1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2005 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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include <stdio.h>
27 #include "errors.h"
28 #include "mtypes.h"
29 #include "attrib.h"
30 #include "enums.h"
31 #include "formats.h"
32 #include "hash.h"
33
34 #include "macros.h"
35 #include "debug.h"
36 #include "get.h"
37 #include "pixelstore.h"
38 #include "readpix.h"
39 #include "texobj.h"
40
41
42 static const char *
tex_target_name(GLenum tgt)43 tex_target_name(GLenum tgt)
44 {
45 static const struct {
46 GLenum target;
47 const char *name;
48 } tex_targets[] = {
49 { GL_TEXTURE_1D, "GL_TEXTURE_1D" },
50 { GL_TEXTURE_2D, "GL_TEXTURE_2D" },
51 { GL_TEXTURE_3D, "GL_TEXTURE_3D" },
52 { GL_TEXTURE_CUBE_MAP, "GL_TEXTURE_CUBE_MAP" },
53 { GL_TEXTURE_RECTANGLE, "GL_TEXTURE_RECTANGLE" },
54 { GL_TEXTURE_1D_ARRAY_EXT, "GL_TEXTURE_1D_ARRAY" },
55 { GL_TEXTURE_2D_ARRAY_EXT, "GL_TEXTURE_2D_ARRAY" },
56 { GL_TEXTURE_CUBE_MAP_ARRAY, "GL_TEXTURE_CUBE_MAP_ARRAY" },
57 { GL_TEXTURE_BUFFER, "GL_TEXTURE_BUFFER" },
58 { GL_TEXTURE_2D_MULTISAMPLE, "GL_TEXTURE_2D_MULTISAMPLE" },
59 { GL_TEXTURE_2D_MULTISAMPLE_ARRAY, "GL_TEXTURE_2D_MULTISAMPLE_ARRAY" },
60 { GL_TEXTURE_EXTERNAL_OES, "GL_TEXTURE_EXTERNAL_OES" }
61 };
62 GLuint i;
63 STATIC_ASSERT(ARRAY_SIZE(tex_targets) == NUM_TEXTURE_TARGETS);
64 for (i = 0; i < ARRAY_SIZE(tex_targets); i++) {
65 if (tex_targets[i].target == tgt)
66 return tex_targets[i].name;
67 }
68 return "UNKNOWN TEX TARGET";
69 }
70
71
72 void
_mesa_print_state(const char * msg,GLuint state)73 _mesa_print_state( const char *msg, GLuint state )
74 {
75 _mesa_debug(NULL,
76 "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
77 msg,
78 state,
79 (state & _NEW_MODELVIEW) ? "ctx->ModelView, " : "",
80 (state & _NEW_PROJECTION) ? "ctx->Projection, " : "",
81 (state & _NEW_TEXTURE_MATRIX) ? "ctx->TextureMatrix, " : "",
82 (state & _NEW_COLOR) ? "ctx->Color, " : "",
83 (state & _NEW_DEPTH) ? "ctx->Depth, " : "",
84 (state & _NEW_FOG) ? "ctx->Fog, " : "",
85 (state & _NEW_HINT) ? "ctx->Hint, " : "",
86 (state & _NEW_LIGHT) ? "ctx->Light, " : "",
87 (state & _NEW_LINE) ? "ctx->Line, " : "",
88 (state & _NEW_PIXEL) ? "ctx->Pixel, " : "",
89 (state & _NEW_POINT) ? "ctx->Point, " : "",
90 (state & _NEW_POLYGON) ? "ctx->Polygon, " : "",
91 (state & _NEW_POLYGONSTIPPLE) ? "ctx->PolygonStipple, " : "",
92 (state & _NEW_SCISSOR) ? "ctx->Scissor, " : "",
93 (state & _NEW_STENCIL) ? "ctx->Stencil, " : "",
94 (state & _NEW_TEXTURE_OBJECT) ? "ctx->Texture(Object), " : "",
95 (state & _NEW_TRANSFORM) ? "ctx->Transform, " : "",
96 (state & _NEW_VIEWPORT) ? "ctx->Viewport, " : "",
97 (state & _NEW_TEXTURE_STATE) ? "ctx->Texture(State), " : "",
98 (state & _NEW_RENDERMODE) ? "ctx->RenderMode, " : "",
99 (state & _NEW_BUFFERS) ? "ctx->Visual, ctx->DrawBuffer,, " : "");
100 }
101
102
103
104 /**
105 * Print information about this Mesa version and build options.
106 */
_mesa_print_info(struct gl_context * ctx)107 void _mesa_print_info( struct gl_context *ctx )
108 {
109 _mesa_debug(NULL, "Mesa GL_VERSION = %s\n",
110 (char *) _mesa_GetString(GL_VERSION));
111 _mesa_debug(NULL, "Mesa GL_RENDERER = %s\n",
112 (char *) _mesa_GetString(GL_RENDERER));
113 _mesa_debug(NULL, "Mesa GL_VENDOR = %s\n",
114 (char *) _mesa_GetString(GL_VENDOR));
115
116 /* use ctx as GL_EXTENSIONS will not work on 3.0 or higher
117 * core contexts.
118 */
119 _mesa_debug(NULL, "Mesa GL_EXTENSIONS = %s\n", ctx->Extensions.String);
120
121 #if defined(USE_X86_ASM)
122 _mesa_debug(NULL, "Mesa x86-optimized: YES\n");
123 #else
124 _mesa_debug(NULL, "Mesa x86-optimized: NO\n");
125 #endif
126 #if defined(USE_SPARC_ASM)
127 _mesa_debug(NULL, "Mesa sparc-optimized: YES\n");
128 #else
129 _mesa_debug(NULL, "Mesa sparc-optimized: NO\n");
130 #endif
131 }
132
133
134 /**
135 * Set verbose logging flags. When these flags are set, GL API calls
136 * in the various categories will be printed to stderr.
137 * \param str a comma-separated list of keywords
138 */
139 static void
set_verbose_flags(const char * str)140 set_verbose_flags(const char *str)
141 {
142 #ifndef NDEBUG
143 struct option {
144 const char *name;
145 GLbitfield flag;
146 };
147 static const struct option opts[] = {
148 { "varray", VERBOSE_VARRAY },
149 { "tex", VERBOSE_TEXTURE },
150 { "mat", VERBOSE_MATERIAL },
151 { "pipe", VERBOSE_PIPELINE },
152 { "driver", VERBOSE_DRIVER },
153 { "state", VERBOSE_STATE },
154 { "api", VERBOSE_API },
155 { "list", VERBOSE_DISPLAY_LIST },
156 { "lighting", VERBOSE_LIGHTING },
157 { "disassem", VERBOSE_DISASSEM },
158 { "draw", VERBOSE_DRAW },
159 { "swap", VERBOSE_SWAPBUFFERS }
160 };
161 GLuint i;
162
163 if (!str)
164 return;
165
166 MESA_VERBOSE = 0x0;
167 for (i = 0; i < ARRAY_SIZE(opts); i++) {
168 if (strstr(str, opts[i].name) || strcmp(str, "all") == 0)
169 MESA_VERBOSE |= opts[i].flag;
170 }
171 #endif
172 }
173
174
175 /**
176 * Set debugging flags. When these flags are set, Mesa will do additional
177 * debug checks or actions.
178 * \param str a comma-separated list of keywords
179 */
180 static void
set_debug_flags(const char * str)181 set_debug_flags(const char *str)
182 {
183 #ifndef NDEBUG
184 struct option {
185 const char *name;
186 GLbitfield flag;
187 };
188 static const struct option opts[] = {
189 { "silent", DEBUG_SILENT }, /* turn off debug messages */
190 { "flush", DEBUG_ALWAYS_FLUSH }, /* flush after each drawing command */
191 { "incomplete_tex", DEBUG_INCOMPLETE_TEXTURE },
192 { "incomplete_fbo", DEBUG_INCOMPLETE_FBO },
193 { "context", DEBUG_CONTEXT } /* force set GL_CONTEXT_FLAG_DEBUG_BIT flag */
194 };
195 GLuint i;
196
197 if (!str)
198 return;
199
200 MESA_DEBUG_FLAGS = 0x0;
201 for (i = 0; i < ARRAY_SIZE(opts); i++) {
202 if (strstr(str, opts[i].name))
203 MESA_DEBUG_FLAGS |= opts[i].flag;
204 }
205 #endif
206 }
207
208
209 /**
210 * Initialize debugging variables from env vars.
211 */
212 void
_mesa_init_debug(struct gl_context * ctx)213 _mesa_init_debug( struct gl_context *ctx )
214 {
215 set_debug_flags(getenv("MESA_DEBUG"));
216 set_verbose_flags(getenv("MESA_VERBOSE"));
217 }
218
219
220 /*
221 * Write ppm file
222 */
223 static void
write_ppm(const char * filename,const GLubyte * buffer,int width,int height,int comps,int rcomp,int gcomp,int bcomp,GLboolean invert)224 write_ppm(const char *filename, const GLubyte *buffer, int width, int height,
225 int comps, int rcomp, int gcomp, int bcomp, GLboolean invert)
226 {
227 FILE *f = fopen( filename, "w" );
228 if (f) {
229 int x, y;
230 const GLubyte *ptr = buffer;
231 fprintf(f,"P6\n");
232 fprintf(f,"# ppm-file created by osdemo.c\n");
233 fprintf(f,"%i %i\n", width,height);
234 fprintf(f,"255\n");
235 fclose(f);
236 f = fopen( filename, "ab" ); /* reopen in binary append mode */
237 if (!f) {
238 fprintf(stderr, "Error while reopening %s in write_ppm()\n",
239 filename);
240 return;
241 }
242 for (y=0; y < height; y++) {
243 for (x = 0; x < width; x++) {
244 int yy = invert ? (height - 1 - y) : y;
245 int i = (yy * width + x) * comps;
246 fputc(ptr[i+rcomp], f); /* write red */
247 fputc(ptr[i+gcomp], f); /* write green */
248 fputc(ptr[i+bcomp], f); /* write blue */
249 }
250 }
251 fclose(f);
252 }
253 else {
254 fprintf(stderr, "Unable to create %s in write_ppm()\n", filename);
255 }
256 }
257
258
259 /**
260 * Write a texture image to a ppm file.
261 * \param face cube face in [0,5]
262 * \param level mipmap level
263 */
264 static void
write_texture_image(struct gl_texture_object * texObj,GLuint face,GLuint level)265 write_texture_image(struct gl_texture_object *texObj,
266 GLuint face, GLuint level)
267 {
268 struct gl_texture_image *img = texObj->Image[face][level];
269 if (img) {
270 GET_CURRENT_CONTEXT(ctx);
271 struct gl_pixelstore_attrib store;
272 GLubyte *buffer;
273 char s[100];
274
275 buffer = malloc(img->Width * img->Height
276 * img->Depth * 4);
277
278 store = ctx->Pack; /* save */
279 ctx->Pack = ctx->DefaultPacking;
280
281 ctx->Driver.GetTexSubImage(ctx,
282 0, 0, 0, img->Width, img->Height, img->Depth,
283 GL_RGBA, GL_UNSIGNED_BYTE, buffer, img);
284
285 /* make filename */
286 snprintf(s, sizeof(s), "/tmp/tex%u.l%u.f%u.ppm", texObj->Name, level, face);
287
288 printf(" Writing image level %u to %s\n", level, s);
289 write_ppm(s, buffer, img->Width, img->Height, 4, 0, 1, 2, GL_FALSE);
290
291 ctx->Pack = store; /* restore */
292
293 free(buffer);
294 }
295 }
296
297
298 /**
299 * Write renderbuffer image to a ppm file.
300 */
301 void
_mesa_write_renderbuffer_image(const struct gl_renderbuffer * rb)302 _mesa_write_renderbuffer_image(const struct gl_renderbuffer *rb)
303 {
304 GET_CURRENT_CONTEXT(ctx);
305 GLubyte *buffer;
306 char s[100];
307 GLenum format, type;
308
309 if (rb->_BaseFormat == GL_RGB ||
310 rb->_BaseFormat == GL_RGBA) {
311 format = GL_RGBA;
312 type = GL_UNSIGNED_BYTE;
313 }
314 else if (rb->_BaseFormat == GL_DEPTH_STENCIL) {
315 format = GL_DEPTH_STENCIL;
316 type = GL_UNSIGNED_INT_24_8;
317 }
318 else {
319 _mesa_debug(NULL,
320 "Unsupported BaseFormat 0x%x in "
321 "_mesa_write_renderbuffer_image()\n",
322 rb->_BaseFormat);
323 return;
324 }
325
326 buffer = malloc(rb->Width * rb->Height * 4);
327
328 ctx->Driver.ReadPixels(ctx, 0, 0, rb->Width, rb->Height,
329 format, type, &ctx->DefaultPacking, buffer);
330
331 /* make filename */
332 snprintf(s, sizeof(s), "/tmp/renderbuffer%u.ppm", rb->Name);
333 snprintf(s, sizeof(s), "C:\\renderbuffer%u.ppm", rb->Name);
334
335 printf(" Writing renderbuffer image to %s\n", s);
336
337 _mesa_debug(NULL, " Writing renderbuffer image to %s\n", s);
338
339 write_ppm(s, buffer, rb->Width, rb->Height, 4, 0, 1, 2, GL_TRUE);
340
341 free(buffer);
342 }
343
344
345 /** How many texture images (mipmap levels, faces) to write to files */
346 #define WRITE_NONE 0
347 #define WRITE_ONE 1
348 #define WRITE_ALL 2
349
350 static GLuint WriteImages;
351
352
353 static void
dump_texture(struct gl_texture_object * texObj,GLuint writeImages)354 dump_texture(struct gl_texture_object *texObj, GLuint writeImages)
355 {
356 const GLuint numFaces = texObj->Target == GL_TEXTURE_CUBE_MAP ? 6 : 1;
357 GLboolean written = GL_FALSE;
358 GLuint i, j;
359
360 printf("Texture %u\n", texObj->Name);
361 printf(" Target %s\n", tex_target_name(texObj->Target));
362 for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
363 for (j = 0; j < numFaces; j++) {
364 struct gl_texture_image *texImg = texObj->Image[j][i];
365 if (texImg) {
366 printf(" Face %u level %u: %d x %d x %d, format %s\n",
367 j, i,
368 texImg->Width, texImg->Height, texImg->Depth,
369 _mesa_get_format_name(texImg->TexFormat));
370 if (writeImages == WRITE_ALL ||
371 (writeImages == WRITE_ONE && !written)) {
372 write_texture_image(texObj, j, i);
373 written = GL_TRUE;
374 }
375 }
376 }
377 }
378 }
379
380
381 /**
382 * Dump a single texture.
383 */
384 void
_mesa_dump_texture(GLuint texture,GLuint writeImages)385 _mesa_dump_texture(GLuint texture, GLuint writeImages)
386 {
387 GET_CURRENT_CONTEXT(ctx);
388 struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, texture);
389 if (texObj) {
390 dump_texture(texObj, writeImages);
391 }
392 }
393
394
395 static void
dump_texture_cb(void * data,UNUSED void * userData)396 dump_texture_cb(void *data, UNUSED void *userData)
397 {
398 struct gl_texture_object *texObj = (struct gl_texture_object *) data;
399 dump_texture(texObj, WriteImages);
400 }
401
402
403 /**
404 * Print basic info about all texture objext to stdout.
405 * If dumpImages is true, write PPM of level[0] image to a file.
406 */
407 void
_mesa_dump_textures(GLuint writeImages)408 _mesa_dump_textures(GLuint writeImages)
409 {
410 GET_CURRENT_CONTEXT(ctx);
411 WriteImages = writeImages;
412 _mesa_HashWalk(ctx->Shared->TexObjects, dump_texture_cb, ctx);
413 }
414
415
416 static void
dump_renderbuffer(const struct gl_renderbuffer * rb,GLboolean writeImage)417 dump_renderbuffer(const struct gl_renderbuffer *rb, GLboolean writeImage)
418 {
419 printf("Renderbuffer %u: %u x %u IntFormat = %s\n",
420 rb->Name, rb->Width, rb->Height,
421 _mesa_enum_to_string(rb->InternalFormat));
422 if (writeImage) {
423 _mesa_write_renderbuffer_image(rb);
424 }
425 }
426
427
428 static void
dump_renderbuffer_cb(void * data,UNUSED void * userData)429 dump_renderbuffer_cb(void *data, UNUSED void *userData)
430 {
431 const struct gl_renderbuffer *rb = (const struct gl_renderbuffer *) data;
432 dump_renderbuffer(rb, WriteImages);
433 }
434
435
436 /**
437 * Print basic info about all renderbuffers to stdout.
438 * If dumpImages is true, write PPM of level[0] image to a file.
439 */
440 void
_mesa_dump_renderbuffers(GLboolean writeImages)441 _mesa_dump_renderbuffers(GLboolean writeImages)
442 {
443 GET_CURRENT_CONTEXT(ctx);
444 WriteImages = writeImages;
445 _mesa_HashWalk(ctx->Shared->RenderBuffers, dump_renderbuffer_cb, ctx);
446 }
447
448
449
450 void
_mesa_dump_color_buffer(const char * filename)451 _mesa_dump_color_buffer(const char *filename)
452 {
453 GET_CURRENT_CONTEXT(ctx);
454 const GLuint w = ctx->DrawBuffer->Width;
455 const GLuint h = ctx->DrawBuffer->Height;
456 GLubyte *buf;
457
458 buf = malloc(w * h * 4);
459
460 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
461 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
462 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
463
464 _mesa_ReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, buf);
465
466 printf("ReadBuffer %p 0x%x DrawBuffer %p 0x%x\n",
467 (void *) ctx->ReadBuffer->_ColorReadBuffer,
468 ctx->ReadBuffer->ColorReadBuffer,
469 (void *) ctx->DrawBuffer->_ColorDrawBuffers[0],
470 ctx->DrawBuffer->ColorDrawBuffer[0]);
471 printf("Writing %d x %d color buffer to %s\n", w, h, filename);
472 write_ppm(filename, buf, w, h, 4, 0, 1, 2, GL_TRUE);
473
474 _mesa_PopClientAttrib();
475
476 free(buf);
477 }
478
479
480 void
_mesa_dump_depth_buffer(const char * filename)481 _mesa_dump_depth_buffer(const char *filename)
482 {
483 GET_CURRENT_CONTEXT(ctx);
484 const GLuint w = ctx->DrawBuffer->Width;
485 const GLuint h = ctx->DrawBuffer->Height;
486 GLuint *buf;
487 GLubyte *buf2;
488 GLuint i;
489
490 buf = malloc(w * h * 4); /* 4 bpp */
491 buf2 = malloc(w * h * 3); /* 3 bpp */
492
493 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
494 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
495 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
496
497 _mesa_ReadPixels(0, 0, w, h, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, buf);
498
499 /* spread 24 bits of Z across R, G, B */
500 for (i = 0; i < w * h; i++) {
501 buf2[i*3+0] = (buf[i] >> 24) & 0xff;
502 buf2[i*3+1] = (buf[i] >> 16) & 0xff;
503 buf2[i*3+2] = (buf[i] >> 8) & 0xff;
504 }
505
506 printf("Writing %d x %d depth buffer to %s\n", w, h, filename);
507 write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);
508
509 _mesa_PopClientAttrib();
510
511 free(buf);
512 free(buf2);
513 }
514
515
516 void
_mesa_dump_stencil_buffer(const char * filename)517 _mesa_dump_stencil_buffer(const char *filename)
518 {
519 GET_CURRENT_CONTEXT(ctx);
520 const GLuint w = ctx->DrawBuffer->Width;
521 const GLuint h = ctx->DrawBuffer->Height;
522 GLubyte *buf;
523 GLubyte *buf2;
524 GLuint i;
525
526 buf = malloc(w * h); /* 1 bpp */
527 buf2 = malloc(w * h * 3); /* 3 bpp */
528
529 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
530 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
531 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
532
533 _mesa_ReadPixels(0, 0, w, h, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, buf);
534
535 for (i = 0; i < w * h; i++) {
536 buf2[i*3+0] = buf[i];
537 buf2[i*3+1] = (buf[i] & 127) * 2;
538 buf2[i*3+2] = (buf[i] - 128) * 2;
539 }
540
541 printf("Writing %d x %d stencil buffer to %s\n", w, h, filename);
542 write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);
543
544 _mesa_PopClientAttrib();
545
546 free(buf);
547 free(buf2);
548 }
549
550
551 void
_mesa_dump_image(const char * filename,const void * image,GLuint w,GLuint h,GLenum format,GLenum type)552 _mesa_dump_image(const char *filename, const void *image, GLuint w, GLuint h,
553 GLenum format, GLenum type)
554 {
555 GLboolean invert = GL_TRUE;
556
557 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
558 write_ppm(filename, image, w, h, 4, 0, 1, 2, invert);
559 }
560 else if (format == GL_BGRA && type == GL_UNSIGNED_BYTE) {
561 write_ppm(filename, image, w, h, 4, 2, 1, 0, invert);
562 }
563 else if (format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE) {
564 write_ppm(filename, image, w, h, 2, 1, 0, 0, invert);
565 }
566 else if (format == GL_RED && type == GL_UNSIGNED_BYTE) {
567 write_ppm(filename, image, w, h, 1, 0, 0, 0, invert);
568 }
569 else if (format == GL_RGBA && type == GL_FLOAT) {
570 /* convert floats to ubyte */
571 GLubyte *buf = malloc(w * h * 4 * sizeof(GLubyte));
572 const GLfloat *f = (const GLfloat *) image;
573 GLuint i;
574 for (i = 0; i < w * h * 4; i++) {
575 UNCLAMPED_FLOAT_TO_UBYTE(buf[i], f[i]);
576 }
577 write_ppm(filename, buf, w, h, 4, 0, 1, 2, invert);
578 free(buf);
579 }
580 else if (format == GL_RED && type == GL_FLOAT) {
581 /* convert floats to ubyte */
582 GLubyte *buf = malloc(w * h * sizeof(GLubyte));
583 const GLfloat *f = (const GLfloat *) image;
584 GLuint i;
585 for (i = 0; i < w * h; i++) {
586 UNCLAMPED_FLOAT_TO_UBYTE(buf[i], f[i]);
587 }
588 write_ppm(filename, buf, w, h, 1, 0, 0, 0, invert);
589 free(buf);
590 }
591 else {
592 _mesa_problem(NULL,
593 "Unsupported format 0x%x / type 0x%x in _mesa_dump_image()",
594 format, type);
595 }
596 }
597
598
599 /**
600 * Quick and dirty function to "print" a texture to stdout.
601 */
602 void
_mesa_print_texture(struct gl_context * ctx,struct gl_texture_image * img)603 _mesa_print_texture(struct gl_context *ctx, struct gl_texture_image *img)
604 {
605 const GLint slice = 0;
606 GLint srcRowStride;
607 GLuint i, j, c;
608 GLubyte *data;
609
610 ctx->Driver.MapTextureImage(ctx, img, slice,
611 0, 0, img->Width, img->Height, GL_MAP_READ_BIT,
612 &data, &srcRowStride);
613
614 if (!data) {
615 printf("No texture data\n");
616 }
617 else {
618 /* XXX add more formats or make into a new format utility function */
619 switch (img->TexFormat) {
620 case MESA_FORMAT_A_UNORM8:
621 case MESA_FORMAT_L_UNORM8:
622 case MESA_FORMAT_I_UNORM8:
623 c = 1;
624 break;
625 case MESA_FORMAT_LA_UNORM8:
626 c = 2;
627 break;
628 case MESA_FORMAT_BGR_UNORM8:
629 case MESA_FORMAT_RGB_UNORM8:
630 c = 3;
631 break;
632 case MESA_FORMAT_A8B8G8R8_UNORM:
633 case MESA_FORMAT_B8G8R8A8_UNORM:
634 c = 4;
635 break;
636 default:
637 _mesa_problem(NULL, "error in PrintTexture\n");
638 return;
639 }
640
641 for (i = 0; i < img->Height; i++) {
642 for (j = 0; j < img->Width; j++) {
643 if (c==1)
644 printf("%02x ", data[0]);
645 else if (c==2)
646 printf("%02x%02x ", data[0], data[1]);
647 else if (c==3)
648 printf("%02x%02x%02x ", data[0], data[1], data[2]);
649 else if (c==4)
650 printf("%02x%02x%02x%02x ", data[0], data[1], data[2], data[3]);
651 data += (srcRowStride - img->Width) * c;
652 }
653 /* XXX use img->ImageStride here */
654 printf("\n");
655
656 }
657 }
658
659 ctx->Driver.UnmapTextureImage(ctx, img, slice);
660 }
661