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
);
64 * Wrapper around _mesa_lookup_texture that throws GL_INVALID_OPERATION if id
65 * is not in the hash table. After calling _mesa_error, it returns NULL.
67 struct gl_texture_object
*
68 _mesa_lookup_texture_err(struct gl_context
*ctx
, GLuint id
, const char* func
)
70 struct gl_texture_object
*texObj
;
72 texObj
= _mesa_lookup_texture(ctx
, id
); /* Returns NULL if not found. */
75 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(texture)", func
);
81 _mesa_begin_texture_lookups(struct gl_context
*ctx
)
83 _mesa_HashLockMutex(ctx
->Shared
->TexObjects
);
88 _mesa_end_texture_lookups(struct gl_context
*ctx
)
90 _mesa_HashUnlockMutex(ctx
->Shared
->TexObjects
);
94 struct gl_texture_object
*
95 _mesa_lookup_texture_locked(struct gl_context
*ctx
, GLuint id
)
97 return (struct gl_texture_object
*)
98 _mesa_HashLookupLocked(ctx
->Shared
->TexObjects
, id
);
102 * Return a pointer to the current texture object for the given target
103 * on the current texture unit.
104 * Note: all <target> error checking should have been done by this point.
106 struct gl_texture_object
*
107 _mesa_get_current_tex_object(struct gl_context
*ctx
, GLenum target
)
109 struct gl_texture_unit
*texUnit
= _mesa_get_current_tex_unit(ctx
);
110 const GLboolean arrayTex
= ctx
->Extensions
.EXT_texture_array
;
114 return texUnit
->CurrentTex
[TEXTURE_1D_INDEX
];
115 case GL_PROXY_TEXTURE_1D
:
116 return ctx
->Texture
.ProxyTex
[TEXTURE_1D_INDEX
];
118 return texUnit
->CurrentTex
[TEXTURE_2D_INDEX
];
119 case GL_PROXY_TEXTURE_2D
:
120 return ctx
->Texture
.ProxyTex
[TEXTURE_2D_INDEX
];
122 return texUnit
->CurrentTex
[TEXTURE_3D_INDEX
];
123 case GL_PROXY_TEXTURE_3D
:
124 return ctx
->Texture
.ProxyTex
[TEXTURE_3D_INDEX
];
125 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
:
126 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB
:
127 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB
:
128 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB
:
129 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB
:
130 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
:
131 case GL_TEXTURE_CUBE_MAP_ARB
:
132 return ctx
->Extensions
.ARB_texture_cube_map
133 ? texUnit
->CurrentTex
[TEXTURE_CUBE_INDEX
] : NULL
;
134 case GL_PROXY_TEXTURE_CUBE_MAP_ARB
:
135 return ctx
->Extensions
.ARB_texture_cube_map
136 ? ctx
->Texture
.ProxyTex
[TEXTURE_CUBE_INDEX
] : NULL
;
137 case GL_TEXTURE_CUBE_MAP_ARRAY
:
138 return ctx
->Extensions
.ARB_texture_cube_map_array
139 ? texUnit
->CurrentTex
[TEXTURE_CUBE_ARRAY_INDEX
] : NULL
;
140 case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY
:
141 return ctx
->Extensions
.ARB_texture_cube_map_array
142 ? ctx
->Texture
.ProxyTex
[TEXTURE_CUBE_ARRAY_INDEX
] : NULL
;
143 case GL_TEXTURE_RECTANGLE_NV
:
144 return ctx
->Extensions
.NV_texture_rectangle
145 ? texUnit
->CurrentTex
[TEXTURE_RECT_INDEX
] : NULL
;
146 case GL_PROXY_TEXTURE_RECTANGLE_NV
:
147 return ctx
->Extensions
.NV_texture_rectangle
148 ? ctx
->Texture
.ProxyTex
[TEXTURE_RECT_INDEX
] : NULL
;
149 case GL_TEXTURE_1D_ARRAY_EXT
:
150 return arrayTex
? texUnit
->CurrentTex
[TEXTURE_1D_ARRAY_INDEX
] : NULL
;
151 case GL_PROXY_TEXTURE_1D_ARRAY_EXT
:
152 return arrayTex
? ctx
->Texture
.ProxyTex
[TEXTURE_1D_ARRAY_INDEX
] : NULL
;
153 case GL_TEXTURE_2D_ARRAY_EXT
:
154 return arrayTex
? texUnit
->CurrentTex
[TEXTURE_2D_ARRAY_INDEX
] : NULL
;
155 case GL_PROXY_TEXTURE_2D_ARRAY_EXT
:
156 return arrayTex
? ctx
->Texture
.ProxyTex
[TEXTURE_2D_ARRAY_INDEX
] : NULL
;
157 case GL_TEXTURE_BUFFER
:
158 return ctx
->API
== API_OPENGL_CORE
&&
159 ctx
->Extensions
.ARB_texture_buffer_object
?
160 texUnit
->CurrentTex
[TEXTURE_BUFFER_INDEX
] : NULL
;
161 case GL_TEXTURE_EXTERNAL_OES
:
162 return _mesa_is_gles(ctx
) && ctx
->Extensions
.OES_EGL_image_external
163 ? texUnit
->CurrentTex
[TEXTURE_EXTERNAL_INDEX
] : NULL
;
164 case GL_TEXTURE_2D_MULTISAMPLE
:
165 return ctx
->Extensions
.ARB_texture_multisample
166 ? texUnit
->CurrentTex
[TEXTURE_2D_MULTISAMPLE_INDEX
] : NULL
;
167 case GL_PROXY_TEXTURE_2D_MULTISAMPLE
:
168 return ctx
->Extensions
.ARB_texture_multisample
169 ? ctx
->Texture
.ProxyTex
[TEXTURE_2D_MULTISAMPLE_INDEX
] : NULL
;
170 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
171 return ctx
->Extensions
.ARB_texture_multisample
172 ? texUnit
->CurrentTex
[TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
] : NULL
;
173 case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY
:
174 return ctx
->Extensions
.ARB_texture_multisample
175 ? ctx
->Texture
.ProxyTex
[TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
] : NULL
;
177 _mesa_problem(NULL
, "bad target in _mesa_get_current_tex_object()");
184 * Allocate and initialize a new texture object. But don't put it into the
185 * texture object hash table.
187 * Called via ctx->Driver.NewTextureObject, unless overridden by a device
190 * \param shared the shared GL state structure to contain the texture object
191 * \param name integer name for the texture object
192 * \param target either GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D,
193 * GL_TEXTURE_CUBE_MAP_ARB or GL_TEXTURE_RECTANGLE_NV. zero is ok for the sake
196 * \return pointer to new texture object.
198 struct gl_texture_object
*
199 _mesa_new_texture_object( struct gl_context
*ctx
, GLuint name
, GLenum target
)
201 struct gl_texture_object
*obj
;
203 obj
= MALLOC_STRUCT(gl_texture_object
);
204 _mesa_initialize_texture_object(ctx
, obj
, name
, target
);
210 * Initialize a new texture object to default values.
211 * \param obj the texture object
212 * \param name the texture name
213 * \param target the texture target
216 _mesa_initialize_texture_object( struct gl_context
*ctx
,
217 struct gl_texture_object
*obj
,
218 GLuint name
, GLenum target
)
220 ASSERT(target
== 0 ||
221 target
== GL_TEXTURE_1D
||
222 target
== GL_TEXTURE_2D
||
223 target
== GL_TEXTURE_3D
||
224 target
== GL_TEXTURE_CUBE_MAP_ARB
||
225 target
== GL_TEXTURE_RECTANGLE_NV
||
226 target
== GL_TEXTURE_1D_ARRAY_EXT
||
227 target
== GL_TEXTURE_2D_ARRAY_EXT
||
228 target
== GL_TEXTURE_EXTERNAL_OES
||
229 target
== GL_TEXTURE_CUBE_MAP_ARRAY
||
230 target
== GL_TEXTURE_BUFFER
||
231 target
== GL_TEXTURE_2D_MULTISAMPLE
||
232 target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
234 memset(obj
, 0, sizeof(*obj
));
235 /* init the non-zero fields */
236 mtx_init(&obj
->Mutex
, mtx_plain
);
239 obj
->Target
= target
;
240 obj
->Priority
= 1.0F
;
242 obj
->MaxLevel
= 1000;
244 /* must be one; no support for (YUV) planes in separate buffers */
245 obj
->RequiredTextureImageUnits
= 1;
248 if (target
== GL_TEXTURE_RECTANGLE_NV
||
249 target
== GL_TEXTURE_EXTERNAL_OES
) {
250 obj
->Sampler
.WrapS
= GL_CLAMP_TO_EDGE
;
251 obj
->Sampler
.WrapT
= GL_CLAMP_TO_EDGE
;
252 obj
->Sampler
.WrapR
= GL_CLAMP_TO_EDGE
;
253 obj
->Sampler
.MinFilter
= GL_LINEAR
;
256 obj
->Sampler
.WrapS
= GL_REPEAT
;
257 obj
->Sampler
.WrapT
= GL_REPEAT
;
258 obj
->Sampler
.WrapR
= GL_REPEAT
;
259 obj
->Sampler
.MinFilter
= GL_NEAREST_MIPMAP_LINEAR
;
261 obj
->Sampler
.MagFilter
= GL_LINEAR
;
262 obj
->Sampler
.MinLod
= -1000.0;
263 obj
->Sampler
.MaxLod
= 1000.0;
264 obj
->Sampler
.LodBias
= 0.0;
265 obj
->Sampler
.MaxAnisotropy
= 1.0;
266 obj
->Sampler
.CompareMode
= GL_NONE
; /* ARB_shadow */
267 obj
->Sampler
.CompareFunc
= GL_LEQUAL
; /* ARB_shadow */
268 obj
->DepthMode
= ctx
->API
== API_OPENGL_CORE
? GL_RED
: GL_LUMINANCE
;
269 obj
->StencilSampling
= false;
270 obj
->Sampler
.CubeMapSeamless
= GL_FALSE
;
271 obj
->Swizzle
[0] = GL_RED
;
272 obj
->Swizzle
[1] = GL_GREEN
;
273 obj
->Swizzle
[2] = GL_BLUE
;
274 obj
->Swizzle
[3] = GL_ALPHA
;
275 obj
->_Swizzle
= SWIZZLE_NOOP
;
276 obj
->Sampler
.sRGBDecode
= GL_DECODE_EXT
;
277 obj
->BufferObjectFormat
= GL_R8
;
278 obj
->_BufferObjectFormat
= MESA_FORMAT_R_UNORM8
;
279 obj
->ImageFormatCompatibilityType
= GL_IMAGE_FORMAT_COMPATIBILITY_BY_SIZE
;
284 * Some texture initialization can't be finished until we know which
285 * target it's getting bound to (GL_TEXTURE_1D/2D/etc).
288 finish_texture_init(struct gl_context
*ctx
, GLenum target
,
289 struct gl_texture_object
*obj
)
291 GLenum filter
= GL_LINEAR
;
292 assert(obj
->Target
== 0);
295 case GL_TEXTURE_2D_MULTISAMPLE
:
296 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
300 case GL_TEXTURE_RECTANGLE_NV
:
301 case GL_TEXTURE_EXTERNAL_OES
:
302 /* have to init wrap and filter state here - kind of klunky */
303 obj
->Sampler
.WrapS
= GL_CLAMP_TO_EDGE
;
304 obj
->Sampler
.WrapT
= GL_CLAMP_TO_EDGE
;
305 obj
->Sampler
.WrapR
= GL_CLAMP_TO_EDGE
;
306 obj
->Sampler
.MinFilter
= filter
;
307 obj
->Sampler
.MagFilter
= filter
;
308 if (ctx
->Driver
.TexParameter
) {
309 static const GLfloat fparam_wrap
[1] = {(GLfloat
) GL_CLAMP_TO_EDGE
};
310 const GLfloat fparam_filter
[1] = {(GLfloat
) filter
};
311 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_S
, fparam_wrap
);
312 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_T
, fparam_wrap
);
313 ctx
->Driver
.TexParameter(ctx
, obj
, GL_TEXTURE_WRAP_R
, fparam_wrap
);
314 ctx
->Driver
.TexParameter(ctx
, obj
,
315 GL_TEXTURE_MIN_FILTER
, fparam_filter
);
316 ctx
->Driver
.TexParameter(ctx
, obj
,
317 GL_TEXTURE_MAG_FILTER
, fparam_filter
);
322 /* nothing needs done */
329 * Deallocate a texture object struct. It should have already been
330 * removed from the texture object pool.
331 * Called via ctx->Driver.DeleteTexture() if not overriden by a driver.
333 * \param shared the shared GL state to which the object belongs.
334 * \param texObj the texture object to delete.
337 _mesa_delete_texture_object(struct gl_context
*ctx
,
338 struct gl_texture_object
*texObj
)
342 /* Set Target to an invalid value. With some assertions elsewhere
343 * we can try to detect possible use of deleted textures.
345 texObj
->Target
= 0x99;
347 /* free the texture images */
348 for (face
= 0; face
< 6; face
++) {
349 for (i
= 0; i
< MAX_TEXTURE_LEVELS
; i
++) {
350 if (texObj
->Image
[face
][i
]) {
351 ctx
->Driver
.DeleteTextureImage(ctx
, texObj
->Image
[face
][i
]);
356 _mesa_reference_buffer_object(ctx
, &texObj
->BufferObject
, NULL
);
358 /* destroy the mutex -- it may have allocated memory (eg on bsd) */
359 mtx_destroy(&texObj
->Mutex
);
363 /* free this object */
369 * Copy texture object state from one texture object to another.
370 * Use for glPush/PopAttrib.
372 * \param dest destination texture object.
373 * \param src source texture object.
376 _mesa_copy_texture_object( struct gl_texture_object
*dest
,
377 const struct gl_texture_object
*src
)
379 dest
->Target
= src
->Target
;
380 dest
->TargetIndex
= src
->TargetIndex
;
381 dest
->Name
= src
->Name
;
382 dest
->Priority
= src
->Priority
;
383 dest
->Sampler
.BorderColor
.f
[0] = src
->Sampler
.BorderColor
.f
[0];
384 dest
->Sampler
.BorderColor
.f
[1] = src
->Sampler
.BorderColor
.f
[1];
385 dest
->Sampler
.BorderColor
.f
[2] = src
->Sampler
.BorderColor
.f
[2];
386 dest
->Sampler
.BorderColor
.f
[3] = src
->Sampler
.BorderColor
.f
[3];
387 dest
->Sampler
.WrapS
= src
->Sampler
.WrapS
;
388 dest
->Sampler
.WrapT
= src
->Sampler
.WrapT
;
389 dest
->Sampler
.WrapR
= src
->Sampler
.WrapR
;
390 dest
->Sampler
.MinFilter
= src
->Sampler
.MinFilter
;
391 dest
->Sampler
.MagFilter
= src
->Sampler
.MagFilter
;
392 dest
->Sampler
.MinLod
= src
->Sampler
.MinLod
;
393 dest
->Sampler
.MaxLod
= src
->Sampler
.MaxLod
;
394 dest
->Sampler
.LodBias
= src
->Sampler
.LodBias
;
395 dest
->BaseLevel
= src
->BaseLevel
;
396 dest
->MaxLevel
= src
->MaxLevel
;
397 dest
->Sampler
.MaxAnisotropy
= src
->Sampler
.MaxAnisotropy
;
398 dest
->Sampler
.CompareMode
= src
->Sampler
.CompareMode
;
399 dest
->Sampler
.CompareFunc
= src
->Sampler
.CompareFunc
;
400 dest
->Sampler
.CubeMapSeamless
= src
->Sampler
.CubeMapSeamless
;
401 dest
->DepthMode
= src
->DepthMode
;
402 dest
->StencilSampling
= src
->StencilSampling
;
403 dest
->Sampler
.sRGBDecode
= src
->Sampler
.sRGBDecode
;
404 dest
->_MaxLevel
= src
->_MaxLevel
;
405 dest
->_MaxLambda
= src
->_MaxLambda
;
406 dest
->GenerateMipmap
= src
->GenerateMipmap
;
407 dest
->_BaseComplete
= src
->_BaseComplete
;
408 dest
->_MipmapComplete
= src
->_MipmapComplete
;
409 COPY_4V(dest
->Swizzle
, src
->Swizzle
);
410 dest
->_Swizzle
= src
->_Swizzle
;
412 dest
->RequiredTextureImageUnits
= src
->RequiredTextureImageUnits
;
417 * Free all texture images of the given texture object.
419 * \param ctx GL context.
420 * \param t texture object.
422 * \sa _mesa_clear_texture_image().
425 _mesa_clear_texture_object(struct gl_context
*ctx
,
426 struct gl_texture_object
*texObj
)
430 if (texObj
->Target
== 0)
433 for (i
= 0; i
< MAX_FACES
; i
++) {
434 for (j
= 0; j
< MAX_TEXTURE_LEVELS
; j
++) {
435 struct gl_texture_image
*texImage
= texObj
->Image
[i
][j
];
437 _mesa_clear_texture_image(ctx
, texImage
);
444 * Check if the given texture object is valid by examining its Target field.
445 * For debugging only.
448 valid_texture_object(const struct gl_texture_object
*tex
)
450 switch (tex
->Target
) {
455 case GL_TEXTURE_CUBE_MAP_ARB
:
456 case GL_TEXTURE_RECTANGLE_NV
:
457 case GL_TEXTURE_1D_ARRAY_EXT
:
458 case GL_TEXTURE_2D_ARRAY_EXT
:
459 case GL_TEXTURE_BUFFER
:
460 case GL_TEXTURE_EXTERNAL_OES
:
461 case GL_TEXTURE_CUBE_MAP_ARRAY
:
462 case GL_TEXTURE_2D_MULTISAMPLE
:
463 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
466 _mesa_problem(NULL
, "invalid reference to a deleted texture object");
469 _mesa_problem(NULL
, "invalid texture object Target 0x%x, Id = %u",
470 tex
->Target
, tex
->Name
);
477 * Reference (or unreference) a texture object.
478 * If '*ptr', decrement *ptr's refcount (and delete if it becomes zero).
479 * If 'tex' is non-null, increment its refcount.
480 * This is normally only called from the _mesa_reference_texobj() macro
481 * when there's a real pointer change.
484 _mesa_reference_texobj_(struct gl_texture_object
**ptr
,
485 struct gl_texture_object
*tex
)
490 /* Unreference the old texture */
491 GLboolean deleteFlag
= GL_FALSE
;
492 struct gl_texture_object
*oldTex
= *ptr
;
494 ASSERT(valid_texture_object(oldTex
));
495 (void) valid_texture_object
; /* silence warning in release builds */
497 mtx_lock(&oldTex
->Mutex
);
498 ASSERT(oldTex
->RefCount
> 0);
501 deleteFlag
= (oldTex
->RefCount
== 0);
502 mtx_unlock(&oldTex
->Mutex
);
505 GET_CURRENT_CONTEXT(ctx
);
507 ctx
->Driver
.DeleteTexture(ctx
, oldTex
);
509 _mesa_problem(NULL
, "Unable to delete texture, no context");
517 /* reference new texture */
518 ASSERT(valid_texture_object(tex
));
519 mtx_lock(&tex
->Mutex
);
520 if (tex
->RefCount
== 0) {
521 /* this texture's being deleted (look just above) */
522 /* Not sure this can every really happen. Warn if it does. */
523 _mesa_problem(NULL
, "referencing deleted texture object");
530 mtx_unlock(&tex
->Mutex
);
535 enum base_mipmap
{ BASE
, MIPMAP
};
539 * Mark a texture object as incomplete. There are actually three kinds of
541 * 1. "base incomplete": the base level of the texture is invalid so no
542 * texturing is possible.
543 * 2. "mipmap incomplete": a non-base level of the texture is invalid so
544 * mipmap filtering isn't possible, but non-mipmap filtering is.
545 * 3. "texture incompleteness": some combination of texture state and
546 * sampler state renders the texture incomplete.
548 * \param t texture object
549 * \param bm either BASE or MIPMAP to indicate what's incomplete
550 * \param fmt... string describing why it's incomplete (for debugging).
553 incomplete(struct gl_texture_object
*t
, enum base_mipmap bm
,
554 const char *fmt
, ...)
556 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_TEXTURE
) {
561 vsnprintf(s
, sizeof(s
), fmt
, args
);
564 _mesa_debug(NULL
, "Texture Obj %d incomplete because: %s\n", t
->Name
, s
);
568 t
->_BaseComplete
= GL_FALSE
;
569 t
->_MipmapComplete
= GL_FALSE
;
574 * Examine a texture object to determine if it is complete.
576 * The gl_texture_object::Complete flag will be set to GL_TRUE or GL_FALSE
579 * \param ctx GL context.
580 * \param t texture object.
582 * According to the texture target, verifies that each of the mipmaps is
583 * present and has the expected size.
586 _mesa_test_texobj_completeness( const struct gl_context
*ctx
,
587 struct gl_texture_object
*t
)
589 const GLint baseLevel
= t
->BaseLevel
;
590 const struct gl_texture_image
*baseImage
;
593 /* We'll set these to FALSE if tests fail below */
594 t
->_BaseComplete
= GL_TRUE
;
595 t
->_MipmapComplete
= GL_TRUE
;
597 if (t
->Target
== GL_TEXTURE_BUFFER
) {
598 /* Buffer textures are always considered complete. The obvious case where
599 * they would be incomplete (no BO attached) is actually specced to be
600 * undefined rendering results.
605 /* Detect cases where the application set the base level to an invalid
608 if ((baseLevel
< 0) || (baseLevel
>= MAX_TEXTURE_LEVELS
)) {
609 incomplete(t
, BASE
, "base level = %d is invalid", baseLevel
);
613 if (t
->MaxLevel
< baseLevel
) {
614 incomplete(t
, MIPMAP
, "MAX_LEVEL (%d) < BASE_LEVEL (%d)",
615 t
->MaxLevel
, baseLevel
);
619 baseImage
= t
->Image
[0][baseLevel
];
621 /* Always need the base level image */
623 incomplete(t
, BASE
, "Image[baseLevel=%d] == NULL", baseLevel
);
627 /* Check width/height/depth for zero */
628 if (baseImage
->Width
== 0 ||
629 baseImage
->Height
== 0 ||
630 baseImage
->Depth
== 0) {
631 incomplete(t
, BASE
, "texture width or height or depth = 0");
635 /* Check if the texture values are integer */
637 GLenum datatype
= _mesa_get_format_datatype(baseImage
->TexFormat
);
638 t
->_IsIntegerFormat
= datatype
== GL_INT
|| datatype
== GL_UNSIGNED_INT
;
641 /* Compute _MaxLevel (the maximum mipmap level we'll sample from given the
642 * mipmap image sizes and GL_TEXTURE_MAX_LEVEL state).
646 case GL_TEXTURE_1D_ARRAY_EXT
:
647 maxLevels
= ctx
->Const
.MaxTextureLevels
;
650 case GL_TEXTURE_2D_ARRAY_EXT
:
651 maxLevels
= ctx
->Const
.MaxTextureLevels
;
654 maxLevels
= ctx
->Const
.Max3DTextureLevels
;
656 case GL_TEXTURE_CUBE_MAP_ARB
:
657 case GL_TEXTURE_CUBE_MAP_ARRAY
:
658 maxLevels
= ctx
->Const
.MaxCubeTextureLevels
;
660 case GL_TEXTURE_RECTANGLE_NV
:
661 case GL_TEXTURE_BUFFER
:
662 case GL_TEXTURE_EXTERNAL_OES
:
663 case GL_TEXTURE_2D_MULTISAMPLE
:
664 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
665 maxLevels
= 1; /* no mipmapping */
668 _mesa_problem(ctx
, "Bad t->Target in _mesa_test_texobj_completeness");
672 ASSERT(maxLevels
> 0);
674 t
->_MaxLevel
= MIN3(t
->MaxLevel
,
675 /* 'p' in the GL spec */
676 (int) (baseLevel
+ baseImage
->MaxNumLevels
- 1),
677 /* 'q' in the GL spec */
681 /* Adjust max level for views: the data store may have more levels than
684 t
->_MaxLevel
= MIN2(t
->_MaxLevel
, t
->NumLevels
- 1);
687 /* Compute _MaxLambda = q - p in the spec used during mipmapping */
688 t
->_MaxLambda
= (GLfloat
) (t
->_MaxLevel
- baseLevel
);
691 /* This texture object was created with glTexStorage1/2/3D() so we
692 * know that all the mipmap levels are the right size and all cube
693 * map faces are the same size.
694 * We don't need to do any of the additional checks below.
699 if (t
->Target
== GL_TEXTURE_CUBE_MAP_ARB
) {
700 /* Make sure that all six cube map level 0 images are the same size.
701 * Note: we know that the image's width==height (we enforce that
702 * at glTexImage time) so we only need to test the width here.
705 assert(baseImage
->Width2
== baseImage
->Height
);
706 for (face
= 1; face
< 6; face
++) {
707 assert(t
->Image
[face
][baseLevel
] == NULL
||
708 t
->Image
[face
][baseLevel
]->Width2
==
709 t
->Image
[face
][baseLevel
]->Height2
);
710 if (t
->Image
[face
][baseLevel
] == NULL
||
711 t
->Image
[face
][baseLevel
]->Width2
!= baseImage
->Width2
) {
712 incomplete(t
, BASE
, "Cube face missing or mismatched size");
719 * Do mipmap consistency checking.
720 * Note: we don't care about the current texture sampler state here.
721 * To determine texture completeness we'll either look at _BaseComplete
722 * or _MipmapComplete depending on the current minification filter mode.
726 const GLint minLevel
= baseLevel
;
727 const GLint maxLevel
= t
->_MaxLevel
;
728 const GLuint numFaces
= _mesa_num_tex_faces(t
->Target
);
729 GLuint width
, height
, depth
, face
;
731 if (minLevel
> maxLevel
) {
732 incomplete(t
, MIPMAP
, "minLevel > maxLevel");
736 /* Get the base image's dimensions */
737 width
= baseImage
->Width2
;
738 height
= baseImage
->Height2
;
739 depth
= baseImage
->Depth2
;
741 /* Note: this loop will be a no-op for RECT, BUFFER, EXTERNAL,
742 * MULTISAMPLE and MULTISAMPLE_ARRAY textures
744 for (i
= baseLevel
+ 1; i
< maxLevels
; i
++) {
745 /* Compute the expected size of image at level[i] */
749 if (height
> 1 && t
->Target
!= GL_TEXTURE_1D_ARRAY
) {
752 if (depth
> 1 && t
->Target
!= GL_TEXTURE_2D_ARRAY
753 && t
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) {
757 /* loop over cube faces (or single face otherwise) */
758 for (face
= 0; face
< numFaces
; face
++) {
759 if (i
>= minLevel
&& i
<= maxLevel
) {
760 const struct gl_texture_image
*img
= t
->Image
[face
][i
];
763 incomplete(t
, MIPMAP
, "TexImage[%d] is missing", i
);
766 if (img
->TexFormat
!= baseImage
->TexFormat
) {
767 incomplete(t
, MIPMAP
, "Format[i] != Format[baseLevel]");
770 if (img
->Border
!= baseImage
->Border
) {
771 incomplete(t
, MIPMAP
, "Border[i] != Border[baseLevel]");
774 if (img
->Width2
!= width
) {
775 incomplete(t
, MIPMAP
, "TexImage[%d] bad width %u", i
,
779 if (img
->Height2
!= height
) {
780 incomplete(t
, MIPMAP
, "TexImage[%d] bad height %u", i
,
784 if (img
->Depth2
!= depth
) {
785 incomplete(t
, MIPMAP
, "TexImage[%d] bad depth %u", i
,
790 /* Extra checks for cube textures */
792 /* check that cube faces are the same size */
793 if (img
->Width2
!= t
->Image
[0][i
]->Width2
||
794 img
->Height2
!= t
->Image
[0][i
]->Height2
) {
795 incomplete(t
, MIPMAP
, "CubeMap Image[n][i] bad size");
802 if (width
== 1 && height
== 1 && depth
== 1) {
803 return; /* found smallest needed mipmap, all done! */
811 * Check if the given cube map texture is "cube complete" as defined in
812 * the OpenGL specification.
815 _mesa_cube_complete(const struct gl_texture_object
*texObj
)
817 const GLint baseLevel
= texObj
->BaseLevel
;
818 const struct gl_texture_image
*img0
, *img
;
821 if (texObj
->Target
!= GL_TEXTURE_CUBE_MAP
)
824 if ((baseLevel
< 0) || (baseLevel
>= MAX_TEXTURE_LEVELS
))
827 /* check first face */
828 img0
= texObj
->Image
[0][baseLevel
];
831 img0
->Width
!= img0
->Height
)
834 /* check remaining faces vs. first face */
835 for (face
= 1; face
< 6; face
++) {
836 img
= texObj
->Image
[face
][baseLevel
];
838 img
->Width
!= img0
->Width
||
839 img
->Height
!= img0
->Height
||
840 img
->TexFormat
!= img0
->TexFormat
)
849 * Mark a texture object dirty. It forces the object to be incomplete
850 * and forces the context to re-validate its state.
852 * \param ctx GL context.
853 * \param texObj texture object.
856 _mesa_dirty_texobj(struct gl_context
*ctx
, struct gl_texture_object
*texObj
)
858 texObj
->_BaseComplete
= GL_FALSE
;
859 texObj
->_MipmapComplete
= GL_FALSE
;
860 ctx
->NewState
|= _NEW_TEXTURE
;
865 * Return pointer to a default/fallback texture of the given type/target.
866 * The texture is an RGBA texture with all texels = (0,0,0,1).
867 * That's the value a GLSL sampler should get when sampling from an
868 * incomplete texture.
870 struct gl_texture_object
*
871 _mesa_get_fallback_texture(struct gl_context
*ctx
, gl_texture_index tex
)
873 if (!ctx
->Shared
->FallbackTex
[tex
]) {
874 /* create fallback texture now */
875 const GLsizei width
= 1, height
= 1;
878 struct gl_texture_object
*texObj
;
879 struct gl_texture_image
*texImage
;
880 mesa_format texFormat
;
881 GLuint dims
, face
, numFaces
= 1;
884 for (face
= 0; face
< 6; face
++) {
887 texel
[4*face
+ 2] = 0x0;
888 texel
[4*face
+ 3] = 0xff;
892 case TEXTURE_2D_ARRAY_INDEX
:
894 target
= GL_TEXTURE_2D_ARRAY
;
896 case TEXTURE_1D_ARRAY_INDEX
:
898 target
= GL_TEXTURE_1D_ARRAY
;
900 case TEXTURE_CUBE_INDEX
:
902 target
= GL_TEXTURE_CUBE_MAP
;
905 case TEXTURE_3D_INDEX
:
907 target
= GL_TEXTURE_3D
;
909 case TEXTURE_RECT_INDEX
:
911 target
= GL_TEXTURE_RECTANGLE
;
913 case TEXTURE_2D_INDEX
:
915 target
= GL_TEXTURE_2D
;
917 case TEXTURE_1D_INDEX
:
919 target
= GL_TEXTURE_1D
;
921 case TEXTURE_BUFFER_INDEX
:
923 target
= GL_TEXTURE_BUFFER
;
925 case TEXTURE_CUBE_ARRAY_INDEX
:
927 target
= GL_TEXTURE_CUBE_MAP_ARRAY
;
930 case TEXTURE_EXTERNAL_INDEX
:
932 target
= GL_TEXTURE_EXTERNAL_OES
;
934 case TEXTURE_2D_MULTISAMPLE_INDEX
:
936 target
= GL_TEXTURE_2D_MULTISAMPLE
;
938 case TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
:
940 target
= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
;
947 /* create texture object */
948 texObj
= ctx
->Driver
.NewTextureObject(ctx
, 0, target
);
952 assert(texObj
->RefCount
== 1);
953 texObj
->Sampler
.MinFilter
= GL_NEAREST
;
954 texObj
->Sampler
.MagFilter
= GL_NEAREST
;
956 texFormat
= ctx
->Driver
.ChooseTextureFormat(ctx
, target
,
960 /* need a loop here just for cube maps */
961 for (face
= 0; face
< numFaces
; face
++) {
964 if (target
== GL_TEXTURE_CUBE_MAP
)
965 faceTarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ face
;
969 /* initialize level[0] texture image */
970 texImage
= _mesa_get_tex_image(ctx
, texObj
, faceTarget
, 0);
972 _mesa_init_teximage_fields(ctx
, texImage
,
974 (dims
> 1) ? height
: 1,
975 (dims
> 2) ? depth
: 1,
979 ctx
->Driver
.TexImage(ctx
, dims
, texImage
,
980 GL_RGBA
, GL_UNSIGNED_BYTE
, texel
,
981 &ctx
->DefaultPacking
);
984 _mesa_test_texobj_completeness(ctx
, texObj
);
985 assert(texObj
->_BaseComplete
);
986 assert(texObj
->_MipmapComplete
);
988 ctx
->Shared
->FallbackTex
[tex
] = texObj
;
990 return ctx
->Shared
->FallbackTex
[tex
];
995 * Compute the size of the given texture object, in bytes.
998 texture_size(const struct gl_texture_object
*texObj
)
1000 const GLuint numFaces
= _mesa_num_tex_faces(texObj
->Target
);
1001 GLuint face
, level
, size
= 0;
1003 for (face
= 0; face
< numFaces
; face
++) {
1004 for (level
= 0; level
< MAX_TEXTURE_LEVELS
; level
++) {
1005 const struct gl_texture_image
*img
= texObj
->Image
[face
][level
];
1007 GLuint sz
= _mesa_format_image_size(img
->TexFormat
, img
->Width
,
1008 img
->Height
, img
->Depth
);
1019 * Callback called from _mesa_HashWalk()
1022 count_tex_size(GLuint key
, void *data
, void *userData
)
1024 const struct gl_texture_object
*texObj
=
1025 (const struct gl_texture_object
*) data
;
1026 GLuint
*total
= (GLuint
*) userData
;
1030 *total
= *total
+ texture_size(texObj
);
1035 * Compute total size (in bytes) of all textures for the given context.
1036 * For debugging purposes.
1039 _mesa_total_texture_memory(struct gl_context
*ctx
)
1041 GLuint tgt
, total
= 0;
1043 _mesa_HashWalk(ctx
->Shared
->TexObjects
, count_tex_size
, &total
);
1045 /* plus, the default texture objects */
1046 for (tgt
= 0; tgt
< NUM_TEXTURE_TARGETS
; tgt
++) {
1047 total
+= texture_size(ctx
->Shared
->DefaultTex
[tgt
]);
1055 * Return the base format for the given texture object by looking
1056 * at the base texture image.
1057 * \return base format (such as GL_RGBA) or GL_NONE if it can't be determined
1060 _mesa_texture_base_format(const struct gl_texture_object
*texObj
)
1062 const struct gl_texture_image
*texImage
= _mesa_base_tex_image(texObj
);
1064 return texImage
? texImage
->_BaseFormat
: GL_NONE
;
1068 static struct gl_texture_object
*
1069 invalidate_tex_image_error_check(struct gl_context
*ctx
, GLuint texture
,
1070 GLint level
, const char *name
)
1072 /* The GL_ARB_invalidate_subdata spec says:
1074 * "If <texture> is zero or is not the name of a texture, the error
1075 * INVALID_VALUE is generated."
1077 * This performs the error check in a different order than listed in the
1078 * spec. We have to get the texture object before we can validate the
1079 * other parameters against values in the texture object.
1081 struct gl_texture_object
*const t
= _mesa_lookup_texture(ctx
, texture
);
1082 if (texture
== 0 || t
== NULL
) {
1083 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(texture)", name
);
1087 /* The GL_ARB_invalidate_subdata spec says:
1089 * "If <level> is less than zero or greater than the base 2 logarithm
1090 * of the maximum texture width, height, or depth, the error
1091 * INVALID_VALUE is generated."
1093 if (level
< 0 || level
> t
->MaxLevel
) {
1094 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(level)", name
);
1098 /* The GL_ARB_invalidate_subdata spec says:
1100 * "If the target of <texture> is TEXTURE_RECTANGLE, TEXTURE_BUFFER,
1101 * TEXTURE_2D_MULTISAMPLE, or TEXTURE_2D_MULTISAMPLE_ARRAY, and <level>
1102 * is not zero, the error INVALID_VALUE is generated."
1105 switch (t
->Target
) {
1106 case GL_TEXTURE_RECTANGLE
:
1107 case GL_TEXTURE_BUFFER
:
1108 case GL_TEXTURE_2D_MULTISAMPLE
:
1109 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
1110 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(level)", name
);
1122 * Helper function for glCreateTextures and glGenTextures. Need this because
1123 * glCreateTextures should throw errors if target = 0. This is not exposed to
1124 * the rest of Mesa to encourage Mesa internals to use nameless textures,
1125 * which do not require expensive hash lookups.
1128 create_textures(struct gl_context
*ctx
, GLenum target
,
1129 GLsizei n
, GLuint
*textures
, bool dsa
)
1133 const char *func
= dsa
? "Create" : "Gen";
1135 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1136 _mesa_debug(ctx
, "gl%sTextures %d\n", func
, n
);
1139 _mesa_error( ctx
, GL_INVALID_VALUE
, "gl%sTextures(n < 0)", func
);
1147 * This must be atomic (generation and allocation of texture IDs)
1149 mtx_lock(&ctx
->Shared
->Mutex
);
1151 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->TexObjects
, n
);
1153 /* Allocate new, empty texture objects */
1154 for (i
= 0; i
< n
; i
++) {
1155 struct gl_texture_object
*texObj
;
1157 GLuint name
= first
+ i
;
1158 texObj
= ctx
->Driver
.NewTextureObject(ctx
, name
, target
);
1160 mtx_unlock(&ctx
->Shared
->Mutex
);
1161 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "gl%sTextures", func
);
1165 /* Initialize the target index if target is non-zero. */
1167 targetIndex
= _mesa_tex_target_to_index(ctx
, texObj
->Target
);
1168 if (targetIndex
< 0) { /* Bad Target */
1169 mtx_unlock(&ctx
->Shared
->Mutex
);
1170 _mesa_error(ctx
, GL_INVALID_ENUM
, "gl%sTextures(target = %s)",
1171 func
, _mesa_lookup_enum_by_nr(texObj
->Target
));
1174 assert(targetIndex
< NUM_TEXTURE_TARGETS
);
1175 texObj
->TargetIndex
= targetIndex
;
1178 /* insert into hash table */
1179 _mesa_HashInsert(ctx
->Shared
->TexObjects
, texObj
->Name
, texObj
);
1184 mtx_unlock(&ctx
->Shared
->Mutex
);
1190 /***********************************************************************/
1191 /** \name API functions */
1196 * Generate texture names.
1198 * \param n number of texture names to be generated.
1199 * \param textures an array in which will hold the generated texture names.
1201 * \sa glGenTextures(), glCreateTextures().
1203 * Calls _mesa_HashFindFreeKeyBlock() to find a block of free texture
1204 * IDs which are stored in \p textures. Corresponding empty texture
1205 * objects are also generated.
1208 _mesa_GenTextures(GLsizei n
, GLuint
*textures
)
1210 GET_CURRENT_CONTEXT(ctx
);
1211 create_textures(ctx
, 0, n
, textures
, false);
1215 * Create texture objects.
1217 * \param target the texture target for each name to be generated.
1218 * \param n number of texture names to be generated.
1219 * \param textures an array in which will hold the generated texture names.
1221 * \sa glCreateTextures(), glGenTextures().
1223 * Calls _mesa_HashFindFreeKeyBlock() to find a block of free texture
1224 * IDs which are stored in \p textures. Corresponding empty texture
1225 * objects are also generated.
1228 _mesa_CreateTextures(GLenum target
, GLsizei n
, GLuint
*textures
)
1231 GET_CURRENT_CONTEXT(ctx
);
1234 * The 4.5 core profile spec (30.10.2014) doesn't specify what
1235 * glCreateTextures should do with invalid targets, which was probably an
1236 * oversight. This conforms to the spec for glBindTexture.
1238 targetIndex
= _mesa_tex_target_to_index(ctx
, target
);
1239 if (targetIndex
< 0) {
1240 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCreateTextures(target)");
1244 create_textures(ctx
, target
, n
, textures
, true);
1248 * Check if the given texture object is bound to the current draw or
1249 * read framebuffer. If so, Unbind it.
1252 unbind_texobj_from_fbo(struct gl_context
*ctx
,
1253 struct gl_texture_object
*texObj
)
1255 bool progress
= false;
1257 /* Section 4.4.2 (Attaching Images to Framebuffer Objects), subsection
1258 * "Attaching Texture Images to a Framebuffer," of the OpenGL 3.1 spec
1261 * "If a texture object is deleted while its image is attached to one
1262 * or more attachment points in the currently bound framebuffer, then
1263 * it is as if FramebufferTexture* had been called, with a texture of
1264 * zero, for each attachment point to which this image was attached in
1265 * the currently bound framebuffer. In other words, this texture image
1266 * is first detached from all attachment points in the currently bound
1267 * framebuffer. Note that the texture image is specifically not
1268 * detached from any other framebuffer objects. Detaching the texture
1269 * image from any other framebuffer objects is the responsibility of
1272 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1273 progress
= _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, texObj
);
1275 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1276 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1277 progress
= _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, texObj
)
1282 /* Vertices are already flushed by _mesa_DeleteTextures */
1283 ctx
->NewState
|= _NEW_BUFFERS
;
1288 * Check if the given texture object is bound to any texture image units and
1289 * unbind it if so (revert to default textures).
1292 unbind_texobj_from_texunits(struct gl_context
*ctx
,
1293 struct gl_texture_object
*texObj
)
1295 const gl_texture_index index
= texObj
->TargetIndex
;
1298 if (texObj
->Target
== 0)
1301 for (u
= 0; u
< ctx
->Texture
.NumCurrentTexUsed
; u
++) {
1302 struct gl_texture_unit
*unit
= &ctx
->Texture
.Unit
[u
];
1304 if (texObj
== unit
->CurrentTex
[index
]) {
1305 /* Bind the default texture for this unit/target */
1306 _mesa_reference_texobj(&unit
->CurrentTex
[index
],
1307 ctx
->Shared
->DefaultTex
[index
]);
1308 unit
->_BoundTextures
&= ~(1 << index
);
1315 * Check if the given texture object is bound to any shader image unit
1316 * and unbind it if that's the case.
1319 unbind_texobj_from_image_units(struct gl_context
*ctx
,
1320 struct gl_texture_object
*texObj
)
1324 for (i
= 0; i
< ctx
->Const
.MaxImageUnits
; i
++) {
1325 struct gl_image_unit
*unit
= &ctx
->ImageUnits
[i
];
1327 if (texObj
== unit
->TexObj
)
1328 _mesa_reference_texobj(&unit
->TexObj
, NULL
);
1334 * Unbinds all textures bound to the given texture image unit.
1337 unbind_textures_from_unit(struct gl_context
*ctx
, GLuint unit
)
1339 struct gl_texture_unit
*texUnit
= &ctx
->Texture
.Unit
[unit
];
1341 while (texUnit
->_BoundTextures
) {
1342 const GLuint index
= ffs(texUnit
->_BoundTextures
) - 1;
1343 struct gl_texture_object
*texObj
= ctx
->Shared
->DefaultTex
[index
];
1345 _mesa_reference_texobj(&texUnit
->CurrentTex
[index
], texObj
);
1347 /* Pass BindTexture call to device driver */
1348 if (ctx
->Driver
.BindTexture
)
1349 ctx
->Driver
.BindTexture(ctx
, unit
, 0, texObj
);
1351 texUnit
->_BoundTextures
&= ~(1 << index
);
1352 ctx
->NewState
|= _NEW_TEXTURE
;
1358 * Delete named textures.
1360 * \param n number of textures to be deleted.
1361 * \param textures array of texture IDs to be deleted.
1363 * \sa glDeleteTextures().
1365 * If we're about to delete a texture that's currently bound to any
1366 * texture unit, unbind the texture first. Decrement the reference
1367 * count on the texture object and delete it if it's zero.
1368 * Recall that texture objects can be shared among several rendering
1372 _mesa_DeleteTextures( GLsizei n
, const GLuint
*textures
)
1374 GET_CURRENT_CONTEXT(ctx
);
1377 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1378 _mesa_debug(ctx
, "glDeleteTextures %d\n", n
);
1380 FLUSH_VERTICES(ctx
, 0); /* too complex */
1385 for (i
= 0; i
< n
; i
++) {
1386 if (textures
[i
] > 0) {
1387 struct gl_texture_object
*delObj
1388 = _mesa_lookup_texture(ctx
, textures
[i
]);
1391 _mesa_lock_texture(ctx
, delObj
);
1393 /* Check if texture is bound to any framebuffer objects.
1395 * See section 4.4.2.3 of GL_EXT_framebuffer_object.
1397 unbind_texobj_from_fbo(ctx
, delObj
);
1399 /* Check if this texture is currently bound to any texture units.
1402 unbind_texobj_from_texunits(ctx
, delObj
);
1404 /* Check if this texture is currently bound to any shader
1405 * image unit. If so, unbind it.
1406 * See section 3.9.X of GL_ARB_shader_image_load_store.
1408 unbind_texobj_from_image_units(ctx
, delObj
);
1410 _mesa_unlock_texture(ctx
, delObj
);
1412 ctx
->NewState
|= _NEW_TEXTURE
;
1414 /* The texture _name_ is now free for re-use.
1415 * Remove it from the hash table now.
1417 mtx_lock(&ctx
->Shared
->Mutex
);
1418 _mesa_HashRemove(ctx
->Shared
->TexObjects
, delObj
->Name
);
1419 mtx_unlock(&ctx
->Shared
->Mutex
);
1421 /* Unreference the texobj. If refcount hits zero, the texture
1424 _mesa_reference_texobj(&delObj
, NULL
);
1432 * Convert a GL texture target enum such as GL_TEXTURE_2D or GL_TEXTURE_3D
1433 * into the corresponding Mesa texture target index.
1434 * Note that proxy targets are not valid here.
1435 * \return TEXTURE_x_INDEX or -1 if target is invalid
1438 _mesa_tex_target_to_index(const struct gl_context
*ctx
, GLenum target
)
1442 return _mesa_is_desktop_gl(ctx
) ? TEXTURE_1D_INDEX
: -1;
1444 return TEXTURE_2D_INDEX
;
1446 return ctx
->API
!= API_OPENGLES
? TEXTURE_3D_INDEX
: -1;
1447 case GL_TEXTURE_CUBE_MAP
:
1448 return ctx
->Extensions
.ARB_texture_cube_map
1449 ? TEXTURE_CUBE_INDEX
: -1;
1450 case GL_TEXTURE_RECTANGLE
:
1451 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.NV_texture_rectangle
1452 ? TEXTURE_RECT_INDEX
: -1;
1453 case GL_TEXTURE_1D_ARRAY
:
1454 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_array
1455 ? TEXTURE_1D_ARRAY_INDEX
: -1;
1456 case GL_TEXTURE_2D_ARRAY
:
1457 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_array
)
1458 || _mesa_is_gles3(ctx
)
1459 ? TEXTURE_2D_ARRAY_INDEX
: -1;
1460 case GL_TEXTURE_BUFFER
:
1461 return ctx
->API
== API_OPENGL_CORE
&&
1462 ctx
->Extensions
.ARB_texture_buffer_object
?
1463 TEXTURE_BUFFER_INDEX
: -1;
1464 case GL_TEXTURE_EXTERNAL_OES
:
1465 return _mesa_is_gles(ctx
) && ctx
->Extensions
.OES_EGL_image_external
1466 ? TEXTURE_EXTERNAL_INDEX
: -1;
1467 case GL_TEXTURE_CUBE_MAP_ARRAY
:
1468 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_cube_map_array
1469 ? TEXTURE_CUBE_ARRAY_INDEX
: -1;
1470 case GL_TEXTURE_2D_MULTISAMPLE
:
1471 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_multisample
1472 ? TEXTURE_2D_MULTISAMPLE_INDEX
: -1;
1473 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
1474 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_multisample
1475 ? TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX
: -1;
1483 * Bind a named texture to a texturing target.
1485 * \param target texture target.
1486 * \param texName texture name.
1488 * \sa glBindTexture().
1490 * Determines the old texture object bound and returns immediately if rebinding
1491 * the same texture. Get the current texture which is either a default texture
1492 * if name is null, a named texture from the hash, or a new texture if the
1493 * given texture name is new. Increments its reference count, binds it, and
1494 * calls dd_function_table::BindTexture. Decrements the old texture reference
1495 * count and deletes it if it reaches zero.
1498 _mesa_BindTexture( GLenum target
, GLuint texName
)
1500 GET_CURRENT_CONTEXT(ctx
);
1501 struct gl_texture_unit
*texUnit
= _mesa_get_current_tex_unit(ctx
);
1502 struct gl_texture_object
*newTexObj
= NULL
;
1505 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1506 _mesa_debug(ctx
, "glBindTexture %s %d\n",
1507 _mesa_lookup_enum_by_nr(target
), (GLint
) texName
);
1509 targetIndex
= _mesa_tex_target_to_index(ctx
, target
);
1510 if (targetIndex
< 0) {
1511 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindTexture(target)");
1514 assert(targetIndex
< NUM_TEXTURE_TARGETS
);
1517 * Get pointer to new texture object (newTexObj)
1520 /* Use a default texture object */
1521 newTexObj
= ctx
->Shared
->DefaultTex
[targetIndex
];
1524 /* non-default texture object */
1525 newTexObj
= _mesa_lookup_texture(ctx
, texName
);
1527 /* error checking */
1528 if (newTexObj
->Target
!= 0 && newTexObj
->Target
!= target
) {
1529 /* The named texture object's target doesn't match the
1532 _mesa_error( ctx
, GL_INVALID_OPERATION
,
1533 "glBindTexture(target mismatch)" );
1536 if (newTexObj
->Target
== 0) {
1537 finish_texture_init(ctx
, target
, newTexObj
);
1541 if (ctx
->API
== API_OPENGL_CORE
) {
1542 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1543 "glBindTexture(non-gen name)");
1547 /* if this is a new texture id, allocate a texture object now */
1548 newTexObj
= ctx
->Driver
.NewTextureObject(ctx
, texName
, target
);
1550 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindTexture");
1554 /* and insert it into hash table */
1555 mtx_lock(&ctx
->Shared
->Mutex
);
1556 _mesa_HashInsert(ctx
->Shared
->TexObjects
, texName
, newTexObj
);
1557 mtx_unlock(&ctx
->Shared
->Mutex
);
1559 newTexObj
->Target
= target
;
1560 newTexObj
->TargetIndex
= targetIndex
;
1563 assert(valid_texture_object(newTexObj
));
1565 /* Check if this texture is only used by this context and is already bound.
1566 * If so, just return.
1569 GLboolean early_out
;
1570 mtx_lock(&ctx
->Shared
->Mutex
);
1571 early_out
= ((ctx
->Shared
->RefCount
== 1)
1572 && (newTexObj
== texUnit
->CurrentTex
[targetIndex
]));
1573 mtx_unlock(&ctx
->Shared
->Mutex
);
1579 /* flush before changing binding */
1580 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
1582 /* Do the actual binding. The refcount on the previously bound
1583 * texture object will be decremented. It'll be deleted if the
1586 _mesa_reference_texobj(&texUnit
->CurrentTex
[targetIndex
], newTexObj
);
1587 ctx
->Texture
.NumCurrentTexUsed
= MAX2(ctx
->Texture
.NumCurrentTexUsed
,
1588 ctx
->Texture
.CurrentUnit
+ 1);
1589 ASSERT(texUnit
->CurrentTex
[targetIndex
]);
1592 texUnit
->_BoundTextures
|= (1 << targetIndex
);
1594 texUnit
->_BoundTextures
&= ~(1 << targetIndex
);
1596 /* Pass BindTexture call to device driver */
1597 if (ctx
->Driver
.BindTexture
)
1598 ctx
->Driver
.BindTexture(ctx
, ctx
->Texture
.CurrentUnit
, target
, newTexObj
);
1603 _mesa_BindTextures(GLuint first
, GLsizei count
, const GLuint
*textures
)
1605 GET_CURRENT_CONTEXT(ctx
);
1608 /* The ARB_multi_bind spec says:
1610 * "An INVALID_OPERATION error is generated if <first> + <count>
1611 * is greater than the number of texture image units supported
1612 * by the implementation."
1614 if (first
+ count
> ctx
->Const
.MaxCombinedTextureImageUnits
) {
1615 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1616 "glBindTextures(first=%u + count=%d > the value of "
1617 "GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS=%u)",
1618 first
, count
, ctx
->Const
.MaxCombinedTextureImageUnits
);
1622 /* Flush before changing bindings */
1623 FLUSH_VERTICES(ctx
, 0);
1625 ctx
->Texture
.NumCurrentTexUsed
= MAX2(ctx
->Texture
.NumCurrentTexUsed
,
1629 /* Note that the error semantics for multi-bind commands differ from
1630 * those of other GL commands.
1632 * The issues section in the ARB_multi_bind spec says:
1634 * "(11) Typically, OpenGL specifies that if an error is generated by
1635 * a command, that command has no effect. This is somewhat
1636 * unfortunate for multi-bind commands, because it would require
1637 * a first pass to scan the entire list of bound objects for
1638 * errors and then a second pass to actually perform the
1639 * bindings. Should we have different error semantics?
1641 * RESOLVED: Yes. In this specification, when the parameters for
1642 * one of the <count> binding points are invalid, that binding
1643 * point is not updated and an error will be generated. However,
1644 * other binding points in the same command will be updated if
1645 * their parameters are valid and no other error occurs."
1648 _mesa_begin_texture_lookups(ctx
);
1650 for (i
= 0; i
< count
; i
++) {
1651 if (textures
[i
] != 0) {
1652 struct gl_texture_unit
*texUnit
= &ctx
->Texture
.Unit
[first
+ i
];
1653 struct gl_texture_object
*current
= texUnit
->_Current
;
1654 struct gl_texture_object
*texObj
;
1656 if (current
&& current
->Name
== textures
[i
])
1659 texObj
= _mesa_lookup_texture_locked(ctx
, textures
[i
]);
1661 if (texObj
&& texObj
->Target
!= 0) {
1662 const gl_texture_index targetIndex
= texObj
->TargetIndex
;
1664 if (texUnit
->CurrentTex
[targetIndex
] != texObj
) {
1665 /* Do the actual binding. The refcount on the previously
1666 * bound texture object will be decremented. It will be
1667 * deleted if the count hits zero.
1669 _mesa_reference_texobj(&texUnit
->CurrentTex
[targetIndex
],
1672 texUnit
->_BoundTextures
|= (1 << targetIndex
);
1673 ctx
->NewState
|= _NEW_TEXTURE
;
1675 /* Pass the BindTexture call to the device driver */
1676 if (ctx
->Driver
.BindTexture
)
1677 ctx
->Driver
.BindTexture(ctx
, first
+ i
,
1678 texObj
->Target
, texObj
);
1681 /* The ARB_multi_bind spec says:
1683 * "An INVALID_OPERATION error is generated if any value
1684 * in <textures> is not zero or the name of an existing
1685 * texture object (per binding)."
1687 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1688 "glBindTextures(textures[%d]=%u is not zero "
1689 "or the name of an existing texture object)",
1693 unbind_textures_from_unit(ctx
, first
+ i
);
1697 _mesa_end_texture_lookups(ctx
);
1699 /* Unbind all textures in the range <first> through <first>+<count>-1 */
1700 for (i
= 0; i
< count
; i
++)
1701 unbind_textures_from_unit(ctx
, first
+ i
);
1707 * Set texture priorities.
1709 * \param n number of textures.
1710 * \param texName texture names.
1711 * \param priorities corresponding texture priorities.
1713 * \sa glPrioritizeTextures().
1715 * Looks up each texture in the hash, clamps the corresponding priority between
1716 * 0.0 and 1.0, and calls dd_function_table::PrioritizeTexture.
1719 _mesa_PrioritizeTextures( GLsizei n
, const GLuint
*texName
,
1720 const GLclampf
*priorities
)
1722 GET_CURRENT_CONTEXT(ctx
);
1725 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1726 _mesa_debug(ctx
, "glPrioritizeTextures %d\n", n
);
1728 FLUSH_VERTICES(ctx
, 0);
1731 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPrioritizeTextures" );
1738 for (i
= 0; i
< n
; i
++) {
1739 if (texName
[i
] > 0) {
1740 struct gl_texture_object
*t
= _mesa_lookup_texture(ctx
, texName
[i
]);
1742 t
->Priority
= CLAMP( priorities
[i
], 0.0F
, 1.0F
);
1747 ctx
->NewState
|= _NEW_TEXTURE
;
1753 * See if textures are loaded in texture memory.
1755 * \param n number of textures to query.
1756 * \param texName array with the texture names.
1757 * \param residences array which will hold the residence status.
1759 * \return GL_TRUE if all textures are resident and
1760 * residences is left unchanged,
1762 * Note: we assume all textures are always resident
1764 GLboolean GLAPIENTRY
1765 _mesa_AreTexturesResident(GLsizei n
, const GLuint
*texName
,
1766 GLboolean
*residences
)
1768 GET_CURRENT_CONTEXT(ctx
);
1769 GLboolean allResident
= GL_TRUE
;
1771 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1773 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1774 _mesa_debug(ctx
, "glAreTexturesResident %d\n", n
);
1777 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident(n)");
1781 if (!texName
|| !residences
)
1784 /* We only do error checking on the texture names */
1785 for (i
= 0; i
< n
; i
++) {
1786 struct gl_texture_object
*t
;
1787 if (texName
[i
] == 0) {
1788 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident");
1791 t
= _mesa_lookup_texture(ctx
, texName
[i
]);
1793 _mesa_error(ctx
, GL_INVALID_VALUE
, "glAreTexturesResident");
1803 * See if a name corresponds to a texture.
1805 * \param texture texture name.
1807 * \return GL_TRUE if texture name corresponds to a texture, or GL_FALSE
1810 * \sa glIsTexture().
1812 * Calls _mesa_HashLookup().
1814 GLboolean GLAPIENTRY
1815 _mesa_IsTexture( GLuint texture
)
1817 struct gl_texture_object
*t
;
1818 GET_CURRENT_CONTEXT(ctx
);
1819 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1821 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1822 _mesa_debug(ctx
, "glIsTexture %d\n", texture
);
1827 t
= _mesa_lookup_texture(ctx
, texture
);
1829 /* IsTexture is true only after object has been bound once. */
1830 return t
&& t
->Target
;
1835 * Simplest implementation of texture locking: grab the shared tex
1836 * mutex. Examine the shared context state timestamp and if there has
1837 * been a change, set the appropriate bits in ctx->NewState.
1839 * This is used to deal with synchronizing things when a texture object
1840 * is used/modified by different contexts (or threads) which are sharing
1843 * See also _mesa_lock/unlock_texture() in teximage.h
1846 _mesa_lock_context_textures( struct gl_context
*ctx
)
1848 mtx_lock(&ctx
->Shared
->TexMutex
);
1850 if (ctx
->Shared
->TextureStateStamp
!= ctx
->TextureStateTimestamp
) {
1851 ctx
->NewState
|= _NEW_TEXTURE
;
1852 ctx
->TextureStateTimestamp
= ctx
->Shared
->TextureStateStamp
;
1858 _mesa_unlock_context_textures( struct gl_context
*ctx
)
1860 assert(ctx
->Shared
->TextureStateStamp
== ctx
->TextureStateTimestamp
);
1861 mtx_unlock(&ctx
->Shared
->TexMutex
);
1866 _mesa_InvalidateTexSubImage(GLuint texture
, GLint level
, GLint xoffset
,
1867 GLint yoffset
, GLint zoffset
, GLsizei width
,
1868 GLsizei height
, GLsizei depth
)
1870 struct gl_texture_object
*t
;
1871 struct gl_texture_image
*image
;
1872 GET_CURRENT_CONTEXT(ctx
);
1874 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
1875 _mesa_debug(ctx
, "glInvalidateTexSubImage %d\n", texture
);
1877 t
= invalidate_tex_image_error_check(ctx
, texture
, level
,
1878 "glInvalidateTexSubImage");
1880 /* The GL_ARB_invalidate_subdata spec says:
1882 * "...the specified subregion must be between -<b> and <dim>+<b> where
1883 * <dim> is the size of the dimension of the texture image, and <b> is
1884 * the size of the border of that texture image, otherwise
1885 * INVALID_VALUE is generated (border is not applied to dimensions that
1886 * don't exist in a given texture target)."
1888 image
= t
->Image
[0][level
];
1897 /* The GL_ARB_invalidate_subdata spec says:
1899 * "For texture targets that don't have certain dimensions, this
1900 * command treats those dimensions as having a size of 1. For
1901 * example, to invalidate a portion of a two-dimensional texture,
1902 * the application would use <zoffset> equal to zero and <depth>
1905 switch (t
->Target
) {
1906 case GL_TEXTURE_BUFFER
:
1915 xBorder
= image
->Border
;
1918 imageWidth
= image
->Width
;
1922 case GL_TEXTURE_1D_ARRAY
:
1923 xBorder
= image
->Border
;
1926 imageWidth
= image
->Width
;
1927 imageHeight
= image
->Height
;
1931 case GL_TEXTURE_CUBE_MAP
:
1932 case GL_TEXTURE_RECTANGLE
:
1933 case GL_TEXTURE_2D_MULTISAMPLE
:
1934 xBorder
= image
->Border
;
1935 yBorder
= image
->Border
;
1937 imageWidth
= image
->Width
;
1938 imageHeight
= image
->Height
;
1941 case GL_TEXTURE_2D_ARRAY
:
1942 case GL_TEXTURE_CUBE_MAP_ARRAY
:
1943 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
1944 xBorder
= image
->Border
;
1945 yBorder
= image
->Border
;
1947 imageWidth
= image
->Width
;
1948 imageHeight
= image
->Height
;
1949 imageDepth
= image
->Depth
;
1952 xBorder
= image
->Border
;
1953 yBorder
= image
->Border
;
1954 zBorder
= image
->Border
;
1955 imageWidth
= image
->Width
;
1956 imageHeight
= image
->Height
;
1957 imageDepth
= image
->Depth
;
1960 assert(!"Should not get here.");
1970 if (xoffset
< -xBorder
) {
1971 _mesa_error(ctx
, GL_INVALID_VALUE
, "glInvalidateSubTexImage(xoffset)");
1975 if (xoffset
+ width
> imageWidth
+ xBorder
) {
1976 _mesa_error(ctx
, GL_INVALID_VALUE
,
1977 "glInvalidateSubTexImage(xoffset+width)");
1981 if (yoffset
< -yBorder
) {
1982 _mesa_error(ctx
, GL_INVALID_VALUE
, "glInvalidateSubTexImage(yoffset)");
1986 if (yoffset
+ height
> imageHeight
+ yBorder
) {
1987 _mesa_error(ctx
, GL_INVALID_VALUE
,
1988 "glInvalidateSubTexImage(yoffset+height)");
1992 if (zoffset
< -zBorder
) {
1993 _mesa_error(ctx
, GL_INVALID_VALUE
,
1994 "glInvalidateSubTexImage(zoffset)");
1998 if (zoffset
+ depth
> imageDepth
+ zBorder
) {
1999 _mesa_error(ctx
, GL_INVALID_VALUE
,
2000 "glInvalidateSubTexImage(zoffset+depth)");
2005 /* We don't actually do anything for this yet. Just return after
2006 * validating the parameters and generating the required errors.
2013 _mesa_InvalidateTexImage(GLuint texture
, GLint level
)
2015 GET_CURRENT_CONTEXT(ctx
);
2017 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
2018 _mesa_debug(ctx
, "glInvalidateTexImage(%d, %d)\n", texture
, level
);
2020 invalidate_tex_image_error_check(ctx
, texture
, level
,
2021 "glInvalidateTexImage");
2023 /* We don't actually do anything for this yet. Just return after
2024 * validating the parameters and generating the required errors.