src/mesa/main/texobj.h

   1 /**
   2  * \file texobj.h
   3  * Texture object management.
   4  */
   5
   6 /*
   7  * Mesa 3-D graphics library
   8  *
   9  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  10  *
  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:
  17  *
  18  * The above copyright notice and this permission notice shall be included
  19  * in all copies or substantial portions of the Software.
  20  *
  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.
  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 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45
  46 /**
  47  * \name Internal functions
  48  */
  49 /*@{*/
  50
  51 extern struct gl_texture_object *
  52 _mesa_lookup_texture(struct gl_context *ctx, GLuint id);
  53
  54 extern struct gl_texture_object *
  55 _mesa_lookup_texture_err(struct gl_context *ctx, GLuint id, const char* func);
  56
  57 extern struct gl_texture_object *
  58 _mesa_lookup_texture_locked(struct gl_context *ctx, GLuint id);
  59
  60 extern struct gl_texture_object *
  61 _mesa_get_current_tex_object(struct gl_context *ctx, GLenum target);
  62
  63 extern struct gl_texture_object *
  64 _mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target );
  65
  66 extern void
  67 _mesa_initialize_texture_object( struct gl_context *ctx,
  68                                  struct gl_texture_object *obj,
  69                                  GLuint name, GLenum target );
  70
  71 extern int
  72 _mesa_tex_target_to_index(const struct gl_context *ctx, GLenum target);
  73
  74 extern void
  75 _mesa_delete_texture_object( struct gl_context *ctx,
  76                              struct gl_texture_object *obj );
  77
  78 extern void
  79 _mesa_copy_texture_object( struct gl_texture_object *dest,
  80                            const struct gl_texture_object *src );
  81
  82 extern void
  83 _mesa_clear_texture_object(struct gl_context *ctx,
  84                            struct gl_texture_object *obj);
  85
  86 extern void
  87 _mesa_reference_texobj_(struct gl_texture_object **ptr,
  88                         struct gl_texture_object *tex);
  89
  90 static inline void
  91 _mesa_reference_texobj(struct gl_texture_object **ptr,
  92                        struct gl_texture_object *tex)
  93 {
  94    if (*ptr != tex)
  95       _mesa_reference_texobj_(ptr, tex);
  96 }
  97
  98 /**
  99  * Lock a texture for updating.  See also _mesa_lock_context_textures().
 100  */
 101 static inline void
 102 _mesa_lock_texture(struct gl_context *ctx, struct gl_texture_object *texObj)
 103 {
 104    mtx_lock(&ctx->Shared->TexMutex);
 105    ctx->Shared->TextureStateStamp++;
 106    (void) texObj;
 107 }
 108
 109 static inline void
 110 _mesa_unlock_texture(struct gl_context *ctx, struct gl_texture_object *texObj)
 111 {
 112    (void) texObj;
 113    mtx_unlock(&ctx->Shared->TexMutex);
 114 }
 115
 116
 117 /** Is the texture "complete" with respect to the given sampler state? */
 118 static inline GLboolean
 119 _mesa_is_texture_complete(const struct gl_texture_object *texObj,
 120                           const struct gl_sampler_object *sampler)
 121 {
 122    /*
 123     * According to ARB_stencil_texturing, NEAREST_MIPMAP_NEAREST would
 124     * be forbidden, however it is allowed per GL 4.5 rules, allow it
 125     * even without GL 4.5 since it was a spec mistake.
 126     */
 127    if ((texObj->_IsIntegerFormat ||
 128         (texObj->StencilSampling &&
 129          texObj->Image[0][texObj->BaseLevel]->_BaseFormat == GL_DEPTH_STENCIL)) &&
 130        (sampler->MagFilter != GL_NEAREST ||
 131         (sampler->MinFilter != GL_NEAREST &&
 132          sampler->MinFilter != GL_NEAREST_MIPMAP_NEAREST))) {
 133       /* If the format is integer, only nearest filtering is allowed */
 134       return GL_FALSE;
 135    }
 136
 137    if (_mesa_is_mipmap_filter(sampler))
 138       return texObj->_MipmapComplete;
 139    else
 140       return texObj->_BaseComplete;
 141 }
 142
 143
 144 extern void
 145 _mesa_test_texobj_completeness( const struct gl_context *ctx,
 146                                 struct gl_texture_object *obj );
 147
 148 extern GLboolean
 149 _mesa_cube_level_complete(const struct gl_texture_object *texObj,
 150                           const GLint level);
 151
 152 extern GLboolean
 153 _mesa_cube_complete(const struct gl_texture_object *texObj);
 154
 155 extern void
 156 _mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj);
 157
 158 extern struct gl_texture_object *
 159 _mesa_get_fallback_texture(struct gl_context *ctx, gl_texture_index tex);
 160
 161 extern GLuint
 162 _mesa_total_texture_memory(struct gl_context *ctx);
 163
 164 extern GLenum
 165 _mesa_texture_base_format(const struct gl_texture_object *texObj);
 166
 167 extern void
 168 _mesa_unlock_context_textures( struct gl_context *ctx );
 169
 170 extern void
 171 _mesa_lock_context_textures( struct gl_context *ctx );
 172
 173 /*@}*/
 174
 175 /**
 176  * \name API functions
 177  */
 178 /*@{*/
 179
 180 void GLAPIENTRY
 181 _mesa_GenTextures_no_error(GLsizei n, GLuint *textures);
 182
 183 extern void GLAPIENTRY
 184 _mesa_GenTextures(GLsizei n, GLuint *textures);
 185
 186 void GLAPIENTRY
 187 _mesa_CreateTextures_no_error(GLenum target, GLsizei n, GLuint *textures);
 188
 189 extern void GLAPIENTRY
 190 _mesa_CreateTextures(GLenum target, GLsizei n, GLuint *textures);
 191
 192 extern void GLAPIENTRY
 193 _mesa_DeleteTextures( GLsizei n, const GLuint *textures );
 194
 195
 196 void GLAPIENTRY
 197 _mesa_BindTexture_no_error(GLenum target, GLuint texture);
 198
 199 extern void GLAPIENTRY
 200 _mesa_BindTexture( GLenum target, GLuint texture );
 201
 202 void GLAPIENTRY
 203 _mesa_BindTextureUnit_no_error(GLuint unit, GLuint texture);
 204
 205 extern void GLAPIENTRY
 206 _mesa_BindTextureUnit(GLuint unit, GLuint texture);
 207
 208 extern void GLAPIENTRY
 209 _mesa_BindTextures( GLuint first, GLsizei count, const GLuint *textures );
 210
 211
 212 extern void GLAPIENTRY
 213 _mesa_PrioritizeTextures( GLsizei n, const GLuint *textures,
 214                           const GLclampf *priorities );
 215
 216
 217 extern GLboolean GLAPIENTRY
 218 _mesa_AreTexturesResident( GLsizei n, const GLuint *textures,
 219                            GLboolean *residences );
 220
 221 extern GLboolean GLAPIENTRY
 222 _mesa_IsTexture( GLuint texture );
 223
 224 void GLAPIENTRY
 225 _mesa_InvalidateTexSubImage_no_error(GLuint texture, GLint level, GLint xoffset,
 226                                      GLint yoffset, GLint zoffset,
 227                                      GLsizei width, GLsizei height,
 228                                      GLsizei depth);
 229
 230 extern void GLAPIENTRY
 231 _mesa_InvalidateTexSubImage(GLuint texture, GLint level, GLint xoffset,
 232                             GLint yoffset, GLint zoffset, GLsizei width,
 233                             GLsizei height, GLsizei depth);
 234 void GLAPIENTRY
 235 _mesa_InvalidateTexImage_no_error(GLuint texture, GLint level);
 236
 237 extern void GLAPIENTRY
 238 _mesa_InvalidateTexImage(GLuint texture, GLint level);
 239
 240 /*@}*/
 241
 242
 243 #ifdef __cplusplus
 244 }
 245 #endif
 246
 247
 248 #endif