src/mesa/main/texobj.h

   1 /**
   2  * \file texobj.h
   3  * Texture object management.
   4  */
   5
   6 /*
   7  * Mesa 3-D graphics library
   8  * Version:  6.5
   9  *
  10  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a
  13  * copy of this software and associated documentation files (the "Software"),
  14  * to deal in the Software without restriction, including without limitation
  15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  16  * and/or sell copies of the Software, and to permit persons to whom the
  17  * Software is furnished to do so, subject to the following conditions:
  18  *
  19  * The above copyright notice and this permission notice shall be included
  20  * in all copies or substantial portions of the Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  23  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  25  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  26  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  27  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28  */
  29
  30
  31 #ifndef TEXTOBJ_H
  32 #define TEXTOBJ_H
  33
  34
  35 #include "compiler.h"
  36 #include "glheader.h"
  37 #include "mtypes.h"
  38 #include "samplerobj.h"
  39
  40
  41 /**
  42  * \name Internal functions
  43  */
  44 /*@{*/
  45
  46 extern struct gl_texture_object *
  47 _mesa_lookup_texture(struct gl_context *ctx, GLuint id);
  48
  49 extern struct gl_texture_object *
  50 _mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target );
  51
  52 extern void
  53 _mesa_initialize_texture_object( struct gl_texture_object *obj,
  54                                  GLuint name, GLenum target );
  55
  56 extern void
  57 _mesa_delete_texture_object( struct gl_context *ctx,
  58                              struct gl_texture_object *obj );
  59
  60 extern void
  61 _mesa_copy_texture_object( struct gl_texture_object *dest,
  62                            const struct gl_texture_object *src );
  63
  64 extern void
  65 _mesa_clear_texture_object(struct gl_context *ctx,
  66                            struct gl_texture_object *obj);
  67
  68 extern void
  69 _mesa_reference_texobj_(struct gl_texture_object **ptr,
  70                         struct gl_texture_object *tex);
  71
  72 static inline void
  73 _mesa_reference_texobj(struct gl_texture_object **ptr,
  74                        struct gl_texture_object *tex)
  75 {
  76    if (*ptr != tex)
  77       _mesa_reference_texobj_(ptr, tex);
  78 }
  79
  80
  81 /** Is the texture "complete" with respect to the given sampler state? */
  82 static inline GLboolean
  83 _mesa_is_texture_complete(const struct gl_texture_object *texObj,
  84                           const struct gl_sampler_object *sampler)
  85 {
  86    if (texObj->_IsIntegerFormat &&
  87        (sampler->MagFilter != GL_NEAREST ||
  88         (sampler->MinFilter != GL_NEAREST &&
  89          sampler->MinFilter != GL_NEAREST_MIPMAP_NEAREST))) {
  90       /* If the format is integer, only nearest filtering is allowed */
  91       return GL_FALSE;
  92    }
  93
  94    if (_mesa_is_mipmap_filter(sampler))
  95       return texObj->_MipmapComplete;
  96    else
  97       return texObj->_BaseComplete;
  98 }
  99
 100
 101 extern void
 102 _mesa_test_texobj_completeness( const struct gl_context *ctx,
 103                                 struct gl_texture_object *obj );
 104
 105 extern GLboolean
 106 _mesa_cube_complete(const struct gl_texture_object *texObj);
 107
 108 extern void
 109 _mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj,
 110                    GLboolean invalidate_state);
 111
 112 extern struct gl_texture_object *
 113 _mesa_get_fallback_texture(struct gl_context *ctx, gl_texture_index tex);
 114
 115 extern GLuint
 116 _mesa_total_texture_memory(struct gl_context *ctx);
 117
 118 extern void
 119 _mesa_unlock_context_textures( struct gl_context *ctx );
 120
 121 extern void
 122 _mesa_lock_context_textures( struct gl_context *ctx );
 123
 124 /*@}*/
 125
 126 /**
 127  * \name API functions
 128  */
 129 /*@{*/
 130
 131 extern void GLAPIENTRY
 132 _mesa_GenTextures( GLsizei n, GLuint *textures );
 133
 134
 135 extern void GLAPIENTRY
 136 _mesa_DeleteTextures( GLsizei n, const GLuint *textures );
 137
 138
 139 extern void GLAPIENTRY
 140 _mesa_BindTexture( GLenum target, GLuint texture );
 141
 142
 143 extern void GLAPIENTRY
 144 _mesa_PrioritizeTextures( GLsizei n, const GLuint *textures,
 145                           const GLclampf *priorities );
 146
 147
 148 extern GLboolean GLAPIENTRY
 149 _mesa_AreTexturesResident( GLsizei n, const GLuint *textures,
 150                            GLboolean *residences );
 151
 152 extern GLboolean GLAPIENTRY
 153 _mesa_IsTexture( GLuint texture );
 154
 155 extern void GLAPIENTRY
 156 _mesa_InvalidateTexSubImage(GLuint texture, GLint level, GLint xoffset,
 157                             GLint yoffset, GLint zoffset, GLsizei width,
 158                             GLsizei height, GLsizei depth);
 159
 160 extern void GLAPIENTRY
 161 _mesa_InvalidateTexImage(GLuint texture, GLint level);
 162
 163 /*@}*/
 164
 165
 166 #endif