1 /*
2 * Mesa 3-D graphics library
3 * Version: 6.5
4 *
5 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include "mtypes.h"
27 #include "attrib.h"
28 #include "colormac.h"
29 #include "enums.h"
30 #include "formats.h"
31 #include "hash.h"
32 #include "imports.h"
33 #include "debug.h"
34 #include "get.h"
35 #include "pixelstore.h"
36 #include "readpix.h"
37 #include "texobj.h"
38
39
40 static const char *
tex_target_name(GLenum tgt)41 tex_target_name(GLenum tgt)
42 {
43 static const struct {
44 GLenum target;
45 const char *name;
46 } tex_targets[] = {
47 { GL_TEXTURE_1D, "GL_TEXTURE_1D" },
48 { GL_TEXTURE_2D, "GL_TEXTURE_2D" },
49 { GL_TEXTURE_3D, "GL_TEXTURE_3D" },
50 { GL_TEXTURE_CUBE_MAP, "GL_TEXTURE_CUBE_MAP" },
51 { GL_TEXTURE_RECTANGLE, "GL_TEXTURE_RECTANGLE" },
52 { GL_TEXTURE_1D_ARRAY_EXT, "GL_TEXTURE_1D_ARRAY" },
53 { GL_TEXTURE_2D_ARRAY_EXT, "GL_TEXTURE_2D_ARRAY" },
54 { GL_TEXTURE_EXTERNAL_OES, "GL_TEXTURE_EXTERNAL_OES" }
55 };
56 GLuint i;
57 for (i = 0; i < Elements(tex_targets); i++) {
58 if (tex_targets[i].target == tgt)
59 return tex_targets[i].name;
60 }
61 return "UNKNOWN TEX TARGET";
62 }
63
64
65 void
_mesa_print_state(const char * msg,GLuint state)66 _mesa_print_state( const char *msg, GLuint state )
67 {
68 _mesa_debug(NULL,
69 "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
70 msg,
71 state,
72 (state & _NEW_MODELVIEW) ? "ctx->ModelView, " : "",
73 (state & _NEW_PROJECTION) ? "ctx->Projection, " : "",
74 (state & _NEW_TEXTURE_MATRIX) ? "ctx->TextureMatrix, " : "",
75 (state & _NEW_COLOR) ? "ctx->Color, " : "",
76 (state & _NEW_DEPTH) ? "ctx->Depth, " : "",
77 (state & _NEW_EVAL) ? "ctx->Eval/EvalMap, " : "",
78 (state & _NEW_FOG) ? "ctx->Fog, " : "",
79 (state & _NEW_HINT) ? "ctx->Hint, " : "",
80 (state & _NEW_LIGHT) ? "ctx->Light, " : "",
81 (state & _NEW_LINE) ? "ctx->Line, " : "",
82 (state & _NEW_PIXEL) ? "ctx->Pixel, " : "",
83 (state & _NEW_POINT) ? "ctx->Point, " : "",
84 (state & _NEW_POLYGON) ? "ctx->Polygon, " : "",
85 (state & _NEW_POLYGONSTIPPLE) ? "ctx->PolygonStipple, " : "",
86 (state & _NEW_SCISSOR) ? "ctx->Scissor, " : "",
87 (state & _NEW_STENCIL) ? "ctx->Stencil, " : "",
88 (state & _NEW_TEXTURE) ? "ctx->Texture, " : "",
89 (state & _NEW_TRANSFORM) ? "ctx->Transform, " : "",
90 (state & _NEW_VIEWPORT) ? "ctx->Viewport, " : "",
91 (state & _NEW_PACKUNPACK) ? "ctx->Pack/Unpack, " : "",
92 (state & _NEW_ARRAY) ? "ctx->Array, " : "",
93 (state & _NEW_RENDERMODE) ? "ctx->RenderMode, " : "",
94 (state & _NEW_BUFFERS) ? "ctx->Visual, ctx->DrawBuffer,, " : "");
95 }
96
97
98
99 void
_mesa_print_tri_caps(const char * name,GLuint flags)100 _mesa_print_tri_caps( const char *name, GLuint flags )
101 {
102 _mesa_debug(NULL,
103 "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s\n",
104 name,
105 flags,
106 (flags & DD_SEPARATE_SPECULAR) ? "separate-specular, " : "",
107 (flags & DD_TRI_LIGHT_TWOSIDE) ? "tri-light-twoside, " : "",
108 (flags & DD_TRI_UNFILLED) ? "tri-unfilled, " : "",
109 (flags & DD_TRI_STIPPLE) ? "tri-stipple, " : "",
110 (flags & DD_TRI_OFFSET) ? "tri-offset, " : "",
111 (flags & DD_TRI_SMOOTH) ? "tri-smooth, " : "",
112 (flags & DD_LINE_SMOOTH) ? "line-smooth, " : "",
113 (flags & DD_LINE_STIPPLE) ? "line-stipple, " : "",
114 (flags & DD_POINT_SMOOTH) ? "point-smooth, " : "",
115 (flags & DD_POINT_ATTEN) ? "point-atten, " : ""
116 );
117 }
118
119
120 /**
121 * Print information about this Mesa version and build options.
122 */
_mesa_print_info(void)123 void _mesa_print_info( void )
124 {
125 _mesa_debug(NULL, "Mesa GL_VERSION = %s\n",
126 (char *) _mesa_GetString(GL_VERSION));
127 _mesa_debug(NULL, "Mesa GL_RENDERER = %s\n",
128 (char *) _mesa_GetString(GL_RENDERER));
129 _mesa_debug(NULL, "Mesa GL_VENDOR = %s\n",
130 (char *) _mesa_GetString(GL_VENDOR));
131 _mesa_debug(NULL, "Mesa GL_EXTENSIONS = %s\n",
132 (char *) _mesa_GetString(GL_EXTENSIONS));
133 #if defined(THREADS)
134 _mesa_debug(NULL, "Mesa thread-safe: YES\n");
135 #else
136 _mesa_debug(NULL, "Mesa thread-safe: NO\n");
137 #endif
138 #if defined(USE_X86_ASM)
139 _mesa_debug(NULL, "Mesa x86-optimized: YES\n");
140 #else
141 _mesa_debug(NULL, "Mesa x86-optimized: NO\n");
142 #endif
143 #if defined(USE_SPARC_ASM)
144 _mesa_debug(NULL, "Mesa sparc-optimized: YES\n");
145 #else
146 _mesa_debug(NULL, "Mesa sparc-optimized: NO\n");
147 #endif
148 }
149
150
151 /**
152 * Set verbose logging flags. When these flags are set, GL API calls
153 * in the various categories will be printed to stderr.
154 * \param str a comma-separated list of keywords
155 */
156 static void
set_verbose_flags(const char * str)157 set_verbose_flags(const char *str)
158 {
159 #ifdef DEBUG
160 struct option {
161 const char *name;
162 GLbitfield flag;
163 };
164 static const struct option opts[] = {
165 { "varray", VERBOSE_VARRAY },
166 { "tex", VERBOSE_TEXTURE },
167 { "mat", VERBOSE_MATERIAL },
168 { "pipe", VERBOSE_PIPELINE },
169 { "driver", VERBOSE_DRIVER },
170 { "state", VERBOSE_STATE },
171 { "api", VERBOSE_API },
172 { "list", VERBOSE_DISPLAY_LIST },
173 { "lighting", VERBOSE_LIGHTING },
174 { "disassem", VERBOSE_DISASSEM },
175 { "draw", VERBOSE_DRAW },
176 { "swap", VERBOSE_SWAPBUFFERS }
177 };
178 GLuint i;
179
180 if (!str)
181 return;
182
183 MESA_VERBOSE = 0x0;
184 for (i = 0; i < Elements(opts); i++) {
185 if (strstr(str, opts[i].name) || strcmp(str, "all") == 0)
186 MESA_VERBOSE |= opts[i].flag;
187 }
188 #endif
189 }
190
191
192 /**
193 * Set debugging flags. When these flags are set, Mesa will do additional
194 * debug checks or actions.
195 * \param str a comma-separated list of keywords
196 */
197 static void
set_debug_flags(const char * str)198 set_debug_flags(const char *str)
199 {
200 #ifdef DEBUG
201 struct option {
202 const char *name;
203 GLbitfield flag;
204 };
205 static const struct option opts[] = {
206 { "silent", DEBUG_SILENT }, /* turn off debug messages */
207 { "flush", DEBUG_ALWAYS_FLUSH }, /* flush after each drawing command */
208 { "incomplete_tex", DEBUG_INCOMPLETE_TEXTURE },
209 { "incomplete_fbo", DEBUG_INCOMPLETE_FBO }
210 };
211 GLuint i;
212
213 if (!str)
214 return;
215
216 MESA_DEBUG_FLAGS = 0x0;
217 for (i = 0; i < Elements(opts); i++) {
218 if (strstr(str, opts[i].name))
219 MESA_DEBUG_FLAGS |= opts[i].flag;
220 }
221 #endif
222 }
223
224
225 /**
226 * Initialize debugging variables from env vars.
227 */
228 void
_mesa_init_debug(struct gl_context * ctx)229 _mesa_init_debug( struct gl_context *ctx )
230 {
231 set_debug_flags(_mesa_getenv("MESA_DEBUG"));
232 set_verbose_flags(_mesa_getenv("MESA_VERBOSE"));
233 }
234
235
236 /*
237 * Write ppm file
238 */
239 static void
write_ppm(const char * filename,const GLubyte * buffer,int width,int height,int comps,int rcomp,int gcomp,int bcomp,GLboolean invert)240 write_ppm(const char *filename, const GLubyte *buffer, int width, int height,
241 int comps, int rcomp, int gcomp, int bcomp, GLboolean invert)
242 {
243 FILE *f = fopen( filename, "w" );
244 if (f) {
245 int x, y;
246 const GLubyte *ptr = buffer;
247 fprintf(f,"P6\n");
248 fprintf(f,"# ppm-file created by osdemo.c\n");
249 fprintf(f,"%i %i\n", width,height);
250 fprintf(f,"255\n");
251 fclose(f);
252 f = fopen( filename, "ab" ); /* reopen in binary append mode */
253 for (y=0; y < height; y++) {
254 for (x = 0; x < width; x++) {
255 int yy = invert ? (height - 1 - y) : y;
256 int i = (yy * width + x) * comps;
257 fputc(ptr[i+rcomp], f); /* write red */
258 fputc(ptr[i+gcomp], f); /* write green */
259 fputc(ptr[i+bcomp], f); /* write blue */
260 }
261 }
262 fclose(f);
263 }
264 else {
265 fprintf(stderr, "Unable to create %s in write_ppm()\n", filename);
266 }
267 }
268
269
270 /**
271 * Write a texture image to a ppm file.
272 * \param face cube face in [0,5]
273 * \param level mipmap level
274 */
275 static void
write_texture_image(struct gl_texture_object * texObj,GLuint face,GLuint level)276 write_texture_image(struct gl_texture_object *texObj,
277 GLuint face, GLuint level)
278 {
279 struct gl_texture_image *img = texObj->Image[face][level];
280 if (img) {
281 GET_CURRENT_CONTEXT(ctx);
282 struct gl_pixelstore_attrib store;
283 GLubyte *buffer;
284 char s[100];
285
286 buffer = (GLubyte *) malloc(img->Width * img->Height
287 * img->Depth * 4);
288
289 store = ctx->Pack; /* save */
290 ctx->Pack = ctx->DefaultPacking;
291
292 ctx->Driver.GetTexImage(ctx, GL_RGBA, GL_UNSIGNED_BYTE, buffer, img);
293
294 /* make filename */
295 _mesa_snprintf(s, sizeof(s), "/tmp/tex%u.l%u.f%u.ppm", texObj->Name, level, face);
296
297 printf(" Writing image level %u to %s\n", level, s);
298 write_ppm(s, buffer, img->Width, img->Height, 4, 0, 1, 2, GL_FALSE);
299
300 ctx->Pack = store; /* restore */
301
302 free(buffer);
303 }
304 }
305
306
307 /**
308 * Write renderbuffer image to a ppm file.
309 */
310 void
_mesa_write_renderbuffer_image(const struct gl_renderbuffer * rb)311 _mesa_write_renderbuffer_image(const struct gl_renderbuffer *rb)
312 {
313 GET_CURRENT_CONTEXT(ctx);
314 GLubyte *buffer;
315 char s[100];
316 GLenum format, type;
317
318 if (rb->_BaseFormat == GL_RGB ||
319 rb->_BaseFormat == GL_RGBA) {
320 format = GL_RGBA;
321 type = GL_UNSIGNED_BYTE;
322 }
323 else if (rb->_BaseFormat == GL_DEPTH_STENCIL) {
324 format = GL_DEPTH_STENCIL;
325 type = GL_UNSIGNED_INT_24_8;
326 }
327 else {
328 _mesa_debug(NULL,
329 "Unsupported BaseFormat 0x%x in "
330 "_mesa_write_renderbuffer_image()\n",
331 rb->_BaseFormat);
332 return;
333 }
334
335 buffer = (GLubyte *) malloc(rb->Width * rb->Height * 4);
336
337 ctx->Driver.ReadPixels(ctx, 0, 0, rb->Width, rb->Height,
338 format, type, &ctx->DefaultPacking, buffer);
339
340 /* make filename */
341 _mesa_snprintf(s, sizeof(s), "/tmp/renderbuffer%u.ppm", rb->Name);
342 _mesa_snprintf(s, sizeof(s), "C:\\renderbuffer%u.ppm", rb->Name);
343
344 printf(" Writing renderbuffer image to %s\n", s);
345
346 _mesa_debug(NULL, " Writing renderbuffer image to %s\n", s);
347
348 write_ppm(s, buffer, rb->Width, rb->Height, 4, 0, 1, 2, GL_TRUE);
349
350 free(buffer);
351 }
352
353
354 /** How many texture images (mipmap levels, faces) to write to files */
355 #define WRITE_NONE 0
356 #define WRITE_ONE 1
357 #define WRITE_ALL 2
358
359 static GLuint WriteImages;
360
361
362 static void
dump_texture(struct gl_texture_object * texObj,GLuint writeImages)363 dump_texture(struct gl_texture_object *texObj, GLuint writeImages)
364 {
365 const GLuint numFaces = texObj->Target == GL_TEXTURE_CUBE_MAP ? 6 : 1;
366 GLboolean written = GL_FALSE;
367 GLuint i, j;
368
369 printf("Texture %u\n", texObj->Name);
370 printf(" Target %s\n", tex_target_name(texObj->Target));
371 for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
372 for (j = 0; j < numFaces; j++) {
373 struct gl_texture_image *texImg = texObj->Image[j][i];
374 if (texImg) {
375 printf(" Face %u level %u: %d x %d x %d, format %s\n",
376 j, i,
377 texImg->Width, texImg->Height, texImg->Depth,
378 _mesa_get_format_name(texImg->TexFormat));
379 if (writeImages == WRITE_ALL ||
380 (writeImages == WRITE_ONE && !written)) {
381 write_texture_image(texObj, j, i);
382 written = GL_TRUE;
383 }
384 }
385 }
386 }
387 }
388
389
390 /**
391 * Dump a single texture.
392 */
393 void
_mesa_dump_texture(GLuint texture,GLuint writeImages)394 _mesa_dump_texture(GLuint texture, GLuint writeImages)
395 {
396 GET_CURRENT_CONTEXT(ctx);
397 struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, texture);
398 if (texObj) {
399 dump_texture(texObj, writeImages);
400 }
401 }
402
403
404 static void
dump_texture_cb(GLuint id,void * data,void * userData)405 dump_texture_cb(GLuint id, void *data, void *userData)
406 {
407 struct gl_texture_object *texObj = (struct gl_texture_object *) data;
408 (void) userData;
409 dump_texture(texObj, WriteImages);
410 }
411
412
413 /**
414 * Print basic info about all texture objext to stdout.
415 * If dumpImages is true, write PPM of level[0] image to a file.
416 */
417 void
_mesa_dump_textures(GLuint writeImages)418 _mesa_dump_textures(GLuint writeImages)
419 {
420 GET_CURRENT_CONTEXT(ctx);
421 WriteImages = writeImages;
422 _mesa_HashWalk(ctx->Shared->TexObjects, dump_texture_cb, ctx);
423 }
424
425
426 static void
dump_renderbuffer(const struct gl_renderbuffer * rb,GLboolean writeImage)427 dump_renderbuffer(const struct gl_renderbuffer *rb, GLboolean writeImage)
428 {
429 printf("Renderbuffer %u: %u x %u IntFormat = %s\n",
430 rb->Name, rb->Width, rb->Height,
431 _mesa_lookup_enum_by_nr(rb->InternalFormat));
432 if (writeImage) {
433 _mesa_write_renderbuffer_image(rb);
434 }
435 }
436
437
438 static void
dump_renderbuffer_cb(GLuint id,void * data,void * userData)439 dump_renderbuffer_cb(GLuint id, void *data, void *userData)
440 {
441 const struct gl_renderbuffer *rb = (const struct gl_renderbuffer *) data;
442 (void) userData;
443 dump_renderbuffer(rb, WriteImages);
444 }
445
446
447 /**
448 * Print basic info about all renderbuffers to stdout.
449 * If dumpImages is true, write PPM of level[0] image to a file.
450 */
451 void
_mesa_dump_renderbuffers(GLboolean writeImages)452 _mesa_dump_renderbuffers(GLboolean writeImages)
453 {
454 GET_CURRENT_CONTEXT(ctx);
455 WriteImages = writeImages;
456 _mesa_HashWalk(ctx->Shared->RenderBuffers, dump_renderbuffer_cb, ctx);
457 }
458
459
460
461 void
_mesa_dump_color_buffer(const char * filename)462 _mesa_dump_color_buffer(const char *filename)
463 {
464 GET_CURRENT_CONTEXT(ctx);
465 const GLuint w = ctx->DrawBuffer->Width;
466 const GLuint h = ctx->DrawBuffer->Height;
467 GLubyte *buf;
468
469 buf = (GLubyte *) malloc(w * h * 4);
470
471 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
472 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
473 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
474
475 _mesa_ReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, buf);
476
477 printf("ReadBuffer %p 0x%x DrawBuffer %p 0x%x\n",
478 (void *) ctx->ReadBuffer->_ColorReadBuffer,
479 ctx->ReadBuffer->ColorReadBuffer,
480 (void *) ctx->DrawBuffer->_ColorDrawBuffers[0],
481 ctx->DrawBuffer->ColorDrawBuffer[0]);
482 printf("Writing %d x %d color buffer to %s\n", w, h, filename);
483 write_ppm(filename, buf, w, h, 4, 0, 1, 2, GL_TRUE);
484
485 _mesa_PopClientAttrib();
486
487 free(buf);
488 }
489
490
491 void
_mesa_dump_depth_buffer(const char * filename)492 _mesa_dump_depth_buffer(const char *filename)
493 {
494 GET_CURRENT_CONTEXT(ctx);
495 const GLuint w = ctx->DrawBuffer->Width;
496 const GLuint h = ctx->DrawBuffer->Height;
497 GLuint *buf;
498 GLubyte *buf2;
499 GLuint i;
500
501 buf = (GLuint *) malloc(w * h * 4); /* 4 bpp */
502 buf2 = (GLubyte *) malloc(w * h * 3); /* 3 bpp */
503
504 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
505 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
506 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
507
508 _mesa_ReadPixels(0, 0, w, h, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, buf);
509
510 /* spread 24 bits of Z across R, G, B */
511 for (i = 0; i < w * h; i++) {
512 buf2[i*3+0] = (buf[i] >> 24) & 0xff;
513 buf2[i*3+1] = (buf[i] >> 16) & 0xff;
514 buf2[i*3+2] = (buf[i] >> 8) & 0xff;
515 }
516
517 printf("Writing %d x %d depth buffer to %s\n", w, h, filename);
518 write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);
519
520 _mesa_PopClientAttrib();
521
522 free(buf);
523 free(buf2);
524 }
525
526
527 void
_mesa_dump_stencil_buffer(const char * filename)528 _mesa_dump_stencil_buffer(const char *filename)
529 {
530 GET_CURRENT_CONTEXT(ctx);
531 const GLuint w = ctx->DrawBuffer->Width;
532 const GLuint h = ctx->DrawBuffer->Height;
533 GLubyte *buf;
534 GLubyte *buf2;
535 GLuint i;
536
537 buf = (GLubyte *) malloc(w * h); /* 1 bpp */
538 buf2 = (GLubyte *) malloc(w * h * 3); /* 3 bpp */
539
540 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
541 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
542 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
543
544 _mesa_ReadPixels(0, 0, w, h, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, buf);
545
546 for (i = 0; i < w * h; i++) {
547 buf2[i*3+0] = buf[i];
548 buf2[i*3+1] = (buf[i] & 127) * 2;
549 buf2[i*3+2] = (buf[i] - 128) * 2;
550 }
551
552 printf("Writing %d x %d stencil buffer to %s\n", w, h, filename);
553 write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);
554
555 _mesa_PopClientAttrib();
556
557 free(buf);
558 free(buf2);
559 }
560
561
562 void
_mesa_dump_image(const char * filename,const void * image,GLuint w,GLuint h,GLenum format,GLenum type)563 _mesa_dump_image(const char *filename, const void *image, GLuint w, GLuint h,
564 GLenum format, GLenum type)
565 {
566 GLboolean invert = GL_TRUE;
567
568 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
569 write_ppm(filename, image, w, h, 4, 0, 1, 2, invert);
570 }
571 else if (format == GL_BGRA && type == GL_UNSIGNED_BYTE) {
572 write_ppm(filename, image, w, h, 4, 2, 1, 0, invert);
573 }
574 else if (format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE) {
575 write_ppm(filename, image, w, h, 2, 1, 0, 0, invert);
576 }
577 else if (format == GL_RED && type == GL_UNSIGNED_BYTE) {
578 write_ppm(filename, image, w, h, 1, 0, 0, 0, invert);
579 }
580 else if (format == GL_RGBA && type == GL_FLOAT) {
581 /* convert floats to ubyte */
582 GLubyte *buf = (GLubyte *) malloc(w * h * 4 * sizeof(GLubyte));
583 const GLfloat *f = (const GLfloat *) image;
584 GLuint i;
585 for (i = 0; i < w * h * 4; i++) {
586 UNCLAMPED_FLOAT_TO_UBYTE(buf[i], f[i]);
587 }
588 write_ppm(filename, buf, w, h, 4, 0, 1, 2, invert);
589 free(buf);
590 }
591 else if (format == GL_RED && type == GL_FLOAT) {
592 /* convert floats to ubyte */
593 GLubyte *buf = (GLubyte *) malloc(w * h * sizeof(GLubyte));
594 const GLfloat *f = (const GLfloat *) image;
595 GLuint i;
596 for (i = 0; i < w * h; i++) {
597 UNCLAMPED_FLOAT_TO_UBYTE(buf[i], f[i]);
598 }
599 write_ppm(filename, buf, w, h, 1, 0, 0, 0, invert);
600 free(buf);
601 }
602 else {
603 _mesa_problem(NULL,
604 "Unsupported format 0x%x / type 0x%x in _mesa_dump_image()",
605 format, type);
606 }
607 }
608
609
610 /**
611 * Quick and dirty function to "print" a texture to stdout.
612 */
613 void
_mesa_print_texture(struct gl_context * ctx,struct gl_texture_image * img)614 _mesa_print_texture(struct gl_context *ctx, struct gl_texture_image *img)
615 {
616 const GLint slice = 0;
617 GLint srcRowStride;
618 GLuint i, j, c;
619 GLubyte *data;
620
621 ctx->Driver.MapTextureImage(ctx, img, slice,
622 0, 0, img->Width, img->Height, GL_MAP_READ_BIT,
623 &data, &srcRowStride);
624
625 if (!data) {
626 printf("No texture data\n");
627 }
628 else {
629 /* XXX add more formats or make into a new format utility function */
630 switch (img->TexFormat) {
631 case MESA_FORMAT_A8:
632 case MESA_FORMAT_L8:
633 case MESA_FORMAT_I8:
634 c = 1;
635 break;
636 case MESA_FORMAT_AL88:
637 case MESA_FORMAT_AL88_REV:
638 c = 2;
639 break;
640 case MESA_FORMAT_RGB888:
641 case MESA_FORMAT_BGR888:
642 c = 3;
643 break;
644 case MESA_FORMAT_RGBA8888:
645 case MESA_FORMAT_ARGB8888:
646 c = 4;
647 break;
648 default:
649 _mesa_problem(NULL, "error in PrintTexture\n");
650 return;
651 }
652
653 for (i = 0; i < img->Height; i++) {
654 for (j = 0; j < img->Width; j++) {
655 if (c==1)
656 printf("%02x ", data[0]);
657 else if (c==2)
658 printf("%02x%02x ", data[0], data[1]);
659 else if (c==3)
660 printf("%02x%02x%02x ", data[0], data[1], data[2]);
661 else if (c==4)
662 printf("%02x%02x%02x%02x ", data[0], data[1], data[2], data[3]);
663 data += (srcRowStride - img->Width) * c;
664 }
665 /* XXX use img->ImageStride here */
666 printf("\n");
667
668 }
669 }
670
671 ctx->Driver.UnmapTextureImage(ctx, img, slice);
672 }
673