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st/mesa: silence uninitialized var warnings
[mesa.git] / src / mesa / state_tracker / st_cb_texture.c
1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * 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
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #include "main/mfeatures.h"
29 #include "main/bufferobj.h"
30 #if FEATURE_convolve
31 #include "main/convolve.h"
32 #endif
33 #include "main/enums.h"
34 #include "main/image.h"
35 #include "main/imports.h"
36 #include "main/macros.h"
37 #include "main/mipmap.h"
38 #include "main/pixel.h"
39 #include "main/texcompress.h"
40 #include "main/texformat.h"
41 #include "main/texgetimage.h"
42 #include "main/teximage.h"
43 #include "main/texobj.h"
44 #include "main/texstore.h"
45
46 #include "state_tracker/st_context.h"
47 #include "state_tracker/st_cb_fbo.h"
48 #include "state_tracker/st_cb_texture.h"
49 #include "state_tracker/st_format.h"
50 #include "state_tracker/st_public.h"
51 #include "state_tracker/st_texture.h"
52 #include "state_tracker/st_gen_mipmap.h"
53 #include "state_tracker/st_inlines.h"
54 #include "state_tracker/st_atom.h"
55
56 #include "pipe/p_context.h"
57 #include "pipe/p_defines.h"
58 #include "pipe/p_inlines.h"
59 #include "pipe/p_shader_tokens.h"
60 #include "util/u_tile.h"
61 #include "util/u_blit.h"
62 #include "util/u_surface.h"
63
64
65 #define DBG if (0) printf
66
67
68 static enum pipe_texture_target
69 gl_target_to_pipe(GLenum target)
70 {
71 switch (target) {
72 case GL_TEXTURE_1D:
73 return PIPE_TEXTURE_1D;
74
75 case GL_TEXTURE_2D:
76 case GL_TEXTURE_RECTANGLE_NV:
77 return PIPE_TEXTURE_2D;
78
79 case GL_TEXTURE_3D:
80 return PIPE_TEXTURE_3D;
81
82 case GL_TEXTURE_CUBE_MAP_ARB:
83 return PIPE_TEXTURE_CUBE;
84
85 default:
86 assert(0);
87 return 0;
88 }
89 }
90
91
92 /**
93 * Return nominal bytes per texel for a compressed format, 0 for non-compressed
94 * format.
95 */
96 static GLuint
97 compressed_num_bytes(GLuint mesaFormat)
98 {
99 switch(mesaFormat) {
100 #if FEATURE_texture_fxt1
101 case MESA_FORMAT_RGB_FXT1:
102 case MESA_FORMAT_RGBA_FXT1:
103 #endif
104 #if FEATURE_texture_s3tc
105 case MESA_FORMAT_RGB_DXT1:
106 case MESA_FORMAT_RGBA_DXT1:
107 return 2;
108 case MESA_FORMAT_RGBA_DXT3:
109 case MESA_FORMAT_RGBA_DXT5:
110 return 4;
111 #endif
112 default:
113 return 0;
114 }
115 }
116
117
118 static GLboolean
119 is_compressed_mesa_format(const struct gl_texture_format *format)
120 {
121 switch (format->MesaFormat) {
122 case MESA_FORMAT_RGB_DXT1:
123 case MESA_FORMAT_RGBA_DXT1:
124 case MESA_FORMAT_RGBA_DXT3:
125 case MESA_FORMAT_RGBA_DXT5:
126 case MESA_FORMAT_SRGB_DXT1:
127 case MESA_FORMAT_SRGBA_DXT1:
128 case MESA_FORMAT_SRGBA_DXT3:
129 case MESA_FORMAT_SRGBA_DXT5:
130 return GL_TRUE;
131 default:
132 return GL_FALSE;
133 }
134 }
135
136
137 /** called via ctx->Driver.NewTextureImage() */
138 static struct gl_texture_image *
139 st_NewTextureImage(GLcontext * ctx)
140 {
141 DBG("%s\n", __FUNCTION__);
142 (void) ctx;
143 return (struct gl_texture_image *) ST_CALLOC_STRUCT(st_texture_image);
144 }
145
146
147 /** called via ctx->Driver.NewTextureObject() */
148 static struct gl_texture_object *
149 st_NewTextureObject(GLcontext * ctx, GLuint name, GLenum target)
150 {
151 struct st_texture_object *obj = ST_CALLOC_STRUCT(st_texture_object);
152
153 DBG("%s\n", __FUNCTION__);
154 _mesa_initialize_texture_object(&obj->base, name, target);
155
156 return &obj->base;
157 }
158
159 /** called via ctx->Driver.DeleteTextureImage() */
160 static void
161 st_DeleteTextureObject(GLcontext *ctx,
162 struct gl_texture_object *texObj)
163 {
164 struct st_texture_object *stObj = st_texture_object(texObj);
165 if (stObj->pt)
166 pipe_texture_reference(&stObj->pt, NULL);
167
168 _mesa_delete_texture_object(ctx, texObj);
169 }
170
171
172 /** called via ctx->Driver.FreeTexImageData() */
173 static void
174 st_FreeTextureImageData(GLcontext * ctx, struct gl_texture_image *texImage)
175 {
176 struct st_texture_image *stImage = st_texture_image(texImage);
177
178 DBG("%s\n", __FUNCTION__);
179
180 if (stImage->pt) {
181 pipe_texture_reference(&stImage->pt, NULL);
182 }
183
184 if (texImage->Data) {
185 _mesa_align_free(texImage->Data);
186 texImage->Data = NULL;
187 }
188 }
189
190
191 /**
192 * From linux kernel i386 header files, copes with odd sizes better
193 * than COPY_DWORDS would:
194 * XXX Put this in src/mesa/main/imports.h ???
195 */
196 #if defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86)
197 static INLINE void *
198 __memcpy(void *to, const void *from, size_t n)
199 {
200 int d0, d1, d2;
201 __asm__ __volatile__("rep ; movsl\n\t"
202 "testb $2,%b4\n\t"
203 "je 1f\n\t"
204 "movsw\n"
205 "1:\ttestb $1,%b4\n\t"
206 "je 2f\n\t"
207 "movsb\n" "2:":"=&c"(d0), "=&D"(d1), "=&S"(d2)
208 :"0"(n / 4), "q"(n), "1"((long) to), "2"((long) from)
209 :"memory");
210 return (to);
211 }
212 #else
213 #define __memcpy(a,b,c) memcpy(a,b,c)
214 #endif
215
216
217 /**
218 * The system memcpy (at least on ubuntu 5.10) has problems copying
219 * to agp (writecombined) memory from a source which isn't 64-byte
220 * aligned - there is a 4x performance falloff.
221 *
222 * The x86 __memcpy is immune to this but is slightly slower
223 * (10%-ish) than the system memcpy.
224 *
225 * The sse_memcpy seems to have a slight cliff at 64/32 bytes, but
226 * isn't much faster than x86_memcpy for agp copies.
227 *
228 * TODO: switch dynamically.
229 */
230 static void *
231 do_memcpy(void *dest, const void *src, size_t n)
232 {
233 if ((((unsigned long) src) & 63) || (((unsigned long) dest) & 63)) {
234 return __memcpy(dest, src, n);
235 }
236 else
237 return memcpy(dest, src, n);
238 }
239
240
241 static INLINE unsigned
242 logbase2(unsigned n)
243 {
244 unsigned log2 = 0;
245 while (n >>= 1)
246 ++log2;
247 return log2;
248 }
249
250
251 /**
252 * Return default texture usage bitmask for the given texture format.
253 */
254 static GLuint
255 default_usage(enum pipe_format fmt)
256 {
257 GLuint usage = PIPE_TEXTURE_USAGE_SAMPLER;
258 if (pf_is_depth_stencil(fmt))
259 usage |= PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
260 else
261 usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
262 return usage;
263 }
264
265
266 /**
267 * Allocate a pipe_texture object for the given st_texture_object using
268 * the given st_texture_image to guess the mipmap size/levels.
269 *
270 * [comments...]
271 * Otherwise, store it in memory if (Border != 0) or (any dimension ==
272 * 1).
273 *
274 * Otherwise, if max_level >= level >= min_level, create texture with
275 * space for images from min_level down to max_level.
276 *
277 * Otherwise, create texture with space for images from (level 0)..(1x1).
278 * Consider pruning this texture at a validation if the saving is worth it.
279 */
280 static void
281 guess_and_alloc_texture(struct st_context *st,
282 struct st_texture_object *stObj,
283 const struct st_texture_image *stImage)
284 {
285 GLuint firstLevel;
286 GLuint lastLevel;
287 GLuint width = stImage->base.Width2; /* size w/out border */
288 GLuint height = stImage->base.Height2;
289 GLuint depth = stImage->base.Depth2;
290 GLuint i, usage;
291 enum pipe_format fmt;
292
293 DBG("%s\n", __FUNCTION__);
294
295 assert(!stObj->pt);
296
297 if (stObj->pt &&
298 (GLint) stImage->level > stObj->base.BaseLevel &&
299 (stImage->base.Width == 1 ||
300 (stObj->base.Target != GL_TEXTURE_1D &&
301 stImage->base.Height == 1) ||
302 (stObj->base.Target == GL_TEXTURE_3D &&
303 stImage->base.Depth == 1)))
304 return;
305
306 /* If this image disrespects BaseLevel, allocate from level zero.
307 * Usually BaseLevel == 0, so it's unlikely to happen.
308 */
309 if ((GLint) stImage->level < stObj->base.BaseLevel)
310 firstLevel = 0;
311 else
312 firstLevel = stObj->base.BaseLevel;
313
314
315 /* Figure out image dimensions at start level.
316 */
317 for (i = stImage->level; i > firstLevel; i--) {
318 if (width != 1)
319 width <<= 1;
320 if (height != 1)
321 height <<= 1;
322 if (depth != 1)
323 depth <<= 1;
324 }
325
326 if (width == 0 || height == 0 || depth == 0) {
327 /* no texture needed */
328 return;
329 }
330
331 /* Guess a reasonable value for lastLevel. This is probably going
332 * to be wrong fairly often and might mean that we have to look at
333 * resizable buffers, or require that buffers implement lazy
334 * pagetable arrangements.
335 */
336 if ((stObj->base.MinFilter == GL_NEAREST ||
337 stObj->base.MinFilter == GL_LINEAR ||
338 stImage->base._BaseFormat == GL_DEPTH_COMPONENT ||
339 stImage->base._BaseFormat == GL_DEPTH_STENCIL_EXT) &&
340 stImage->level == firstLevel) {
341 lastLevel = firstLevel;
342 }
343 else {
344 GLuint l2width = logbase2(width);
345 GLuint l2height = logbase2(height);
346 GLuint l2depth = logbase2(depth);
347 lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
348 }
349
350 fmt = st_mesa_format_to_pipe_format(stImage->base.TexFormat->MesaFormat);
351
352 usage = default_usage(fmt);
353
354 stObj->pt = st_texture_create(st,
355 gl_target_to_pipe(stObj->base.Target),
356 fmt,
357 lastLevel,
358 width,
359 height,
360 depth,
361 usage);
362
363 DBG("%s - success\n", __FUNCTION__);
364 }
365
366
367 /**
368 * Adjust pixel unpack params and image dimensions to strip off the
369 * texture border.
370 * Gallium doesn't support texture borders. They've seldem been used
371 * and seldom been implemented correctly anyway.
372 * \param unpackNew returns the new pixel unpack parameters
373 */
374 static void
375 strip_texture_border(GLint border,
376 GLint *width, GLint *height, GLint *depth,
377 const struct gl_pixelstore_attrib *unpack,
378 struct gl_pixelstore_attrib *unpackNew)
379 {
380 assert(border > 0); /* sanity check */
381
382 *unpackNew = *unpack;
383
384 if (unpackNew->RowLength == 0)
385 unpackNew->RowLength = *width;
386
387 if (depth && unpackNew->ImageHeight == 0)
388 unpackNew->ImageHeight = *height;
389
390 unpackNew->SkipPixels += border;
391 if (height)
392 unpackNew->SkipRows += border;
393 if (depth)
394 unpackNew->SkipImages += border;
395
396 assert(*width >= 3);
397 *width = *width - 2 * border;
398 if (height && *height >= 3)
399 *height = *height - 2 * border;
400 if (depth && *depth >= 3)
401 *depth = *depth - 2 * border;
402 }
403
404
405 /**
406 * Try to do texture compression via rendering. If the Gallium driver
407 * can render into a compressed surface this will allow us to do texture
408 * compression.
409 * \return GL_TRUE for success, GL_FALSE for failure
410 */
411 static GLboolean
412 compress_with_blit(GLcontext * ctx,
413 GLenum target, GLint level,
414 GLint xoffset, GLint yoffset, GLint zoffset,
415 GLint width, GLint height, GLint depth,
416 GLenum format, GLenum type, const void *pixels,
417 const struct gl_pixelstore_attrib *unpack,
418 struct gl_texture_image *texImage)
419 {
420 const GLuint dstImageOffsets[1] = {0};
421 struct st_texture_image *stImage = st_texture_image(texImage);
422 struct pipe_screen *screen = ctx->st->pipe->screen;
423 const struct gl_texture_format *mesa_format;
424 struct pipe_texture templ;
425 struct pipe_texture *src_tex;
426 struct pipe_surface *dst_surface;
427 struct pipe_transfer *tex_xfer;
428 void *map;
429
430
431 if (!stImage->pt) {
432 /* XXX: Can this happen? Should we assert? */
433 return GL_FALSE;
434 }
435
436 /* get destination surface (in the compressed texture) */
437 dst_surface = screen->get_tex_surface(screen, stImage->pt,
438 stImage->face, stImage->level, 0,
439 PIPE_BUFFER_USAGE_GPU_WRITE);
440 if (!dst_surface) {
441 /* can't render into this format (or other problem) */
442 return GL_FALSE;
443 }
444
445 /* Choose format for the temporary RGBA texture image.
446 */
447 mesa_format = st_ChooseTextureFormat(ctx, GL_RGBA, format, type);
448 assert(mesa_format);
449 if (!mesa_format)
450 return GL_FALSE;
451
452 /* Create the temporary source texture
453 */
454 memset(&templ, 0, sizeof(templ));
455 templ.target = PIPE_TEXTURE_2D;
456 templ.format = st_mesa_format_to_pipe_format(mesa_format->MesaFormat);
457 pf_get_block(templ.format, &templ.block);
458 templ.width[0] = width;
459 templ.height[0] = height;
460 templ.depth[0] = 1;
461 templ.last_level = 0;
462 templ.tex_usage = PIPE_TEXTURE_USAGE_SAMPLER;
463 src_tex = screen->texture_create(screen, &templ);
464
465 if (!src_tex)
466 return GL_FALSE;
467
468 /* Put user's tex data into the temporary texture
469 */
470 tex_xfer = st_cond_flush_get_tex_transfer(st_context(ctx), src_tex,
471 0, 0, 0, /* face, level are zero */
472 PIPE_TRANSFER_WRITE,
473 0, 0, width, height); /* x, y, w, h */
474 map = screen->transfer_map(screen, tex_xfer);
475
476 mesa_format->StoreImage(ctx, 2, GL_RGBA, mesa_format,
477 map, /* dest ptr */
478 0, 0, 0, /* dest x/y/z offset */
479 tex_xfer->stride, /* dest row stride (bytes) */
480 dstImageOffsets, /* image offsets (for 3D only) */
481 width, height, 1, /* size */
482 format, type, /* source format/type */
483 pixels, /* source data */
484 unpack); /* source data packing */
485
486 screen->transfer_unmap(screen, tex_xfer);
487 screen->tex_transfer_destroy(tex_xfer);
488
489 /* copy / compress image */
490 util_blit_pixels_tex(ctx->st->blit,
491 src_tex, /* pipe_texture (src) */
492 0, 0, /* src x0, y0 */
493 width, height, /* src x1, y1 */
494 dst_surface, /* pipe_surface (dst) */
495 xoffset, yoffset, /* dst x0, y0 */
496 xoffset + width, /* dst x1 */
497 yoffset + height, /* dst y1 */
498 0.0, /* z */
499 PIPE_TEX_MIPFILTER_NEAREST);
500
501 pipe_surface_reference(&dst_surface, NULL);
502 pipe_texture_reference(&src_tex, NULL);
503
504 return GL_TRUE;
505 }
506
507
508 /**
509 * Do glTexImage1/2/3D().
510 */
511 static void
512 st_TexImage(GLcontext * ctx,
513 GLint dims,
514 GLenum target, GLint level,
515 GLint internalFormat,
516 GLint width, GLint height, GLint depth,
517 GLint border,
518 GLenum format, GLenum type, const void *pixels,
519 const struct gl_pixelstore_attrib *unpack,
520 struct gl_texture_object *texObj,
521 struct gl_texture_image *texImage,
522 GLsizei imageSize, GLboolean compressed_src)
523 {
524 struct pipe_screen *screen = ctx->st->pipe->screen;
525 struct st_texture_object *stObj = st_texture_object(texObj);
526 struct st_texture_image *stImage = st_texture_image(texImage);
527 GLint postConvWidth, postConvHeight;
528 GLint texelBytes, sizeInBytes;
529 GLuint dstRowStride = 0;
530 struct gl_pixelstore_attrib unpackNB;
531 enum pipe_transfer_usage transfer_usage = 0;
532
533 DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
534 _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
535
536 /* gallium does not support texture borders, strip it off */
537 if (border) {
538 strip_texture_border(border, &width, &height, &depth, unpack, &unpackNB);
539 unpack = &unpackNB;
540 texImage->Width = width;
541 texImage->Height = height;
542 texImage->Depth = depth;
543 texImage->Border = 0;
544 border = 0;
545 }
546
547 postConvWidth = width;
548 postConvHeight = height;
549
550 stImage->face = _mesa_tex_target_to_face(target);
551 stImage->level = level;
552
553 #if FEATURE_convolve
554 if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
555 _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
556 &postConvHeight);
557 }
558 #endif
559
560 /* choose the texture format */
561 texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat,
562 format, type);
563
564 _mesa_set_fetch_functions(texImage, dims);
565
566 if (texImage->TexFormat->TexelBytes == 0) {
567 /* must be a compressed format */
568 texelBytes = 0;
569 texImage->IsCompressed = GL_TRUE;
570 texImage->CompressedSize =
571 ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
572 texImage->Height, texImage->Depth,
573 texImage->TexFormat->MesaFormat);
574 }
575 else {
576 texelBytes = texImage->TexFormat->TexelBytes;
577
578 /* Minimum pitch of 32 bytes */
579 if (postConvWidth * texelBytes < 32) {
580 postConvWidth = 32 / texelBytes;
581 texImage->RowStride = postConvWidth;
582 }
583
584 /* we'll set RowStride elsewhere when the texture is a "mapped" state */
585 /*assert(texImage->RowStride == postConvWidth);*/
586 }
587
588 /* Release the reference to a potentially orphaned buffer.
589 * Release any old malloced memory.
590 */
591 if (stImage->pt) {
592 pipe_texture_reference(&stImage->pt, NULL);
593 assert(!texImage->Data);
594 }
595 else if (texImage->Data) {
596 _mesa_align_free(texImage->Data);
597 }
598
599 if (width == 0 || height == 0 || depth == 0) {
600 /* stop after freeing old image */
601 return;
602 }
603
604 /* If this is the only mipmap level in the texture, could call
605 * bmBufferData with NULL data to free the old block and avoid
606 * waiting on any outstanding fences.
607 */
608 if (stObj->pt) {
609 if (stObj->teximage_realloc ||
610 level > (GLint) stObj->pt->last_level ||
611 (stObj->pt->last_level == level &&
612 stObj->pt->target != PIPE_TEXTURE_CUBE &&
613 !st_texture_match_image(stObj->pt, &stImage->base,
614 stImage->face, stImage->level))) {
615 DBG("release it\n");
616 pipe_texture_reference(&stObj->pt, NULL);
617 assert(!stObj->pt);
618 stObj->teximage_realloc = FALSE;
619 }
620 }
621
622 if (!stObj->pt) {
623 guess_and_alloc_texture(ctx->st, stObj, stImage);
624 if (!stObj->pt) {
625 /* Probably out of memory.
626 * Try flushing any pending rendering, then retry.
627 */
628 st_finish(ctx->st);
629 guess_and_alloc_texture(ctx->st, stObj, stImage);
630 if (!stObj->pt) {
631 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
632 return;
633 }
634 }
635 }
636
637 assert(!stImage->pt);
638
639 if (stObj->pt &&
640 st_texture_match_image(stObj->pt, &stImage->base,
641 stImage->face, stImage->level)) {
642
643 pipe_texture_reference(&stImage->pt, stObj->pt);
644 assert(stImage->pt);
645 }
646
647 if (!stImage->pt)
648 DBG("XXX: Image did not fit into texture - storing in local memory!\n");
649
650 /* st_CopyTexImage calls this function with pixels == NULL, with
651 * the expectation that the texture will be set up but nothing
652 * more will be done. This is where those calls return:
653 */
654 if (compressed_src) {
655 pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
656 unpack,
657 "glCompressedTexImage");
658 }
659 else {
660 pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
661 format, type,
662 pixels, unpack, "glTexImage");
663 }
664 if (!pixels)
665 return;
666
667 /* See if we can do texture compression with a blit/render.
668 */
669 if (!compressed_src &&
670 !ctx->Mesa_DXTn &&
671 is_compressed_mesa_format(texImage->TexFormat) &&
672 screen->is_format_supported(screen,
673 stImage->pt->format,
674 stImage->pt->target,
675 PIPE_TEXTURE_USAGE_RENDER_TARGET, 0)) {
676 if (compress_with_blit(ctx, target, level, 0, 0, 0, width, height, depth,
677 format, type, pixels, unpack, texImage)) {
678 goto done;
679 }
680 }
681
682 if (stImage->pt) {
683 if (format == GL_DEPTH_COMPONENT &&
684 pf_is_depth_and_stencil(stImage->pt->format))
685 transfer_usage = PIPE_TRANSFER_READ_WRITE;
686 else
687 transfer_usage = PIPE_TRANSFER_WRITE;
688
689 texImage->Data = st_texture_image_map(ctx->st, stImage, 0,
690 transfer_usage, 0, 0,
691 stImage->base.Width,
692 stImage->base.Height);
693 if(stImage->transfer)
694 dstRowStride = stImage->transfer->stride;
695 }
696 else {
697 /* Allocate regular memory and store the image there temporarily. */
698 if (texImage->IsCompressed) {
699 sizeInBytes = texImage->CompressedSize;
700 dstRowStride =
701 _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
702 assert(dims != 3);
703 }
704 else {
705 dstRowStride = postConvWidth * texelBytes;
706 sizeInBytes = depth * dstRowStride * postConvHeight;
707 }
708
709 texImage->Data = _mesa_align_malloc(sizeInBytes, 16);
710 }
711
712 if (!texImage->Data) {
713 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
714 return;
715 }
716
717 DBG("Upload image %dx%dx%d row_len %x pitch %x\n",
718 width, height, depth, width * texelBytes, dstRowStride);
719
720 /* Copy data. Would like to know when it's ok for us to eg. use
721 * the blitter to copy. Or, use the hardware to do the format
722 * conversion and copy:
723 */
724 if (compressed_src) {
725 memcpy(texImage->Data, pixels, imageSize);
726 }
727 else {
728 const GLuint srcImageStride =
729 _mesa_image_image_stride(unpack, width, height, format, type);
730 GLint i;
731 const GLubyte *src = (const GLubyte *) pixels;
732
733 for (i = 0; i < depth; i++) {
734 if (!texImage->TexFormat->StoreImage(ctx, dims,
735 texImage->_BaseFormat,
736 texImage->TexFormat,
737 texImage->Data,
738 0, 0, 0, /* dstX/Y/Zoffset */
739 dstRowStride,
740 texImage->ImageOffsets,
741 width, height, 1,
742 format, type, src, unpack)) {
743 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
744 }
745
746 if (stImage->pt && i + 1 < depth) {
747 /* unmap this slice */
748 st_texture_image_unmap(ctx->st, stImage);
749 /* map next slice of 3D texture */
750 texImage->Data = st_texture_image_map(ctx->st, stImage, i + 1,
751 transfer_usage, 0, 0,
752 stImage->base.Width,
753 stImage->base.Height);
754 src += srcImageStride;
755 }
756 }
757 }
758
759 _mesa_unmap_teximage_pbo(ctx, unpack);
760
761 done:
762 if (stImage->pt && texImage->Data) {
763 st_texture_image_unmap(ctx->st, stImage);
764 texImage->Data = NULL;
765 }
766
767 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
768 ctx->Driver.GenerateMipmap(ctx, target, texObj);
769 }
770 }
771
772
773 static void
774 st_TexImage3D(GLcontext * ctx,
775 GLenum target, GLint level,
776 GLint internalFormat,
777 GLint width, GLint height, GLint depth,
778 GLint border,
779 GLenum format, GLenum type, const void *pixels,
780 const struct gl_pixelstore_attrib *unpack,
781 struct gl_texture_object *texObj,
782 struct gl_texture_image *texImage)
783 {
784 st_TexImage(ctx, 3, target, level, internalFormat, width, height, depth,
785 border, format, type, pixels, unpack, texObj, texImage,
786 0, GL_FALSE);
787 }
788
789
790 static void
791 st_TexImage2D(GLcontext * ctx,
792 GLenum target, GLint level,
793 GLint internalFormat,
794 GLint width, GLint height, GLint border,
795 GLenum format, GLenum type, const void *pixels,
796 const struct gl_pixelstore_attrib *unpack,
797 struct gl_texture_object *texObj,
798 struct gl_texture_image *texImage)
799 {
800 st_TexImage(ctx, 2, target, level, internalFormat, width, height, 1, border,
801 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
802 }
803
804
805 static void
806 st_TexImage1D(GLcontext * ctx,
807 GLenum target, GLint level,
808 GLint internalFormat,
809 GLint width, GLint border,
810 GLenum format, GLenum type, const void *pixels,
811 const struct gl_pixelstore_attrib *unpack,
812 struct gl_texture_object *texObj,
813 struct gl_texture_image *texImage)
814 {
815 st_TexImage(ctx, 1, target, level, internalFormat, width, 1, 1, border,
816 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
817 }
818
819
820 static void
821 st_CompressedTexImage2D(GLcontext *ctx, GLenum target, GLint level,
822 GLint internalFormat,
823 GLint width, GLint height, GLint border,
824 GLsizei imageSize, const GLvoid *data,
825 struct gl_texture_object *texObj,
826 struct gl_texture_image *texImage)
827 {
828 st_TexImage(ctx, 2, target, level, internalFormat, width, height, 1, border,
829 0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
830 }
831
832
833
834 /**
835 * glGetTexImage() helper: decompress a compressed texture by rendering
836 * a textured quad. Store the results in the user's buffer.
837 */
838 static void
839 decompress_with_blit(GLcontext * ctx, GLenum target, GLint level,
840 GLenum format, GLenum type, GLvoid *pixels,
841 struct gl_texture_object *texObj,
842 struct gl_texture_image *texImage)
843 {
844 struct pipe_screen *screen = ctx->st->pipe->screen;
845 struct st_texture_image *stImage = st_texture_image(texImage);
846 const GLuint width = texImage->Width;
847 const GLuint height = texImage->Height;
848 struct pipe_surface *dst_surface;
849 struct pipe_texture *dst_texture;
850 struct pipe_transfer *tex_xfer;
851
852 /* create temp / dest surface */
853 if (!util_create_rgba_surface(screen, width, height,
854 &dst_texture, &dst_surface)) {
855 _mesa_problem(ctx, "util_create_rgba_surface() failed "
856 "in decompress_with_blit()");
857 return;
858 }
859
860 /* blit/render/decompress */
861 util_blit_pixels_tex(ctx->st->blit,
862 stImage->pt, /* pipe_texture (src) */
863 0, 0, /* src x0, y0 */
864 width, height, /* src x1, y1 */
865 dst_surface, /* pipe_surface (dst) */
866 0, 0, /* dst x0, y0 */
867 width, height, /* dst x1, y1 */
868 0.0, /* z */
869 PIPE_TEX_MIPFILTER_NEAREST);
870
871 /* map the dst_surface so we can read from it */
872 tex_xfer = st_cond_flush_get_tex_transfer(st_context(ctx),
873 dst_texture, 0, 0, 0,
874 PIPE_TRANSFER_READ,
875 0, 0, width, height);
876
877 pixels = _mesa_map_readpix_pbo(ctx, &ctx->Pack, pixels);
878
879 /* copy/pack data into user buffer */
880 if (st_equal_formats(stImage->pt->format, format, type)) {
881 /* memcpy */
882 const uint bytesPerRow = width * pf_get_size(stImage->pt->format);
883 ubyte *map = screen->transfer_map(screen, tex_xfer);
884 GLuint row;
885 for (row = 0; row < height; row++) {
886 GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width,
887 height, format, type, row, 0);
888 memcpy(dest, map, bytesPerRow);
889 map += tex_xfer->stride;
890 }
891 screen->transfer_unmap(screen, tex_xfer);
892 }
893 else {
894 /* format translation via floats */
895 GLuint row;
896 for (row = 0; row < height; row++) {
897 const GLbitfield transferOps = 0x0; /* bypassed for glGetTexImage() */
898 GLfloat rgba[4 * MAX_WIDTH];
899 GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width,
900 height, format, type, row, 0);
901
902 /* get float[4] rgba row from surface */
903 pipe_get_tile_rgba(tex_xfer, 0, row, width, 1, rgba);
904
905 _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, format,
906 type, dest, &ctx->Pack, transferOps);
907 }
908 }
909
910 _mesa_unmap_readpix_pbo(ctx, &ctx->Pack);
911
912 /* destroy the temp / dest surface */
913 util_destroy_rgba_surface(dst_texture, dst_surface);
914 }
915
916
917
918 /**
919 * Need to map texture image into memory before copying image data,
920 * then unmap it.
921 */
922 static void
923 st_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
924 GLenum format, GLenum type, GLvoid * pixels,
925 struct gl_texture_object *texObj,
926 struct gl_texture_image *texImage, GLboolean compressed_dst)
927 {
928 struct st_texture_image *stImage = st_texture_image(texImage);
929 const GLuint dstImageStride =
930 _mesa_image_image_stride(&ctx->Pack, texImage->Width, texImage->Height,
931 format, type);
932 GLuint depth, i;
933 GLubyte *dest;
934
935 if (stImage->pt &&
936 pf_is_compressed(stImage->pt->format) &&
937 !compressed_dst) {
938 /* Need to decompress the texture.
939 * We'll do this by rendering a textured quad.
940 * Note that we only expect RGBA formats (no Z/depth formats).
941 */
942 decompress_with_blit(ctx, target, level, format, type, pixels,
943 texObj, texImage);
944 return;
945 }
946
947 /* Map */
948 if (stImage->pt) {
949 /* Image is stored in hardware format in a buffer managed by the
950 * kernel. Need to explicitly map and unmap it.
951 */
952 unsigned face = _mesa_tex_target_to_face(target);
953
954 st_teximage_flush_before_map(ctx->st, stImage->pt, face, level,
955 PIPE_TRANSFER_READ);
956
957 texImage->Data = st_texture_image_map(ctx->st, stImage, 0,
958 PIPE_TRANSFER_READ, 0, 0,
959 stImage->base.Width,
960 stImage->base.Height);
961 texImage->RowStride = stImage->transfer->stride / stImage->pt->block.size;
962 }
963 else {
964 /* Otherwise, the image should actually be stored in
965 * texImage->Data. This is pretty confusing for
966 * everybody, I'd much prefer to separate the two functions of
967 * texImage->Data - storage for texture images in main memory
968 * and access (ie mappings) of images. In other words, we'd
969 * create a new texImage->Map field and leave Data simply for
970 * storage.
971 */
972 assert(texImage->Data);
973 }
974
975 depth = texImage->Depth;
976 texImage->Depth = 1;
977
978 dest = (GLubyte *) pixels;
979
980 for (i = 0; i < depth; i++) {
981 if (compressed_dst) {
982 _mesa_get_compressed_teximage(ctx, target, level, dest,
983 texObj, texImage);
984 }
985 else {
986 _mesa_get_teximage(ctx, target, level, format, type, dest,
987 texObj, texImage);
988 }
989
990 if (stImage->pt && i + 1 < depth) {
991 /* unmap this slice */
992 st_texture_image_unmap(ctx->st, stImage);
993 /* map next slice of 3D texture */
994 texImage->Data = st_texture_image_map(ctx->st, stImage, i + 1,
995 PIPE_TRANSFER_READ, 0, 0,
996 stImage->base.Width,
997 stImage->base.Height);
998 dest += dstImageStride;
999 }
1000 }
1001
1002 texImage->Depth = depth;
1003
1004 /* Unmap */
1005 if (stImage->pt) {
1006 st_texture_image_unmap(ctx->st, stImage);
1007 texImage->Data = NULL;
1008 }
1009 }
1010
1011
1012 static void
1013 st_GetTexImage(GLcontext * ctx, GLenum target, GLint level,
1014 GLenum format, GLenum type, GLvoid * pixels,
1015 struct gl_texture_object *texObj,
1016 struct gl_texture_image *texImage)
1017 {
1018 st_get_tex_image(ctx, target, level, format, type, pixels, texObj, texImage,
1019 GL_FALSE);
1020 }
1021
1022
1023 static void
1024 st_GetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
1025 GLvoid *pixels,
1026 struct gl_texture_object *texObj,
1027 struct gl_texture_image *texImage)
1028 {
1029 st_get_tex_image(ctx, target, level, 0, 0, pixels, texObj, texImage,
1030 GL_TRUE);
1031 }
1032
1033
1034
1035 static void
1036 st_TexSubimage(GLcontext *ctx, GLint dims, GLenum target, GLint level,
1037 GLint xoffset, GLint yoffset, GLint zoffset,
1038 GLint width, GLint height, GLint depth,
1039 GLenum format, GLenum type, const void *pixels,
1040 const struct gl_pixelstore_attrib *packing,
1041 struct gl_texture_object *texObj,
1042 struct gl_texture_image *texImage)
1043 {
1044 struct pipe_screen *screen = ctx->st->pipe->screen;
1045 struct st_texture_image *stImage = st_texture_image(texImage);
1046 GLuint dstRowStride;
1047 const GLuint srcImageStride =
1048 _mesa_image_image_stride(packing, width, height, format, type);
1049 GLint i;
1050 const GLubyte *src;
1051 /* init to silence warning only: */
1052 enum pipe_transfer_usage transfer_usage = PIPE_TRANSFER_WRITE;
1053
1054 DBG("%s target %s level %d offset %d,%d %dx%d\n", __FUNCTION__,
1055 _mesa_lookup_enum_by_nr(target),
1056 level, xoffset, yoffset, width, height);
1057
1058 pixels =
1059 _mesa_validate_pbo_teximage(ctx, dims, width, height, depth, format,
1060 type, pixels, packing, "glTexSubImage2D");
1061 if (!pixels)
1062 return;
1063
1064 /* See if we can do texture compression with a blit/render.
1065 */
1066 if (!ctx->Mesa_DXTn &&
1067 is_compressed_mesa_format(texImage->TexFormat) &&
1068 screen->is_format_supported(screen,
1069 stImage->pt->format,
1070 stImage->pt->target,
1071 PIPE_TEXTURE_USAGE_RENDER_TARGET, 0)) {
1072 if (compress_with_blit(ctx, target, level,
1073 xoffset, yoffset, zoffset,
1074 width, height, depth,
1075 format, type, pixels, packing, texImage)) {
1076 goto done;
1077 }
1078 }
1079
1080 /* Map buffer if necessary. Need to lock to prevent other contexts
1081 * from uploading the buffer under us.
1082 */
1083 if (stImage->pt) {
1084 unsigned face = _mesa_tex_target_to_face(target);
1085
1086 if (format == GL_DEPTH_COMPONENT &&
1087 pf_is_depth_and_stencil(stImage->pt->format))
1088 transfer_usage = PIPE_TRANSFER_READ_WRITE;
1089 else
1090 transfer_usage = PIPE_TRANSFER_WRITE;
1091
1092 st_teximage_flush_before_map(ctx->st, stImage->pt, face, level,
1093 transfer_usage);
1094 texImage->Data = st_texture_image_map(ctx->st, stImage, zoffset,
1095 transfer_usage,
1096 xoffset, yoffset,
1097 width, height);
1098 }
1099
1100 if (!texImage->Data) {
1101 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage");
1102 return;
1103 }
1104
1105 src = (const GLubyte *) pixels;
1106 dstRowStride = stImage->transfer->stride;
1107
1108 for (i = 0; i < depth; i++) {
1109 if (!texImage->TexFormat->StoreImage(ctx, dims, texImage->_BaseFormat,
1110 texImage->TexFormat,
1111 texImage->Data,
1112 0, 0, 0,
1113 dstRowStride,
1114 texImage->ImageOffsets,
1115 width, height, 1,
1116 format, type, src, packing)) {
1117 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage");
1118 }
1119
1120 if (stImage->pt && i + 1 < depth) {
1121 /* unmap this slice */
1122 st_texture_image_unmap(ctx->st, stImage);
1123 /* map next slice of 3D texture */
1124 texImage->Data = st_texture_image_map(ctx->st, stImage,
1125 zoffset + i + 1,
1126 transfer_usage,
1127 xoffset, yoffset,
1128 width, height);
1129 src += srcImageStride;
1130 }
1131 }
1132
1133 _mesa_unmap_teximage_pbo(ctx, packing);
1134
1135 done:
1136 if (stImage->pt) {
1137 st_texture_image_unmap(ctx->st, stImage);
1138 texImage->Data = NULL;
1139 }
1140
1141 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
1142 ctx->Driver.GenerateMipmap(ctx, target, texObj);
1143 }
1144 }
1145
1146
1147
1148 static void
1149 st_TexSubImage3D(GLcontext *ctx, GLenum target, GLint level,
1150 GLint xoffset, GLint yoffset, GLint zoffset,
1151 GLsizei width, GLsizei height, GLsizei depth,
1152 GLenum format, GLenum type, const GLvoid *pixels,
1153 const struct gl_pixelstore_attrib *packing,
1154 struct gl_texture_object *texObj,
1155 struct gl_texture_image *texImage)
1156 {
1157 st_TexSubimage(ctx, 3, target, level, xoffset, yoffset, zoffset,
1158 width, height, depth, format, type,
1159 pixels, packing, texObj, texImage);
1160 }
1161
1162
1163 static void
1164 st_TexSubImage2D(GLcontext *ctx, GLenum target, GLint level,
1165 GLint xoffset, GLint yoffset,
1166 GLsizei width, GLsizei height,
1167 GLenum format, GLenum type, const GLvoid * pixels,
1168 const struct gl_pixelstore_attrib *packing,
1169 struct gl_texture_object *texObj,
1170 struct gl_texture_image *texImage)
1171 {
1172 st_TexSubimage(ctx, 2, target, level, xoffset, yoffset, 0,
1173 width, height, 1, format, type,
1174 pixels, packing, texObj, texImage);
1175 }
1176
1177
1178 static void
1179 st_TexSubImage1D(GLcontext *ctx, GLenum target, GLint level,
1180 GLint xoffset, GLsizei width, GLenum format, GLenum type,
1181 const GLvoid * pixels,
1182 const struct gl_pixelstore_attrib *packing,
1183 struct gl_texture_object *texObj,
1184 struct gl_texture_image *texImage)
1185 {
1186 st_TexSubimage(ctx, 1, target, level, xoffset, 0, 0, width, 1, 1,
1187 format, type, pixels, packing, texObj, texImage);
1188 }
1189
1190
1191 static void
1192 st_CompressedTexSubImage1D(GLcontext *ctx, GLenum target, GLint level,
1193 GLint xoffset, GLsizei width,
1194 GLenum format,
1195 GLsizei imageSize, const GLvoid *data,
1196 struct gl_texture_object *texObj,
1197 struct gl_texture_image *texImage)
1198 {
1199 assert(0);
1200 }
1201
1202
1203 static void
1204 st_CompressedTexSubImage2D(GLcontext *ctx, GLenum target, GLint level,
1205 GLint xoffset, GLint yoffset,
1206 GLsizei width, GLint height,
1207 GLenum format,
1208 GLsizei imageSize, const GLvoid *data,
1209 struct gl_texture_object *texObj,
1210 struct gl_texture_image *texImage)
1211 {
1212 struct st_texture_image *stImage = st_texture_image(texImage);
1213 struct pipe_format_block block;
1214 int srcBlockStride;
1215 int dstBlockStride;
1216 int y;
1217
1218 if (stImage->pt) {
1219 unsigned face = _mesa_tex_target_to_face(target);
1220
1221 st_teximage_flush_before_map(ctx->st, stImage->pt, face, level,
1222 PIPE_TRANSFER_WRITE);
1223 texImage->Data = st_texture_image_map(ctx->st, stImage, 0,
1224 PIPE_TRANSFER_WRITE,
1225 xoffset, yoffset,
1226 width, height);
1227
1228 block = stImage->pt->block;
1229 srcBlockStride = pf_get_stride(&block, width);
1230 dstBlockStride = stImage->transfer->stride;
1231 } else {
1232 assert(stImage->pt);
1233 /* TODO find good values for block and strides */
1234 /* TODO also adjust texImage->data for yoffset/xoffset */
1235 return;
1236 }
1237
1238 if (!texImage->Data) {
1239 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexSubImage");
1240 return;
1241 }
1242
1243 assert(xoffset % block.width == 0);
1244 assert(yoffset % block.height == 0);
1245 assert(width % block.width == 0);
1246 assert(height % block.height == 0);
1247
1248 for (y = 0; y < height; y += block.height) {
1249 /* don't need to adjust for xoffset and yoffset as st_texture_image_map does that */
1250 const char *src = (const char*)data + srcBlockStride * pf_get_nblocksy(&block, y);
1251 char *dst = (char*)texImage->Data + dstBlockStride * pf_get_nblocksy(&block, y);
1252 memcpy(dst, src, pf_get_stride(&block, width));
1253 }
1254
1255 if (stImage->pt) {
1256 st_texture_image_unmap(ctx->st, stImage);
1257 texImage->Data = NULL;
1258 }
1259 }
1260
1261
1262 static void
1263 st_CompressedTexSubImage3D(GLcontext *ctx, GLenum target, GLint level,
1264 GLint xoffset, GLint yoffset, GLint zoffset,
1265 GLsizei width, GLint height, GLint depth,
1266 GLenum format,
1267 GLsizei imageSize, const GLvoid *data,
1268 struct gl_texture_object *texObj,
1269 struct gl_texture_image *texImage)
1270 {
1271 assert(0);
1272 }
1273
1274
1275
1276 /**
1277 * Do a CopyTexSubImage operation using a read transfer from the source,
1278 * a write transfer to the destination and get_tile()/put_tile() to access
1279 * the pixels/texels.
1280 *
1281 * Note: srcY=0=TOP of renderbuffer
1282 */
1283 static void
1284 fallback_copy_texsubimage(GLcontext *ctx, GLenum target, GLint level,
1285 struct st_renderbuffer *strb,
1286 struct st_texture_image *stImage,
1287 GLenum baseFormat,
1288 GLint destX, GLint destY, GLint destZ,
1289 GLint srcX, GLint srcY,
1290 GLsizei width, GLsizei height)
1291 {
1292 struct pipe_context *pipe = ctx->st->pipe;
1293 struct pipe_screen *screen = pipe->screen;
1294 struct pipe_transfer *src_trans;
1295 GLvoid *texDest;
1296 enum pipe_transfer_usage transfer_usage;
1297
1298 assert(width <= MAX_WIDTH);
1299
1300 if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
1301 srcY = strb->Base.Height - srcY - height;
1302 }
1303
1304 src_trans = st_cond_flush_get_tex_transfer( st_context(ctx),
1305 strb->texture,
1306 0, 0, 0,
1307 PIPE_TRANSFER_READ,
1308 srcX, srcY,
1309 width, height);
1310
1311 if (baseFormat == GL_DEPTH_COMPONENT &&
1312 pf_is_depth_and_stencil(stImage->pt->format))
1313 transfer_usage = PIPE_TRANSFER_READ_WRITE;
1314 else
1315 transfer_usage = PIPE_TRANSFER_WRITE;
1316
1317 st_teximage_flush_before_map(ctx->st, stImage->pt, 0, 0,
1318 transfer_usage);
1319
1320 texDest = st_texture_image_map(ctx->st, stImage, 0, transfer_usage,
1321 destX, destY, width, height);
1322
1323 if (baseFormat == GL_DEPTH_COMPONENT ||
1324 baseFormat == GL_DEPTH24_STENCIL8) {
1325 const GLboolean scaleOrBias = (ctx->Pixel.DepthScale != 1.0F ||
1326 ctx->Pixel.DepthBias != 0.0F);
1327 GLint row, yStep;
1328
1329 /* determine bottom-to-top vs. top-to-bottom order for src buffer */
1330 if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
1331 srcY = height - 1;
1332 yStep = -1;
1333 }
1334 else {
1335 srcY = 0;
1336 yStep = 1;
1337 }
1338
1339 /* To avoid a large temp memory allocation, do copy row by row */
1340 for (row = 0; row < height; row++, srcY += yStep) {
1341 uint data[MAX_WIDTH];
1342 pipe_get_tile_z(src_trans, 0, srcY, width, 1, data);
1343 if (scaleOrBias) {
1344 _mesa_scale_and_bias_depth_uint(ctx, width, data);
1345 }
1346 pipe_put_tile_z(stImage->transfer, 0, row, width, 1, data);
1347 }
1348 }
1349 else {
1350 /* RGBA format */
1351 GLfloat *tempSrc =
1352 (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
1353
1354 if (tempSrc && texDest) {
1355 const GLint dims = 2;
1356 const GLint dstRowStride = stImage->transfer->stride;
1357 struct gl_texture_image *texImage = &stImage->base;
1358 struct gl_pixelstore_attrib unpack = ctx->DefaultPacking;
1359
1360 if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
1361 unpack.Invert = GL_TRUE;
1362 }
1363
1364 /* get float/RGBA image from framebuffer */
1365 /* XXX this usually involves a lot of int/float conversion.
1366 * try to avoid that someday.
1367 */
1368 pipe_get_tile_rgba(src_trans, 0, 0, width, height, tempSrc);
1369
1370 /* Store into texture memory.
1371 * Note that this does some special things such as pixel transfer
1372 * ops and format conversion. In particular, if the dest tex format
1373 * is actually RGBA but the user created the texture as GL_RGB we
1374 * need to fill-in/override the alpha channel with 1.0.
1375 */
1376 texImage->TexFormat->StoreImage(ctx, dims,
1377 texImage->_BaseFormat,
1378 texImage->TexFormat,
1379 texDest,
1380 0, 0, 0,
1381 dstRowStride,
1382 texImage->ImageOffsets,
1383 width, height, 1,
1384 GL_RGBA, GL_FLOAT, tempSrc, /* src */
1385 &unpack);
1386 }
1387 else {
1388 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage");
1389 }
1390
1391 if (tempSrc)
1392 _mesa_free(tempSrc);
1393 }
1394
1395 st_texture_image_unmap(ctx->st, stImage);
1396 screen->tex_transfer_destroy(src_trans);
1397 }
1398
1399
1400 static unsigned
1401 compatible_src_dst_formats(const struct gl_renderbuffer *src,
1402 const struct gl_texture_image *dst)
1403 {
1404 const GLenum srcFormat = src->_BaseFormat;
1405 const GLenum dstLogicalFormat = dst->_BaseFormat;
1406
1407 if (srcFormat == dstLogicalFormat) {
1408 /* This is the same as matching_base_formats, which should
1409 * always pass, as it did previously.
1410 */
1411 return TGSI_WRITEMASK_XYZW;
1412 }
1413 else if (srcFormat == GL_RGBA &&
1414 dstLogicalFormat == GL_RGB) {
1415 /* Add a single special case to cope with RGBA->RGB transfers,
1416 * setting A to 1.0 to cope with situations where the RGB
1417 * destination is actually stored as RGBA.
1418 */
1419 return TGSI_WRITEMASK_XYZ; /* A ==> 1.0 */
1420 }
1421 else {
1422 /* Otherwise fail.
1423 */
1424 return 0;
1425 }
1426 }
1427
1428
1429
1430 /**
1431 * Do a CopyTex[Sub]Image1/2/3D() using a hardware (blit) path if possible.
1432 * Note that the region to copy has already been clipped so we know we
1433 * won't read from outside the source renderbuffer's bounds.
1434 *
1435 * Note: srcY=0=Bottom of renderbuffer (GL convention)
1436 */
1437 static void
1438 st_copy_texsubimage(GLcontext *ctx,
1439 GLenum target, GLint level,
1440 GLint destX, GLint destY, GLint destZ,
1441 GLint srcX, GLint srcY,
1442 GLsizei width, GLsizei height)
1443 {
1444 struct gl_texture_unit *texUnit =
1445 &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1446 struct gl_texture_object *texObj =
1447 _mesa_select_tex_object(ctx, texUnit, target);
1448 struct gl_texture_image *texImage =
1449 _mesa_select_tex_image(ctx, texObj, target, level);
1450 struct st_texture_image *stImage = st_texture_image(texImage);
1451 const GLenum texBaseFormat = texImage->InternalFormat;
1452 struct gl_framebuffer *fb = ctx->ReadBuffer;
1453 struct st_renderbuffer *strb;
1454 struct pipe_context *pipe = ctx->st->pipe;
1455 struct pipe_screen *screen = pipe->screen;
1456 enum pipe_format dest_format, src_format;
1457 GLboolean use_fallback = GL_TRUE;
1458 GLboolean matching_base_formats;
1459 GLuint format_writemask;
1460 struct pipe_surface *dest_surface = NULL;
1461 GLboolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP);
1462
1463 /* any rendering in progress must flushed before we grab the fb image */
1464 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
1465
1466 /* make sure finalize_textures has been called?
1467 */
1468 if (0) st_validate_state(ctx->st);
1469
1470 /* determine if copying depth or color data */
1471 if (texBaseFormat == GL_DEPTH_COMPONENT ||
1472 texBaseFormat == GL_DEPTH24_STENCIL8) {
1473 strb = st_renderbuffer(fb->_DepthBuffer);
1474 }
1475 else if (texBaseFormat == GL_DEPTH_STENCIL_EXT) {
1476 strb = st_renderbuffer(fb->_StencilBuffer);
1477 }
1478 else {
1479 /* texBaseFormat == GL_RGB, GL_RGBA, GL_ALPHA, etc */
1480 strb = st_renderbuffer(fb->_ColorReadBuffer);
1481 }
1482
1483 if (!strb || !strb->surface || !stImage->pt) {
1484 debug_printf("%s: null strb or stImage\n", __FUNCTION__);
1485 return;
1486 }
1487
1488 if (srcX < 0) {
1489 width -= -srcX;
1490 destX += -srcX;
1491 srcX = 0;
1492 }
1493
1494 if (srcY < 0) {
1495 height -= -srcY;
1496 destY += -srcY;
1497 srcY = 0;
1498 }
1499
1500 if (destX < 0) {
1501 width -= -destX;
1502 srcX += -destX;
1503 destX = 0;
1504 }
1505
1506 if (destY < 0) {
1507 height -= -destY;
1508 srcY += -destY;
1509 destY = 0;
1510 }
1511
1512 if (width < 0 || height < 0)
1513 return;
1514
1515
1516 assert(strb);
1517 assert(strb->surface);
1518 assert(stImage->pt);
1519
1520 src_format = strb->surface->format;
1521 dest_format = stImage->pt->format;
1522
1523 /*
1524 * Determine if the src framebuffer and dest texture have the same
1525 * base format. We need this to detect a case such as the framebuffer
1526 * being GL_RGBA but the texture being GL_RGB. If the actual hardware
1527 * texture format stores RGBA we need to set A=1 (overriding the
1528 * framebuffer's alpha values). We can't do that with the blit or
1529 * textured-quad paths.
1530 */
1531 matching_base_formats = (strb->Base._BaseFormat == texImage->_BaseFormat);
1532 format_writemask = compatible_src_dst_formats(&strb->Base, texImage);
1533
1534 if (ctx->_ImageTransferState == 0x0) {
1535
1536 if (matching_base_formats &&
1537 src_format == dest_format &&
1538 !do_flip)
1539 {
1540 /* use surface_copy() / blit */
1541
1542 dest_surface = screen->get_tex_surface(screen, stImage->pt,
1543 stImage->face, stImage->level,
1544 destZ,
1545 PIPE_BUFFER_USAGE_GPU_WRITE);
1546
1547 /* for surface_copy(), y=0=top, always */
1548 pipe->surface_copy(pipe,
1549 /* dest */
1550 dest_surface,
1551 destX, destY,
1552 /* src */
1553 strb->surface,
1554 srcX, srcY,
1555 /* size */
1556 width, height);
1557 use_fallback = GL_FALSE;
1558 }
1559 else if (format_writemask &&
1560 screen->is_format_supported(screen, src_format,
1561 PIPE_TEXTURE_2D,
1562 PIPE_TEXTURE_USAGE_SAMPLER,
1563 0) &&
1564 screen->is_format_supported(screen, dest_format,
1565 PIPE_TEXTURE_2D,
1566 PIPE_TEXTURE_USAGE_RENDER_TARGET,
1567 0)) {
1568 /* draw textured quad to do the copy */
1569 GLint srcY0, srcY1;
1570
1571 dest_surface = screen->get_tex_surface(screen, stImage->pt,
1572 stImage->face, stImage->level,
1573 destZ,
1574 PIPE_BUFFER_USAGE_GPU_WRITE);
1575
1576 if (do_flip) {
1577 srcY1 = strb->Base.Height - srcY - height;
1578 srcY0 = srcY1 + height;
1579 }
1580 else {
1581 srcY0 = srcY;
1582 srcY1 = srcY0 + height;
1583 }
1584 util_blit_pixels_writemask(ctx->st->blit,
1585 strb->surface,
1586 srcX, srcY0,
1587 srcX + width, srcY1,
1588 dest_surface,
1589 destX, destY,
1590 destX + width, destY + height,
1591 0.0, PIPE_TEX_MIPFILTER_NEAREST,
1592 format_writemask);
1593 use_fallback = GL_FALSE;
1594 }
1595
1596 if (dest_surface)
1597 pipe_surface_reference(&dest_surface, NULL);
1598 }
1599
1600 if (use_fallback) {
1601 /* software fallback */
1602 fallback_copy_texsubimage(ctx, target, level,
1603 strb, stImage, texBaseFormat,
1604 destX, destY, destZ,
1605 srcX, srcY, width, height);
1606 }
1607
1608 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
1609 ctx->Driver.GenerateMipmap(ctx, target, texObj);
1610 }
1611 }
1612
1613
1614
1615 static void
1616 st_CopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
1617 GLenum internalFormat,
1618 GLint x, GLint y, GLsizei width, GLint border)
1619 {
1620 struct gl_texture_unit *texUnit =
1621 &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1622 struct gl_texture_object *texObj =
1623 _mesa_select_tex_object(ctx, texUnit, target);
1624 struct gl_texture_image *texImage =
1625 _mesa_select_tex_image(ctx, texObj, target, level);
1626
1627 /* Setup or redefine the texture object, texture and texture
1628 * image. Don't populate yet.
1629 */
1630 ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
1631 width, border,
1632 GL_RGBA, CHAN_TYPE, NULL,
1633 &ctx->DefaultPacking, texObj, texImage);
1634
1635 st_copy_texsubimage(ctx, target, level,
1636 0, 0, 0, /* destX,Y,Z */
1637 x, y, width, 1); /* src X, Y, size */
1638 }
1639
1640
1641 static void
1642 st_CopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
1643 GLenum internalFormat,
1644 GLint x, GLint y, GLsizei width, GLsizei height,
1645 GLint border)
1646 {
1647 struct gl_texture_unit *texUnit =
1648 &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1649 struct gl_texture_object *texObj =
1650 _mesa_select_tex_object(ctx, texUnit, target);
1651 struct gl_texture_image *texImage =
1652 _mesa_select_tex_image(ctx, texObj, target, level);
1653
1654 /* Setup or redefine the texture object, texture and texture
1655 * image. Don't populate yet.
1656 */
1657 ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
1658 width, height, border,
1659 GL_RGBA, CHAN_TYPE, NULL,
1660 &ctx->DefaultPacking, texObj, texImage);
1661
1662 st_copy_texsubimage(ctx, target, level,
1663 0, 0, 0, /* destX,Y,Z */
1664 x, y, width, height); /* src X, Y, size */
1665 }
1666
1667
1668 static void
1669 st_CopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
1670 GLint xoffset, GLint x, GLint y, GLsizei width)
1671 {
1672 const GLint yoffset = 0, zoffset = 0;
1673 const GLsizei height = 1;
1674 st_copy_texsubimage(ctx, target, level,
1675 xoffset, yoffset, zoffset, /* destX,Y,Z */
1676 x, y, width, height); /* src X, Y, size */
1677 }
1678
1679
1680 static void
1681 st_CopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
1682 GLint xoffset, GLint yoffset,
1683 GLint x, GLint y, GLsizei width, GLsizei height)
1684 {
1685 const GLint zoffset = 0;
1686 st_copy_texsubimage(ctx, target, level,
1687 xoffset, yoffset, zoffset, /* destX,Y,Z */
1688 x, y, width, height); /* src X, Y, size */
1689 }
1690
1691
1692 static void
1693 st_CopyTexSubImage3D(GLcontext * ctx, GLenum target, GLint level,
1694 GLint xoffset, GLint yoffset, GLint zoffset,
1695 GLint x, GLint y, GLsizei width, GLsizei height)
1696 {
1697 st_copy_texsubimage(ctx, target, level,
1698 xoffset, yoffset, zoffset, /* destX,Y,Z */
1699 x, y, width, height); /* src X, Y, size */
1700 }
1701
1702
1703 /**
1704 * Compute which mipmap levels that really need to be sent to the hardware.
1705 * This depends on the base image size, GL_TEXTURE_MIN_LOD,
1706 * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
1707 */
1708 static void
1709 calculate_first_last_level(struct st_texture_object *stObj)
1710 {
1711 struct gl_texture_object *tObj = &stObj->base;
1712
1713 /* These must be signed values. MinLod and MaxLod can be negative numbers,
1714 * and having firstLevel and lastLevel as signed prevents the need for
1715 * extra sign checks.
1716 */
1717 GLint firstLevel;
1718 GLint lastLevel;
1719
1720 /* Yes, this looks overly complicated, but it's all needed.
1721 */
1722 switch (tObj->Target) {
1723 case GL_TEXTURE_1D:
1724 case GL_TEXTURE_2D:
1725 case GL_TEXTURE_3D:
1726 case GL_TEXTURE_CUBE_MAP:
1727 if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) {
1728 /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
1729 */
1730 firstLevel = lastLevel = tObj->BaseLevel;
1731 }
1732 else {
1733 firstLevel = 0;
1734 lastLevel = MIN2(tObj->MaxLevel,
1735 (int) tObj->Image[0][tObj->BaseLevel]->WidthLog2);
1736 }
1737 break;
1738 case GL_TEXTURE_RECTANGLE_NV:
1739 case GL_TEXTURE_4D_SGIS:
1740 firstLevel = lastLevel = 0;
1741 break;
1742 default:
1743 return;
1744 }
1745
1746 stObj->lastLevel = lastLevel;
1747 }
1748
1749
1750 static void
1751 copy_image_data_to_texture(struct st_context *st,
1752 struct st_texture_object *stObj,
1753 GLuint dstLevel,
1754 struct st_texture_image *stImage)
1755 {
1756 if (stImage->pt) {
1757 /* Copy potentially with the blitter:
1758 */
1759 st_texture_image_copy(st->pipe,
1760 stObj->pt, dstLevel, /* dest texture, level */
1761 stImage->pt, /* src texture */
1762 stImage->face
1763 );
1764
1765 pipe_texture_reference(&stImage->pt, NULL);
1766 }
1767 else if (stImage->base.Data) {
1768 assert(stImage->base.Data != NULL);
1769
1770 /* More straightforward upload.
1771 */
1772
1773 st_teximage_flush_before_map(st, stObj->pt, stImage->face, dstLevel,
1774 PIPE_TRANSFER_WRITE);
1775
1776
1777 st_texture_image_data(st,
1778 stObj->pt,
1779 stImage->face,
1780 dstLevel,
1781 stImage->base.Data,
1782 stImage->base.RowStride *
1783 stObj->pt->block.size,
1784 stImage->base.RowStride *
1785 stImage->base.Height *
1786 stObj->pt->block.size);
1787 _mesa_align_free(stImage->base.Data);
1788 stImage->base.Data = NULL;
1789 }
1790
1791 pipe_texture_reference(&stImage->pt, stObj->pt);
1792 }
1793
1794
1795 /**
1796 * Called during state validation. When this function is finished,
1797 * the texture object should be ready for rendering.
1798 * \return GL_TRUE for success, GL_FALSE for failure (out of mem)
1799 */
1800 GLboolean
1801 st_finalize_texture(GLcontext *ctx,
1802 struct pipe_context *pipe,
1803 struct gl_texture_object *tObj,
1804 GLboolean *needFlush)
1805 {
1806 struct st_texture_object *stObj = st_texture_object(tObj);
1807 const GLuint nr_faces = (stObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
1808 GLuint cpp, face;
1809 struct st_texture_image *firstImage;
1810
1811 *needFlush = GL_FALSE;
1812
1813 /* We know/require this is true by now:
1814 */
1815 assert(stObj->base._Complete);
1816
1817 /* What levels must the texture include at a minimum?
1818 */
1819 calculate_first_last_level(stObj);
1820 firstImage = st_texture_image(stObj->base.Image[0][stObj->base.BaseLevel]);
1821
1822 /* If both firstImage and stObj point to a texture which can contain
1823 * all active images, favour firstImage. Note that because of the
1824 * completeness requirement, we know that the image dimensions
1825 * will match.
1826 */
1827 if (firstImage->pt &&
1828 firstImage->pt != stObj->pt &&
1829 firstImage->pt->last_level >= stObj->lastLevel) {
1830 pipe_texture_reference(&stObj->pt, firstImage->pt);
1831 }
1832
1833 /* FIXME: determine format block instead of cpp */
1834 if (firstImage->base.IsCompressed) {
1835 cpp = compressed_num_bytes(firstImage->base.TexFormat->MesaFormat);
1836 }
1837 else {
1838 cpp = firstImage->base.TexFormat->TexelBytes;
1839 }
1840
1841 /* If we already have a gallium texture, check that it matches the texture
1842 * object's format, target, size, num_levels, etc.
1843 */
1844 if (stObj->pt) {
1845 const enum pipe_format fmt =
1846 st_mesa_format_to_pipe_format(firstImage->base.TexFormat->MesaFormat);
1847 if (stObj->pt->target != gl_target_to_pipe(stObj->base.Target) ||
1848 stObj->pt->format != fmt ||
1849 stObj->pt->last_level < stObj->lastLevel ||
1850 stObj->pt->width[0] != firstImage->base.Width2 ||
1851 stObj->pt->height[0] != firstImage->base.Height2 ||
1852 stObj->pt->depth[0] != firstImage->base.Depth2 ||
1853 /* Nominal bytes per pixel: */
1854 stObj->pt->block.size / stObj->pt->block.width != cpp)
1855 {
1856 pipe_texture_reference(&stObj->pt, NULL);
1857 ctx->st->dirty.st |= ST_NEW_FRAMEBUFFER;
1858 }
1859 }
1860
1861 /* May need to create a new gallium texture:
1862 */
1863 if (!stObj->pt) {
1864 const enum pipe_format fmt =
1865 st_mesa_format_to_pipe_format(firstImage->base.TexFormat->MesaFormat);
1866 GLuint usage = default_usage(fmt);
1867
1868 stObj->pt = st_texture_create(ctx->st,
1869 gl_target_to_pipe(stObj->base.Target),
1870 fmt,
1871 stObj->lastLevel,
1872 firstImage->base.Width2,
1873 firstImage->base.Height2,
1874 firstImage->base.Depth2,
1875 usage);
1876
1877 if (!stObj->pt) {
1878 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
1879 return GL_FALSE;
1880 }
1881 }
1882
1883 /* Pull in any images not in the object's texture:
1884 */
1885 for (face = 0; face < nr_faces; face++) {
1886 GLuint level;
1887 for (level = 0; level <= stObj->lastLevel; level++) {
1888 struct st_texture_image *stImage =
1889 st_texture_image(stObj->base.Image[face][stObj->base.BaseLevel + level]);
1890
1891 /* Need to import images in main memory or held in other textures.
1892 */
1893 if (stImage && stObj->pt != stImage->pt) {
1894 copy_image_data_to_texture(ctx->st, stObj, level, stImage);
1895 *needFlush = GL_TRUE;
1896 }
1897 }
1898 }
1899
1900 return GL_TRUE;
1901 }
1902
1903
1904 /**
1905 * Returns pointer to a default/dummy texture.
1906 * This is typically used when the current shader has tex/sample instructions
1907 * but the user has not provided a (any) texture(s).
1908 */
1909 struct gl_texture_object *
1910 st_get_default_texture(struct st_context *st)
1911 {
1912 if (!st->default_texture) {
1913 static const GLenum target = GL_TEXTURE_2D;
1914 GLubyte pixels[16][16][4];
1915 struct gl_texture_object *texObj;
1916 struct gl_texture_image *texImg;
1917 GLuint i, j;
1918
1919 /* The ARB_fragment_program spec says (0,0,0,1) should be returned
1920 * when attempting to sample incomplete textures.
1921 */
1922 for (i = 0; i < 16; i++) {
1923 for (j = 0; j < 16; j++) {
1924 pixels[i][j][0] = 0;
1925 pixels[i][j][1] = 0;
1926 pixels[i][j][2] = 0;
1927 pixels[i][j][3] = 255;
1928 }
1929 }
1930
1931 texObj = st->ctx->Driver.NewTextureObject(st->ctx, 0, target);
1932
1933 texImg = _mesa_get_tex_image(st->ctx, texObj, target, 0);
1934
1935 _mesa_init_teximage_fields(st->ctx, target, texImg,
1936 16, 16, 1, 0, /* w, h, d, border */
1937 GL_RGBA);
1938
1939 st_TexImage(st->ctx, 2, target,
1940 0, GL_RGBA, /* level, intformat */
1941 16, 16, 1, 0, /* w, h, d, border */
1942 GL_RGBA, GL_UNSIGNED_BYTE, pixels,
1943 &st->ctx->DefaultPacking,
1944 texObj, texImg,
1945 0, 0);
1946
1947 texObj->MinFilter = GL_NEAREST;
1948 texObj->MagFilter = GL_NEAREST;
1949 texObj->_Complete = GL_TRUE;
1950
1951 st->default_texture = texObj;
1952 }
1953 return st->default_texture;
1954 }
1955
1956
1957 void
1958 st_init_texture_functions(struct dd_function_table *functions)
1959 {
1960 functions->ChooseTextureFormat = st_ChooseTextureFormat;
1961 functions->TexImage1D = st_TexImage1D;
1962 functions->TexImage2D = st_TexImage2D;
1963 functions->TexImage3D = st_TexImage3D;
1964 functions->TexSubImage1D = st_TexSubImage1D;
1965 functions->TexSubImage2D = st_TexSubImage2D;
1966 functions->TexSubImage3D = st_TexSubImage3D;
1967 functions->CompressedTexSubImage1D = st_CompressedTexSubImage1D;
1968 functions->CompressedTexSubImage2D = st_CompressedTexSubImage2D;
1969 functions->CompressedTexSubImage3D = st_CompressedTexSubImage3D;
1970 functions->CopyTexImage1D = st_CopyTexImage1D;
1971 functions->CopyTexImage2D = st_CopyTexImage2D;
1972 functions->CopyTexSubImage1D = st_CopyTexSubImage1D;
1973 functions->CopyTexSubImage2D = st_CopyTexSubImage2D;
1974 functions->CopyTexSubImage3D = st_CopyTexSubImage3D;
1975 functions->GenerateMipmap = st_generate_mipmap;
1976
1977 functions->GetTexImage = st_GetTexImage;
1978
1979 /* compressed texture functions */
1980 functions->CompressedTexImage2D = st_CompressedTexImage2D;
1981 functions->GetCompressedTexImage = st_GetCompressedTexImage;
1982 functions->CompressedTextureSize = _mesa_compressed_texture_size;
1983
1984 functions->NewTextureObject = st_NewTextureObject;
1985 functions->NewTextureImage = st_NewTextureImage;
1986 functions->DeleteTexture = st_DeleteTextureObject;
1987 functions->FreeTexImageData = st_FreeTextureImageData;
1988 functions->UpdateTexturePalette = 0;
1989
1990 functions->TextureMemCpy = do_memcpy;
1991
1992 /* XXX Temporary until we can query pipe's texture sizes */
1993 functions->TestProxyTexImage = _mesa_test_proxy_teximage;
1994 }