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                            struct gl_texture_image *retainTexImage);
  86
  87 extern void
  88 _mesa_reference_texobj_(struct gl_texture_object **ptr,
  89                         struct gl_texture_object *tex);
  90
  91 static inline void
  92 _mesa_reference_texobj(struct gl_texture_object **ptr,
  93                        struct gl_texture_object *tex)
  94 {
  95    if (*ptr != tex)
  96       _mesa_reference_texobj_(ptr, tex);
  97 }
  98
  99 /**
 100  * Lock a texture for updating.  See also _mesa_lock_context_textures().
 101  */
 102 static inline void
 103 _mesa_lock_texture(struct gl_context *ctx, struct gl_texture_object *texObj)
 104 {
 105    mtx_lock(&ctx->Shared->TexMutex);
 106    ctx->Shared->TextureStateStamp++;
 107    (void) texObj;
 108 }
 109
 110 static inline void
 111 _mesa_unlock_texture(struct gl_context *ctx, struct gl_texture_object *texObj)
 112 {
 113    (void) texObj;
 114    mtx_unlock(&ctx->Shared->TexMutex);
 115 }
 116
 117
 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)
 122 {
 123    /*
 124     * According to ARB_stencil_texturing, NEAREST_MIPMAP_NEAREST would
 125     * be forbidden, however it is allowed per GL 4.5 rules, allow it
 126     * even without GL 4.5 since it was a spec mistake.
 127     */
 128    if ((texObj->_IsIntegerFormat ||
 129         (texObj->StencilSampling &&
 130          texObj->Image[0][texObj->BaseLevel]->_BaseFormat == GL_DEPTH_STENCIL)) &&
 131        (sampler->MagFilter != GL_NEAREST ||
 132         (sampler->MinFilter != GL_NEAREST &&
 133          sampler->MinFilter != GL_NEAREST_MIPMAP_NEAREST))) {
 134       /* If the format is integer, only nearest filtering is allowed */
 135       return GL_FALSE;
 136    }
 137
 138    if (_mesa_is_mipmap_filter(sampler))
 139       return texObj->_MipmapComplete;
 140    else
 141       return texObj->_BaseComplete;
 142 }
 143
 144
 145 extern void
 146 _mesa_test_texobj_completeness( const struct gl_context *ctx,
 147                                 struct gl_texture_object *obj );
 148
 149 extern GLboolean
 150 _mesa_cube_level_complete(const struct gl_texture_object *texObj,
 151                           const GLint level);
 152
 153 extern GLboolean
 154 _mesa_cube_complete(const struct gl_texture_object *texObj);
 155
 156 extern void
 157 _mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj);
 158
 159 extern struct gl_texture_object *
 160 _mesa_get_fallback_texture(struct gl_context *ctx, gl_texture_index tex);
 161
 162 extern GLuint
 163 _mesa_total_texture_memory(struct gl_context *ctx);
 164
 165 extern GLenum
 166 _mesa_texture_base_format(const struct gl_texture_object *texObj);
 167
 168 extern void
 169 _mesa_unlock_context_textures( struct gl_context *ctx );
 170
 171 extern void
 172 _mesa_lock_context_textures( struct gl_context *ctx );
 173
 174 /*@}*/
 175
 176 /**
 177  * \name API functions
 178  */
 179 /*@{*/
 180
 181 void GLAPIENTRY
 182 _mesa_GenTextures_no_error(GLsizei n, GLuint *textures);
 183
 184 extern void GLAPIENTRY
 185 _mesa_GenTextures(GLsizei n, GLuint *textures);
 186
 187 void GLAPIENTRY
 188 _mesa_CreateTextures_no_error(GLenum target, GLsizei n, GLuint *textures);
 189
 190 extern void GLAPIENTRY
 191 _mesa_CreateTextures(GLenum target, GLsizei n, GLuint *textures);
 192
 193 void GLAPIENTRY
 194 _mesa_DeleteTextures_no_error(GLsizei n, const GLuint *textures);
 195
 196 extern void GLAPIENTRY
 197 _mesa_DeleteTextures( GLsizei n, const GLuint *textures );
 198
 199
 200 void GLAPIENTRY
 201 _mesa_BindTexture_no_error(GLenum target, GLuint texture);
 202
 203 extern void GLAPIENTRY
 204 _mesa_BindTexture( GLenum target, GLuint texture );
 205
 206 void GLAPIENTRY
 207 _mesa_BindTextureUnit_no_error(GLuint unit, GLuint texture);
 208
 209 extern void GLAPIENTRY
 210 _mesa_BindTextureUnit(GLuint unit, GLuint texture);
 211
 212 void GLAPIENTRY
 213 _mesa_BindTextures_no_error(GLuint first, GLsizei count,
 214                             const GLuint *textures);
 215
 216 extern void GLAPIENTRY
 217 _mesa_BindTextures( GLuint first, GLsizei count, const GLuint *textures );
 218
 219
 220 extern void GLAPIENTRY
 221 _mesa_PrioritizeTextures( GLsizei n, const GLuint *textures,
 222                           const GLclampf *priorities );
 223
 224
 225 extern GLboolean GLAPIENTRY
 226 _mesa_AreTexturesResident( GLsizei n, const GLuint *textures,
 227                            GLboolean *residences );
 228
 229 extern GLboolean GLAPIENTRY
 230 _mesa_IsTexture( GLuint texture );
 231
 232 void GLAPIENTRY
 233 _mesa_InvalidateTexSubImage_no_error(GLuint texture, GLint level, GLint xoffset,
 234                                      GLint yoffset, GLint zoffset,
 235                                      GLsizei width, GLsizei height,
 236                                      GLsizei depth);
 237
 238 extern void GLAPIENTRY
 239 _mesa_InvalidateTexSubImage(GLuint texture, GLint level, GLint xoffset,
 240                             GLint yoffset, GLint zoffset, GLsizei width,
 241                             GLsizei height, GLsizei depth);
 242 void GLAPIENTRY
 243 _mesa_InvalidateTexImage_no_error(GLuint texture, GLint level);
 244
 245 extern void GLAPIENTRY
 246 _mesa_InvalidateTexImage(GLuint texture, GLint level);
 247
 248 /*@}*/
 249
 250
 251 #ifdef __cplusplus
 252 }
 253 #endif
 254
 255
 256 #endif