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 mtx_init(&obj
->Mutex
, mtx_plain
);
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
->StencilSampling
= false;
152 obj
->Sampler
.CubeMapSeamless
= GL_FALSE
;
153 obj
->Swizzle
[0] = GL_RED
;
154 obj
->Swizzle
[1] = GL_GREEN
;
155 obj
->Swizzle
[2] = GL_BLUE
;
156 obj
->Swizzle
[3] = GL_ALPHA
;
157 obj
->_Swizzle
= SWIZZLE_NOOP
;
158 obj
->Sampler
.sRGBDecode
= GL_DECODE_EXT
;
159 obj
->BufferObjectFormat
= GL_R8
;
160 obj
->_BufferObjectFormat
= MESA_FORMAT_R_UNORM8
;
161 obj
->ImageFormatCompatibilityType
= GL_IMAGE_FORMAT_COMPATIBILITY_BY_SIZE
;
166 * Some texture initialization can't be finished until we know which
167 * target it's getting bound to (GL_TEXTURE_1D/2D/etc).
170 finish_texture_init(struct gl_context
*ctx
, GLenum target
,
171 struct gl_texture_object
*obj
)
173 GLenum filter
= GL_LINEAR
;
174 assert(obj
->Target
== 0);
177 case GL_TEXTURE_2D_MULTISAMPLE
:
178 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
182 case GL_TEXTURE_RECTANGLE_NV
:
183 case GL_TEXTURE_EXTERNAL_OES
:
184 /* have to init wrap and filter state here - kind of klunky */
185 obj
->Sampler
.WrapS
= GL_CLAMP_TO_EDGE
;
186 obj
->Sampler
.WrapT
= GL_CLAMP_TO_EDGE
;
187 obj
->Sampler
.WrapR
= GL_CLAMP_TO_EDGE
;
188 obj
->Sampler
.MinFilter
= filter
;
189 obj
->Sampler
.MagFilter
= filter
;
190 if (ctx
->Driver
.TexParameter
) {
191 static const GLfloat fparam_wrap
[1] = {(GLfloat
) GL_CLAMP_TO_EDGE
};
192 const GLfloat fparam_filter
[1] = {(GLfloat
) filter
};
193 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_S
, fparam_wrap
);
194 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_T
, fparam_wrap
);
195 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_R
, fparam_wrap
);
196 ctx
->Driver
.TexParameter(ctx
, obj
,
197 GL_TEXTURE_MIN_FILTER
, fparam_filter
);
198 ctx
->Driver
.TexParameter(ctx
, obj
,
199 GL_TEXTURE_MAG_FILTER
, fparam_filter
);
204 /* nothing needs done */
211 * Deallocate a texture object struct. It should have already been
212 * removed from the texture object pool.
213 * Called via ctx->Driver.DeleteTexture() if not overriden by a driver.
215 * \param shared the shared GL state to which the object belongs.
216 * \param texObj the texture object to delete.
219 _mesa_delete_texture_object(struct gl_context
*ctx
,
220 struct gl_texture_object
*texObj
)
224 /* Set Target to an invalid value. With some assertions elsewhere
225 * we can try to detect possible use of deleted textures.
227 texObj
->Target
= 0x99;
229 /* free the texture images */
230 for (face
= 0; face
< 6; face
++) {
231 for (i
= 0; i
< MAX_TEXTURE_LEVELS
; i
++) {
232 if (texObj
->Image
[face
][i
]) {
233 ctx
->Driver
.DeleteTextureImage(ctx
, texObj
->Image
[face
][i
]);
238 _mesa_reference_buffer_object(ctx
, &texObj
->BufferObject
, NULL
);
240 /* destroy the mutex -- it may have allocated memory (eg on bsd) */
241 mtx_destroy(&texObj
->Mutex
);
245 /* free this object */
252 * Copy texture object state from one texture object to another.
253 * Use for glPush/PopAttrib.
255 * \param dest destination texture object.
256 * \param src source texture object.
259 _mesa_copy_texture_object( struct gl_texture_object
*dest
,
260 const struct gl_texture_object
*src
)
262 dest
->Target
= src
->Target
;
263 dest
->TargetIndex
= src
->TargetIndex
;
264 dest
->Name
= src
->Name
;
265 dest
->Priority
= src
->Priority
;
266 dest
->Sampler
.BorderColor
.f
[0] = src
->Sampler
.BorderColor
.f
[0];
267 dest
->Sampler
.BorderColor
.f
[1] = src
->Sampler
.BorderColor
.f
[1];
268 dest
->Sampler
.BorderColor
.f
[2] = src
->Sampler
.BorderColor
.f
[2];
269 dest
->Sampler
.BorderColor
.f
[3] = src
->Sampler
.BorderColor
.f
[3];
270 dest
->Sampler
.WrapS
= src
->Sampler
.WrapS
;
271 dest
->Sampler
.WrapT
= src
->Sampler
.WrapT
;
272 dest
->Sampler
.WrapR
= src
->Sampler
.WrapR
;
273 dest
->Sampler
.MinFilter
= src
->Sampler
.MinFilter
;
274 dest
->Sampler
.MagFilter
= src
->Sampler
.MagFilter
;
275 dest
->Sampler
.MinLod
= src
->Sampler
.MinLod
;
276 dest
->Sampler
.MaxLod
= src
->Sampler
.MaxLod
;
277 dest
->Sampler
.LodBias
= src
->Sampler
.LodBias
;
278 dest
->BaseLevel
= src
->BaseLevel
;
279 dest
->MaxLevel
= src
->MaxLevel
;
280 dest
->Sampler
.MaxAnisotropy
= src
->Sampler
.MaxAnisotropy
;
281 dest
->Sampler
.CompareMode
= src
->Sampler
.CompareMode
;
282 dest
->Sampler
.CompareFunc
= src
->Sampler
.CompareFunc
;
283 dest
->Sampler
.CubeMapSeamless
= src
->Sampler
.CubeMapSeamless
;
284 dest
->DepthMode
= src
->DepthMode
;
285 dest
->StencilSampling
= src
->StencilSampling
;
286 dest
->Sampler
.sRGBDecode
= src
->Sampler
.sRGBDecode
;
287 dest
->_MaxLevel
= src
->_MaxLevel
;
288 dest
->_MaxLambda
= src
->_MaxLambda
;
289 dest
->GenerateMipmap
= src
->GenerateMipmap
;
290 dest
->_BaseComplete
= src
->_BaseComplete
;
291 dest
->_MipmapComplete
= src
->_MipmapComplete
;
292 COPY_4V(dest
->Swizzle
, src
->Swizzle
);
293 dest
->_Swizzle
= src
->_Swizzle
;
295 dest
->RequiredTextureImageUnits
= src
->RequiredTextureImageUnits
;
300 * Free all texture images of the given texture object.
302 * \param ctx GL context.
303 * \param t texture object.
305 * \sa _mesa_clear_texture_image().
308 _mesa_clear_texture_object(struct gl_context
*ctx
,
309 struct gl_texture_object
*texObj
)
313 if (texObj
->Target
== 0)
316 for (i
= 0; i
< MAX_FACES
; i
++) {
317 for (j
= 0; j
< MAX_TEXTURE_LEVELS
; j
++) {
318 struct gl_texture_image
*texImage
= texObj
->Image
[i
][j
];
320 _mesa_clear_texture_image(ctx
, texImage
);
327 * Check if the given texture object is valid by examining its Target field.
328 * For debugging only.
331 valid_texture_object(const struct gl_texture_object
*tex
)
333 switch (tex
->Target
) {
338 case GL_TEXTURE_CUBE_MAP_ARB
:
339 case GL_TEXTURE_RECTANGLE_NV
:
340 case GL_TEXTURE_1D_ARRAY_EXT
:
341 case GL_TEXTURE_2D_ARRAY_EXT
:
342 case GL_TEXTURE_BUFFER
:
343 case GL_TEXTURE_EXTERNAL_OES
:
344 case GL_TEXTURE_CUBE_MAP_ARRAY
:
345 case GL_TEXTURE_2D_MULTISAMPLE
:
346 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
349 _mesa_problem(NULL
, "invalid reference to a deleted texture object");
352 _mesa_problem(NULL
, "invalid texture object Target 0x%x, Id = %u",
353 tex
->Target
, tex
->Name
);
360 * Reference (or unreference) a texture object.
361 * If '*ptr', decrement *ptr's refcount (and delete if it becomes zero).
362 * If 'tex' is non-null, increment its refcount.
363 * This is normally only called from the _mesa_reference_texobj() macro
364 * when there's a real pointer change.
367 _mesa_reference_texobj_(struct gl_texture_object
**ptr
,
368 struct gl_texture_object
*tex
)
373 /* Unreference the old texture */
374 GLboolean deleteFlag
= GL_FALSE
;
375 struct gl_texture_object
*oldTex
= *ptr
;
377 ASSERT(valid_texture_object(oldTex
));
378 (void) valid_texture_object
; /* silence warning in release builds */
380 mtx_lock(&oldTex
->Mutex
);
381 ASSERT(oldTex
->RefCount
> 0);
384 deleteFlag
= (oldTex
->RefCount
== 0);
385 mtx_unlock(&oldTex
->Mutex
);
388 GET_CURRENT_CONTEXT(ctx
);
390 ctx
->Driver
.DeleteTexture(ctx
, oldTex
);
392 _mesa_problem(NULL
, "Unable to delete texture, no context");
400 /* reference new texture */
401 ASSERT(valid_texture_object(tex
));
402 mtx_lock(&tex
->Mutex
);
403 if (tex
->RefCount
== 0) {
404 /* this texture's being deleted (look just above) */
405 /* Not sure this can every really happen. Warn if it does. */
406 _mesa_problem(NULL
, "referencing deleted texture object");
413 mtx_unlock(&tex
->Mutex
);
418 enum base_mipmap
{ BASE
, MIPMAP
};
422 * Mark a texture object as incomplete. There are actually three kinds of
424 * 1. "base incomplete": the base level of the texture is invalid so no
425 * texturing is possible.
426 * 2. "mipmap incomplete": a non-base level of the texture is invalid so
427 * mipmap filtering isn't possible, but non-mipmap filtering is.
428 * 3. "texture incompleteness": some combination of texture state and
429 * sampler state renders the texture incomplete.
431 * \param t texture object
432 * \param bm either BASE or MIPMAP to indicate what's incomplete
433 * \param fmt... string describing why it's incomplete (for debugging).
436 incomplete(struct gl_texture_object
*t
, enum base_mipmap bm
,
437 const char *fmt
, ...)
439 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_TEXTURE
) {
444 vsnprintf(s
, sizeof(s
), fmt
, args
);
447 _mesa_debug(NULL
, "Texture Obj %d incomplete because: %s\n", t
->Name
, s
);
451 t
->_BaseComplete
= GL_FALSE
;
452 t
->_MipmapComplete
= GL_FALSE
;
457 * Examine a texture object to determine if it is complete.
459 * The gl_texture_object::Complete flag will be set to GL_TRUE or GL_FALSE
462 * \param ctx GL context.
463 * \param t texture object.
465 * According to the texture target, verifies that each of the mipmaps is
466 * present and has the expected size.
469 _mesa_test_texobj_completeness( const struct gl_context
*ctx
,
470 struct gl_texture_object
*t
)
472 const GLint baseLevel
= t
->BaseLevel
;
473 const struct gl_texture_image
*baseImage
;
476 /* We'll set these to FALSE if tests fail below */
477 t
->_BaseComplete
= GL_TRUE
;
478 t
->_MipmapComplete
= GL_TRUE
;
480 if (t
->Target
== GL_TEXTURE_BUFFER
) {
481 /* Buffer textures are always considered complete. The obvious case where
482 * they would be incomplete (no BO attached) is actually specced to be
483 * undefined rendering results.
488 /* Detect cases where the application set the base level to an invalid
491 if ((baseLevel
< 0) || (baseLevel
>= MAX_TEXTURE_LEVELS
)) {
492 incomplete(t
, BASE
, "base level = %d is invalid", baseLevel
);
496 if (t
->MaxLevel
< baseLevel
) {
497 incomplete(t
, MIPMAP
, "MAX_LEVEL (%d) < BASE_LEVEL (%d)",
498 t
->MaxLevel
, baseLevel
);
502 baseImage
= t
->Image
[0][baseLevel
];
504 /* Always need the base level image */
506 incomplete(t
, BASE
, "Image[baseLevel=%d] == NULL", baseLevel
);
510 /* Check width/height/depth for zero */
511 if (baseImage
->Width
== 0 ||
512 baseImage
->Height
== 0 ||
513 baseImage
->Depth
== 0) {
514 incomplete(t
, BASE
, "texture width or height or depth = 0");
518 /* Check if the texture values are integer */
520 GLenum datatype
= _mesa_get_format_datatype(baseImage
->TexFormat
);
521 t
->_IsIntegerFormat
= datatype
== GL_INT
|| datatype
== GL_UNSIGNED_INT
;
524 /* Compute _MaxLevel (the maximum mipmap level we'll sample from given the
525 * mipmap image sizes and GL_TEXTURE_MAX_LEVEL state).
529 case GL_TEXTURE_1D_ARRAY_EXT
:
530 maxLevels
= ctx
->Const
.MaxTextureLevels
;
533 case GL_TEXTURE_2D_ARRAY_EXT
:
534 maxLevels
= ctx
->Const
.MaxTextureLevels
;
537 maxLevels
= ctx
->Const
.Max3DTextureLevels
;
539 case GL_TEXTURE_CUBE_MAP_ARB
:
540 case GL_TEXTURE_CUBE_MAP_ARRAY
:
541 maxLevels
= ctx
->Const
.MaxCubeTextureLevels
;
543 case GL_TEXTURE_RECTANGLE_NV
:
544 case GL_TEXTURE_BUFFER
:
545 case GL_TEXTURE_EXTERNAL_OES
:
546 case GL_TEXTURE_2D_MULTISAMPLE
:
547 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
548 maxLevels
= 1; /* no mipmapping */
551 _mesa_problem(ctx
, "Bad t->Target in _mesa_test_texobj_completeness");
555 ASSERT(maxLevels
> 0);
557 t
->_MaxLevel
= MIN3(t
->MaxLevel
,
558 /* 'p' in the GL spec */
559 (int) (baseLevel
+ baseImage
->MaxNumLevels
- 1),
560 /* 'q' in the GL spec */
564 /* Adjust max level for views: the data store may have more levels than
567 t
->_MaxLevel
= MIN2(t
->_MaxLevel
, t
->NumLevels
- 1);
570 /* Compute _MaxLambda = q - p in the spec used during mipmapping */
571 t
->_MaxLambda
= (GLfloat
) (t
->_MaxLevel
- baseLevel
);
574 /* This texture object was created with glTexStorage1/2/3D() so we
575 * know that all the mipmap levels are the right size and all cube
576 * map faces are the same size.
577 * We don't need to do any of the additional checks below.
582 if (t
->Target
== GL_TEXTURE_CUBE_MAP_ARB
) {
583 /* Make sure that all six cube map level 0 images are the same size.
584 * Note: we know that the image's width==height (we enforce that
585 * at glTexImage time) so we only need to test the width here.
588 assert(baseImage
->Width2
== baseImage
->Height
);
589 for (face
= 1; face
< 6; face
++) {
590 assert(t
->Image
[face
][baseLevel
] == NULL
||
591 t
->Image
[face
][baseLevel
]->Width2
==
592 t
->Image
[face
][baseLevel
]->Height2
);
593 if (t
->Image
[face
][baseLevel
] == NULL
||
594 t
->Image
[face
][baseLevel
]->Width2
!= baseImage
->Width2
) {
595 incomplete(t
, BASE
, "Cube face missing or mismatched size");
602 * Do mipmap consistency checking.
603 * Note: we don't care about the current texture sampler state here.
604 * To determine texture completeness we'll either look at _BaseComplete
605 * or _MipmapComplete depending on the current minification filter mode.
609 const GLint minLevel
= baseLevel
;
610 const GLint maxLevel
= t
->_MaxLevel
;
611 const GLuint numFaces
= _mesa_num_tex_faces(t
->Target
);
612 GLuint width
, height
, depth
, face
;
614 if (minLevel
> maxLevel
) {
615 incomplete(t
, MIPMAP
, "minLevel > maxLevel");
619 /* Get the base image's dimensions */
620 width
= baseImage
->Width2
;
621 height
= baseImage
->Height2
;
622 depth
= baseImage
->Depth2
;
624 /* Note: this loop will be a no-op for RECT, BUFFER, EXTERNAL,
625 * MULTISAMPLE and MULTISAMPLE_ARRAY textures
627 for (i
= baseLevel
+ 1; i
< maxLevels
; i
++) {
628 /* Compute the expected size of image at level[i] */
632 if (height
> 1 && t
->Target
!= GL_TEXTURE_1D_ARRAY
) {
635 if (depth
> 1 && t
->Target
!= GL_TEXTURE_2D_ARRAY
&& t
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) {
639 /* loop over cube faces (or single face otherwise) */
640 for (face
= 0; face
< numFaces
; face
++) {
641 if (i
>= minLevel
&& i
<= maxLevel
) {
642 const struct gl_texture_image
*img
= t
->Image
[face
][i
];
645 incomplete(t
, MIPMAP
, "TexImage[%d] is missing", i
);
648 if (img
->TexFormat
!= baseImage
->TexFormat
) {
649 incomplete(t
, MIPMAP
, "Format[i] != Format[baseLevel]");
652 if (img
->Border
!= baseImage
->Border
) {
653 incomplete(t
, MIPMAP
, "Border[i] != Border[baseLevel]");
656 if (img
->Width2
!= width
) {
657 incomplete(t
, MIPMAP
, "TexImage[%d] bad width %u", i
, img
->Width2
);
660 if (img
->Height2
!= height
) {
661 incomplete(t
, MIPMAP
, "TexImage[%d] bad height %u", i
, img
->Height2
);
664 if (img
->Depth2
!= depth
) {
665 incomplete(t
, MIPMAP
, "TexImage[%d] bad depth %u", i
, img
->Depth2
);
669 /* Extra checks for cube textures */
671 /* check that cube faces are the same size */
672 if (img
->Width2
!= t
->Image
[0][i
]->Width2
||
673 img
->Height2
!= t
->Image
[0][i
]->Height2
) {
674 incomplete(t
, MIPMAP
, "CubeMap Image[n][i] bad size");
681 if (width
== 1 && height
== 1 && depth
== 1) {
682 return; /* found smallest needed mipmap, all done! */
690 * Check if the given cube map texture is "cube complete" as defined in
691 * the OpenGL specification.
694 _mesa_cube_complete(const struct gl_texture_object
*texObj
)
696 const GLint baseLevel
= texObj
->BaseLevel
;
697 const struct gl_texture_image
*img0
, *img
;
700 if (texObj
->Target
!= GL_TEXTURE_CUBE_MAP
)
703 if ((baseLevel
< 0) || (baseLevel
>= MAX_TEXTURE_LEVELS
))
706 /* check first face */
707 img0
= texObj
->Image
[0][baseLevel
];
710 img0
->Width
!= img0
->Height
)
713 /* check remaining faces vs. first face */
714 for (face
= 1; face
< 6; face
++) {
715 img
= texObj
->Image
[face
][baseLevel
];
717 img
->Width
!= img0
->Width
||
718 img
->Height
!= img0
->Height
||
719 img
->TexFormat
!= img0
->TexFormat
)
728 * Mark a texture object dirty. It forces the object to be incomplete
729 * and forces the context to re-validate its state.
731 * \param ctx GL context.
732 * \param texObj texture object.
735 _mesa_dirty_texobj(struct gl_context
*ctx
, struct gl_texture_object
*texObj
)
737 texObj
->_BaseComplete
= GL_FALSE
;
738 texObj
->_MipmapComplete
= GL_FALSE
;
739 ctx
->NewState
|= _NEW_TEXTURE
;
744 * Return pointer to a default/fallback texture of the given type/target.
745 * The texture is an RGBA texture with all texels = (0,0,0,1).
746 * That's the value a GLSL sampler should get when sampling from an
747 * incomplete texture.
749 struct gl_texture_object
*
750 _mesa_get_fallback_texture(struct gl_context
*ctx
, gl_texture_index tex
)
752 if (!ctx
->Shared
->FallbackTex
[tex
]) {
753 /* create fallback texture now */
754 const GLsizei width
= 1, height
= 1, depth
= 1;
756 struct gl_texture_object
*texObj
;
757 struct gl_texture_image
*texImage
;
758 mesa_format texFormat
;
759 GLuint dims
, face
, numFaces
= 1;
768 case TEXTURE_2D_ARRAY_INDEX
:
770 target
= GL_TEXTURE_2D_ARRAY
;
772 case TEXTURE_1D_ARRAY_INDEX
:
774 target
= GL_TEXTURE_1D_ARRAY
;
776 case TEXTURE_CUBE_INDEX
:
778 target
= GL_TEXTURE_CUBE_MAP
;
781 case TEXTURE_3D_INDEX
:
783 target
= GL_TEXTURE_3D
;
785 case TEXTURE_RECT_INDEX
:
787 target
= GL_TEXTURE_RECTANGLE
;
789 case TEXTURE_2D_INDEX
:
791 target
= GL_TEXTURE_2D
;
793 case TEXTURE_1D_INDEX
:
795 target
= GL_TEXTURE_1D
;
797 case TEXTURE_BUFFER_INDEX
:
799 target
= GL_TEXTURE_BUFFER
;
801 case TEXTURE_CUBE_ARRAY_INDEX
:
803 target
= GL_TEXTURE_CUBE_MAP_ARRAY
;
805 case TEXTURE_EXTERNAL_INDEX
:
807 target
= GL_TEXTURE_EXTERNAL_OES
;
809 case TEXTURE_2D_MULTISAMPLE_INDEX
:
811 target
= GL_TEXTURE_2D_MULTISAMPLE
;
813 case TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
:
815 target
= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
;
822 /* create texture object */
823 texObj
= ctx
->Driver
.NewTextureObject(ctx
, 0, target
);
827 assert(texObj
->RefCount
== 1);
828 texObj
->Sampler
.MinFilter
= GL_NEAREST
;
829 texObj
->Sampler
.MagFilter
= GL_NEAREST
;
831 texFormat
= ctx
->Driver
.ChooseTextureFormat(ctx
, target
,
835 /* need a loop here just for cube maps */
836 for (face
= 0; face
< numFaces
; face
++) {
839 if (target
== GL_TEXTURE_CUBE_MAP
)
840 faceTarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ face
;
844 /* initialize level[0] texture image */
845 texImage
= _mesa_get_tex_image(ctx
, texObj
, faceTarget
, 0);
847 _mesa_init_teximage_fields(ctx
, texImage
,
849 (dims
> 1) ? height
: 1,
850 (dims
> 2) ? depth
: 1,
854 ctx
->Driver
.TexImage(ctx
, dims
, texImage
,
855 GL_RGBA
, GL_UNSIGNED_BYTE
, texel
,
856 &ctx
->DefaultPacking
);
859 _mesa_test_texobj_completeness(ctx
, texObj
);
860 assert(texObj
->_BaseComplete
);
861 assert(texObj
->_MipmapComplete
);
863 ctx
->Shared
->FallbackTex
[tex
] = texObj
;
865 return ctx
->Shared
->FallbackTex
[tex
];
870 * Compute the size of the given texture object, in bytes.
873 texture_size(const struct gl_texture_object
*texObj
)
875 const GLuint numFaces
= _mesa_num_tex_faces(texObj
->Target
);
876 GLuint face
, level
, size
= 0;
878 for (face
= 0; face
< numFaces
; face
++) {
879 for (level
= 0; level
< MAX_TEXTURE_LEVELS
; level
++) {
880 const struct gl_texture_image
*img
= texObj
->Image
[face
][level
];
882 GLuint sz
= _mesa_format_image_size(img
->TexFormat
, img
->Width
,
883 img
->Height
, img
->Depth
);
894 * Callback called from _mesa_HashWalk()
897 count_tex_size(GLuint key
, void *data
, void *userData
)
899 const struct gl_texture_object
*texObj
=
900 (const struct gl_texture_object
*) data
;
901 GLuint
*total
= (GLuint
*) userData
;
905 *total
= *total
+ texture_size(texObj
);
910 * Compute total size (in bytes) of all textures for the given context.
911 * For debugging purposes.
914 _mesa_total_texture_memory(struct gl_context
*ctx
)
916 GLuint tgt
, total
= 0;
918 _mesa_HashWalk(ctx
->Shared
->TexObjects
, count_tex_size
, &total
);
920 /* plus, the default texture objects */
921 for (tgt
= 0; tgt
< NUM_TEXTURE_TARGETS
; tgt
++) {
922 total
+= texture_size(ctx
->Shared
->DefaultTex
[tgt
]);
928 static struct gl_texture_object
*
929 invalidate_tex_image_error_check(struct gl_context
*ctx
, GLuint texture
,
930 GLint level
, const char *name
)
932 /* The GL_ARB_invalidate_subdata spec says:
934 * "If <texture> is zero or is not the name of a texture, the error
935 * INVALID_VALUE is generated."
937 * This performs the error check in a different order than listed in the
938 * spec. We have to get the texture object before we can validate the
939 * other parameters against values in the texture object.
941 struct gl_texture_object
*const t
= _mesa_lookup_texture(ctx
, texture
);
942 if (texture
== 0 || t
== NULL
) {
943 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(texture)", name
);
947 /* The GL_ARB_invalidate_subdata spec says:
949 * "If <level> is less than zero or greater than the base 2 logarithm
950 * of the maximum texture width, height, or depth, the error
951 * INVALID_VALUE is generated."
953 if (level
< 0 || level
> t
->MaxLevel
) {
954 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(level)", name
);
958 /* The GL_ARB_invalidate_subdata spec says:
960 * "If the target of <texture> is TEXTURE_RECTANGLE, TEXTURE_BUFFER,
961 * TEXTURE_2D_MULTISAMPLE, or TEXTURE_2D_MULTISAMPLE_ARRAY, and <level>
962 * is not zero, the error INVALID_VALUE is generated."
966 case GL_TEXTURE_RECTANGLE
:
967 case GL_TEXTURE_BUFFER
:
968 case GL_TEXTURE_2D_MULTISAMPLE
:
969 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
970 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(level)", name
);
984 /***********************************************************************/
985 /** \name API functions */
990 * Generate texture names.
992 * \param n number of texture names to be generated.
993 * \param textures an array in which will hold the generated texture names.
995 * \sa glGenTextures().
997 * Calls _mesa_HashFindFreeKeyBlock() to find a block of free texture
998 * IDs which are stored in \p textures. Corresponding empty texture
999 * objects are also generated.
1002 _mesa_GenTextures( GLsizei n
, GLuint
*textures
)
1004 GET_CURRENT_CONTEXT(ctx
);
1008 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1009 _mesa_debug(ctx
, "glGenTextures %d\n", n
);
1012 _mesa_error( ctx
, GL_INVALID_VALUE
, "glGenTextures" );
1020 * This must be atomic (generation and allocation of texture IDs)
1022 mtx_lock(&ctx
->Shared
->Mutex
);
1024 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->TexObjects
, n
);
1026 /* Allocate new, empty texture objects */
1027 for (i
= 0; i
< n
; i
++) {
1028 struct gl_texture_object
*texObj
;
1029 GLuint name
= first
+ i
;
1031 texObj
= ctx
->Driver
.NewTextureObject(ctx
, name
, target
);
1033 mtx_unlock(&ctx
->Shared
->Mutex
);
1034 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glGenTextures");
1038 /* insert into hash table */
1039 _mesa_HashInsert(ctx
->Shared
->TexObjects
, texObj
->Name
, texObj
);
1044 mtx_unlock(&ctx
->Shared
->Mutex
);
1049 * Check if the given texture object is bound to the current draw or
1050 * read framebuffer. If so, Unbind it.
1053 unbind_texobj_from_fbo(struct gl_context
*ctx
,
1054 struct gl_texture_object
*texObj
)
1056 bool progress
= false;
1058 /* Section 4.4.2 (Attaching Images to Framebuffer Objects), subsection
1059 * "Attaching Texture Images to a Framebuffer," of the OpenGL 3.1 spec
1062 * "If a texture object is deleted while its image is attached to one
1063 * or more attachment points in the currently bound framebuffer, then
1064 * it is as if FramebufferTexture* had been called, with a texture of
1065 * zero, for each attachment point to which this image was attached in
1066 * the currently bound framebuffer. In other words, this texture image
1067 * is first detached from all attachment points in the currently bound
1068 * framebuffer. Note that the texture image is specifically not
1069 * detached from any other framebuffer objects. Detaching the texture
1070 * image from any other framebuffer objects is the responsibility of
1073 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1074 progress
= _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, texObj
);
1076 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1077 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1078 progress
= _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, texObj
)
1083 /* Vertices are already flushed by _mesa_DeleteTextures */
1084 ctx
->NewState
|= _NEW_BUFFERS
;
1089 * Check if the given texture object is bound to any texture image units and
1090 * unbind it if so (revert to default textures).
1093 unbind_texobj_from_texunits(struct gl_context
*ctx
,
1094 struct gl_texture_object
*texObj
)
1096 const gl_texture_index index
= texObj
->TargetIndex
;
1099 if (texObj
->Target
== 0)
1102 for (u
= 0; u
< ctx
->Texture
.NumCurrentTexUsed
; u
++) {
1103 struct gl_texture_unit
*unit
= &ctx
->Texture
.Unit
[u
];
1105 if (texObj
== unit
->CurrentTex
[index
]) {
1106 /* Bind the default texture for this unit/target */
1107 _mesa_reference_texobj(&unit
->CurrentTex
[index
],
1108 ctx
->Shared
->DefaultTex
[index
]);
1109 unit
->_BoundTextures
&= ~(1 << index
);
1116 * Check if the given texture object is bound to any shader image unit
1117 * and unbind it if that's the case.
1120 unbind_texobj_from_image_units(struct gl_context
*ctx
,
1121 struct gl_texture_object
*texObj
)
1125 for (i
= 0; i
< ctx
->Const
.MaxImageUnits
; i
++) {
1126 struct gl_image_unit
*unit
= &ctx
->ImageUnits
[i
];
1128 if (texObj
== unit
->TexObj
)
1129 _mesa_reference_texobj(&unit
->TexObj
, NULL
);
1135 * Delete named textures.
1137 * \param n number of textures to be deleted.
1138 * \param textures array of texture IDs to be deleted.
1140 * \sa glDeleteTextures().
1142 * If we're about to delete a texture that's currently bound to any
1143 * texture unit, unbind the texture first. Decrement the reference
1144 * count on the texture object and delete it if it's zero.
1145 * Recall that texture objects can be shared among several rendering
1149 _mesa_DeleteTextures( GLsizei n
, const GLuint
*textures
)
1151 GET_CURRENT_CONTEXT(ctx
);
1154 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1155 _mesa_debug(ctx
, "glDeleteTextures %d\n", n
);
1157 FLUSH_VERTICES(ctx
, 0); /* too complex */
1162 for (i
= 0; i
< n
; i
++) {
1163 if (textures
[i
] > 0) {
1164 struct gl_texture_object
*delObj
1165 = _mesa_lookup_texture(ctx
, textures
[i
]);
1168 _mesa_lock_texture(ctx
, delObj
);
1170 /* Check if texture is bound to any framebuffer objects.
1172 * See section 4.4.2.3 of GL_EXT_framebuffer_object.
1174 unbind_texobj_from_fbo(ctx
, delObj
);
1176 /* Check if this texture is currently bound to any texture units.
1179 unbind_texobj_from_texunits(ctx
, delObj
);
1181 /* Check if this texture is currently bound to any shader
1182 * image unit. If so, unbind it.
1183 * See section 3.9.X of GL_ARB_shader_image_load_store.
1185 unbind_texobj_from_image_units(ctx
, delObj
);
1187 _mesa_unlock_texture(ctx
, delObj
);
1189 ctx
->NewState
|= _NEW_TEXTURE
;
1191 /* The texture _name_ is now free for re-use.
1192 * Remove it from the hash table now.
1194 mtx_lock(&ctx
->Shared
->Mutex
);
1195 _mesa_HashRemove(ctx
->Shared
->TexObjects
, delObj
->Name
);
1196 mtx_unlock(&ctx
->Shared
->Mutex
);
1198 /* Unreference the texobj. If refcount hits zero, the texture
1201 _mesa_reference_texobj(&delObj
, NULL
);
1209 * Convert a GL texture target enum such as GL_TEXTURE_2D or GL_TEXTURE_3D
1210 * into the corresponding Mesa texture target index.
1211 * Note that proxy targets are not valid here.
1212 * \return TEXTURE_x_INDEX or -1 if target is invalid
1215 _mesa_tex_target_to_index(const struct gl_context
*ctx
, GLenum target
)
1219 return _mesa_is_desktop_gl(ctx
) ? TEXTURE_1D_INDEX
: -1;
1221 return TEXTURE_2D_INDEX
;
1223 return ctx
->API
!= API_OPENGLES
? TEXTURE_3D_INDEX
: -1;
1224 case GL_TEXTURE_CUBE_MAP
:
1225 return ctx
->Extensions
.ARB_texture_cube_map
1226 ? TEXTURE_CUBE_INDEX
: -1;
1227 case GL_TEXTURE_RECTANGLE
:
1228 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.NV_texture_rectangle
1229 ? TEXTURE_RECT_INDEX
: -1;
1230 case GL_TEXTURE_1D_ARRAY
:
1231 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_array
1232 ? TEXTURE_1D_ARRAY_INDEX
: -1;
1233 case GL_TEXTURE_2D_ARRAY
:
1234 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_array
)
1235 || _mesa_is_gles3(ctx
)
1236 ? TEXTURE_2D_ARRAY_INDEX
: -1;
1237 case GL_TEXTURE_BUFFER
:
1238 return ctx
->API
== API_OPENGL_CORE
&&
1239 ctx
->Extensions
.ARB_texture_buffer_object
?
1240 TEXTURE_BUFFER_INDEX
: -1;
1241 case GL_TEXTURE_EXTERNAL_OES
:
1242 return _mesa_is_gles(ctx
) && ctx
->Extensions
.OES_EGL_image_external
1243 ? TEXTURE_EXTERNAL_INDEX
: -1;
1244 case GL_TEXTURE_CUBE_MAP_ARRAY
:
1245 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_cube_map_array
1246 ? TEXTURE_CUBE_ARRAY_INDEX
: -1;
1247 case GL_TEXTURE_2D_MULTISAMPLE
:
1248 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_multisample
1249 ? TEXTURE_2D_MULTISAMPLE_INDEX
: -1;
1250 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
1251 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_multisample
1252 ? TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
: -1;
1260 * Bind a named texture to a texturing target.
1262 * \param target texture target.
1263 * \param texName texture name.
1265 * \sa glBindTexture().
1267 * Determines the old texture object bound and returns immediately if rebinding
1268 * the same texture. Get the current texture which is either a default texture
1269 * if name is null, a named texture from the hash, or a new texture if the
1270 * given texture name is new. Increments its reference count, binds it, and
1271 * calls dd_function_table::BindTexture. Decrements the old texture reference
1272 * count and deletes it if it reaches zero.
1275 _mesa_BindTexture( GLenum target
, GLuint texName
)
1277 GET_CURRENT_CONTEXT(ctx
);
1278 struct gl_texture_unit
*texUnit
= _mesa_get_current_tex_unit(ctx
);
1279 struct gl_texture_object
*newTexObj
= NULL
;
1282 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1283 _mesa_debug(ctx
, "glBindTexture %s %d\n",
1284 _mesa_lookup_enum_by_nr(target
), (GLint
) texName
);
1286 targetIndex
= _mesa_tex_target_to_index(ctx
, target
);
1287 if (targetIndex
< 0) {
1288 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindTexture(target)");
1291 assert(targetIndex
< NUM_TEXTURE_TARGETS
);
1294 * Get pointer to new texture object (newTexObj)
1297 /* Use a default texture object */
1298 newTexObj
= ctx
->Shared
->DefaultTex
[targetIndex
];
1301 /* non-default texture object */
1302 newTexObj
= _mesa_lookup_texture(ctx
, texName
);
1304 /* error checking */
1305 if (newTexObj
->Target
!= 0 && newTexObj
->Target
!= target
) {
1306 /* the named texture object's target doesn't match the given target */
1307 _mesa_error( ctx
, GL_INVALID_OPERATION
,
1308 "glBindTexture(target mismatch)" );
1311 if (newTexObj
->Target
== 0) {
1312 finish_texture_init(ctx
, target
, newTexObj
);
1316 if (ctx
->API
== API_OPENGL_CORE
) {
1317 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindTexture(non-gen name)");
1321 /* if this is a new texture id, allocate a texture object now */
1322 newTexObj
= ctx
->Driver
.NewTextureObject(ctx
, texName
, target
);
1324 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindTexture");
1328 /* and insert it into hash table */
1329 mtx_lock(&ctx
->Shared
->Mutex
);
1330 _mesa_HashInsert(ctx
->Shared
->TexObjects
, texName
, newTexObj
);
1331 mtx_unlock(&ctx
->Shared
->Mutex
);
1333 newTexObj
->Target
= target
;
1334 newTexObj
->TargetIndex
= targetIndex
;
1337 assert(valid_texture_object(newTexObj
));
1339 /* Check if this texture is only used by this context and is already bound.
1340 * If so, just return.
1343 GLboolean early_out
;
1344 mtx_lock(&ctx
->Shared
->Mutex
);
1345 early_out
= ((ctx
->Shared
->RefCount
== 1)
1346 && (newTexObj
== texUnit
->CurrentTex
[targetIndex
]));
1347 mtx_unlock(&ctx
->Shared
->Mutex
);
1353 /* flush before changing binding */
1354 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
1356 /* Do the actual binding. The refcount on the previously bound
1357 * texture object will be decremented. It'll be deleted if the
1360 _mesa_reference_texobj(&texUnit
->CurrentTex
[targetIndex
], newTexObj
);
1361 ctx
->Texture
.NumCurrentTexUsed
= MAX2(ctx
->Texture
.NumCurrentTexUsed
,
1362 ctx
->Texture
.CurrentUnit
+ 1);
1363 ASSERT(texUnit
->CurrentTex
[targetIndex
]);
1366 texUnit
->_BoundTextures
|= (1 << targetIndex
);
1368 texUnit
->_BoundTextures
&= ~(1 << targetIndex
);
1370 /* Pass BindTexture call to device driver */
1371 if (ctx
->Driver
.BindTexture
)
1372 ctx
->Driver
.BindTexture(ctx
, target
, newTexObj
);
1377 * Set texture priorities.
1379 * \param n number of textures.
1380 * \param texName texture names.
1381 * \param priorities corresponding texture priorities.
1383 * \sa glPrioritizeTextures().
1385 * Looks up each texture in the hash, clamps the corresponding priority between
1386 * 0.0 and 1.0, and calls dd_function_table::PrioritizeTexture.
1389 _mesa_PrioritizeTextures( GLsizei n
, const GLuint
*texName
,
1390 const GLclampf
*priorities
)
1392 GET_CURRENT_CONTEXT(ctx
);
1395 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1396 _mesa_debug(ctx
, "glPrioritizeTextures %d\n", n
);
1398 FLUSH_VERTICES(ctx
, 0);
1401 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPrioritizeTextures" );
1408 for (i
= 0; i
< n
; i
++) {
1409 if (texName
[i
] > 0) {
1410 struct gl_texture_object
*t
= _mesa_lookup_texture(ctx
, texName
[i
]);
1412 t
->Priority
= CLAMP( priorities
[i
], 0.0F
, 1.0F
);
1417 ctx
->NewState
|= _NEW_TEXTURE
;
1423 * See if textures are loaded in texture memory.
1425 * \param n number of textures to query.
1426 * \param texName array with the texture names.
1427 * \param residences array which will hold the residence status.
1429 * \return GL_TRUE if all textures are resident and \p residences is left unchanged,
1431 * Note: we assume all textures are always resident
1433 GLboolean GLAPIENTRY
1434 _mesa_AreTexturesResident(GLsizei n
, const GLuint
*texName
,
1435 GLboolean
*residences
)
1437 GET_CURRENT_CONTEXT(ctx
);
1438 GLboolean allResident
= GL_TRUE
;
1440 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1442 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1443 _mesa_debug(ctx
, "glAreTexturesResident %d\n", n
);
1446 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident(n)");
1450 if (!texName
|| !residences
)
1453 /* We only do error checking on the texture names */
1454 for (i
= 0; i
< n
; i
++) {
1455 struct gl_texture_object
*t
;
1456 if (texName
[i
] == 0) {
1457 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident");
1460 t
= _mesa_lookup_texture(ctx
, texName
[i
]);
1462 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident");
1472 * See if a name corresponds to a texture.
1474 * \param texture texture name.
1476 * \return GL_TRUE if texture name corresponds to a texture, or GL_FALSE
1479 * \sa glIsTexture().
1481 * Calls _mesa_HashLookup().
1483 GLboolean GLAPIENTRY
1484 _mesa_IsTexture( GLuint texture
)
1486 struct gl_texture_object
*t
;
1487 GET_CURRENT_CONTEXT(ctx
);
1488 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1490 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1491 _mesa_debug(ctx
, "glIsTexture %d\n", texture
);
1496 t
= _mesa_lookup_texture(ctx
, texture
);
1498 /* IsTexture is true only after object has been bound once. */
1499 return t
&& t
->Target
;
1504 * Simplest implementation of texture locking: grab the shared tex
1505 * mutex. Examine the shared context state timestamp and if there has
1506 * been a change, set the appropriate bits in ctx->NewState.
1508 * This is used to deal with synchronizing things when a texture object
1509 * is used/modified by different contexts (or threads) which are sharing
1512 * See also _mesa_lock/unlock_texture() in teximage.h
1515 _mesa_lock_context_textures( struct gl_context
*ctx
)
1517 mtx_lock(&ctx
->Shared
->TexMutex
);
1519 if (ctx
->Shared
->TextureStateStamp
!= ctx
->TextureStateTimestamp
) {
1520 ctx
->NewState
|= _NEW_TEXTURE
;
1521 ctx
->TextureStateTimestamp
= ctx
->Shared
->TextureStateStamp
;
1527 _mesa_unlock_context_textures( struct gl_context
*ctx
)
1529 assert(ctx
->Shared
->TextureStateStamp
== ctx
->TextureStateTimestamp
);
1530 mtx_unlock(&ctx
->Shared
->TexMutex
);
1534 _mesa_InvalidateTexSubImage(GLuint texture
, GLint level
, GLint xoffset
,
1535 GLint yoffset
, GLint zoffset
, GLsizei width
,
1536 GLsizei height
, GLsizei depth
)
1538 struct gl_texture_object
*t
;
1539 struct gl_texture_image
*image
;
1540 GET_CURRENT_CONTEXT(ctx
);
1542 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1543 _mesa_debug(ctx
, "glInvalidateTexSubImage %d\n", texture
);
1545 t
= invalidate_tex_image_error_check(ctx
, texture
, level
,
1546 "glInvalidateTexSubImage");
1548 /* The GL_ARB_invalidate_subdata spec says:
1550 * "...the specified subregion must be between -<b> and <dim>+<b> where
1551 * <dim> is the size of the dimension of the texture image, and <b> is
1552 * the size of the border of that texture image, otherwise
1553 * INVALID_VALUE is generated (border is not applied to dimensions that
1554 * don't exist in a given texture target)."
1556 image
= t
->Image
[0][level
];
1565 /* The GL_ARB_invalidate_subdata spec says:
1567 * "For texture targets that don't have certain dimensions, this
1568 * command treats those dimensions as having a size of 1. For
1569 * example, to invalidate a portion of a two-dimensional texture,
1570 * the application would use <zoffset> equal to zero and <depth>
1573 switch (t
->Target
) {
1574 case GL_TEXTURE_BUFFER
:
1583 xBorder
= image
->Border
;
1586 imageWidth
= image
->Width
;
1590 case GL_TEXTURE_1D_ARRAY
:
1591 xBorder
= image
->Border
;
1594 imageWidth
= image
->Width
;
1595 imageHeight
= image
->Height
;
1599 case GL_TEXTURE_CUBE_MAP
:
1600 case GL_TEXTURE_RECTANGLE
:
1601 case GL_TEXTURE_2D_MULTISAMPLE
:
1602 xBorder
= image
->Border
;
1603 yBorder
= image
->Border
;
1605 imageWidth
= image
->Width
;
1606 imageHeight
= image
->Height
;
1609 case GL_TEXTURE_2D_ARRAY
:
1610 case GL_TEXTURE_CUBE_MAP_ARRAY
:
1611 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
1612 xBorder
= image
->Border
;
1613 yBorder
= image
->Border
;
1615 imageWidth
= image
->Width
;
1616 imageHeight
= image
->Height
;
1617 imageDepth
= image
->Depth
;
1620 xBorder
= image
->Border
;
1621 yBorder
= image
->Border
;
1622 zBorder
= image
->Border
;
1623 imageWidth
= image
->Width
;
1624 imageHeight
= image
->Height
;
1625 imageDepth
= image
->Depth
;
1628 assert(!"Should not get here.");
1638 if (xoffset
< -xBorder
) {
1639 _mesa_error(ctx
, GL_INVALID_VALUE
, "glInvalidateSubTexImage(xoffset)");
1643 if (xoffset
+ width
> imageWidth
+ xBorder
) {
1644 _mesa_error(ctx
, GL_INVALID_VALUE
,
1645 "glInvalidateSubTexImage(xoffset+width)");
1649 if (yoffset
< -yBorder
) {
1650 _mesa_error(ctx
, GL_INVALID_VALUE
, "glInvalidateSubTexImage(yoffset)");
1654 if (yoffset
+ height
> imageHeight
+ yBorder
) {
1655 _mesa_error(ctx
, GL_INVALID_VALUE
,
1656 "glInvalidateSubTexImage(yoffset+height)");
1660 if (zoffset
< -zBorder
) {
1661 _mesa_error(ctx
, GL_INVALID_VALUE
,
1662 "glInvalidateSubTexImage(zoffset)");
1666 if (zoffset
+ depth
> imageDepth
+ zBorder
) {
1667 _mesa_error(ctx
, GL_INVALID_VALUE
,
1668 "glInvalidateSubTexImage(zoffset+depth)");
1673 /* We don't actually do anything for this yet. Just return after
1674 * validating the parameters and generating the required errors.
1680 _mesa_InvalidateTexImage(GLuint texture
, GLint level
)
1682 GET_CURRENT_CONTEXT(ctx
);
1684 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1685 _mesa_debug(ctx
, "glInvalidateTexImage(%d, %d)\n", texture
, level
);
1687 invalidate_tex_image_error_check(ctx
, texture
, level
,
1688 "glInvalidateTexImage");
1690 /* We don't actually do anything for this yet. Just return after
1691 * validating the parameters and generating the required errors.