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"
52 * State changes which we care about for glCopyTex[Sub]Image() calls.
53 * In particular, we care about pixel transfer state and buffer state
54 * (such as glReadBuffer to make sure we read from the right renderbuffer).
56 #define NEW_COPY_TEX_STATE (_NEW_BUFFERS | _NEW_PIXEL)
61 * Return the simple base format for a given internal texture format.
62 * For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
64 * \param ctx GL context.
65 * \param internalFormat the internal texture format token or 1, 2, 3, or 4.
67 * \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
68 * GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
70 * This is the format which is used during texture application (i.e. the
71 * texture format and env mode determine the arithmetic used.
73 * XXX this could be static
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 (ctx
->API
!= API_OPENGL
) {
134 switch (internalFormat
) {
142 if (ctx
->Extensions
.ARB_depth_texture
) {
143 switch (internalFormat
) {
144 case GL_DEPTH_COMPONENT
:
145 case GL_DEPTH_COMPONENT16
:
146 case GL_DEPTH_COMPONENT24
:
147 case GL_DEPTH_COMPONENT32
:
148 return GL_DEPTH_COMPONENT
;
154 switch (internalFormat
) {
155 case GL_COMPRESSED_ALPHA
:
157 case GL_COMPRESSED_LUMINANCE
:
159 case GL_COMPRESSED_LUMINANCE_ALPHA
:
160 return GL_LUMINANCE_ALPHA
;
161 case GL_COMPRESSED_INTENSITY
:
163 case GL_COMPRESSED_RGB
:
165 case GL_COMPRESSED_RGBA
:
171 if (ctx
->Extensions
.TDFX_texture_compression_FXT1
) {
172 switch (internalFormat
) {
173 case GL_COMPRESSED_RGB_FXT1_3DFX
:
175 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
182 if (ctx
->Extensions
.EXT_texture_compression_s3tc
) {
183 switch (internalFormat
) {
184 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
186 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
187 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
188 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
195 if (ctx
->Extensions
.S3_s3tc
) {
196 switch (internalFormat
) {
208 if (ctx
->Extensions
.MESA_ycbcr_texture
) {
209 if (internalFormat
== GL_YCBCR_MESA
)
210 return GL_YCBCR_MESA
;
213 if (ctx
->Extensions
.ARB_texture_float
) {
214 switch (internalFormat
) {
215 case GL_ALPHA16F_ARB
:
216 case GL_ALPHA32F_ARB
:
224 case GL_INTENSITY16F_ARB
:
225 case GL_INTENSITY32F_ARB
:
227 case GL_LUMINANCE16F_ARB
:
228 case GL_LUMINANCE32F_ARB
:
230 case GL_LUMINANCE_ALPHA16F_ARB
:
231 case GL_LUMINANCE_ALPHA32F_ARB
:
232 return GL_LUMINANCE_ALPHA
;
238 if (ctx
->Extensions
.ATI_envmap_bumpmap
) {
239 switch (internalFormat
) {
248 if (ctx
->Extensions
.EXT_texture_snorm
) {
249 switch (internalFormat
) {
264 case GL_RGBA16_SNORM
:
267 case GL_ALPHA8_SNORM
:
268 case GL_ALPHA16_SNORM
:
270 case GL_LUMINANCE_SNORM
:
271 case GL_LUMINANCE8_SNORM
:
272 case GL_LUMINANCE16_SNORM
:
274 case GL_LUMINANCE_ALPHA_SNORM
:
275 case GL_LUMINANCE8_ALPHA8_SNORM
:
276 case GL_LUMINANCE16_ALPHA16_SNORM
:
277 return GL_LUMINANCE_ALPHA
;
278 case GL_INTENSITY_SNORM
:
279 case GL_INTENSITY8_SNORM
:
280 case GL_INTENSITY16_SNORM
:
287 if (ctx
->Extensions
.EXT_packed_depth_stencil
) {
288 switch (internalFormat
) {
289 case GL_DEPTH_STENCIL_EXT
:
290 case GL_DEPTH24_STENCIL8_EXT
:
291 return GL_DEPTH_STENCIL_EXT
;
297 #if FEATURE_EXT_texture_sRGB
298 if (ctx
->Extensions
.EXT_texture_sRGB
) {
299 switch (internalFormat
) {
302 case GL_COMPRESSED_SRGB_EXT
:
303 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
305 case GL_SRGB_ALPHA_EXT
:
306 case GL_SRGB8_ALPHA8_EXT
:
307 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
308 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
309 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
310 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
312 case GL_SLUMINANCE_ALPHA_EXT
:
313 case GL_SLUMINANCE8_ALPHA8_EXT
:
314 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
315 return GL_LUMINANCE_ALPHA
;
316 case GL_SLUMINANCE_EXT
:
317 case GL_SLUMINANCE8_EXT
:
318 case GL_COMPRESSED_SLUMINANCE_EXT
:
324 #endif /* FEATURE_EXT_texture_sRGB */
326 if (ctx
->Extensions
.EXT_texture_integer
) {
327 switch (internalFormat
) {
329 case GL_RGBA16UI_EXT
:
330 case GL_RGBA32UI_EXT
:
342 case GL_ALPHA8UI_EXT
:
343 case GL_ALPHA16UI_EXT
:
344 case GL_ALPHA32UI_EXT
:
346 case GL_ALPHA16I_EXT
:
347 case GL_ALPHA32I_EXT
:
349 case GL_INTENSITY8UI_EXT
:
350 case GL_INTENSITY16UI_EXT
:
351 case GL_INTENSITY32UI_EXT
:
352 case GL_INTENSITY8I_EXT
:
353 case GL_INTENSITY16I_EXT
:
354 case GL_INTENSITY32I_EXT
:
356 case GL_LUMINANCE8UI_EXT
:
357 case GL_LUMINANCE16UI_EXT
:
358 case GL_LUMINANCE32UI_EXT
:
359 case GL_LUMINANCE8I_EXT
:
360 case GL_LUMINANCE16I_EXT
:
361 case GL_LUMINANCE32I_EXT
:
363 case GL_LUMINANCE_ALPHA8UI_EXT
:
364 case GL_LUMINANCE_ALPHA16UI_EXT
:
365 case GL_LUMINANCE_ALPHA32UI_EXT
:
366 case GL_LUMINANCE_ALPHA8I_EXT
:
367 case GL_LUMINANCE_ALPHA16I_EXT
:
368 case GL_LUMINANCE_ALPHA32I_EXT
:
369 return GL_LUMINANCE_ALPHA
;
375 if (ctx
->Extensions
.ARB_texture_rg
) {
376 switch (internalFormat
) {
378 /* R16F depends on both ARB_half_float_pixel and ARB_texture_float.
380 if (!ctx
->Extensions
.ARB_half_float_pixel
)
384 if (!ctx
->Extensions
.ARB_texture_float
)
393 if (!ctx
->Extensions
.EXT_texture_integer
)
399 case GL_COMPRESSED_RED
:
403 /* RG16F depends on both ARB_half_float_pixel and ARB_texture_float.
405 if (!ctx
->Extensions
.ARB_half_float_pixel
)
409 if (!ctx
->Extensions
.ARB_texture_float
)
418 if (!ctx
->Extensions
.EXT_texture_integer
)
424 case GL_COMPRESSED_RG
:
431 if (ctx
->Extensions
.EXT_texture_shared_exponent
) {
432 switch (internalFormat
) {
440 if (ctx
->Extensions
.EXT_packed_float
) {
441 switch (internalFormat
) {
442 case GL_R11F_G11F_B10F_EXT
:
449 if (ctx
->Extensions
.ARB_depth_buffer_float
) {
450 switch (internalFormat
) {
451 case GL_DEPTH_COMPONENT32F
:
452 return GL_DEPTH_COMPONENT
;
453 case GL_DEPTH32F_STENCIL8
:
454 return GL_DEPTH_STENCIL
;
460 if (ctx
->Extensions
.ARB_texture_compression_rgtc
) {
461 switch (internalFormat
) {
462 case GL_COMPRESSED_RED_RGTC1
:
463 case GL_COMPRESSED_SIGNED_RED_RGTC1
:
465 case GL_COMPRESSED_RG_RGTC2
:
466 case GL_COMPRESSED_SIGNED_RG_RGTC2
:
473 if (ctx
->Extensions
.EXT_texture_compression_latc
) {
474 switch (internalFormat
) {
475 case GL_COMPRESSED_LUMINANCE_LATC1_EXT
:
476 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT
:
478 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT
:
479 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT
:
480 return GL_LUMINANCE_ALPHA
;
486 if (ctx
->Extensions
.ATI_texture_compression_3dc
) {
487 switch (internalFormat
) {
488 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI
:
489 return GL_LUMINANCE_ALPHA
;
495 if (ctx
->API
== API_OPENGLES
) {
496 switch (internalFormat
) {
497 case GL_PALETTE4_RGB8_OES
:
498 case GL_PALETTE4_R5_G6_B5_OES
:
499 case GL_PALETTE8_RGB8_OES
:
500 case GL_PALETTE8_R5_G6_B5_OES
:
502 case GL_PALETTE4_RGBA8_OES
:
503 case GL_PALETTE8_RGB5_A1_OES
:
504 case GL_PALETTE4_RGBA4_OES
:
505 case GL_PALETTE4_RGB5_A1_OES
:
506 case GL_PALETTE8_RGBA8_OES
:
507 case GL_PALETTE8_RGBA4_OES
:
514 return -1; /* error */
519 * For cube map faces, return a face index in [0,5].
520 * For other targets return 0;
523 _mesa_tex_target_to_face(GLenum target
)
525 if (target
>= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
&&
526 target
<= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
)
527 return (GLuint
) target
- (GLuint
) GL_TEXTURE_CUBE_MAP_POSITIVE_X
;
535 * Store a gl_texture_image pointer in a gl_texture_object structure
536 * according to the target and level parameters.
538 * \param tObj texture object.
539 * \param target texture target.
540 * \param level image level.
541 * \param texImage texture image.
544 _mesa_set_tex_image(struct gl_texture_object
*tObj
,
545 GLenum target
, GLint level
,
546 struct gl_texture_image
*texImage
)
548 const GLuint face
= _mesa_tex_target_to_face(target
);
552 ASSERT(target
!= GL_TEXTURE_RECTANGLE_NV
|| level
== 0);
554 tObj
->Image
[face
][level
] = texImage
;
556 /* Set the 'back' pointer */
557 texImage
->TexObject
= tObj
;
558 texImage
->Level
= level
;
559 texImage
->Face
= face
;
564 * Allocate a texture image structure.
566 * Called via ctx->Driver.NewTextureImage() unless overriden by a device
569 * \return a pointer to gl_texture_image struct with all fields initialized to
572 struct gl_texture_image
*
573 _mesa_new_texture_image( struct gl_context
*ctx
)
576 return CALLOC_STRUCT(gl_texture_image
);
581 * Free a gl_texture_image and associated data.
582 * This function is a fallback called via ctx->Driver.DeleteTextureImage().
584 * \param texImage texture image.
586 * Free the texture image structure and the associated image data.
589 _mesa_delete_texture_image(struct gl_context
*ctx
,
590 struct gl_texture_image
*texImage
)
592 /* Free texImage->Data and/or any other driver-specific texture
595 ASSERT(ctx
->Driver
.FreeTextureImageBuffer
);
596 ctx
->Driver
.FreeTextureImageBuffer( ctx
, texImage
);
601 * Test if a target is a proxy target.
603 * \param target texture target.
605 * \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise.
608 _mesa_is_proxy_texture(GLenum target
)
610 /* NUM_TEXTURE_TARGETS should match number of terms below,
611 * except there's no proxy for GL_TEXTURE_BUFFER.
613 assert(NUM_TEXTURE_TARGETS
== 8);
615 return (target
== GL_PROXY_TEXTURE_1D
||
616 target
== GL_PROXY_TEXTURE_2D
||
617 target
== GL_PROXY_TEXTURE_3D
||
618 target
== GL_PROXY_TEXTURE_CUBE_MAP_ARB
||
619 target
== GL_PROXY_TEXTURE_RECTANGLE_NV
||
620 target
== GL_PROXY_TEXTURE_1D_ARRAY_EXT
||
621 target
== GL_PROXY_TEXTURE_2D_ARRAY_EXT
);
626 * Return the proxy target which corresponds to the given texture target
629 get_proxy_target(GLenum target
)
633 case GL_PROXY_TEXTURE_1D
:
634 return GL_PROXY_TEXTURE_1D
;
636 case GL_PROXY_TEXTURE_2D
:
637 return GL_PROXY_TEXTURE_2D
;
639 case GL_PROXY_TEXTURE_3D
:
640 return GL_PROXY_TEXTURE_3D
;
641 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
:
642 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB
:
643 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB
:
644 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB
:
645 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB
:
646 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
:
647 case GL_TEXTURE_CUBE_MAP_ARB
:
648 case GL_PROXY_TEXTURE_CUBE_MAP_ARB
:
649 return GL_PROXY_TEXTURE_CUBE_MAP_ARB
;
650 case GL_TEXTURE_RECTANGLE_NV
:
651 case GL_PROXY_TEXTURE_RECTANGLE_NV
:
652 return GL_PROXY_TEXTURE_RECTANGLE_NV
;
653 case GL_TEXTURE_1D_ARRAY_EXT
:
654 case GL_PROXY_TEXTURE_1D_ARRAY_EXT
:
655 return GL_PROXY_TEXTURE_1D_ARRAY_EXT
;
656 case GL_TEXTURE_2D_ARRAY_EXT
:
657 case GL_PROXY_TEXTURE_2D_ARRAY_EXT
:
658 return GL_PROXY_TEXTURE_2D_ARRAY_EXT
;
660 _mesa_problem(NULL
, "unexpected target in get_proxy_target()");
667 * Get the texture object that corresponds to the target of the given
668 * texture unit. The target should have already been checked for validity.
670 * \param ctx GL context.
671 * \param texUnit texture unit.
672 * \param target texture target.
674 * \return pointer to the texture object on success, or NULL on failure.
676 struct gl_texture_object
*
677 _mesa_select_tex_object(struct gl_context
*ctx
,
678 const struct gl_texture_unit
*texUnit
,
681 const GLboolean arrayTex
= (ctx
->Extensions
.MESA_texture_array
||
682 ctx
->Extensions
.EXT_texture_array
);
686 return texUnit
->CurrentTex
[TEXTURE_1D_INDEX
];
687 case GL_PROXY_TEXTURE_1D
:
688 return ctx
->Texture
.ProxyTex
[TEXTURE_1D_INDEX
];
690 return texUnit
->CurrentTex
[TEXTURE_2D_INDEX
];
691 case GL_PROXY_TEXTURE_2D
:
692 return ctx
->Texture
.ProxyTex
[TEXTURE_2D_INDEX
];
694 return texUnit
->CurrentTex
[TEXTURE_3D_INDEX
];
695 case GL_PROXY_TEXTURE_3D
:
696 return ctx
->Texture
.ProxyTex
[TEXTURE_3D_INDEX
];
697 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
:
698 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB
:
699 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB
:
700 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB
:
701 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB
:
702 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
:
703 case GL_TEXTURE_CUBE_MAP_ARB
:
704 return ctx
->Extensions
.ARB_texture_cube_map
705 ? texUnit
->CurrentTex
[TEXTURE_CUBE_INDEX
] : NULL
;
706 case GL_PROXY_TEXTURE_CUBE_MAP_ARB
:
707 return ctx
->Extensions
.ARB_texture_cube_map
708 ? ctx
->Texture
.ProxyTex
[TEXTURE_CUBE_INDEX
] : NULL
;
709 case GL_TEXTURE_RECTANGLE_NV
:
710 return ctx
->Extensions
.NV_texture_rectangle
711 ? texUnit
->CurrentTex
[TEXTURE_RECT_INDEX
] : NULL
;
712 case GL_PROXY_TEXTURE_RECTANGLE_NV
:
713 return ctx
->Extensions
.NV_texture_rectangle
714 ? ctx
->Texture
.ProxyTex
[TEXTURE_RECT_INDEX
] : NULL
;
715 case GL_TEXTURE_1D_ARRAY_EXT
:
716 return arrayTex
? texUnit
->CurrentTex
[TEXTURE_1D_ARRAY_INDEX
] : NULL
;
717 case GL_PROXY_TEXTURE_1D_ARRAY_EXT
:
718 return arrayTex
? ctx
->Texture
.ProxyTex
[TEXTURE_1D_ARRAY_INDEX
] : NULL
;
719 case GL_TEXTURE_2D_ARRAY_EXT
:
720 return arrayTex
? texUnit
->CurrentTex
[TEXTURE_2D_ARRAY_INDEX
] : NULL
;
721 case GL_PROXY_TEXTURE_2D_ARRAY_EXT
:
722 return arrayTex
? ctx
->Texture
.ProxyTex
[TEXTURE_2D_ARRAY_INDEX
] : NULL
;
723 case GL_TEXTURE_BUFFER
:
724 return ctx
->Extensions
.ARB_texture_buffer_object
725 ? texUnit
->CurrentTex
[TEXTURE_BUFFER_INDEX
] : NULL
;
727 _mesa_problem(NULL
, "bad target in _mesa_select_tex_object()");
734 * Return pointer to texture object for given target on current texture unit.
736 struct gl_texture_object
*
737 _mesa_get_current_tex_object(struct gl_context
*ctx
, GLenum target
)
739 struct gl_texture_unit
*texUnit
= _mesa_get_current_tex_unit(ctx
);
740 return _mesa_select_tex_object(ctx
, texUnit
, target
);
745 * Get a texture image pointer from a texture object, given a texture
746 * target and mipmap level. The target and level parameters should
747 * have already been error-checked.
749 * \param ctx GL context.
750 * \param texObj texture unit.
751 * \param target texture target.
752 * \param level image level.
754 * \return pointer to the texture image structure, or NULL on failure.
756 struct gl_texture_image
*
757 _mesa_select_tex_image(struct gl_context
*ctx
,
758 const struct gl_texture_object
*texObj
,
759 GLenum target
, GLint level
)
761 const GLuint face
= _mesa_tex_target_to_face(target
);
765 ASSERT(level
< MAX_TEXTURE_LEVELS
);
767 return texObj
->Image
[face
][level
];
772 * Like _mesa_select_tex_image() but if the image doesn't exist, allocate
773 * it and install it. Only return NULL if passed a bad parameter or run
776 struct gl_texture_image
*
777 _mesa_get_tex_image(struct gl_context
*ctx
, struct gl_texture_object
*texObj
,
778 GLenum target
, GLint level
)
780 struct gl_texture_image
*texImage
;
785 texImage
= _mesa_select_tex_image(ctx
, texObj
, target
, level
);
787 texImage
= ctx
->Driver
.NewTextureImage(ctx
);
789 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "texture image allocation");
793 _mesa_set_tex_image(texObj
, target
, level
, texImage
);
801 * Return pointer to the specified proxy texture image.
802 * Note that proxy textures are per-context, not per-texture unit.
803 * \return pointer to texture image or NULL if invalid target, invalid
804 * level, or out of memory.
806 struct gl_texture_image
*
807 _mesa_get_proxy_tex_image(struct gl_context
*ctx
, GLenum target
, GLint level
)
809 struct gl_texture_image
*texImage
;
816 case GL_PROXY_TEXTURE_1D
:
817 if (level
>= ctx
->Const
.MaxTextureLevels
)
819 texIndex
= TEXTURE_1D_INDEX
;
821 case GL_PROXY_TEXTURE_2D
:
822 if (level
>= ctx
->Const
.MaxTextureLevels
)
824 texIndex
= TEXTURE_2D_INDEX
;
826 case GL_PROXY_TEXTURE_3D
:
827 if (level
>= ctx
->Const
.Max3DTextureLevels
)
829 texIndex
= TEXTURE_3D_INDEX
;
831 case GL_PROXY_TEXTURE_CUBE_MAP
:
832 if (level
>= ctx
->Const
.MaxCubeTextureLevels
)
834 texIndex
= TEXTURE_CUBE_INDEX
;
836 case GL_PROXY_TEXTURE_RECTANGLE_NV
:
839 texIndex
= TEXTURE_RECT_INDEX
;
841 case GL_PROXY_TEXTURE_1D_ARRAY_EXT
:
842 if (level
>= ctx
->Const
.MaxTextureLevels
)
844 texIndex
= TEXTURE_1D_ARRAY_INDEX
;
846 case GL_PROXY_TEXTURE_2D_ARRAY_EXT
:
847 if (level
>= ctx
->Const
.MaxTextureLevels
)
849 texIndex
= TEXTURE_2D_ARRAY_INDEX
;
855 texImage
= ctx
->Texture
.ProxyTex
[texIndex
]->Image
[0][level
];
857 texImage
= ctx
->Driver
.NewTextureImage(ctx
);
859 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "proxy texture allocation");
862 ctx
->Texture
.ProxyTex
[texIndex
]->Image
[0][level
] = texImage
;
863 /* Set the 'back' pointer */
864 texImage
->TexObject
= ctx
->Texture
.ProxyTex
[texIndex
];
871 * Get the maximum number of allowed mipmap levels.
873 * \param ctx GL context.
874 * \param target texture target.
876 * \return the maximum number of allowed mipmap levels for the given
877 * texture target, or zero if passed a bad target.
882 _mesa_max_texture_levels(struct gl_context
*ctx
, GLenum target
)
886 case GL_PROXY_TEXTURE_1D
:
888 case GL_PROXY_TEXTURE_2D
:
889 return ctx
->Const
.MaxTextureLevels
;
891 case GL_PROXY_TEXTURE_3D
:
892 return ctx
->Const
.Max3DTextureLevels
;
893 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
:
894 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB
:
895 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB
:
896 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB
:
897 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB
:
898 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
:
899 case GL_TEXTURE_CUBE_MAP_ARB
:
900 case GL_PROXY_TEXTURE_CUBE_MAP_ARB
:
901 return ctx
->Extensions
.ARB_texture_cube_map
902 ? ctx
->Const
.MaxCubeTextureLevels
: 0;
903 case GL_TEXTURE_RECTANGLE_NV
:
904 case GL_PROXY_TEXTURE_RECTANGLE_NV
:
905 return ctx
->Extensions
.NV_texture_rectangle
? 1 : 0;
906 case GL_TEXTURE_1D_ARRAY_EXT
:
907 case GL_PROXY_TEXTURE_1D_ARRAY_EXT
:
908 case GL_TEXTURE_2D_ARRAY_EXT
:
909 case GL_PROXY_TEXTURE_2D_ARRAY_EXT
:
910 return (ctx
->Extensions
.MESA_texture_array
||
911 ctx
->Extensions
.EXT_texture_array
)
912 ? ctx
->Const
.MaxTextureLevels
: 0;
913 case GL_TEXTURE_BUFFER
:
916 return 0; /* bad target */
922 * Return number of dimensions per mipmap level for the given texture target.
925 _mesa_get_texture_dimensions(GLenum target
)
929 case GL_PROXY_TEXTURE_1D
:
932 case GL_TEXTURE_RECTANGLE
:
933 case GL_TEXTURE_CUBE_MAP
:
934 case GL_PROXY_TEXTURE_2D
:
935 case GL_PROXY_TEXTURE_RECTANGLE
:
936 case GL_PROXY_TEXTURE_CUBE_MAP
:
937 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
938 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
939 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
940 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
941 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
942 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
943 case GL_TEXTURE_1D_ARRAY
:
944 case GL_PROXY_TEXTURE_1D_ARRAY
:
947 case GL_PROXY_TEXTURE_3D
:
948 case GL_TEXTURE_2D_ARRAY
:
949 case GL_PROXY_TEXTURE_2D_ARRAY
:
951 case GL_TEXTURE_BUFFER
:
954 _mesa_problem(NULL
, "invalid target 0x%x in get_texture_dimensions()",
963 #if 000 /* not used anymore */
965 * glTexImage[123]D can accept a NULL image pointer. In this case we
966 * create a texture image with unspecified image contents per the OpenGL
970 make_null_texture(GLint width
, GLint height
, GLint depth
, GLenum format
)
972 const GLint components
= _mesa_components_in_format(format
);
973 const GLint numPixels
= width
* height
* depth
;
974 GLubyte
*data
= (GLubyte
*) MALLOC(numPixels
* components
* sizeof(GLubyte
));
978 * Let's see if anyone finds this. If glTexImage2D() is called with
979 * a NULL image pointer then load the texture image with something
980 * interesting instead of leaving it indeterminate.
983 static const char message
[8][32] = {
987 " X X XXXX XXX XXXXX ",
990 " X X XXXXX XXX X X ",
994 GLubyte
*imgPtr
= data
;
996 for (h
= 0; h
< depth
; h
++) {
997 for (i
= 0; i
< height
; i
++) {
998 GLint srcRow
= 7 - (i
% 8);
999 for (j
= 0; j
< width
; j
++) {
1000 GLint srcCol
= j
% 32;
1001 GLubyte texel
= (message
[srcRow
][srcCol
]=='X') ? 255 : 70;
1002 for (k
= 0; k
< components
; k
++) {
1018 * Reset the fields of a gl_texture_image struct to zero.
1020 * \param img texture image structure.
1022 * This is called when a proxy texture test fails, we set all the
1023 * image members (except DriverData) to zero.
1024 * It's also used in glTexImage[123]D as a safeguard to be sure all
1025 * required fields get initialized properly by the Driver.TexImage[123]D
1029 clear_teximage_fields(struct gl_texture_image
*img
)
1032 img
->_BaseFormat
= 0;
1033 img
->InternalFormat
= 0;
1042 img
->HeightLog2
= 0;
1044 img
->TexFormat
= MESA_FORMAT_NONE
;
1049 * Initialize basic fields of the gl_texture_image struct.
1051 * \param ctx GL context.
1052 * \param target texture target (GL_TEXTURE_1D, GL_TEXTURE_RECTANGLE, etc).
1053 * \param img texture image structure to be initialized.
1054 * \param width image width.
1055 * \param height image height.
1056 * \param depth image depth.
1057 * \param border image border.
1058 * \param internalFormat internal format.
1059 * \param format the actual hardware format (one of MESA_FORMAT_*)
1061 * Fills in the fields of \p img with the given information.
1062 * Note: width, height and depth include the border.
1065 _mesa_init_teximage_fields(struct gl_context
*ctx
, GLenum target
,
1066 struct gl_texture_image
*img
,
1067 GLsizei width
, GLsizei height
, GLsizei depth
,
1068 GLint border
, GLenum internalFormat
,
1073 ASSERT(height
>= 0);
1076 img
->_BaseFormat
= _mesa_base_tex_format( ctx
, internalFormat
);
1077 ASSERT(img
->_BaseFormat
> 0);
1078 img
->InternalFormat
= internalFormat
;
1079 img
->Border
= border
;
1081 img
->Height
= height
;
1084 img
->Width2
= width
- 2 * border
; /* == 1 << img->WidthLog2; */
1085 img
->WidthLog2
= _mesa_logbase2(img
->Width2
);
1087 if (height
== 1) { /* 1-D texture */
1089 img
->HeightLog2
= 0;
1092 img
->Height2
= height
- 2 * border
; /* == 1 << img->HeightLog2; */
1093 img
->HeightLog2
= _mesa_logbase2(img
->Height2
);
1096 if (depth
== 1) { /* 2-D texture */
1101 img
->Depth2
= depth
- 2 * border
; /* == 1 << img->DepthLog2; */
1102 img
->DepthLog2
= _mesa_logbase2(img
->Depth2
);
1105 img
->MaxLog2
= MAX2(img
->WidthLog2
, img
->HeightLog2
);
1107 img
->TexFormat
= format
;
1112 * Free and clear fields of the gl_texture_image struct.
1114 * \param ctx GL context.
1115 * \param texImage texture image structure to be cleared.
1117 * After the call, \p texImage will have no data associated with it. Its
1118 * fields are cleared so that its parent object will test incomplete.
1121 _mesa_clear_texture_image(struct gl_context
*ctx
,
1122 struct gl_texture_image
*texImage
)
1124 ctx
->Driver
.FreeTextureImageBuffer(ctx
, texImage
);
1125 clear_teximage_fields(texImage
);
1130 * This is the fallback for Driver.TestProxyTexImage(). Test the texture
1131 * level, width, height and depth against the ctx->Const limits for textures.
1133 * A hardware driver might override this function if, for example, the
1134 * max 3D texture size is 512x512x64 (i.e. not a cube).
1136 * Note that width, height, depth == 0 is not an error. However, a
1137 * texture with zero width/height/depth will be considered "incomplete"
1138 * and texturing will effectively be disabled.
1140 * \param target one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D,
1141 * GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV,
1142 * GL_PROXY_TEXTURE_CUBE_MAP_ARB.
1143 * \param level as passed to glTexImage
1144 * \param internalFormat as passed to glTexImage
1145 * \param format as passed to glTexImage
1146 * \param type as passed to glTexImage
1147 * \param width as passed to glTexImage
1148 * \param height as passed to glTexImage
1149 * \param depth as passed to glTexImage
1150 * \param border as passed to glTexImage
1151 * \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable.
1154 _mesa_test_proxy_teximage(struct gl_context
*ctx
, GLenum target
, GLint level
,
1155 GLint internalFormat
, GLenum format
, GLenum type
,
1156 GLint width
, GLint height
, GLint depth
, GLint border
)
1160 (void) internalFormat
;
1165 case GL_PROXY_TEXTURE_1D
:
1166 maxSize
= 1 << (ctx
->Const
.MaxTextureLevels
- 1);
1167 if (width
< 2 * border
|| width
> 2 + maxSize
)
1169 if (level
>= ctx
->Const
.MaxTextureLevels
)
1171 if (!ctx
->Extensions
.ARB_texture_non_power_of_two
) {
1172 if (width
> 0 && !_mesa_is_pow_two(width
- 2 * border
))
1177 case GL_PROXY_TEXTURE_2D
:
1178 maxSize
= 1 << (ctx
->Const
.MaxTextureLevels
- 1);
1179 if (width
< 2 * border
|| width
> 2 + maxSize
)
1181 if (height
< 2 * border
|| height
> 2 + maxSize
)
1183 if (level
>= ctx
->Const
.MaxTextureLevels
)
1185 if (!ctx
->Extensions
.ARB_texture_non_power_of_two
) {
1186 if (width
> 0 && !_mesa_is_pow_two(width
- 2 * border
))
1188 if (height
> 0 && !_mesa_is_pow_two(height
- 2 * border
))
1193 case GL_PROXY_TEXTURE_3D
:
1194 maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
1195 if (width
< 2 * border
|| width
> 2 + maxSize
)
1197 if (height
< 2 * border
|| height
> 2 + maxSize
)
1199 if (depth
< 2 * border
|| depth
> 2 + maxSize
)
1201 if (level
>= ctx
->Const
.Max3DTextureLevels
)
1203 if (!ctx
->Extensions
.ARB_texture_non_power_of_two
) {
1204 if (width
> 0 && !_mesa_is_pow_two(width
- 2 * border
))
1206 if (height
> 0 && !_mesa_is_pow_two(height
- 2 * border
))
1208 if (depth
> 0 && !_mesa_is_pow_two(depth
- 2 * border
))
1213 case GL_PROXY_TEXTURE_RECTANGLE_NV
:
1214 maxSize
= ctx
->Const
.MaxTextureRectSize
;
1215 if (width
< 0 || width
> maxSize
)
1217 if (height
< 0 || height
> maxSize
)
1223 case GL_PROXY_TEXTURE_CUBE_MAP_ARB
:
1224 maxSize
= 1 << (ctx
->Const
.MaxCubeTextureLevels
- 1);
1225 if (width
< 2 * border
|| width
> 2 + maxSize
)
1227 if (height
< 2 * border
|| height
> 2 + maxSize
)
1229 if (level
>= ctx
->Const
.MaxCubeTextureLevels
)
1231 if (!ctx
->Extensions
.ARB_texture_non_power_of_two
) {
1232 if (width
> 0 && !_mesa_is_pow_two(width
- 2 * border
))
1234 if (height
> 0 && !_mesa_is_pow_two(height
- 2 * border
))
1239 case GL_PROXY_TEXTURE_1D_ARRAY_EXT
:
1240 maxSize
= 1 << (ctx
->Const
.MaxTextureLevels
- 1);
1241 if (width
< 2 * border
|| width
> 2 + maxSize
)
1243 if (height
< 1 || height
> ctx
->Const
.MaxArrayTextureLayers
)
1245 if (level
>= ctx
->Const
.MaxTextureLevels
)
1247 if (!ctx
->Extensions
.ARB_texture_non_power_of_two
) {
1248 if (width
> 0 && !_mesa_is_pow_two(width
- 2 * border
))
1253 case GL_PROXY_TEXTURE_2D_ARRAY_EXT
:
1254 maxSize
= 1 << (ctx
->Const
.MaxTextureLevels
- 1);
1255 if (width
< 2 * border
|| width
> 2 + maxSize
)
1257 if (height
< 2 * border
|| height
> 2 + maxSize
)
1259 if (depth
< 1 || depth
> ctx
->Const
.MaxArrayTextureLayers
)
1261 if (level
>= ctx
->Const
.MaxTextureLevels
)
1263 if (!ctx
->Extensions
.ARB_texture_non_power_of_two
) {
1264 if (width
> 0 && !_mesa_is_pow_two(width
- 2 * border
))
1266 if (height
> 0 && !_mesa_is_pow_two(height
- 2 * border
))
1272 _mesa_problem(ctx
, "Invalid target in _mesa_test_proxy_teximage");
1279 * Check if the memory used by the texture would exceed the driver's limit.
1280 * This lets us support a max 3D texture size of 8K (for example) but
1281 * prevents allocating a full 8K x 8K x 8K texture.
1282 * XXX this could be rolled into the proxy texture size test (above) but
1283 * we don't have the actual texture internal format at that point.
1286 legal_texture_size(struct gl_context
*ctx
, gl_format format
,
1287 GLint width
, GLint height
, GLint depth
)
1289 uint64_t bytes
= _mesa_format_image_size64(format
, width
, height
, depth
);
1290 uint64_t mbytes
= bytes
/ (1024 * 1024); /* convert to MB */
1291 return mbytes
<= (uint64_t) ctx
->Const
.MaxTextureMbytes
;
1297 * Helper function to determine whether a target and specific compression
1298 * format are supported.
1301 target_can_be_compressed(const struct gl_context
*ctx
, GLenum target
,
1304 (void) intFormat
; /* not used yet */
1308 case GL_PROXY_TEXTURE_2D
:
1309 return GL_TRUE
; /* true for any compressed format so far */
1310 case GL_PROXY_TEXTURE_CUBE_MAP
:
1311 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
1312 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
1313 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
1314 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
1315 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
1316 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
1317 return ctx
->Extensions
.ARB_texture_cube_map
;
1318 case GL_PROXY_TEXTURE_2D_ARRAY_EXT
:
1319 case GL_TEXTURE_2D_ARRAY_EXT
:
1320 return (ctx
->Extensions
.MESA_texture_array
||
1321 ctx
->Extensions
.EXT_texture_array
);
1329 * Check if the given texture target value is legal for a
1330 * glTexImage1/2/3D call.
1333 legal_teximage_target(struct gl_context
*ctx
, GLuint dims
, GLenum target
)
1339 case GL_PROXY_TEXTURE_1D
:
1347 case GL_PROXY_TEXTURE_2D
:
1349 case GL_PROXY_TEXTURE_CUBE_MAP
:
1350 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
1351 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
1352 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
1353 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
1354 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
1355 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
1356 return ctx
->Extensions
.ARB_texture_cube_map
;
1357 case GL_TEXTURE_RECTANGLE_NV
:
1358 case GL_PROXY_TEXTURE_RECTANGLE_NV
:
1359 return ctx
->Extensions
.NV_texture_rectangle
;
1360 case GL_TEXTURE_1D_ARRAY_EXT
:
1361 case GL_PROXY_TEXTURE_1D_ARRAY_EXT
:
1362 return (ctx
->Extensions
.MESA_texture_array
||
1363 ctx
->Extensions
.EXT_texture_array
);
1370 case GL_PROXY_TEXTURE_3D
:
1372 case GL_TEXTURE_2D_ARRAY_EXT
:
1373 case GL_PROXY_TEXTURE_2D_ARRAY_EXT
:
1374 return (ctx
->Extensions
.MESA_texture_array
||
1375 ctx
->Extensions
.EXT_texture_array
);
1380 _mesa_problem(ctx
, "invalid dims=%u in legal_teximage_target()", dims
);
1387 * Check if the given texture target value is legal for a
1388 * glTexSubImage, glCopyTexSubImage or glCopyTexImage call.
1389 * The difference compared to legal_teximage_target() above is that
1390 * proxy targets are not supported.
1393 legal_texsubimage_target(struct gl_context
*ctx
, GLuint dims
, GLenum target
)
1397 return target
== GL_TEXTURE_1D
;
1402 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
1403 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
1404 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
1405 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
1406 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
1407 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
1408 return ctx
->Extensions
.ARB_texture_cube_map
;
1409 case GL_TEXTURE_RECTANGLE_NV
:
1410 return ctx
->Extensions
.NV_texture_rectangle
;
1411 case GL_TEXTURE_1D_ARRAY_EXT
:
1412 return (ctx
->Extensions
.MESA_texture_array
||
1413 ctx
->Extensions
.EXT_texture_array
);
1421 case GL_TEXTURE_2D_ARRAY_EXT
:
1422 return (ctx
->Extensions
.MESA_texture_array
||
1423 ctx
->Extensions
.EXT_texture_array
);
1428 _mesa_problem(ctx
, "invalid dims=%u in legal_texsubimage_target()",
1436 * Test the glTexImage[123]D() parameters for errors.
1438 * \param ctx GL context.
1439 * \param dimensions texture image dimensions (must be 1, 2 or 3).
1440 * \param target texture target given by the user.
1441 * \param level image level given by the user.
1442 * \param internalFormat internal format given by the user.
1443 * \param format pixel data format given by the user.
1444 * \param type pixel data type given by the user.
1445 * \param width image width given by the user.
1446 * \param height image height given by the user.
1447 * \param depth image depth given by the user.
1448 * \param border image border given by the user.
1450 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
1452 * Verifies each of the parameters against the constants specified in
1453 * __struct gl_contextRec::Const and the supported extensions, and according
1454 * to the OpenGL specification.
1457 texture_error_check( struct gl_context
*ctx
,
1458 GLuint dimensions
, GLenum target
,
1459 GLint level
, GLint internalFormat
,
1460 GLenum format
, GLenum type
,
1461 GLint width
, GLint height
,
1462 GLint depth
, GLint border
)
1464 const GLenum proxyTarget
= get_proxy_target(target
);
1465 const GLboolean isProxy
= target
== proxyTarget
;
1466 GLboolean sizeOK
= GL_TRUE
;
1467 GLboolean colorFormat
;
1469 /* Even though there are no color-index textures, we still have to support
1470 * uploading color-index data and remapping it to RGB via the
1471 * GL_PIXEL_MAP_I_TO_[RGBA] tables.
1473 const GLboolean indexFormat
= (format
== GL_COLOR_INDEX
);
1475 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
1476 if (level
< 0 || level
>= MAX_TEXTURE_LEVELS
) {
1478 _mesa_error(ctx
, GL_INVALID_VALUE
,
1479 "glTexImage%dD(level=%d)", dimensions
, level
);
1485 if (border
< 0 || border
> 1 ||
1486 ((target
== GL_TEXTURE_RECTANGLE_NV
||
1487 target
== GL_PROXY_TEXTURE_RECTANGLE_NV
) && border
!= 0)) {
1489 _mesa_error(ctx
, GL_INVALID_VALUE
,
1490 "glTexImage%dD(border=%d)", dimensions
, border
);
1495 if (width
< 0 || height
< 0 || depth
< 0) {
1497 _mesa_error(ctx
, GL_INVALID_VALUE
,
1498 "glTexImage%dD(width, height or depth < 0)", dimensions
);
1503 /* Do this simple check before calling the TestProxyTexImage() function */
1504 if (proxyTarget
== GL_PROXY_TEXTURE_CUBE_MAP_ARB
) {
1505 sizeOK
= (width
== height
);
1509 * Use the proxy texture driver hook to see if the size/level/etc are
1512 sizeOK
= sizeOK
&& ctx
->Driver
.TestProxyTexImage(ctx
, proxyTarget
, level
,
1513 internalFormat
, format
,
1514 type
, width
, height
,
1518 _mesa_error(ctx
, GL_INVALID_VALUE
,
1519 "glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)",
1520 dimensions
, level
, width
, height
, depth
);
1525 /* Check internalFormat */
1526 if (_mesa_base_tex_format(ctx
, internalFormat
) < 0) {
1528 _mesa_error(ctx
, GL_INVALID_VALUE
,
1529 "glTexImage%dD(internalFormat=%s)",
1530 dimensions
, _mesa_lookup_enum_by_nr(internalFormat
));
1535 /* Check incoming image format and type */
1536 if (!_mesa_is_legal_format_and_type(ctx
, format
, type
)) {
1537 /* Normally, GL_INVALID_OPERATION is generated by a format/type
1538 * mismatch (see the 1.2 spec page 94, sec 3.6.4.). But with the
1539 * GL_EXT_texture_integer extension, some combinations should generate
1540 * GL_INVALID_ENUM instead (grr!).
1543 GLenum error
= _mesa_is_integer_format(format
)
1544 ? GL_INVALID_ENUM
: GL_INVALID_OPERATION
;
1545 _mesa_error(ctx
, error
,
1546 "glTexImage%dD(incompatible format 0x%x, type 0x%x)",
1547 dimensions
, format
, type
);
1552 /* make sure internal format and format basically agree */
1553 colorFormat
= _mesa_is_color_format(format
);
1554 if ((_mesa_is_color_format(internalFormat
) && !colorFormat
&& !indexFormat
) ||
1555 (_mesa_is_depth_format(internalFormat
) != _mesa_is_depth_format(format
)) ||
1556 (_mesa_is_ycbcr_format(internalFormat
) != _mesa_is_ycbcr_format(format
)) ||
1557 (_mesa_is_depthstencil_format(internalFormat
) != _mesa_is_depthstencil_format(format
)) ||
1558 (_mesa_is_dudv_format(internalFormat
) != _mesa_is_dudv_format(format
))) {
1560 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1561 "glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)",
1562 dimensions
, internalFormat
, format
);
1566 /* additional checks for ycbcr textures */
1567 if (internalFormat
== GL_YCBCR_MESA
) {
1568 ASSERT(ctx
->Extensions
.MESA_ycbcr_texture
);
1569 if (type
!= GL_UNSIGNED_SHORT_8_8_MESA
&&
1570 type
!= GL_UNSIGNED_SHORT_8_8_REV_MESA
) {
1572 _mesa_snprintf(message
, sizeof(message
),
1573 "glTexImage%dD(format/type YCBCR mismatch", dimensions
);
1574 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", message
);
1575 return GL_TRUE
; /* error */
1577 if (target
!= GL_TEXTURE_2D
&&
1578 target
!= GL_PROXY_TEXTURE_2D
&&
1579 target
!= GL_TEXTURE_RECTANGLE_NV
&&
1580 target
!= GL_PROXY_TEXTURE_RECTANGLE_NV
) {
1582 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexImage(target)");
1588 _mesa_snprintf(message
, sizeof(message
),
1589 "glTexImage%dD(format=GL_YCBCR_MESA and border=%d)",
1590 dimensions
, border
);
1591 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", message
);
1597 /* additional checks for depth textures */
1598 if (_mesa_base_tex_format(ctx
, internalFormat
) == GL_DEPTH_COMPONENT
) {
1599 /* Only 1D, 2D, rect and array textures supported, not 3D or cubes */
1600 if (target
!= GL_TEXTURE_1D
&&
1601 target
!= GL_PROXY_TEXTURE_1D
&&
1602 target
!= GL_TEXTURE_2D
&&
1603 target
!= GL_PROXY_TEXTURE_2D
&&
1604 target
!= GL_TEXTURE_1D_ARRAY
&&
1605 target
!= GL_PROXY_TEXTURE_1D_ARRAY
&&
1606 target
!= GL_TEXTURE_2D_ARRAY
&&
1607 target
!= GL_PROXY_TEXTURE_2D_ARRAY
&&
1608 target
!= GL_TEXTURE_RECTANGLE_ARB
&&
1609 target
!= GL_PROXY_TEXTURE_RECTANGLE_ARB
) {
1611 _mesa_error(ctx
, GL_INVALID_ENUM
,
1612 "glTexImage(target/internalFormat)");
1617 /* additional checks for compressed textures */
1618 if (_mesa_is_compressed_format(ctx
, internalFormat
)) {
1619 if (!target_can_be_compressed(ctx
, target
, internalFormat
)) {
1621 _mesa_error(ctx
, GL_INVALID_ENUM
,
1622 "glTexImage%dD(target)", dimensions
);
1627 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1628 "glTexImage%dD(border!=0)", dimensions
);
1634 /* additional checks for integer textures */
1635 if (ctx
->Extensions
.EXT_texture_integer
&&
1636 (_mesa_is_integer_format(format
) !=
1637 _mesa_is_integer_format(internalFormat
))) {
1639 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1640 "glTexImage%dD(integer/non-integer format mismatch)",
1646 /* if we get here, the parameters are OK */
1652 * Test glTexSubImage[123]D() parameters for errors.
1654 * \param ctx GL context.
1655 * \param dimensions texture image dimensions (must be 1, 2 or 3).
1656 * \param target texture target given by the user.
1657 * \param level image level given by the user.
1658 * \param xoffset sub-image x offset given by the user.
1659 * \param yoffset sub-image y offset given by the user.
1660 * \param zoffset sub-image z offset given by the user.
1661 * \param format pixel data format given by the user.
1662 * \param type pixel data type given by the user.
1663 * \param width image width given by the user.
1664 * \param height image height given by the user.
1665 * \param depth image depth given by the user.
1667 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
1669 * Verifies each of the parameters against the constants specified in
1670 * __struct gl_contextRec::Const and the supported extensions, and according
1671 * to the OpenGL specification.
1674 subtexture_error_check( struct gl_context
*ctx
, GLuint dimensions
,
1675 GLenum target
, GLint level
,
1676 GLint xoffset
, GLint yoffset
, GLint zoffset
,
1677 GLint width
, GLint height
, GLint depth
,
1678 GLenum format
, GLenum type
)
1680 /* Basic level check */
1681 if (level
< 0 || level
>= MAX_TEXTURE_LEVELS
) {
1682 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexSubImage2D(level=%d)", level
);
1686 /* Check for negative sizes */
1688 _mesa_error(ctx
, GL_INVALID_VALUE
,
1689 "glTexSubImage%dD(width=%d)", dimensions
, width
);
1692 if (height
< 0 && dimensions
> 1) {
1693 _mesa_error(ctx
, GL_INVALID_VALUE
,
1694 "glTexSubImage%dD(height=%d)", dimensions
, height
);
1697 if (depth
< 0 && dimensions
> 2) {
1698 _mesa_error(ctx
, GL_INVALID_VALUE
,
1699 "glTexSubImage%dD(depth=%d)", dimensions
, depth
);
1703 if (!_mesa_is_legal_format_and_type(ctx
, format
, type
)) {
1704 /* As with the glTexImage2D check above, the error code here
1705 * depends on texture integer.
1707 GLenum error
= _mesa_is_integer_format(format
)
1708 ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
1709 _mesa_error(ctx
, error
,
1710 "glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",
1711 dimensions
, format
, type
);
1720 * Do second part of glTexSubImage which depends on the destination texture.
1721 * \return GL_TRUE if error recorded, GL_FALSE otherwise
1724 subtexture_error_check2( struct gl_context
*ctx
, GLuint dimensions
,
1725 GLenum target
, GLint level
,
1726 GLint xoffset
, GLint yoffset
, GLint zoffset
,
1727 GLint width
, GLint height
, GLint depth
,
1728 GLenum format
, GLenum type
,
1729 const struct gl_texture_image
*destTex
)
1732 /* undefined image level */
1733 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glTexSubImage%dD", dimensions
);
1737 if (xoffset
< -((GLint
)destTex
->Border
)) {
1738 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexSubImage%dD(xoffset)",
1742 if (xoffset
+ width
> (GLint
) (destTex
->Width
+ destTex
->Border
)) {
1743 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexSubImage%dD(xoffset+width)",
1747 if (dimensions
> 1) {
1748 if (yoffset
< -((GLint
)destTex
->Border
)) {
1749 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexSubImage%dD(yoffset)",
1753 if (yoffset
+ height
> (GLint
) (destTex
->Height
+ destTex
->Border
)) {
1754 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexSubImage%dD(yoffset+height)",
1759 if (dimensions
> 2) {
1760 if (zoffset
< -((GLint
)destTex
->Border
)) {
1761 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexSubImage3D(zoffset)");
1764 if (zoffset
+ depth
> (GLint
) (destTex
->Depth
+ destTex
->Border
)) {
1765 _mesa_error(ctx
, GL_INVALID_VALUE
, "glTexSubImage3D(zoffset+depth)");
1770 if (_mesa_is_format_compressed(destTex
->TexFormat
)) {
1773 /* do tests which depend on compression block size */
1774 _mesa_get_format_block_size(destTex
->TexFormat
, &bw
, &bh
);
1776 /* offset must be multiple of block size */
1777 if ((xoffset
% bw
!= 0) || (yoffset
% bh
!= 0)) {
1778 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1779 "glTexSubImage%dD(xoffset = %d, yoffset = %d)",
1780 dimensions
, xoffset
, yoffset
);
1783 /* size must be multiple of bw by bh or equal to whole texture size */
1784 if ((width
% bw
!= 0) && (GLuint
) width
!= destTex
->Width
) {
1785 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1786 "glTexSubImage%dD(width = %d)", dimensions
, width
);
1789 if ((height
% bh
!= 0) && (GLuint
) height
!= destTex
->Height
) {
1790 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1791 "glTexSubImage%dD(height = %d)", dimensions
, height
);
1801 * Test glCopyTexImage[12]D() parameters for errors.
1803 * \param ctx GL context.
1804 * \param dimensions texture image dimensions (must be 1, 2 or 3).
1805 * \param target texture target given by the user.
1806 * \param level image level given by the user.
1807 * \param internalFormat internal format given by the user.
1808 * \param width image width given by the user.
1809 * \param height image height given by the user.
1810 * \param border texture border.
1812 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
1814 * Verifies each of the parameters against the constants specified in
1815 * __struct gl_contextRec::Const and the supported extensions, and according
1816 * to the OpenGL specification.
1819 copytexture_error_check( struct gl_context
*ctx
, GLuint dimensions
,
1820 GLenum target
, GLint level
, GLint internalFormat
,
1821 GLint width
, GLint height
, GLint border
)
1823 const GLenum proxyTarget
= get_proxy_target(target
);
1824 const GLenum type
= GL_FLOAT
;
1829 if (!legal_texsubimage_target(ctx
, dimensions
, target
)) {
1830 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCopyTexImage%uD(target=%s)",
1831 dimensions
, _mesa_lookup_enum_by_nr(target
));
1835 /* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
1836 if (level
< 0 || level
>= MAX_TEXTURE_LEVELS
) {
1837 _mesa_error(ctx
, GL_INVALID_VALUE
,
1838 "glCopyTexImage%dD(level=%d)", dimensions
, level
);
1842 /* Check that the source buffer is complete */
1843 if (ctx
->ReadBuffer
->Name
) {
1844 if (ctx
->ReadBuffer
->_Status
== 0) {
1845 _mesa_test_framebuffer_completeness(ctx
, ctx
->ReadBuffer
);
1847 if (ctx
->ReadBuffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1848 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
1849 "glCopyTexImage%dD(invalid readbuffer)", dimensions
);
1855 if (border
< 0 || border
> 1 ||
1856 ((target
== GL_TEXTURE_RECTANGLE_NV
||
1857 target
== GL_PROXY_TEXTURE_RECTANGLE_NV
) && border
!= 0)) {
1861 baseFormat
= _mesa_base_tex_format(ctx
, internalFormat
);
1862 if (baseFormat
< 0) {
1863 _mesa_error(ctx
, GL_INVALID_VALUE
,
1864 "glCopyTexImage%dD(internalFormat)", dimensions
);
1868 if (!_mesa_source_buffer_exists(ctx
, baseFormat
)) {
1869 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1870 "glCopyTexImage%dD(missing readbuffer)", dimensions
);
1874 /* Do size, level checking */
1875 sizeOK
= (proxyTarget
== GL_PROXY_TEXTURE_CUBE_MAP_ARB
)
1876 ? (width
== height
) : 1;
1878 sizeOK
= sizeOK
&& ctx
->Driver
.TestProxyTexImage(ctx
, proxyTarget
, level
,
1879 internalFormat
, baseFormat
,
1880 type
, width
, height
,
1884 if (dimensions
== 1) {
1885 _mesa_error(ctx
, GL_INVALID_VALUE
,
1886 "glCopyTexImage1D(width=%d)", width
);
1889 ASSERT(dimensions
== 2);
1890 _mesa_error(ctx
, GL_INVALID_VALUE
,
1891 "glCopyTexImage2D(width=%d, height=%d)", width
, height
);
1896 if (_mesa_is_compressed_format(ctx
, internalFormat
)) {
1897 if (!target_can_be_compressed(ctx
, target
, internalFormat
)) {
1898 _mesa_error(ctx
, GL_INVALID_ENUM
,
1899 "glCopyTexImage%dD(target)", dimensions
);
1903 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1904 "glCopyTexImage%dD(border!=0)", dimensions
);
1909 /* if we get here, the parameters are OK */
1915 * Test glCopyTexSubImage[12]D() parameters for errors.
1916 * Note that this is the first part of error checking.
1917 * See also copytexsubimage_error_check2() below for the second part.
1919 * \param ctx GL context.
1920 * \param dimensions texture image dimensions (must be 1, 2 or 3).
1921 * \param target texture target given by the user.
1922 * \param level image level given by the user.
1924 * \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
1927 copytexsubimage_error_check1( struct gl_context
*ctx
, GLuint dimensions
,
1928 GLenum target
, GLint level
)
1930 /* Check that the source buffer is complete */
1931 if (ctx
->ReadBuffer
->Name
) {
1932 if (ctx
->ReadBuffer
->_Status
== 0) {
1933 _mesa_test_framebuffer_completeness(ctx
, ctx
->ReadBuffer
);
1935 if (ctx
->ReadBuffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1936 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
1937 "glCopyTexImage%dD(invalid readbuffer)", dimensions
);
1942 /* check target (proxies not allowed) */
1943 if (!legal_texsubimage_target(ctx
, dimensions
, target
)) {
1944 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCopyTexSubImage%uD(target=%s)",
1945 dimensions
, _mesa_lookup_enum_by_nr(target
));
1950 if (level
< 0 || level
>= MAX_TEXTURE_LEVELS
) {
1951 _mesa_error(ctx
, GL_INVALID_VALUE
,
1952 "glCopyTexSubImage%dD(level=%d)", dimensions
, level
);
1961 * Second part of error checking for glCopyTexSubImage[12]D().
1962 * \param xoffset sub-image x offset given by the user.
1963 * \param yoffset sub-image y offset given by the user.
1964 * \param zoffset sub-image z offset given by the user.
1965 * \param width image width given by the user.
1966 * \param height image height given by the user.
1969 copytexsubimage_error_check2( struct gl_context
*ctx
, GLuint dimensions
,
1970 GLenum target
, GLint level
,
1971 GLint xoffset
, GLint yoffset
, GLint zoffset
,
1972 GLsizei width
, GLsizei height
,
1973 const struct gl_texture_image
*teximage
)
1975 /* check that dest tex image exists */
1977 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1978 "glCopyTexSubImage%dD(undefined texture level: %d)",
1985 _mesa_error(ctx
, GL_INVALID_VALUE
,
1986 "glCopyTexSubImage%dD(width=%d)", dimensions
, width
);
1989 if (dimensions
> 1 && height
< 0) {
1990 _mesa_error(ctx
, GL_INVALID_VALUE
,
1991 "glCopyTexSubImage%dD(height=%d)", dimensions
, height
);
1995 /* check x/y offsets */
1996 if (xoffset
< -((GLint
)teximage
->Border
)) {
1997 _mesa_error(ctx
, GL_INVALID_VALUE
,
1998 "glCopyTexSubImage%dD(xoffset=%d)", dimensions
, xoffset
);
2001 if (xoffset
+ width
> (GLint
) (teximage
->Width
+ teximage
->Border
)) {
2002 _mesa_error(ctx
, GL_INVALID_VALUE
,
2003 "glCopyTexSubImage%dD(xoffset+width)", dimensions
);
2006 if (dimensions
> 1) {
2007 if (yoffset
< -((GLint
)teximage
->Border
)) {
2008 _mesa_error(ctx
, GL_INVALID_VALUE
,
2009 "glCopyTexSubImage%dD(yoffset=%d)", dimensions
, yoffset
);
2012 /* NOTE: we're adding the border here, not subtracting! */
2013 if (yoffset
+ height
> (GLint
) (teximage
->Height
+ teximage
->Border
)) {
2014 _mesa_error(ctx
, GL_INVALID_VALUE
,
2015 "glCopyTexSubImage%dD(yoffset+height)", dimensions
);
2020 /* check z offset */
2021 if (dimensions
> 2) {
2022 if (zoffset
< -((GLint
)teximage
->Border
)) {
2023 _mesa_error(ctx
, GL_INVALID_VALUE
,
2024 "glCopyTexSubImage%dD(zoffset)", dimensions
);
2027 if (zoffset
> (GLint
) (teximage
->Depth
+ teximage
->Border
)) {
2028 _mesa_error(ctx
, GL_INVALID_VALUE
,
2029 "glCopyTexSubImage%dD(zoffset+depth)", dimensions
);
2034 if (_mesa_is_format_compressed(teximage
->TexFormat
)) {
2035 /* offset must be multiple of 4 */
2036 if ((xoffset
& 3) || (yoffset
& 3)) {
2037 _mesa_error(ctx
, GL_INVALID_VALUE
,
2038 "glCopyTexSubImage%dD(xoffset or yoffset)", dimensions
);
2041 /* size must be multiple of 4 */
2042 if ((width
& 3) != 0 && (GLuint
) width
!= teximage
->Width
) {
2043 _mesa_error(ctx
, GL_INVALID_VALUE
,
2044 "glCopyTexSubImage%dD(width)", dimensions
);
2047 if ((height
& 3) != 0 && (GLuint
) height
!= teximage
->Height
) {
2048 _mesa_error(ctx
, GL_INVALID_VALUE
,
2049 "glCopyTexSubImage%dD(height)", dimensions
);
2054 if (teximage
->InternalFormat
== GL_YCBCR_MESA
) {
2055 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glCopyTexSubImage2D");
2059 if (!_mesa_source_buffer_exists(ctx
, teximage
->_BaseFormat
)) {
2060 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2061 "glCopyTexSubImage%dD(missing readbuffer, format=0x%x)",
2062 dimensions
, teximage
->_BaseFormat
);
2066 /* If copying into an integer texture, the source buffer must also be
2069 if (_mesa_is_format_integer_color(teximage
->TexFormat
)) {
2070 struct gl_renderbuffer
*rb
= ctx
->ReadBuffer
->_ColorReadBuffer
;
2071 if (!_mesa_is_format_integer_color(rb
->Format
)) {
2072 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2073 "glCopyTexSubImage%dD(source buffer is not integer format)",
2079 /* if we get here, the parameters are OK */
2084 /** Callback info for walking over FBO hash table */
2087 struct gl_context
*ctx
;
2088 struct gl_texture_object
*texObj
;
2094 * Check render to texture callback. Called from _mesa_HashWalk().
2097 check_rtt_cb(GLuint key
, void *data
, void *userData
)
2099 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
2100 const struct cb_info
*info
= (struct cb_info
*) userData
;
2101 struct gl_context
*ctx
= info
->ctx
;
2102 const struct gl_texture_object
*texObj
= info
->texObj
;
2103 const GLuint level
= info
->level
, face
= info
->face
;
2105 /* If this is a user-created FBO */
2108 /* check if any of the FBO's attachments point to 'texObj' */
2109 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2110 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2111 if (att
->Type
== GL_TEXTURE
&&
2112 att
->Texture
== texObj
&&
2113 att
->TextureLevel
== level
&&
2114 att
->CubeMapFace
== face
) {
2115 ASSERT(_mesa_get_attachment_teximage(att
));
2116 /* Tell driver about the new renderbuffer texture */
2117 ctx
->Driver
.RenderTexture(ctx
, ctx
->DrawBuffer
, att
);
2118 /* Mark fb status as indeterminate to force re-validation */
2127 * When a texture image is specified we have to check if it's bound to
2128 * any framebuffer objects (render to texture) in order to detect changes
2129 * in size or format since that effects FBO completeness.
2130 * Any FBOs rendering into the texture must be re-validated.
2133 update_fbo_texture(struct gl_context
*ctx
, struct gl_texture_object
*texObj
,
2134 GLuint face
, GLuint level
)
2136 /* Only check this texture if it's been marked as RenderToTexture */
2137 if (texObj
->_RenderToTexture
) {
2138 struct cb_info info
;
2140 info
.texObj
= texObj
;
2143 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, check_rtt_cb
, &info
);
2149 * If the texture object's GenerateMipmap flag is set and we've
2150 * changed the texture base level image, regenerate the rest of the
2151 * mipmap levels now.
2154 check_gen_mipmap(struct gl_context
*ctx
, GLenum target
,
2155 struct gl_texture_object
*texObj
, GLint level
)
2157 ASSERT(target
!= GL_TEXTURE_CUBE_MAP
);
2158 if (texObj
->GenerateMipmap
&&
2159 level
== texObj
->BaseLevel
&&
2160 level
< texObj
->MaxLevel
) {
2161 ASSERT(ctx
->Driver
.GenerateMipmap
);
2162 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2167 /** Debug helper: override the user-requested internal format */
2169 override_internal_format(GLenum internalFormat
, GLint width
, GLint height
)
2172 if (internalFormat
== GL_RGBA16F_ARB
||
2173 internalFormat
== GL_RGBA32F_ARB
) {
2174 printf("Convert rgba float tex to int %d x %d\n", width
, height
);
2177 else if (internalFormat
== GL_RGB16F_ARB
||
2178 internalFormat
== GL_RGB32F_ARB
) {
2179 printf("Convert rgb float tex to int %d x %d\n", width
, height
);
2182 else if (internalFormat
== GL_LUMINANCE_ALPHA16F_ARB
||
2183 internalFormat
== GL_LUMINANCE_ALPHA32F_ARB
) {
2184 printf("Convert luminance float tex to int %d x %d\n", width
, height
);
2185 return GL_LUMINANCE_ALPHA
;
2187 else if (internalFormat
== GL_LUMINANCE16F_ARB
||
2188 internalFormat
== GL_LUMINANCE32F_ARB
) {
2189 printf("Convert luminance float tex to int %d x %d\n", width
, height
);
2190 return GL_LUMINANCE
;
2192 else if (internalFormat
== GL_ALPHA16F_ARB
||
2193 internalFormat
== GL_ALPHA32F_ARB
) {
2194 printf("Convert luminance float tex to int %d x %d\n", width
, height
);
2198 else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) {
2199 internalFormat = GL_RGBA;
2203 return internalFormat
;
2206 return internalFormat
;
2212 * Choose the actual hardware format for a texture image.
2213 * Try to use the same format as the previous image level when possible.
2214 * Otherwise, ask the driver for the best format.
2215 * It's important to try to choose a consistant format for all levels
2216 * for efficient texture memory layout/allocation. In particular, this
2217 * comes up during automatic mipmap generation.
2220 _mesa_choose_texture_format(struct gl_context
*ctx
,
2221 struct gl_texture_object
*texObj
,
2222 GLenum target
, GLint level
,
2223 GLenum internalFormat
, GLenum format
, GLenum type
)
2227 /* see if we've already chosen a format for the previous level */
2229 struct gl_texture_image
*prevImage
=
2230 _mesa_select_tex_image(ctx
, texObj
, target
, level
- 1);
2231 /* See if the prev level is defined and has an internal format which
2232 * matches the new internal format.
2235 prevImage
->Width
> 0 &&
2236 prevImage
->InternalFormat
== internalFormat
) {
2237 /* use the same format */
2238 ASSERT(prevImage
->TexFormat
!= MESA_FORMAT_NONE
);
2239 return prevImage
->TexFormat
;
2243 /* choose format from scratch */
2244 f
= ctx
->Driver
.ChooseTextureFormat(ctx
, internalFormat
, format
, type
);
2245 ASSERT(f
!= MESA_FORMAT_NONE
);
2250 * Adjust pixel unpack params and image dimensions to strip off the
2253 * Gallium and intel don't support texture borders. They've seldem been used
2254 * and seldom been implemented correctly anyway.
2256 * \param unpackNew returns the new pixel unpack parameters
2259 strip_texture_border(GLint
*border
,
2260 GLint
*width
, GLint
*height
, GLint
*depth
,
2261 const struct gl_pixelstore_attrib
*unpack
,
2262 struct gl_pixelstore_attrib
*unpackNew
)
2264 assert(*border
> 0); /* sanity check */
2266 *unpackNew
= *unpack
;
2268 if (unpackNew
->RowLength
== 0)
2269 unpackNew
->RowLength
= *width
;
2271 if (depth
&& unpackNew
->ImageHeight
== 0)
2272 unpackNew
->ImageHeight
= *height
;
2274 unpackNew
->SkipPixels
+= *border
;
2276 unpackNew
->SkipRows
+= *border
;
2278 unpackNew
->SkipImages
+= *border
;
2280 assert(*width
>= 3);
2281 *width
= *width
- 2 * *border
;
2282 if (height
&& *height
>= 3)
2283 *height
= *height
- 2 * *border
;
2284 if (depth
&& *depth
>= 3)
2285 *depth
= *depth
- 2 * *border
;
2290 * Common code to implement all the glTexImage1D/2D/3D functions.
2293 teximage(struct gl_context
*ctx
, GLuint dims
,
2294 GLenum target
, GLint level
, GLint internalFormat
,
2295 GLsizei width
, GLsizei height
, GLsizei depth
,
2296 GLint border
, GLenum format
, GLenum type
,
2297 const GLvoid
*pixels
)
2300 struct gl_pixelstore_attrib unpack_no_border
;
2301 const struct gl_pixelstore_attrib
*unpack
= &ctx
->Unpack
;
2303 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
2305 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
2306 _mesa_debug(ctx
, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n",
2308 _mesa_lookup_enum_by_nr(target
), level
,
2309 _mesa_lookup_enum_by_nr(internalFormat
),
2310 width
, height
, depth
, border
,
2311 _mesa_lookup_enum_by_nr(format
),
2312 _mesa_lookup_enum_by_nr(type
), pixels
);
2314 internalFormat
= override_internal_format(internalFormat
, width
, height
);
2316 /* target error checking */
2317 if (!legal_teximage_target(ctx
, dims
, target
)) {
2318 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexImage%uD(target=%s)",
2319 dims
, _mesa_lookup_enum_by_nr(target
));
2323 /* general error checking */
2324 error
= texture_error_check(ctx
, dims
, target
, level
, internalFormat
,
2325 format
, type
, width
, height
, depth
, border
);
2327 if (_mesa_is_proxy_texture(target
)) {
2328 /* Proxy texture: just clear or set state depending on error checking */
2329 struct gl_texture_image
*texImage
=
2330 _mesa_get_proxy_tex_image(ctx
, target
, level
);
2333 /* when error, clear all proxy texture image parameters */
2335 clear_teximage_fields(texImage
);
2338 /* no error, set the tex image parameters */
2339 struct gl_texture_object
*texObj
=
2340 _mesa_get_current_tex_object(ctx
, target
);
2341 gl_format texFormat
= _mesa_choose_texture_format(ctx
, texObj
,
2346 if (legal_texture_size(ctx
, texFormat
, width
, height
, depth
)) {
2347 _mesa_init_teximage_fields(ctx
, target
, texImage
, width
, height
,
2348 depth
, border
, internalFormat
,
2351 else if (texImage
) {
2352 clear_teximage_fields(texImage
);
2357 /* non-proxy target */
2358 const GLuint face
= _mesa_tex_target_to_face(target
);
2359 struct gl_texture_object
*texObj
;
2360 struct gl_texture_image
*texImage
;
2363 return; /* error was recorded */
2366 /* Allow a hardware driver to just strip out the border, to provide
2367 * reliable but slightly incorrect hardware rendering instead of
2368 * rarely-tested software fallback rendering.
2370 if (border
&& ctx
->Const
.StripTextureBorder
) {
2371 strip_texture_border(&border
, &width
, &height
, &depth
, unpack
,
2373 unpack
= &unpack_no_border
;
2376 if (ctx
->NewState
& _NEW_PIXEL
)
2377 _mesa_update_state(ctx
);
2379 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2381 _mesa_lock_texture(ctx
, texObj
);
2383 texImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
);
2386 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glTexImage%uD", dims
);
2389 gl_format texFormat
;
2391 ctx
->Driver
.FreeTextureImageBuffer(ctx
, texImage
);
2393 texFormat
= _mesa_choose_texture_format(ctx
, texObj
, target
, level
,
2394 internalFormat
, format
,
2397 if (legal_texture_size(ctx
, texFormat
, width
, height
, depth
)) {
2398 _mesa_init_teximage_fields(ctx
, target
, texImage
,
2399 width
, height
, depth
,
2400 border
, internalFormat
, texFormat
);
2402 /* Give the texture to the driver. <pixels> may be null. */
2403 ASSERT(ctx
->Driver
.TexImage3D
);
2406 ctx
->Driver
.TexImage1D(ctx
, target
, level
, internalFormat
,
2407 width
, border
, format
,
2408 type
, pixels
, unpack
, texObj
,
2412 ctx
->Driver
.TexImage2D(ctx
, target
, level
, internalFormat
,
2413 width
, height
, border
, format
,
2414 type
, pixels
, unpack
, texObj
,
2418 ctx
->Driver
.TexImage3D(ctx
, target
, level
, internalFormat
,
2419 width
, height
, depth
, border
, format
,
2420 type
, pixels
, unpack
, texObj
,
2424 _mesa_problem(ctx
, "invalid dims=%u in teximage()", dims
);
2427 check_gen_mipmap(ctx
, target
, texObj
, level
);
2429 update_fbo_texture(ctx
, texObj
, face
, level
);
2432 texObj
->_Complete
= GL_FALSE
;
2433 ctx
->NewState
|= _NEW_TEXTURE
;
2436 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glTexImage%uD", dims
);
2440 _mesa_unlock_texture(ctx
, texObj
);
2446 * Called from the API. Note that width includes the border.
2449 _mesa_TexImage1D( GLenum target
, GLint level
, GLint internalFormat
,
2450 GLsizei width
, GLint border
, GLenum format
,
2451 GLenum type
, const GLvoid
*pixels
)
2453 GET_CURRENT_CONTEXT(ctx
);
2454 teximage(ctx
, 1, target
, level
, internalFormat
, width
, 1, 1,
2455 border
, format
, type
, pixels
);
2460 _mesa_TexImage2D( GLenum target
, GLint level
, GLint internalFormat
,
2461 GLsizei width
, GLsizei height
, GLint border
,
2462 GLenum format
, GLenum type
,
2463 const GLvoid
*pixels
)
2465 GET_CURRENT_CONTEXT(ctx
);
2466 teximage(ctx
, 2, target
, level
, internalFormat
, width
, height
, 1,
2467 border
, format
, type
, pixels
);
2472 * Called by the API or display list executor.
2473 * Note that width and height include the border.
2476 _mesa_TexImage3D( GLenum target
, GLint level
, GLint internalFormat
,
2477 GLsizei width
, GLsizei height
, GLsizei depth
,
2478 GLint border
, GLenum format
, GLenum type
,
2479 const GLvoid
*pixels
)
2481 GET_CURRENT_CONTEXT(ctx
);
2482 teximage(ctx
, 3, target
, level
, internalFormat
, width
, height
, depth
,
2483 border
, format
, type
, pixels
);
2488 _mesa_TexImage3DEXT( GLenum target
, GLint level
, GLenum internalFormat
,
2489 GLsizei width
, GLsizei height
, GLsizei depth
,
2490 GLint border
, GLenum format
, GLenum type
,
2491 const GLvoid
*pixels
)
2493 _mesa_TexImage3D(target
, level
, (GLint
) internalFormat
, width
, height
,
2494 depth
, border
, format
, type
, pixels
);
2498 #if FEATURE_OES_EGL_image
2500 _mesa_EGLImageTargetTexture2DOES (GLenum target
, GLeglImageOES image
)
2502 struct gl_texture_object
*texObj
;
2503 struct gl_texture_image
*texImage
;
2504 GET_CURRENT_CONTEXT(ctx
);
2505 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
2507 if (!ctx
->Extensions
.OES_EGL_image
) {
2508 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2509 "glEGLImageTargetTexture2DOES(unsupported)");
2513 if (target
!= GL_TEXTURE_2D
) {
2514 _mesa_error(ctx
, GL_INVALID_ENUM
,
2515 "glEGLImageTargetTexture2D(target=%d)", target
);
2519 if (ctx
->NewState
& _NEW_PIXEL
)
2520 _mesa_update_state(ctx
);
2522 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2523 _mesa_lock_texture(ctx
, texObj
);
2525 texImage
= _mesa_get_tex_image(ctx
, texObj
, target
, 0);
2527 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glEGLImageTargetTexture2D");
2529 ctx
->Driver
.FreeTextureImageBuffer(ctx
, texImage
);
2531 ctx
->Driver
.EGLImageTargetTexture2D(ctx
, target
,
2532 texObj
, texImage
, image
);
2535 texObj
->_Complete
= GL_FALSE
;
2536 ctx
->NewState
|= _NEW_TEXTURE
;
2538 _mesa_unlock_texture(ctx
, texObj
);
2546 * Implement all the glTexSubImage1/2/3D() functions.
2549 texsubimage(struct gl_context
*ctx
, GLuint dims
, GLenum target
, GLint level
,
2550 GLint xoffset
, GLint yoffset
, GLint zoffset
,
2551 GLsizei width
, GLsizei height
, GLsizei depth
,
2552 GLenum format
, GLenum type
, const GLvoid
*pixels
)
2554 struct gl_texture_object
*texObj
;
2555 struct gl_texture_image
*texImage
;
2557 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
2559 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
2560 _mesa_debug(ctx
, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n",
2562 _mesa_lookup_enum_by_nr(target
), level
,
2563 xoffset
, yoffset
, zoffset
, width
, height
, depth
,
2564 _mesa_lookup_enum_by_nr(format
),
2565 _mesa_lookup_enum_by_nr(type
), pixels
);
2567 /* check target (proxies not allowed) */
2568 if (!legal_texsubimage_target(ctx
, dims
, target
)) {
2569 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexSubImage%uD(target=%s)",
2570 dims
, _mesa_lookup_enum_by_nr(target
));
2574 if (ctx
->NewState
& _NEW_PIXEL
)
2575 _mesa_update_state(ctx
);
2577 if (subtexture_error_check(ctx
, dims
, target
, level
, xoffset
, yoffset
, zoffset
,
2578 width
, height
, depth
, format
, type
)) {
2579 return; /* error was detected */
2582 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2584 _mesa_lock_texture(ctx
, texObj
);
2586 texImage
= _mesa_select_tex_image(ctx
, texObj
, target
, level
);
2588 if (subtexture_error_check2(ctx
, dims
, target
, level
,
2589 xoffset
, yoffset
, zoffset
,
2590 width
, height
, depth
,
2591 format
, type
, texImage
)) {
2592 /* error was recorded */
2594 else if (width
> 0 && height
> 0 && depth
> 0) {
2595 /* If we have a border, offset=-1 is legal. Bias by border width. */
2598 zoffset
+= texImage
->Border
;
2601 yoffset
+= texImage
->Border
;
2604 xoffset
+= texImage
->Border
;
2609 ctx
->Driver
.TexSubImage1D(ctx
, target
, level
,
2611 format
, type
, pixels
,
2612 &ctx
->Unpack
, texObj
, texImage
);
2615 ctx
->Driver
.TexSubImage2D(ctx
, target
, level
,
2616 xoffset
, yoffset
, width
, height
,
2617 format
, type
, pixels
,
2618 &ctx
->Unpack
, texObj
, texImage
);
2621 ctx
->Driver
.TexSubImage3D(ctx
, target
, level
,
2622 xoffset
, yoffset
, zoffset
,
2623 width
, height
, depth
,
2624 format
, type
, pixels
,
2625 &ctx
->Unpack
, texObj
, texImage
);
2628 _mesa_problem(ctx
, "unexpected dims in subteximage()");
2631 check_gen_mipmap(ctx
, target
, texObj
, level
);
2633 ctx
->NewState
|= _NEW_TEXTURE
;
2636 _mesa_unlock_texture(ctx
, texObj
);
2641 _mesa_TexSubImage1D( GLenum target
, GLint level
,
2642 GLint xoffset
, GLsizei width
,
2643 GLenum format
, GLenum type
,
2644 const GLvoid
*pixels
)
2646 GET_CURRENT_CONTEXT(ctx
);
2647 texsubimage(ctx
, 1, target
, level
,
2650 format
, type
, pixels
);
2655 _mesa_TexSubImage2D( GLenum target
, GLint level
,
2656 GLint xoffset
, GLint yoffset
,
2657 GLsizei width
, GLsizei height
,
2658 GLenum format
, GLenum type
,
2659 const GLvoid
*pixels
)
2661 GET_CURRENT_CONTEXT(ctx
);
2662 texsubimage(ctx
, 2, target
, level
,
2663 xoffset
, yoffset
, 0,
2665 format
, type
, pixels
);
2671 _mesa_TexSubImage3D( GLenum target
, GLint level
,
2672 GLint xoffset
, GLint yoffset
, GLint zoffset
,
2673 GLsizei width
, GLsizei height
, GLsizei depth
,
2674 GLenum format
, GLenum type
,
2675 const GLvoid
*pixels
)
2677 GET_CURRENT_CONTEXT(ctx
);
2678 texsubimage(ctx
, 3, target
, level
,
2679 xoffset
, yoffset
, zoffset
,
2680 width
, height
, depth
,
2681 format
, type
, pixels
);
2687 * Implement the glCopyTexImage1/2D() functions.
2690 copyteximage(struct gl_context
*ctx
, GLuint dims
,
2691 GLenum target
, GLint level
, GLenum internalFormat
,
2692 GLint x
, GLint y
, GLsizei width
, GLsizei height
, GLint border
)
2694 struct gl_texture_object
*texObj
;
2695 struct gl_texture_image
*texImage
;
2696 const GLuint face
= _mesa_tex_target_to_face(target
);
2698 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
2700 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
2701 _mesa_debug(ctx
, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",
2703 _mesa_lookup_enum_by_nr(target
), level
,
2704 _mesa_lookup_enum_by_nr(internalFormat
),
2705 x
, y
, width
, height
, border
);
2707 if (ctx
->NewState
& NEW_COPY_TEX_STATE
)
2708 _mesa_update_state(ctx
);
2710 if (copytexture_error_check(ctx
, dims
, target
, level
, internalFormat
,
2711 width
, height
, border
))
2714 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2716 if (border
&& ctx
->Const
.StripTextureBorder
) {
2718 width
-= border
* 2;
2721 height
-= border
* 2;
2726 _mesa_lock_texture(ctx
, texObj
);
2728 texImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
);
2731 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCopyTexImage%uD", dims
);
2734 /* choose actual hw format */
2735 gl_format texFormat
= _mesa_choose_texture_format(ctx
, texObj
,
2740 if (legal_texture_size(ctx
, texFormat
, width
, height
, 1)) {
2741 GLint srcX
= x
, srcY
= y
, dstX
= 0, dstY
= 0;
2743 /* Free old texture image */
2744 ctx
->Driver
.FreeTextureImageBuffer(ctx
, texImage
);
2746 _mesa_init_teximage_fields(ctx
, target
, texImage
, width
, height
, 1,
2747 border
, internalFormat
, texFormat
);
2749 /* Allocate texture memory (no pixel data yet) */
2751 ctx
->Driver
.TexImage1D(ctx
, target
, level
, internalFormat
,
2752 width
, border
, GL_NONE
, GL_NONE
, NULL
,
2753 &ctx
->Unpack
, texObj
, texImage
);
2756 ctx
->Driver
.TexImage2D(ctx
, target
, level
, internalFormat
,
2757 width
, height
, border
, GL_NONE
, GL_NONE
,
2758 NULL
, &ctx
->Unpack
, texObj
, texImage
);
2761 if (_mesa_clip_copytexsubimage(ctx
, &dstX
, &dstY
, &srcX
, &srcY
,
2764 ctx
->Driver
.CopyTexSubImage1D(ctx
, target
, level
, dstX
,
2768 ctx
->Driver
.CopyTexSubImage2D(ctx
, target
, level
, dstX
, dstY
,
2769 srcX
, srcY
, width
, height
);
2772 check_gen_mipmap(ctx
, target
, texObj
, level
);
2774 update_fbo_texture(ctx
, texObj
, face
, level
);
2777 texObj
->_Complete
= GL_FALSE
;
2778 ctx
->NewState
|= _NEW_TEXTURE
;
2781 /* probably too large of image */
2782 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCopyTexImage%uD", dims
);
2786 _mesa_unlock_texture(ctx
, texObj
);
2792 _mesa_CopyTexImage1D( GLenum target
, GLint level
,
2793 GLenum internalFormat
,
2795 GLsizei width
, GLint border
)
2797 GET_CURRENT_CONTEXT(ctx
);
2798 copyteximage(ctx
, 1, target
, level
, internalFormat
, x
, y
, width
, 1, border
);
2804 _mesa_CopyTexImage2D( GLenum target
, GLint level
, GLenum internalFormat
,
2805 GLint x
, GLint y
, GLsizei width
, GLsizei height
,
2808 GET_CURRENT_CONTEXT(ctx
);
2809 copyteximage(ctx
, 2, target
, level
, internalFormat
,
2810 x
, y
, width
, height
, border
);
2816 * Implementation for glCopyTexSubImage1/2/3D() functions.
2819 copytexsubimage(struct gl_context
*ctx
, GLuint dims
, GLenum target
, GLint level
,
2820 GLint xoffset
, GLint yoffset
, GLint zoffset
,
2821 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
2823 struct gl_texture_object
*texObj
;
2824 struct gl_texture_image
*texImage
;
2826 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
2828 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
2829 _mesa_debug(ctx
, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n",
2831 _mesa_lookup_enum_by_nr(target
),
2832 level
, xoffset
, yoffset
, zoffset
, x
, y
, width
, height
);
2834 if (ctx
->NewState
& NEW_COPY_TEX_STATE
)
2835 _mesa_update_state(ctx
);
2837 if (copytexsubimage_error_check1(ctx
, dims
, target
, level
))
2840 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2842 _mesa_lock_texture(ctx
, texObj
);
2844 texImage
= _mesa_select_tex_image(ctx
, texObj
, target
, level
);
2846 if (copytexsubimage_error_check2(ctx
, dims
, target
, level
, xoffset
, yoffset
,
2847 zoffset
, width
, height
, texImage
)) {
2848 /* error was recored */
2851 /* If we have a border, offset=-1 is legal. Bias by border width. */
2854 zoffset
+= texImage
->Border
;
2857 yoffset
+= texImage
->Border
;
2860 xoffset
+= texImage
->Border
;
2863 if (_mesa_clip_copytexsubimage(ctx
, &xoffset
, &yoffset
, &x
, &y
,
2867 ctx
->Driver
.CopyTexSubImage1D(ctx
, target
, level
,
2868 xoffset
, x
, y
, width
);
2871 ctx
->Driver
.CopyTexSubImage2D(ctx
, target
, level
,
2873 x
, y
, width
, height
);
2876 ctx
->Driver
.CopyTexSubImage3D(ctx
, target
, level
,
2877 xoffset
, yoffset
, zoffset
,
2878 x
, y
, width
, height
);
2881 _mesa_problem(ctx
, "bad dims in copytexsubimage()");
2884 check_gen_mipmap(ctx
, target
, texObj
, level
);
2886 ctx
->NewState
|= _NEW_TEXTURE
;
2890 _mesa_unlock_texture(ctx
, texObj
);
2895 _mesa_CopyTexSubImage1D( GLenum target
, GLint level
,
2896 GLint xoffset
, GLint x
, GLint y
, GLsizei width
)
2898 GET_CURRENT_CONTEXT(ctx
);
2899 copytexsubimage(ctx
, 1, target
, level
, xoffset
, 0, 0, x
, y
, width
, 1);
2905 _mesa_CopyTexSubImage2D( GLenum target
, GLint level
,
2906 GLint xoffset
, GLint yoffset
,
2907 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
2909 GET_CURRENT_CONTEXT(ctx
);
2910 copytexsubimage(ctx
, 2, target
, level
, xoffset
, yoffset
, 0, x
, y
,
2917 _mesa_CopyTexSubImage3D( GLenum target
, GLint level
,
2918 GLint xoffset
, GLint yoffset
, GLint zoffset
,
2919 GLint x
, GLint y
, GLsizei width
, GLsizei height
)
2921 GET_CURRENT_CONTEXT(ctx
);
2922 copytexsubimage(ctx
, 3, target
, level
, xoffset
, yoffset
, zoffset
,
2923 x
, y
, width
, height
);
2929 /**********************************************************************/
2930 /****** Compressed Textures ******/
2931 /**********************************************************************/
2935 * Return expected size of a compressed texture.
2938 compressed_tex_size(GLsizei width
, GLsizei height
, GLsizei depth
,
2941 gl_format mesaFormat
= _mesa_glenum_to_compressed_format(glformat
);
2942 return _mesa_format_image_size(mesaFormat
, width
, height
, depth
);
2947 * Return compressed texture block size, in pixels.
2950 get_compressed_block_size(GLenum glformat
, GLuint
*bw
, GLuint
*bh
)
2952 gl_format mesaFormat
= _mesa_glenum_to_compressed_format(glformat
);
2953 _mesa_get_format_block_size(mesaFormat
, bw
, bh
);
2958 * Error checking for glCompressedTexImage[123]D().
2959 * \param reason returns reason for error, if any
2960 * \return error code or GL_NO_ERROR.
2963 compressed_texture_error_check(struct gl_context
*ctx
, GLint dimensions
,
2964 GLenum target
, GLint level
,
2965 GLenum internalFormat
, GLsizei width
,
2966 GLsizei height
, GLsizei depth
, GLint border
,
2967 GLsizei imageSize
, char **reason
)
2969 const GLenum proxyTarget
= get_proxy_target(target
);
2970 const GLint maxLevels
= _mesa_max_texture_levels(ctx
, target
);
2972 GLenum choose_format
;
2974 GLenum proxy_format
;
2976 *reason
= ""; /* no error */
2978 if (!target_can_be_compressed(ctx
, target
, internalFormat
)) {
2980 return GL_INVALID_ENUM
;
2983 /* This will detect any invalid internalFormat value */
2984 if (!_mesa_is_compressed_format(ctx
, internalFormat
)) {
2985 *reason
= "internalFormat";
2986 return GL_INVALID_ENUM
;
2989 switch (internalFormat
) {
2991 case GL_PALETTE4_RGB8_OES
:
2992 case GL_PALETTE4_RGBA8_OES
:
2993 case GL_PALETTE4_R5_G6_B5_OES
:
2994 case GL_PALETTE4_RGBA4_OES
:
2995 case GL_PALETTE4_RGB5_A1_OES
:
2996 case GL_PALETTE8_RGB8_OES
:
2997 case GL_PALETTE8_RGBA8_OES
:
2998 case GL_PALETTE8_R5_G6_B5_OES
:
2999 case GL_PALETTE8_RGBA4_OES
:
3000 case GL_PALETTE8_RGB5_A1_OES
:
3001 _mesa_cpal_compressed_format_type(internalFormat
, &choose_format
,
3003 proxy_format
= choose_format
;
3006 if (level
> 0 || level
< -maxLevels
) {
3008 return GL_INVALID_VALUE
;
3011 if (dimensions
!= 2) {
3012 *reason
= "compressed paletted textures must be 2D";
3013 return GL_INVALID_OPERATION
;
3016 /* Figure out the expected texture size (in bytes). This will be
3017 * checked against the actual size later.
3019 expectedSize
= _mesa_cpal_compressed_size(level
, internalFormat
,
3022 /* This is for the benefit of the TestProxyTexImage below. It expects
3023 * level to be non-negative. OES_compressed_paletted_texture uses a
3024 * weird mechanism where the level specified to glCompressedTexImage2D
3025 * is -(n-1) number of levels in the texture, and the data specifies the
3026 * complete mipmap stack. This is done to ensure the palette is the
3027 * same for all levels.
3034 choose_format
= GL_NONE
;
3035 choose_type
= GL_NONE
;
3036 proxy_format
= internalFormat
;
3039 if (level
< 0 || level
>= maxLevels
) {
3041 return GL_INVALID_VALUE
;
3044 /* Figure out the expected texture size (in bytes). This will be
3045 * checked against the actual size later.
3047 expectedSize
= compressed_tex_size(width
, height
, depth
, internalFormat
);
3051 /* This should really never fail */
3052 if (_mesa_base_tex_format(ctx
, internalFormat
) < 0) {
3053 *reason
= "internalFormat";
3054 return GL_INVALID_ENUM
;
3057 /* No compressed formats support borders at this time */
3059 *reason
= "border != 0";
3060 return GL_INVALID_VALUE
;
3063 /* For cube map, width must equal height */
3064 if (target
>= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
&&
3065 target
<= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
&& width
!= height
) {
3066 *reason
= "width != height";
3067 return GL_INVALID_VALUE
;
3070 /* check image size against compression block size */
3072 gl_format texFormat
=
3073 ctx
->Driver
.ChooseTextureFormat(ctx
, proxy_format
,
3074 choose_format
, choose_type
);
3077 _mesa_get_format_block_size(texFormat
, &bw
, &bh
);
3078 if ((width
> bw
&& width
% bw
> 0) ||
3079 (height
> bh
&& height
% bh
> 0)) {
3081 * Per GL_ARB_texture_compression: GL_INVALID_OPERATION is
3082 * generated [...] if any parameter combinations are not
3083 * supported by the specific compressed internal format.
3085 *reason
= "invalid width or height for compression format";
3086 return GL_INVALID_OPERATION
;
3090 /* check image sizes */
3091 if (!ctx
->Driver
.TestProxyTexImage(ctx
, proxyTarget
, level
,
3092 proxy_format
, choose_format
,
3094 width
, height
, depth
, border
)) {
3095 /* See error comment above */
3096 *reason
= "invalid width, height or format";
3097 return GL_INVALID_OPERATION
;
3100 /* check image size in bytes */
3101 if (expectedSize
!= imageSize
) {
3102 /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...]
3103 * if <imageSize> is not consistent with the format, dimensions, and
3104 * contents of the specified image.
3106 *reason
= "imageSize inconsistant with width/height/format";
3107 return GL_INVALID_VALUE
;
3115 * Error checking for glCompressedTexSubImage[123]D().
3116 * \warning There are some bad assumptions here about the size of compressed
3117 * texture tiles (multiple of 4) used to test the validity of the
3118 * offset and size parameters.
3119 * \return error code or GL_NO_ERROR.
3122 compressed_subtexture_error_check(struct gl_context
*ctx
, GLint dimensions
,
3123 GLenum target
, GLint level
,
3124 GLint xoffset
, GLint yoffset
, GLint zoffset
,
3125 GLsizei width
, GLsizei height
, GLsizei depth
,
3126 GLenum format
, GLsizei imageSize
)
3128 GLint expectedSize
, maxLevels
= 0, maxTextureSize
;
3132 if (dimensions
== 1) {
3133 /* 1D compressed textures not allowed */
3134 return GL_INVALID_ENUM
;
3136 else if (dimensions
== 2) {
3137 if (target
== GL_PROXY_TEXTURE_2D
) {
3138 maxLevels
= ctx
->Const
.MaxTextureLevels
;
3140 else if (target
== GL_TEXTURE_2D
) {
3141 maxLevels
= ctx
->Const
.MaxTextureLevels
;
3143 else if (target
== GL_PROXY_TEXTURE_CUBE_MAP_ARB
) {
3144 if (!ctx
->Extensions
.ARB_texture_cube_map
)
3145 return GL_INVALID_ENUM
; /*target*/
3146 maxLevels
= ctx
->Const
.MaxCubeTextureLevels
;
3148 else if (target
>= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
&&
3149 target
<= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
) {
3150 if (!ctx
->Extensions
.ARB_texture_cube_map
)
3151 return GL_INVALID_ENUM
; /*target*/
3152 maxLevels
= ctx
->Const
.MaxCubeTextureLevels
;
3155 return GL_INVALID_ENUM
; /*target*/
3158 else if (dimensions
== 3) {
3159 /* 3D compressed textures not allowed */
3160 return GL_INVALID_ENUM
;
3163 maxTextureSize
= 1 << (maxLevels
- 1);
3165 /* this will catch any invalid compressed format token */
3166 if (!_mesa_is_compressed_format(ctx
, format
))
3167 return GL_INVALID_ENUM
;
3169 if (width
< 1 || width
> maxTextureSize
)
3170 return GL_INVALID_VALUE
;
3172 if ((height
< 1 || height
> maxTextureSize
)
3174 return GL_INVALID_VALUE
;
3176 if (level
< 0 || level
>= maxLevels
)
3177 return GL_INVALID_VALUE
;
3180 * do checks which depend on compression block size
3182 get_compressed_block_size(format
, &bw
, &bh
);
3184 if ((xoffset
% bw
!= 0) || (yoffset
% bh
!= 0))
3185 return GL_INVALID_VALUE
;
3187 if ((width
% bw
!= 0) && width
!= 2 && width
!= 1)
3188 return GL_INVALID_VALUE
;
3190 if ((height
% bh
!= 0) && height
!= 2 && height
!= 1)
3191 return GL_INVALID_VALUE
;
3193 expectedSize
= compressed_tex_size(width
, height
, depth
, format
);
3194 if (expectedSize
!= imageSize
)
3195 return GL_INVALID_VALUE
;
3202 * Do second part of glCompressedTexSubImage error checking.
3203 * \return GL_TRUE if error found, GL_FALSE otherwise.
3206 compressed_subtexture_error_check2(struct gl_context
*ctx
, GLuint dims
,
3207 GLsizei width
, GLsizei height
,
3208 GLsizei depth
, GLenum format
,
3209 struct gl_texture_image
*texImage
)
3212 if ((GLint
) format
!= texImage
->InternalFormat
) {
3213 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3214 "glCompressedTexSubImage%uD(format=0x%x)", dims
, format
);
3218 if (((width
== 1 || width
== 2) &&
3219 width
!= (GLsizei
) texImage
->Width
) ||
3220 (width
> (GLsizei
) texImage
->Width
)) {
3221 _mesa_error(ctx
, GL_INVALID_VALUE
,
3222 "glCompressedTexSubImage%uD(width=%d)", dims
, width
);
3227 if (((height
== 1 || height
== 2) &&
3228 height
!= (GLsizei
) texImage
->Height
) ||
3229 (height
> (GLsizei
) texImage
->Height
)) {
3230 _mesa_error(ctx
, GL_INVALID_VALUE
,
3231 "glCompressedTexSubImage%uD(height=%d)", dims
, height
);
3237 if (((depth
== 1 || depth
== 2) &&
3238 depth
!= (GLsizei
) texImage
->Depth
) ||
3239 (depth
> (GLsizei
) texImage
->Depth
)) {
3240 _mesa_error(ctx
, GL_INVALID_VALUE
,
3241 "glCompressedTexSubImage%uD(depth=%d)", dims
, depth
);
3251 * Implementation of the glCompressedTexImage1/2/3D() functions.
3254 compressedteximage(struct gl_context
*ctx
, GLuint dims
,
3255 GLenum target
, GLint level
,
3256 GLenum internalFormat
, GLsizei width
,
3257 GLsizei height
, GLsizei depth
, GLint border
,
3258 GLsizei imageSize
, const GLvoid
*data
)
3263 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
3265 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
3267 "glCompressedTexImage%uDARB %s %d %s %d %d %d %d %d %p\n",
3269 _mesa_lookup_enum_by_nr(target
), level
,
3270 _mesa_lookup_enum_by_nr(internalFormat
),
3271 width
, height
, depth
, border
, imageSize
, data
);
3274 if (!legal_teximage_target(ctx
, dims
, target
)) {
3275 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCompressedTexImage%uD(target=%s)",
3276 dims
, _mesa_lookup_enum_by_nr(target
));
3280 error
= compressed_texture_error_check(ctx
, dims
, target
, level
,
3281 internalFormat
, width
, height
, depth
,
3282 border
, imageSize
, &reason
);
3285 _mesa_error(ctx
, error
, "glCompressedTexImage%uD(%s)", dims
, reason
);
3290 /* XXX this is kind of a hack */
3292 switch (internalFormat
) {
3293 case GL_PALETTE4_RGB8_OES
:
3294 case GL_PALETTE4_RGBA8_OES
:
3295 case GL_PALETTE4_R5_G6_B5_OES
:
3296 case GL_PALETTE4_RGBA4_OES
:
3297 case GL_PALETTE4_RGB5_A1_OES
:
3298 case GL_PALETTE8_RGB8_OES
:
3299 case GL_PALETTE8_RGBA8_OES
:
3300 case GL_PALETTE8_R5_G6_B5_OES
:
3301 case GL_PALETTE8_RGBA4_OES
:
3302 case GL_PALETTE8_RGB5_A1_OES
:
3303 _mesa_cpal_compressed_teximage2d(target
, level
, internalFormat
,
3304 width
, height
, imageSize
, data
);
3310 if (_mesa_is_proxy_texture(target
)) {
3311 /* Proxy texture: just check for errors and update proxy state */
3312 struct gl_texture_image
*texImage
;
3315 struct gl_texture_object
*texObj
=
3316 _mesa_get_current_tex_object(ctx
, target
);
3317 gl_format texFormat
=
3318 _mesa_choose_texture_format(ctx
, texObj
, target
, level
,
3319 internalFormat
, GL_NONE
, GL_NONE
);
3320 if (!legal_texture_size(ctx
, texFormat
, width
, height
, depth
)) {
3321 error
= GL_OUT_OF_MEMORY
;
3325 texImage
= _mesa_get_proxy_tex_image(ctx
, target
, level
);
3328 /* if error, clear all proxy texture image parameters */
3329 clear_teximage_fields(texImage
);
3332 /* no error: store the teximage parameters */
3333 _mesa_init_teximage_fields(ctx
, target
, texImage
, width
, height
,
3334 depth
, border
, internalFormat
,
3340 /* non-proxy target */
3341 struct gl_texture_object
*texObj
;
3342 struct gl_texture_image
*texImage
;
3345 _mesa_error(ctx
, error
, "glCompressedTexImage%uD", dims
);
3349 texObj
= _mesa_get_current_tex_object(ctx
, target
);
3351 _mesa_lock_texture(ctx
, texObj
);
3353 texImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
);
3355 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
3356 "glCompressedTexImage%uD", dims
);
3359 gl_format texFormat
;
3361 ctx
->Driver
.FreeTextureImageBuffer(ctx
, texImage
);
3363 texFormat
= _mesa_choose_texture_format(ctx
, texObj
, target
, level
,
3364 internalFormat
, GL_NONE
,
3367 if (legal_texture_size(ctx
, texFormat
, width
, height
, depth
)) {
3368 _mesa_init_teximage_fields(ctx
, target
, texImage
,
3369 width
, height
, depth
,
3370 border
, internalFormat
, texFormat
);
3374 ASSERT(ctx
->Driver
.CompressedTexImage1D
);
3375 ctx
->Driver
.CompressedTexImage1D(ctx
, target
, level
,
3378 border
, imageSize
, data
,
3382 ASSERT(ctx
->Driver
.CompressedTexImage2D
);
3383 ctx
->Driver
.CompressedTexImage2D(ctx
, target
, level
,
3386 border
, imageSize
, data
,
3390 ASSERT(ctx
->Driver
.CompressedTexImage3D
);
3391 ctx
->Driver
.CompressedTexImage3D(ctx
, target
, level
,
3393 width
, height
, depth
,
3394 border
, imageSize
, data
,
3398 _mesa_problem(ctx
, "bad dims in compressedteximage");
3401 check_gen_mipmap(ctx
, target
, texObj
, level
);
3404 texObj
->_Complete
= GL_FALSE
;
3405 ctx
->NewState
|= _NEW_TEXTURE
;
3408 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
3409 "glCompressedTexImage%uD", dims
);
3413 _mesa_unlock_texture(ctx
, texObj
);
3419 _mesa_CompressedTexImage1DARB(GLenum target
, GLint level
,
3420 GLenum internalFormat
, GLsizei width
,
3421 GLint border
, GLsizei imageSize
,
3424 GET_CURRENT_CONTEXT(ctx
);
3425 compressedteximage(ctx
, 1, target
, level
, internalFormat
,
3426 width
, 1, 1, border
, imageSize
, data
);
3431 _mesa_CompressedTexImage2DARB(GLenum target
, GLint level
,
3432 GLenum internalFormat
, GLsizei width
,
3433 GLsizei height
, GLint border
, GLsizei imageSize
,
3436 GET_CURRENT_CONTEXT(ctx
);
3437 compressedteximage(ctx
, 2, target
, level
, internalFormat
,
3438 width
, height
, 1, border
, imageSize
, data
);
3443 _mesa_CompressedTexImage3DARB(GLenum target
, GLint level
,
3444 GLenum internalFormat
, GLsizei width
,
3445 GLsizei height
, GLsizei depth
, GLint border
,
3446 GLsizei imageSize
, const GLvoid
*data
)
3448 GET_CURRENT_CONTEXT(ctx
);
3449 compressedteximage(ctx
, 3, target
, level
, internalFormat
,
3450 width
, height
, depth
, border
, imageSize
, data
);
3455 * Common helper for glCompressedTexSubImage1/2/3D().
3458 compressed_tex_sub_image(GLuint dims
, GLenum target
, GLint level
,
3459 GLint xoffset
, GLint yoffset
, GLint zoffset
,
3460 GLsizei width
, GLsizei height
, GLsizei depth
,
3461 GLenum format
, GLsizei imageSize
, const GLvoid
*data
)
3463 struct gl_texture_object
*texObj
;
3464 struct gl_texture_image
*texImage
;
3466 GET_CURRENT_CONTEXT(ctx
);
3467 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
3469 error
= compressed_subtexture_error_check(ctx
, dims
, target
, level
,
3470 xoffset
, 0, 0, /* pos */
3471 width
, height
, depth
, /* size */
3474 _mesa_error(ctx
, error
, "glCompressedTexSubImage%uD", dims
);
3478 texObj
= _mesa_get_current_tex_object(ctx
, target
);
3480 _mesa_lock_texture(ctx
, texObj
);
3482 texImage
= _mesa_select_tex_image(ctx
, texObj
, target
, level
);
3485 if (compressed_subtexture_error_check2(ctx
, dims
, width
, height
, depth
,
3486 format
, texImage
)) {
3487 /* error was recorded */
3489 else if (width
> 0 && height
> 0 && depth
> 0) {
3492 if (ctx
->Driver
.CompressedTexSubImage1D
) {
3493 ctx
->Driver
.CompressedTexSubImage1D(ctx
, target
, level
,
3495 format
, imageSize
, data
,
3500 if (ctx
->Driver
.CompressedTexSubImage2D
) {
3501 ctx
->Driver
.CompressedTexSubImage2D(ctx
, target
, level
,
3504 format
, imageSize
, data
,
3509 if (ctx
->Driver
.CompressedTexSubImage3D
) {
3510 ctx
->Driver
.CompressedTexSubImage3D(ctx
, target
, level
,
3511 xoffset
, yoffset
, zoffset
,
3512 width
, height
, depth
,
3513 format
, imageSize
, data
,
3521 check_gen_mipmap(ctx
, target
, texObj
, level
);
3523 ctx
->NewState
|= _NEW_TEXTURE
;
3526 _mesa_unlock_texture(ctx
, texObj
);
3531 _mesa_CompressedTexSubImage1DARB(GLenum target
, GLint level
, GLint xoffset
,
3532 GLsizei width
, GLenum format
,
3533 GLsizei imageSize
, const GLvoid
*data
)
3535 compressed_tex_sub_image(1, target
, level
, xoffset
, 0, 0, width
, 1, 1,
3536 format
, imageSize
, data
);
3541 _mesa_CompressedTexSubImage2DARB(GLenum target
, GLint level
, GLint xoffset
,
3542 GLint yoffset
, GLsizei width
, GLsizei height
,
3543 GLenum format
, GLsizei imageSize
,
3546 compressed_tex_sub_image(2, target
, level
, xoffset
, yoffset
, 0,
3547 width
, height
, 1, format
, imageSize
, data
);
3552 _mesa_CompressedTexSubImage3DARB(GLenum target
, GLint level
, GLint xoffset
,
3553 GLint yoffset
, GLint zoffset
, GLsizei width
,
3554 GLsizei height
, GLsizei depth
, GLenum format
,
3555 GLsizei imageSize
, const GLvoid
*data
)
3557 compressed_tex_sub_image(3, target
, level
, xoffset
, yoffset
, zoffset
,
3558 width
, height
, depth
, format
, imageSize
, data
);
3563 * Helper for glTexBuffer(). Check if internalFormat is legal. If so,
3564 * return the basic data type and number of components for the format.
3565 * \param return GL_TRUE if internalFormat is legal, GL_FALSE otherwise
3568 get_sized_format_info(const struct gl_context
*ctx
, GLenum internalFormat
,
3569 GLenum
*datatype
, GLuint
*components
)
3571 switch (internalFormat
) {
3573 *datatype
= GL_UNSIGNED_BYTE
;
3577 *datatype
= GL_UNSIGNED_SHORT
;
3580 case GL_ALPHA16F_ARB
:
3581 *datatype
= GL_HALF_FLOAT
;
3584 case GL_ALPHA32F_ARB
:
3585 *datatype
= GL_FLOAT
;
3588 case GL_ALPHA8I_EXT
:
3589 *datatype
= GL_BYTE
;
3592 case GL_ALPHA16I_EXT
:
3593 *datatype
= GL_SHORT
;
3596 case GL_ALPHA32I_EXT
:
3600 case GL_ALPHA8UI_EXT
:
3601 *datatype
= GL_UNSIGNED_BYTE
;
3604 case GL_ALPHA16UI_EXT
:
3605 *datatype
= GL_UNSIGNED_SHORT
;
3608 case GL_ALPHA32UI_EXT
:
3609 *datatype
= GL_UNSIGNED_INT
;
3613 *datatype
= GL_UNSIGNED_BYTE
;
3616 case GL_LUMINANCE16
:
3617 *datatype
= GL_UNSIGNED_SHORT
;
3620 case GL_LUMINANCE16F_ARB
:
3621 *datatype
= GL_HALF_FLOAT
;
3624 case GL_LUMINANCE32F_ARB
:
3625 *datatype
= GL_FLOAT
;
3628 case GL_LUMINANCE8I_EXT
:
3629 *datatype
= GL_BYTE
;
3632 case GL_LUMINANCE16I_EXT
:
3633 *datatype
= GL_SHORT
;
3636 case GL_LUMINANCE32I_EXT
:
3640 case GL_LUMINANCE8UI_EXT
:
3641 *datatype
= GL_UNSIGNED_BYTE
;
3644 case GL_LUMINANCE16UI_EXT
:
3645 *datatype
= GL_UNSIGNED_SHORT
;
3648 case GL_LUMINANCE32UI_EXT
:
3649 *datatype
= GL_UNSIGNED_INT
;
3652 case GL_LUMINANCE8_ALPHA8
:
3653 *datatype
= GL_UNSIGNED_BYTE
;
3656 case GL_LUMINANCE16_ALPHA16
:
3657 *datatype
= GL_UNSIGNED_SHORT
;
3660 case GL_LUMINANCE_ALPHA16F_ARB
:
3661 *datatype
= GL_HALF_FLOAT
;
3664 case GL_LUMINANCE_ALPHA32F_ARB
:
3665 *datatype
= GL_FLOAT
;
3668 case GL_LUMINANCE_ALPHA8I_EXT
:
3669 *datatype
= GL_BYTE
;
3672 case GL_LUMINANCE_ALPHA16I_EXT
:
3673 *datatype
= GL_SHORT
;
3676 case GL_LUMINANCE_ALPHA32I_EXT
:
3680 case GL_LUMINANCE_ALPHA8UI_EXT
:
3681 *datatype
= GL_UNSIGNED_BYTE
;
3684 case GL_LUMINANCE_ALPHA16UI_EXT
:
3685 *datatype
= GL_UNSIGNED_SHORT
;
3688 case GL_LUMINANCE_ALPHA32UI_EXT
:
3689 *datatype
= GL_UNSIGNED_INT
;
3693 *datatype
= GL_UNSIGNED_BYTE
;
3696 case GL_INTENSITY16
:
3697 *datatype
= GL_UNSIGNED_SHORT
;
3700 case GL_INTENSITY16F_ARB
:
3701 *datatype
= GL_HALF_FLOAT
;
3704 case GL_INTENSITY32F_ARB
:
3705 *datatype
= GL_FLOAT
;
3708 case GL_INTENSITY8I_EXT
:
3709 *datatype
= GL_BYTE
;
3712 case GL_INTENSITY16I_EXT
:
3713 *datatype
= GL_SHORT
;
3716 case GL_INTENSITY32I_EXT
:
3720 case GL_INTENSITY8UI_EXT
:
3721 *datatype
= GL_UNSIGNED_BYTE
;
3724 case GL_INTENSITY16UI_EXT
:
3725 *datatype
= GL_UNSIGNED_SHORT
;
3728 case GL_INTENSITY32UI_EXT
:
3729 *datatype
= GL_UNSIGNED_INT
;
3733 *datatype
= GL_UNSIGNED_BYTE
;
3737 *datatype
= GL_UNSIGNED_SHORT
;
3740 case GL_RGBA16F_ARB
:
3741 *datatype
= GL_HALF_FLOAT
;
3744 case GL_RGBA32F_ARB
:
3745 *datatype
= GL_FLOAT
;
3749 *datatype
= GL_BYTE
;
3752 case GL_RGBA16I_EXT
:
3753 *datatype
= GL_SHORT
;
3756 case GL_RGBA32I_EXT
:
3760 case GL_RGBA8UI_EXT
:
3761 *datatype
= GL_UNSIGNED_BYTE
;
3764 case GL_RGBA16UI_EXT
:
3765 *datatype
= GL_UNSIGNED_SHORT
;
3768 case GL_RGBA32UI_EXT
:
3769 *datatype
= GL_UNSIGNED_INT
;
3776 if (*datatype
== GL_FLOAT
&& !ctx
->Extensions
.ARB_texture_float
)
3779 if (*datatype
== GL_HALF_FLOAT
&& !ctx
->Extensions
.ARB_half_float_pixel
)
3786 /** GL_ARB_texture_buffer_object */
3788 _mesa_TexBuffer(GLenum target
, GLenum internalFormat
, GLuint buffer
)
3790 struct gl_texture_object
*texObj
;
3791 struct gl_buffer_object
*bufObj
;
3795 GET_CURRENT_CONTEXT(ctx
);
3796 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
3798 if (!ctx
->Extensions
.ARB_texture_buffer_object
) {
3799 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glTexBuffer");
3803 if (target
!= GL_TEXTURE_BUFFER_ARB
) {
3804 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexBuffer(target)");
3808 if (!get_sized_format_info(ctx
, internalFormat
, &dataType
, &comps
)) {
3809 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexBuffer(internalFormat 0x%x)",
3814 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3815 if (buffer
&& !bufObj
) {
3816 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glTexBuffer(buffer %u)", buffer
);
3820 texObj
= _mesa_get_current_tex_object(ctx
, target
);
3822 _mesa_lock_texture(ctx
, texObj
);
3824 _mesa_reference_buffer_object(ctx
, &texObj
->BufferObject
, bufObj
);
3825 texObj
->BufferObjectFormat
= internalFormat
;
3827 _mesa_unlock_texture(ctx
, texObj
);