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 "mtypes.h"
28 #include "attrib.h"
29 #include "enums.h"
30 #include "formats.h"
31 #include "hash.h"
32 #include "imports.h"
33 #include "macros.h"
34 #include "debug.h"
35 #include "get.h"
36 #include "pixelstore.h"
37 #include "readpix.h"
38 #include "texobj.h"
39
40
41 static const char *
tex_target_name(GLenum tgt)42 tex_target_name(GLenum tgt)
43 {
44 static const struct {
45 GLenum target;
46 const char *name;
47 } tex_targets[] = {
48 { GL_TEXTURE_1D, "GL_TEXTURE_1D" },
49 { GL_TEXTURE_2D, "GL_TEXTURE_2D" },
50 { GL_TEXTURE_3D, "GL_TEXTURE_3D" },
51 { GL_TEXTURE_CUBE_MAP, "GL_TEXTURE_CUBE_MAP" },
52 { GL_TEXTURE_RECTANGLE, "GL_TEXTURE_RECTANGLE" },
53 { GL_TEXTURE_1D_ARRAY_EXT, "GL_TEXTURE_1D_ARRAY" },
54 { GL_TEXTURE_2D_ARRAY_EXT, "GL_TEXTURE_2D_ARRAY" },
55 { GL_TEXTURE_CUBE_MAP_ARRAY, "GL_TEXTURE_CUBE_MAP_ARRAY" },
56 { GL_TEXTURE_BUFFER, "GL_TEXTURE_BUFFER" },
57 { GL_TEXTURE_2D_MULTISAMPLE, "GL_TEXTURE_2D_MULTISAMPLE" },
58 { GL_TEXTURE_2D_MULTISAMPLE_ARRAY, "GL_TEXTURE_2D_MULTISAMPLE_ARRAY" },
59 { GL_TEXTURE_EXTERNAL_OES, "GL_TEXTURE_EXTERNAL_OES" }
60 };
61 GLuint i;
62 STATIC_ASSERT(ARRAY_SIZE(tex_targets) == NUM_TEXTURE_TARGETS);
63 for (i = 0; i < ARRAY_SIZE(tex_targets); i++) {
64 if (tex_targets[i].target == tgt)
65 return tex_targets[i].name;
66 }
67 return "UNKNOWN TEX TARGET";
68 }
69
70
71 void
_mesa_print_state(const char * msg,GLuint state)72 _mesa_print_state( const char *msg, GLuint state )
73 {
74 _mesa_debug(NULL,
75 "%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",
76 msg,
77 state,
78 (state & _NEW_MODELVIEW) ? "ctx->ModelView, " : "",
79 (state & _NEW_PROJECTION) ? "ctx->Projection, " : "",
80 (state & _NEW_TEXTURE_MATRIX) ? "ctx->TextureMatrix, " : "",
81 (state & _NEW_COLOR) ? "ctx->Color, " : "",
82 (state & _NEW_DEPTH) ? "ctx->Depth, " : "",
83 (state & _NEW_EVAL) ? "ctx->Eval/EvalMap, " : "",
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_ARRAY) ? "ctx->Array, " : "",
99 (state & _NEW_RENDERMODE) ? "ctx->RenderMode, " : "",
100 (state & _NEW_BUFFERS) ? "ctx->Visual, ctx->DrawBuffer,, " : "");
101 }
102
103
104
105 /**
106 * Print information about this Mesa version and build options.
107 */
_mesa_print_info(struct gl_context * ctx)108 void _mesa_print_info( struct gl_context *ctx )
109 {
110 _mesa_debug(NULL, "Mesa GL_VERSION = %s\n",
111 (char *) _mesa_GetString(GL_VERSION));
112 _mesa_debug(NULL, "Mesa GL_RENDERER = %s\n",
113 (char *) _mesa_GetString(GL_RENDERER));
114 _mesa_debug(NULL, "Mesa GL_VENDOR = %s\n",
115 (char *) _mesa_GetString(GL_VENDOR));
116
117 /* use ctx as GL_EXTENSIONS will not work on 3.0 or higher
118 * core contexts.
119 */
120 _mesa_debug(NULL, "Mesa GL_EXTENSIONS = %s\n", ctx->Extensions.String);
121
122 #if defined(USE_X86_ASM)
123 _mesa_debug(NULL, "Mesa x86-optimized: YES\n");
124 #else
125 _mesa_debug(NULL, "Mesa x86-optimized: NO\n");
126 #endif
127 #if defined(USE_SPARC_ASM)
128 _mesa_debug(NULL, "Mesa sparc-optimized: YES\n");
129 #else
130 _mesa_debug(NULL, "Mesa sparc-optimized: NO\n");
131 #endif
132 }
133
134
135 /**
136 * Set verbose logging flags. When these flags are set, GL API calls
137 * in the various categories will be printed to stderr.
138 * \param str a comma-separated list of keywords
139 */
140 static void
set_verbose_flags(const char * str)141 set_verbose_flags(const char *str)
142 {
143 #ifdef DEBUG
144 struct option {
145 const char *name;
146 GLbitfield flag;
147 };
148 static const struct option opts[] = {
149 { "varray", VERBOSE_VARRAY },
150 { "tex", VERBOSE_TEXTURE },
151 { "mat", VERBOSE_MATERIAL },
152 { "pipe", VERBOSE_PIPELINE },
153 { "driver", VERBOSE_DRIVER },
154 { "state", VERBOSE_STATE },
155 { "api", VERBOSE_API },
156 { "list", VERBOSE_DISPLAY_LIST },
157 { "lighting", VERBOSE_LIGHTING },
158 { "disassem", VERBOSE_DISASSEM },
159 { "draw", VERBOSE_DRAW },
160 { "swap", VERBOSE_SWAPBUFFERS }
161 };
162 GLuint i;
163
164 if (!str)
165 return;
166
167 MESA_VERBOSE = 0x0;
168 for (i = 0; i < ARRAY_SIZE(opts); i++) {
169 if (strstr(str, opts[i].name) || strcmp(str, "all") == 0)
170 MESA_VERBOSE |= opts[i].flag;
171 }
172 #endif
173 }
174
175
176 /**
177 * Set debugging flags. When these flags are set, Mesa will do additional
178 * debug checks or actions.
179 * \param str a comma-separated list of keywords
180 */
181 static void
set_debug_flags(const char * str)182 set_debug_flags(const char *str)
183 {
184 #ifdef DEBUG
185 struct option {
186 const char *name;
187 GLbitfield flag;
188 };
189 static const struct option opts[] = {
190 { "silent", DEBUG_SILENT }, /* turn off debug messages */
191 { "flush", DEBUG_ALWAYS_FLUSH }, /* flush after each drawing command */
192 { "incomplete_tex", DEBUG_INCOMPLETE_TEXTURE },
193 { "incomplete_fbo", DEBUG_INCOMPLETE_FBO },
194 { "context", DEBUG_CONTEXT } /* force set GL_CONTEXT_FLAG_DEBUG_BIT flag */
195 };
196 GLuint i;
197
198 if (!str)
199 return;
200
201 MESA_DEBUG_FLAGS = 0x0;
202 for (i = 0; i < ARRAY_SIZE(opts); i++) {
203 if (strstr(str, opts[i].name))
204 MESA_DEBUG_FLAGS |= opts[i].flag;
205 }
206 #endif
207 }
208
209
210 /**
211 * Initialize debugging variables from env vars.
212 */
213 void
_mesa_init_debug(struct gl_context * ctx)214 _mesa_init_debug( struct gl_context *ctx )
215 {
216 set_debug_flags(getenv("MESA_DEBUG"));
217 set_verbose_flags(getenv("MESA_VERBOSE"));
218 }
219
220
221 /*
222 * Write ppm file
223 */
224 static void
write_ppm(const char * filename,const GLubyte * buffer,int width,int height,int comps,int rcomp,int gcomp,int bcomp,GLboolean invert)225 write_ppm(const char *filename, const GLubyte *buffer, int width, int height,
226 int comps, int rcomp, int gcomp, int bcomp, GLboolean invert)
227 {
228 FILE *f = fopen( filename, "w" );
229 if (f) {
230 int x, y;
231 const GLubyte *ptr = buffer;
232 fprintf(f,"P6\n");
233 fprintf(f,"# ppm-file created by osdemo.c\n");
234 fprintf(f,"%i %i\n", width,height);
235 fprintf(f,"255\n");
236 fclose(f);
237 f = fopen( filename, "ab" ); /* reopen in binary append mode */
238 if (!f) {
239 fprintf(stderr, "Error while reopening %s in write_ppm()\n",
240 filename);
241 return;
242 }
243 for (y=0; y < height; y++) {
244 for (x = 0; x < width; x++) {
245 int yy = invert ? (height - 1 - y) : y;
246 int i = (yy * width + x) * comps;
247 fputc(ptr[i+rcomp], f); /* write red */
248 fputc(ptr[i+gcomp], f); /* write green */
249 fputc(ptr[i+bcomp], f); /* write blue */
250 }
251 }
252 fclose(f);
253 }
254 else {
255 fprintf(stderr, "Unable to create %s in write_ppm()\n", filename);
256 }
257 }
258
259
260 /**
261 * Write a texture image to a ppm file.
262 * \param face cube face in [0,5]
263 * \param level mipmap level
264 */
265 static void
write_texture_image(struct gl_texture_object * texObj,GLuint face,GLuint level)266 write_texture_image(struct gl_texture_object *texObj,
267 GLuint face, GLuint level)
268 {
269 struct gl_texture_image *img = texObj->Image[face][level];
270 if (img) {
271 GET_CURRENT_CONTEXT(ctx);
272 struct gl_pixelstore_attrib store;
273 GLubyte *buffer;
274 char s[100];
275
276 buffer = malloc(img->Width * img->Height
277 * img->Depth * 4);
278
279 store = ctx->Pack; /* save */
280 ctx->Pack = ctx->DefaultPacking;
281
282 ctx->Driver.GetTexSubImage(ctx,
283 0, 0, 0, img->Width, img->Height, img->Depth,
284 GL_RGBA, GL_UNSIGNED_BYTE, buffer, img);
285
286 /* make filename */
287 _mesa_snprintf(s, sizeof(s), "/tmp/tex%u.l%u.f%u.ppm", texObj->Name, level, face);
288
289 printf(" Writing image level %u to %s\n", level, s);
290 write_ppm(s, buffer, img->Width, img->Height, 4, 0, 1, 2, GL_FALSE);
291
292 ctx->Pack = store; /* restore */
293
294 free(buffer);
295 }
296 }
297
298
299 /**
300 * Write renderbuffer image to a ppm file.
301 */
302 void
_mesa_write_renderbuffer_image(const struct gl_renderbuffer * rb)303 _mesa_write_renderbuffer_image(const struct gl_renderbuffer *rb)
304 {
305 GET_CURRENT_CONTEXT(ctx);
306 GLubyte *buffer;
307 char s[100];
308 GLenum format, type;
309
310 if (rb->_BaseFormat == GL_RGB ||
311 rb->_BaseFormat == GL_RGBA) {
312 format = GL_RGBA;
313 type = GL_UNSIGNED_BYTE;
314 }
315 else if (rb->_BaseFormat == GL_DEPTH_STENCIL) {
316 format = GL_DEPTH_STENCIL;
317 type = GL_UNSIGNED_INT_24_8;
318 }
319 else {
320 _mesa_debug(NULL,
321 "Unsupported BaseFormat 0x%x in "
322 "_mesa_write_renderbuffer_image()\n",
323 rb->_BaseFormat);
324 return;
325 }
326
327 buffer = malloc(rb->Width * rb->Height * 4);
328
329 ctx->Driver.ReadPixels(ctx, 0, 0, rb->Width, rb->Height,
330 format, type, &ctx->DefaultPacking, buffer);
331
332 /* make filename */
333 _mesa_snprintf(s, sizeof(s), "/tmp/renderbuffer%u.ppm", rb->Name);
334 _mesa_snprintf(s, sizeof(s), "C:\\renderbuffer%u.ppm", rb->Name);
335
336 printf(" Writing renderbuffer image to %s\n", s);
337
338 _mesa_debug(NULL, " Writing renderbuffer image to %s\n", s);
339
340 write_ppm(s, buffer, rb->Width, rb->Height, 4, 0, 1, 2, GL_TRUE);
341
342 free(buffer);
343 }
344
345
346 /** How many texture images (mipmap levels, faces) to write to files */
347 #define WRITE_NONE 0
348 #define WRITE_ONE 1
349 #define WRITE_ALL 2
350
351 static GLuint WriteImages;
352
353
354 static void
dump_texture(struct gl_texture_object * texObj,GLuint writeImages)355 dump_texture(struct gl_texture_object *texObj, GLuint writeImages)
356 {
357 const GLuint numFaces = texObj->Target == GL_TEXTURE_CUBE_MAP ? 6 : 1;
358 GLboolean written = GL_FALSE;
359 GLuint i, j;
360
361 printf("Texture %u\n", texObj->Name);
362 printf(" Target %s\n", tex_target_name(texObj->Target));
363 for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
364 for (j = 0; j < numFaces; j++) {
365 struct gl_texture_image *texImg = texObj->Image[j][i];
366 if (texImg) {
367 printf(" Face %u level %u: %d x %d x %d, format %s\n",
368 j, i,
369 texImg->Width, texImg->Height, texImg->Depth,
370 _mesa_get_format_name(texImg->TexFormat));
371 if (writeImages == WRITE_ALL ||
372 (writeImages == WRITE_ONE && !written)) {
373 write_texture_image(texObj, j, i);
374 written = GL_TRUE;
375 }
376 }
377 }
378 }
379 }
380
381
382 /**
383 * Dump a single texture.
384 */
385 void
_mesa_dump_texture(GLuint texture,GLuint writeImages)386 _mesa_dump_texture(GLuint texture, GLuint writeImages)
387 {
388 GET_CURRENT_CONTEXT(ctx);
389 struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, texture);
390 if (texObj) {
391 dump_texture(texObj, writeImages);
392 }
393 }
394
395
396 static void
dump_texture_cb(GLuint id,void * data,void * userData)397 dump_texture_cb(GLuint id, void *data, void *userData)
398 {
399 struct gl_texture_object *texObj = (struct gl_texture_object *) data;
400 (void) userData;
401 dump_texture(texObj, WriteImages);
402 }
403
404
405 /**
406 * Print basic info about all texture objext to stdout.
407 * If dumpImages is true, write PPM of level[0] image to a file.
408 */
409 void
_mesa_dump_textures(GLuint writeImages)410 _mesa_dump_textures(GLuint writeImages)
411 {
412 GET_CURRENT_CONTEXT(ctx);
413 WriteImages = writeImages;
414 _mesa_HashWalk(ctx->Shared->TexObjects, dump_texture_cb, ctx);
415 }
416
417
418 static void
dump_renderbuffer(const struct gl_renderbuffer * rb,GLboolean writeImage)419 dump_renderbuffer(const struct gl_renderbuffer *rb, GLboolean writeImage)
420 {
421 printf("Renderbuffer %u: %u x %u IntFormat = %s\n",
422 rb->Name, rb->Width, rb->Height,
423 _mesa_enum_to_string(rb->InternalFormat));
424 if (writeImage) {
425 _mesa_write_renderbuffer_image(rb);
426 }
427 }
428
429
430 static void
dump_renderbuffer_cb(GLuint id,void * data,void * userData)431 dump_renderbuffer_cb(GLuint id, void *data, void *userData)
432 {
433 const struct gl_renderbuffer *rb = (const struct gl_renderbuffer *) data;
434 (void) userData;
435 dump_renderbuffer(rb, WriteImages);
436 }
437
438
439 /**
440 * Print basic info about all renderbuffers to stdout.
441 * If dumpImages is true, write PPM of level[0] image to a file.
442 */
443 void
_mesa_dump_renderbuffers(GLboolean writeImages)444 _mesa_dump_renderbuffers(GLboolean writeImages)
445 {
446 GET_CURRENT_CONTEXT(ctx);
447 WriteImages = writeImages;
448 _mesa_HashWalk(ctx->Shared->RenderBuffers, dump_renderbuffer_cb, ctx);
449 }
450
451
452
453 void
_mesa_dump_color_buffer(const char * filename)454 _mesa_dump_color_buffer(const char *filename)
455 {
456 GET_CURRENT_CONTEXT(ctx);
457 const GLuint w = ctx->DrawBuffer->Width;
458 const GLuint h = ctx->DrawBuffer->Height;
459 GLubyte *buf;
460
461 buf = malloc(w * h * 4);
462
463 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
464 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
465 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
466
467 _mesa_ReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, buf);
468
469 printf("ReadBuffer %p 0x%x DrawBuffer %p 0x%x\n",
470 (void *) ctx->ReadBuffer->_ColorReadBuffer,
471 ctx->ReadBuffer->ColorReadBuffer,
472 (void *) ctx->DrawBuffer->_ColorDrawBuffers[0],
473 ctx->DrawBuffer->ColorDrawBuffer[0]);
474 printf("Writing %d x %d color buffer to %s\n", w, h, filename);
475 write_ppm(filename, buf, w, h, 4, 0, 1, 2, GL_TRUE);
476
477 _mesa_PopClientAttrib();
478
479 free(buf);
480 }
481
482
483 void
_mesa_dump_depth_buffer(const char * filename)484 _mesa_dump_depth_buffer(const char *filename)
485 {
486 GET_CURRENT_CONTEXT(ctx);
487 const GLuint w = ctx->DrawBuffer->Width;
488 const GLuint h = ctx->DrawBuffer->Height;
489 GLuint *buf;
490 GLubyte *buf2;
491 GLuint i;
492
493 buf = malloc(w * h * 4); /* 4 bpp */
494 buf2 = malloc(w * h * 3); /* 3 bpp */
495
496 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
497 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
498 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
499
500 _mesa_ReadPixels(0, 0, w, h, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, buf);
501
502 /* spread 24 bits of Z across R, G, B */
503 for (i = 0; i < w * h; i++) {
504 buf2[i*3+0] = (buf[i] >> 24) & 0xff;
505 buf2[i*3+1] = (buf[i] >> 16) & 0xff;
506 buf2[i*3+2] = (buf[i] >> 8) & 0xff;
507 }
508
509 printf("Writing %d x %d depth buffer to %s\n", w, h, filename);
510 write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);
511
512 _mesa_PopClientAttrib();
513
514 free(buf);
515 free(buf2);
516 }
517
518
519 void
_mesa_dump_stencil_buffer(const char * filename)520 _mesa_dump_stencil_buffer(const char *filename)
521 {
522 GET_CURRENT_CONTEXT(ctx);
523 const GLuint w = ctx->DrawBuffer->Width;
524 const GLuint h = ctx->DrawBuffer->Height;
525 GLubyte *buf;
526 GLubyte *buf2;
527 GLuint i;
528
529 buf = malloc(w * h); /* 1 bpp */
530 buf2 = malloc(w * h * 3); /* 3 bpp */
531
532 _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
533 _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
534 _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
535
536 _mesa_ReadPixels(0, 0, w, h, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, buf);
537
538 for (i = 0; i < w * h; i++) {
539 buf2[i*3+0] = buf[i];
540 buf2[i*3+1] = (buf[i] & 127) * 2;
541 buf2[i*3+2] = (buf[i] - 128) * 2;
542 }
543
544 printf("Writing %d x %d stencil buffer to %s\n", w, h, filename);
545 write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);
546
547 _mesa_PopClientAttrib();
548
549 free(buf);
550 free(buf2);
551 }
552
553
554 void
_mesa_dump_image(const char * filename,const void * image,GLuint w,GLuint h,GLenum format,GLenum type)555 _mesa_dump_image(const char *filename, const void *image, GLuint w, GLuint h,
556 GLenum format, GLenum type)
557 {
558 GLboolean invert = GL_TRUE;
559
560 if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
561 write_ppm(filename, image, w, h, 4, 0, 1, 2, invert);
562 }
563 else if (format == GL_BGRA && type == GL_UNSIGNED_BYTE) {
564 write_ppm(filename, image, w, h, 4, 2, 1, 0, invert);
565 }
566 else if (format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE) {
567 write_ppm(filename, image, w, h, 2, 1, 0, 0, invert);
568 }
569 else if (format == GL_RED && type == GL_UNSIGNED_BYTE) {
570 write_ppm(filename, image, w, h, 1, 0, 0, 0, invert);
571 }
572 else if (format == GL_RGBA && type == GL_FLOAT) {
573 /* convert floats to ubyte */
574 GLubyte *buf = malloc(w * h * 4 * sizeof(GLubyte));
575 const GLfloat *f = (const GLfloat *) image;
576 GLuint i;
577 for (i = 0; i < w * h * 4; i++) {
578 UNCLAMPED_FLOAT_TO_UBYTE(buf[i], f[i]);
579 }
580 write_ppm(filename, buf, w, h, 4, 0, 1, 2, invert);
581 free(buf);
582 }
583 else if (format == GL_RED && type == GL_FLOAT) {
584 /* convert floats to ubyte */
585 GLubyte *buf = malloc(w * h * sizeof(GLubyte));
586 const GLfloat *f = (const GLfloat *) image;
587 GLuint i;
588 for (i = 0; i < w * h; i++) {
589 UNCLAMPED_FLOAT_TO_UBYTE(buf[i], f[i]);
590 }
591 write_ppm(filename, buf, w, h, 1, 0, 0, 0, invert);
592 free(buf);
593 }
594 else {
595 _mesa_problem(NULL,
596 "Unsupported format 0x%x / type 0x%x in _mesa_dump_image()",
597 format, type);
598 }
599 }
600
601
602 /**
603 * Quick and dirty function to "print" a texture to stdout.
604 */
605 void
_mesa_print_texture(struct gl_context * ctx,struct gl_texture_image * img)606 _mesa_print_texture(struct gl_context *ctx, struct gl_texture_image *img)
607 {
608 const GLint slice = 0;
609 GLint srcRowStride;
610 GLuint i, j, c;
611 GLubyte *data;
612
613 ctx->Driver.MapTextureImage(ctx, img, slice,
614 0, 0, img->Width, img->Height, GL_MAP_READ_BIT,
615 &data, &srcRowStride);
616
617 if (!data) {
618 printf("No texture data\n");
619 }
620 else {
621 /* XXX add more formats or make into a new format utility function */
622 switch (img->TexFormat) {
623 case MESA_FORMAT_A_UNORM8:
624 case MESA_FORMAT_L_UNORM8:
625 case MESA_FORMAT_I_UNORM8:
626 c = 1;
627 break;
628 case MESA_FORMAT_L8A8_UNORM:
629 case MESA_FORMAT_A8L8_UNORM:
630 c = 2;
631 break;
632 case MESA_FORMAT_BGR_UNORM8:
633 case MESA_FORMAT_RGB_UNORM8:
634 c = 3;
635 break;
636 case MESA_FORMAT_A8B8G8R8_UNORM:
637 case MESA_FORMAT_B8G8R8A8_UNORM:
638 c = 4;
639 break;
640 default:
641 _mesa_problem(NULL, "error in PrintTexture\n");
642 return;
643 }
644
645 for (i = 0; i < img->Height; i++) {
646 for (j = 0; j < img->Width; j++) {
647 if (c==1)
648 printf("%02x ", data[0]);
649 else if (c==2)
650 printf("%02x%02x ", data[0], data[1]);
651 else if (c==3)
652 printf("%02x%02x%02x ", data[0], data[1], data[2]);
653 else if (c==4)
654 printf("%02x%02x%02x%02x ", data[0], data[1], data[2], data[3]);
655 data += (srcRowStride - img->Width) * c;
656 }
657 /* XXX use img->ImageStride here */
658 printf("\n");
659
660 }
661 }
662
663 ctx->Driver.UnmapTextureImage(ctx, img, slice);
664 }
665