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  * 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 TEXSTATE_H
  32 #define TEXSTATE_H
  33
  34
  35 #include "mtypes.h"
  36
  37
  38 /**
  39  * Return pointer to current texture unit.
  40  * This the texture unit set by glActiveTexture(), not glClientActiveTexture().
  41  */
  42 static INLINE struct gl_texture_unit *
  43 _mesa_get_current_tex_unit(GLcontext *ctx)
  44 {
  45    ASSERT(ctx->Texture.CurrentUnit < Elements(ctx->Texture.Unit));
  46    return &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
  47 }
  48
  49
  50 extern void
  51 _mesa_copy_texture_state( const GLcontext *src, GLcontext *dst );
  52
  53 extern void
  54 _mesa_print_texunit_state( GLcontext *ctx, GLuint unit );
  55
  56
  57
  58 /**
  59  * \name Called from API
  60  */
  61 /*@{*/
  62
  63 extern void GLAPIENTRY
  64 _mesa_ActiveTextureARB( GLenum target );
  65
  66 extern void GLAPIENTRY
  67 _mesa_ClientActiveTextureARB( GLenum target );
  68
  69 /*@}*/
  70
  71
  72 /**
  73  * \name Initialization, state maintenance
  74  */
  75 /*@{*/
  76
  77 extern void
  78 _mesa_update_texture( GLcontext *ctx, GLuint new_state );
  79
  80 extern GLboolean
  81 _mesa_init_texture( GLcontext *ctx );
  82
  83 extern void
  84 _mesa_free_texture_data( GLcontext *ctx );
  85
  86 extern void
  87 _mesa_update_default_objects_texture(GLcontext *ctx);
  88
  89 /*@}*/
  90
  91 #endif