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 /**
  82  * Return number of faces for a texture target.  This will be 6 for
  83  * cube maps (and cube map arrays) and 1 otherwise.
  84  */
  85 static inline GLuint
  86 _mesa_num_tex_faces(GLenum target)
  87 {
  88    return target == GL_TEXTURE_CUBE_MAP ? 6 : 1;
  89 }
  90
  91
  92 /** Is the texture "complete" with respect to the given sampler state? */
  93 static inline GLboolean
  94 _mesa_is_texture_complete(const struct gl_texture_object *texObj,
  95                           const struct gl_sampler_object *sampler)
  96 {
  97    if (texObj->_IsIntegerFormat &&
  98        (sampler->MagFilter != GL_NEAREST ||
  99         (sampler->MinFilter != GL_NEAREST &&
 100          sampler->MinFilter != GL_NEAREST_MIPMAP_NEAREST))) {
 101       /* If the format is integer, only nearest filtering is allowed */
 102       return GL_FALSE;
 103    }
 104
 105    if (_mesa_is_mipmap_filter(sampler))
 106       return texObj->_MipmapComplete;
 107    else
 108       return texObj->_BaseComplete;
 109 }
 110
 111
 112 extern void
 113 _mesa_test_texobj_completeness( const struct gl_context *ctx,
 114                                 struct gl_texture_object *obj );
 115
 116 extern GLboolean
 117 _mesa_cube_complete(const struct gl_texture_object *texObj);
 118
 119 extern void
 120 _mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj,
 121                    GLboolean invalidate_state);
 122
 123 extern struct gl_texture_object *
 124 _mesa_get_fallback_texture(struct gl_context *ctx, gl_texture_index tex);
 125
 126 extern GLuint
 127 _mesa_total_texture_memory(struct gl_context *ctx);
 128
 129 extern void
 130 _mesa_unlock_context_textures( struct gl_context *ctx );
 131
 132 extern void
 133 _mesa_lock_context_textures( struct gl_context *ctx );
 134
 135 /*@}*/
 136
 137 /**
 138  * \name API functions
 139  */
 140 /*@{*/
 141
 142 extern void GLAPIENTRY
 143 _mesa_GenTextures( GLsizei n, GLuint *textures );
 144
 145
 146 extern void GLAPIENTRY
 147 _mesa_DeleteTextures( GLsizei n, const GLuint *textures );
 148
 149
 150 extern void GLAPIENTRY
 151 _mesa_BindTexture( GLenum target, GLuint texture );
 152
 153
 154 extern void GLAPIENTRY
 155 _mesa_PrioritizeTextures( GLsizei n, const GLuint *textures,
 156                           const GLclampf *priorities );
 157
 158
 159 extern GLboolean GLAPIENTRY
 160 _mesa_AreTexturesResident( GLsizei n, const GLuint *textures,
 161                            GLboolean *residences );
 162
 163 extern GLboolean GLAPIENTRY
 164 _mesa_IsTexture( GLuint texture );
 165
 166 extern void GLAPIENTRY
 167 _mesa_InvalidateTexSubImage(GLuint texture, GLint level, GLint xoffset,
 168                             GLint yoffset, GLint zoffset, GLsizei width,
 169                             GLsizei height, GLsizei depth);
 170
 171 extern void GLAPIENTRY
 172 _mesa_InvalidateTexImage(GLuint texture, GLint level);
 173
 174 /*@}*/
 175
 176
 177 #endif