c2e130f820
We've been using a mix of these two macros for a while now. Let's just use the later everywhere. It seems to be the convention used by other open-source projects. Acked-by: Ilia Mirkin <imirkin@alum.mit.edu>
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/**
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* \file texstate.h
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* Texture state management.
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*/
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/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef TEXSTATE_H
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#define TEXSTATE_H
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#include "compiler.h"
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#include "enums.h"
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#include "macros.h"
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#include "mtypes.h"
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static inline struct gl_texture_unit *
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_mesa_get_tex_unit(struct gl_context *ctx, GLuint unit)
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{
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assert(unit < ARRAY_SIZE(ctx->Texture.Unit));
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return &(ctx->Texture.Unit[unit]);
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}
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/**
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* Return pointer to current texture unit.
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* This the texture unit set by glActiveTexture(), not glClientActiveTexture().
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*/
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static inline struct gl_texture_unit *
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_mesa_get_current_tex_unit(struct gl_context *ctx)
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{
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return _mesa_get_tex_unit(ctx, ctx->Texture.CurrentUnit);
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}
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static inline GLuint
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_mesa_max_tex_unit(struct gl_context *ctx)
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{
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/* See OpenGL spec for glActiveTexture: */
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return MAX2(ctx->Const.MaxCombinedTextureImageUnits,
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ctx->Const.MaxTextureCoordUnits);
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}
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static inline struct gl_texture_unit *
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_mesa_get_tex_unit_err(struct gl_context *ctx, GLuint unit, const char *func)
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{
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if (unit < _mesa_max_tex_unit(ctx))
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return _mesa_get_tex_unit(ctx, unit);
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/* Note: This error is a precedent set by glBindTextures. From the GL 4.5
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* specification (30.10.2014) Section 8.1 ("Texture Objects"):
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*
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* "An INVALID_OPERATION error is generated if first + count is greater
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* than the number of texture image units supported by the
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* implementation."
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*/
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_mesa_error(ctx, GL_INVALID_OPERATION, "%s(unit=%s)", func,
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_mesa_lookup_enum_by_nr(GL_TEXTURE0+unit));
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return NULL;
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}
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extern void
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_mesa_copy_texture_state( const struct gl_context *src, struct gl_context *dst );
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extern void
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_mesa_print_texunit_state( struct gl_context *ctx, GLuint unit );
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/**
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* \name Called from API
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*/
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/*@{*/
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extern void GLAPIENTRY
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_mesa_ActiveTexture( GLenum target );
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extern void GLAPIENTRY
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_mesa_ClientActiveTexture( GLenum target );
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/*@}*/
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/**
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* \name Initialization, state maintenance
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*/
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/*@{*/
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extern void
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_mesa_update_texture( struct gl_context *ctx, GLuint new_state );
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extern GLboolean
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_mesa_init_texture( struct gl_context *ctx );
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extern void
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_mesa_free_texture_data( struct gl_context *ctx );
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extern void
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_mesa_update_default_objects_texture(struct gl_context *ctx);
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/*@}*/
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#endif
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