intel_tex_obj.h

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

/**************************************************************************
 * 
 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
 * 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
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 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) 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
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#ifndef _INTEL_TEX_OBJ_H
#define _INTEL_TEX_OBJ_H

struct intel_texture_object
{
   struct gl_texture_object base;       /* The "parent" object */

   /* The mipmap tree must include at least these levels once
    * validated:
    */
   GLuint firstLevel;
   GLuint lastLevel;

   /* Offset for firstLevel image:
    */
   GLuint textureOffset;

   /* On validation any active images held in main memory or in other
    * regions will be copied to this region and the old storage freed.
    */
   struct intel_mipmap_tree *mt;

   GLboolean imageOverride;
   GLint depthOverride;
   GLuint pitchOverride;
};

struct intel_texture_image
{
   struct gl_texture_image base;

   /* These aren't stored in gl_texture_image 
    */
   GLuint level;
   GLuint face;

   /* If intelImage->mt != NULL, image data is stored here.
    * Else if intelImage->base.Data != NULL, image is stored there.
    * Else there is no image data.
    */
   struct intel_mipmap_tree *mt;
};

static INLINE struct intel_texture_object *
intel_texture_object(struct gl_texture_object *obj)
{
   return (struct intel_texture_object *) obj;
}

static INLINE struct intel_texture_image *
intel_texture_image(struct gl_texture_image *img)
{
   return (struct intel_texture_image *) img;
}

#endif /* _INTEL_TEX_OBJ_H */