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+/**
+ * \file texstate.h
+ * Texture state management.
+ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.1
+ *
+ * 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
+ * BRIAN PAUL 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 "mtypes.h"
+
+
+/**
+ * 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(GLcontext *ctx)
+{
+ ASSERT(ctx->Texture.CurrentUnit < Elements(ctx->Texture.Unit));
+ return &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
+}
+
+
+extern void
+_mesa_copy_texture_state( const GLcontext *src, GLcontext *dst );
+
+extern void
+_mesa_print_texunit_state( GLcontext *ctx, GLuint unit );
+
+
+
+/**
+ * \name Called from API
+ */
+/*@{*/
+
+extern void GLAPIENTRY
+_mesa_ActiveTextureARB( GLenum target );
+
+extern void GLAPIENTRY
+_mesa_ClientActiveTextureARB( GLenum target );
+
+/*@}*/
+
+
+/**
+ * \name Initialization, state maintenance
+ */
+/*@{*/
+
+extern void
+_mesa_update_texture( GLcontext *ctx, GLuint new_state );
+
+extern GLboolean
+_mesa_init_texture( GLcontext *ctx );
+
+extern void
+_mesa_free_texture_data( GLcontext *ctx );
+
+extern void
+_mesa_update_default_objects_texture(GLcontext *ctx);
+
+/*@}*/
+
+#endif