3 * Texture object management.
7 * Mesa 3-D graphics library
9 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
25 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
26 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
27 * OTHER DEALINGS IN THE SOFTWARE.
31 #include "bufferobj.h"
44 #include "program/prog_instruction.h"
48 /**********************************************************************/
49 /** \name Internal functions */
54 * Return the gl_texture_object for a given ID.
56 struct gl_texture_object
*
57 _mesa_lookup_texture(struct gl_context
*ctx
, GLuint id
)
59 return (struct gl_texture_object
*)
60 _mesa_HashLookup(ctx
->Shared
->TexObjects
, id
);
66 * Allocate and initialize a new texture object. But don't put it into the
67 * texture object hash table.
69 * Called via ctx->Driver.NewTextureObject, unless overridden by a device
72 * \param shared the shared GL state structure to contain the texture object
73 * \param name integer name for the texture object
74 * \param target either GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D,
75 * GL_TEXTURE_CUBE_MAP_ARB or GL_TEXTURE_RECTANGLE_NV. zero is ok for the sake
78 * \return pointer to new texture object.
80 struct gl_texture_object
*
81 _mesa_new_texture_object( struct gl_context
*ctx
, GLuint name
, GLenum target
)
83 struct gl_texture_object
*obj
;
85 obj
= MALLOC_STRUCT(gl_texture_object
);
86 _mesa_initialize_texture_object(ctx
, obj
, name
, target
);
92 * Initialize a new texture object to default values.
93 * \param obj the texture object
94 * \param name the texture name
95 * \param target the texture target
98 _mesa_initialize_texture_object( struct gl_context
*ctx
,
99 struct gl_texture_object
*obj
,
100 GLuint name
, GLenum target
)
102 ASSERT(target
== 0 ||
103 target
== GL_TEXTURE_1D
||
104 target
== GL_TEXTURE_2D
||
105 target
== GL_TEXTURE_3D
||
106 target
== GL_TEXTURE_CUBE_MAP_ARB
||
107 target
== GL_TEXTURE_RECTANGLE_NV
||
108 target
== GL_TEXTURE_1D_ARRAY_EXT
||
109 target
== GL_TEXTURE_2D_ARRAY_EXT
||
110 target
== GL_TEXTURE_EXTERNAL_OES
||
111 target
== GL_TEXTURE_CUBE_MAP_ARRAY
||
112 target
== GL_TEXTURE_BUFFER
||
113 target
== GL_TEXTURE_2D_MULTISAMPLE
||
114 target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
116 memset(obj
, 0, sizeof(*obj
));
117 /* init the non-zero fields */
118 _glthread_INIT_MUTEX(obj
->Mutex
);
121 obj
->Target
= target
;
122 obj
->Priority
= 1.0F
;
124 obj
->MaxLevel
= 1000;
126 /* must be one; no support for (YUV) planes in separate buffers */
127 obj
->RequiredTextureImageUnits
= 1;
130 if (target
== GL_TEXTURE_RECTANGLE_NV
||
131 target
== GL_TEXTURE_EXTERNAL_OES
) {
132 obj
->Sampler
.WrapS
= GL_CLAMP_TO_EDGE
;
133 obj
->Sampler
.WrapT
= GL_CLAMP_TO_EDGE
;
134 obj
->Sampler
.WrapR
= GL_CLAMP_TO_EDGE
;
135 obj
->Sampler
.MinFilter
= GL_LINEAR
;
138 obj
->Sampler
.WrapS
= GL_REPEAT
;
139 obj
->Sampler
.WrapT
= GL_REPEAT
;
140 obj
->Sampler
.WrapR
= GL_REPEAT
;
141 obj
->Sampler
.MinFilter
= GL_NEAREST_MIPMAP_LINEAR
;
143 obj
->Sampler
.MagFilter
= GL_LINEAR
;
144 obj
->Sampler
.MinLod
= -1000.0;
145 obj
->Sampler
.MaxLod
= 1000.0;
146 obj
->Sampler
.LodBias
= 0.0;
147 obj
->Sampler
.MaxAnisotropy
= 1.0;
148 obj
->Sampler
.CompareMode
= GL_NONE
; /* ARB_shadow */
149 obj
->Sampler
.CompareFunc
= GL_LEQUAL
; /* ARB_shadow */
150 obj
->DepthMode
= ctx
->API
== API_OPENGL_CORE
? GL_RED
: GL_LUMINANCE
;
151 obj
->Sampler
.CubeMapSeamless
= GL_FALSE
;
152 obj
->Swizzle
[0] = GL_RED
;
153 obj
->Swizzle
[1] = GL_GREEN
;
154 obj
->Swizzle
[2] = GL_BLUE
;
155 obj
->Swizzle
[3] = GL_ALPHA
;
156 obj
->_Swizzle
= SWIZZLE_NOOP
;
157 obj
->Sampler
.sRGBDecode
= GL_DECODE_EXT
;
158 obj
->BufferObjectFormat
= GL_R8
;
159 obj
->_BufferObjectFormat
= MESA_FORMAT_R_UNORM8
;
160 obj
->ImageFormatCompatibilityType
= GL_IMAGE_FORMAT_COMPATIBILITY_BY_SIZE
;
165 * Some texture initialization can't be finished until we know which
166 * target it's getting bound to (GL_TEXTURE_1D/2D/etc).
169 finish_texture_init(struct gl_context
*ctx
, GLenum target
,
170 struct gl_texture_object
*obj
)
172 GLenum filter
= GL_LINEAR
;
173 assert(obj
->Target
== 0);
176 case GL_TEXTURE_2D_MULTISAMPLE
:
177 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
181 case GL_TEXTURE_RECTANGLE_NV
:
182 case GL_TEXTURE_EXTERNAL_OES
:
183 /* have to init wrap and filter state here - kind of klunky */
184 obj
->Sampler
.WrapS
= GL_CLAMP_TO_EDGE
;
185 obj
->Sampler
.WrapT
= GL_CLAMP_TO_EDGE
;
186 obj
->Sampler
.WrapR
= GL_CLAMP_TO_EDGE
;
187 obj
->Sampler
.MinFilter
= filter
;
188 obj
->Sampler
.MagFilter
= filter
;
189 if (ctx
->Driver
.TexParameter
) {
190 static const GLfloat fparam_wrap
[1] = {(GLfloat
) GL_CLAMP_TO_EDGE
};
191 const GLfloat fparam_filter
[1] = {(GLfloat
) filter
};
192 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_S
, fparam_wrap
);
193 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_T
, fparam_wrap
);
194 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_R
, fparam_wrap
);
195 ctx
->Driver
.TexParameter(ctx
, obj
,
196 GL_TEXTURE_MIN_FILTER
, fparam_filter
);
197 ctx
->Driver
.TexParameter(ctx
, obj
,
198 GL_TEXTURE_MAG_FILTER
, fparam_filter
);
203 /* nothing needs done */
210 * Deallocate a texture object struct. It should have already been
211 * removed from the texture object pool.
212 * Called via ctx->Driver.DeleteTexture() if not overriden by a driver.
214 * \param shared the shared GL state to which the object belongs.
215 * \param texObj the texture object to delete.
218 _mesa_delete_texture_object(struct gl_context
*ctx
,
219 struct gl_texture_object
*texObj
)
223 /* Set Target to an invalid value. With some assertions elsewhere
224 * we can try to detect possible use of deleted textures.
226 texObj
->Target
= 0x99;
228 /* free the texture images */
229 for (face
= 0; face
< 6; face
++) {
230 for (i
= 0; i
< MAX_TEXTURE_LEVELS
; i
++) {
231 if (texObj
->Image
[face
][i
]) {
232 ctx
->Driver
.DeleteTextureImage(ctx
, texObj
->Image
[face
][i
]);
237 _mesa_reference_buffer_object(ctx
, &texObj
->BufferObject
, NULL
);
239 /* destroy the mutex -- it may have allocated memory (eg on bsd) */
240 _glthread_DESTROY_MUTEX(texObj
->Mutex
);
244 /* free this object */
251 * Copy texture object state from one texture object to another.
252 * Use for glPush/PopAttrib.
254 * \param dest destination texture object.
255 * \param src source texture object.
258 _mesa_copy_texture_object( struct gl_texture_object
*dest
,
259 const struct gl_texture_object
*src
)
261 dest
->Target
= src
->Target
;
262 dest
->Name
= src
->Name
;
263 dest
->Priority
= src
->Priority
;
264 dest
->Sampler
.BorderColor
.f
[0] = src
->Sampler
.BorderColor
.f
[0];
265 dest
->Sampler
.BorderColor
.f
[1] = src
->Sampler
.BorderColor
.f
[1];
266 dest
->Sampler
.BorderColor
.f
[2] = src
->Sampler
.BorderColor
.f
[2];
267 dest
->Sampler
.BorderColor
.f
[3] = src
->Sampler
.BorderColor
.f
[3];
268 dest
->Sampler
.WrapS
= src
->Sampler
.WrapS
;
269 dest
->Sampler
.WrapT
= src
->Sampler
.WrapT
;
270 dest
->Sampler
.WrapR
= src
->Sampler
.WrapR
;
271 dest
->Sampler
.MinFilter
= src
->Sampler
.MinFilter
;
272 dest
->Sampler
.MagFilter
= src
->Sampler
.MagFilter
;
273 dest
->Sampler
.MinLod
= src
->Sampler
.MinLod
;
274 dest
->Sampler
.MaxLod
= src
->Sampler
.MaxLod
;
275 dest
->Sampler
.LodBias
= src
->Sampler
.LodBias
;
276 dest
->BaseLevel
= src
->BaseLevel
;
277 dest
->MaxLevel
= src
->MaxLevel
;
278 dest
->Sampler
.MaxAnisotropy
= src
->Sampler
.MaxAnisotropy
;
279 dest
->Sampler
.CompareMode
= src
->Sampler
.CompareMode
;
280 dest
->Sampler
.CompareFunc
= src
->Sampler
.CompareFunc
;
281 dest
->Sampler
.CubeMapSeamless
= src
->Sampler
.CubeMapSeamless
;
282 dest
->DepthMode
= src
->DepthMode
;
283 dest
->Sampler
.sRGBDecode
= src
->Sampler
.sRGBDecode
;
284 dest
->_MaxLevel
= src
->_MaxLevel
;
285 dest
->_MaxLambda
= src
->_MaxLambda
;
286 dest
->GenerateMipmap
= src
->GenerateMipmap
;
287 dest
->_BaseComplete
= src
->_BaseComplete
;
288 dest
->_MipmapComplete
= src
->_MipmapComplete
;
289 COPY_4V(dest
->Swizzle
, src
->Swizzle
);
290 dest
->_Swizzle
= src
->_Swizzle
;
292 dest
->RequiredTextureImageUnits
= src
->RequiredTextureImageUnits
;
297 * Free all texture images of the given texture object.
299 * \param ctx GL context.
300 * \param t texture object.
302 * \sa _mesa_clear_texture_image().
305 _mesa_clear_texture_object(struct gl_context
*ctx
,
306 struct gl_texture_object
*texObj
)
310 if (texObj
->Target
== 0)
313 for (i
= 0; i
< MAX_FACES
; i
++) {
314 for (j
= 0; j
< MAX_TEXTURE_LEVELS
; j
++) {
315 struct gl_texture_image
*texImage
= texObj
->Image
[i
][j
];
317 _mesa_clear_texture_image(ctx
, texImage
);
324 * Check if the given texture object is valid by examining its Target field.
325 * For debugging only.
328 valid_texture_object(const struct gl_texture_object
*tex
)
330 switch (tex
->Target
) {
335 case GL_TEXTURE_CUBE_MAP_ARB
:
336 case GL_TEXTURE_RECTANGLE_NV
:
337 case GL_TEXTURE_1D_ARRAY_EXT
:
338 case GL_TEXTURE_2D_ARRAY_EXT
:
339 case GL_TEXTURE_BUFFER
:
340 case GL_TEXTURE_EXTERNAL_OES
:
341 case GL_TEXTURE_CUBE_MAP_ARRAY
:
342 case GL_TEXTURE_2D_MULTISAMPLE
:
343 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
346 _mesa_problem(NULL
, "invalid reference to a deleted texture object");
349 _mesa_problem(NULL
, "invalid texture object Target 0x%x, Id = %u",
350 tex
->Target
, tex
->Name
);
357 * Reference (or unreference) a texture object.
358 * If '*ptr', decrement *ptr's refcount (and delete if it becomes zero).
359 * If 'tex' is non-null, increment its refcount.
360 * This is normally only called from the _mesa_reference_texobj() macro
361 * when there's a real pointer change.
364 _mesa_reference_texobj_(struct gl_texture_object
**ptr
,
365 struct gl_texture_object
*tex
)
370 /* Unreference the old texture */
371 GLboolean deleteFlag
= GL_FALSE
;
372 struct gl_texture_object
*oldTex
= *ptr
;
374 ASSERT(valid_texture_object(oldTex
));
375 (void) valid_texture_object
; /* silence warning in release builds */
377 _glthread_LOCK_MUTEX(oldTex
->Mutex
);
378 ASSERT(oldTex
->RefCount
> 0);
381 deleteFlag
= (oldTex
->RefCount
== 0);
382 _glthread_UNLOCK_MUTEX(oldTex
->Mutex
);
385 GET_CURRENT_CONTEXT(ctx
);
387 ctx
->Driver
.DeleteTexture(ctx
, oldTex
);
389 _mesa_problem(NULL
, "Unable to delete texture, no context");
397 /* reference new texture */
398 ASSERT(valid_texture_object(tex
));
399 _glthread_LOCK_MUTEX(tex
->Mutex
);
400 if (tex
->RefCount
== 0) {
401 /* this texture's being deleted (look just above) */
402 /* Not sure this can every really happen. Warn if it does. */
403 _mesa_problem(NULL
, "referencing deleted texture object");
410 _glthread_UNLOCK_MUTEX(tex
->Mutex
);
415 enum base_mipmap
{ BASE
, MIPMAP
};
419 * Mark a texture object as incomplete. There are actually three kinds of
421 * 1. "base incomplete": the base level of the texture is invalid so no
422 * texturing is possible.
423 * 2. "mipmap incomplete": a non-base level of the texture is invalid so
424 * mipmap filtering isn't possible, but non-mipmap filtering is.
425 * 3. "texture incompleteness": some combination of texture state and
426 * sampler state renders the texture incomplete.
428 * \param t texture object
429 * \param bm either BASE or MIPMAP to indicate what's incomplete
430 * \param fmt... string describing why it's incomplete (for debugging).
433 incomplete(struct gl_texture_object
*t
, enum base_mipmap bm
,
434 const char *fmt
, ...)
436 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_TEXTURE
) {
441 vsnprintf(s
, sizeof(s
), fmt
, args
);
444 _mesa_debug(NULL
, "Texture Obj %d incomplete because: %s\n", t
->Name
, s
);
448 t
->_BaseComplete
= GL_FALSE
;
449 t
->_MipmapComplete
= GL_FALSE
;
454 * Examine a texture object to determine if it is complete.
456 * The gl_texture_object::Complete flag will be set to GL_TRUE or GL_FALSE
459 * \param ctx GL context.
460 * \param t texture object.
462 * According to the texture target, verifies that each of the mipmaps is
463 * present and has the expected size.
466 _mesa_test_texobj_completeness( const struct gl_context
*ctx
,
467 struct gl_texture_object
*t
)
469 const GLint baseLevel
= t
->BaseLevel
;
470 const struct gl_texture_image
*baseImage
;
473 /* We'll set these to FALSE if tests fail below */
474 t
->_BaseComplete
= GL_TRUE
;
475 t
->_MipmapComplete
= GL_TRUE
;
477 if (t
->Target
== GL_TEXTURE_BUFFER
) {
478 /* Buffer textures are always considered complete. The obvious case where
479 * they would be incomplete (no BO attached) is actually specced to be
480 * undefined rendering results.
485 /* Detect cases where the application set the base level to an invalid
488 if ((baseLevel
< 0) || (baseLevel
>= MAX_TEXTURE_LEVELS
)) {
489 incomplete(t
, BASE
, "base level = %d is invalid", baseLevel
);
493 if (t
->MaxLevel
< baseLevel
) {
494 incomplete(t
, MIPMAP
, "MAX_LEVEL (%d) < BASE_LEVEL (%d)",
495 t
->MaxLevel
, baseLevel
);
499 baseImage
= t
->Image
[0][baseLevel
];
501 /* Always need the base level image */
503 incomplete(t
, BASE
, "Image[baseLevel=%d] == NULL", baseLevel
);
507 /* Check width/height/depth for zero */
508 if (baseImage
->Width
== 0 ||
509 baseImage
->Height
== 0 ||
510 baseImage
->Depth
== 0) {
511 incomplete(t
, BASE
, "texture width or height or depth = 0");
515 /* Check if the texture values are integer */
517 GLenum datatype
= _mesa_get_format_datatype(baseImage
->TexFormat
);
518 t
->_IsIntegerFormat
= datatype
== GL_INT
|| datatype
== GL_UNSIGNED_INT
;
521 /* Compute _MaxLevel (the maximum mipmap level we'll sample from given the
522 * mipmap image sizes and GL_TEXTURE_MAX_LEVEL state).
526 case GL_TEXTURE_1D_ARRAY_EXT
:
527 maxLevels
= ctx
->Const
.MaxTextureLevels
;
530 case GL_TEXTURE_2D_ARRAY_EXT
:
531 maxLevels
= ctx
->Const
.MaxTextureLevels
;
534 maxLevels
= ctx
->Const
.Max3DTextureLevels
;
536 case GL_TEXTURE_CUBE_MAP_ARB
:
537 case GL_TEXTURE_CUBE_MAP_ARRAY
:
538 maxLevels
= ctx
->Const
.MaxCubeTextureLevels
;
540 case GL_TEXTURE_RECTANGLE_NV
:
541 case GL_TEXTURE_BUFFER
:
542 case GL_TEXTURE_EXTERNAL_OES
:
543 case GL_TEXTURE_2D_MULTISAMPLE
:
544 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
545 maxLevels
= 1; /* no mipmapping */
548 _mesa_problem(ctx
, "Bad t->Target in _mesa_test_texobj_completeness");
552 ASSERT(maxLevels
> 0);
554 t
->_MaxLevel
= MIN3(t
->MaxLevel
,
555 /* 'p' in the GL spec */
556 (int) (baseLevel
+ baseImage
->MaxNumLevels
- 1),
557 /* 'q' in the GL spec */
560 /* Compute _MaxLambda = q - p in the spec used during mipmapping */
561 t
->_MaxLambda
= (GLfloat
) (t
->_MaxLevel
- baseLevel
);
564 /* This texture object was created with glTexStorage1/2/3D() so we
565 * know that all the mipmap levels are the right size and all cube
566 * map faces are the same size.
567 * We don't need to do any of the additional checks below.
572 if (t
->Target
== GL_TEXTURE_CUBE_MAP_ARB
) {
573 /* Make sure that all six cube map level 0 images are the same size.
574 * Note: we know that the image's width==height (we enforce that
575 * at glTexImage time) so we only need to test the width here.
578 assert(baseImage
->Width2
== baseImage
->Height
);
579 for (face
= 1; face
< 6; face
++) {
580 assert(t
->Image
[face
][baseLevel
] == NULL
||
581 t
->Image
[face
][baseLevel
]->Width2
==
582 t
->Image
[face
][baseLevel
]->Height2
);
583 if (t
->Image
[face
][baseLevel
] == NULL
||
584 t
->Image
[face
][baseLevel
]->Width2
!= baseImage
->Width2
) {
585 incomplete(t
, BASE
, "Cube face missing or mismatched size");
592 * Do mipmap consistency checking.
593 * Note: we don't care about the current texture sampler state here.
594 * To determine texture completeness we'll either look at _BaseComplete
595 * or _MipmapComplete depending on the current minification filter mode.
599 const GLint minLevel
= baseLevel
;
600 const GLint maxLevel
= t
->_MaxLevel
;
601 const GLuint numFaces
= _mesa_num_tex_faces(t
->Target
);
602 GLuint width
, height
, depth
, face
;
604 if (minLevel
> maxLevel
) {
605 incomplete(t
, MIPMAP
, "minLevel > maxLevel");
609 /* Get the base image's dimensions */
610 width
= baseImage
->Width2
;
611 height
= baseImage
->Height2
;
612 depth
= baseImage
->Depth2
;
614 /* Note: this loop will be a no-op for RECT, BUFFER, EXTERNAL,
615 * MULTISAMPLE and MULTISAMPLE_ARRAY textures
617 for (i
= baseLevel
+ 1; i
< maxLevels
; i
++) {
618 /* Compute the expected size of image at level[i] */
622 if (height
> 1 && t
->Target
!= GL_TEXTURE_1D_ARRAY
) {
625 if (depth
> 1 && t
->Target
!= GL_TEXTURE_2D_ARRAY
&& t
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) {
629 /* loop over cube faces (or single face otherwise) */
630 for (face
= 0; face
< numFaces
; face
++) {
631 if (i
>= minLevel
&& i
<= maxLevel
) {
632 const struct gl_texture_image
*img
= t
->Image
[face
][i
];
635 incomplete(t
, MIPMAP
, "TexImage[%d] is missing", i
);
638 if (img
->TexFormat
!= baseImage
->TexFormat
) {
639 incomplete(t
, MIPMAP
, "Format[i] != Format[baseLevel]");
642 if (img
->Border
!= baseImage
->Border
) {
643 incomplete(t
, MIPMAP
, "Border[i] != Border[baseLevel]");
646 if (img
->Width2
!= width
) {
647 incomplete(t
, MIPMAP
, "TexImage[%d] bad width %u", i
, img
->Width2
);
650 if (img
->Height2
!= height
) {
651 incomplete(t
, MIPMAP
, "TexImage[%d] bad height %u", i
, img
->Height2
);
654 if (img
->Depth2
!= depth
) {
655 incomplete(t
, MIPMAP
, "TexImage[%d] bad depth %u", i
, img
->Depth2
);
659 /* Extra checks for cube textures */
661 /* check that cube faces are the same size */
662 if (img
->Width2
!= t
->Image
[0][i
]->Width2
||
663 img
->Height2
!= t
->Image
[0][i
]->Height2
) {
664 incomplete(t
, MIPMAP
, "CubeMap Image[n][i] bad size");
671 if (width
== 1 && height
== 1 && depth
== 1) {
672 return; /* found smallest needed mipmap, all done! */
680 * Check if the given cube map texture is "cube complete" as defined in
681 * the OpenGL specification.
684 _mesa_cube_complete(const struct gl_texture_object
*texObj
)
686 const GLint baseLevel
= texObj
->BaseLevel
;
687 const struct gl_texture_image
*img0
, *img
;
690 if (texObj
->Target
!= GL_TEXTURE_CUBE_MAP
)
693 if ((baseLevel
< 0) || (baseLevel
>= MAX_TEXTURE_LEVELS
))
696 /* check first face */
697 img0
= texObj
->Image
[0][baseLevel
];
700 img0
->Width
!= img0
->Height
)
703 /* check remaining faces vs. first face */
704 for (face
= 1; face
< 6; face
++) {
705 img
= texObj
->Image
[face
][baseLevel
];
707 img
->Width
!= img0
->Width
||
708 img
->Height
!= img0
->Height
||
709 img
->TexFormat
!= img0
->TexFormat
)
718 * Mark a texture object dirty. It forces the object to be incomplete
719 * and forces the context to re-validate its state.
721 * \param ctx GL context.
722 * \param texObj texture object.
725 _mesa_dirty_texobj(struct gl_context
*ctx
, struct gl_texture_object
*texObj
)
727 texObj
->_BaseComplete
= GL_FALSE
;
728 texObj
->_MipmapComplete
= GL_FALSE
;
729 ctx
->NewState
|= _NEW_TEXTURE
;
734 * Return pointer to a default/fallback texture of the given type/target.
735 * The texture is an RGBA texture with all texels = (0,0,0,1).
736 * That's the value a GLSL sampler should get when sampling from an
737 * incomplete texture.
739 struct gl_texture_object
*
740 _mesa_get_fallback_texture(struct gl_context
*ctx
, gl_texture_index tex
)
742 if (!ctx
->Shared
->FallbackTex
[tex
]) {
743 /* create fallback texture now */
744 const GLsizei width
= 1, height
= 1, depth
= 1;
746 struct gl_texture_object
*texObj
;
747 struct gl_texture_image
*texImage
;
748 mesa_format texFormat
;
749 GLuint dims
, face
, numFaces
= 1;
758 case TEXTURE_2D_ARRAY_INDEX
:
760 target
= GL_TEXTURE_2D_ARRAY
;
762 case TEXTURE_1D_ARRAY_INDEX
:
764 target
= GL_TEXTURE_1D_ARRAY
;
766 case TEXTURE_CUBE_INDEX
:
768 target
= GL_TEXTURE_CUBE_MAP
;
771 case TEXTURE_3D_INDEX
:
773 target
= GL_TEXTURE_3D
;
775 case TEXTURE_RECT_INDEX
:
777 target
= GL_TEXTURE_RECTANGLE
;
779 case TEXTURE_2D_INDEX
:
781 target
= GL_TEXTURE_2D
;
783 case TEXTURE_1D_INDEX
:
785 target
= GL_TEXTURE_1D
;
787 case TEXTURE_BUFFER_INDEX
:
789 target
= GL_TEXTURE_BUFFER
;
791 case TEXTURE_CUBE_ARRAY_INDEX
:
793 target
= GL_TEXTURE_CUBE_MAP_ARRAY
;
795 case TEXTURE_EXTERNAL_INDEX
:
797 target
= GL_TEXTURE_EXTERNAL_OES
;
799 case TEXTURE_2D_MULTISAMPLE_INDEX
:
801 target
= GL_TEXTURE_2D_MULTISAMPLE
;
803 case TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
:
805 target
= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
;
812 /* create texture object */
813 texObj
= ctx
->Driver
.NewTextureObject(ctx
, 0, target
);
817 assert(texObj
->RefCount
== 1);
818 texObj
->Sampler
.MinFilter
= GL_NEAREST
;
819 texObj
->Sampler
.MagFilter
= GL_NEAREST
;
821 texFormat
= ctx
->Driver
.ChooseTextureFormat(ctx
, target
,
825 /* need a loop here just for cube maps */
826 for (face
= 0; face
< numFaces
; face
++) {
829 if (target
== GL_TEXTURE_CUBE_MAP
)
830 faceTarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ face
;
834 /* initialize level[0] texture image */
835 texImage
= _mesa_get_tex_image(ctx
, texObj
, faceTarget
, 0);
837 _mesa_init_teximage_fields(ctx
, texImage
,
839 (dims
> 1) ? height
: 1,
840 (dims
> 2) ? depth
: 1,
844 ctx
->Driver
.TexImage(ctx
, dims
, texImage
,
845 GL_RGBA
, GL_UNSIGNED_BYTE
, texel
,
846 &ctx
->DefaultPacking
);
849 _mesa_test_texobj_completeness(ctx
, texObj
);
850 assert(texObj
->_BaseComplete
);
851 assert(texObj
->_MipmapComplete
);
853 ctx
->Shared
->FallbackTex
[tex
] = texObj
;
855 return ctx
->Shared
->FallbackTex
[tex
];
860 * Compute the size of the given texture object, in bytes.
863 texture_size(const struct gl_texture_object
*texObj
)
865 const GLuint numFaces
= _mesa_num_tex_faces(texObj
->Target
);
866 GLuint face
, level
, size
= 0;
868 for (face
= 0; face
< numFaces
; face
++) {
869 for (level
= 0; level
< MAX_TEXTURE_LEVELS
; level
++) {
870 const struct gl_texture_image
*img
= texObj
->Image
[face
][level
];
872 GLuint sz
= _mesa_format_image_size(img
->TexFormat
, img
->Width
,
873 img
->Height
, img
->Depth
);
884 * Callback called from _mesa_HashWalk()
887 count_tex_size(GLuint key
, void *data
, void *userData
)
889 const struct gl_texture_object
*texObj
=
890 (const struct gl_texture_object
*) data
;
891 GLuint
*total
= (GLuint
*) userData
;
895 *total
= *total
+ texture_size(texObj
);
900 * Compute total size (in bytes) of all textures for the given context.
901 * For debugging purposes.
904 _mesa_total_texture_memory(struct gl_context
*ctx
)
906 GLuint tgt
, total
= 0;
908 _mesa_HashWalk(ctx
->Shared
->TexObjects
, count_tex_size
, &total
);
910 /* plus, the default texture objects */
911 for (tgt
= 0; tgt
< NUM_TEXTURE_TARGETS
; tgt
++) {
912 total
+= texture_size(ctx
->Shared
->DefaultTex
[tgt
]);
918 static struct gl_texture_object
*
919 invalidate_tex_image_error_check(struct gl_context
*ctx
, GLuint texture
,
920 GLint level
, const char *name
)
922 /* The GL_ARB_invalidate_subdata spec says:
924 * "If <texture> is zero or is not the name of a texture, the error
925 * INVALID_VALUE is generated."
927 * This performs the error check in a different order than listed in the
928 * spec. We have to get the texture object before we can validate the
929 * other parameters against values in the texture object.
931 struct gl_texture_object
*const t
= _mesa_lookup_texture(ctx
, texture
);
932 if (texture
== 0 || t
== NULL
) {
933 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(texture)", name
);
937 /* The GL_ARB_invalidate_subdata spec says:
939 * "If <level> is less than zero or greater than the base 2 logarithm
940 * of the maximum texture width, height, or depth, the error
941 * INVALID_VALUE is generated."
943 if (level
< 0 || level
> t
->MaxLevel
) {
944 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(level)", name
);
948 /* The GL_ARB_invalidate_subdata spec says:
950 * "If the target of <texture> is TEXTURE_RECTANGLE, TEXTURE_BUFFER,
951 * TEXTURE_2D_MULTISAMPLE, or TEXTURE_2D_MULTISAMPLE_ARRAY, and <level>
952 * is not zero, the error INVALID_VALUE is generated."
956 case GL_TEXTURE_RECTANGLE
:
957 case GL_TEXTURE_BUFFER
:
958 case GL_TEXTURE_2D_MULTISAMPLE
:
959 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
960 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(level)", name
);
974 /***********************************************************************/
975 /** \name API functions */
980 * Generate texture names.
982 * \param n number of texture names to be generated.
983 * \param textures an array in which will hold the generated texture names.
985 * \sa glGenTextures().
987 * Calls _mesa_HashFindFreeKeyBlock() to find a block of free texture
988 * IDs which are stored in \p textures. Corresponding empty texture
989 * objects are also generated.
992 _mesa_GenTextures( GLsizei n
, GLuint
*textures
)
994 GET_CURRENT_CONTEXT(ctx
);
998 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
999 _mesa_debug(ctx
, "glGenTextures %d\n", n
);
1002 _mesa_error( ctx
, GL_INVALID_VALUE
, "glGenTextures" );
1010 * This must be atomic (generation and allocation of texture IDs)
1012 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1014 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->TexObjects
, n
);
1016 /* Allocate new, empty texture objects */
1017 for (i
= 0; i
< n
; i
++) {
1018 struct gl_texture_object
*texObj
;
1019 GLuint name
= first
+ i
;
1021 texObj
= ctx
->Driver
.NewTextureObject(ctx
, name
, target
);
1023 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1024 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glGenTextures");
1028 /* insert into hash table */
1029 _mesa_HashInsert(ctx
->Shared
->TexObjects
, texObj
->Name
, texObj
);
1034 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1039 * Check if the given texture object is bound to the current draw or
1040 * read framebuffer. If so, Unbind it.
1043 unbind_texobj_from_fbo(struct gl_context
*ctx
,
1044 struct gl_texture_object
*texObj
)
1046 bool progress
= false;
1048 /* Section 4.4.2 (Attaching Images to Framebuffer Objects), subsection
1049 * "Attaching Texture Images to a Framebuffer," of the OpenGL 3.1 spec
1052 * "If a texture object is deleted while its image is attached to one
1053 * or more attachment points in the currently bound framebuffer, then
1054 * it is as if FramebufferTexture* had been called, with a texture of
1055 * zero, for each attachment point to which this image was attached in
1056 * the currently bound framebuffer. In other words, this texture image
1057 * is first detached from all attachment points in the currently bound
1058 * framebuffer. Note that the texture image is specifically not
1059 * detached from any other framebuffer objects. Detaching the texture
1060 * image from any other framebuffer objects is the responsibility of
1063 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1064 progress
= _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, texObj
);
1066 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1067 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1068 progress
= _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, texObj
)
1073 /* Vertices are already flushed by _mesa_DeleteTextures */
1074 ctx
->NewState
|= _NEW_BUFFERS
;
1079 * Check if the given texture object is bound to any texture image units and
1080 * unbind it if so (revert to default textures).
1083 unbind_texobj_from_texunits(struct gl_context
*ctx
,
1084 struct gl_texture_object
*texObj
)
1088 for (u
= 0; u
< Elements(ctx
->Texture
.Unit
); u
++) {
1089 struct gl_texture_unit
*unit
= &ctx
->Texture
.Unit
[u
];
1090 for (tex
= 0; tex
< NUM_TEXTURE_TARGETS
; tex
++) {
1091 if (texObj
== unit
->CurrentTex
[tex
]) {
1092 _mesa_reference_texobj(&unit
->CurrentTex
[tex
],
1093 ctx
->Shared
->DefaultTex
[tex
]);
1094 ASSERT(unit
->CurrentTex
[tex
]);
1103 * Check if the given texture object is bound to any shader image unit
1104 * and unbind it if that's the case.
1107 unbind_texobj_from_image_units(struct gl_context
*ctx
,
1108 struct gl_texture_object
*texObj
)
1112 for (i
= 0; i
< ctx
->Const
.MaxImageUnits
; i
++) {
1113 struct gl_image_unit
*unit
= &ctx
->ImageUnits
[i
];
1115 if (texObj
== unit
->TexObj
)
1116 _mesa_reference_texobj(&unit
->TexObj
, NULL
);
1122 * Delete named textures.
1124 * \param n number of textures to be deleted.
1125 * \param textures array of texture IDs to be deleted.
1127 * \sa glDeleteTextures().
1129 * If we're about to delete a texture that's currently bound to any
1130 * texture unit, unbind the texture first. Decrement the reference
1131 * count on the texture object and delete it if it's zero.
1132 * Recall that texture objects can be shared among several rendering
1136 _mesa_DeleteTextures( GLsizei n
, const GLuint
*textures
)
1138 GET_CURRENT_CONTEXT(ctx
);
1141 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1142 _mesa_debug(ctx
, "glDeleteTextures %d\n", n
);
1144 FLUSH_VERTICES(ctx
, 0); /* too complex */
1149 for (i
= 0; i
< n
; i
++) {
1150 if (textures
[i
] > 0) {
1151 struct gl_texture_object
*delObj
1152 = _mesa_lookup_texture(ctx
, textures
[i
]);
1155 _mesa_lock_texture(ctx
, delObj
);
1157 /* Check if texture is bound to any framebuffer objects.
1159 * See section 4.4.2.3 of GL_EXT_framebuffer_object.
1161 unbind_texobj_from_fbo(ctx
, delObj
);
1163 /* Check if this texture is currently bound to any texture units.
1166 unbind_texobj_from_texunits(ctx
, delObj
);
1168 /* Check if this texture is currently bound to any shader
1169 * image unit. If so, unbind it.
1170 * See section 3.9.X of GL_ARB_shader_image_load_store.
1172 unbind_texobj_from_image_units(ctx
, delObj
);
1174 _mesa_unlock_texture(ctx
, delObj
);
1176 ctx
->NewState
|= _NEW_TEXTURE
;
1178 /* The texture _name_ is now free for re-use.
1179 * Remove it from the hash table now.
1181 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1182 _mesa_HashRemove(ctx
->Shared
->TexObjects
, delObj
->Name
);
1183 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1185 /* Unreference the texobj. If refcount hits zero, the texture
1188 _mesa_reference_texobj(&delObj
, NULL
);
1196 * Convert a GL texture target enum such as GL_TEXTURE_2D or GL_TEXTURE_3D
1197 * into the corresponding Mesa texture target index.
1198 * Note that proxy targets are not valid here.
1199 * \return TEXTURE_x_INDEX or -1 if target is invalid
1202 _mesa_tex_target_to_index(const struct gl_context
*ctx
, GLenum target
)
1206 return _mesa_is_desktop_gl(ctx
) ? TEXTURE_1D_INDEX
: -1;
1208 return TEXTURE_2D_INDEX
;
1210 return ctx
->API
!= API_OPENGLES
? TEXTURE_3D_INDEX
: -1;
1211 case GL_TEXTURE_CUBE_MAP
:
1212 return ctx
->Extensions
.ARB_texture_cube_map
1213 ? TEXTURE_CUBE_INDEX
: -1;
1214 case GL_TEXTURE_RECTANGLE
:
1215 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.NV_texture_rectangle
1216 ? TEXTURE_RECT_INDEX
: -1;
1217 case GL_TEXTURE_1D_ARRAY
:
1218 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_array
1219 ? TEXTURE_1D_ARRAY_INDEX
: -1;
1220 case GL_TEXTURE_2D_ARRAY
:
1221 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_array
)
1222 || _mesa_is_gles3(ctx
)
1223 ? TEXTURE_2D_ARRAY_INDEX
: -1;
1224 case GL_TEXTURE_BUFFER
:
1225 return ctx
->API
== API_OPENGL_CORE
&&
1226 ctx
->Extensions
.ARB_texture_buffer_object
?
1227 TEXTURE_BUFFER_INDEX
: -1;
1228 case GL_TEXTURE_EXTERNAL_OES
:
1229 return _mesa_is_gles(ctx
) && ctx
->Extensions
.OES_EGL_image_external
1230 ? TEXTURE_EXTERNAL_INDEX
: -1;
1231 case GL_TEXTURE_CUBE_MAP_ARRAY
:
1232 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_cube_map_array
1233 ? TEXTURE_CUBE_ARRAY_INDEX
: -1;
1234 case GL_TEXTURE_2D_MULTISAMPLE
:
1235 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_multisample
1236 ? TEXTURE_2D_MULTISAMPLE_INDEX
: -1;
1237 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
1238 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_multisample
1239 ? TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
: -1;
1247 * Bind a named texture to a texturing target.
1249 * \param target texture target.
1250 * \param texName texture name.
1252 * \sa glBindTexture().
1254 * Determines the old texture object bound and returns immediately if rebinding
1255 * the same texture. Get the current texture which is either a default texture
1256 * if name is null, a named texture from the hash, or a new texture if the
1257 * given texture name is new. Increments its reference count, binds it, and
1258 * calls dd_function_table::BindTexture. Decrements the old texture reference
1259 * count and deletes it if it reaches zero.
1262 _mesa_BindTexture( GLenum target
, GLuint texName
)
1264 GET_CURRENT_CONTEXT(ctx
);
1265 struct gl_texture_unit
*texUnit
= _mesa_get_current_tex_unit(ctx
);
1266 struct gl_texture_object
*newTexObj
= NULL
;
1269 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1270 _mesa_debug(ctx
, "glBindTexture %s %d\n",
1271 _mesa_lookup_enum_by_nr(target
), (GLint
) texName
);
1273 targetIndex
= _mesa_tex_target_to_index(ctx
, target
);
1274 if (targetIndex
< 0) {
1275 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindTexture(target)");
1278 assert(targetIndex
< NUM_TEXTURE_TARGETS
);
1281 * Get pointer to new texture object (newTexObj)
1284 /* Use a default texture object */
1285 newTexObj
= ctx
->Shared
->DefaultTex
[targetIndex
];
1288 /* non-default texture object */
1289 newTexObj
= _mesa_lookup_texture(ctx
, texName
);
1291 /* error checking */
1292 if (newTexObj
->Target
!= 0 && newTexObj
->Target
!= target
) {
1293 /* the named texture object's target doesn't match the given target */
1294 _mesa_error( ctx
, GL_INVALID_OPERATION
,
1295 "glBindTexture(target mismatch)" );
1298 if (newTexObj
->Target
== 0) {
1299 finish_texture_init(ctx
, target
, newTexObj
);
1303 if (ctx
->API
== API_OPENGL_CORE
) {
1304 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindTexture(non-gen name)");
1308 /* if this is a new texture id, allocate a texture object now */
1309 newTexObj
= ctx
->Driver
.NewTextureObject(ctx
, texName
, target
);
1311 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindTexture");
1315 /* and insert it into hash table */
1316 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1317 _mesa_HashInsert(ctx
->Shared
->TexObjects
, texName
, newTexObj
);
1318 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1320 newTexObj
->Target
= target
;
1323 assert(valid_texture_object(newTexObj
));
1325 /* Check if this texture is only used by this context and is already bound.
1326 * If so, just return.
1329 GLboolean early_out
;
1330 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1331 early_out
= ((ctx
->Shared
->RefCount
== 1)
1332 && (newTexObj
== texUnit
->CurrentTex
[targetIndex
]));
1333 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1339 /* flush before changing binding */
1340 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
1342 /* Do the actual binding. The refcount on the previously bound
1343 * texture object will be decremented. It'll be deleted if the
1346 _mesa_reference_texobj(&texUnit
->CurrentTex
[targetIndex
], newTexObj
);
1347 ASSERT(texUnit
->CurrentTex
[targetIndex
]);
1349 /* Pass BindTexture call to device driver */
1350 if (ctx
->Driver
.BindTexture
)
1351 ctx
->Driver
.BindTexture(ctx
, target
, newTexObj
);
1356 * Set texture priorities.
1358 * \param n number of textures.
1359 * \param texName texture names.
1360 * \param priorities corresponding texture priorities.
1362 * \sa glPrioritizeTextures().
1364 * Looks up each texture in the hash, clamps the corresponding priority between
1365 * 0.0 and 1.0, and calls dd_function_table::PrioritizeTexture.
1368 _mesa_PrioritizeTextures( GLsizei n
, const GLuint
*texName
,
1369 const GLclampf
*priorities
)
1371 GET_CURRENT_CONTEXT(ctx
);
1374 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1375 _mesa_debug(ctx
, "glPrioritizeTextures %d\n", n
);
1377 FLUSH_VERTICES(ctx
, 0);
1380 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPrioritizeTextures" );
1387 for (i
= 0; i
< n
; i
++) {
1388 if (texName
[i
] > 0) {
1389 struct gl_texture_object
*t
= _mesa_lookup_texture(ctx
, texName
[i
]);
1391 t
->Priority
= CLAMP( priorities
[i
], 0.0F
, 1.0F
);
1396 ctx
->NewState
|= _NEW_TEXTURE
;
1402 * See if textures are loaded in texture memory.
1404 * \param n number of textures to query.
1405 * \param texName array with the texture names.
1406 * \param residences array which will hold the residence status.
1408 * \return GL_TRUE if all textures are resident and \p residences is left unchanged,
1410 * Note: we assume all textures are always resident
1412 GLboolean GLAPIENTRY
1413 _mesa_AreTexturesResident(GLsizei n
, const GLuint
*texName
,
1414 GLboolean
*residences
)
1416 GET_CURRENT_CONTEXT(ctx
);
1417 GLboolean allResident
= GL_TRUE
;
1419 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1421 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1422 _mesa_debug(ctx
, "glAreTexturesResident %d\n", n
);
1425 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident(n)");
1429 if (!texName
|| !residences
)
1432 /* We only do error checking on the texture names */
1433 for (i
= 0; i
< n
; i
++) {
1434 struct gl_texture_object
*t
;
1435 if (texName
[i
] == 0) {
1436 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident");
1439 t
= _mesa_lookup_texture(ctx
, texName
[i
]);
1441 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident");
1451 * See if a name corresponds to a texture.
1453 * \param texture texture name.
1455 * \return GL_TRUE if texture name corresponds to a texture, or GL_FALSE
1458 * \sa glIsTexture().
1460 * Calls _mesa_HashLookup().
1462 GLboolean GLAPIENTRY
1463 _mesa_IsTexture( GLuint texture
)
1465 struct gl_texture_object
*t
;
1466 GET_CURRENT_CONTEXT(ctx
);
1467 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1469 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1470 _mesa_debug(ctx
, "glIsTexture %d\n", texture
);
1475 t
= _mesa_lookup_texture(ctx
, texture
);
1477 /* IsTexture is true only after object has been bound once. */
1478 return t
&& t
->Target
;
1483 * Simplest implementation of texture locking: grab the shared tex
1484 * mutex. Examine the shared context state timestamp and if there has
1485 * been a change, set the appropriate bits in ctx->NewState.
1487 * This is used to deal with synchronizing things when a texture object
1488 * is used/modified by different contexts (or threads) which are sharing
1491 * See also _mesa_lock/unlock_texture() in teximage.h
1494 _mesa_lock_context_textures( struct gl_context
*ctx
)
1496 _glthread_LOCK_MUTEX(ctx
->Shared
->TexMutex
);
1498 if (ctx
->Shared
->TextureStateStamp
!= ctx
->TextureStateTimestamp
) {
1499 ctx
->NewState
|= _NEW_TEXTURE
;
1500 ctx
->TextureStateTimestamp
= ctx
->Shared
->TextureStateStamp
;
1506 _mesa_unlock_context_textures( struct gl_context
*ctx
)
1508 assert(ctx
->Shared
->TextureStateStamp
== ctx
->TextureStateTimestamp
);
1509 _glthread_UNLOCK_MUTEX(ctx
->Shared
->TexMutex
);
1513 _mesa_InvalidateTexSubImage(GLuint texture
, GLint level
, GLint xoffset
,
1514 GLint yoffset
, GLint zoffset
, GLsizei width
,
1515 GLsizei height
, GLsizei depth
)
1517 struct gl_texture_object
*t
;
1518 struct gl_texture_image
*image
;
1519 GET_CURRENT_CONTEXT(ctx
);
1521 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1522 _mesa_debug(ctx
, "glInvalidateTexSubImage %d\n", texture
);
1524 t
= invalidate_tex_image_error_check(ctx
, texture
, level
,
1525 "glInvalidateTexSubImage");
1527 /* The GL_ARB_invalidate_subdata spec says:
1529 * "...the specified subregion must be between -<b> and <dim>+<b> where
1530 * <dim> is the size of the dimension of the texture image, and <b> is
1531 * the size of the border of that texture image, otherwise
1532 * INVALID_VALUE is generated (border is not applied to dimensions that
1533 * don't exist in a given texture target)."
1535 image
= t
->Image
[0][level
];
1544 /* The GL_ARB_invalidate_subdata spec says:
1546 * "For texture targets that don't have certain dimensions, this
1547 * command treats those dimensions as having a size of 1. For
1548 * example, to invalidate a portion of a two-dimensional texture,
1549 * the application would use <zoffset> equal to zero and <depth>
1552 switch (t
->Target
) {
1553 case GL_TEXTURE_BUFFER
:
1562 xBorder
= image
->Border
;
1565 imageWidth
= image
->Width
;
1569 case GL_TEXTURE_1D_ARRAY
:
1570 xBorder
= image
->Border
;
1573 imageWidth
= image
->Width
;
1574 imageHeight
= image
->Height
;
1578 case GL_TEXTURE_CUBE_MAP
:
1579 case GL_TEXTURE_RECTANGLE
:
1580 case GL_TEXTURE_2D_MULTISAMPLE
:
1581 xBorder
= image
->Border
;
1582 yBorder
= image
->Border
;
1584 imageWidth
= image
->Width
;
1585 imageHeight
= image
->Height
;
1588 case GL_TEXTURE_2D_ARRAY
:
1589 case GL_TEXTURE_CUBE_MAP_ARRAY
:
1590 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
1591 xBorder
= image
->Border
;
1592 yBorder
= image
->Border
;
1594 imageWidth
= image
->Width
;
1595 imageHeight
= image
->Height
;
1596 imageDepth
= image
->Depth
;
1599 xBorder
= image
->Border
;
1600 yBorder
= image
->Border
;
1601 zBorder
= image
->Border
;
1602 imageWidth
= image
->Width
;
1603 imageHeight
= image
->Height
;
1604 imageDepth
= image
->Depth
;
1607 assert(!"Should not get here.");
1617 if (xoffset
< -xBorder
) {
1618 _mesa_error(ctx
, GL_INVALID_VALUE
, "glInvalidateSubTexImage(xoffset)");
1622 if (xoffset
+ width
> imageWidth
+ xBorder
) {
1623 _mesa_error(ctx
, GL_INVALID_VALUE
,
1624 "glInvalidateSubTexImage(xoffset+width)");
1628 if (yoffset
< -yBorder
) {
1629 _mesa_error(ctx
, GL_INVALID_VALUE
, "glInvalidateSubTexImage(yoffset)");
1633 if (yoffset
+ height
> imageHeight
+ yBorder
) {
1634 _mesa_error(ctx
, GL_INVALID_VALUE
,
1635 "glInvalidateSubTexImage(yoffset+height)");
1639 if (zoffset
< -zBorder
) {
1640 _mesa_error(ctx
, GL_INVALID_VALUE
,
1641 "glInvalidateSubTexImage(zoffset)");
1645 if (zoffset
+ depth
> imageDepth
+ zBorder
) {
1646 _mesa_error(ctx
, GL_INVALID_VALUE
,
1647 "glInvalidateSubTexImage(zoffset+depth)");
1652 /* We don't actually do anything for this yet. Just return after
1653 * validating the parameters and generating the required errors.
1659 _mesa_InvalidateTexImage(GLuint texture
, GLint level
)
1661 GET_CURRENT_CONTEXT(ctx
);
1663 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1664 _mesa_debug(ctx
, "glInvalidateTexImage(%d, %d)\n", texture
, level
);
1666 invalidate_tex_image_error_check(ctx
, texture
, level
,
1667 "glInvalidateTexImage");
1669 /* We don't actually do anything for this yet. Just return after
1670 * validating the parameters and generating the required errors.