3 * Mesa 3-D graphics library
6 * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
45 * Allocate a new texture object and add it to the linked list of texture
46 * objects. If name>0 then also insert the new texture object into the hash
48 * Input: shared - the shared GL state structure to contain the texture object
49 * name - integer name for the texture object
50 * dimensions - either 1, 2 or 3
51 * Return: pointer to new texture object
53 struct gl_texture_object
*
54 gl_alloc_texture_object( struct gl_shared_state
*shared
, GLuint name
,
57 struct gl_texture_object
*obj
;
59 ASSERT(dimensions
<= 3);
61 obj
= CALLOC_STRUCT(gl_texture_object
);
64 /* init the non-zero fields */
67 obj
->Dimensions
= dimensions
;
68 obj
->WrapS
= GL_REPEAT
;
69 obj
->WrapT
= GL_REPEAT
;
70 obj
->MinFilter
= GL_NEAREST_MIPMAP_LINEAR
;
71 obj
->MagFilter
= GL_LINEAR
;
72 obj
->MinLod
= -1000.0;
76 obj
->MinMagThresh
= 0.0F
;
77 _mesa_init_colortable(&obj
->Palette
);
79 /* insert into linked list */
81 _glthread_LOCK_MUTEX(shared
->Mutex
);
82 obj
->Next
= shared
->TexObjectList
;
83 shared
->TexObjectList
= obj
;
84 _glthread_UNLOCK_MUTEX(shared
->Mutex
);
88 /* insert into hash table */
89 _mesa_HashInsert(shared
->TexObjects
, name
, obj
);
97 * Deallocate a texture object struct and remove it from the given
99 * Input: shared - the shared GL state to which the object belongs
100 * t - the texture object to delete
102 void gl_free_texture_object( struct gl_shared_state
*shared
,
103 struct gl_texture_object
*t
)
105 struct gl_texture_object
*tprev
, *tcurr
;
109 /* Remove t from dirty list so we don't touch free'd memory later.
110 * Test for shared since Proxy texture aren't in global linked list.
113 gl_remove_texobj_from_dirty_list( shared
, t
);
115 /* unlink t from the linked list */
117 _glthread_LOCK_MUTEX(shared
->Mutex
);
119 tcurr
= shared
->TexObjectList
;
123 tprev
->Next
= t
->Next
;
126 shared
->TexObjectList
= t
->Next
;
133 _glthread_UNLOCK_MUTEX(shared
->Mutex
);
137 /* remove from hash table */
138 _mesa_HashRemove(shared
->TexObjects
, t
->Name
);
141 _mesa_free_colortable_data(&t
->Palette
);
143 /* free texture images */
146 for (i
=0;i
<MAX_TEXTURE_LEVELS
;i
++) {
148 _mesa_free_texture_image( t
->Image
[i
] );
152 /* free this object */
159 * Examine a texture object to determine if it is complete or not.
160 * The t->Complete flag will be set to GL_TRUE or GL_FALSE accordingly.
162 void gl_test_texture_object_completeness( const GLcontext
*ctx
, struct gl_texture_object
*t
)
164 t
->Complete
= GL_TRUE
; /* be optimistic */
166 /* Always need level zero image */
168 t
->Complete
= GL_FALSE
;
172 /* Compute number of mipmap levels */
173 if (t
->Dimensions
==1) {
174 t
->P
= t
->Image
[0]->WidthLog2
;
176 else if (t
->Dimensions
==2) {
177 t
->P
= MAX2(t
->Image
[0]->WidthLog2
, t
->Image
[0]->HeightLog2
);
179 else if (t
->Dimensions
==3) {
180 GLint max
= MAX2(t
->Image
[0]->WidthLog2
, t
->Image
[0]->HeightLog2
);
181 max
= MAX2(max
, (GLint
)(t
->Image
[0]->DepthLog2
));
185 /* Compute M (see the 1.2 spec) used during mipmapping */
186 t
->M
= (GLfloat
) (MIN2(t
->MaxLevel
, t
->P
) - t
->BaseLevel
);
189 if (t
->MinFilter
!=GL_NEAREST
&& t
->MinFilter
!=GL_LINEAR
) {
191 * Mipmapping: determine if we have a complete set of mipmaps
194 GLint minLevel
= t
->BaseLevel
;
195 GLint maxLevel
= MIN2(t
->P
, ctx
->Const
.MaxTextureLevels
-1);
196 maxLevel
= MIN2(maxLevel
, t
->MaxLevel
);
198 if (minLevel
> maxLevel
) {
199 t
->Complete
= GL_FALSE
;
203 /* Test dimension-independent attributes */
204 for (i
= minLevel
; i
<= maxLevel
; i
++) {
206 if (t
->Image
[i
]->Format
!= t
->Image
[0]->Format
) {
207 t
->Complete
= GL_FALSE
;
210 if (t
->Image
[i
]->Border
!= t
->Image
[0]->Border
) {
211 t
->Complete
= GL_FALSE
;
217 /* Test things which depend on number of texture image dimensions */
218 if (t
->Dimensions
==1) {
219 /* Test 1-D mipmaps */
220 GLuint width
= t
->Image
[0]->Width2
;
221 for (i
=1; i
<ctx
->Const
.MaxTextureLevels
; i
++) {
225 if (i
>= minLevel
&& i
<= maxLevel
) {
227 t
->Complete
= GL_FALSE
;
230 if (t
->Image
[i
]->Width2
!= width
) {
231 t
->Complete
= GL_FALSE
;
236 return; /* found smallest needed mipmap, all done! */
240 else if (t
->Dimensions
==2) {
241 /* Test 2-D mipmaps */
242 GLuint width
= t
->Image
[0]->Width2
;
243 GLuint height
= t
->Image
[0]->Height2
;
244 for (i
=1; i
<ctx
->Const
.MaxTextureLevels
; i
++) {
251 if (i
>= minLevel
&& i
<= maxLevel
) {
253 t
->Complete
= GL_FALSE
;
256 if (t
->Image
[i
]->Width2
!= width
) {
257 t
->Complete
= GL_FALSE
;
260 if (t
->Image
[i
]->Height2
!= height
) {
261 t
->Complete
= GL_FALSE
;
264 if (width
==1 && height
==1) {
265 return; /* found smallest needed mipmap, all done! */
270 else if (t
->Dimensions
==3) {
271 /* Test 3-D mipmaps */
272 GLuint width
= t
->Image
[0]->Width2
;
273 GLuint height
= t
->Image
[0]->Height2
;
274 GLuint depth
= t
->Image
[0]->Depth2
;
275 for (i
=1; i
<ctx
->Const
.MaxTextureLevels
; i
++) {
285 if (i
>= minLevel
&& i
<= maxLevel
) {
287 t
->Complete
= GL_FALSE
;
290 if (t
->Image
[i
]->Width2
!= width
) {
291 t
->Complete
= GL_FALSE
;
294 if (t
->Image
[i
]->Height2
!= height
) {
295 t
->Complete
= GL_FALSE
;
298 if (t
->Image
[i
]->Depth2
!= depth
) {
299 t
->Complete
= GL_FALSE
;
303 if (width
==1 && height
==1 && depth
==1) {
304 return; /* found smallest needed mipmap, all done! */
309 /* Dimensions = ??? */
310 gl_problem(NULL
, "Bug in gl_test_texture_object_completeness\n");
316 _glthread_DECLARE_STATIC_MUTEX(GenTexturesLock
);
320 * Execute glGenTextures
323 _mesa_GenTextures( GLsizei n
, GLuint
*texName
)
325 GET_CURRENT_CONTEXT(ctx
);
329 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glGenTextures");
331 gl_error( ctx
, GL_INVALID_VALUE
, "glGenTextures" );
337 * This must be atomic (generation and allocation of texture IDs)
339 _glthread_LOCK_MUTEX(GenTexturesLock
);
341 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->TexObjects
, n
);
343 /* Return the texture names */
345 texName
[i
] = first
+ i
;
348 /* Allocate new, empty texture objects */
350 GLuint name
= first
+ i
;
352 (void) gl_alloc_texture_object(ctx
->Shared
, name
, dims
);
355 _glthread_UNLOCK_MUTEX(GenTexturesLock
);
361 * Execute glDeleteTextures
364 _mesa_DeleteTextures( GLsizei n
, const GLuint
*texName
)
366 GET_CURRENT_CONTEXT(ctx
);
369 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glDeleteTextures");
372 struct gl_texture_object
*t
;
374 t
= (struct gl_texture_object
*)
375 _mesa_HashLookup(ctx
->Shared
->TexObjects
, texName
[i
]);
377 /* First check if this texture is currently bound.
378 * If so, unbind it and decrement the reference count.
381 for (u
= 0; u
< MAX_TEXTURE_UNITS
; u
++) {
382 struct gl_texture_unit
*unit
= &ctx
->Texture
.Unit
[u
];
384 for (d
= 1 ; d
<= 3 ; d
++) {
385 if (unit
->CurrentD
[d
] == t
) {
386 unit
->CurrentD
[d
] = ctx
->Shared
->DefaultD
[d
];
387 ctx
->Shared
->DefaultD
[d
]->RefCount
++;
389 ASSERT( t
->RefCount
>= 0 );
394 /* Decrement reference count and delete if zero */
396 ASSERT( t
->RefCount
>= 0 );
397 if (t
->RefCount
== 0) {
398 if (ctx
->Driver
.DeleteTexture
)
399 (*ctx
->Driver
.DeleteTexture
)( ctx
, t
);
400 gl_free_texture_object(ctx
->Shared
, t
);
410 * Execute glBindTexture
413 _mesa_BindTexture( GLenum target
, GLuint texName
)
415 GET_CURRENT_CONTEXT(ctx
);
416 GLuint unit
= ctx
->Texture
.CurrentUnit
;
417 struct gl_texture_unit
*texUnit
= &ctx
->Texture
.Unit
[unit
];
418 struct gl_texture_object
*oldTexObj
;
419 struct gl_texture_object
*newTexObj
;
422 if (MESA_VERBOSE
& (VERBOSE_API
|VERBOSE_TEXTURE
))
423 fprintf(stderr
, "glBindTexture %s %d\n",
424 gl_lookup_enum_by_nr(target
), (GLint
) texName
);
426 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glBindTexture");
439 gl_error( ctx
, GL_INVALID_ENUM
, "glBindTexture(target)" );
443 oldTexObj
= texUnit
->CurrentD
[dim
];
445 if (oldTexObj
->Name
== texName
)
449 newTexObj
= ctx
->Shared
->DefaultD
[dim
];
451 struct _mesa_HashTable
*hash
= ctx
->Shared
->TexObjects
;
452 newTexObj
= (struct gl_texture_object
*) _mesa_HashLookup(hash
, texName
);
455 newTexObj
= gl_alloc_texture_object(ctx
->Shared
, texName
, dim
);
457 if (newTexObj
->Dimensions
!= dim
) {
458 if (newTexObj
->Dimensions
) {
459 /* the named texture object's dimensions don't match the target */
460 gl_error( ctx
, GL_INVALID_OPERATION
, "glBindTexture" );
463 newTexObj
->Dimensions
= dim
;
467 newTexObj
->RefCount
++;
469 texUnit
->CurrentD
[dim
] = newTexObj
;
471 /* If we've changed the CurrentD[123] texture object then update the
472 * ctx->Texture.Current pointer to point to the new texture object.
474 texUnit
->Current
= texUnit
->CurrentD
[texUnit
->CurrentDimension
];
476 /* Check if we may have to use a new triangle rasterizer */
477 if ((ctx
->IndirectTriangles
& DD_SW_RASTERIZE
) &&
478 ( oldTexObj
->WrapS
!= newTexObj
->WrapS
479 || oldTexObj
->WrapT
!= newTexObj
->WrapT
480 || oldTexObj
->WrapR
!= newTexObj
->WrapR
481 || oldTexObj
->MinFilter
!= newTexObj
->MinFilter
482 || oldTexObj
->MagFilter
!= newTexObj
->MagFilter
483 || (oldTexObj
->Image
[0] && newTexObj
->Image
[0] &&
484 (oldTexObj
->Image
[0]->Format
!=newTexObj
->Image
[0]->Format
))))
486 ctx
->NewState
|= (NEW_RASTER_OPS
| NEW_TEXTURING
);
489 if (oldTexObj
->Complete
!= newTexObj
->Complete
)
490 ctx
->NewState
|= NEW_TEXTURING
;
492 /* Pass BindTexture call to device driver */
493 if (ctx
->Driver
.BindTexture
) {
494 (*ctx
->Driver
.BindTexture
)( ctx
, target
, newTexObj
);
497 if (oldTexObj
->Name
> 0) {
498 /* never delete default (id=0) texture objects */
499 oldTexObj
->RefCount
--;
500 if (oldTexObj
->RefCount
<= 0) {
501 if (ctx
->Driver
.DeleteTexture
) {
502 (*ctx
->Driver
.DeleteTexture
)( ctx
, oldTexObj
);
504 gl_free_texture_object(ctx
->Shared
, oldTexObj
);
512 * Execute glPrioritizeTextures
515 _mesa_PrioritizeTextures( GLsizei n
, const GLuint
*texName
,
516 const GLclampf
*priorities
)
518 GET_CURRENT_CONTEXT(ctx
);
521 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
, "glPrioritizeTextures");
523 gl_error( ctx
, GL_INVALID_VALUE
, "glPrioritizeTextures" );
528 struct gl_texture_object
*t
;
530 t
= (struct gl_texture_object
*)
531 _mesa_HashLookup(ctx
->Shared
->TexObjects
, texName
[i
]);
533 t
->Priority
= CLAMP( priorities
[i
], 0.0F
, 1.0F
);
535 if (ctx
->Driver
.PrioritizeTexture
)
536 ctx
->Driver
.PrioritizeTexture( ctx
, t
, t
->Priority
);
545 * Execute glAreTexturesResident
548 _mesa_AreTexturesResident( GLsizei n
, const GLuint
*texName
,
549 GLboolean
*residences
)
551 GET_CURRENT_CONTEXT(ctx
);
552 GLboolean resident
= GL_TRUE
;
555 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx
,
556 "glAreTexturesResident",
559 gl_error( ctx
, GL_INVALID_VALUE
, "glAreTexturesResident(n)" );
564 struct gl_texture_object
*t
;
566 gl_error( ctx
, GL_INVALID_VALUE
, "glAreTexturesResident(textures)" );
569 t
= (struct gl_texture_object
*)
570 _mesa_HashLookup(ctx
->Shared
->TexObjects
, texName
[i
]);
572 if (ctx
->Driver
.IsTextureResident
)
573 residences
[i
] = ctx
->Driver
.IsTextureResident( ctx
, t
);
575 residences
[i
] = GL_TRUE
;
578 gl_error( ctx
, GL_INVALID_VALUE
, "glAreTexturesResident(textures)" );
588 * Execute glIsTexture
591 _mesa_IsTexture( GLuint texture
)
593 GET_CURRENT_CONTEXT(ctx
);
594 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx
, "glIsTextures",
596 if (texture
>0 && _mesa_HashLookup(ctx
->Shared
->TexObjects
, texture
)) {