src/mesa/main/texstate.h

   1 /**
   2  * \file texstate.h
   3  * Texture state management.
   4  */
   5
   6 /*
   7  * Mesa 3-D graphics library
   8  * Version:  7.1
   9  *
  10  * Copyright (C) 1999-2007  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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  26  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  27  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  28  * OTHER DEALINGS IN THE SOFTWARE.
  29  */
  30
  31
  32 #ifndef TEXSTATE_H
  33 #define TEXSTATE_H
  34
  35
  36 #include "compiler.h"
  37 #include "mtypes.h"
  38
  39
  40 /**
  41  * Return pointer to current texture unit.
  42  * This the texture unit set by glActiveTexture(), not glClientActiveTexture().
  43  */
  44 static inline struct gl_texture_unit *
  45 _mesa_get_current_tex_unit(struct gl_context *ctx)
  46 {
  47    ASSERT(ctx->Texture.CurrentUnit < Elements(ctx->Texture.Unit));
  48    return &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
  49 }
  50
  51
  52 extern void
  53 _mesa_copy_texture_state( const struct gl_context *src, struct gl_context *dst );
  54
  55 extern void
  56 _mesa_print_texunit_state( struct gl_context *ctx, GLuint unit );
  57
  58
  59
  60 /**
  61  * \name Called from API
  62  */
  63 /*@{*/
  64
  65 extern void GLAPIENTRY
  66 _mesa_ActiveTexture( GLenum target );
  67
  68 extern void GLAPIENTRY
  69 _mesa_ClientActiveTexture( GLenum target );
  70
  71 /*@}*/
  72
  73
  74 /**
  75  * \name Initialization, state maintenance
  76  */
  77 /*@{*/
  78
  79 extern void
  80 _mesa_update_texture( struct gl_context *ctx, GLuint new_state );
  81
  82 extern GLboolean
  83 _mesa_init_texture( struct gl_context *ctx );
  84
  85 extern void
  86 _mesa_free_texture_data( struct gl_context *ctx );
  87
  88 extern void
  89 _mesa_update_default_objects_texture(struct gl_context *ctx);
  90
  91 /*@}*/
  92
  93 #endif