3 * Texture object management.
7 * Mesa 3-D graphics library
9 * Copyright (C) 1999-2006 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.
38 #include "samplerobj.h"
47 * \name Internal functions
51 extern struct gl_texture_object
*
52 _mesa_lookup_texture(struct gl_context
*ctx
, GLuint id
);
55 _mesa_begin_texture_lookups(struct gl_context
*ctx
);
58 _mesa_end_texture_lookups(struct gl_context
*ctx
);
60 extern struct gl_texture_object
*
61 _mesa_lookup_texture_locked(struct gl_context
*ctx
, GLuint id
);
63 extern struct gl_texture_object
*
64 _mesa_new_texture_object( struct gl_context
*ctx
, GLuint name
, GLenum target
);
67 _mesa_initialize_texture_object( struct gl_context
*ctx
,
68 struct gl_texture_object
*obj
,
69 GLuint name
, GLenum target
);
72 _mesa_tex_target_to_index(const struct gl_context
*ctx
, GLenum target
);
75 _mesa_delete_texture_object( struct gl_context
*ctx
,
76 struct gl_texture_object
*obj
);
79 _mesa_copy_texture_object( struct gl_texture_object
*dest
,
80 const struct gl_texture_object
*src
);
83 _mesa_clear_texture_object(struct gl_context
*ctx
,
84 struct gl_texture_object
*obj
);
87 _mesa_reference_texobj_(struct gl_texture_object
**ptr
,
88 struct gl_texture_object
*tex
);
91 _mesa_reference_texobj(struct gl_texture_object
**ptr
,
92 struct gl_texture_object
*tex
)
95 _mesa_reference_texobj_(ptr
, tex
);
100 * Return number of faces for a texture target. This will be 6 for
101 * cube maps (and cube map arrays) and 1 otherwise.
102 * NOTE: this function is not used for cube map arrays which operate
103 * more like 2D arrays than cube maps.
106 _mesa_num_tex_faces(GLenum target
)
109 case GL_TEXTURE_CUBE_MAP
:
110 case GL_PROXY_TEXTURE_CUBE_MAP
:
118 /** Is the texture "complete" with respect to the given sampler state? */
119 static inline GLboolean
120 _mesa_is_texture_complete(const struct gl_texture_object
*texObj
,
121 const struct gl_sampler_object
*sampler
)
123 if (texObj
->_IsIntegerFormat
&&
124 (sampler
->MagFilter
!= GL_NEAREST
||
125 (sampler
->MinFilter
!= GL_NEAREST
&&
126 sampler
->MinFilter
!= GL_NEAREST_MIPMAP_NEAREST
))) {
127 /* If the format is integer, only nearest filtering is allowed */
131 /* From the ARB_stencil_texturing specification:
132 * "Add a new bullet point for the conditions that cause the texture
133 * to not be complete:
135 * * The internal format of the texture is DEPTH_STENCIL, the
136 * DEPTH_STENCIL_TEXTURE_MODE for the texture is STENCIL_INDEX and either
137 * the magnification filter or the minification filter is not NEAREST."
139 if (texObj
->StencilSampling
&&
140 texObj
->Image
[0][texObj
->BaseLevel
]->_BaseFormat
== GL_DEPTH_STENCIL
&&
141 (sampler
->MagFilter
!= GL_NEAREST
|| sampler
->MinFilter
!= GL_NEAREST
)) {
145 if (_mesa_is_mipmap_filter(sampler
))
146 return texObj
->_MipmapComplete
;
148 return texObj
->_BaseComplete
;
153 _mesa_test_texobj_completeness( const struct gl_context
*ctx
,
154 struct gl_texture_object
*obj
);
157 _mesa_cube_complete(const struct gl_texture_object
*texObj
);
160 _mesa_dirty_texobj(struct gl_context
*ctx
, struct gl_texture_object
*texObj
);
162 extern struct gl_texture_object
*
163 _mesa_get_fallback_texture(struct gl_context
*ctx
, gl_texture_index tex
);
166 _mesa_total_texture_memory(struct gl_context
*ctx
);
169 _mesa_texture_base_format(const struct gl_texture_object
*texObj
);
172 _mesa_unlock_context_textures( struct gl_context
*ctx
);
175 _mesa_lock_context_textures( struct gl_context
*ctx
);
180 * \name API functions
184 extern void GLAPIENTRY
185 _mesa_GenTextures( GLsizei n
, GLuint
*textures
);
188 extern void GLAPIENTRY
189 _mesa_DeleteTextures( GLsizei n
, const GLuint
*textures
);
192 extern void GLAPIENTRY
193 _mesa_BindTexture( GLenum target
, GLuint texture
);
196 extern void GLAPIENTRY
197 _mesa_BindTextures( GLuint first
, GLsizei count
, const GLuint
*textures
);
200 extern void GLAPIENTRY
201 _mesa_PrioritizeTextures( GLsizei n
, const GLuint
*textures
,
202 const GLclampf
*priorities
);
205 extern GLboolean GLAPIENTRY
206 _mesa_AreTexturesResident( GLsizei n
, const GLuint
*textures
,
207 GLboolean
*residences
);
209 extern GLboolean GLAPIENTRY
210 _mesa_IsTexture( GLuint texture
);
212 extern void GLAPIENTRY
213 _mesa_InvalidateTexSubImage(GLuint texture
, GLint level
, GLint xoffset
,
214 GLint yoffset
, GLint zoffset
, GLsizei width
,
215 GLsizei height
, GLsizei depth
);
217 extern void GLAPIENTRY
218 _mesa_InvalidateTexImage(GLuint texture
, GLint level
);