2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Texture image-related functions.
33 #include "bufferobj.h"
37 #include "framebuffer.h"
42 #include "mfeatures.h"
44 #include "texcompress.h"
50 #include "glformats.h"
54 * State changes which we care about for glCopyTex[Sub]Image() calls.
55 * In particular, we care about pixel transfer state and buffer state
56 * (such as glReadBuffer to make sure we read from the right renderbuffer).
58 #define NEW_COPY_TEX_STATE (_NEW_BUFFERS | _NEW_PIXEL)
63 * Return the simple base format for a given internal texture format.
64 * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
66 * \param ctx GL context.
67 * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
69 * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
70 * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
72 * This is the format which is used during texture application (i.e. the
73 * texture format and env mode determine the arithmetic used.
76 _mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
78 switch (internalFormat) {
93 case GL_LUMINANCE_ALPHA:
94 case GL_LUMINANCE4_ALPHA4:
95 case GL_LUMINANCE6_ALPHA2:
96 case GL_LUMINANCE8_ALPHA8:
97 case GL_LUMINANCE12_ALPHA4:
98 case GL_LUMINANCE12_ALPHA12:
99 case GL_LUMINANCE16_ALPHA16:
100 return GL_LUMINANCE_ALPHA;
131 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
133 if (_mesa_is_gles(ctx)) {
134 switch (internalFormat) {
142 if (ctx->Extensions.ARB_ES2_compatibility) {
143 switch (internalFormat) {
151 if (ctx->Extensions.ARB_depth_texture) {
152 switch (internalFormat) {
153 case GL_DEPTH_COMPONENT:
154 case GL_DEPTH_COMPONENT16:
155 case GL_DEPTH_COMPONENT24:
156 case GL_DEPTH_COMPONENT32:
157 return GL_DEPTH_COMPONENT;
163 switch (internalFormat) {
164 case GL_COMPRESSED_ALPHA:
166 case GL_COMPRESSED_LUMINANCE:
168 case GL_COMPRESSED_LUMINANCE_ALPHA:
169 return GL_LUMINANCE_ALPHA;
170 case GL_COMPRESSED_INTENSITY:
172 case GL_COMPRESSED_RGB:
174 case GL_COMPRESSED_RGBA:
180 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
181 switch (internalFormat) {
182 case GL_COMPRESSED_RGB_FXT1_3DFX:
184 case GL_COMPRESSED_RGBA_FXT1_3DFX:
191 if (ctx->Extensions.EXT_texture_compression_s3tc) {
192 switch (internalFormat) {
193 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
195 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
196 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
197 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
204 if (ctx->Extensions.S3_s3tc) {
205 switch (internalFormat) {
217 if (ctx->Extensions.MESA_ycbcr_texture) {
218 if (internalFormat == GL_YCBCR_MESA)
219 return GL_YCBCR_MESA;
222 if (ctx->Extensions.ARB_texture_float) {
223 switch (internalFormat) {
224 case GL_ALPHA16F_ARB:
225 case GL_ALPHA32F_ARB:
233 case GL_INTENSITY16F_ARB:
234 case GL_INTENSITY32F_ARB:
236 case GL_LUMINANCE16F_ARB:
237 case GL_LUMINANCE32F_ARB:
239 case GL_LUMINANCE_ALPHA16F_ARB:
240 case GL_LUMINANCE_ALPHA32F_ARB:
241 return GL_LUMINANCE_ALPHA;
247 if (ctx->Extensions.ATI_envmap_bumpmap) {
248 switch (internalFormat) {
257 if (ctx->Extensions.EXT_texture_snorm) {
258 switch (internalFormat) {
273 case GL_RGBA16_SNORM:
276 case GL_ALPHA8_SNORM:
277 case GL_ALPHA16_SNORM:
279 case GL_LUMINANCE_SNORM:
280 case GL_LUMINANCE8_SNORM:
281 case GL_LUMINANCE16_SNORM:
283 case GL_LUMINANCE_ALPHA_SNORM:
284 case GL_LUMINANCE8_ALPHA8_SNORM:
285 case GL_LUMINANCE16_ALPHA16_SNORM:
286 return GL_LUMINANCE_ALPHA;
287 case GL_INTENSITY_SNORM:
288 case GL_INTENSITY8_SNORM:
289 case GL_INTENSITY16_SNORM:
296 if (ctx->Extensions.EXT_packed_depth_stencil) {
297 switch (internalFormat) {
298 case GL_DEPTH_STENCIL_EXT:
299 case GL_DEPTH24_STENCIL8_EXT:
300 return GL_DEPTH_STENCIL_EXT;
306 #if FEATURE_EXT_texture_sRGB
307 if (ctx->Extensions.EXT_texture_sRGB) {
308 switch (internalFormat) {
311 case GL_COMPRESSED_SRGB_EXT:
312 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
314 case GL_SRGB_ALPHA_EXT:
315 case GL_SRGB8_ALPHA8_EXT:
316 case GL_COMPRESSED_SRGB_ALPHA_EXT:
317 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
318 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
319 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
321 case GL_SLUMINANCE_ALPHA_EXT:
322 case GL_SLUMINANCE8_ALPHA8_EXT:
323 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
324 return GL_LUMINANCE_ALPHA;
325 case GL_SLUMINANCE_EXT:
326 case GL_SLUMINANCE8_EXT:
327 case GL_COMPRESSED_SLUMINANCE_EXT:
333 #endif /* FEATURE_EXT_texture_sRGB */
335 if (ctx->Version >= 30 ||
336 ctx->Extensions.EXT_texture_integer) {
337 switch (internalFormat) {
339 case GL_RGBA16UI_EXT:
340 case GL_RGBA32UI_EXT:
356 if (ctx->Extensions.EXT_texture_integer) {
357 switch (internalFormat) {
358 case GL_ALPHA8UI_EXT:
359 case GL_ALPHA16UI_EXT:
360 case GL_ALPHA32UI_EXT:
362 case GL_ALPHA16I_EXT:
363 case GL_ALPHA32I_EXT:
365 case GL_INTENSITY8UI_EXT:
366 case GL_INTENSITY16UI_EXT:
367 case GL_INTENSITY32UI_EXT:
368 case GL_INTENSITY8I_EXT:
369 case GL_INTENSITY16I_EXT:
370 case GL_INTENSITY32I_EXT:
372 case GL_LUMINANCE8UI_EXT:
373 case GL_LUMINANCE16UI_EXT:
374 case GL_LUMINANCE32UI_EXT:
375 case GL_LUMINANCE8I_EXT:
376 case GL_LUMINANCE16I_EXT:
377 case GL_LUMINANCE32I_EXT:
379 case GL_LUMINANCE_ALPHA8UI_EXT:
380 case GL_LUMINANCE_ALPHA16UI_EXT:
381 case GL_LUMINANCE_ALPHA32UI_EXT:
382 case GL_LUMINANCE_ALPHA8I_EXT:
383 case GL_LUMINANCE_ALPHA16I_EXT:
384 case GL_LUMINANCE_ALPHA32I_EXT:
385 return GL_LUMINANCE_ALPHA;
391 if (ctx->Extensions.ARB_texture_rg) {
392 switch (internalFormat) {
394 /* R16F depends on both ARB_half_float_pixel and ARB_texture_float.
396 if (!ctx->Extensions.ARB_half_float_pixel)
400 if (!ctx->Extensions.ARB_texture_float)
409 if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer)
415 case GL_COMPRESSED_RED:
419 /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float.
421 if (!ctx->Extensions.ARB_half_float_pixel)
425 if (!ctx->Extensions.ARB_texture_float)
434 if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer)
440 case GL_COMPRESSED_RG:
447 if (ctx->Extensions.EXT_texture_shared_exponent) {
448 switch (internalFormat) {
456 if (ctx->Extensions.EXT_packed_float) {
457 switch (internalFormat) {
458 case GL_R11F_G11F_B10F_EXT:
465 if (ctx->Extensions.ARB_depth_buffer_float) {
466 switch (internalFormat) {
467 case GL_DEPTH_COMPONENT32F:
468 return GL_DEPTH_COMPONENT;
469 case GL_DEPTH32F_STENCIL8:
470 return GL_DEPTH_STENCIL;
476 if (ctx->Extensions.ARB_texture_compression_rgtc) {
477 switch (internalFormat) {
478 case GL_COMPRESSED_RED_RGTC1:
479 case GL_COMPRESSED_SIGNED_RED_RGTC1:
481 case GL_COMPRESSED_RG_RGTC2:
482 case GL_COMPRESSED_SIGNED_RG_RGTC2:
489 if (ctx->Extensions.EXT_texture_compression_latc) {
490 switch (internalFormat) {
491 case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
492 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
494 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
495 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
496 return GL_LUMINANCE_ALPHA;
502 if (ctx->Extensions.ATI_texture_compression_3dc) {
503 switch (internalFormat) {
504 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
505 return GL_LUMINANCE_ALPHA;
511 if (ctx->Extensions.OES_compressed_ETC1_RGB8_texture) {
512 switch (internalFormat) {
513 case GL_ETC1_RGB8_OES:
520 if (ctx->API == API_OPENGLES) {
521 switch (internalFormat) {
522 case GL_PALETTE4_RGB8_OES:
523 case GL_PALETTE4_R5_G6_B5_OES:
524 case GL_PALETTE8_RGB8_OES:
525 case GL_PALETTE8_R5_G6_B5_OES:
527 case GL_PALETTE4_RGBA8_OES:
528 case GL_PALETTE8_RGB5_A1_OES:
529 case GL_PALETTE4_RGBA4_OES:
530 case GL_PALETTE4_RGB5_A1_OES:
531 case GL_PALETTE8_RGBA8_OES:
532 case GL_PALETTE8_RGBA4_OES:
539 return -1; /* error */
544 * Is the given texture format a generic compressed format?
547 is_generic_compressed_format(GLenum format)
550 case GL_COMPRESSED_RED:
551 case GL_COMPRESSED_RG:
552 case GL_COMPRESSED_RGB:
553 case GL_COMPRESSED_RGBA:
554 case GL_COMPRESSED_ALPHA:
555 case GL_COMPRESSED_LUMINANCE:
556 case GL_COMPRESSED_LUMINANCE_ALPHA:
557 case GL_COMPRESSED_INTENSITY:
558 case GL_COMPRESSED_SRGB:
559 case GL_COMPRESSED_SRGB_ALPHA:
560 case GL_COMPRESSED_SLUMINANCE:
561 case GL_COMPRESSED_SLUMINANCE_ALPHA:
570 * For cube map faces, return a face index in [0,5].
571 * For other targets return 0;
574 _mesa_tex_target_to_face(GLenum target)
576 if (_mesa_is_cube_face(target))
577 return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
585 * Install gl_texture_image in a gl_texture_object according to the target
586 * and level parameters.
588 * \param tObj texture object.
589 * \param target texture target.
590 * \param level image level.
591 * \param texImage texture image.
594 set_tex_image(struct gl_texture_object *tObj,
595 GLenum target, GLint level,
596 struct gl_texture_image *texImage)
598 const GLuint face = _mesa_tex_target_to_face(target);
602 if (target == GL_TEXTURE_RECTANGLE_NV || target == GL_TEXTURE_EXTERNAL_OES)
605 tObj->Image[face][level] = texImage;
607 /* Set the 'back' pointer */
608 texImage->TexObject = tObj;
609 texImage->Level = level;
610 texImage->Face = face;
615 * Allocate a texture image structure.
617 * Called via ctx->Driver.NewTextureImage() unless overriden by a device
620 * \return a pointer to gl_texture_image struct with all fields initialized to
623 struct gl_texture_image *
624 _mesa_new_texture_image( struct gl_context *ctx )
627 return CALLOC_STRUCT(gl_texture_image);
632 * Free a gl_texture_image and associated data.
633 * This function is a fallback called via ctx->Driver.DeleteTextureImage().
635 * \param texImage texture image.
637 * Free the texture image structure and the associated image data.
640 _mesa_delete_texture_image(struct gl_context *ctx,
641 struct gl_texture_image *texImage)
643 /* Free texImage->Data and/or any other driver-specific texture
646 ASSERT(ctx->Driver.FreeTextureImageBuffer);
647 ctx->Driver.FreeTextureImageBuffer( ctx, texImage );
653 * Test if a target is a proxy target.
655 * \param target texture target.
657 * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise.
660 _mesa_is_proxy_texture(GLenum target)
663 * NUM_TEXTURE_TARGETS should match number of terms below, except there's no
664 * proxy for GL_TEXTURE_BUFFER and GL_TEXTURE_EXTERNAL_OES.
666 assert(NUM_TEXTURE_TARGETS == 7 + 2);
668 return (target == GL_PROXY_TEXTURE_1D ||
669 target == GL_PROXY_TEXTURE_2D ||
670 target == GL_PROXY_TEXTURE_3D ||
671 target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||
672 target == GL_PROXY_TEXTURE_RECTANGLE_NV ||
673 target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||
674 target == GL_PROXY_TEXTURE_2D_ARRAY_EXT);
679 * Return the proxy target which corresponds to the given texture target
682 get_proxy_target(GLenum target)
686 case GL_PROXY_TEXTURE_1D:
687 return GL_PROXY_TEXTURE_1D;
689 case GL_PROXY_TEXTURE_2D:
690 return GL_PROXY_TEXTURE_2D;
692 case GL_PROXY_TEXTURE_3D:
693 return GL_PROXY_TEXTURE_3D;
694 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
695 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
696 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
697 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
698 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
699 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
700 case GL_TEXTURE_CUBE_MAP_ARB:
701 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
702 return GL_PROXY_TEXTURE_CUBE_MAP_ARB;
703 case GL_TEXTURE_RECTANGLE_NV:
704 case GL_PROXY_TEXTURE_RECTANGLE_NV:
705 return GL_PROXY_TEXTURE_RECTANGLE_NV;
706 case GL_TEXTURE_1D_ARRAY_EXT:
707 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
708 return GL_PROXY_TEXTURE_1D_ARRAY_EXT;
709 case GL_TEXTURE_2D_ARRAY_EXT:
710 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
711 return GL_PROXY_TEXTURE_2D_ARRAY_EXT;
713 _mesa_problem(NULL, "unexpected target in get_proxy_target()");
720 * Get the texture object that corresponds to the target of the given
721 * texture unit. The target should have already been checked for validity.
723 * \param ctx GL context.
724 * \param texUnit texture unit.
725 * \param target texture target.
727 * \return pointer to the texture object on success, or NULL on failure.
729 struct gl_texture_object *
730 _mesa_select_tex_object(struct gl_context *ctx,
731 const struct gl_texture_unit *texUnit,
734 const GLboolean arrayTex = (ctx->Extensions.MESA_texture_array ||
735 ctx->Extensions.EXT_texture_array);
739 return texUnit->CurrentTex[TEXTURE_1D_INDEX];
740 case GL_PROXY_TEXTURE_1D:
741 return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX];
743 return texUnit->CurrentTex[TEXTURE_2D_INDEX];
744 case GL_PROXY_TEXTURE_2D:
745 return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX];
747 return texUnit->CurrentTex[TEXTURE_3D_INDEX];
748 case GL_PROXY_TEXTURE_3D:
749 return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX];
750 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
751 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
752 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
753 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
754 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
755 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
756 case GL_TEXTURE_CUBE_MAP_ARB:
757 return ctx->Extensions.ARB_texture_cube_map
758 ? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL;
759 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
760 return ctx->Extensions.ARB_texture_cube_map
761 ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL;
762 case GL_TEXTURE_RECTANGLE_NV:
763 return ctx->Extensions.NV_texture_rectangle
764 ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL;
765 case GL_PROXY_TEXTURE_RECTANGLE_NV:
766 return ctx->Extensions.NV_texture_rectangle
767 ? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL;
768 case GL_TEXTURE_1D_ARRAY_EXT:
769 return arrayTex ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
770 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
771 return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
772 case GL_TEXTURE_2D_ARRAY_EXT:
773 return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
774 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
775 return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
776 case GL_TEXTURE_BUFFER:
777 return ctx->Extensions.ARB_texture_buffer_object
778 ? texUnit->CurrentTex[TEXTURE_BUFFER_INDEX] : NULL;
779 case GL_TEXTURE_EXTERNAL_OES:
780 return ctx->Extensions.OES_EGL_image_external
781 ? texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX] : NULL;
783 _mesa_problem(NULL, "bad target in _mesa_select_tex_object()");
790 * Return pointer to texture object for given target on current texture unit.
792 struct gl_texture_object *
793 _mesa_get_current_tex_object(struct gl_context *ctx, GLenum target)
795 struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
796 return _mesa_select_tex_object(ctx, texUnit, target);
801 * Get a texture image pointer from a texture object, given a texture
802 * target and mipmap level. The target and level parameters should
803 * have already been error-checked.
805 * \param ctx GL context.
806 * \param texObj texture unit.
807 * \param target texture target.
808 * \param level image level.
810 * \return pointer to the texture image structure, or NULL on failure.
812 struct gl_texture_image *
813 _mesa_select_tex_image(struct gl_context *ctx,
814 const struct gl_texture_object *texObj,
815 GLenum target, GLint level)
817 const GLuint face = _mesa_tex_target_to_face(target);
821 ASSERT(level < MAX_TEXTURE_LEVELS);
823 return texObj->Image[face][level];
828 * Like _mesa_select_tex_image() but if the image doesn't exist, allocate
829 * it and install it. Only return NULL if passed a bad parameter or run
832 struct gl_texture_image *
833 _mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj,
834 GLenum target, GLint level)
836 struct gl_texture_image *texImage;
841 texImage = _mesa_select_tex_image(ctx, texObj, target, level);
843 texImage = ctx->Driver.NewTextureImage(ctx);
845 _mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation");
849 set_tex_image(texObj, target, level, texImage);
857 * Return pointer to the specified proxy texture image.
858 * Note that proxy textures are per-context, not per-texture unit.
859 * \return pointer to texture image or NULL if invalid target, invalid
860 * level, or out of memory.
862 struct gl_texture_image *
863 _mesa_get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level)
865 struct gl_texture_image *texImage;
872 case GL_PROXY_TEXTURE_1D:
873 if (level >= ctx->Const.MaxTextureLevels)
875 texIndex = TEXTURE_1D_INDEX;
877 case GL_PROXY_TEXTURE_2D:
878 if (level >= ctx->Const.MaxTextureLevels)
880 texIndex = TEXTURE_2D_INDEX;
882 case GL_PROXY_TEXTURE_3D:
883 if (level >= ctx->Const.Max3DTextureLevels)
885 texIndex = TEXTURE_3D_INDEX;
887 case GL_PROXY_TEXTURE_CUBE_MAP:
888 if (level >= ctx->Const.MaxCubeTextureLevels)
890 texIndex = TEXTURE_CUBE_INDEX;
892 case GL_PROXY_TEXTURE_RECTANGLE_NV:
895 texIndex = TEXTURE_RECT_INDEX;
897 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
898 if (level >= ctx->Const.MaxTextureLevels)
900 texIndex = TEXTURE_1D_ARRAY_INDEX;
902 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
903 if (level >= ctx->Const.MaxTextureLevels)
905 texIndex = TEXTURE_2D_ARRAY_INDEX;
911 texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level];
913 texImage = ctx->Driver.NewTextureImage(ctx);
915 _mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");
918 ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage;
919 /* Set the 'back' pointer */
920 texImage->TexObject = ctx->Texture.ProxyTex[texIndex];
927 * Get the maximum number of allowed mipmap levels.
929 * \param ctx GL context.
930 * \param target texture target.
932 * \return the maximum number of allowed mipmap levels for the given
933 * texture target, or zero if passed a bad target.
938 _mesa_max_texture_levels(struct gl_context *ctx, GLenum target)
942 case GL_PROXY_TEXTURE_1D:
944 case GL_PROXY_TEXTURE_2D:
945 return ctx->Const.MaxTextureLevels;
947 case GL_PROXY_TEXTURE_3D:
948 return ctx->Const.Max3DTextureLevels;
949 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
950 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
951 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
952 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
953 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
954 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
955 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
956 return ctx->Extensions.ARB_texture_cube_map
957 ? ctx->Const.MaxCubeTextureLevels : 0;
958 case GL_TEXTURE_RECTANGLE_NV:
959 case GL_PROXY_TEXTURE_RECTANGLE_NV:
960 return ctx->Extensions.NV_texture_rectangle ? 1 : 0;
961 case GL_TEXTURE_1D_ARRAY_EXT:
962 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
963 case GL_TEXTURE_2D_ARRAY_EXT:
964 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
965 return (ctx->Extensions.MESA_texture_array ||
966 ctx->Extensions.EXT_texture_array)
967 ? ctx->Const.MaxTextureLevels : 0;
968 case GL_TEXTURE_BUFFER:
969 case GL_TEXTURE_EXTERNAL_OES:
972 return 0; /* bad target */
978 * Return number of dimensions per mipmap level for the given texture target.
981 _mesa_get_texture_dimensions(GLenum target)
985 case GL_PROXY_TEXTURE_1D:
988 case GL_TEXTURE_RECTANGLE:
989 case GL_TEXTURE_CUBE_MAP:
990 case GL_PROXY_TEXTURE_2D:
991 case GL_PROXY_TEXTURE_RECTANGLE:
992 case GL_PROXY_TEXTURE_CUBE_MAP:
993 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
994 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
995 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
996 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
997 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
998 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
999 case GL_TEXTURE_1D_ARRAY:
1000 case GL_PROXY_TEXTURE_1D_ARRAY:
1001 case GL_TEXTURE_EXTERNAL_OES:
1004 case GL_PROXY_TEXTURE_3D:
1005 case GL_TEXTURE_2D_ARRAY:
1006 case GL_PROXY_TEXTURE_2D_ARRAY:
1008 case GL_TEXTURE_BUFFER:
1011 _mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()",
1020 #if 000 /* not used anymore */
1022 * glTexImage[123]D can accept a NULL image pointer. In this case we
1023 * create a texture image with unspecified image contents per the OpenGL
1027 make_null_texture(GLint width, GLint height, GLint depth, GLenum format)
1029 const GLint components = _mesa_components_in_format(format);
1030 const GLint numPixels = width * height * depth;
1031 GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte));
1035 * Let's see if anyone finds this. If glTexImage2D() is called with
1036 * a NULL image pointer then load the texture image with something
1037 * interesting instead of leaving it indeterminate.
1040 static const char message[8][32] = {
1041 " X X XXXXX XXX X ",
1042 " XX XX X X X X X ",
1044 " X X XXXX XXX XXXXX ",
1047 " X X XXXXX XXX X X ",
1051 GLubyte *imgPtr = data;
1053 for (h = 0; h < depth; h++) {
1054 for (i = 0; i < height; i++) {
1055 GLint srcRow = 7 - (i % 8);
1056 for (j = 0; j < width; j++) {
1057 GLint srcCol = j % 32;
1058 GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70;
1059 for (k = 0; k < components; k++) {
1075 * Set the size and format-related fields of a gl_texture_image struct
1076 * to zero. This is used when a proxy texture test fails.
1079 clear_teximage_fields(struct gl_texture_image *img)
1082 img->_BaseFormat = 0;
1083 img->InternalFormat = 0;
1092 img->HeightLog2 = 0;
1094 img->TexFormat = MESA_FORMAT_NONE;
1099 * Initialize basic fields of the gl_texture_image struct.
1101 * \param ctx GL context.
1102 * \param img texture image structure to be initialized.
1103 * \param width image width.
1104 * \param height image height.
1105 * \param depth image depth.
1106 * \param border image border.
1107 * \param internalFormat internal format.
1108 * \param format the actual hardware format (one of MESA_FORMAT_*)
1110 * Fills in the fields of \p img with the given information.
1111 * Note: width, height and depth include the border.
1114 _mesa_init_teximage_fields(struct gl_context *ctx,
1115 struct gl_texture_image *img,
1116 GLsizei width, GLsizei height, GLsizei depth,
1117 GLint border, GLenum internalFormat,
1123 ASSERT(height >= 0);
1126 target = img->TexObject->Target;
1127 img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );
1128 ASSERT(img->_BaseFormat > 0);
1129 img->InternalFormat = internalFormat;
1130 img->Border = border;
1132 img->Height = height;
1135 img->Width2 = width - 2 * border; /* == 1 << img->WidthLog2; */
1136 img->WidthLog2 = _mesa_logbase2(img->Width2);
1140 case GL_TEXTURE_BUFFER:
1141 case GL_PROXY_TEXTURE_1D:
1146 img->HeightLog2 = 0;
1153 case GL_TEXTURE_1D_ARRAY:
1154 case GL_PROXY_TEXTURE_1D_ARRAY:
1155 img->Height2 = height; /* no border */
1156 img->HeightLog2 = 0; /* not used */
1164 case GL_TEXTURE_RECTANGLE:
1165 case GL_TEXTURE_CUBE_MAP:
1166 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1167 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1168 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1169 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1170 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1171 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1172 case GL_TEXTURE_EXTERNAL_OES:
1173 case GL_PROXY_TEXTURE_2D:
1174 case GL_PROXY_TEXTURE_RECTANGLE:
1175 case GL_PROXY_TEXTURE_CUBE_MAP:
1176 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
1177 img->HeightLog2 = _mesa_logbase2(img->Height2);
1184 case GL_TEXTURE_2D_ARRAY:
1185 case GL_PROXY_TEXTURE_2D_ARRAY:
1186 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
1187 img->HeightLog2 = _mesa_logbase2(img->Height2);
1188 img->Depth2 = depth; /* no border */
1189 img->DepthLog2 = 0; /* not used */
1192 case GL_PROXY_TEXTURE_3D:
1193 img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
1194 img->HeightLog2 = _mesa_logbase2(img->Height2);
1195 img->Depth2 = depth - 2 * border; /* == 1 << img->DepthLog2; */
1196 img->DepthLog2 = _mesa_logbase2(img->Depth2);
1199 _mesa_problem(NULL, "invalid target 0x%x in _mesa_init_teximage_fields()",
1203 img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2);
1204 img->TexFormat = format;
1209 * Free and clear fields of the gl_texture_image struct.
1211 * \param ctx GL context.
1212 * \param texImage texture image structure to be cleared.
1214 * After the call, \p texImage will have no data associated with it. Its
1215 * fields are cleared so that its parent object will test incomplete.
1218 _mesa_clear_texture_image(struct gl_context *ctx,
1219 struct gl_texture_image *texImage)
1221 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
1222 clear_teximage_fields(texImage);
1227 * This is the fallback for Driver.TestProxyTexImage(). Test the texture
1228 * level, width, height and depth against the ctx->Const limits for textures.
1230 * A hardware driver might override this function if, for example, the
1231 * max 3D texture size is 512x512x64 (i.e. not a cube).
1233 * Note that width, height, depth == 0 is not an error. However, a
1234 * texture with zero width/height/depth will be considered "incomplete"
1235 * and texturing will effectively be disabled.
1237 * \param target one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D,
1238 * GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV,
1239 * GL_PROXY_TEXTURE_CUBE_MAP_ARB.
1240 * \param level as passed to glTexImage
1241 * \param internalFormat as passed to glTexImage
1242 * \param format as passed to glTexImage
1243 * \param type as passed to glTexImage
1244 * \param width as passed to glTexImage
1245 * \param height as passed to glTexImage
1246 * \param depth as passed to glTexImage
1247 * \param border as passed to glTexImage
1248 * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable.
1251 _mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level,
1252 GLint internalFormat, GLenum format, GLenum type,
1253 GLint width, GLint height, GLint depth, GLint border)
1257 (void) internalFormat;
1262 case GL_PROXY_TEXTURE_1D:
1263 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
1264 if (width < 2 * border || width > 2 * border + maxSize)
1266 if (level >= ctx->Const.MaxTextureLevels)
1268 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1269 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1274 case GL_PROXY_TEXTURE_2D:
1275 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
1276 if (width < 2 * border || width > 2 * border + maxSize)
1278 if (height < 2 * border || height > 2 * border + maxSize)
1280 if (level >= ctx->Const.MaxTextureLevels)
1282 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1283 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1285 if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
1290 case GL_PROXY_TEXTURE_3D:
1291 maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
1292 if (width < 2 * border || width > 2 * border + maxSize)
1294 if (height < 2 * border || height > 2 * border + maxSize)
1296 if (depth < 2 * border || depth > 2 * border + maxSize)
1298 if (level >= ctx->Const.Max3DTextureLevels)
1300 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1301 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1303 if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
1305 if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border))
1310 case GL_PROXY_TEXTURE_RECTANGLE_NV:
1311 maxSize = ctx->Const.MaxTextureRectSize;
1312 if (width < 0 || width > maxSize)
1314 if (height < 0 || height > maxSize)
1320 case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
1321 maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);
1322 if (width < 2 * border || width > 2 * border + maxSize)
1324 if (height < 2 * border || height > 2 * border + maxSize)
1326 if (level >= ctx->Const.MaxCubeTextureLevels)
1328 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1329 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1331 if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
1336 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1337 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
1338 if (width < 2 * border || width > 2 * border + maxSize)
1340 if (height < 1 || height > ctx->Const.MaxArrayTextureLayers)
1342 if (level >= ctx->Const.MaxTextureLevels)
1344 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1345 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1350 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1351 maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
1352 if (width < 2 * border || width > 2 * border + maxSize)
1354 if (height < 2 * border || height > 2 * border + maxSize)
1356 if (depth < 1 || depth > ctx->Const.MaxArrayTextureLayers)
1358 if (level >= ctx->Const.MaxTextureLevels)
1360 if (!ctx->Extensions.ARB_texture_non_power_of_two) {
1361 if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
1363 if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
1369 _mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage");
1376 * Check if the memory used by the texture would exceed the driver's limit.
1377 * This lets us support a max 3D texture size of 8K (for example) but
1378 * prevents allocating a full 8K x 8K x 8K texture.
1379 * XXX this could be rolled into the proxy texture size test (above) but
1380 * we don't have the actual texture internal format at that point.
1383 legal_texture_size(struct gl_context *ctx, gl_format format,
1384 GLint width, GLint height, GLint depth)
1386 uint64_t bytes = _mesa_format_image_size64(format, width, height, depth);
1387 uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */
1388 return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes;
1393 * Return true if the format is only valid for glCompressedTexImage.
1396 compressedteximage_only_format(const struct gl_context *ctx, GLenum format)
1399 case GL_ETC1_RGB8_OES:
1408 * Helper function to determine whether a target and specific compression
1409 * format are supported.
1412 target_can_be_compressed(const struct gl_context *ctx, GLenum target,
1415 (void) intFormat; /* not used yet */
1419 case GL_PROXY_TEXTURE_2D:
1420 return GL_TRUE; /* true for any compressed format so far */
1421 case GL_PROXY_TEXTURE_CUBE_MAP:
1422 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1423 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1424 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1425 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1426 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1427 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1428 return ctx->Extensions.ARB_texture_cube_map;
1429 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1430 case GL_TEXTURE_2D_ARRAY_EXT:
1431 return (ctx->Extensions.MESA_texture_array ||
1432 ctx->Extensions.EXT_texture_array);
1440 * Check if the given texture target value is legal for a
1441 * glTexImage1/2/3D call.
1444 legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target)
1450 case GL_PROXY_TEXTURE_1D:
1458 case GL_PROXY_TEXTURE_2D:
1460 case GL_PROXY_TEXTURE_CUBE_MAP:
1461 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1462 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1463 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1464 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1465 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1466 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1467 return ctx->Extensions.ARB_texture_cube_map;
1468 case GL_TEXTURE_RECTANGLE_NV:
1469 case GL_PROXY_TEXTURE_RECTANGLE_NV:
1470 return ctx->Extensions.NV_texture_rectangle;
1471 case GL_TEXTURE_1D_ARRAY_EXT:
1472 case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
1473 return (ctx->Extensions.MESA_texture_array ||
1474 ctx->Extensions.EXT_texture_array);
1481 case GL_PROXY_TEXTURE_3D:
1483 case GL_TEXTURE_2D_ARRAY_EXT:
1484 case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
1485 return (ctx->Extensions.MESA_texture_array ||
1486 ctx->Extensions.EXT_texture_array);
1491 _mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims);
1498 * Check if the given texture target value is legal for a
1499 * glTexSubImage, glCopyTexSubImage or glCopyTexImage call.
1500 * The difference compared to legal_teximage_target() above is that
1501 * proxy targets are not supported.
1504 legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target)
1508 return target == GL_TEXTURE_1D;
1513 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1514 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1515 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1516 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1517 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1518 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1519 return ctx->Extensions.ARB_texture_cube_map;
1520 case GL_TEXTURE_RECTANGLE_NV:
1521 return ctx->Extensions.NV_texture_rectangle;
1522 case GL_TEXTURE_1D_ARRAY_EXT:
1523 return (ctx->Extensions.MESA_texture_array ||
1524 ctx->Extensions.EXT_texture_array);
1532 case GL_TEXTURE_2D_ARRAY_EXT:
1533 return (ctx->Extensions.MESA_texture_array ||
1534 ctx->Extensions.EXT_texture_array);
1539 _mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()",
1547 * Helper function to determine if a texture object is mutable (in terms
1548 * of GL_ARB_texture_storage).
1551 mutable_tex_object(struct gl_context *ctx, GLenum target)
1553 if (ctx->Extensions.ARB_texture_storage) {
1554 struct gl_texture_object *texObj =
1555 _mesa_get_current_tex_object(ctx, target);
1556 return !texObj->Immutable;
1564 * Test the glTexImage[123]D() parameters for errors.
1566 * \param ctx GL context.
1567 * \param dimensions texture image dimensions (must be 1, 2 or 3).
1568 * \param target texture target given by the user.
1569 * \param level image level given by the user.
1570 * \param internalFormat internal format given by the user.
1571 * \param format pixel data format given by the user.
1572 * \param type pixel data type given by the user.
1573 * \param width image width given by the user.
1574 * \param height image height given by the user.
1575 * \param depth image depth given by the user.
1576 * \param border image border given by the user.
1578 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
1580 * Verifies each of the parameters against the constants specified in
1581 * __struct gl_contextRec::Const and the supported extensions, and according
1582 * to the OpenGL specification.
1585 texture_error_check( struct gl_context *ctx,
1586 GLuint dimensions, GLenum target,
1587 GLint level, GLint internalFormat,
1588 GLenum format, GLenum type,
1589 GLint width, GLint height,
1590 GLint depth, GLint border )
1592 const GLenum proxyTarget = get_proxy_target(target);
1593 const GLboolean isProxy = target == proxyTarget;
1594 GLboolean sizeOK = GL_TRUE;
1595 GLboolean colorFormat;
1598 /* Even though there are no color-index textures, we still have to support
1599 * uploading color-index data and remapping it to RGB via the
1600 * GL_PIXEL_MAP_I_TO_[RGBA] tables.
1602 const GLboolean indexFormat = (format == GL_COLOR_INDEX);
1604 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
1605 if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
1607 _mesa_error(ctx, GL_INVALID_VALUE,
1608 "glTexImage%dD(level=%d)", dimensions, level);
1614 if (border < 0 || border > 1 ||
1615 ((target == GL_TEXTURE_RECTANGLE_NV ||
1616 target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
1618 _mesa_error(ctx, GL_INVALID_VALUE,
1619 "glTexImage%dD(border=%d)", dimensions, border);
1624 if (width < 0 || height < 0 || depth < 0) {
1626 _mesa_error(ctx, GL_INVALID_VALUE,
1627 "glTexImage%dD(width, height or depth < 0)", dimensions);
1632 /* Do this simple check before calling the TestProxyTexImage() function */
1633 if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
1634 sizeOK = (width == height);
1638 * Use the proxy texture driver hook to see if the size/level/etc are
1641 sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
1642 internalFormat, format,
1643 type, width, height,
1647 _mesa_error(ctx, GL_INVALID_VALUE,
1648 "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)",
1649 dimensions, level, width, height, depth);
1654 /* Check internalFormat */
1655 if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
1657 _mesa_error(ctx, GL_INVALID_VALUE,
1658 "glTexImage%dD(internalFormat=%s)",
1659 dimensions, _mesa_lookup_enum_by_nr(internalFormat));
1664 /* Check incoming image format and type */
1665 err = _mesa_error_check_format_and_type(ctx, format, type);
1666 if (err != GL_NO_ERROR) {
1668 _mesa_error(ctx, err,
1669 "glTexImage%dD(incompatible format 0x%x, type 0x%x)",
1670 dimensions, format, type);
1675 /* make sure internal format and format basically agree */
1676 colorFormat = _mesa_is_color_format(format);
1677 if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) ||
1678 (_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) ||
1679 (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) ||
1680 (_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) ||
1681 (_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) {
1683 _mesa_error(ctx, GL_INVALID_OPERATION,
1684 "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)",
1685 dimensions, internalFormat, format);
1689 /* additional checks for ycbcr textures */
1690 if (internalFormat == GL_YCBCR_MESA) {
1691 ASSERT(ctx->Extensions.MESA_ycbcr_texture);
1692 if (type != GL_UNSIGNED_SHORT_8_8_MESA &&
1693 type != GL_UNSIGNED_SHORT_8_8_REV_MESA) {
1695 _mesa_snprintf(message, sizeof(message),
1696 "glTexImage%dD(format/type YCBCR mismatch", dimensions);
1697 _mesa_error(ctx, GL_INVALID_ENUM, "%s", message);
1698 return GL_TRUE; /* error */
1700 if (target != GL_TEXTURE_2D &&
1701 target != GL_PROXY_TEXTURE_2D &&
1702 target != GL_TEXTURE_RECTANGLE_NV &&
1703 target != GL_PROXY_TEXTURE_RECTANGLE_NV) {
1705 _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage(target)");
1711 _mesa_snprintf(message, sizeof(message),
1712 "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)",
1713 dimensions, border);
1714 _mesa_error(ctx, GL_INVALID_VALUE, "%s", message);
1720 /* additional checks for depth textures */
1721 if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) {
1722 /* Only 1D, 2D, rect, array and cube textures supported, not 3D
1723 * Cubemaps are only supported for GL version > 3.0 or with EXT_gpu_shader4 */
1724 if (target != GL_TEXTURE_1D &&
1725 target != GL_PROXY_TEXTURE_1D &&
1726 target != GL_TEXTURE_2D &&
1727 target != GL_PROXY_TEXTURE_2D &&
1728 target != GL_TEXTURE_1D_ARRAY &&
1729 target != GL_PROXY_TEXTURE_1D_ARRAY &&
1730 target != GL_TEXTURE_2D_ARRAY &&
1731 target != GL_PROXY_TEXTURE_2D_ARRAY &&
1732 target != GL_TEXTURE_RECTANGLE_ARB &&
1733 target != GL_PROXY_TEXTURE_RECTANGLE_ARB &&
1734 !((_mesa_is_cube_face(target) || target == GL_PROXY_TEXTURE_CUBE_MAP) &&
1735 (ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4))) {
1737 _mesa_error(ctx, GL_INVALID_ENUM,
1738 "glTexImage(target/internalFormat)");
1743 /* additional checks for compressed textures */
1744 if (_mesa_is_compressed_format(ctx, internalFormat) ||
1745 is_generic_compressed_format(internalFormat)) {
1746 if (!target_can_be_compressed(ctx, target, internalFormat)) {
1748 _mesa_error(ctx, GL_INVALID_ENUM,
1749 "glTexImage%dD(target)", dimensions);
1752 if (compressedteximage_only_format(ctx, internalFormat)) {
1753 _mesa_error(ctx, GL_INVALID_OPERATION,
1754 "glTexImage%dD(no compression for format)", dimensions);
1759 _mesa_error(ctx, GL_INVALID_OPERATION,
1760 "glTexImage%dD(border!=0)", dimensions);
1766 /* additional checks for integer textures */
1767 if ((ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) &&
1768 (_mesa_is_enum_format_integer(format) !=
1769 _mesa_is_enum_format_integer(internalFormat))) {
1771 _mesa_error(ctx, GL_INVALID_OPERATION,
1772 "glTexImage%dD(integer/non-integer format mismatch)",
1778 if (!mutable_tex_object(ctx, target)) {
1779 _mesa_error(ctx, GL_INVALID_OPERATION,
1780 "glTexImage%dD(immutable texture)", dimensions);
1784 /* if we get here, the parameters are OK */
1790 * Test glTexSubImage[123]D() parameters for errors.
1792 * \param ctx GL context.
1793 * \param dimensions texture image dimensions (must be 1, 2 or 3).
1794 * \param target texture target given by the user.
1795 * \param level image level given by the user.
1796 * \param xoffset sub-image x offset given by the user.
1797 * \param yoffset sub-image y offset given by the user.
1798 * \param zoffset sub-image z offset given by the user.
1799 * \param format pixel data format given by the user.
1800 * \param type pixel data type given by the user.
1801 * \param width image width given by the user.
1802 * \param height image height given by the user.
1803 * \param depth image depth given by the user.
1805 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
1807 * Verifies each of the parameters against the constants specified in
1808 * __struct gl_contextRec::Const and the supported extensions, and according
1809 * to the OpenGL specification.
1812 subtexture_error_check( struct gl_context *ctx, GLuint dimensions,
1813 GLenum target, GLint level,
1814 GLint xoffset, GLint yoffset, GLint zoffset,
1815 GLint width, GLint height, GLint depth,
1816 GLenum format, GLenum type )
1820 /* Basic level check */
1821 if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
1822 _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level);
1826 /* Check for negative sizes */
1828 _mesa_error(ctx, GL_INVALID_VALUE,
1829 "glTexSubImage%dD(width=%d)", dimensions, width);
1832 if (height < 0 && dimensions > 1) {
1833 _mesa_error(ctx, GL_INVALID_VALUE,
1834 "glTexSubImage%dD(height=%d)", dimensions, height);
1837 if (depth < 0 && dimensions > 2) {
1838 _mesa_error(ctx, GL_INVALID_VALUE,
1839 "glTexSubImage%dD(depth=%d)", dimensions, depth);
1843 err = _mesa_error_check_format_and_type(ctx, format, type);
1844 if (err != GL_NO_ERROR) {
1845 _mesa_error(ctx, err,
1846 "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",
1847 dimensions, format, type);
1856 * Do second part of glTexSubImage which depends on the destination texture.
1857 * \return GL_TRUE if error recorded, GL_FALSE otherwise
1860 subtexture_error_check2( struct gl_context *ctx, GLuint dimensions,
1861 GLenum target, GLint level,
1862 GLint xoffset, GLint yoffset, GLint zoffset,
1863 GLint width, GLint height, GLint depth,
1864 GLenum format, GLenum type,
1865 const struct gl_texture_image *destTex )
1868 /* undefined image level */
1869 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions);
1873 if (xoffset < -((GLint)destTex->Border)) {
1874 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)",
1878 if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) {
1879 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)",
1883 if (dimensions > 1) {
1884 GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : destTex->Border;
1885 if (yoffset < -yBorder) {
1886 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)",
1890 if (yoffset + height > (GLint) destTex->Height + yBorder) {
1891 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)",
1896 if (dimensions > 2) {
1897 GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : destTex->Border;
1898 if (zoffset < -zBorder) {
1899 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)");
1902 if (zoffset + depth > (GLint) destTex->Depth + zBorder) {
1903 _mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)");
1908 if (_mesa_is_format_compressed(destTex->TexFormat)) {
1911 if (compressedteximage_only_format(ctx, destTex->InternalFormat)) {
1912 _mesa_error(ctx, GL_INVALID_OPERATION,
1913 "glTexSubImage%dD(no compression for format)", dimensions);
1917 /* do tests which depend on compression block size */
1918 _mesa_get_format_block_size(destTex->TexFormat, &bw, &bh);
1920 /* offset must be multiple of block size */
1921 if ((xoffset % bw != 0) || (yoffset % bh != 0)) {
1922 _mesa_error(ctx, GL_INVALID_OPERATION,
1923 "glTexSubImage%dD(xoffset = %d, yoffset = %d)",
1924 dimensions, xoffset, yoffset);
1927 /* size must be multiple of bw by bh or equal to whole texture size */
1928 if ((width % bw != 0) && (GLuint) width != destTex->Width) {
1929 _mesa_error(ctx, GL_INVALID_OPERATION,
1930 "glTexSubImage%dD(width = %d)", dimensions, width);
1933 if ((height % bh != 0) && (GLuint) height != destTex->Height) {
1934 _mesa_error(ctx, GL_INVALID_OPERATION,
1935 "glTexSubImage%dD(height = %d)", dimensions, height);
1940 if (ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) {
1941 /* both source and dest must be integer-valued, or neither */
1942 if (_mesa_is_format_integer_color(destTex->TexFormat) !=
1943 _mesa_is_enum_format_integer(format)) {
1944 _mesa_error(ctx, GL_INVALID_OPERATION,
1945 "glTexSubImage%dD(integer/non-integer format mismatch)",
1956 * Test glCopyTexImage[12]D() parameters for errors.
1958 * \param ctx GL context.
1959 * \param dimensions texture image dimensions (must be 1, 2 or 3).
1960 * \param target texture target given by the user.
1961 * \param level image level given by the user.
1962 * \param internalFormat internal format given by the user.
1963 * \param width image width given by the user.
1964 * \param height image height given by the user.
1965 * \param border texture border.
1967 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
1969 * Verifies each of the parameters against the constants specified in
1970 * __struct gl_contextRec::Const and the supported extensions, and according
1971 * to the OpenGL specification.
1974 copytexture_error_check( struct gl_context *ctx, GLuint dimensions,
1975 GLenum target, GLint level, GLint internalFormat,
1976 GLint width, GLint height, GLint border )
1978 const GLenum proxyTarget = get_proxy_target(target);
1979 const GLenum type = GL_FLOAT;
1984 if (!legal_texsubimage_target(ctx, dimensions, target)) {
1985 _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)",
1986 dimensions, _mesa_lookup_enum_by_nr(target));
1990 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
1991 if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
1992 _mesa_error(ctx, GL_INVALID_VALUE,
1993 "glCopyTexImage%dD(level=%d)", dimensions, level);
1997 /* Check that the source buffer is complete */
1998 if (_mesa_is_user_fbo(ctx->ReadBuffer)) {
1999 if (ctx->ReadBuffer->_Status == 0) {
2000 _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
2002 if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2003 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2004 "glCopyTexImage%dD(invalid readbuffer)", dimensions);
2008 if (ctx->ReadBuffer->Visual.samples > 0) {
2009 _mesa_error(ctx, GL_INVALID_OPERATION,
2010 "glCopyTexImage%dD(multisample FBO)",
2017 if (border < 0 || border > 1 ||
2018 ((target == GL_TEXTURE_RECTANGLE_NV ||
2019 target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
2023 baseFormat = _mesa_base_tex_format(ctx, internalFormat);
2024 if (baseFormat < 0) {
2025 _mesa_error(ctx, GL_INVALID_VALUE,
2026 "glCopyTexImage%dD(internalFormat)", dimensions);
2030 if (!_mesa_source_buffer_exists(ctx, baseFormat)) {
2031 _mesa_error(ctx, GL_INVALID_OPERATION,
2032 "glCopyTexImage%dD(missing readbuffer)", dimensions);
2036 /* From the EXT_texture_integer spec:
2038 * "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage*
2039 * if the texture internalformat is an integer format and the read color
2040 * buffer is not an integer format, or if the internalformat is not an
2041 * integer format and the read color buffer is an integer format."
2043 if (_mesa_is_color_format(internalFormat)) {
2044 struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
2046 if (_mesa_is_enum_format_integer(rb->InternalFormat) !=
2047 _mesa_is_enum_format_integer(internalFormat)) {
2048 _mesa_error(ctx, GL_INVALID_OPERATION,
2049 "glCopyTexImage%dD(integer vs non-integer)", dimensions);
2054 /* Do size, level checking */
2055 sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB)
2056 ? (width == height) : 1;
2058 sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
2059 internalFormat, baseFormat,
2060 type, width, height,
2064 if (dimensions == 1) {
2065 _mesa_error(ctx, GL_INVALID_VALUE,
2066 "glCopyTexImage1D(width=%d)", width);
2069 ASSERT(dimensions == 2);
2070 _mesa_error(ctx, GL_INVALID_VALUE,
2071 "glCopyTexImage2D(width=%d, height=%d)", width, height);
2076 if (_mesa_is_compressed_format(ctx, internalFormat) ||
2077 is_generic_compressed_format(internalFormat)) {
2078 if (!target_can_be_compressed(ctx, target, internalFormat)) {
2079 _mesa_error(ctx, GL_INVALID_ENUM,
2080 "glCopyTexImage%dD(target)", dimensions);
2083 if (compressedteximage_only_format(ctx, internalFormat)) {
2084 _mesa_error(ctx, GL_INVALID_OPERATION,
2085 "glCopyTexImage%dD(no compression for format)", dimensions);
2089 _mesa_error(ctx, GL_INVALID_OPERATION,
2090 "glCopyTexImage%dD(border!=0)", dimensions);
2095 if (!mutable_tex_object(ctx, target)) {
2096 _mesa_error(ctx, GL_INVALID_OPERATION,
2097 "glCopyTexImage%dD(immutable texture)", dimensions);
2101 /* if we get here, the parameters are OK */
2107 * Test glCopyTexSubImage[12]D() parameters for errors.
2108 * Note that this is the first part of error checking.
2109 * See also copytexsubimage_error_check2() below for the second part.
2111 * \param ctx GL context.
2112 * \param dimensions texture image dimensions (must be 1, 2 or 3).
2113 * \param target texture target given by the user.
2114 * \param level image level given by the user.
2116 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
2119 copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions,
2120 GLenum target, GLint level)
2122 /* Check that the source buffer is complete */
2123 if (_mesa_is_user_fbo(ctx->ReadBuffer)) {
2124 if (ctx->ReadBuffer->_Status == 0) {
2125 _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
2127 if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2128 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2129 "glCopyTexImage%dD(invalid readbuffer)", dimensions);
2133 if (ctx->ReadBuffer->Visual.samples > 0) {
2134 _mesa_error(ctx, GL_INVALID_OPERATION,
2135 "glCopyTexSubImage%dD(multisample FBO)",
2141 /* check target (proxies not allowed) */
2142 if (!legal_texsubimage_target(ctx, dimensions, target)) {
2143 _mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)",
2144 dimensions, _mesa_lookup_enum_by_nr(target));
2149 if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
2150 _mesa_error(ctx, GL_INVALID_VALUE,
2151 "glCopyTexSubImage%dD(level=%d)", dimensions, level);
2160 * Second part of error checking for glCopyTexSubImage[12]D().
2161 * \param xoffset sub-image x offset given by the user.
2162 * \param yoffset sub-image y offset given by the user.
2163 * \param zoffset sub-image z offset given by the user.
2164 * \param width image width given by the user.
2165 * \param height image height given by the user.
2168 copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions,
2169 GLenum target, GLint level,
2170 GLint xoffset, GLint yoffset, GLint zoffset,
2171 GLsizei width, GLsizei height,
2172 const struct gl_texture_image *teximage )
2174 /* check that dest tex image exists */
2176 _mesa_error(ctx, GL_INVALID_OPERATION,
2177 "glCopyTexSubImage%dD(undefined texture level: %d)",
2184 _mesa_error(ctx, GL_INVALID_VALUE,
2185 "glCopyTexSubImage%dD(width=%d)", dimensions, width);
2188 if (dimensions > 1 && height < 0) {
2189 _mesa_error(ctx, GL_INVALID_VALUE,
2190 "glCopyTexSubImage%dD(height=%d)", dimensions, height);
2194 /* check x/y offsets */
2195 if (xoffset < -((GLint)teximage->Border)) {
2196 _mesa_error(ctx, GL_INVALID_VALUE,
2197 "glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset);
2200 if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) {
2201 _mesa_error(ctx, GL_INVALID_VALUE,
2202 "glCopyTexSubImage%dD(xoffset+width)", dimensions);
2205 if (dimensions > 1) {
2206 GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : teximage->Border;
2207 if (yoffset < -yBorder) {
2208 _mesa_error(ctx, GL_INVALID_VALUE,
2209 "glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset);
2212 /* NOTE: we're adding the border here, not subtracting! */
2213 if (yoffset + height > (GLint) teximage->Height + yBorder) {
2214 _mesa_error(ctx, GL_INVALID_VALUE,
2215 "glCopyTexSubImage%dD(yoffset+height)", dimensions);
2220 /* check z offset */
2221 if (dimensions > 2) {
2222 GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : teximage->Border;
2223 if (zoffset < -zBorder) {
2224 _mesa_error(ctx, GL_INVALID_VALUE,
2225 "glCopyTexSubImage%dD(zoffset)", dimensions);
2228 if (zoffset > (GLint) teximage->Depth + zBorder) {
2229 _mesa_error(ctx, GL_INVALID_VALUE,
2230 "glCopyTexSubImage%dD(zoffset+depth)", dimensions);
2235 if (_mesa_is_format_compressed(teximage->TexFormat)) {
2236 if (compressedteximage_only_format(ctx, teximage->InternalFormat)) {
2237 _mesa_error(ctx, GL_INVALID_OPERATION,
2238 "glCopyTexSubImage%dD(no compression for format)", dimensions);
2241 /* offset must be multiple of 4 */
2242 if ((xoffset & 3) || (yoffset & 3)) {
2243 _mesa_error(ctx, GL_INVALID_VALUE,
2244 "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions);
2247 /* size must be multiple of 4 */
2248 if ((width & 3) != 0 && (GLuint) width != teximage->Width) {
2249 _mesa_error(ctx, GL_INVALID_VALUE,
2250 "glCopyTexSubImage%dD(width)", dimensions);
2253 if ((height & 3) != 0 && (GLuint) height != teximage->Height) {
2254 _mesa_error(ctx, GL_INVALID_VALUE,
2255 "glCopyTexSubImage%dD(height)", dimensions);
2260 if (teximage->InternalFormat == GL_YCBCR_MESA) {
2261 _mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D");
2265 if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {
2266 _mesa_error(ctx, GL_INVALID_OPERATION,
2267 "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)",
2268 dimensions, teximage->_BaseFormat);
2272 /* From the EXT_texture_integer spec:
2274 * "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage*
2275 * if the texture internalformat is an integer format and the read color
2276 * buffer is not an integer format, or if the internalformat is not an
2277 * integer format and the read color buffer is an integer format."
2279 if (_mesa_is_color_format(teximage->InternalFormat)) {
2280 struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
2282 if (_mesa_is_format_integer_color(rb->Format) !=
2283 _mesa_is_format_integer_color(teximage->TexFormat)) {
2284 _mesa_error(ctx, GL_INVALID_OPERATION,
2285 "glCopyTexImage%dD(integer vs non-integer)", dimensions);
2290 /* if we get here, the parameters are OK */
2295 /** Callback info for walking over FBO hash table */
2298 struct gl_context *ctx;
2299 struct gl_texture_object *texObj;
2305 * Check render to texture callback. Called from _mesa_HashWalk().
2308 check_rtt_cb(GLuint key, void *data, void *userData)
2310 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
2311 const struct cb_info *info = (struct cb_info *) userData;
2312 struct gl_context *ctx = info->ctx;
2313 const struct gl_texture_object *texObj = info->texObj;
2314 const GLuint level = info->level, face = info->face;
2316 /* If this is a user-created FBO */
2317 if (_mesa_is_user_fbo(fb)) {
2319 /* check if any of the FBO's attachments point to 'texObj' */
2320 for (i = 0; i < BUFFER_COUNT; i++) {
2321 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
2322 if (att->Type == GL_TEXTURE &&
2323 att->Texture == texObj &&
2324 att->TextureLevel == level &&
2325 att->CubeMapFace == face) {
2326 ASSERT(_mesa_get_attachment_teximage(att));
2327 /* Tell driver about the new renderbuffer texture */
2328 ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att);
2329 /* Mark fb status as indeterminate to force re-validation */
2338 * When a texture image is specified we have to check if it's bound to
2339 * any framebuffer objects (render to texture) in order to detect changes
2340 * in size or format since that effects FBO completeness.
2341 * Any FBOs rendering into the texture must be re-validated.
2344 _mesa_update_fbo_texture(struct gl_context *ctx,
2345 struct gl_texture_object *texObj,
2346 GLuint face, GLuint level)
2348 /* Only check this texture if it's been marked as RenderToTexture */
2349 if (texObj->_RenderToTexture) {
2350 struct cb_info info;
2352 info.texObj = texObj;
2355 _mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info);
2361 * If the texture object's GenerateMipmap flag is set and we've
2362 * changed the texture base level image, regenerate the rest of the
2363 * mipmap levels now.
2366 check_gen_mipmap(struct gl_context *ctx, GLenum target,
2367 struct gl_texture_object *texObj, GLint level)
2369 ASSERT(target != GL_TEXTURE_CUBE_MAP);
2370 if (texObj->GenerateMipmap &&
2371 level == texObj->BaseLevel &&
2372 level < texObj->MaxLevel) {
2373 ASSERT(ctx->Driver.GenerateMipmap);
2374 ctx->Driver.GenerateMipmap(ctx, target, texObj);
2379 /** Debug helper: override the user-requested internal format */
2381 override_internal_format(GLenum internalFormat, GLint width, GLint height)
2384 if (internalFormat == GL_RGBA16F_ARB ||
2385 internalFormat == GL_RGBA32F_ARB) {
2386 printf("Convert rgba float tex to int %d x %d\n", width, height);
2389 else if (internalFormat == GL_RGB16F_ARB ||
2390 internalFormat == GL_RGB32F_ARB) {
2391 printf("Convert rgb float tex to int %d x %d\n", width, height);
2394 else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB ||
2395 internalFormat == GL_LUMINANCE_ALPHA32F_ARB) {
2396 printf("Convert luminance float tex to int %d x %d\n", width, height);
2397 return GL_LUMINANCE_ALPHA;
2399 else if (internalFormat == GL_LUMINANCE16F_ARB ||
2400 internalFormat == GL_LUMINANCE32F_ARB) {
2401 printf("Convert luminance float tex to int %d x %d\n", width, height);
2402 return GL_LUMINANCE;
2404 else if (internalFormat == GL_ALPHA16F_ARB ||
2405 internalFormat == GL_ALPHA32F_ARB) {
2406 printf("Convert luminance float tex to int %d x %d\n", width, height);
2410 else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) {
2411 internalFormat = GL_RGBA;
2415 return internalFormat;
2418 return internalFormat;
2424 * Choose the actual hardware format for a texture image.
2425 * Try to use the same format as the previous image level when possible.
2426 * Otherwise, ask the driver for the best format.
2427 * It's important to try to choose a consistant format for all levels
2428 * for efficient texture memory layout/allocation. In particular, this
2429 * comes up during automatic mipmap generation.
2432 _mesa_choose_texture_format(struct gl_context *ctx,
2433 struct gl_texture_object *texObj,
2434 GLenum target, GLint level,
2435 GLenum internalFormat, GLenum format, GLenum type)
2439 /* see if we've already chosen a format for the previous level */
2441 struct gl_texture_image *prevImage =
2442 _mesa_select_tex_image(ctx, texObj, target, level - 1);
2443 /* See if the prev level is defined and has an internal format which
2444 * matches the new internal format.
2447 prevImage->Width > 0 &&
2448 prevImage->InternalFormat == internalFormat) {
2449 /* use the same format */
2450 ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE);
2451 return prevImage->TexFormat;
2455 /* choose format from scratch */
2456 f = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type);
2457 ASSERT(f != MESA_FORMAT_NONE);
2462 * Adjust pixel unpack params and image dimensions to strip off the
2463 * one-pixel texture border.
2465 * Gallium and intel don't support texture borders. They've seldem been used
2466 * and seldom been implemented correctly anyway.
2468 * \param unpackNew returns the new pixel unpack parameters
2471 strip_texture_border(GLenum target,
2472 GLint *width, GLint *height, GLint *depth,
2473 const struct gl_pixelstore_attrib *unpack,
2474 struct gl_pixelstore_attrib *unpackNew)
2480 *unpackNew = *unpack;
2482 if (unpackNew->RowLength == 0)
2483 unpackNew->RowLength = *width;
2485 if (unpackNew->ImageHeight == 0)
2486 unpackNew->ImageHeight = *height;
2488 assert(*width >= 3);
2489 unpackNew->SkipPixels++; /* skip the border */
2490 *width = *width - 2; /* reduce the width by two border pixels */
2492 /* The min height of a texture with a border is 3 */
2493 if (*height >= 3 && target != GL_TEXTURE_1D_ARRAY) {
2494 unpackNew->SkipRows++; /* skip the border */
2495 *height = *height - 2; /* reduce the height by two border pixels */
2498 if (*depth >= 3 && target != GL_TEXTURE_2D_ARRAY) {
2499 unpackNew->SkipImages++; /* skip the border */
2500 *depth = *depth - 2; /* reduce the depth by two border pixels */
2505 * Common code to implement all the glTexImage1D/2D/3D functions.
2508 teximage(struct gl_context *ctx, GLuint dims,
2509 GLenum target, GLint level, GLint internalFormat,
2510 GLsizei width, GLsizei height, GLsizei depth,
2511 GLint border, GLenum format, GLenum type,
2512 const GLvoid *pixels)
2515 struct gl_pixelstore_attrib unpack_no_border;
2516 const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
2518 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
2520 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
2521 _mesa_debug(ctx, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n",
2523 _mesa_lookup_enum_by_nr(target), level,
2524 _mesa_lookup_enum_by_nr(internalFormat),
2525 width, height, depth, border,
2526 _mesa_lookup_enum_by_nr(format),
2527 _mesa_lookup_enum_by_nr(type), pixels);
2529 internalFormat = override_internal_format(internalFormat, width, height);
2531 /* target error checking */
2532 if (!legal_teximage_target(ctx, dims, target)) {
2533 _mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uD(target=%s)",
2534 dims, _mesa_lookup_enum_by_nr(target));
2538 /* general error checking */
2539 error = texture_error_check(ctx, dims, target, level, internalFormat,
2540 format, type, width, height, depth, border);
2542 if (_mesa_is_proxy_texture(target)) {
2543 /* Proxy texture: just clear or set state depending on error checking */
2544 struct gl_texture_image *texImage =
2545 _mesa_get_proxy_tex_image(ctx, target, level);
2548 /* when error, clear all proxy texture image parameters */
2550 clear_teximage_fields(texImage);
2553 /* no error, set the tex image parameters */
2554 struct gl_texture_object *texObj =
2555 _mesa_get_current_tex_object(ctx, target);
2556 gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,
2561 if (legal_texture_size(ctx, texFormat, width, height, depth)) {
2562 _mesa_init_teximage_fields(ctx, texImage, width, height,
2563 depth, border, internalFormat,
2566 else if (texImage) {
2567 clear_teximage_fields(texImage);
2572 /* non-proxy target */
2573 const GLuint face = _mesa_tex_target_to_face(target);
2574 struct gl_texture_object *texObj;
2575 struct gl_texture_image *texImage;
2578 return; /* error was recorded */
2581 /* Allow a hardware driver to just strip out the border, to provide
2582 * reliable but slightly incorrect hardware rendering instead of
2583 * rarely-tested software fallback rendering.
2585 if (border && ctx->Const.StripTextureBorder) {
2586 strip_texture_border(target, &width, &height, &depth, unpack,
2589 unpack = &unpack_no_border;
2592 if (ctx->NewState & _NEW_PIXEL)
2593 _mesa_update_state(ctx);
2595 texObj = _mesa_get_current_tex_object(ctx, target);
2597 _mesa_lock_texture(ctx, texObj);
2599 texImage = _mesa_get_tex_image(ctx, texObj, target, level);
2602 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
2605 gl_format texFormat;
2607 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
2609 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
2610 internalFormat, format,
2613 if (legal_texture_size(ctx, texFormat, width, height, depth)) {
2614 _mesa_init_teximage_fields(ctx, texImage,
2615 width, height, depth,
2616 border, internalFormat, texFormat);
2618 /* Give the texture to the driver. <pixels> may be null. */
2619 ctx->Driver.TexImage(ctx, dims, texImage, format,
2620 type, pixels, unpack);
2622 check_gen_mipmap(ctx, target, texObj, level);
2624 _mesa_update_fbo_texture(ctx, texObj, face, level);
2626 _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
2629 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
2633 _mesa_unlock_texture(ctx, texObj);
2639 * Called from the API. Note that width includes the border.
2642 _mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
2643 GLsizei width, GLint border, GLenum format,
2644 GLenum type, const GLvoid *pixels )
2646 GET_CURRENT_CONTEXT(ctx);
2647 teximage(ctx, 1, target, level, internalFormat, width, 1, 1,
2648 border, format, type, pixels);
2653 _mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
2654 GLsizei width, GLsizei height, GLint border,
2655 GLenum format, GLenum type,
2656 const GLvoid *pixels )
2658 GET_CURRENT_CONTEXT(ctx);
2659 teximage(ctx, 2, target, level, internalFormat, width, height, 1,
2660 border, format, type, pixels);
2665 * Called by the API or display list executor.
2666 * Note that width and height include the border.
2669 _mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
2670 GLsizei width, GLsizei height, GLsizei depth,
2671 GLint border, GLenum format, GLenum type,
2672 const GLvoid *pixels )
2674 GET_CURRENT_CONTEXT(ctx);
2675 teximage(ctx, 3, target, level, internalFormat, width, height, depth,
2676 border, format, type, pixels);
2681 _mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat,
2682 GLsizei width, GLsizei height, GLsizei depth,
2683 GLint border, GLenum format, GLenum type,
2684 const GLvoid *pixels )
2686 _mesa_TexImage3D(target, level, (GLint) internalFormat, width, height,
2687 depth, border, format, type, pixels);
2691 #if FEATURE_OES_EGL_image
2693 _mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image)
2695 struct gl_texture_object *texObj;
2696 struct gl_texture_image *texImage;
2697 GET_CURRENT_CONTEXT(ctx);
2698 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
2700 if ((target == GL_TEXTURE_2D &&
2701 !ctx->Extensions.OES_EGL_image) ||
2702 (target == GL_TEXTURE_EXTERNAL_OES &&
2703 !ctx->Extensions.OES_EGL_image_external)) {
2704 _mesa_error(ctx, GL_INVALID_ENUM,
2705 "glEGLImageTargetTexture2D(target=%d)", target);
2709 if (ctx->NewState & _NEW_PIXEL)
2710 _mesa_update_state(ctx);
2712 texObj = _mesa_get_current_tex_object(ctx, target);
2713 _mesa_lock_texture(ctx, texObj);
2715 if (texObj->Immutable) {
2716 _mesa_error(ctx, GL_INVALID_OPERATION,
2717 "glEGLImageTargetTexture2D(texture is immutable)");
2718 _mesa_unlock_texture(ctx, texObj);
2722 texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
2724 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D");
2726 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
2728 ctx->Driver.EGLImageTargetTexture2D(ctx, target,
2729 texObj, texImage, image);
2731 _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
2733 _mesa_unlock_texture(ctx, texObj);
2741 * Implement all the glTexSubImage1/2/3D() functions.
2744 texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
2745 GLint xoffset, GLint yoffset, GLint zoffset,
2746 GLsizei width, GLsizei height, GLsizei depth,
2747 GLenum format, GLenum type, const GLvoid *pixels )
2749 struct gl_texture_object *texObj;
2750 struct gl_texture_image *texImage;
2752 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
2754 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
2755 _mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n",
2757 _mesa_lookup_enum_by_nr(target), level,
2758 xoffset, yoffset, zoffset, width, height, depth,
2759 _mesa_lookup_enum_by_nr(format),
2760 _mesa_lookup_enum_by_nr(type), pixels);
2762 /* check target (proxies not allowed) */
2763 if (!legal_texsubimage_target(ctx, dims, target)) {
2764 _mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)",
2765 dims, _mesa_lookup_enum_by_nr(target));
2769 if (ctx->NewState & _NEW_PIXEL)
2770 _mesa_update_state(ctx);
2772 if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset,
2773 width, height, depth, format, type)) {
2774 return; /* error was detected */
2777 texObj = _mesa_get_current_tex_object(ctx, target);
2779 _mesa_lock_texture(ctx, texObj);
2781 texImage = _mesa_select_tex_image(ctx, texObj, target, level);
2783 if (subtexture_error_check2(ctx, dims, target, level,
2784 xoffset, yoffset, zoffset,
2785 width, height, depth,
2786 format, type, texImage)) {
2787 /* error was recorded */
2789 else if (width > 0 && height > 0 && depth > 0) {
2790 /* If we have a border, offset=-1 is legal. Bias by border width. */
2793 if (target != GL_TEXTURE_2D_ARRAY)
2794 zoffset += texImage->Border;
2797 if (target != GL_TEXTURE_1D_ARRAY)
2798 yoffset += texImage->Border;
2801 xoffset += texImage->Border;
2804 ctx->Driver.TexSubImage(ctx, dims, texImage,
2805 xoffset, yoffset, zoffset,
2806 width, height, depth,
2807 format, type, pixels, &ctx->Unpack);
2809 check_gen_mipmap(ctx, target, texObj, level);
2811 ctx->NewState |= _NEW_TEXTURE;
2814 _mesa_unlock_texture(ctx, texObj);
2819 _mesa_TexSubImage1D( GLenum target, GLint level,
2820 GLint xoffset, GLsizei width,
2821 GLenum format, GLenum type,
2822 const GLvoid *pixels )
2824 GET_CURRENT_CONTEXT(ctx);
2825 texsubimage(ctx, 1, target, level,
2828 format, type, pixels);
2833 _mesa_TexSubImage2D( GLenum target, GLint level,
2834 GLint xoffset, GLint yoffset,
2835 GLsizei width, GLsizei height,
2836 GLenum format, GLenum type,
2837 const GLvoid *pixels )
2839 GET_CURRENT_CONTEXT(ctx);
2840 texsubimage(ctx, 2, target, level,
2841 xoffset, yoffset, 0,
2843 format, type, pixels);
2849 _mesa_TexSubImage3D( GLenum target, GLint level,
2850 GLint xoffset, GLint yoffset, GLint zoffset,
2851 GLsizei width, GLsizei height, GLsizei depth,
2852 GLenum format, GLenum type,
2853 const GLvoid *pixels )
2855 GET_CURRENT_CONTEXT(ctx);
2856 texsubimage(ctx, 3, target, level,
2857 xoffset, yoffset, zoffset,
2858 width, height, depth,
2859 format, type, pixels);
2865 * For glCopyTexSubImage, return the source renderbuffer to copy texel data
2866 * from. This depends on whether the texture contains color or depth values.
2868 static struct gl_renderbuffer *
2869 get_copy_tex_image_source(struct gl_context *ctx, gl_format texFormat)
2871 if (_mesa_get_format_bits(texFormat, GL_DEPTH_BITS) > 0) {
2872 /* reading from depth/stencil buffer */
2873 return ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
2876 /* copying from color buffer */
2877 return ctx->ReadBuffer->_ColorReadBuffer;
2884 * Implement the glCopyTexImage1/2D() functions.
2887 copyteximage(struct gl_context *ctx, GLuint dims,
2888 GLenum target, GLint level, GLenum internalFormat,
2889 GLint x, GLint y, GLsizei width, GLsizei height, GLint border )
2891 struct gl_texture_object *texObj;
2892 struct gl_texture_image *texImage;
2893 const GLuint face = _mesa_tex_target_to_face(target);
2895 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
2897 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
2898 _mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",
2900 _mesa_lookup_enum_by_nr(target), level,
2901 _mesa_lookup_enum_by_nr(internalFormat),
2902 x, y, width, height, border);
2904 if (ctx->NewState & NEW_COPY_TEX_STATE)
2905 _mesa_update_state(ctx);
2907 if (copytexture_error_check(ctx, dims, target, level, internalFormat,
2908 width, height, border))
2911 texObj = _mesa_get_current_tex_object(ctx, target);
2913 if (border && ctx->Const.StripTextureBorder) {
2915 width -= border * 2;
2918 height -= border * 2;
2923 _mesa_lock_texture(ctx, texObj);
2925 texImage = _mesa_get_tex_image(ctx, texObj, target, level);
2928 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
2931 /* choose actual hw format */
2932 gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,
2937 if (legal_texture_size(ctx, texFormat, width, height, 1)) {
2938 GLint srcX = x, srcY = y, dstX = 0, dstY = 0, dstZ = 0;
2940 /* Free old texture image */
2941 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
2943 _mesa_init_teximage_fields(ctx, texImage, width, height, 1,
2944 border, internalFormat, texFormat);
2946 /* Allocate texture memory (no pixel data yet) */
2947 ctx->Driver.TexImage(ctx, dims, texImage,
2949 NULL, &ctx->Unpack);
2951 if (_mesa_clip_copytexsubimage(ctx, &dstX, &dstY, &srcX, &srcY,
2953 struct gl_renderbuffer *srcRb =
2954 get_copy_tex_image_source(ctx, texImage->TexFormat);
2956 ctx->Driver.CopyTexSubImage(ctx, dims, texImage, dstX, dstY, dstZ,
2957 srcRb, srcX, srcY, width, height);
2960 check_gen_mipmap(ctx, target, texObj, level);
2962 _mesa_update_fbo_texture(ctx, texObj, face, level);
2964 _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
2967 /* probably too large of image */
2968 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
2972 _mesa_unlock_texture(ctx, texObj);
2978 _mesa_CopyTexImage1D( GLenum target, GLint level,
2979 GLenum internalFormat,
2981 GLsizei width, GLint border )
2983 GET_CURRENT_CONTEXT(ctx);
2984 copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border);
2990 _mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
2991 GLint x, GLint y, GLsizei width, GLsizei height,
2994 GET_CURRENT_CONTEXT(ctx);
2995 copyteximage(ctx, 2, target, level, internalFormat,
2996 x, y, width, height, border);
3002 * Implementation for glCopyTexSubImage1/2/3D() functions.
3005 copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
3006 GLint xoffset, GLint yoffset, GLint zoffset,
3007 GLint x, GLint y, GLsizei width, GLsizei height)
3009 struct gl_texture_object *texObj;
3010 struct gl_texture_image *texImage;
3012 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3014 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
3015 _mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n",
3017 _mesa_lookup_enum_by_nr(target),
3018 level, xoffset, yoffset, zoffset, x, y, width, height);
3020 if (ctx->NewState & NEW_COPY_TEX_STATE)
3021 _mesa_update_state(ctx);
3023 if (copytexsubimage_error_check1(ctx, dims, target, level))
3026 texObj = _mesa_get_current_tex_object(ctx, target);
3028 _mesa_lock_texture(ctx, texObj);
3030 texImage = _mesa_select_tex_image(ctx, texObj, target, level);
3032 if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset,
3033 zoffset, width, height, texImage)) {
3034 /* error was recored */
3037 /* If we have a border, offset=-1 is legal. Bias by border width. */
3040 if (target != GL_TEXTURE_2D_ARRAY)
3041 zoffset += texImage->Border;
3044 if (target != GL_TEXTURE_1D_ARRAY)
3045 yoffset += texImage->Border;
3048 xoffset += texImage->Border;
3051 if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y,
3053 struct gl_renderbuffer *srcRb =
3054 get_copy_tex_image_source(ctx, texImage->TexFormat);
3056 ctx->Driver.CopyTexSubImage(ctx, dims, texImage,
3057 xoffset, yoffset, zoffset,
3058 srcRb, x, y, width, height);
3060 check_gen_mipmap(ctx, target, texObj, level);
3062 ctx->NewState |= _NEW_TEXTURE;
3066 _mesa_unlock_texture(ctx, texObj);
3071 _mesa_CopyTexSubImage1D( GLenum target, GLint level,
3072 GLint xoffset, GLint x, GLint y, GLsizei width )
3074 GET_CURRENT_CONTEXT(ctx);
3075 copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1);
3081 _mesa_CopyTexSubImage2D( GLenum target, GLint level,
3082 GLint xoffset, GLint yoffset,
3083 GLint x, GLint y, GLsizei width, GLsizei height )
3085 GET_CURRENT_CONTEXT(ctx);
3086 copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y,
3093 _mesa_CopyTexSubImage3D( GLenum target, GLint level,
3094 GLint xoffset, GLint yoffset, GLint zoffset,
3095 GLint x, GLint y, GLsizei width, GLsizei height )
3097 GET_CURRENT_CONTEXT(ctx);
3098 copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset,
3099 x, y, width, height);
3105 /**********************************************************************/
3106 /****** Compressed Textures ******/
3107 /**********************************************************************/
3111 * Return expected size of a compressed texture.
3114 compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,
3117 gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
3118 return _mesa_format_image_size(mesaFormat, width, height, depth);
3123 * Return compressed texture block size, in pixels.
3126 get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh)
3128 gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
3129 _mesa_get_format_block_size(mesaFormat, bw, bh);
3134 * Error checking for glCompressedTexImage[123]D().
3135 * \param reason returns reason for error, if any
3136 * \return error code or GL_NO_ERROR.
3139 compressed_texture_error_check(struct gl_context *ctx, GLint dimensions,
3140 GLenum target, GLint level,
3141 GLenum internalFormat, GLsizei width,
3142 GLsizei height, GLsizei depth, GLint border,
3143 GLsizei imageSize, char **reason)
3145 const GLenum proxyTarget = get_proxy_target(target);
3146 const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
3148 GLenum choose_format;
3150 GLenum proxy_format;
3152 *reason = ""; /* no error */
3154 if (!target_can_be_compressed(ctx, target, internalFormat)) {
3156 return GL_INVALID_ENUM;
3159 /* This will detect any invalid internalFormat value */
3160 if (!_mesa_is_compressed_format(ctx, internalFormat)) {
3161 *reason = "internalFormat";
3162 return GL_INVALID_ENUM;
3165 switch (internalFormat) {
3167 case GL_PALETTE4_RGB8_OES:
3168 case GL_PALETTE4_RGBA8_OES:
3169 case GL_PALETTE4_R5_G6_B5_OES:
3170 case GL_PALETTE4_RGBA4_OES:
3171 case GL_PALETTE4_RGB5_A1_OES:
3172 case GL_PALETTE8_RGB8_OES:
3173 case GL_PALETTE8_RGBA8_OES:
3174 case GL_PALETTE8_R5_G6_B5_OES:
3175 case GL_PALETTE8_RGBA4_OES:
3176 case GL_PALETTE8_RGB5_A1_OES:
3177 _mesa_cpal_compressed_format_type(internalFormat, &choose_format,
3179 proxy_format = choose_format;
3182 if (level > 0 || level < -maxLevels) {
3184 return GL_INVALID_VALUE;
3187 if (dimensions != 2) {
3188 *reason = "compressed paletted textures must be 2D";
3189 return GL_INVALID_OPERATION;
3192 /* Figure out the expected texture size (in bytes). This will be
3193 * checked against the actual size later.
3195 expectedSize = _mesa_cpal_compressed_size(level, internalFormat,
3198 /* This is for the benefit of the TestProxyTexImage below. It expects
3199 * level to be non-negative. OES_compressed_paletted_texture uses a
3200 * weird mechanism where the level specified to glCompressedTexImage2D
3201 * is -(n-1) number of levels in the texture, and the data specifies the
3202 * complete mipmap stack. This is done to ensure the palette is the
3203 * same for all levels.
3210 choose_format = GL_NONE;
3211 choose_type = GL_NONE;
3212 proxy_format = internalFormat;
3215 if (level < 0 || level >= maxLevels) {
3217 return GL_INVALID_VALUE;
3220 /* Figure out the expected texture size (in bytes). This will be
3221 * checked against the actual size later.
3223 expectedSize = compressed_tex_size(width, height, depth, internalFormat);
3227 /* This should really never fail */
3228 if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
3229 *reason = "internalFormat";
3230 return GL_INVALID_ENUM;
3233 /* No compressed formats support borders at this time */
3235 *reason = "border != 0";
3236 return GL_INVALID_VALUE;
3239 /* For cube map, width must equal height */
3240 if (_mesa_is_cube_face(target) && width != height) {
3241 *reason = "width != height";
3242 return GL_INVALID_VALUE;
3245 /* check image size against compression block size */
3247 gl_format texFormat =
3248 ctx->Driver.ChooseTextureFormat(ctx, proxy_format,
3249 choose_format, choose_type);
3252 _mesa_get_format_block_size(texFormat, &bw, &bh);
3253 if ((width > bw && width % bw > 0) ||
3254 (height > bh && height % bh > 0)) {
3256 * Per GL_ARB_texture_compression: GL_INVALID_OPERATION is
3257 * generated [...] if any parameter combinations are not
3258 * supported by the specific compressed internal format.
3260 *reason = "invalid width or height for compression format";
3261 return GL_INVALID_OPERATION;
3265 /* check image sizes */
3266 if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
3267 proxy_format, choose_format,
3269 width, height, depth, border)) {
3270 /* See error comment above */
3271 *reason = "invalid width, height or format";
3272 return GL_INVALID_OPERATION;
3275 /* check image size in bytes */
3276 if (expectedSize != imageSize) {
3277 /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...]
3278 * if <imageSize> is not consistent with the format, dimensions, and
3279 * contents of the specified image.
3281 *reason = "imageSize inconsistant with width/height/format";
3282 return GL_INVALID_VALUE;
3285 if (!mutable_tex_object(ctx, target)) {
3286 *reason = "immutable texture";
3287 return GL_INVALID_OPERATION;
3295 * Error checking for glCompressedTexSubImage[123]D().
3296 * \warning There are some bad assumptions here about the size of compressed
3297 * texture tiles (multiple of 4) used to test the validity of the
3298 * offset and size parameters.
3299 * \return error code or GL_NO_ERROR.
3302 compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions,
3303 GLenum target, GLint level,
3304 GLint xoffset, GLint yoffset, GLint zoffset,
3305 GLsizei width, GLsizei height, GLsizei depth,
3306 GLenum format, GLsizei imageSize)
3308 GLint expectedSize, maxLevels = 0, maxTextureSize;
3312 if (dimensions == 1) {
3313 /* 1D compressed textures not allowed */
3314 return GL_INVALID_ENUM;
3316 else if (dimensions == 2) {
3317 if (target == GL_PROXY_TEXTURE_2D) {
3318 maxLevels = ctx->Const.MaxTextureLevels;
3320 else if (target == GL_TEXTURE_2D) {
3321 maxLevels = ctx->Const.MaxTextureLevels;
3323 else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
3324 if (!ctx->Extensions.ARB_texture_cube_map)
3325 return GL_INVALID_ENUM; /*target*/
3326 maxLevels = ctx->Const.MaxCubeTextureLevels;
3328 else if (_mesa_is_cube_face(target)) {
3329 if (!ctx->Extensions.ARB_texture_cube_map)
3330 return GL_INVALID_ENUM; /*target*/
3331 maxLevels = ctx->Const.MaxCubeTextureLevels;
3334 return GL_INVALID_ENUM; /*target*/
3337 else if (dimensions == 3) {
3338 /* 3D compressed textures not allowed */
3339 return GL_INVALID_ENUM;
3342 maxTextureSize = 1 << (maxLevels - 1);
3344 /* this will catch any invalid compressed format token */
3345 if (!_mesa_is_compressed_format(ctx, format))
3346 return GL_INVALID_ENUM;
3348 if (width < 1 || width > maxTextureSize)
3349 return GL_INVALID_VALUE;
3351 if ((height < 1 || height > maxTextureSize)
3353 return GL_INVALID_VALUE;
3355 if (level < 0 || level >= maxLevels)
3356 return GL_INVALID_VALUE;
3359 * do checks which depend on compression block size
3361 get_compressed_block_size(format, &bw, &bh);
3363 if ((xoffset % bw != 0) || (yoffset % bh != 0))
3364 return GL_INVALID_VALUE;
3366 if ((width % bw != 0) && width != 2 && width != 1)
3367 return GL_INVALID_VALUE;
3369 if ((height % bh != 0) && height != 2 && height != 1)
3370 return GL_INVALID_VALUE;
3372 expectedSize = compressed_tex_size(width, height, depth, format);
3373 if (expectedSize != imageSize)
3374 return GL_INVALID_VALUE;
3381 * Do second part of glCompressedTexSubImage error checking.
3382 * \return GL_TRUE if error found, GL_FALSE otherwise.
3385 compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims,
3386 GLsizei width, GLsizei height,
3387 GLsizei depth, GLenum format,
3388 struct gl_texture_image *texImage)
3391 if ((GLint) format != texImage->InternalFormat) {
3392 _mesa_error(ctx, GL_INVALID_OPERATION,
3393 "glCompressedTexSubImage%uD(format=0x%x)", dims, format);
3397 if (compressedteximage_only_format(ctx, format)) {
3398 _mesa_error(ctx, GL_INVALID_OPERATION,
3399 "glCompressedTexSubImage%uD(format=0x%x cannot be updated)"
3404 if (((width == 1 || width == 2) &&
3405 width != (GLsizei) texImage->Width) ||
3406 (width > (GLsizei) texImage->Width)) {
3407 _mesa_error(ctx, GL_INVALID_VALUE,
3408 "glCompressedTexSubImage%uD(width=%d)", dims, width);
3413 if (((height == 1 || height == 2) &&
3414 height != (GLsizei) texImage->Height) ||
3415 (height > (GLsizei) texImage->Height)) {
3416 _mesa_error(ctx, GL_INVALID_VALUE,
3417 "glCompressedTexSubImage%uD(height=%d)", dims, height);
3423 if (((depth == 1 || depth == 2) &&
3424 depth != (GLsizei) texImage->Depth) ||
3425 (depth > (GLsizei) texImage->Depth)) {
3426 _mesa_error(ctx, GL_INVALID_VALUE,
3427 "glCompressedTexSubImage%uD(depth=%d)", dims, depth);
3437 * Implementation of the glCompressedTexImage1/2/3D() functions.
3440 compressedteximage(struct gl_context *ctx, GLuint dims,
3441 GLenum target, GLint level,
3442 GLenum internalFormat, GLsizei width,
3443 GLsizei height, GLsizei depth, GLint border,
3444 GLsizei imageSize, const GLvoid *data)
3449 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3451 if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
3453 "glCompressedTexImage%uDARB %s %d %s %d %d %d %d %d %p\n",
3455 _mesa_lookup_enum_by_nr(target), level,
3456 _mesa_lookup_enum_by_nr(internalFormat),
3457 width, height, depth, border, imageSize, data);
3460 if (!legal_teximage_target(ctx, dims, target)) {
3461 _mesa_error(ctx, GL_INVALID_ENUM, "glCompressedTexImage%uD(target=%s)",
3462 dims, _mesa_lookup_enum_by_nr(target));
3466 error = compressed_texture_error_check(ctx, dims, target, level,
3467 internalFormat, width, height, depth,
3468 border, imageSize, &reason);
3471 /* XXX this is kind of a hack */
3472 if (!error && dims == 2) {
3473 switch (internalFormat) {
3474 case GL_PALETTE4_RGB8_OES:
3475 case GL_PALETTE4_RGBA8_OES:
3476 case GL_PALETTE4_R5_G6_B5_OES:
3477 case GL_PALETTE4_RGBA4_OES:
3478 case GL_PALETTE4_RGB5_A1_OES:
3479 case GL_PALETTE8_RGB8_OES:
3480 case GL_PALETTE8_RGBA8_OES:
3481 case GL_PALETTE8_R5_G6_B5_OES:
3482 case GL_PALETTE8_RGBA4_OES:
3483 case GL_PALETTE8_RGB5_A1_OES:
3484 _mesa_cpal_compressed_teximage2d(target, level, internalFormat,
3485 width, height, imageSize, data);
3491 if (_mesa_is_proxy_texture(target)) {
3492 /* Proxy texture: just check for errors and update proxy state */
3493 struct gl_texture_image *texImage;
3496 struct gl_texture_object *texObj =
3497 _mesa_get_current_tex_object(ctx, target);
3498 gl_format texFormat =
3499 _mesa_choose_texture_format(ctx, texObj, target, level,
3500 internalFormat, GL_NONE, GL_NONE);
3501 if (!legal_texture_size(ctx, texFormat, width, height, depth)) {
3502 error = GL_OUT_OF_MEMORY;
3506 texImage = _mesa_get_proxy_tex_image(ctx, target, level);
3509 /* if error, clear all proxy texture image parameters */
3510 clear_teximage_fields(texImage);
3513 /* no error: store the teximage parameters */
3514 _mesa_init_teximage_fields(ctx, texImage, width, height,
3515 depth, border, internalFormat,
3521 /* non-proxy target */
3522 struct gl_texture_object *texObj;
3523 struct gl_texture_image *texImage;
3526 _mesa_error(ctx, error, "glCompressedTexImage%uD(%s)", dims, reason);
3530 texObj = _mesa_get_current_tex_object(ctx, target);
3532 _mesa_lock_texture(ctx, texObj);
3534 texImage = _mesa_get_tex_image(ctx, texObj, target, level);
3536 _mesa_error(ctx, GL_OUT_OF_MEMORY,
3537 "glCompressedTexImage%uD", dims);
3540 gl_format texFormat;
3542 ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
3544 texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
3545 internalFormat, GL_NONE,
3548 if (legal_texture_size(ctx, texFormat, width, height, depth)) {
3549 _mesa_init_teximage_fields(ctx, texImage,
3550 width, height, depth,
3551 border, internalFormat, texFormat);
3553 ctx->Driver.CompressedTexImage(ctx, dims, texImage,
3555 width, height, depth,
3556 border, imageSize, data);
3558 check_gen_mipmap(ctx, target, texObj, level);
3560 _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
3563 _mesa_error(ctx, GL_OUT_OF_MEMORY,
3564 "glCompressedTexImage%uD", dims);
3568 _mesa_unlock_texture(ctx, texObj);
3574 _mesa_CompressedTexImage1DARB(GLenum target, GLint level,
3575 GLenum internalFormat, GLsizei width,
3576 GLint border, GLsizei imageSize,
3579 GET_CURRENT_CONTEXT(ctx);
3580 compressedteximage(ctx, 1, target, level, internalFormat,
3581 width, 1, 1, border, imageSize, data);
3586 _mesa_CompressedTexImage2DARB(GLenum target, GLint level,
3587 GLenum internalFormat, GLsizei width,
3588 GLsizei height, GLint border, GLsizei imageSize,
3591 GET_CURRENT_CONTEXT(ctx);
3592 compressedteximage(ctx, 2, target, level, internalFormat,
3593 width, height, 1, border, imageSize, data);
3598 _mesa_CompressedTexImage3DARB(GLenum target, GLint level,
3599 GLenum internalFormat, GLsizei width,
3600 GLsizei height, GLsizei depth, GLint border,
3601 GLsizei imageSize, const GLvoid *data)
3603 GET_CURRENT_CONTEXT(ctx);
3604 compressedteximage(ctx, 3, target, level, internalFormat,
3605 width, height, depth, border, imageSize, data);
3610 * Common helper for glCompressedTexSubImage1/2/3D().
3613 compressed_tex_sub_image(GLuint dims, GLenum target, GLint level,
3614 GLint xoffset, GLint yoffset, GLint zoffset,
3615 GLsizei width, GLsizei height, GLsizei depth,
3616 GLenum format, GLsizei imageSize, const GLvoid *data)
3618 struct gl_texture_object *texObj;
3619 struct gl_texture_image *texImage;
3621 GET_CURRENT_CONTEXT(ctx);
3622 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3624 error = compressed_subtexture_error_check(ctx, dims, target, level,
3625 xoffset, 0, 0, /* pos */
3626 width, height, depth, /* size */
3629 _mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims);
3633 texObj = _mesa_get_current_tex_object(ctx, target);
3635 _mesa_lock_texture(ctx, texObj);
3637 texImage = _mesa_select_tex_image(ctx, texObj, target, level);
3640 if (compressed_subtexture_error_check2(ctx, dims, width, height, depth,
3641 format, texImage)) {
3642 /* error was recorded */
3644 else if (width > 0 && height > 0 && depth > 0) {
3645 ctx->Driver.CompressedTexSubImage(ctx, dims, texImage,
3646 xoffset, yoffset, zoffset,
3647 width, height, depth,
3648 format, imageSize, data);
3650 check_gen_mipmap(ctx, target, texObj, level);
3652 ctx->NewState |= _NEW_TEXTURE;
3655 _mesa_unlock_texture(ctx, texObj);
3660 _mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
3661 GLsizei width, GLenum format,
3662 GLsizei imageSize, const GLvoid *data)
3664 compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1,
3665 format, imageSize, data);
3670 _mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
3671 GLint yoffset, GLsizei width, GLsizei height,
3672 GLenum format, GLsizei imageSize,
3675 compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0,
3676 width, height, 1, format, imageSize, data);
3681 _mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
3682 GLint yoffset, GLint zoffset, GLsizei width,
3683 GLsizei height, GLsizei depth, GLenum format,
3684 GLsizei imageSize, const GLvoid *data)
3686 compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset,
3687 width, height, depth, format, imageSize, data);
3691 get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
3693 switch (internalFormat) {
3695 return MESA_FORMAT_A8;
3697 return MESA_FORMAT_A16;
3698 case GL_ALPHA16F_ARB:
3699 return MESA_FORMAT_ALPHA_FLOAT16;
3700 case GL_ALPHA32F_ARB:
3701 return MESA_FORMAT_ALPHA_FLOAT32;
3702 case GL_ALPHA8I_EXT:
3703 return MESA_FORMAT_ALPHA_INT8;
3704 case GL_ALPHA16I_EXT:
3705 return MESA_FORMAT_ALPHA_INT16;
3706 case GL_ALPHA32I_EXT:
3707 return MESA_FORMAT_ALPHA_INT32;
3708 case GL_ALPHA8UI_EXT:
3709 return MESA_FORMAT_ALPHA_UINT8;
3710 case GL_ALPHA16UI_EXT:
3711 return MESA_FORMAT_ALPHA_UINT16;
3712 case GL_ALPHA32UI_EXT:
3713 return MESA_FORMAT_ALPHA_UINT32;
3715 return MESA_FORMAT_L8;
3716 case GL_LUMINANCE16:
3717 return MESA_FORMAT_L16;
3718 case GL_LUMINANCE16F_ARB:
3719 return MESA_FORMAT_LUMINANCE_FLOAT16;
3720 case GL_LUMINANCE32F_ARB:
3721 return MESA_FORMAT_LUMINANCE_FLOAT32;
3722 case GL_LUMINANCE8I_EXT:
3723 return MESA_FORMAT_LUMINANCE_INT8;
3724 case GL_LUMINANCE16I_EXT:
3725 return MESA_FORMAT_LUMINANCE_INT16;
3726 case GL_LUMINANCE32I_EXT:
3727 return MESA_FORMAT_LUMINANCE_INT32;
3728 case GL_LUMINANCE8UI_EXT:
3729 return MESA_FORMAT_LUMINANCE_UINT8;
3730 case GL_LUMINANCE16UI_EXT:
3731 return MESA_FORMAT_LUMINANCE_UINT16;
3732 case GL_LUMINANCE32UI_EXT:
3733 return MESA_FORMAT_LUMINANCE_UINT32;
3734 case GL_LUMINANCE8_ALPHA8:
3735 return MESA_FORMAT_AL88;
3736 case GL_LUMINANCE16_ALPHA16:
3737 return MESA_FORMAT_AL1616;
3738 case GL_LUMINANCE_ALPHA16F_ARB:
3739 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
3740 case GL_LUMINANCE_ALPHA32F_ARB:
3741 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
3742 case GL_LUMINANCE_ALPHA8I_EXT:
3743 return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
3744 case GL_LUMINANCE_ALPHA16I_EXT:
3745 return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
3746 case GL_LUMINANCE_ALPHA32I_EXT:
3747 return MESA_FORMAT_LUMINANCE_ALPHA_INT16;
3748 case GL_LUMINANCE_ALPHA8UI_EXT:
3749 return MESA_FORMAT_LUMINANCE_ALPHA_UINT8;
3750 case GL_LUMINANCE_ALPHA16UI_EXT:
3751 return MESA_FORMAT_LUMINANCE_ALPHA_UINT16;
3752 case GL_LUMINANCE_ALPHA32UI_EXT:
3753 return MESA_FORMAT_LUMINANCE_ALPHA_UINT32;
3755 return MESA_FORMAT_I8;
3756 case GL_INTENSITY16:
3757 return MESA_FORMAT_I16;
3758 case GL_INTENSITY16F_ARB:
3759 return MESA_FORMAT_INTENSITY_FLOAT16;
3760 case GL_INTENSITY32F_ARB:
3761 return MESA_FORMAT_INTENSITY_FLOAT32;
3762 case GL_INTENSITY8I_EXT:
3763 return MESA_FORMAT_INTENSITY_INT8;
3764 case GL_INTENSITY16I_EXT:
3765 return MESA_FORMAT_INTENSITY_INT16;
3766 case GL_INTENSITY32I_EXT:
3767 return MESA_FORMAT_INTENSITY_INT32;
3768 case GL_INTENSITY8UI_EXT:
3769 return MESA_FORMAT_INTENSITY_UINT8;
3770 case GL_INTENSITY16UI_EXT:
3771 return MESA_FORMAT_INTENSITY_UINT16;
3772 case GL_INTENSITY32UI_EXT:
3773 return MESA_FORMAT_INTENSITY_UINT32;
3775 return MESA_FORMAT_RGBA8888_REV;
3777 return MESA_FORMAT_RGBA_16;
3778 case GL_RGBA16F_ARB:
3779 return MESA_FORMAT_RGBA_FLOAT16;
3780 case GL_RGBA32F_ARB:
3781 return MESA_FORMAT_RGBA_FLOAT32;
3783 return MESA_FORMAT_RGBA_INT8;
3784 case GL_RGBA16I_EXT:
3785 return MESA_FORMAT_RGBA_INT16;
3786 case GL_RGBA32I_EXT:
3787 return MESA_FORMAT_RGBA_INT32;
3788 case GL_RGBA8UI_EXT:
3789 return MESA_FORMAT_RGBA_UINT8;
3790 case GL_RGBA16UI_EXT:
3791 return MESA_FORMAT_RGBA_UINT16;
3792 case GL_RGBA32UI_EXT:
3793 return MESA_FORMAT_RGBA_UINT32;
3796 return MESA_FORMAT_GR88;
3798 return MESA_FORMAT_RG1616;
3800 return MESA_FORMAT_RG_FLOAT16;
3802 return MESA_FORMAT_RG_FLOAT32;
3804 return MESA_FORMAT_RG_INT8;
3806 return MESA_FORMAT_RG_INT16;
3808 return MESA_FORMAT_RG_INT32;
3810 return MESA_FORMAT_RG_UINT8;
3812 return MESA_FORMAT_RG_UINT16;
3814 return MESA_FORMAT_RG_UINT32;
3817 return MESA_FORMAT_R8;
3819 return MESA_FORMAT_R16;
3821 return MESA_FORMAT_R_FLOAT16;
3823 return MESA_FORMAT_R_FLOAT32;
3825 return MESA_FORMAT_R_INT8;
3827 return MESA_FORMAT_R_INT16;
3829 return MESA_FORMAT_R_INT32;
3831 return MESA_FORMAT_R_UINT8;
3833 return MESA_FORMAT_R_UINT16;
3835 return MESA_FORMAT_R_UINT32;
3838 return MESA_FORMAT_NONE;
3843 validate_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
3845 gl_format format = get_texbuffer_format(ctx, internalFormat);
3848 if (format == MESA_FORMAT_NONE)
3849 return MESA_FORMAT_NONE;
3851 datatype = _mesa_get_format_datatype(format);
3852 if (datatype == GL_FLOAT && !ctx->Extensions.ARB_texture_float)
3853 return MESA_FORMAT_NONE;
3855 if (datatype == GL_HALF_FLOAT && !ctx->Extensions.ARB_half_float_pixel)
3856 return MESA_FORMAT_NONE;
3858 /* The GL_ARB_texture_rg and GL_ARB_texture_buffer_object specs don't make
3859 * any mention of R/RG formats, but they appear in the GL 3.1 core
3862 if (ctx->Version <= 30) {
3863 GLenum base_format = _mesa_get_format_base_format(format);
3865 if (base_format == GL_R || base_format == GL_RG)
3866 return MESA_FORMAT_NONE;
3872 /** GL_ARB_texture_buffer_object */
3874 _mesa_TexBuffer(GLenum target, GLenum internalFormat, GLuint buffer)
3876 struct gl_texture_object *texObj;
3877 struct gl_buffer_object *bufObj;
3880 GET_CURRENT_CONTEXT(ctx);
3881 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
3883 if (!ctx->Extensions.ARB_texture_buffer_object) {
3884 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer");
3888 if (target != GL_TEXTURE_BUFFER_ARB) {
3889 _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(target)");
3893 format = validate_texbuffer_format(ctx, internalFormat);
3894 if (format == MESA_FORMAT_NONE) {
3895 _mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(internalFormat 0x%x)",
3900 bufObj = _mesa_lookup_bufferobj(ctx, buffer);
3901 if (buffer && !bufObj) {
3902 _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer(buffer %u)", buffer);
3906 texObj = _mesa_get_current_tex_object(ctx, target);
3908 _mesa_lock_texture(ctx, texObj);
3910 _mesa_reference_buffer_object(ctx, &texObj->BufferObject, bufObj);
3911 texObj->BufferObjectFormat = internalFormat;
3912 texObj->_BufferObjectFormat = format;
3914 _mesa_unlock_texture(ctx, texObj);