "texstate.h"
49 #include "mtypes.h"
50 #include "glformats.h"
51
52
53 /* Inexplicably, GL_HALF_FLOAT_OES has a different value than GL_HALF_FLOAT.
54 */
55 #ifndef GL_HALF_FLOAT_OES
56 #define GL_HALF_FLOAT_OES 0x8D61
57 #endif
58
59 /**
60 * State changes which we care about for glCopyTex[Sub]Image() calls.
61 * In particular, we care about pixel transfer state and buffer state
62 * (such as glReadBuffer to make sure we read from the right renderbuffer).
63 */
64 #define NEW_COPY_TEX_STATE (_NEW_BUFFERS | _NEW_PIXEL)
65
66
67
68 /**
69 * Return the simple base format for a given internal texture format.
70 * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
71 *
72 * \param ctx GL context.
73 * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
74 *
75 * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
76 * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
77 *
78 * This is the format which is used during texture application (i.e. the
79 * texture format and env mode determine the arithmetic used.
80 */
81 GLint
_mesa_base_tex_format(struct gl_context * ctx,GLint internalFormat)82 _mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
83 {
84 switch (internalFormat) {
85 case GL_ALPHA:
86 case GL_ALPHA4:
87 case GL_ALPHA8:
88 case GL_ALPHA12:
89 case GL_ALPHA16:
90 return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
91 case 1:
92 case GL_LUMINANCE:
93 case GL_LUMINANCE4:
94 case GL_LUMINANCE8:
95 case GL_LUMINANCE12:
96 case GL_LUMINANCE16:
97 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
98 case 2:
99 case GL_LUMINANCE_ALPHA:
100 case GL_LUMINANCE4_ALPHA4:
101 case GL_LUMINANCE6_ALPHA2:
102 case GL_LUMINANCE8_ALPHA8:
103 case GL_LUMINANCE12_ALPHA4:
104 case GL_LUMINANCE12_ALPHA12:
105 case GL_LUMINANCE16_ALPHA16:
106 return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
107 case GL_INTENSITY:
108 case GL_INTENSITY4:
109 case GL_INTENSITY8:
110 case GL_INTENSITY12:
111 case GL_INTENSITY16:
112 return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
113 case 3:
114 return (ctx->API != API_OPENGL_CORE) ? GL_RGB : -1;
115 case GL_RGB:
116 case GL_R3_G3_B2:
117 case GL_RGB4:
118 case GL_RGB5:
119 case GL_RGB8:
120 case GL_RGB10:
121 case GL_RGB12:
122 case GL_RGB16:
123 return GL_RGB;
124 case 4:
125 return (ctx->API != API_OPENGL_CORE) ? GL_RGBA : -1;
126 case GL_RGBA:
127 case GL_RGBA2:
128 case GL_RGBA4:
129 case GL_RGB5_A1:
130 case GL_RGBA8:
131 case GL_RGB10_A2:
132 case GL_RGBA12:
133 case GL_RGBA16:
134 return GL_RGBA;
135 default:
136 ; /* fallthrough */
137 }
138
139 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
140 */
141 if (_mesa_is_gles(ctx)) {
142 switch (internalFormat) {
143 case GL_BGRA:
144 return GL_RGBA;
145 default:
146 ; /* fallthrough */
147 }
148 }
149
150 if (ctx->Extensions.ARB_ES2_compatibility) {
151 switch (internalFormat) {
152 case GL_RGB565:
153 return GL_RGB;
154 default:
155 ; /* fallthrough */
156 }
157 }
158
159 if (ctx->Extensions.ARB_depth_texture) {
160 switch (internalFormat) {
161 case GL_DEPTH_COMPONENT:
162 case GL_DEPTH_COMPONENT16:
163 case GL_DEPTH_COMPONENT24:
164 case GL_DEPTH_COMPONENT32:
165 return GL_DEPTH_COMPONENT;
166 default:
167 ; /* fallthrough */
168 }
169 }
170
171 switch (internalFormat) {
172 case GL_COMPRESSED_ALPHA:
173 return GL_ALPHA;
174 case GL_COMPRESSED_LUMINANCE:
175 return GL_LUMINANCE;
176 case GL_COMPRESSED_LUMINANCE_ALPHA:
177 return GL_LUMINANCE_ALPHA;
178 case GL_COMPRESSED_INTENSITY:
179 return GL_INTENSITY;
180 case GL_COMPRESSED_RGB:
181 return GL_RGB;
182 case GL_COMPRESSED_RGBA:
183 return GL_RGBA;
184 default:
185 ; /* fallthrough */
186 }
187
188 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
189 switch (internalFormat) {
190 case GL_COMPRESSED_RGB_FXT1_3DFX:
191 return GL_RGB;
192 case GL_COMPRESSED_RGBA_FXT1_3DFX:
193 return GL_RGBA;
194 default:
195 ; /* fallthrough */
196 }
197 }
198
199 if (ctx->Extensions.EXT_texture_compression_s3tc) {
200 switch (internalFormat) {
201 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
202 return GL_RGB;
203 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
204 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
205 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
206 return GL_RGBA;
207 default:
208 ; /* fallthrough */
209 }
210 }
211
212 if (ctx->Extensions.S3_s3tc) {
213 switch (internalFormat) {
214 case GL_RGB_S3TC:
215 case GL_RGB4_S3TC:
216 return GL_RGB;
217 case GL_RGBA_S3TC:
218 case GL_RGBA4_S3TC:
219 return GL_RGBA;
220 default:
221 ; /* fallthrough */
222 }
223 }
224
225 if (ctx->Extensions.MESA_ycbcr_texture) {
226 if (internalFormat == GL_YCBCR_MESA)
227 return GL_YCBCR_MESA;
228 }
229
230 if (ctx->Extensions.ARB_texture_float) {
231 switch (internalFormat) {
232 case GL_ALPHA16F_ARB:
233 case GL_ALPHA32F_ARB:
234 return GL_ALPHA;
235 case GL_RGBA16F_ARB:
236 case GL_RGBA32F_ARB:
237 return GL_RGBA;
238 case GL_RGB16F_ARB:
239 case GL_RGB32F_ARB:
240 return GL_RGB;
241 case GL_INTENSITY16F_ARB:
242 case GL_INTENSITY32F_ARB:
243 return GL_INTENSITY;
244 case GL_LUMINANCE16F_ARB:
245 case GL_LUMINANCE32F_ARB:
246 return GL_LUMINANCE;
247 case GL_LUMINANCE_ALPHA16F_ARB:
248 case GL_LUMINANCE_ALPHA32F_ARB:
249 return GL_LUMINANCE_ALPHA;
250 default:
251 ; /* fallthrough */
252 }
253 }
254
255 if (ctx->Extensions.ATI_envmap_bumpmap) {
256 switch (internalFormat) {
257 case GL_DUDV_ATI:
258 case GL_DU8DV8_ATI:
259 return GL_DUDV_ATI;
260 default:
261 ; /* fallthrough */
262 }
263 }
264
265 if (ctx->Extensions.EXT_texture_snorm) {
266 switch (internalFormat) {
267 case GL_RED_SNORM:
268 case GL_R8_SNORM:
269 case GL_R16_SNORM:
270 return GL_RED;
271 case GL_RG_SNORM:
272 case GL_RG8_SNORM:
273 case GL_RG16_SNORM:
274 return GL_RG;
275 case GL_RGB_SNORM:
276 case GL_RGB8_SNORM:
277 case GL_RGB16_SNORM:
278 return GL_RGB;
279 case GL_RGBA_SNORM:
280 case GL_RGBA8_SNORM:
281 case GL_RGBA16_SNORM:
282 return GL_RGBA;
283 case GL_ALPHA_SNORM:
284 case GL_ALPHA8_SNORM:
285 case GL_ALPHA16_SNORM:
286 return GL_ALPHA;
287 case GL_LUMINANCE_SNORM:
288 case GL_LUMINANCE8_SNORM:
289 case GL_LUMINANCE16_SNORM:
290 return GL_LUMINANCE;
291 case GL_LUMINANCE_ALPHA_SNORM:
292 case GL_LUMINANCE8_ALPHA8_SNORM:
293 case GL_LUMINANCE16_ALPHA16_SNORM:
294 return GL_LUMINANCE_ALPHA;
295 case GL_INTENSITY_SNORM:
296 case GL_INTENSITY8_SNORM:
297 case GL_INTENSITY16_SNORM:
298 return GL_INTENSITY;
299 default:
300 ; /* fallthrough */
301 }
302 }
303
304 if (ctx->Extensions.EXT_packed_depth_stencil) {
305 switch (internalFormat) {
306 case GL_DEPTH_STENCIL_EXT:
307 case GL_DEPTH24_STENCIL8_EXT:
308 return GL_DEPTH_STENCIL_EXT;
309 default:
310 ; /* fallthrough */
311 }
312 }
313
314 #if FEATURE_EXT_texture_sRGB
315 if (ctx->Extensions.EXT_texture_sRGB) {
316 switch (internalFormat) {
317 case GL_SRGB_EXT:
318 case GL_SRGB8_EXT:
319 case GL_COMPRESSED_SRGB_EXT:
320 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
321 return GL_RGB;
322 case GL_SRGB_ALPHA_EXT:
323 case GL_SRGB8_ALPHA8_EXT:
324 case GL_COMPRESSED_SRGB_ALPHA_EXT:
325 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
326 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
327 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
328 return GL_RGBA;
329 case GL_SLUMINANCE_ALPHA_EXT:
330 case GL_SLUMINANCE8_ALPHA8_EXT:
331 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
332 return GL_LUMINANCE_ALPHA;
333 case GL_SLUMINANCE_EXT:
334 case GL_SLUMINANCE8_EXT:
335 case GL_COMPRESSED_SLUMINANCE_EXT:
336 return GL_LUMINANCE;
337 default:
338 ; /* fallthrough */
339 }
340 }
341 #endif /* FEATURE_EXT_texture_sRGB */
342
343 if (ctx->Version >= 30 ||
344 ctx->Extensions.EXT_texture_integer) {
345 switch (internalFormat) {
346 case GL_RGBA8UI_EXT:
347 case GL_RGBA16UI_EXT:
348 case GL_RGBA32UI_EXT:
349 case GL_RGBA8I_EXT:
350 case GL_RGBA16I_EXT:
351 case GL_RGBA32I_EXT:
352 case GL_RGB10_A2UI:
353 return GL_RGBA;
354 case GL_RGB8UI_EXT:
355 case GL_RGB16UI_EXT:
356 case GL_RGB32UI_EXT:
357 case GL_RGB8I_EXT:
358 case GL_RGB16I_EXT:
359 case GL_RGB32I_EXT:
360 return GL_RGB;
361 }
362 }
363
364 if (ctx->Extensions.EXT_texture_integer) {
365 switch (internalFormat) {
366 case GL_ALPHA8UI_EXT:
367 case GL_ALPHA16UI_EXT:
368 case GL_ALPHA32UI_EXT:
369 case GL_ALPHA8I_EXT:
370 case GL_ALPHA16I_EXT:
371 case GL_ALPHA32I_EXT:
372 return GL_ALPHA;
373 case GL_INTENSITY8UI_EXT:
374 case GL_INTENSITY16UI_EXT:
375 case GL_INTENSITY32UI_EXT:
376 case GL_INTENSITY8I_EXT:
377 case GL_INTENSITY16I_EXT:
378 case GL_INTENSITY32I_EXT:
379 return GL_INTENSITY;
380 case GL_LUMINANCE8UI_EXT:
381 case GL_LUMINANCE16UI_EXT:
382 case GL_LUMINANCE32UI_EXT:
383 case GL_LUMINANCE8I_EXT:
384 case GL_LUMINANCE16I_EXT:
385 case GL_LUMINANCE32I_EXT:
386 return GL_LUMINANCE;
387 case GL_LUMINANCE_ALPHA8UI_EXT:
388 case GL_LUMINANCE_ALPHA16UI_EXT:
389 case GL_LUMINANCE_ALPHA32UI_EXT:
390 case GL_LUMINANCE_ALPHA8I_EXT:
391 case GL_LUMINANCE_ALPHA16I_EXT:
392 case GL_LUMINANCE_ALPHA32I_EXT:
393 return GL_LUMINANCE_ALPHA;
394 default:
395 ; /* fallthrough */
396 }
397 }
398
399 if (ctx->Extensions.ARB_texture_rg) {
400 switch (internalFormat) {
401 case GL_R16F:
402 /* R16F depends on both ARB_half_float_pixel and ARB_texture_float.
403 */
404 if (!ctx->Extensions.ARB_half_float_pixel)
405 break;
406 /* FALLTHROUGH */
407 case GL_R32F:
408 if (!ctx->Extensions.ARB_texture_float)
409 break;
410 return GL_RED;
411 case GL_R8I:
412 case GL_R8UI:
413 case GL_R16I:
414 case GL_R16UI:
415 case GL_R32I:
416 case GL_R32UI:
417 if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer)
418 break;
419 /* FALLTHROUGH */
420 case GL_R8:
421 case GL_R16:
422 case GL_RED:
423 case GL_COMPRESSED_RED:
424 return GL_RED;
425
426 case GL_RG16F:
427 /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float.
428 */
429 if (!ctx->Extensions.ARB_half_float_pixel)
430 break;
431 /* FALLTHROUGH */
432 case GL_RG32F:
433 if (!ctx->Extensions.ARB_texture_float)
434 break;
435 return GL_RG;
436 case GL_RG8I:
437 case GL_RG8UI:
438 case GL_RG16I:
439 case GL_RG16UI:
440 case GL_RG32I:
441 case GL_RG32UI:
442 if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer)
443 break;
444 /* FALLTHROUGH */
445 case GL_RG:
446 case GL_RG8:
447 case GL_RG16:
448 case GL_COMPRESSED_RG:
449 return GL_RG;
450 default:
451 ; /* fallthrough */
452 }
453 }
454
455 if (ctx->Extensions.EXT_texture_shared_exponent) {
456 switch (internalFormat) {
457 case GL_RGB9_E5_EXT:
458 return GL_RGB;
459 default:
460 ; /* fallthrough */
461 }
462 }
463
464 if (ctx->Extensions.EXT_packed_float) {
465 switch (internalFormat) {
466 case GL_R11F_G11F_B10F_EXT:
467 return GL_RGB;
468 default:
469 ; /* fallthrough */
470 }
471 }
472
473 if (ctx->Extensions.ARB_depth_buffer_float) {
474 switch (internalFormat) {
475 case GL_DEPTH_COMPONENT32F:
476 return GL_DEPTH_COMPONENT;
477 case GL_DEPTH32F_STENCIL8:
478 return GL_DEPTH_STENCIL;
479 default:
480 ; /* fallthrough */
481 }
482 }
483
484 if (ctx->Extensions.ARB_texture_compression_rgtc) {
485 switch (internalFormat) {
486 case GL_COMPRESSED_RED_RGTC1:
487 case GL_COMPRESSED_SIGNED_RED_RGTC1:
488 return GL_RED;
489 case GL_COMPRESSED_RG_RGTC2:
490 case GL_COMPRESSED_SIGNED_RG_RGTC2:
491 return GL_RG;
492 default:
493 ; /* fallthrough */
494 }
495 }
496
497 if (ctx->Extensions.EXT_texture_compression_latc) {
498 switch (internalFormat) {
499 case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
500 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
501 return GL_LUMINANCE;
502 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
503 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
504 return GL_LUMINANCE_ALPHA;
505 default:
506 ; /* fallthrough */
507 }
508 }
509
510 if (ctx->Extensions.ATI_texture_compression_3dc) {
511 switch (internalFormat) {
512 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
513 return GL_LUMINANCE_ALPHA;
514 default:
515 ; /* fallthrough */
516 }
517 }
518
519 if (ctx->Extensions.OES_compressed_ETC1_RGB8_texture) {
520 switch (internalFormat) {
521 case GL_ETC1_RGB8_OES:
522 return GL_RGB;
523 default:
524 ; /* fallthrough */
525 }
526 }
527
528 if (ctx->API == API_OPENGLES) {
529 switch (internalFormat) {
530 case GL_PALETTE4_RGB8_OES:
531 case GL_PALETTE4_R5_G6_B5_OES:
532 case GL_PALETTE8_RGB8_OES:
533 case GL_PALETTE8_R5_G6_B5_OES:
534 return GL_RGB;
535 case GL_PALETTE4_RGBA8_OES:
536 case GL_PALETTE8_RGB5_A1_OES:
537 case GL_PALETTE4_RGBA4_OES:
538 case GL_PALETTE4_RGB5_A1_OES:
539 case GL_PALETTE8_RGBA8_OES:
540 case GL_PALETTE8_RGBA4_OES:
541 return GL_RGBA;
542 default:
543 ; /* fallthrough */
544 }
545 }
546
547 return -1; /* error */
548 }
549
550
551 /**
552 * For cube map faces, return a face index in [0,5].
553 * For other targets return 0;
554 */
555 GLuint
_mesa_tex_target_to_face(GLenum target)556 _mesa_tex_target_to_face(GLenum target)
557 {
558 if (_mesa_is_cube_face(target))
559 return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
560 else
561 return 0;
562 }
563
564
565
566 /**
567 * Install gl_texture_image in a gl_texture_object according to the target
568 * and level parameters.
569 *
570 * \param tObj texture object.
571 * \param target texture target.
572 * \param level image level.
573 * \param texImage texture image.
574 */
575 static void
set_tex_image(struct gl_texture_object * tObj,GLenum target,GLint level,struct gl_texture_image * texImage)576 set_tex_image(struct gl_texture_object *tObj,
577 GLenum target, GLint level,
578 struct gl_texture_image *texImage)
579 {
580 const GLuint face = _mesa_tex_target_to_face(target);
581
582 ASSERT(tObj);
583 ASSERT(texImage);
584 if (target == GL_TEXTURE_RECTANGLE_NV || target == GL_TEXTURE_EXTERNAL_OES)
585 assert(level == 0);
586
587 tObj->Image[face][level] = texImage;
588
589 /* Set the 'back' pointer */
590 texImage->TexObject = tObj;
591 texImage->Level = level;
592 texImage->Face = face;
593 }
594
595
596 /**
597 * Allocate a texture image structure.
598 *
599 * Called via ctx->Driver.NewTextureImage() unless overriden by a device
600 * driver.
601 *
602 * \return a pointer to gl_texture_image struct with all fields initialized to
603 * zero.
604 */
605 struct gl_texture_image *
_mesa_new_texture_image(struct gl_context * ctx)606 _mesa_new_texture_image( struct gl_context *ctx )
607 {
608 (void) ctx;
609 return CALLOC_STRUCT(gl_texture_image);
610 }
611
612
613 /**
614 * Free a gl_texture_image and associated data.
615 * This function is a fallback called via ctx->Driver.DeleteTextureImage().
616 *
617 * \param texImage texture image.
618 *
619 * Free the texture image structure and the associated image data.
620 */
621 void
_mesa_delete_texture_image(struct gl_context * ctx,struct gl_texture_image * texImage)622 _mesa_delete_texture_image(struct gl_context *ctx,
623 struct gl_texture_image *texImage)
624 {
625 /* Free texImage->Data and/or any other driver-specific texture
626 * image storage.
627 */
628 ASSERT(ctx->Driver.FreeTextureImageBuffer);
629 ctx->Driver.FreeTextureImageBuffer( ctx, texImage );
630 free(texImage);
631 }
632
633
634 /**
635 * Test if a target is a proxy target.
636 *
637 * \param target texture target.
638 *
639 * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise.
640 */
641 GLboolean
_mesa_is_proxy_texture(GLenum target)642 _mesa_is_proxy_texture(GLenum target)
643 {
644 /*
645 * NUM_TEXTURE_TARGETS should match number of terms below, except there's no
646 * proxy for GL_TEXTURE_BUFFER and GL_TEXTURE_EXTERNAL_OES.
647 */
648 assert(NUM_TEXTURE_TARGETS == 7 + 2);
649
650 return (target == GL_PROXY_TEXTURE_1D ||
651 target == GL_PROXY_TEXTURE_2D ||
652 target == GL_PROXY_TEXTURE_3D ||
653 target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||
654 target == GL_PROXY_TEXTURE_RECTANGLE_NV ||
655 target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||
656 target == GL_PROXY_TEXTURE_2D_ARRAY_EXT);
657 }
658
659
660 /**
661 * Return the proxy target which corresponds to the given texture target
662 */
663 GLenum
_mesa_get_proxy_target(GLenum target)664 _mesa_get_proxy_target(GLenum target)
665 {
666 switch (target) {
667 case GL_TEXTURE_1D:
668 case GL_PROXY_TEXTURE_1D:
669 return GL_PROXY_TEXTURE_1D;
670 case GL_TEXTURE_2D:
671 case GL_PROXY_TEXTURE_2D:
672 return GL_PROXY_TEXTURE_2D;
673 case GL_TEXTURE_3D:
674 case GL_PROXY_TEXTURE_3D:
675 return GL_PROXY_TEXTURE_3D;
676 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
677 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
678 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
679 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
680 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
681 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
682 case GL_TEXTURE_CUBE_MAP_ARB:
683 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
684 return GL_PROXY_TEXTURE_CUBE_MAP_ARB;
685 case GL_TEXTURE_RECTANGLE_NV:
686 case GL_PROXY_TEXTURE_RECTANGLE_NV:
687 return GL_PROXY_TEXTURE_RECTANGLE_NV;
688 case GL_TEXTURE_1D_ARRAY_EXT:
689 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
690 return GL_PROXY_TEXTURE_1D_ARRAY_EXT;
691 case GL_TEXTURE_2D_ARRAY_EXT:
692 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
693 return GL_PROXY_TEXTURE_2D_ARRAY_EXT;
694 default:
695 _mesa_problem(NULL, "unexpected target in _mesa_get_proxy_target()");
696 return 0;
697 }
698 }
699
700
701 /**
702 * Get the texture object that corresponds to the target of the given
703 * texture unit. The target should have already been checked for validity.
704 *
705 * \param ctx GL context.
706 * \param texUnit texture unit.
707 * \param target texture target.
708 *
709 * \return pointer to the texture object on success, or NULL on failure.
710 */
711 struct gl_texture_object *
_mesa_select_tex_object(struct gl_context * ctx,const struct gl_texture_unit * texUnit,GLenum target)712 _mesa_select_tex_object(struct gl_context *ctx,
713 const struct gl_texture_unit *texUnit,
714 GLenum target)
715 {
716 const GLboolean arrayTex = (ctx->Extensions.MESA_texture_array ||
717 ctx->Extensions.EXT_texture_array);
718
719 switch (target) {
720 case GL_TEXTURE_1D:
721 return texUnit->CurrentTex[TEXTURE_1D_INDEX];
722 case GL_PROXY_TEXTURE_1D:
723 return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX];
724 case GL_TEXTURE_2D:
725 return texUnit->CurrentTex[TEXTURE_2D_INDEX];
726 case GL_PROXY_TEXTURE_2D:
727 return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX];
728 case GL_TEXTURE_3D:
729 return texUnit->CurrentTex[TEXTURE_3D_INDEX];
730 case GL_PROXY_TEXTURE_3D:
731 return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX];
732 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
733 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
734 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
735 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
736 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
737 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
738 case GL_TEXTURE_CUBE_MAP_ARB:
739 return ctx->Extensions.ARB_texture_cube_map
740 ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL;
741 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
742 return ctx->Extensions.ARB_texture_cube_map
743 ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL;
744 case GL_TEXTURE_RECTANGLE_NV:
745 return ctx->Extensions.NV_texture_rectangle
746 ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL;
747 case GL_PROXY_TEXTURE_RECTANGLE_NV:
748 return ctx->Extensions.NV_texture_rectangle
749 ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL;
750 case GL_TEXTURE_1D_ARRAY_EXT:
751 return arrayTex ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
752 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
753 return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
754 case GL_TEXTURE_2D_ARRAY_EXT:
755 return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
756 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
757 return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
758 case GL_TEXTURE_BUFFER:
759 return _mesa_is_desktop_gl(ctx)
760 && ctx->Extensions.ARB_texture_buffer_object
761 ? texUnit->CurrentTex[TEXTURE_BUFFER_INDEX] : NULL;
762 case GL_TEXTURE_EXTERNAL_OES:
763 return ctx->Extensions.OES_EGL_image_external
764 ? texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX] : NULL;
765 default:
766 _mesa_problem(NULL, "bad target in _mesa_select_tex_object()");
767 return NULL;
768 }
769 }
770
771
772 /**
773 * Return pointer to texture object for given target on current texture unit.
774 */
775 struct gl_texture_object *
_mesa_get_current_tex_object(struct gl_context * ctx,GLenum target)776 _mesa_get_current_tex_object(struct gl_context *ctx, GLenum target)
777 {
778 struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
779 return _mesa_select_tex_object(ctx, texUnit, target);
780 }
781
782
783 /**
784 * Get a texture image pointer from a texture object, given a texture
785 * target and mipmap level. The target and level parameters should
786 * have already been error-checked.
787 *
788 * \param ctx GL context.
789 * \param texObj texture unit.
790 * \param target texture target.
791 * \param level image level.
792 *
793 * \return pointer to the texture image structure, or NULL on failure.
794 */
795 struct gl_texture_image *
_mesa_select_tex_image(struct gl_context * ctx,const struct gl_texture_object * texObj,GLenum target,GLint level)796 _mesa_select_tex_image(struct gl_context *ctx,
797 const struct gl_texture_object *texObj,
798 GLenum target, GLint level)
799 {
800 const GLuint face = _mesa_tex_target_to_face(target);
801
802 ASSERT(texObj);
803 ASSERT(level >= 0);
804 ASSERT(level < MAX_TEXTURE_LEVELS);
805
806 return texObj->Image[face][level];
807 }
808
809
810 /**
811 * Like _mesa_select_tex_image() but if the image doesn't exist, allocate
812 * it and install it. Only return NULL if passed a bad parameter or run
813 * out of memory.
814 */
815 struct gl_texture_image *
_mesa_get_tex_image(struct gl_context * ctx,struct gl_texture_object * texObj,GLenum target,GLint level)816 _mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj,
817 GLenum target, GLint level)
818 {
819 struct gl_texture_image *texImage;
820
821 if (!texObj)
822 return NULL;
823
824 texImage = _mesa_select_tex_image(ctx, texObj, target, level);
825 if (!texImage) {
826 texImage = ctx->Driver.NewTextureImage(ctx);
827 if (!texImage) {
828 _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation");
829 return NULL;
830 }
831
832 set_tex_image(texObj, target, level, texImage);
833 }
834
835 return texImage;
836 }
837
838
839 /**
840 * Return pointer to the specified proxy texture image.
841 * Note that proxy textures are per-context, not per-texture unit.
842 * \return pointer to texture image or NULL if invalid target, invalid
843 * level, or out of memory.
844 */
845 static struct gl_texture_image *
get_proxy_tex_image(struct gl_context * ctx,GLenum target,GLint level)846 get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level)
847 {
848 struct gl_texture_image *texImage;
849 GLuint texIndex;
850
851 if (level < 0)
852 return NULL;
853
854 switch (target) {
855 case GL_PROXY_TEXTURE_1D:
856 if (level >= ctx->Const.MaxTextureLevels)
857 return NULL;
858 texIndex = TEXTURE_1D_INDEX;
859 break;
860 case GL_PROXY_TEXTURE_2D:
861 if (level >= ctx->Const.MaxTextureLevels)
862 return NULL;
863 texIndex = TEXTURE_2D_INDEX;
864 break;
865 case GL_PROXY_TEXTURE_3D:
866 if (level >= ctx->Const.Max3DTextureLevels)
867 return NULL;
868 texIndex = TEXTURE_3D_INDEX;
869 break;
870 case GL_PROXY_TEXTURE_CUBE_MAP:
871 if (level >= ctx->Const.MaxCubeTextureLevels)
872 return NULL;
873 texIndex = TEXTURE_CUBE_INDEX;
874 break;
875 case GL_PROXY_TEXTURE_RECTANGLE_NV:
876 if (level > 0)
877 return NULL;
878 texIndex = TEXTURE_RECT_INDEX;
879 break;
880 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
881 if (level >= ctx->Const.MaxTextureLevels)
882 return NULL;
883 texIndex = TEXTURE_1D_ARRAY_INDEX;
884 break;
885 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
886 if (level >= ctx->Const.MaxTextureLevels)
887 return NULL;
888 texIndex = TEXTURE_2D_ARRAY_INDEX;
889 break;
890 default:
891 return NULL;
892 }
893
894 texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level];
895 if (!texImage) {
896 texImage = ctx->Driver.NewTextureImage(ctx);
897 if (!texImage) {
898 _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");
899 return NULL;
900 }
901 ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage;
902 /* Set the 'back' pointer */
903 texImage->TexObject = ctx->Texture.ProxyTex[texIndex];
904 }
905 return texImage;
906 }
907
908
909 /**
910 * Get the maximum number of allowed mipmap levels.
911 *
912 * \param ctx GL context.
913 * \param target texture target.
914 *
915 * \return the maximum number of allowed mipmap levels for the given
916 * texture target, or zero if passed a bad target.
917 *
918 * \sa gl_constants.
919 */
920 GLint
_mesa_max_texture_levels(struct gl_context * ctx,GLenum target)921 _mesa_max_texture_levels(struct gl_context *ctx, GLenum target)
922 {
923 switch (target) {
924 case GL_TEXTURE_1D:
925 case GL_PROXY_TEXTURE_1D:
926 case GL_TEXTURE_2D:
927 case GL_PROXY_TEXTURE_2D:
928 return ctx->Const.MaxTextureLevels;
929 case GL_TEXTURE_3D:
930 case GL_PROXY_TEXTURE_3D:
931 return ctx->Const.Max3DTextureLevels;
932 case GL_TEXTURE_CUBE_MAP:
933 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
934 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
935 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
936 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
937 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
938 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
939 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
940 return ctx->Extensions.ARB_texture_cube_map
941 ? ctx->Const.MaxCubeTextureLevels : 0;
942 case GL_TEXTURE_RECTANGLE_NV:
943 case GL_PROXY_TEXTURE_RECTANGLE_NV:
944 return ctx->Extensions.NV_texture_rectangle ? 1 : 0;
945 case GL_TEXTURE_1D_ARRAY_EXT:
946 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
947 case GL_TEXTURE_2D_ARRAY_EXT:
948 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
949 return (ctx->Extensions.MESA_texture_array ||
950 ctx->Extensions.EXT_texture_array)
951 ? ctx->Const.MaxTextureLevels : 0;
952 case GL_TEXTURE_BUFFER:
953 return _mesa_is_desktop_gl(ctx)
954 && ctx->Extensions.ARB_texture_buffer_object
955 ? 1 : 0;
956 case GL_TEXTURE_EXTERNAL_OES:
957 /* fall-through */
958 default:
959 return 0; /* bad target */
960 }
961 }
962
963
964 /**
965 * Return number of dimensions per mipmap level for the given texture target.
966 */
967 GLint
_mesa_get_texture_dimensions(GLenum target)968 _mesa_get_texture_dimensions(GLenum target)
969 {
970 switch (target) {
971 case GL_TEXTURE_1D:
972 case GL_PROXY_TEXTURE_1D:
973 return 1;
974 case GL_TEXTURE_2D:
975 case GL_TEXTURE_RECTANGLE:
976 case GL_TEXTURE_CUBE_MAP:
977 case GL_PROXY_TEXTURE_2D:
978 case GL_PROXY_TEXTURE_RECTANGLE:
979 case GL_PROXY_TEXTURE_CUBE_MAP:
980 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
981 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
982 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
983 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
984 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
985 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
986 case GL_TEXTURE_1D_ARRAY:
987 case GL_PROXY_TEXTURE_1D_ARRAY:
988 case GL_TEXTURE_EXTERNAL_OES:
989 return 2;
990 case GL_TEXTURE_3D:
991 case GL_PROXY_TEXTURE_3D:
992 case GL_TEXTURE_2D_ARRAY:
993 case GL_PROXY_TEXTURE_2D_ARRAY:
994 return 3;
995 case GL_TEXTURE_BUFFER:
996 /* fall-through */
997 default:
998 _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()",
999 target);
1000 return 2;
1001 }
1002 }
1003
1004
1005 /**
1006 * Return the maximum number of mipmap levels for the given target
1007 * and the dimensions.
1008 * The dimensions are expected not to include the border.
1009 */
1010 GLsizei
_mesa_get_tex_max_num_levels(GLenum target,GLsizei width,GLsizei height,GLsizei depth)1011 _mesa_get_tex_max_num_levels(GLenum target, GLsizei width, GLsizei height,
1012 GLsizei depth)
1013 {
1014 GLsizei size;
1015
1016 switch (target) {
1017 case GL_TEXTURE_1D:
1018 case GL_TEXTURE_1D_ARRAY:
1019 size = width;
1020 break;
1021 case GL_TEXTURE_CUBE_MAP:
1022 case GL_TEXTURE_CUBE_MAP_ARRAY:
1023 ASSERT(width == height);
1024 size = width;
1025 break;
1026 case GL_TEXTURE_2D:
1027 case GL_TEXTURE_2D_ARRAY:
1028 size = MAX2(width, height);
1029 break;
1030 case GL_TEXTURE_3D:
1031 size = MAX3(width, height, depth);
1032 break;
1033 case GL_TEXTURE_RECTANGLE:
1034 return 1;
1035 default:
1036 assert(0);
1037 return 1;
1038 }
1039
1040 return _mesa_logbase2(size) + 1;
1041 }
1042
1043
1044 #if 000 /* not used anymore */
1045 /*
1046 * glTexImage[123]D can accept a NULL image pointer. In this case we
1047 * create a texture image with unspecified image contents per the OpenGL
1048 * spec.
1049 */
1050 static GLubyte *
1051 make_null_texture(GLint width, GLint height, GLint depth, GLenum format)
1052 {
1053 const GLint components = _mesa_components_in_format(format);
1054 const GLint numPixels = width * height * depth;
1055 GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte));
1056
1057 #ifdef DEBUG
1058 /*
1059 * Let's see if anyone finds this. If glTexImage2D() is called with
1060 * a NULL image pointer then load the texture image with something
1061 * interesting instead of leaving it indeterminate.
1062 */
1063 if (data) {
1064 static const char message[8][32] = {
1065 " X X XXXXX XXX X ",
1066 " XX XX X X X X X ",
1067 " X X X X X X X ",
1068 " X X XXXX XXX XXXXX ",
1069 " X X X X X X ",
1070 " X X X X X X X ",
1071 " X X XXXXX XXX X X ",
1072 " "
1073 };
1074
1075 GLubyte *imgPtr = data;
1076 GLint h, i, j, k;
1077 for (h = 0; h < depth; h++) {
1078 for (i = 0; i < height; i++) {
1079 GLint srcRow = 7 - (i % 8);
1080 for (j = 0; j < width; j++) {
1081 GLint srcCol = j % 32;
1082 GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70;
1083 for (k = 0; k < components; k++) {
1084 *imgPtr++ = texel;
1085 }
1086 }
1087 }
1088 }
1089 }
1090 #endif
1091
1092 return data;
1093 }
1094 #endif
1095
1096
1097
1098 /**
1099 * Set the size and format-related fields of a gl_texture_image struct
1100 * to zero. This is used when a proxy texture test fails.
1101 */
1102 static void
clear_teximage_fields(struct gl_texture_image * img)1103 clear_teximage_fields(struct gl_texture_image *img)
1104 {
1105 ASSERT(img);
1106 img->_BaseFormat = 0;
1107 img->InternalFormat = 0;
1108 img->Border = 0;
1109 img->Width = 0;
1110 img->Height = 0;
1111 img->Depth = 0;
1112 img->Width2 = 0;
1113 img->Height2 = 0;
1114 img->Depth2 = 0;
1115 img->WidthLog2 = 0;
1116 img->HeightLog2 = 0;
1117 img->DepthLog2 = 0;
1118 img->TexFormat = MESA_FORMAT_NONE;
1119 }
1120
1121
1122 /**
1123 * Initialize basic fields of the gl_texture_image struct.
1124 *
1125 * \param ctx GL context.
1126 * \param img texture image structure to be initialized.
1127 * \param width image width.
1128 * \param height image height.
1129 * \param depth image depth.
1130 * \param border image border.
1131 * \param internalFormat internal format.
1132 * \param format the actual hardware format (one of MESA_FORMAT_*)
1133 *
1134 * Fills in the fields of \p img with the given information.
1135 * Note: width, height and depth include the border.
1136 */
1137 void
_mesa_init_teximage_fields(struct gl_context * ctx,struct gl_texture_image * img,GLsizei width,GLsizei height,GLsizei depth,GLint border,GLenum internalFormat,gl_format format)1138 _mesa_init_teximage_fields(struct gl_context *ctx,
1139 struct gl_texture_image *img,
1140 GLsizei width, GLsizei height, GLsizei depth,
1141 GLint border, GLenum internalFormat,
1142 gl_format format)
1143 {
1144 GLenum target;
1145 ASSERT(img);
1146 ASSERT(width >= 0);
1147 ASSERT(height >= 0);
1148 ASSERT(depth >= 0);
1149
1150 target = img->TexObject->Target;
1151 img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );
1152 ASSERT(img->_BaseFormat > 0);
1153 img->InternalFormat = internalFormat;
1154 img->Border = border;
1155 img->Width = width;
1156 img->Height = height;
1157 img->Depth = depth;
1158
1159 img->Width2 = width - 2 * border; /* == 1 << img->WidthLog2; */
1160 img->WidthLog2 = _mesa_logbase2(img->Width2);
1161
1162 switch(target) {
1163 case GL_TEXTURE_1D:
1164 case GL_TEXTURE_BUFFER:
1165 case GL_PROXY_TEXTURE_1D:
1166 if (height == 0)
1167 img->Height2 = 0;
1168 else
1169 img->Height2 = 1;
1170 img->HeightLog2 = 0;
1171 if (depth == 0)
1172 img->Depth2 = 0;
1173 else
1174 img->Depth2 = 1;
1175 img->DepthLog2 = 0;
1176 break;
1177 case GL_TEXTURE_1D_ARRAY:
1178 case GL_PROXY_TEXTURE_1D_ARRAY:
1179 img->Height2 = height; /* no border */
1180 img->HeightLog2 = 0; /* not used */
1181 if (depth == 0)
1182 img->Depth2 = 0;
1183 else
1184 img->Depth2 = 1;
1185 img->DepthLog2 = 0;
1186 break;
1187 case GL_TEXTURE_2D:
1188 case GL_TEXTURE_RECTANGLE:
1189 case GL_TEXTURE_CUBE_MAP:
1190 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1191 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1192 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1193 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1194 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1195 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1196 case GL_TEXTURE_EXTERNAL_OES:
1197 case GL_PROXY_TEXTURE_2D:
1198 case GL_PROXY_TEXTURE_RECTANGLE:
1199 case GL_PROXY_TEXTURE_CUBE_MAP:
1200 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
1201 img->HeightLog2 = _mesa_logbase2(img->Height2);
1202 if (depth == 0)
1203 img->Depth2 = 0;
1204 else
1205 img->Depth2 = 1;
1206 img->DepthLog2 = 0;
1207 break;
1208 case GL_TEXTURE_2D_ARRAY:
1209 case GL_PROXY_TEXTURE_2D_ARRAY:
1210 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
1211 img->HeightLog2 = _mesa_logbase2(img->Height2);
1212 img->Depth2 = depth; /* no border */
1213 img->DepthLog2 = 0; /* not used */
1214 break;
1215 case GL_TEXTURE_3D:
1216 case GL_PROXY_TEXTURE_3D:
1217 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
1218 img->HeightLog2 = _mesa_logbase2(img->Height2);
1219 img->Depth2 = depth - 2 * border; /* == 1 << img->DepthLog2; */
1220 img->DepthLog2 = _mesa_logbase2(img->Depth2);
1221 break;
1222 default:
1223 _mesa_problem(NULL, "invalid target 0x%x in _mesa_init_teximage_fields()",
1224 target);
1225 }
1226
1227 img->MaxNumLevels =
1228 _mesa_get_tex_max_num_levels(target,
1229 img->Width2, img->Height2, img->Depth2);
1230 img->TexFormat = format;
1231 }
1232
1233
1234 /**
1235 * Free and clear fields of the gl_texture_image struct.
1236 *
1237 * \param ctx GL context.
1238 * \param texImage texture image structure to be cleared.
1239 *
1240 * After the call, \p texImage will have no data associated with it. Its
1241 * fields are cleared so that its parent object will test incomplete.
1242 */
1243 void
_mesa_clear_texture_image(struct gl_context * ctx,struct gl_texture_image * texImage)1244 _mesa_clear_texture_image(struct gl_context *ctx,
1245 struct gl_texture_image *texImage)
1246 {
1247 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
1248 clear_teximage_fields(texImage);
1249 }
1250
1251
1252 /**
1253 * This is the fallback for Driver.TestProxyTexImage(). Test the texture
1254 * level, width, height and depth against the ctx->Const limits for textures.
1255 *
1256 * A hardware driver might override this function if, for example, the
1257 * max 3D texture size is 512x512x64 (i.e. not a cube).
1258 *
1259 * Note that width, height, depth == 0 is not an error. However, a
1260 * texture with zero width/height/depth will be considered "incomplete"
1261 * and texturing will effectively be disabled.
1262 *
1263 * \param target one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D,
1264 * GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV,
1265 * GL_PROXY_TEXTURE_CUBE_MAP_ARB.
1266 * \param level as passed to glTexImage
1267 * \param internalFormat as passed to glTexImage
1268 * \param format as passed to glTexImage
1269 * \param type as passed to glTexImage
1270 * \param width as passed to glTexImage
1271 * \param height as passed to glTexImage
1272 * \param depth as passed to glTexImage
1273 * \param border as passed to glTexImage
1274 * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable.
1275 */
1276 GLboolean
_mesa_test_proxy_teximage(struct gl_context * ctx,GLenum target,GLint level,GLint internalFormat,GLenum format,GLenum type,GLint width,GLint height,GLint depth,GLint border)1277 _mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level,
1278 GLint internalFormat, GLenum format, GLenum type,
1279 GLint width, GLint height, GLint depth, GLint border)
1280 {
1281 GLint maxSize;
1282
1283 (void) internalFormat;
1284 (void) format;
1285 (void) type;
1286
1287 switch (target) {
1288 case GL_PROXY_TEXTURE_1D:
1289 if (level >= ctx->Const.MaxTextureLevels)
1290 return GL_FALSE;
1291 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); /* level zero size */
1292 maxSize >>= level; /* level size */
1293 if (width < 2 * border || width > 2 * border + maxSize)
1294 return GL_FALSE;
1295 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1296 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1297 return GL_FALSE;
1298 }
1299 return GL_TRUE;
1300
1301 case GL_PROXY_TEXTURE_2D:
1302 if (level >= ctx->Const.MaxTextureLevels)
1303 return GL_FALSE;
1304 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
1305 maxSize >>= level;
1306 if (width < 2 * border || width > 2 * border + maxSize)
1307 return GL_FALSE;
1308 if (height < 2 * border || height > 2 * border + maxSize)
1309 return GL_FALSE;
1310 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1311 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1312 return GL_FALSE;
1313 if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
1314 return GL_FALSE;
1315 }
1316 return GL_TRUE;
1317
1318 case GL_PROXY_TEXTURE_3D:
1319 if (level >= ctx->Const.Max3DTextureLevels)
1320 return GL_FALSE;
1321 maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
1322 maxSize >>= level;
1323 if (width < 2 * border || width > 2 * border + maxSize)
1324 return GL_FALSE;
1325 if (height < 2 * border || height > 2 * border + maxSize)
1326 return GL_FALSE;
1327 if (depth < 2 * border || depth > 2 * border + maxSize)
1328 return GL_FALSE;
1329 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1330 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1331 return GL_FALSE;
1332 if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
1333 return GL_FALSE;
1334 if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border))
1335 return GL_FALSE;
1336 }
1337 return GL_TRUE;
1338
1339 case GL_PROXY_TEXTURE_RECTANGLE_NV:
1340 if (level != 0)
1341 return GL_FALSE;
1342 maxSize = ctx->Const.MaxTextureRectSize;
1343 if (width < 0 || width > maxSize)
1344 return GL_FALSE;
1345 if (height < 0 || height > maxSize)
1346 return GL_FALSE;
1347 return GL_TRUE;
1348
1349 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1350 if (level >= ctx->Const.MaxCubeTextureLevels)
1351 return GL_FALSE;
1352 maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);
1353 maxSize >>= level;
1354 if (width < 2 * border || width > 2 * border + maxSize)
1355 return GL_FALSE;
1356 if (height < 2 * border || height > 2 * border + maxSize)
1357 return GL_FALSE;
1358 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1359 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1360 return GL_FALSE;
1361 if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
1362 return GL_FALSE;
1363 }
1364 return GL_TRUE;
1365
1366 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1367 if (level >= ctx->Const.MaxTextureLevels)
1368 return GL_FALSE;
1369 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
1370 maxSize >>= level;
1371 if (width < 2 * border || width > 2 * border + maxSize)
1372 return GL_FALSE;
1373 if (height < 1 || height > ctx->Const.MaxArrayTextureLayers)
1374 return GL_FALSE;
1375 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1376 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1377 return GL_FALSE;
1378 }
1379 return GL_TRUE;
1380
1381 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1382 if (level >= ctx->Const.MaxTextureLevels)
1383 return GL_FALSE;
1384 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
1385 maxSize >>= level;
1386 if (width < 2 * border || width > 2 * border + maxSize)
1387 return GL_FALSE;
1388 if (height < 2 * border || height > 2 * border + maxSize)
1389 return GL_FALSE;
1390 if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers)
1391 return GL_FALSE;
1392 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1393 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1394 return GL_FALSE;
1395 if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
1396 return GL_FALSE;
1397 }
1398 return GL_TRUE;
1399
1400 default:
1401 _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage");
1402 return GL_FALSE;
1403 }
1404 }
1405
1406
1407 /**
1408 * Check if the memory used by the texture would exceed the driver's limit.
1409 * This lets us support a max 3D texture size of 8K (for example) but
1410 * prevents allocating a full 8K x 8K x 8K texture.
1411 * XXX this could be rolled into the proxy texture size test (above) but
1412 * we don't have the actual texture internal format at that point.
1413 */
1414 static GLboolean
legal_texture_size(struct gl_context * ctx,gl_format format,GLint width,GLint height,GLint depth)1415 legal_texture_size(struct gl_context *ctx, gl_format format,
1416 GLint width, GLint height, GLint depth)
1417 {
1418 uint64_t bytes = _mesa_format_image_size64(format, width, height, depth);
1419 uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */
1420 return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes;
1421 }
1422
1423
1424 /**
1425 * Return true if the format is only valid for glCompressedTexImage.
1426 */
1427 static GLboolean
compressedteximage_only_format(const struct gl_context * ctx,GLenum format)1428 compressedteximage_only_format(const struct gl_context *ctx, GLenum format)
1429 {
1430 switch (format) {
1431 case GL_ETC1_RGB8_OES:
1432 case GL_PALETTE4_RGB8_OES:
1433 case GL_PALETTE4_RGBA8_OES:
1434 case GL_PALETTE4_R5_G6_B5_OES:
1435 case GL_PALETTE4_RGBA4_OES:
1436 case GL_PALETTE4_RGB5_A1_OES:
1437 case GL_PALETTE8_RGB8_OES:
1438 case GL_PALETTE8_RGBA8_OES:
1439 case GL_PALETTE8_R5_G6_B5_OES:
1440 case GL_PALETTE8_RGBA4_OES:
1441 case GL_PALETTE8_RGB5_A1_OES:
1442 return GL_TRUE;
1443 default:
1444 return GL_FALSE;
1445 }
1446 }
1447
1448
1449 /**
1450 * Helper function to determine whether a target and specific compression
1451 * format are supported.
1452 */
1453 static GLboolean
target_can_be_compressed(const struct gl_context * ctx,GLenum target,GLenum intFormat)1454 target_can_be_compressed(const struct gl_context *ctx, GLenum target,
1455 GLenum intFormat)
1456 {
1457 (void) intFormat; /* not used yet */
1458
1459 switch (target) {
1460 case GL_TEXTURE_2D:
1461 case GL_PROXY_TEXTURE_2D:
1462 return GL_TRUE; /* true for any compressed format so far */
1463 case GL_PROXY_TEXTURE_CUBE_MAP:
1464 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1465 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1466 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1467 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1468 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1469 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1470 return ctx->Extensions.ARB_texture_cube_map;
1471 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1472 case GL_TEXTURE_2D_ARRAY_EXT:
1473 return (ctx->Extensions.MESA_texture_array ||
1474 ctx->Extensions.EXT_texture_array);
1475 default:
1476 return GL_FALSE;
1477 }
1478 }
1479
1480
1481 /**
1482 * Check if the given texture target value is legal for a
1483 * glTexImage1/2/3D call.
1484 */
1485 static GLboolean
legal_teximage_target(struct gl_context * ctx,GLuint dims,GLenum target)1486 legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target)
1487 {
1488 switch (dims) {
1489 case 1:
1490 switch (target) {
1491 case GL_TEXTURE_1D:
1492 case GL_PROXY_TEXTURE_1D:
1493 return _mesa_is_desktop_gl(ctx);
1494 default:
1495 return GL_FALSE;
1496 }
1497 case 2:
1498 switch (target) {
1499 case GL_TEXTURE_2D:
1500 return GL_TRUE;
1501 case GL_PROXY_TEXTURE_2D:
1502 return _mesa_is_desktop_gl(ctx);
1503 case GL_PROXY_TEXTURE_CUBE_MAP:
1504 return _mesa_is_desktop_gl(ctx)
1505 && ctx->Extensions.ARB_texture_cube_map;
1506 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1507 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1508 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1509 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1510 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1511 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1512 return ctx->Extensions.ARB_texture_cube_map;
1513 case GL_TEXTURE_RECTANGLE_NV:
1514 case GL_PROXY_TEXTURE_RECTANGLE_NV:
1515 return _mesa_is_desktop_gl(ctx)
1516 && ctx->Extensions.NV_texture_rectangle;
1517 case GL_TEXTURE_1D_ARRAY_EXT:
1518 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1519 return _mesa_is_desktop_gl(ctx)
1520 && (ctx->Extensions.MESA_texture_array ||
1521 ctx->Extensions.EXT_texture_array);
1522 default:
1523 return GL_FALSE;
1524 }
1525 case 3:
1526 switch (target) {
1527 case GL_TEXTURE_3D:
1528 return GL_TRUE;
1529 case GL_PROXY_TEXTURE_3D:
1530 return _mesa_is_desktop_gl(ctx);
1531 case GL_TEXTURE_2D_ARRAY_EXT:
1532 return (_mesa_is_desktop_gl(ctx)
1533 && (ctx->Extensions.MESA_texture_array ||
1534 ctx->Extensions.EXT_texture_array))
1535 || _mesa_is_gles3(ctx);
1536 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1537 return _mesa_is_desktop_gl(ctx)
1538 && (ctx->Extensions.MESA_texture_array ||
1539 ctx->Extensions.EXT_texture_array);
1540 default:
1541 return GL_FALSE;
1542 }
1543 default:
1544 _mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims);
1545 return GL_FALSE;
1546 }
1547 }
1548
1549
1550 /**
1551 * Check if the given texture target value is legal for a
1552 * glTexSubImage, glCopyTexSubImage or glCopyTexImage call.
1553 * The difference compared to legal_teximage_target() above is that
1554 * proxy targets are not supported.
1555 */
1556 static GLboolean
legal_texsubimage_target(struct gl_context * ctx,GLuint dims,GLenum target)1557 legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target)
1558 {
1559 switch (dims) {
1560 case 1:
1561 return _mesa_is_desktop_gl(ctx) && target == GL_TEXTURE_1D;
1562 case 2:
1563 switch (target) {
1564 case GL_TEXTURE_2D:
1565 return GL_TRUE;
1566 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1567 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1568 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1569 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1570 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1571 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1572 return ctx->Extensions.ARB_texture_cube_map;
1573 case GL_TEXTURE_RECTANGLE_NV:
1574 return _mesa_is_desktop_gl(ctx)
1575 && ctx->Extensions.NV_texture_rectangle;
1576 case GL_TEXTURE_1D_ARRAY_EXT:
1577 return _mesa_is_desktop_gl(ctx)
1578 && (ctx->Extensions.MESA_texture_array ||
1579 ctx->Extensions.EXT_texture_array);
1580 default:
1581 return GL_FALSE;
1582 }
1583 case 3:
1584 switch (target) {
1585 case GL_TEXTURE_3D:
1586 return GL_TRUE;
1587 case GL_TEXTURE_2D_ARRAY_EXT:
1588 return (_mesa_is_desktop_gl(ctx)
1589 && (ctx->Extensions.MESA_texture_array ||
1590 ctx->Extensions.EXT_texture_array))
1591 || _mesa_is_gles3(ctx);
1592 default:
1593 return GL_FALSE;
1594 }
1595 default:
1596 _mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()",
1597 dims);
1598 return GL_FALSE;
1599 }
1600 }
1601
1602
1603 /**
1604 * Helper function to determine if a texture object is mutable (in terms
1605 * of GL_ARB_texture_storage).
1606 */
1607 static GLboolean
mutable_tex_object(struct gl_context * ctx,GLenum target)1608 mutable_tex_object(struct gl_context *ctx, GLenum target)
1609 {
1610 if (ctx->Extensions.ARB_texture_storage) {
1611 struct gl_texture_object *texObj =
1612 _mesa_get_current_tex_object(ctx, target);
1613 return !texObj->Immutable;
1614 }
1615 return GL_TRUE;
1616 }
1617
1618
1619 GLenum
_mesa_es_error_check_format_and_type(GLenum format,GLenum type,unsigned dimensions)1620 _mesa_es_error_check_format_and_type(GLenum format, GLenum type,
1621 unsigned dimensions)
1622 {
1623 bool type_valid = true;
1624
1625 switch (format) {
1626 case GL_ALPHA:
1627 case GL_LUMINANCE:
1628 case GL_LUMINANCE_ALPHA:
1629 type_valid = (type == GL_UNSIGNED_BYTE
1630 || type == GL_FLOAT
1631 || type == GL_HALF_FLOAT_OES);
1632 break;
1633
1634 case GL_RGB:
1635 type_valid = (type == GL_UNSIGNED_BYTE
1636 || type == GL_UNSIGNED_SHORT_5_6_5
1637 || type == GL_FLOAT
1638 || type == GL_HALF_FLOAT_OES);
1639 break;
1640
1641 case GL_RGBA:
1642 type_valid = (type == GL_UNSIGNED_BYTE
1643 || type == GL_UNSIGNED_SHORT_4_4_4_4
1644 || type == GL_UNSIGNED_SHORT_5_5_5_1
1645 || type == GL_FLOAT
1646 || type == GL_HALF_FLOAT_OES
1647 || type == GL_UNSIGNED_INT_2_10_10_10_REV);
1648 break;
1649
1650 case GL_DEPTH_COMPONENT:
1651 /* This format is filtered against invalid dimensionalities elsewhere.
1652 */
1653 type_valid = (type == GL_UNSIGNED_SHORT
1654 || type == GL_UNSIGNED_INT);
1655 break;
1656
1657 case GL_DEPTH_STENCIL:
1658 /* This format is filtered against invalid dimensionalities elsewhere.
1659 */
1660 type_valid = (type == GL_UNSIGNED_INT_24_8);
1661 break;
1662
1663 case GL_BGRA_EXT:
1664 type_valid = (type == GL_UNSIGNED_BYTE);
1665
1666 /* This feels like a bug in the EXT_texture_format_BGRA8888 spec, but
1667 * the format does not appear to be allowed for 3D textures in OpenGL
1668 * ES.
1669 */
1670 if (dimensions != 2)
1671 return GL_INVALID_VALUE;
1672
1673 break;
1674
1675 default:
1676 return GL_INVALID_VALUE;
1677 }
1678
1679 return type_valid ? GL_NO_ERROR : GL_INVALID_OPERATION;
1680 }
1681
1682
1683
1684 /**
1685 * Return expected size of a compressed texture.
1686 */
1687 static GLuint
compressed_tex_size(GLsizei width,GLsizei height,GLsizei depth,GLenum glformat)1688 compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,
1689 GLenum glformat)
1690 {
1691 gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
1692 return _mesa_format_image_size(mesaFormat, width, height, depth);
1693 }
1694
1695
1696 /*
1697 * Return compressed texture block size, in pixels.
1698 */
1699 static void
get_compressed_block_size(GLenum glformat,GLuint * bw,GLuint * bh)1700 get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh)
1701 {
1702 gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
1703 _mesa_get_format_block_size(mesaFormat, bw, bh);
1704 }
1705
1706
1707 /**
1708 * Special value returned by error some texture error checking functions when
1709 * an error is detected and the proxy texture image's width/height/depth/format
1710 * fields should be zeroed-out.
1711 */
1712 #define PROXY_ERROR 2
1713
1714
1715 /**
1716 * Test the glTexImage[123]D() parameters for errors.
1717 *
1718 * \param ctx GL context.
1719 * \param dimensions texture image dimensions (must be 1, 2 or 3).
1720 * \param target texture target given by the user.
1721 * \param level image level given by the user.
1722 * \param internalFormat internal format given by the user.
1723 * \param format pixel data format given by the user.
1724 * \param type pixel data type given by the user.
1725 * \param width image width given by the user.
1726 * \param height image height given by the user.
1727 * \param depth image depth given by the user.
1728 * \param border image border given by the user.
1729 *
1730 * \return PROXY_ERROR if there's an error that should zero-out the proxy image,
1731 * GL_TRUE if a regular GL error is found, or GL_FALSE if no error,
1732 *
1733 * Verifies each of the parameters against the constants specified in
1734 * __struct gl_contextRec::Const and the supported extensions, and according
1735 * to the OpenGL specification.
1736 */
1737 static GLenum
texture_error_check(struct gl_context * ctx,GLuint dimensions,GLenum target,GLint level,GLint internalFormat,GLenum format,GLenum type,GLint width,GLint height,GLint depth,GLint border)1738 texture_error_check( struct gl_context *ctx,
1739 GLuint dimensions, GLenum target,
1740 GLint level, GLint internalFormat,
1741 GLenum format, GLenum type,
1742 GLint width, GLint height,
1743 GLint depth, GLint border )
1744 {
1745 const GLenum proxyTarget = _mesa_get_proxy_target(target);
1746 const GLboolean isProxy = target == proxyTarget;
1747 GLboolean sizeOK = GL_TRUE;
1748 GLboolean colorFormat;
1749 GLenum err;
1750
1751 /* Even though there are no color-index textures, we still have to support
1752 * uploading color-index data and remapping it to RGB via the
1753 * GL_PIXEL_MAP_I_TO_[RGBA] tables.
1754 */
1755 const GLboolean indexFormat = (format == GL_COLOR_INDEX);
1756
1757 /* Note: for proxy textures, some error conditions immediately generate
1758 * a GL error in the usual way. But others do not generate a GL error.
1759 * Instead, they cause the width, height, depth, format fields of the
1760 * texture image to be zeroed-out. The GL spec seems to indicate that the
1761 * zero-out behaviour is only used in cases related to memory allocation.
1762 */
1763
1764 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
1765 if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
1766 _mesa_error(ctx, GL_INVALID_VALUE,
1767 "glTexImage%dD(level=%d)", dimensions, level);
1768 return GL_TRUE;
1769 }
1770
1771 /* Check border */
1772 if (border < 0 || border > 1 ||
1773 ((ctx->API != API_OPENGL ||
1774 target == GL_TEXTURE_RECTANGLE_NV ||
1775 target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
1776 _mesa_error(ctx, GL_INVALID_VALUE,
1777 "glTexImage%dD(border=%d)", dimensions, border);
1778 return GL_TRUE;
1779 }
1780
1781 if (width < 0 || height < 0 || depth < 0) {
1782 _mesa_error(ctx, GL_INVALID_VALUE,
1783 "glTexImage%dD(width, height or depth < 0)", dimensions);
1784 return GL_TRUE;
1785 }
1786
1787 /* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the
1788 * combinations of format, internalFormat, and type that can be used.
1789 * Formats and types that require additional extensions (e.g., GL_FLOAT
1790 * requires GL_OES_texture_float) are filtered elsewhere.
1791 */
1792 if (_mesa_is_gles(ctx) && !_mesa_is_gles3(ctx)) {
1793 if (format != internalFormat) {
1794 _mesa_error(ctx, GL_INVALID_OPERATION,
1795 "glTexImage%dD(format = %s, internalFormat = %s)",
1796 dimensions,
1797 _mesa_lookup_enum_by_nr(format),
1798 _mesa_lookup_enum_by_nr(internalFormat));
1799 return GL_TRUE;
1800 }
1801
1802 err = _mesa_es_error_check_format_and_type(format, type, dimensions);
1803 if (err != GL_NO_ERROR) {
1804 _mesa_error(ctx, err,
1805 "glTexImage%dD(format = %s, type = %s)",
1806 dimensions,
1807 _mesa_lookup_enum_by_nr(format),
1808 _mesa_lookup_enum_by_nr(type));
1809 return GL_TRUE;
1810 }
1811 }
1812
1813 /* Do this simple check before calling the TestProxyTexImage() function */
1814 if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
1815 sizeOK = (width == height);
1816 }
1817
1818 /*
1819 * Use the proxy texture driver hook to see if the size/level/etc are
1820 * legal.
1821 */
1822 sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
1823 internalFormat, format,
1824 type, width, height,
1825 depth, border);
1826 if (!sizeOK) {
1827 if (isProxy) {
1828 /* No GL error is recorded, but we need to zero-out the image dims */
1829 return PROXY_ERROR;
1830 }
1831 else {
1832 _mesa_error(ctx, GL_INVALID_VALUE,
1833 "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)",
1834 dimensions, level, width, height, depth);
1835 return GL_TRUE;
1836 }
1837 }
1838
1839 /* Check internalFormat */
1840 if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
1841 _mesa_error(ctx, GL_INVALID_VALUE,
1842 "glTexImage%dD(internalFormat=%s)",
1843 dimensions, _mesa_lookup_enum_by_nr(internalFormat));
1844 return GL_TRUE;
1845 }
1846
1847 /* Check incoming image format and type */
1848 err = _mesa_error_check_format_and_type(ctx, format, type);
1849 if (err != GL_NO_ERROR) {
1850 _mesa_error(ctx, err,
1851 "glTexImage%dD(incompatible format 0x%x, type 0x%x)",
1852 dimensions, format, type);
1853 return GL_TRUE;
1854 }
1855
1856 /* make sure internal format and format basically agree */
1857 colorFormat = _mesa_is_color_format(format);
1858 if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) ||
1859 (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) ||
1860 (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) ||
1861 (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) ||
1862 (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) {
1863 _mesa_error(ctx, GL_INVALID_OPERATION,
1864 "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)",
1865 dimensions, internalFormat, format);
1866 return GL_TRUE;
1867 }
1868
1869 /* additional checks for ycbcr textures */
1870 if (internalFormat == GL_YCBCR_MESA) {
1871 ASSERT(ctx->Extensions.MESA_ycbcr_texture);
1872 if (type != GL_UNSIGNED_SHORT_8_8_MESA &&
1873 type != GL_UNSIGNED_SHORT_8_8_REV_MESA) {
1874 char message[100];
1875 _mesa_snprintf(message, sizeof(message),
1876 "glTexImage%dD(format/type YCBCR mismatch)",
1877 dimensions);
1878 _mesa_error(ctx, GL_INVALID_ENUM, "%s", message);
1879 return GL_TRUE; /* error */
1880 }
1881 if (target != GL_TEXTURE_2D &&
1882 target != GL_PROXY_TEXTURE_2D &&
1883 target != GL_TEXTURE_RECTANGLE_NV &&
1884 target != GL_PROXY_TEXTURE_RECTANGLE_NV) {
1885 _mesa_error(ctx, GL_INVALID_ENUM,
1886 "glTexImage%dD(bad target for YCbCr texture)",
1887 dimensions);
1888 return GL_TRUE;
1889 }
1890 if (border != 0) {
1891 char message[100];
1892 _mesa_snprintf(message, sizeof(message),
1893 "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)",
1894 dimensions, border);
1895 _mesa_error(ctx, GL_INVALID_VALUE, "%s", message);
1896 return GL_TRUE;
1897 }
1898 }
1899
1900 /* additional checks for depth textures */
1901 if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) {
1902 /* Only 1D, 2D, rect, array and cube textures supported, not 3D
1903 * Cubemaps are only supported for GL version > 3.0 or with EXT_gpu_shader4 */
1904 if (target != GL_TEXTURE_1D &&
1905 target != GL_PROXY_TEXTURE_1D &&
1906 target != GL_TEXTURE_2D &&
1907 target != GL_PROXY_TEXTURE_2D &&
1908 target != GL_TEXTURE_1D_ARRAY &&
1909 target != GL_PROXY_TEXTURE_1D_ARRAY &&
1910 target != GL_TEXTURE_2D_ARRAY &&
1911 target != GL_PROXY_TEXTURE_2D_ARRAY &&
1912 target != GL_TEXTURE_RECTANGLE_ARB &&
1913 target != GL_PROXY_TEXTURE_RECTANGLE_ARB &&
1914 !((_mesa_is_cube_face(target) || target == GL_PROXY_TEXTURE_CUBE_MAP) &&
1915 (ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4))) {
1916 _mesa_error(ctx, GL_INVALID_ENUM,
1917 "glTexImage%dD(bad target for depth texture)",
1918 dimensions);
1919 return GL_TRUE;
1920 }
1921 }
1922
1923 /* additional checks for compressed textures */
1924 if (_mesa_is_compressed_format(ctx, internalFormat)) {
1925 if (!target_can_be_compressed(ctx, target, internalFormat)) {
1926 _mesa_error(ctx, GL_INVALID_ENUM,
1927 "glTexImage%dD(target can't be compressed)", dimensions);
1928 return GL_TRUE;
1929 }
1930 if (compressedteximage_only_format(ctx, internalFormat)) {
1931 _mesa_error(ctx, GL_INVALID_OPERATION,
1932 "glTexImage%dD(no compression for format)", dimensions);
1933 return GL_TRUE;
1934 }
1935 if (border != 0) {
1936 _mesa_error(ctx, GL_INVALID_OPERATION,
1937 "glTexImage%dD(border!=0)", dimensions);
1938 return GL_TRUE;
1939 }
1940 }
1941
1942 /* additional checks for integer textures */
1943 if ((ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) &&
1944 (_mesa_is_enum_format_integer(format) !=
1945 _mesa_is_enum_format_integer(internalFormat))) {
1946 _mesa_error(ctx, GL_INVALID_OPERATION,
1947 "glTexImage%dD(integer/non-integer format mismatch)",
1948 dimensions);
1949 return GL_TRUE;
1950 }
1951
1952 if (!mutable_tex_object(ctx, target)) {
1953 _mesa_error(ctx, GL_INVALID_OPERATION,
1954 "glTexImage%dD(immutable texture)", dimensions);
1955 return GL_TRUE;
1956 }
1957
1958 /* if we get here, the parameters are OK */
1959 return GL_FALSE;
1960 }
1961
1962
1963 /**
1964 * Error checking for glCompressedTexImage[123]D().
1965 * \param reason returns reason for error, if any
1966 * \return error code or GL_NO_ERROR or PROXY_ERROR.
1967 */
1968 static GLenum
compressed_texture_error_check(struct gl_context * ctx,GLint dimensions,GLenum target,GLint level,GLenum internalFormat,GLsizei width,GLsizei height,GLsizei depth,GLint border,GLsizei imageSize)1969 compressed_texture_error_check(struct gl_context *ctx, GLint dimensions,
1970 GLenum target, GLint level,
1971 GLenum internalFormat, GLsizei width,
1972 GLsizei height, GLsizei depth, GLint border,
1973 GLsizei imageSize)
1974 {
1975 const GLenum proxyTarget = _mesa_get_proxy_target(target);
1976 const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
1977 GLint expectedSize;
1978 GLenum choose_format;
1979 GLenum choose_type;
1980 GLenum proxy_format;
1981 GLenum error = GL_NO_ERROR;
1982 char *reason = ""; /* no error */
1983
1984 if (!target_can_be_compressed(ctx, target, internalFormat)) {
1985 reason = "target";
1986 error = GL_INVALID_ENUM;
1987 goto error;
1988 }
1989
1990 /* This will detect any invalid internalFormat value */
1991 if (!_mesa_is_compressed_format(ctx, internalFormat)) {
1992 reason = "internalFormat";
1993 error = GL_INVALID_ENUM;
1994 goto error;
1995 }
1996
1997 switch (internalFormat) {
1998 #if FEATURE_ES
1999 case GL_PALETTE4_RGB8_OES:
2000 case GL_PALETTE4_RGBA8_OES:
2001 case GL_PALETTE4_R5_G6_B5_OES:
2002 case GL_PALETTE4_RGBA4_OES:
2003 case GL_PALETTE4_RGB5_A1_OES:
2004 case GL_PALETTE8_RGB8_OES:
2005 case GL_PALETTE8_RGBA8_OES:
2006 case GL_PALETTE8_R5_G6_B5_OES:
2007 case GL_PALETTE8_RGBA4_OES:
2008 case GL_PALETTE8_RGB5_A1_OES:
2009 _mesa_cpal_compressed_format_type(internalFormat, &choose_format,
2010 &choose_type);
2011 proxy_format = choose_format;
2012
2013 /* check level (note that level should be zero or less!) */
2014 if (level > 0 || level < -maxLevels) {
2015 reason = "level";
2016 error = GL_INVALID_VALUE;
2017 goto error;
2018 }
2019
2020 if (dimensions != 2) {
2021 reason = "compressed paletted textures must be 2D";
2022 error = GL_INVALID_OPERATION;
2023 goto error;
2024 }
2025
2026 /* Figure out the expected texture size (in bytes). This will be
2027 * checked against the actual size later.
2028 */
2029 expectedSize = _mesa_cpal_compressed_size(level, internalFormat,
2030 width, height);
2031
2032 /* This is for the benefit of the TestProxyTexImage below. It expects
2033 * level to be non-negative. OES_compressed_paletted_texture uses a
2034 * weird mechanism where the level specified to glCompressedTexImage2D
2035 * is -(n-1) number of levels in the texture, and the data specifies the
2036 * complete mipmap stack. This is done to ensure the palette is the
2037 * same for all levels.
2038 */
2039 level = -level;
2040 break;
2041 #endif
2042
2043 default:
2044 choose_format = GL_NONE;
2045 choose_type = GL_NONE;
2046 proxy_format = internalFormat;
2047
2048 /* check level */
2049 if (level < 0 || level >= maxLevels) {
2050 reason = "level";
2051 error = GL_INVALID_VALUE;
2052 goto error;
2053 }
2054
2055 /* Figure out the expected texture size (in bytes). This will be
2056 * checked against the actual size later.
2057 */
2058 expectedSize = compressed_tex_size(width, height, depth, internalFormat);
2059 break;
2060 }
2061
2062 /* This should really never fail */
2063 if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
2064 reason = "internalFormat";
2065 error = GL_INVALID_ENUM;
2066 goto error;
2067 }
2068
2069 /* No compressed formats support borders at this time */
2070 if (border != 0) {
2071 reason = "border != 0";
2072 error = GL_INVALID_VALUE;
2073 goto error;
2074 }
2075
2076 /* For cube map, width must equal height */
2077 if (_mesa_is_cube_face(target) && width != height) {
2078 reason = "width != height";
2079 error = GL_INVALID_VALUE;
2080 goto error;
2081 }
2082
2083 /* check image sizes */
2084 if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
2085 proxy_format, choose_format,
2086 choose_type,
2087 width, height, depth, border)) {
2088 /* See error comment above */
2089 if (target == proxyTarget) {
2090 return PROXY_ERROR;
2091 }
2092 reason = "invalid width, height or format";
2093 error = GL_INVALID_OPERATION;
2094 goto error;
2095 }
2096
2097 /* check image size in bytes */
2098 if (expectedSize != imageSize) {
2099 /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...]
2100 * if <imageSize> is not consistent with the format, dimensions, and
2101 * contents of the specified image.
2102 */
2103 reason = "imageSize inconsistant with width/height/format";
2104 error = GL_INVALID_VALUE;
2105 goto error;
2106 }
2107
2108 if (!mutable_tex_object(ctx, target)) {
2109 reason = "immutable texture";
2110 error = GL_INVALID_OPERATION;
2111 goto error;
2112 }
2113
2114 return GL_NO_ERROR;
2115
2116 error:
2117 _mesa_error(ctx, error, "glCompressedTexImage%dD(%s)", dimensions, reason);
2118 return error;
2119 }
2120
2121
2122
2123 /**
2124 * Test glTexSubImage[123]D() parameters for errors.
2125 *
2126 * \param ctx GL context.
2127 * \param dimensions texture image dimensions (must be 1, 2 or 3).
2128 * \param target texture target given by the user.
2129 * \param level image level given by the user.
2130 * \param xoffset sub-image x offset given by the user.
2131 * \param yoffset sub-image y offset given by the user.
2132 * \param zoffset sub-image z offset given by the user.
2133 * \param format pixel data format given by the user.
2134 * \param type pixel data type given by the user.
2135 * \param width image width given by the user.
2136 * \param height image height given by the user.
2137 * \param depth image depth given by the user.
2138 *
2139 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
2140 *
2141 * Verifies each of the parameters against the constants specified in
2142 * __struct gl_contextRec::Const and the supported extensions, and according
2143 * to the OpenGL specification.
2144 */
2145 static GLboolean
subtexture_error_check(struct gl_context * ctx,GLuint dimensions,GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLint width,GLint height,GLint depth,GLenum format,GLenum type)2146 subtexture_error_check( struct gl_context *ctx, GLuint dimensions,
2147 GLenum target, GLint level,
2148 GLint xoffset, GLint yoffset, GLint zoffset,
2149 GLint width, GLint height, GLint depth,
2150 GLenum format, GLenum type )
2151 {
2152 GLenum err;
2153
2154 /* Basic level check */
2155 if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
2156 _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level);
2157 return GL_TRUE;
2158 }
2159
2160 /* Check for negative sizes */
2161 if (width < 0) {
2162 _mesa_error(ctx, GL_INVALID_VALUE,
2163 "glTexSubImage%dD(width=%d)", dimensions, width);
2164 return GL_TRUE;
2165 }
2166 if (height < 0 && dimensions > 1) {
2167 _mesa_error(ctx, GL_INVALID_VALUE,
2168 "glTexSubImage%dD(height=%d)", dimensions, height);
2169 return GL_TRUE;
2170 }
2171 if (depth < 0 && dimensions > 2) {
2172 _mesa_error(ctx, GL_INVALID_VALUE,
2173 "glTexSubImage%dD(depth=%d)", dimensions, depth);
2174 return GL_TRUE;
2175 }
2176
2177 /* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the
2178 * combinations of format and type that can be used. Formats and types
2179 * that require additional extensions (e.g., GL_FLOAT requires
2180 * GL_OES_texture_float) are filtered elsewhere.
2181 */
2182 if (_mesa_is_gles(ctx) && !_mesa_is_gles3(ctx)) {
2183 err = _mesa_es_error_check_format_and_type(format, type, dimensions);
2184 if (err != GL_NO_ERROR) {
2185 _mesa_error(ctx, err,
2186 "glTexSubImage%dD(format = %s, type = %s)",
2187 dimensions,
2188 _mesa_lookup_enum_by_nr(format),
2189 _mesa_lookup_enum_by_nr(type));
2190 return GL_TRUE;
2191 }
2192 }
2193
2194 err = _mesa_error_check_format_and_type(ctx, format, type);
2195 if (err != GL_NO_ERROR) {
2196 _mesa_error(ctx, err,
2197 "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",
2198 dimensions, format, type);
2199 return GL_TRUE;
2200 }
2201
2202 return GL_FALSE;
2203 }
2204
2205
2206 /**
2207 * Do second part of glTexSubImage which depends on the destination texture.
2208 * \return GL_TRUE if error recorded, GL_FALSE otherwise
2209 */
2210 static GLboolean
subtexture_error_check2(struct gl_context * ctx,GLuint dimensions,GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLint width,GLint height,GLint depth,GLenum format,GLenum type,const struct gl_texture_image * destTex)2211 subtexture_error_check2( struct gl_context *ctx, GLuint dimensions,
2212 GLenum target, GLint level,
2213 GLint xoffset, GLint yoffset, GLint zoffset,
2214 GLint width, GLint height, GLint depth,
2215 GLenum format, GLenum type,
2216 const struct gl_texture_image *destTex )
2217 {
2218 if (!destTex) {
2219 /* undefined image level */
2220 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions);
2221 return GL_TRUE;
2222 }
2223
2224 if (xoffset < -((GLint)destTex->Border)) {
2225 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)",
2226 dimensions);
2227 return GL_TRUE;
2228 }
2229 if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) {
2230 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)",
2231 dimensions);
2232 return GL_TRUE;
2233 }
2234 if (dimensions > 1) {
2235 GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : destTex->Border;
2236 if (yoffset < -yBorder) {
2237 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)",
2238 dimensions);
2239 return GL_TRUE;
2240 }
2241 if (yoffset + height > (GLint) destTex->Height + yBorder) {
2242 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)",
2243 dimensions);
2244 return GL_TRUE;
2245 }
2246 }
2247 if (dimensions > 2) {
2248 GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : destTex->Border;
2249 if (zoffset < -zBorder) {
2250 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)");
2251 return GL_TRUE;
2252 }
2253 if (zoffset + depth > (GLint) destTex->Depth + zBorder) {
2254 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)");
2255 return GL_TRUE;
2256 }
2257 }
2258
2259 if (_mesa_is_format_compressed(destTex->TexFormat)) {
2260 GLuint bw, bh;
2261
2262 if (compressedteximage_only_format(ctx, destTex->InternalFormat)) {
2263 _mesa_error(ctx, GL_INVALID_OPERATION,
2264 "glTexSubImage%dD(no compression for format)", dimensions);
2265 return GL_TRUE;
2266 }
2267
2268 /* do tests which depend on compression block size */
2269 _mesa_get_format_block_size(destTex->TexFormat, &bw, &bh);
2270
2271 /* offset must be multiple of block size */
2272 if ((xoffset % bw != 0) || (yoffset % bh != 0)) {
2273 _mesa_error(ctx, GL_INVALID_OPERATION,
2274 "glTexSubImage%dD(xoffset = %d, yoffset = %d)",
2275 dimensions, xoffset, yoffset);
2276 return GL_TRUE;
2277 }
2278 /* size must be multiple of bw by bh or equal to whole texture size */
2279 if ((width % bw != 0) && (GLuint) width != destTex->Width) {
2280 _mesa_error(ctx, GL_INVALID_OPERATION,
2281 "glTexSubImage%dD(width = %d)", dimensions, width);
2282 return GL_TRUE;
2283 }
2284 if ((height % bh != 0) && (GLuint) height != destTex->Height) {
2285 _mesa_error(ctx, GL_INVALID_OPERATION,
2286 "glTexSubImage%dD(height = %d)", dimensions, height);
2287 return GL_TRUE;
2288 }
2289 }
2290
2291 if (ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) {
2292 /* both source and dest must be integer-valued, or neither */
2293 if (_mesa_is_format_integer_color(destTex->TexFormat) !=
2294 _mesa_is_enum_format_integer(format)) {
2295 _mesa_error(ctx, GL_INVALID_OPERATION,
2296 "glTexSubImage%dD(integer/non-integer format mismatch)",
2297 dimensions);
2298 return GL_TRUE;
2299 }
2300 }
2301
2302 return GL_FALSE;
2303 }
2304
2305
2306 /**
2307 * Test glCopyTexImage[12]D() parameters for errors.
2308 *
2309 * \param ctx GL context.
2310 * \param dimensions texture image dimensions (must be 1, 2 or 3).
2311 * \param target texture target given by the user.
2312 * \param level image level given by the user.
2313 * \param internalFormat internal format given by the user.
2314 * \param width image width given by the user.
2315 * \param height image height given by the user.
2316 * \param border texture border.
2317 *
2318 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
2319 *
2320 * Verifies each of the parameters against the constants specified in
2321 * __struct gl_contextRec::Const and the supported extensions, and according
2322 * to the OpenGL specification.
2323 */
2324 static GLboolean
copytexture_error_check(struct gl_context * ctx,GLuint dimensions,GLenum target,GLint level,GLint internalFormat,GLint width,GLint height,GLint border)2325 copytexture_error_check( struct gl_context *ctx, GLuint dimensions,
2326 GLenum target, GLint level, GLint internalFormat,
2327 GLint width, GLint height, GLint border )
2328 {
2329 const GLenum proxyTarget = _mesa_get_proxy_target(target);
2330 const GLenum type = GL_FLOAT;
2331 GLboolean sizeOK;
2332 GLint baseFormat;
2333
2334 /* check target */
2335 if (!legal_texsubimage_target(ctx, dimensions, target)) {
2336 _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)",
2337 dimensions, _mesa_lookup_enum_by_nr(target));
2338 return GL_TRUE;
2339 }
2340
2341 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
2342 if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
2343 _mesa_error(ctx, GL_INVALID_VALUE,
2344 "glCopyTexImage%dD(level=%d)", dimensions, level);
2345 return GL_TRUE;
2346 }
2347
2348 /* Check that the source buffer is complete */
2349 if (_mesa_is_user_fbo(ctx->ReadBuffer)) {
2350 if (ctx->ReadBuffer->_Status == 0) {
2351 _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
2352 }
2353 if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2354 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2355 "glCopyTexImage%dD(invalid readbuffer)", dimensions);
2356 return GL_TRUE;
2357 }
2358
2359 if (ctx->ReadBuffer->Visual.samples > 0) {
2360 _mesa_error(ctx, GL_INVALID_OPERATION,
2361 "glCopyTexImage%dD(multisample FBO)",
2362 dimensions);
2363 return GL_TRUE;
2364 }
2365 }
2366
2367 /* Check border */
2368 if (border < 0 || border > 1 ||
2369 ((ctx->API != API_OPENGL ||
2370 target == GL_TEXTURE_RECTANGLE_NV ||
2371 target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
2372 _mesa_error(ctx, GL_INVALID_VALUE,
2373 "glCopyTexImage%dD(border=%d)", dimensions, border);
2374 return GL_TRUE;
2375 }
2376
2377 /* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the
2378 * internalFormat.
2379 */
2380 if (_mesa_is_gles(ctx) && !_mesa_is_gles3(ctx)) {
2381 switch (internalFormat) {
2382 case GL_ALPHA:
2383 case GL_RGB:
2384 case GL_RGBA:
2385 case GL_LUMINANCE:
2386 case GL_LUMINANCE_ALPHA:
2387 break;
2388 default:
2389 _mesa_error(ctx, GL_INVALID_VALUE,
2390 "glCopyTexImage%dD(internalFormat)", dimensions);
2391 return GL_TRUE;
2392 }
2393 }
2394
2395 baseFormat = _mesa_base_tex_format(ctx, internalFormat);
2396 if (baseFormat < 0) {
2397 _mesa_error(ctx, GL_INVALID_VALUE,
2398 "glCopyTexImage%dD(internalFormat)", dimensions);
2399 return GL_TRUE;
2400 }
2401
2402 if (!_mesa_source_buffer_exists(ctx, baseFormat)) {
2403 _mesa_error(ctx, GL_INVALID_OPERATION,
2404 "glCopyTexImage%dD(missing readbuffer)", dimensions);
2405 return GL_TRUE;
2406 }
2407
2408 /* From the EXT_texture_integer spec:
2409 *
2410 * "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage*
2411 * if the texture internalformat is an integer format and the read color
2412 * buffer is not an integer format, or if the internalformat is not an
2413 * integer format and the read color buffer is an integer format."
2414 */
2415 if (_mesa_is_color_format(internalFormat)) {
2416 struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
2417
2418 if (_mesa_is_enum_format_integer(rb->InternalFormat) !=
2419 _mesa_is_enum_format_integer(internalFormat)) {
2420 _mesa_error(ctx, GL_INVALID_OPERATION,
2421 "glCopyTexImage%dD(integer vs non-integer)", dimensions);
2422 return GL_TRUE;
2423 }
2424 }
2425
2426 /* Do size, level checking */
2427 sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB)
2428 ? (width == height) : 1;
2429
2430 sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
2431 internalFormat, baseFormat,
2432 type, width, height,
2433 1, border);
2434
2435 if (!sizeOK) {
2436 if (dimensions == 1) {
2437 _mesa_error(ctx, GL_INVALID_VALUE,
2438 "glCopyTexImage1D(width=%d)", width);
2439 }
2440 else {
2441 ASSERT(dimensions == 2);
2442 _mesa_error(ctx, GL_INVALID_VALUE,
2443 "glCopyTexImage2D(width=%d, height=%d)", width, height);
2444 }
2445 return GL_TRUE;
2446 }
2447
2448 if (_mesa_is_compressed_format(ctx, internalFormat)) {
2449 if (!target_can_be_compressed(ctx, target, internalFormat)) {
2450 _mesa_error(ctx, GL_INVALID_ENUM,
2451 "glCopyTexImage%dD(target)", dimensions);
2452 return GL_TRUE;
2453 }
2454 if (compressedteximage_only_format(ctx, internalFormat)) {
2455 _mesa_error(ctx, GL_INVALID_OPERATION,
2456 "glCopyTexImage%dD(no compression for format)", dimensions);
2457 return GL_TRUE;
2458 }
2459 if (border != 0) {
2460 _mesa_error(ctx, GL_INVALID_OPERATION,
2461 "glCopyTexImage%dD(border!=0)", dimensions);
2462 return GL_TRUE;
2463 }
2464 }
2465
2466 if (!mutable_tex_object(ctx, target)) {
2467 _mesa_error(ctx, GL_INVALID_OPERATION,
2468 "glCopyTexImage%dD(immutable texture)", dimensions);
2469 return GL_TRUE;
2470 }
2471
2472 /* if we get here, the parameters are OK */
2473 return GL_FALSE;
2474 }
2475
2476
2477 /**
2478 * Test glCopyTexSubImage[12]D() parameters for errors.
2479 * Note that this is the first part of error checking.
2480 * See also copytexsubimage_error_check2() below for the second part.
2481 *
2482 * \param ctx GL context.
2483 * \param dimensions texture image dimensions (must be 1, 2 or 3).
2484 * \param target texture target given by the user.
2485 * \param level image level given by the user.
2486 *
2487 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
2488 */
2489 static GLboolean
copytexsubimage_error_check1(struct gl_context * ctx,GLuint dimensions,GLenum target,GLint level)2490 copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions,
2491 GLenum target, GLint level)
2492 {
2493 /* Check that the source buffer is complete */
2494 if (_mesa_is_user_fbo(ctx->ReadBuffer)) {
2495 if (ctx->ReadBuffer->_Status == 0) {
2496 _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
2497 }
2498 if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2499 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2500 "glCopyTexImage%dD(invalid readbuffer)", dimensions);
2501 return GL_TRUE;
2502 }
2503
2504 if (ctx->ReadBuffer->Visual.samples > 0) {
2505 _mesa_error(ctx, GL_INVALID_OPERATION,
2506 "glCopyTexSubImage%dD(multisample FBO)",
2507 dimensions);
2508 return GL_TRUE;
2509 }
2510 }
2511
2512 /* check target (proxies not allowed) */
2513 if (!legal_texsubimage_target(ctx, dimensions, target)) {
2514 _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)",
2515 dimensions, _mesa_lookup_enum_by_nr(target));
2516 return GL_TRUE;
2517 }
2518
2519 /* Check level */
2520 if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
2521 _mesa_error(ctx, GL_INVALID_VALUE,
2522 "glCopyTexSubImage%dD(level=%d)", dimensions, level);
2523 return GL_TRUE;
2524 }
2525
2526 return GL_FALSE;
2527 }
2528
2529
2530 /**
2531 * Second part of error checking for glCopyTexSubImage[12]D().
2532 * \param xoffset sub-image x offset given by the user.
2533 * \param yoffset sub-image y offset given by the user.
2534 * \param zoffset sub-image z offset given by the user.
2535 * \param width image width given by the user.
2536 * \param height image height given by the user.
2537 */
2538 static GLboolean
copytexsubimage_error_check2(struct gl_context * ctx,GLuint dimensions,GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLsizei width,GLsizei height,const struct gl_texture_image * teximage)2539 copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions,
2540 GLenum target, GLint level,
2541 GLint xoffset, GLint yoffset, GLint zoffset,
2542 GLsizei width, GLsizei height,
2543 const struct gl_texture_image *teximage )
2544 {
2545 /* check that dest tex image exists */
2546 if (!teximage) {
2547 _mesa_error(ctx, GL_INVALID_OPERATION,
2548 "glCopyTexSubImage%dD(undefined texture level: %d)",
2549 dimensions, level);
2550 return GL_TRUE;
2551 }
2552
2553 /* Check size */
2554 if (width < 0) {
2555 _mesa_error(ctx, GL_INVALID_VALUE,
2556 "glCopyTexSubImage%dD(width=%d)", dimensions, width);
2557 return GL_TRUE;
2558 }
2559 if (dimensions > 1 && height < 0) {
2560 _mesa_error(ctx, GL_INVALID_VALUE,
2561 "glCopyTexSubImage%dD(height=%d)", dimensions, height);
2562 return GL_TRUE;
2563 }
2564
2565 /* check x/y offsets */
2566 if (xoffset < -((GLint)teximage->Border)) {
2567 _mesa_error(ctx, GL_INVALID_VALUE,
2568 "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset);
2569 return GL_TRUE;
2570 }
2571 if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) {
2572 _mesa_error(ctx, GL_INVALID_VALUE,
2573 "glCopyTexSubImage%dD(xoffset+width)", dimensions);
2574 return GL_TRUE;
2575 }
2576 if (dimensions > 1) {
2577 GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : teximage->Border;
2578 if (yoffset < -yBorder) {
2579 _mesa_error(ctx, GL_INVALID_VALUE,
2580 "glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset);
2581 return GL_TRUE;
2582 }
2583 /* NOTE: we're adding the border here, not subtracting! */
2584 if (yoffset + height > (GLint) teximage->Height + yBorder) {
2585 _mesa_error(ctx, GL_INVALID_VALUE,
2586 "glCopyTexSubImage%dD(yoffset+height)", dimensions);
2587 return GL_TRUE;
2588 }
2589 }
2590
2591 /* check z offset */
2592 if (dimensions > 2) {
2593 GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : teximage->Border;
2594 if (zoffset < -zBorder) {
2595 _mesa_error(ctx, GL_INVALID_VALUE,
2596 "glCopyTexSubImage%dD(zoffset)", dimensions);
2597 return GL_TRUE;
2598 }
2599 if (zoffset > (GLint) teximage->Depth + zBorder) {
2600 _mesa_error(ctx, GL_INVALID_VALUE,
2601 "glCopyTexSubImage%dD(zoffset+depth)", dimensions);
2602 return GL_TRUE;
2603 }
2604 }
2605
2606 if (_mesa_is_format_compressed(teximage->TexFormat)) {
2607 if (compressedteximage_only_format(ctx, teximage->InternalFormat)) {
2608 _mesa_error(ctx, GL_INVALID_OPERATION,
2609 "glCopyTexSubImage%dD(no compression for format)", dimensions);
2610 return GL_TRUE;
2611 }
2612 /* offset must be multiple of 4 */
2613 if ((xoffset & 3) || (yoffset & 3)) {
2614 _mesa_error(ctx, GL_INVALID_VALUE,
2615 "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions);
2616 return GL_TRUE;
2617 }
2618 /* size must be multiple of 4 */
2619 if ((width & 3) != 0 && (GLuint) width != teximage->Width) {
2620 _mesa_error(ctx, GL_INVALID_VALUE,
2621 "glCopyTexSubImage%dD(width)", dimensions);
2622 return GL_TRUE;
2623 }
2624 if ((height & 3) != 0 && (GLuint) height != teximage->Height) {
2625 _mesa_error(ctx, GL_INVALID_VALUE,
2626 "glCopyTexSubImage%dD(height)", dimensions);
2627 return GL_TRUE;
2628 }
2629 }
2630
2631 if (teximage->InternalFormat == GL_YCBCR_MESA) {
2632 _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D");
2633 return GL_TRUE;
2634 }
2635
2636 if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {
2637 _mesa_error(ctx, GL_INVALID_OPERATION,
2638 "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)",
2639 dimensions, teximage->_BaseFormat);
2640 return GL_TRUE;
2641 }
2642
2643 /* From the EXT_texture_integer spec:
2644 *
2645 * "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage*
2646 * if the texture internalformat is an integer format and the read color
2647 * buffer is not an integer format, or if the internalformat is not an
2648 * integer format and the read color buffer is an integer format."
2649 */
2650 if (_mesa_is_color_format(teximage->InternalFormat)) {
2651 struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
2652
2653 if (_mesa_is_format_integer_color(rb->Format) !=
2654 _mesa_is_format_integer_color(teximage->TexFormat)) {
2655 _mesa_error(ctx, GL_INVALID_OPERATION,
2656 "glCopyTexImage%dD(integer vs non-integer)", dimensions);
2657 return GL_TRUE;
2658 }
2659 }
2660
2661 /* if we get here, the parameters are OK */
2662 return GL_FALSE;
2663 }
2664
2665
2666 /** Callback info for walking over FBO hash table */
2667 struct cb_info
2668 {
2669 struct gl_context *ctx;
2670 struct gl_texture_object *texObj;
2671 GLuint level, face;
2672 };
2673
2674
2675 /**
2676 * Check render to texture callback. Called from _mesa_HashWalk().
2677 */
2678 static void
check_rtt_cb(GLuint key,void * data,void * userData)2679 check_rtt_cb(GLuint key, void *data, void *userData)
2680 {
2681 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
2682 const struct cb_info *info = (struct cb_info *) userData;
2683 struct gl_context *ctx = info->ctx;
2684 const struct gl_texture_object *texObj = info->texObj;
2685 const GLuint level = info->level, face = info->face;
2686
2687 /* If this is a user-created FBO */
2688 if (_mesa_is_user_fbo(fb)) {
2689 GLuint i;
2690 /* check if any of the FBO's attachments point to 'texObj' */
2691 for (i = 0; i < BUFFER_COUNT; i++) {
2692 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
2693 if (att->Type == GL_TEXTURE &&
2694 att->Texture == texObj &&
2695 att->TextureLevel == level &&
2696 att->CubeMapFace == face) {
2697 ASSERT(_mesa_get_attachment_teximage(att));
2698 /* Tell driver about the new renderbuffer texture */
2699 ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att);
2700 /* Mark fb status as indeterminate to force re-validation */
2701 fb->_Status = 0;
2702 }
2703 }
2704 }
2705 }
2706
2707
2708 /**
2709 * When a texture image is specified we have to check if it's bound to
2710 * any framebuffer objects (render to texture) in order to detect changes
2711 * in size or format since that effects FBO completeness.
2712 * Any FBOs rendering into the texture must be re-validated.
2713 */
2714 void
_mesa_update_fbo_texture(struct gl_context * ctx,struct gl_texture_object * texObj,GLuint face,GLuint level)2715 _mesa_update_fbo_texture(struct gl_context *ctx,
2716 struct gl_texture_object *texObj,
2717 GLuint face, GLuint level)
2718 {
2719 /* Only check this texture if it's been marked as RenderToTexture */
2720 if (texObj->_RenderToTexture) {
2721 struct cb_info info;
2722 info.ctx = ctx;
2723 info.texObj = texObj;
2724 info.level = level;
2725 info.face = face;
2726 _mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info);
2727 }
2728 }
2729
2730
2731 /**
2732 * If the texture object's GenerateMipmap flag is set and we've
2733 * changed the texture base level image, regenerate the rest of the
2734 * mipmap levels now.
2735 */
2736 static inline void
check_gen_mipmap(struct gl_context * ctx,GLenum target,struct gl_texture_object * texObj,GLint level)2737 check_gen_mipmap(struct gl_context *ctx, GLenum target,
2738 struct gl_texture_object *texObj, GLint level)
2739 {
2740 ASSERT(target != GL_TEXTURE_CUBE_MAP);
2741 if (texObj->GenerateMipmap &&
2742 level == texObj->BaseLevel &&
2743 level < texObj->MaxLevel) {
2744 ASSERT(ctx->Driver.GenerateMipmap);
2745 ctx->Driver.GenerateMipmap(ctx, target, texObj);
2746 }
2747 }
2748
2749
2750 /** Debug helper: override the user-requested internal format */
2751 static GLenum
override_internal_format(GLenum internalFormat,GLint width,GLint height)2752 override_internal_format(GLenum internalFormat, GLint width, GLint height)
2753 {
2754 #if 0
2755 if (internalFormat == GL_RGBA16F_ARB ||
2756 internalFormat == GL_RGBA32F_ARB) {
2757 printf("Convert rgba float tex to int %d x %d\n", width, height);
2758 return GL_RGBA;
2759 }
2760 else if (internalFormat == GL_RGB16F_ARB ||
2761 internalFormat == GL_RGB32F_ARB) {
2762 printf("Convert rgb float tex to int %d x %d\n", width, height);
2763 return GL_RGB;
2764 }
2765 else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB ||
2766 internalFormat == GL_LUMINANCE_ALPHA32F_ARB) {
2767 printf("Convert luminance float tex to int %d x %d\n", width, height);
2768 return GL_LUMINANCE_ALPHA;
2769 }
2770 else if (internalFormat == GL_LUMINANCE16F_ARB ||
2771 internalFormat == GL_LUMINANCE32F_ARB) {
2772 printf("Convert luminance float tex to int %d x %d\n", width, height);
2773 return GL_LUMINANCE;
2774 }
2775 else if (internalFormat == GL_ALPHA16F_ARB ||
2776 internalFormat == GL_ALPHA32F_ARB) {
2777 printf("Convert luminance float tex to int %d x %d\n", width, height);
2778 return GL_ALPHA;
2779 }
2780 /*
2781 else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) {
2782 internalFormat = GL_RGBA;
2783 }
2784 */
2785 else {
2786 return internalFormat;
2787 }
2788 #else
2789 return internalFormat;
2790 #endif
2791 }
2792
2793
2794 /**
2795 * Choose the actual hardware format for a texture image.
2796 * Try to use the same format as the previous image level when possible.
2797 * Otherwise, ask the driver for the best format.
2798 * It's important to try to choose a consistant format for all levels
2799 * for efficient texture memory layout/allocation. In particular, this
2800 * comes up during automatic mipmap generation.
2801 */
2802 gl_format
_mesa_choose_texture_format(struct gl_context * ctx,struct gl_texture_object * texObj,GLenum target,GLint level,GLenum internalFormat,GLenum format,GLenum type)2803 _mesa_choose_texture_format(struct gl_context *ctx,
2804 struct gl_texture_object *texObj,
2805 GLenum target, GLint level,
2806 GLenum internalFormat, GLenum format, GLenum type)
2807 {
2808 gl_format f;
2809
2810 /* see if we've already chosen a format for the previous level */
2811 if (level > 0) {
2812 struct gl_texture_image *prevImage =
2813 _mesa_select_tex_image(ctx, texObj, target, level - 1);
2814 /* See if the prev level is defined and has an internal format which
2815 * matches the new internal format.
2816 */
2817 if (prevImage &&
2818 prevImage->Width > 0 &&
2819 prevImage->InternalFormat == internalFormat) {
2820 /* use the same format */
2821 ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE);
2822 return prevImage->TexFormat;
2823 }
2824 }
2825
2826 /* If the application requested compression to an S3TC format but we don't
2827 * have the DTXn library, force a generic compressed format instead.
2828 */
2829 if (internalFormat != format && format != GL_NONE) {
2830 const GLenum before = internalFormat;
2831
2832 switch (internalFormat) {
2833 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
2834 if (!ctx->Mesa_DXTn)
2835 internalFormat = GL_COMPRESSED_RGB;
2836 break;
2837 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
2838 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
2839 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
2840 if (!ctx->Mesa_DXTn)
2841 internalFormat = GL_COMPRESSED_RGBA;
2842 break;
2843 default:
2844 break;
2845 }
2846
2847 if (before != internalFormat) {
2848 _mesa_warning(ctx,
2849 "DXT compression requested (%s), "
2850 "but libtxc_dxtn library not installed. Using %s "
2851 "instead.",
2852 _mesa_lookup_enum_by_nr(before),
2853 _mesa_lookup_enum_by_nr(internalFormat));
2854 }
2855 }
2856
2857 /* choose format from scratch */
2858 f = ctx->Driver.ChooseTextureFormat(ctx, texObj->Target, internalFormat,
2859 format, type);
2860 ASSERT(f != MESA_FORMAT_NONE);
2861 return f;
2862 }
2863
2864 /**
2865 * Adjust pixel unpack params and image dimensions to strip off the
2866 * one-pixel texture border.
2867 *
2868 * Gallium and intel don't support texture borders. They've seldem been used
2869 * and seldom been implemented correctly anyway.
2870 *
2871 * \param unpackNew returns the new pixel unpack parameters
2872 */
2873 static void
strip_texture_border(GLenum target,GLint * width,GLint * height,GLint * depth,const struct gl_pixelstore_attrib * unpack,struct gl_pixelstore_attrib * unpackNew)2874 strip_texture_border(GLenum target,
2875 GLint *width, GLint *height, GLint *depth,
2876 const struct gl_pixelstore_attrib *unpack,
2877 struct gl_pixelstore_attrib *unpackNew)
2878 {
2879 assert(width);
2880 assert(height);
2881 assert(depth);
2882
2883 *unpackNew = *unpack;
2884
2885 if (unpackNew->RowLength == 0)
2886 unpackNew->RowLength = *width;
2887
2888 if (unpackNew->ImageHeight == 0)
2889 unpackNew->ImageHeight = *height;
2890
2891 assert(*width >= 3);
2892 unpackNew->SkipPixels++; /* skip the border */
2893 *width = *width - 2; /* reduce the width by two border pixels */
2894
2895 /* The min height of a texture with a border is 3 */
2896 if (*height >= 3 && target != GL_TEXTURE_1D_ARRAY) {
2897 unpackNew->SkipRows++; /* skip the border */
2898 *height = *height - 2; /* reduce the height by two border pixels */
2899 }
2900
2901 if (*depth >= 3 && target != GL_TEXTURE_2D_ARRAY) {
2902 unpackNew->SkipImages++; /* skip the border */
2903 *depth = *depth - 2; /* reduce the depth by two border pixels */
2904 }
2905 }
2906
2907
2908 /**
2909 * Common code to implement all the glTexImage1D/2D/3D functions
2910 * as well as glCompressedTexImage1D/2D/3D.
2911 * \param compressed only GL_TRUE for glCompressedTexImage1D/2D/3D calls.
2912 * \param format the user's image format (only used if !compressed)
2913 * \param type the user's image type (only used if !compressed)
2914 * \param imageSize only used for glCompressedTexImage1D/2D/3D calls.
2915 */
2916 static void
teximage(struct gl_context * ctx,GLboolean compressed,GLuint dims,GLenum target,GLint level,GLint internalFormat,GLsizei width,GLsizei height,GLsizei depth,GLint border,GLenum format,GLenum type,GLsizei imageSize,const GLvoid * pixels)2917 teximage(struct gl_context *ctx, GLboolean compressed, GLuint dims,
2918 GLenum target, GLint level, GLint internalFormat,
2919 GLsizei width, GLsizei height, GLsizei depth,
2920 GLint border, GLenum format, GLenum type,
2921 GLsizei imageSize, const GLvoid *pixels)
2922 {
2923 const char *func = compressed ? "glCompressedTexImage" : "glTexImage";
2924 GLenum error;
2925 struct gl_pixelstore_attrib unpack_no_border;
2926 const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
2927
2928 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
2929
2930 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) {
2931 if (compressed)
2932 _mesa_debug(ctx,
2933 "glCompressedTexImage%uD %s %d %s %d %d %d %d %p\n",
2934 dims,
2935 _mesa_lookup_enum_by_nr(target), level,
2936 _mesa_lookup_enum_by_nr(internalFormat),
2937 width, height, depth, border, pixels);
2938 else
2939 _mesa_debug(ctx,
2940 "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n",
2941 dims,
2942 _mesa_lookup_enum_by_nr(target), level,
2943 _mesa_lookup_enum_by_nr(internalFormat),
2944 width, height, depth, border,
2945 _mesa_lookup_enum_by_nr(format),
2946 _mesa_lookup_enum_by_nr(type), pixels);
2947 }
2948
2949 internalFormat = override_internal_format(internalFormat, width, height);
2950
2951 /* target error checking */
2952 if (!legal_teximage_target(ctx, dims, target)) {
2953 _mesa_error(ctx, GL_INVALID_ENUM, "%s%uD(target=%s)",
2954 func, dims, _mesa_lookup_enum_by_nr(target));
2955 return;
2956 }
2957
2958 /* general error checking */
2959 if (compressed) {
2960 error = compressed_texture_error_check(ctx, dims, target, level,
2961 internalFormat,
2962 width, height, depth,
2963 border, imageSize);
2964 }
2965 else {
2966 error = texture_error_check(ctx, dims, target, level, internalFormat,
2967 format, type, width, height, depth, border);
2968 }
2969
2970 #if FEATURE_ES
2971 /* Here we convert a cpal compressed image into a regular glTexImage2D
2972 * call by decompressing the texture. If we really want to support cpal
2973 * textures in any driver this would have to be changed.
2974 */
2975 if (compressed && !error && dims == 2) {
2976 switch (internalFormat) {
2977 case GL_PALETTE4_RGB8_OES:
2978 case GL_PALETTE4_RGBA8_OES:
2979 case GL_PALETTE4_R5_G6_B5_OES:
2980 case GL_PALETTE4_RGBA4_OES:
2981 case GL_PALETTE4_RGB5_A1_OES:
2982 case GL_PALETTE8_RGB8_OES:
2983 case GL_PALETTE8_RGBA8_OES:
2984 case GL_PALETTE8_R5_G6_B5_OES:
2985 case GL_PALETTE8_RGBA4_OES:
2986 case GL_PALETTE8_RGB5_A1_OES:
2987 _mesa_cpal_compressed_teximage2d(target, level, internalFormat,
2988 width, height, imageSize, pixels);
2989 return;
2990 }
2991 }
2992 #endif
2993
2994 if (_mesa_is_proxy_texture(target)) {
2995 /* Proxy texture: just clear or set state depending on error checking */
2996 struct gl_texture_image *texImage =
2997 get_proxy_tex_image(ctx, target, level);
2998 gl_format texFormat = MESA_FORMAT_NONE;
2999
3000 if (!error) {
3001 /* No parameter errors. Choose a texture format and see if we
3002 * can really allocate the texture.
3003 */
3004 struct gl_texture_object *texObj =
3005 _mesa_get_current_tex_object(ctx, target);
3006 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
3007 internalFormat, format, type);
3008 if (!legal_texture_size(ctx, texFormat, width, height, depth)) {
3009 error = PROXY_ERROR;
3010 }
3011 }
3012
3013 if (error == PROXY_ERROR) {
3014 /* image too large, etc. Clear all proxy texture image parameters. */
3015 if (texImage)
3016 clear_teximage_fields(texImage);
3017 }
3018 else if (error == GL_FALSE) {
3019 /* no error: store the teximage parameters */
3020 if (texImage)
3021 _mesa_init_teximage_fields(ctx, texImage, width, height, depth,
3022 border, internalFormat, texFormat);
3023 }
3024 else {
3025 /* other, regular error (was already recorded) */
3026 }
3027 }
3028 else {
3029 /* non-proxy target */
3030 const GLuint face = _mesa_tex_target_to_face(target);
3031 struct gl_texture_object *texObj;
3032 struct gl_texture_image *texImage;
3033
3034 if (error) {
3035 return; /* error was recorded */
3036 }
3037
3038 /* Allow a hardware driver to just strip out the border, to provide
3039 * reliable but slightly incorrect hardware rendering instead of
3040 * rarely-tested software fallback rendering.
3041 */
3042 if (border && ctx->Const.StripTextureBorder) {
3043 strip_texture_border(target, &width, &height, &depth, unpack,
3044 &unpack_no_border);
3045 border = 0;
3046 unpack = &unpack_no_border;
3047 }
3048
3049 if (ctx->NewState & _NEW_PIXEL)
3050 _mesa_update_state(ctx);
3051
3052 texObj = _mesa_get_current_tex_object(ctx, target);
3053
3054 _mesa_lock_texture(ctx, texObj);
3055 {
3056 texImage = _mesa_get_tex_image(ctx, texObj, target, level);
3057
3058 if (!texImage) {
3059 _mesa_error(ctx, GL_OUT_OF_MEMORY, "%s%uD", func, dims);
3060 }
3061 else {
3062 gl_format texFormat;
3063
3064 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
3065
3066 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
3067 internalFormat, format,
3068 type);
3069
3070 if (legal_texture_size(ctx, texFormat, width, height, depth)) {
3071 _mesa_init_teximage_fields(ctx, texImage,
3072 width, height, depth,
3073 border, internalFormat, texFormat);
3074
3075 /* Give the texture to the driver. <pixels> may be null. */
3076 if (width > 0 && height > 0 && depth > 0) {
3077 if (compressed) {
3078 ctx->Driver.CompressedTexImage(ctx, dims, texImage,
3079 imageSize, pixels);
3080 }
3081 else {
3082 ctx->Driver.TexImage(ctx, dims, texImage, format,
3083 type, pixels, unpack);
3084 }
3085 }
3086
3087 check_gen_mipmap(ctx, target, texObj, level);
3088
3089 _mesa_update_fbo_texture(ctx, texObj, face, level);
3090
3091 _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
3092 }
3093 else {
3094 _mesa_error(ctx, GL_OUT_OF_MEMORY, "%s%uD", func, dims);
3095 }
3096 }
3097 }
3098 _mesa_unlock_texture(ctx, texObj);
3099 }
3100 }
3101
3102
3103 /*
3104 * Called from the API. Note that width includes the border.
3105 */
3106 void GLAPIENTRY
_mesa_TexImage1D(GLenum target,GLint level,GLint internalFormat,GLsizei width,GLint border,GLenum format,GLenum type,const GLvoid * pixels)3107 _mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
3108 GLsizei width, GLint border, GLenum format,
3109 GLenum type, const GLvoid *pixels )
3110 {
3111 GET_CURRENT_CONTEXT(ctx);
3112 teximage(ctx, GL_FALSE, 1, target, level, internalFormat, width, 1, 1,
3113 border, format, type, 0, pixels);
3114 }
3115
3116
3117 void GLAPIENTRY
_mesa_TexImage2D(GLenum target,GLint level,GLint internalFormat,GLsizei width,GLsizei height,GLint border,GLenum format,GLenum type,const GLvoid * pixels)3118 _mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
3119 GLsizei width, GLsizei height, GLint border,
3120 GLenum format, GLenum type,
3121 const GLvoid *pixels )
3122 {
3123 GET_CURRENT_CONTEXT(ctx);
3124 teximage(ctx, GL_FALSE, 2, target, level, internalFormat, width, height, 1,
3125 border, format, type, 0, pixels);
3126 }
3127
3128
3129 /*
3130 * Called by the API or display list executor.
3131 * Note that width and height include the border.
3132 */
3133 void GLAPIENTRY
_mesa_TexImage3D(GLenum target,GLint level,GLint internalFormat,GLsizei width,GLsizei height,GLsizei depth,GLint border,GLenum format,GLenum type,const GLvoid * pixels)3134 _mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
3135 GLsizei width, GLsizei height, GLsizei depth,
3136 GLint border, GLenum format, GLenum type,
3137 const GLvoid *pixels )
3138 {
3139 GET_CURRENT_CONTEXT(ctx);
3140 teximage(ctx, GL_FALSE, 3, target, level, internalFormat,
3141 width, height, depth,
3142 border, format, type, 0, pixels);
3143 }
3144
3145
3146 void GLAPIENTRY
_mesa_TexImage3DEXT(GLenum target,GLint level,GLenum internalFormat,GLsizei width,GLsizei height,GLsizei depth,GLint border,GLenum format,GLenum type,const GLvoid * pixels)3147 _mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat,
3148 GLsizei width, GLsizei height, GLsizei depth,
3149 GLint border, GLenum format, GLenum type,
3150 const GLvoid *pixels )
3151 {
3152 _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height,
3153 depth, border, format, type, pixels);
3154 }
3155
3156
3157 #if FEATURE_OES_EGL_image
3158 void GLAPIENTRY
_mesa_EGLImageTargetTexture2DOES(GLenum target,GLeglImageOES image)3159 _mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image)
3160 {
3161 struct gl_texture_object *texObj;
3162 struct gl_texture_image *texImage;
3163 bool valid_target;
3164 GET_CURRENT_CONTEXT(ctx);
3165 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3166
3167 switch (target) {
3168 case GL_TEXTURE_2D:
3169 valid_target = ctx->Extensions.OES_EGL_image;
3170 break;
3171 case GL_TEXTURE_EXTERNAL_OES:
3172 valid_target = ctx->Extensions.OES_EGL_image_external;
3173 break;
3174 default:
3175 valid_target = false;
3176 break;
3177 }
3178
3179 if (!valid_target) {
3180 _mesa_error(ctx, GL_INVALID_ENUM,
3181 "glEGLImageTargetTexture2D(target=%d)", target);
3182 return;
3183 }
3184
3185 if (ctx->NewState & _NEW_PIXEL)
3186 _mesa_update_state(ctx);
3187
3188 texObj = _mesa_get_current_tex_object(ctx, target);
3189 _mesa_lock_texture(ctx, texObj);
3190
3191 if (texObj->Immutable) {
3192 _mesa_error(ctx, GL_INVALID_OPERATION,
3193 "glEGLImageTargetTexture2D(texture is immutable)");
3194 _mesa_unlock_texture(ctx, texObj);
3195 return;
3196 }
3197
3198 texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
3199 if (!texImage) {
3200 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D");
3201 } else {
3202 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
3203
3204 ctx->Driver.EGLImageTargetTexture2D(ctx, target,
3205 texObj, texImage, image);
3206
3207 _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
3208 }
3209 _mesa_unlock_texture(ctx, texObj);
3210
3211 }
3212 #endif
3213
3214
3215
3216 /**
3217 * Implement all the glTexSubImage1/2/3D() functions.
3218 */
3219 static void
texsubimage(struct gl_context * ctx,GLuint dims,GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLsizei width,GLsizei height,GLsizei depth,GLenum format,GLenum type,const GLvoid * pixels)3220 texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
3221 GLint xoffset, GLint yoffset, GLint zoffset,
3222 GLsizei width, GLsizei height, GLsizei depth,
3223 GLenum format, GLenum type, const GLvoid *pixels )
3224 {
3225 struct gl_texture_object *texObj;
3226 struct gl_texture_image *texImage;
3227
3228 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3229
3230 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
3231 _mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n",
3232 dims,
3233 _mesa_lookup_enum_by_nr(target), level,
3234 xoffset, yoffset, zoffset, width, height, depth,
3235 _mesa_lookup_enum_by_nr(format),
3236 _mesa_lookup_enum_by_nr(type), pixels);
3237
3238 /* check target (proxies not allowed) */
3239 if (!legal_texsubimage_target(ctx, dims, target)) {
3240 _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)",
3241 dims, _mesa_lookup_enum_by_nr(target));
3242 return;
3243 }
3244
3245 if (ctx->NewState & _NEW_PIXEL)
3246 _mesa_update_state(ctx);
3247
3248 if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset,
3249 width, height, depth, format, type)) {
3250 return; /* error was detected */
3251 }
3252
3253 texObj = _mesa_get_current_tex_object(ctx, target);
3254
3255 _mesa_lock_texture(ctx, texObj);
3256 {
3257 texImage = _mesa_select_tex_image(ctx, texObj, target, level);
3258
3259 if (subtexture_error_check2(ctx, dims, target, level,
3260 xoffset, yoffset, zoffset,
3261 width, height, depth,
3262 format, type, texImage)) {
3263 /* error was recorded */
3264 }
3265 else if (width > 0 && height > 0 && depth > 0) {
3266 /* If we have a border, offset=-1 is legal. Bias by border width. */
3267 switch (dims) {
3268 case 3:
3269 if (target != GL_TEXTURE_2D_ARRAY)
3270 zoffset += texImage->Border;
3271 /* fall-through */
3272 case 2:
3273 if (target != GL_TEXTURE_1D_ARRAY)
3274 yoffset += texImage->Border;
3275 /* fall-through */
3276 case 1:
3277 xoffset += texImage->Border;
3278 }
3279
3280 ctx->Driver.TexSubImage(ctx, dims, texImage,
3281 xoffset, yoffset, zoffset,
3282 width, height, depth,
3283 format, type, pixels, &ctx->Unpack);
3284
3285 check_gen_mipmap(ctx, target, texObj, level);
3286
3287 ctx->NewState |= _NEW_TEXTURE;
3288 }
3289 }
3290 _mesa_unlock_texture(ctx, texObj);
3291 }
3292
3293
3294 void GLAPIENTRY
_mesa_TexSubImage1D(GLenum target,GLint level,GLint xoffset,GLsizei width,GLenum format,GLenum type,const GLvoid * pixels)3295 _mesa_TexSubImage1D( GLenum target, GLint level,
3296 GLint xoffset, GLsizei width,
3297 GLenum format, GLenum type,
3298 const GLvoid *pixels )
3299 {
3300 GET_CURRENT_CONTEXT(ctx);
3301 texsubimage(ctx, 1, target, level,
3302 xoffset, 0, 0,
3303 width, 1, 1,
3304 format, type, pixels);
3305 }
3306
3307
3308 void GLAPIENTRY
_mesa_TexSubImage2D(GLenum target,GLint level,GLint xoffset,GLint yoffset,GLsizei width,GLsizei height,GLenum format,GLenum type,const GLvoid * pixels)3309 _mesa_TexSubImage2D( GLenum target, GLint level,
3310 GLint xoffset, GLint yoffset,
3311 GLsizei width, GLsizei height,
3312 GLenum format, GLenum type,
3313 const GLvoid *pixels )
3314 {
3315 GET_CURRENT_CONTEXT(ctx);
3316 texsubimage(ctx, 2, target, level,
3317 xoffset, yoffset, 0,
3318 width, height, 1,
3319 format, type, pixels);
3320 }
3321
3322
3323
3324 void GLAPIENTRY
_mesa_TexSubImage3D(GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLsizei width,GLsizei height,GLsizei depth,GLenum format,GLenum type,const GLvoid * pixels)3325 _mesa_TexSubImage3D( GLenum target, GLint level,
3326 GLint xoffset, GLint yoffset, GLint zoffset,
3327 GLsizei width, GLsizei height, GLsizei depth,
3328 GLenum format, GLenum type,
3329 const GLvoid *pixels )
3330 {
3331 GET_CURRENT_CONTEXT(ctx);
3332 texsubimage(ctx, 3, target, level,
3333 xoffset, yoffset, zoffset,
3334 width, height, depth,
3335 format, type, pixels);
3336 }
3337
3338
3339
3340 /**
3341 * For glCopyTexSubImage, return the source renderbuffer to copy texel data
3342 * from. This depends on whether the texture contains color or depth values.
3343 */
3344 static struct gl_renderbuffer *
get_copy_tex_image_source(struct gl_context * ctx,gl_format texFormat)3345 get_copy_tex_image_source(struct gl_context *ctx, gl_format texFormat)
3346 {
3347 if (_mesa_get_format_bits(texFormat, GL_DEPTH_BITS) > 0) {
3348 /* reading from depth/stencil buffer */
3349 return ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
3350 }
3351 else {
3352 /* copying from color buffer */
3353 return ctx->ReadBuffer->_ColorReadBuffer;
3354 }
3355 }
3356
3357
3358
3359 /**
3360 * Implement the glCopyTexImage1/2D() functions.
3361 */
3362 static void
copyteximage(struct gl_context * ctx,GLuint dims,GLenum target,GLint level,GLenum internalFormat,GLint x,GLint y,GLsizei width,GLsizei height,GLint border)3363 copyteximage(struct gl_context *ctx, GLuint dims,
3364 GLenum target, GLint level, GLenum internalFormat,
3365 GLint x, GLint y, GLsizei width, GLsizei height, GLint border )
3366 {
3367 struct gl_texture_object *texObj;
3368 struct gl_texture_image *texImage;
3369 const GLuint face = _mesa_tex_target_to_face(target);
3370
3371 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3372
3373 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
3374 _mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",
3375 dims,
3376 _mesa_lookup_enum_by_nr(target), level,
3377 _mesa_lookup_enum_by_nr(internalFormat),
3378 x, y, width, height, border);
3379
3380 if (ctx->NewState & NEW_COPY_TEX_STATE)
3381 _mesa_update_state(ctx);
3382
3383 if (copytexture_error_check(ctx, dims, target, level, internalFormat,
3384 width, height, border))
3385 return;
3386
3387 texObj = _mesa_get_current_tex_object(ctx, target);
3388
3389 if (border && ctx->Const.StripTextureBorder) {
3390 x += border;
3391 width -= border * 2;
3392 if (dims == 2) {
3393 y += border;
3394 height -= border * 2;
3395 }
3396 border = 0;
3397 }
3398
3399 _mesa_lock_texture(ctx, texObj);
3400 {
3401 texImage = _mesa_get_tex_image(ctx, texObj, target, level);
3402
3403 if (!texImage) {
3404 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
3405 }
3406 else {
3407 /* choose actual hw format */
3408 gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,
3409 target, level,
3410 internalFormat,
3411 GL_NONE, GL_NONE);
3412
3413 if (legal_texture_size(ctx, texFormat, width, height, 1)) {
3414 GLint srcX = x, srcY = y, dstX = 0, dstY = 0, dstZ = 0;
3415
3416 /* Free old texture image */
3417 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
3418
3419 _mesa_init_teximage_fields(ctx, texImage, width, height, 1,
3420 border, internalFormat, texFormat);
3421
3422 /* Allocate texture memory (no pixel data yet) */
3423 ctx->Driver.TexImage(ctx, dims, texImage,
3424 GL_NONE, GL_NONE,
3425 NULL, &ctx->Unpack);
3426
3427 if (_mesa_clip_copytexsubimage(ctx, &dstX, &dstY, &srcX, &srcY,
3428 &width, &height)) {
3429 struct gl_renderbuffer *srcRb =
3430 get_copy_tex_image_source(ctx, texImage->TexFormat);
3431
3432 ctx->Driver.CopyTexSubImage(ctx, dims, texImage, dstX, dstY, dstZ,
3433 srcRb, srcX, srcY, width, height);
3434 }
3435
3436 check_gen_mipmap(ctx, target, texObj, level);
3437
3438 _mesa_update_fbo_texture(ctx, texObj, face, level);
3439
3440 _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
3441 }
3442 else {
3443 /* probably too large of image */
3444 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
3445 }
3446 }
3447 }
3448 _mesa_unlock_texture(ctx, texObj);
3449 }
3450
3451
3452
3453 void GLAPIENTRY
_mesa_CopyTexImage1D(GLenum target,GLint level,GLenum internalFormat,GLint x,GLint y,GLsizei width,GLint border)3454 _mesa_CopyTexImage1D( GLenum target, GLint level,
3455 GLenum internalFormat,
3456 GLint x, GLint y,
3457 GLsizei width, GLint border )
3458 {
3459 GET_CURRENT_CONTEXT(ctx);
3460 copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border);
3461 }
3462
3463
3464
3465 void GLAPIENTRY
_mesa_CopyTexImage2D(GLenum target,GLint level,GLenum internalFormat,GLint x,GLint y,GLsizei width,GLsizei height,GLint border)3466 _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
3467 GLint x, GLint y, GLsizei width, GLsizei height,
3468 GLint border )
3469 {
3470 GET_CURRENT_CONTEXT(ctx);
3471 copyteximage(ctx, 2, target, level, internalFormat,
3472 x, y, width, height, border);
3473 }
3474
3475
3476
3477 /**
3478 * Implementation for glCopyTexSubImage1/2/3D() functions.
3479 */
3480 static void
copytexsubimage(struct gl_context * ctx,GLuint dims,GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLint x,GLint y,GLsizei width,GLsizei height)3481 copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
3482 GLint xoffset, GLint yoffset, GLint zoffset,
3483 GLint x, GLint y, GLsizei width, GLsizei height)
3484 {
3485 struct gl_texture_object *texObj;
3486 struct gl_texture_image *texImage;
3487
3488 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3489
3490 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
3491 _mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n",
3492 dims,
3493 _mesa_lookup_enum_by_nr(target),
3494 level, xoffset, yoffset, zoffset, x, y, width, height);
3495
3496 if (ctx->NewState & NEW_COPY_TEX_STATE)
3497 _mesa_update_state(ctx);
3498
3499 if (copytexsubimage_error_check1(ctx, dims, target, level))
3500 return;
3501
3502 texObj = _mesa_get_current_tex_object(ctx, target);
3503
3504 _mesa_lock_texture(ctx, texObj);
3505 {
3506 texImage = _mesa_select_tex_image(ctx, texObj, target, level);
3507
3508 if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset,
3509 zoffset, width, height, texImage)) {
3510 /* error was recored */
3511 }
3512 else {
3513 /* If we have a border, offset=-1 is legal. Bias by border width. */
3514 switch (dims) {
3515 case 3:
3516 if (target != GL_TEXTURE_2D_ARRAY)
3517 zoffset += texImage->Border;
3518 /* fall-through */
3519 case 2:
3520 if (target != GL_TEXTURE_1D_ARRAY)
3521 yoffset += texImage->Border;
3522 /* fall-through */
3523 case 1:
3524 xoffset += texImage->Border;
3525 }
3526
3527 if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y,
3528 &width, &height)) {
3529 struct gl_renderbuffer *srcRb =
3530 get_copy_tex_image_source(ctx, texImage->TexFormat);
3531
3532 ctx->Driver.CopyTexSubImage(ctx, dims, texImage,
3533 xoffset, yoffset, zoffset,
3534 srcRb, x, y, width, height);
3535
3536 check_gen_mipmap(ctx, target, texObj, level);
3537
3538 ctx->NewState |= _NEW_TEXTURE;
3539 }
3540 }
3541 }
3542 _mesa_unlock_texture(ctx, texObj);
3543 }
3544
3545
3546 void GLAPIENTRY
_mesa_CopyTexSubImage1D(GLenum target,GLint level,GLint xoffset,GLint x,GLint y,GLsizei width)3547 _mesa_CopyTexSubImage1D( GLenum target, GLint level,
3548 GLint xoffset, GLint x, GLint y, GLsizei width )
3549 {
3550 GET_CURRENT_CONTEXT(ctx);
3551 copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1);
3552 }
3553
3554
3555
3556 void GLAPIENTRY
_mesa_CopyTexSubImage2D(GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint x,GLint y,GLsizei width,GLsizei height)3557 _mesa_CopyTexSubImage2D( GLenum target, GLint level,
3558 GLint xoffset, GLint yoffset,
3559 GLint x, GLint y, GLsizei width, GLsizei height )
3560 {
3561 GET_CURRENT_CONTEXT(ctx);
3562 copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y,
3563 width, height);
3564 }
3565
3566
3567
3568 void GLAPIENTRY
_mesa_CopyTexSubImage3D(GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLint x,GLint y,GLsizei width,GLsizei height)3569 _mesa_CopyTexSubImage3D( GLenum target, GLint level,
3570 GLint xoffset, GLint yoffset, GLint zoffset,
3571 GLint x, GLint y, GLsizei width, GLsizei height )
3572 {
3573 GET_CURRENT_CONTEXT(ctx);
3574 copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset,
3575 x, y, width, height);
3576 }
3577
3578
3579
3580
3581 /**********************************************************************/
3582 /****** Compressed Textures ******/
3583 /**********************************************************************/
3584
3585
3586 /**
3587 * Error checking for glCompressedTexSubImage[123]D().
3588 * \warning There are some bad assumptions here about the size of compressed
3589 * texture tiles (multiple of 4) used to test the validity of the
3590 * offset and size parameters.
3591 * \return error code or GL_NO_ERROR.
3592 */
3593 static GLenum
compressed_subtexture_error_check(struct gl_context * ctx,GLint dimensions,GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLsizei width,GLsizei height,GLsizei depth,GLenum format,GLsizei imageSize)3594 compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions,
3595 GLenum target, GLint level,
3596 GLint xoffset, GLint yoffset, GLint zoffset,
3597 GLsizei width, GLsizei height, GLsizei depth,
3598 GLenum format, GLsizei imageSize)
3599 {
3600 GLint expectedSize, maxLevels = 0, maxTextureSize;
3601 GLuint bw, bh;
3602 (void) zoffset;
3603
3604 if (dimensions == 1) {
3605 /* 1D compressed textures not allowed */
3606 return GL_INVALID_ENUM;
3607 }
3608 else if (dimensions == 2) {
3609 if (target == GL_PROXY_TEXTURE_2D) {
3610 maxLevels = ctx->Const.MaxTextureLevels;
3611 }
3612 else if (target == GL_TEXTURE_2D) {
3613 maxLevels = ctx->Const.MaxTextureLevels;
3614 }
3615 else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
3616 if (!ctx->Extensions.ARB_texture_cube_map)
3617 return GL_INVALID_ENUM; /*target*/
3618 maxLevels = ctx->Const.MaxCubeTextureLevels;
3619 }
3620 else if (_mesa_is_cube_face(target)) {
3621 if (!ctx->Extensions.ARB_texture_cube_map)
3622 return GL_INVALID_ENUM; /*target*/
3623 maxLevels = ctx->Const.MaxCubeTextureLevels;
3624 }
3625 else {
3626 return GL_INVALID_ENUM; /*target*/
3627 }
3628 }
3629 else if (dimensions == 3) {
3630 /* 3D compressed textures not allowed */
3631 return GL_INVALID_ENUM;
3632 }
3633
3634 maxTextureSize = 1 << (maxLevels - 1);
3635
3636 /* this will catch any invalid compressed format token */
3637 if (!_mesa_is_compressed_format(ctx, format))
3638 return GL_INVALID_ENUM;
3639
3640 if (width < 0 || width > maxTextureSize)
3641 return GL_INVALID_VALUE;
3642
3643 if ((height < 0 || height > maxTextureSize)
3644 && dimensions > 1)
3645 return GL_INVALID_VALUE;
3646
3647 if (level < 0 || level >= maxLevels)
3648 return GL_INVALID_VALUE;
3649
3650 /*
3651 * do checks which depend on compression block size
3652 */
3653 get_compressed_block_size(format, &bw, &bh);
3654
3655 if ((xoffset % bw != 0) || (yoffset % bh != 0))
3656 return GL_INVALID_OPERATION;
3657
3658 if ((width % bw != 0) && width != 2 && width != 1)
3659 return GL_INVALID_OPERATION;
3660
3661 if ((height % bh != 0) && height != 2 && height != 1)
3662 return GL_INVALID_OPERATION;
3663
3664 expectedSize = compressed_tex_size(width, height, depth, format);
3665 if (expectedSize != imageSize)
3666 return GL_INVALID_VALUE;
3667
3668 return GL_NO_ERROR;
3669 }
3670
3671
3672 /**
3673 * Do second part of glCompressedTexSubImage error checking.
3674 * \return GL_TRUE if error found, GL_FALSE otherwise.
3675 */
3676 static GLboolean
compressed_subtexture_error_check2(struct gl_context * ctx,GLuint dims,GLsizei width,GLsizei height,GLsizei depth,GLenum format,struct gl_texture_image * texImage)3677 compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims,
3678 GLsizei width, GLsizei height,
3679 GLsizei depth, GLenum format,
3680 struct gl_texture_image *texImage)
3681 {
3682 if (!texImage) {
3683 _mesa_error(ctx, GL_INVALID_OPERATION,
3684 "glCompressedTexSubImage%uD(undefined image level)", dims);
3685 return GL_TRUE;
3686 }
3687
3688 if ((GLint) format != texImage->InternalFormat) {
3689 _mesa_error(ctx, GL_INVALID_OPERATION,
3690 "glCompressedTexSubImage%uD(format=0x%x)", dims, format);
3691 return GL_TRUE;
3692 }
3693
3694 if (compressedteximage_only_format(ctx, format)) {
3695 _mesa_error(ctx, GL_INVALID_OPERATION,
3696 "glCompressedTexSubImage%uD(format=0x%x cannot be updated)"
3697 , dims, format);
3698 return GL_TRUE;
3699 }
3700
3701 if (((width == 1 || width == 2) &&
3702 width != (GLsizei) texImage->Width) ||
3703 (width > (GLsizei) texImage->Width)) {
3704 _mesa_error(ctx, GL_INVALID_VALUE,
3705 "glCompressedTexSubImage%uD(width=%d)", dims, width);
3706 return GL_TRUE;
3707 }
3708
3709 if (dims >= 2) {
3710 if (((height == 1 || height == 2) &&
3711 height != (GLsizei) texImage->Height) ||
3712 (height > (GLsizei) texImage->Height)) {
3713 _mesa_error(ctx, GL_INVALID_VALUE,
3714 "glCompressedTexSubImage%uD(height=%d)", dims, height);
3715 return GL_TRUE;
3716 }
3717 }
3718
3719 if (dims >= 3) {
3720 if (((depth == 1 || depth == 2) &&
3721 depth != (GLsizei) texImage->Depth) ||
3722 (depth > (GLsizei) texImage->Depth)) {
3723 _mesa_error(ctx, GL_INVALID_VALUE,
3724 "glCompressedTexSubImage%uD(depth=%d)", dims, depth);
3725 return GL_TRUE;
3726 }
3727 }
3728
3729 return GL_FALSE;
3730 }
3731
3732
3733 void GLAPIENTRY
_mesa_CompressedTexImage1DARB(GLenum target,GLint level,GLenum internalFormat,GLsizei width,GLint border,GLsizei imageSize,const GLvoid * data)3734 _mesa_CompressedTexImage1DARB(GLenum target, GLint level,
3735 GLenum internalFormat, GLsizei width,
3736 GLint border, GLsizei imageSize,
3737 const GLvoid *data)
3738 {
3739 GET_CURRENT_CONTEXT(ctx);
3740 teximage(ctx, GL_TRUE, 1, target, level, internalFormat,
3741 width, 1, 1, border, GL_NONE, GL_NONE, imageSize, data);
3742 }
3743
3744
3745 void GLAPIENTRY
_mesa_CompressedTexImage2DARB(GLenum target,GLint level,GLenum internalFormat,GLsizei width,GLsizei height,GLint border,GLsizei imageSize,const GLvoid * data)3746 _mesa_CompressedTexImage2DARB(GLenum target, GLint level,
3747 GLenum internalFormat, GLsizei width,
3748 GLsizei height, GLint border, GLsizei imageSize,
3749 const GLvoid *data)
3750 {
3751 GET_CURRENT_CONTEXT(ctx);
3752 teximage(ctx, GL_TRUE, 2, target, level, internalFormat,
3753 width, height, 1, border, GL_NONE, GL_NONE, imageSize, data);
3754 }
3755
3756
3757 void GLAPIENTRY
_mesa_CompressedTexImage3DARB(GLenum target,GLint level,GLenum internalFormat,GLsizei width,GLsizei height,GLsizei depth,GLint border,GLsizei imageSize,const GLvoid * data)3758 _mesa_CompressedTexImage3DARB(GLenum target, GLint level,
3759 GLenum internalFormat, GLsizei width,
3760 GLsizei height, GLsizei depth, GLint border,
3761 GLsizei imageSize, const GLvoid *data)
3762 {
3763 GET_CURRENT_CONTEXT(ctx);
3764 teximage(ctx, GL_TRUE, 3, target, level, internalFormat,
3765 width, height, depth, border, GL_NONE, GL_NONE, imageSize, data);
3766 }
3767
3768
3769 /**
3770 * Common helper for glCompressedTexSubImage1/2/3D().
3771 */
3772 static void
compressed_tex_sub_image(GLuint dims,GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLsizei width,GLsizei height,GLsizei depth,GLenum format,GLsizei imageSize,const GLvoid * data)3773 compressed_tex_sub_image(GLuint dims, GLenum target, GLint level,
3774 GLint xoffset, GLint yoffset, GLint zoffset,
3775 GLsizei width, GLsizei height, GLsizei depth,
3776 GLenum format, GLsizei imageSize, const GLvoid *data)
3777 {
3778 struct gl_texture_object *texObj;
3779 struct gl_texture_image *texImage;
3780 GLenum error;
3781 GET_CURRENT_CONTEXT(ctx);
3782 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3783
3784 error = compressed_subtexture_error_check(ctx, dims, target, level,
3785 xoffset, 0, 0, /* pos */
3786 width, height, depth, /* size */
3787 format, imageSize);
3788 if (error) {
3789 _mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims);
3790 return;
3791 }
3792
3793 texObj = _mesa_get_current_tex_object(ctx, target);
3794
3795 _mesa_lock_texture(ctx, texObj);
3796 {
3797 texImage = _mesa_select_tex_image(ctx, texObj, target, level);
3798
3799 if (compressed_subtexture_error_check2(ctx, dims, width, height, depth,
3800 format, texImage)) {
3801 /* error was recorded */
3802 }
3803 else if (width > 0 && height > 0 && depth > 0) {
3804 ctx->Driver.CompressedTexSubImage(ctx, dims, texImage,
3805 xoffset, yoffset, zoffset,
3806 width, height, depth,
3807 format, imageSize, data);
3808
3809 check_gen_mipmap(ctx, target, texObj, level);
3810
3811 ctx->NewState |= _NEW_TEXTURE;
3812 }
3813 }
3814 _mesa_unlock_texture(ctx, texObj);
3815 }
3816
3817
3818 void GLAPIENTRY
_mesa_CompressedTexSubImage1DARB(GLenum target,GLint level,GLint xoffset,GLsizei width,GLenum format,GLsizei imageSize,const GLvoid * data)3819 _mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
3820 GLsizei width, GLenum format,
3821 GLsizei imageSize, const GLvoid *data)
3822 {
3823 compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1,
3824 format, imageSize, data);
3825 }
3826
3827
3828 void GLAPIENTRY
_mesa_CompressedTexSubImage2DARB(GLenum target,GLint level,GLint xoffset,GLint yoffset,GLsizei width,GLsizei height,GLenum format,GLsizei imageSize,const GLvoid * data)3829 _mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
3830 GLint yoffset, GLsizei width, GLsizei height,
3831 GLenum format, GLsizei imageSize,
3832 const GLvoid *data)
3833 {
3834 compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0,
3835 width, height, 1, format, imageSize, data);
3836 }
3837
3838
3839 void GLAPIENTRY
_mesa_CompressedTexSubImage3DARB(GLenum target,GLint level,GLint xoffset,GLint yoffset,GLint zoffset,GLsizei width,GLsizei height,GLsizei depth,GLenum format,GLsizei imageSize,const GLvoid * data)3840 _mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
3841 GLint yoffset, GLint zoffset, GLsizei width,
3842 GLsizei height, GLsizei depth, GLenum format,
3843 GLsizei imageSize, const GLvoid *data)
3844 {
3845 compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset,
3846 width, height, depth, format, imageSize, data);
3847 }
3848
3849 static gl_format
get_texbuffer_format(const struct gl_context * ctx,GLenum internalFormat)3850 get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
3851 {
3852 switch (internalFormat) {
3853 case GL_ALPHA8:
3854 return MESA_FORMAT_A8;
3855 case GL_ALPHA16:
3856 return MESA_FORMAT_A16;
3857 case GL_ALPHA16F_ARB:
3858 return MESA_FORMAT_ALPHA_FLOAT16;
3859 case GL_ALPHA32F_ARB:
3860 return MESA_FORMAT_ALPHA_FLOAT32;
3861 case GL_ALPHA8I_EXT:
3862 return MESA_FORMAT_ALPHA_INT8;
3863 case GL_ALPHA16I_EXT:
3864 return MESA_FORMAT_ALPHA_INT16;
3865 case GL_ALPHA32I_EXT:
3866 return MESA_FORMAT_ALPHA_INT32;
3867 case GL_ALPHA8UI_EXT:
3868 return MESA_FORMAT_ALPHA_UINT8;
3869 case GL_ALPHA16UI_EXT:
3870 return MESA_FORMAT_ALPHA_UINT16;
3871 case GL_ALPHA32UI_EXT:
3872 return MESA_FORMAT_ALPHA_UINT32;
3873 case GL_LUMINANCE8:
3874 return MESA_FORMAT_L8;
3875 case GL_LUMINANCE16:
3876 return MESA_FORMAT_L16;
3877 case GL_LUMINANCE16F_ARB:
3878 return MESA_FORMAT_LUMINANCE_FLOAT16;
3879 case GL_LUMINANCE32F_ARB:
3880 return MESA_FORMAT_LUMINANCE_FLOAT32;
3881 case GL_LUMINANCE8I_EXT:
3882 return MESA_FORMAT_LUMINANCE_INT8;
3883 case GL_LUMINANCE16I_EXT:
3884 return MESA_FORMAT_LUMINANCE_INT16;
3885 case GL_LUMINANCE32I_EXT:
3886 return MESA_FORMAT_LUMINANCE_INT32;
3887 case GL_LUMINANCE8UI_EXT:
3888 return MESA_FORMAT_LUMINANCE_UINT8;
3889 case GL_LUMINANCE16UI_EXT:
3890 return MESA_FORMAT_LUMINANCE_UINT16;
3891 case GL_LUMINANCE32UI_EXT:
3892 return MESA_FORMAT_LUMINANCE_UINT32;
3893 case GL_LUMINANCE8_ALPHA8:
3894 return MESA_FORMAT_AL88;
3895 case GL_LUMINANCE16_ALPHA16:
3896 return MESA_FORMAT_AL1616;
3897 case GL_LUMINANCE_ALPHA16F_ARB:
3898 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
3899 case GL_LUMINANCE_ALPHA32F_ARB:
3900 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
3901 case GL_LUMINANCE_ALPHA8I_EXT:
3902 return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
3903 case GL_LUMINANCE_ALPHA16I_EXT:
3904 return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
3905 case GL_LUMINANCE_ALPHA32I_EXT:
3906 return MESA_FORMAT_LUMINANCE_ALPHA_INT16;
3907 case GL_LUMINANCE_ALPHA8UI_EXT:
3908 return MESA_FORMAT_LUMINANCE_ALPHA_UINT8;
3909 case GL_LUMINANCE_ALPHA16UI_EXT:
3910 return MESA_FORMAT_LUMINANCE_ALPHA_UINT16;
3911 case GL_LUMINANCE_ALPHA32UI_EXT:
3912 return MESA_FORMAT_LUMINANCE_ALPHA_UINT32;
3913 case GL_INTENSITY8:
3914 return MESA_FORMAT_I8;
3915 case GL_INTENSITY16:
3916 return MESA_FORMAT_I16;
3917 case GL_INTENSITY16F_ARB:
3918 return MESA_FORMAT_INTENSITY_FLOAT16;
3919 case GL_INTENSITY32F_ARB:
3920 return MESA_FORMAT_INTENSITY_FLOAT32;
3921 case GL_INTENSITY8I_EXT:
3922 return MESA_FORMAT_INTENSITY_INT8;
3923 case GL_INTENSITY16I_EXT:
3924 return MESA_FORMAT_INTENSITY_INT16;
3925 case GL_INTENSITY32I_EXT:
3926 return MESA_FORMAT_INTENSITY_INT32;
3927 case GL_INTENSITY8UI_EXT:
3928 return MESA_FORMAT_INTENSITY_UINT8;
3929 case GL_INTENSITY16UI_EXT:
3930 return MESA_FORMAT_INTENSITY_UINT16;
3931 case GL_INTENSITY32UI_EXT:
3932 return MESA_FORMAT_INTENSITY_UINT32;
3933 case GL_RGBA8:
3934 return MESA_FORMAT_RGBA8888_REV;
3935 case GL_RGBA16:
3936 return MESA_FORMAT_RGBA_16;
3937 case GL_RGBA16F_ARB:
3938 return MESA_FORMAT_RGBA_FLOAT16;
3939 case GL_RGBA32F_ARB:
3940 return MESA_FORMAT_RGBA_FLOAT32;
3941 case GL_RGBA8I_EXT:
3942 return MESA_FORMAT_RGBA_INT8;
3943 case GL_RGBA16I_EXT:
3944 return MESA_FORMAT_RGBA_INT16;
3945 case GL_RGBA32I_EXT:
3946 return MESA_FORMAT_RGBA_INT32;
3947 case GL_RGBA8UI_EXT:
3948 return MESA_FORMAT_RGBA_UINT8;
3949 case GL_RGBA16UI_EXT:
3950 return MESA_FORMAT_RGBA_UINT16;
3951 case GL_RGBA32UI_EXT:
3952 return MESA_FORMAT_RGBA_UINT32;
3953
3954 case GL_RG8:
3955 return MESA_FORMAT_GR88;
3956 case GL_RG16:
3957 return MESA_FORMAT_RG1616;
3958 case GL_RG16F:
3959 return MESA_FORMAT_RG_FLOAT16;
3960 case GL_RG32F:
3961 return MESA_FORMAT_RG_FLOAT32;
3962 case GL_RG8I:
3963 return MESA_FORMAT_RG_INT8;
3964 case GL_RG16I:
3965 return MESA_FORMAT_RG_INT16;
3966 case GL_RG32I:
3967 return MESA_FORMAT_RG_INT32;
3968 case GL_RG8UI:
3969 return MESA_FORMAT_RG_UINT8;
3970 case GL_RG16UI:
3971 return MESA_FORMAT_RG_UINT16;
3972 case GL_RG32UI:
3973 return MESA_FORMAT_RG_UINT32;
3974
3975 case GL_R8:
3976 return MESA_FORMAT_R8;
3977 case GL_R16:
3978 return MESA_FORMAT_R16;
3979 case GL_R16F:
3980 return MESA_FORMAT_R_FLOAT16;
3981 case GL_R32F:
3982 return MESA_FORMAT_R_FLOAT32;
3983 case GL_R8I:
3984 return MESA_FORMAT_R_INT8;
3985 case GL_R16I:
3986 return MESA_FORMAT_R_INT16;
3987 case GL_R32I:
3988 return MESA_FORMAT_R_INT32;
3989 case GL_R8UI:
3990 return MESA_FORMAT_R_UINT8;
3991 case GL_R16UI:
3992 return MESA_FORMAT_R_UINT16;
3993 case GL_R32UI:
3994 return MESA_FORMAT_R_UINT32;
3995
3996 default:
3997 return MESA_FORMAT_NONE;
3998 }
3999 }
4000
4001 static gl_format
validate_texbuffer_format(const struct gl_context * ctx,GLenum internalFormat)4002 validate_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
4003 {
4004 gl_format format = get_texbuffer_format(ctx, internalFormat);
4005 GLenum datatype;
4006
4007 if (format == MESA_FORMAT_NONE)
4008 return MESA_FORMAT_NONE;
4009
4010 datatype = _mesa_get_format_datatype(format);
4011 if (datatype == GL_FLOAT && !ctx->Extensions.ARB_texture_float)
4012 return MESA_FORMAT_NONE;
4013
4014 if (datatype == GL_HALF_FLOAT && !ctx->Extensions.ARB_half_float_pixel)
4015 return MESA_FORMAT_NONE;
4016
4017 /* The GL_ARB_texture_rg and GL_ARB_texture_buffer_object specs don't make
4018 * any mention of R/RG formats, but they appear in the GL 3.1 core
4019 * specification.
4020 */
4021 if (ctx->Version <= 30) {
4022 GLenum base_format = _mesa_get_format_base_format(format);
4023
4024 if (base_format == GL_R || base_format == GL_RG)
4025 return MESA_FORMAT_NONE;
4026 }
4027 return format;
4028 }
4029
4030
4031 /** GL_ARB_texture_buffer_object */
4032 void GLAPIENTRY
_mesa_TexBuffer(GLenum target,GLenum internalFormat,GLuint buffer)4033 _mesa_TexBuffer(GLenum target, GLenum internalFormat, GLuint buffer)
4034 {
4035 struct gl_texture_object *texObj;
4036 struct gl_buffer_object *bufObj;
4037 gl_format format;
4038
4039 GET_CURRENT_CONTEXT(ctx);
4040 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
4041
4042 if (!(ctx->Extensions.ARB_texture_buffer_object
4043 && _mesa_is_desktop_gl(ctx))) {
4044 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer");
4045 return;
4046 }
4047
4048 if (target != GL_TEXTURE_BUFFER_ARB) {
4049 _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(target)");
4050 return;
4051 }
4052
4053 format = validate_texbuffer_format(ctx, internalFormat);
4054 if (format == MESA_FORMAT_NONE) {
4055 _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(internalFormat 0x%x)",
4056 internalFormat);
4057 return;
4058 }
4059
4060 bufObj = _mesa_lookup_bufferobj(ctx, buffer);
4061 if (buffer && !bufObj) {
4062 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer(buffer %u)", buffer);
4063 return;
4064 }
4065
4066 texObj = _mesa_get_current_tex_object(ctx, target);
4067
4068 _mesa_lock_texture(ctx, texObj);
4069 {
4070 _mesa_reference_buffer_object(ctx, &texObj->BufferObject, bufObj);
4071 texObj->BufferObjectFormat = internalFormat;
4072 texObj->_BufferObjectFormat = format;
4073 }
4074 _mesa_unlock_texture(ctx, texObj);
4075 }
4076