intel_fbo.h

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

/**************************************************************************
 * 
 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
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 * copy of this software and associated documentation files (the
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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
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#ifndef INTEL_FBO_H
#define INTEL_FBO_H


struct intel_context;
struct intel_region;

/**
 * Intel framebuffer, derived from gl_framebuffer.
 */
struct intel_framebuffer
{
   struct gl_framebuffer Base;

   struct intel_renderbuffer *color_rb[3];

   /* Drawable page flipping state */
   GLboolean pf_active;
   GLuint pf_seq;
   GLint pf_planes;
   GLint pf_current_page;
   GLint pf_num_pages;

   /* VBI
    */
   GLuint vbl_waited;

   int64_t swap_ust;
   int64_t swap_missed_ust;

   GLuint swap_count;
   GLuint swap_missed_count;
};


/**
 * 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 */

   GLuint pf_pending;  /**< sequence number of pending flip */

   GLuint vbl_pending;   /**< vblank sequence number of pending flip */
};

extern struct intel_renderbuffer *intel_renderbuffer(struct gl_renderbuffer
                                                     *rb);

extern void
intel_renderbuffer_set_region(struct intel_renderbuffer *irb,
			      struct intel_region *region);

extern struct intel_renderbuffer *
intel_create_renderbuffer(GLenum intFormat);

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,
                                                         int attIndex);

extern void intel_flip_renderbuffers(struct intel_framebuffer *intel_fb);


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




#endif /* INTEL_FBO_H */