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/**************************************************************************
*
* 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
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, 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 (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
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 _INTEL_TEX_OBJ_H
#define _INTEL_TEX_OBJ_H
#include "swrast/s_context.h"
struct intel_texture_object
{
struct gl_texture_object base;
/* This is a mirror of base._MaxLevel, updated at validate time,
* except that we don't bother with the non-base levels for
* non-mipmapped textures.
*/
unsigned int _MaxLevel;
/* 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;
};
/**
* intel_texture_image is a subclass of swrast_texture_image because we
* sometimes fall back to using the swrast module for software rendering.
*/
struct intel_texture_image
{
struct swrast_texture_image base;
/* 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;
GLboolean used_as_render_target;
/**
* \name Renderbuffers for faking packed depth/stencil
*
* These renderbuffers are non-null only if the intel_context is using
* separate stencil and this texture has a packed depth/stencil format. When
* glFramebufferTexture is called on this image, the resultant renderbuffer
* wrapper reuses these renderbuffers as its own.
*
* \see intel_wrap_texture
* \see intel_tex_image_s8z24_create_renderbuffers
* \see intel_tex_image_s8z24_scatter
* \see intel_tex_image_s8z24_gather
*
* \{
*/
/**
* The depth buffer has format X8_Z24. The x8 bits are undefined unless
* intel_tex_image_s8z24_gather has been immediately called. The depth buffer
* resuses the image miptree's region and hiz_region as its own.
*/
struct gl_renderbuffer *depth_rb;
/**
* The stencil buffer has format S8 and keeps its data in its own region.
*/
struct gl_renderbuffer *stencil_rb;
/** \} */
};
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 */
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