| /** |
| * \file texstate.h |
| * Texture state management. |
| */ |
| |
| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| #ifndef TEXSTATE_H |
| #define TEXSTATE_H |
| |
| |
| #include "compiler.h" |
| #include "enums.h" |
| #include "macros.h" |
| #include "mtypes.h" |
| |
| |
| static inline struct gl_texture_unit * |
| _mesa_get_tex_unit(struct gl_context *ctx, GLuint unit) |
| { |
| assert(unit < ARRAY_SIZE(ctx->Texture.Unit)); |
| return &(ctx->Texture.Unit[unit]); |
| } |
| |
| /** |
| * Return pointer to current texture unit. |
| * This the texture unit set by glActiveTexture(), not glClientActiveTexture(). |
| */ |
| static inline struct gl_texture_unit * |
| _mesa_get_current_tex_unit(struct gl_context *ctx) |
| { |
| return _mesa_get_tex_unit(ctx, ctx->Texture.CurrentUnit); |
| } |
| |
| static inline GLuint |
| _mesa_max_tex_unit(struct gl_context *ctx) |
| { |
| /* See OpenGL spec for glActiveTexture: */ |
| return MAX2(ctx->Const.MaxCombinedTextureImageUnits, |
| ctx->Const.MaxTextureCoordUnits); |
| } |
| |
| |
| extern void |
| _mesa_copy_texture_state( const struct gl_context *src, struct gl_context *dst ); |
| |
| extern void |
| _mesa_print_texunit_state( struct gl_context *ctx, GLuint unit ); |
| |
| |
| |
| /** |
| * \name Called from API |
| */ |
| /*@{*/ |
| |
| extern void GLAPIENTRY |
| _mesa_ActiveTexture( GLenum target ); |
| |
| extern void GLAPIENTRY |
| _mesa_ClientActiveTexture( GLenum target ); |
| |
| /*@}*/ |
| |
| |
| /** |
| * \name Initialization, state maintenance |
| */ |
| /*@{*/ |
| |
| extern void |
| _mesa_update_texture( struct gl_context *ctx, GLuint new_state ); |
| |
| extern GLboolean |
| _mesa_init_texture( struct gl_context *ctx ); |
| |
| extern void |
| _mesa_free_texture_data( struct gl_context *ctx ); |
| |
| extern void |
| _mesa_update_default_objects_texture(struct gl_context *ctx); |
| |
| /*@}*/ |
| |
| #endif |