intel_fbo.h

mesa-6.5-minigui源码

/**************************************************************************
 * 
 * Copyright 2006 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.
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 **************************************************************************/

#ifndef INTEL_FBO_H
#define INTEL_FBO_H


struct intel_context;
struct intel_region;


/**
 * Intel renderbuffer, derived from gl_renderbuffer.
 * Note: The PairedDepth and PairedStencil fields use renderbuffer IDs,
 * not pointers because in some circumstances a deleted renderbuffer could
 * result in a dangling pointer here.
 */
struct intel_renderbuffer {
   struct gl_renderbuffer Base;
   struct intel_region *region;
   void *pfMap;    /* possibly paged flipped map pointer */
   GLuint pfPitch; /* possibly paged flipped pitch */
   GLboolean RenderToTexture; /* RTT? */

   GLuint PairedDepth;   /**< only used if this is a depth renderbuffer */
   GLuint PairedStencil; /**< only used if this is a stencil renderbuffer */
};


extern struct intel_renderbuffer *
intel_create_renderbuffer(GLenum intFormat, GLsizei width, GLsizei height,
                          int offset, int pitch, int cpp, void *map);


extern void
intel_fbo_init( struct intel_context *intel );


/* XXX make inline or macro */
extern struct intel_renderbuffer *
intel_get_renderbuffer(struct gl_framebuffer *fb, GLuint attIndex);


/* XXX make inline or macro */
extern struct intel_region *
intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);




#endif /* INTEL_FBO_H */