u_tile.h

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/**************************************************************************
 * 
 * Copyright 2007 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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 * 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
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#ifndef P_TILE_H
#define P_TILE_H

#include "pipe/p_compiler.h"

struct pipe_surface;


static INLINE boolean
pipe_clip_tile(uint x, uint y, uint *w, uint *h, const struct pipe_surface *ps)
{
   if (x >= ps->width)
      return TRUE;
   if (y >= ps->height)
      return TRUE;
   if (x + *w > ps->width)
      *w = ps->width - x;
   if (y + *h > ps->height)
      *h = ps->height - y;
   return FALSE;
}

#ifdef __cplusplus
extern "C" {
#endif

void
pipe_get_tile_raw(struct pipe_surface *ps,
                  uint x, uint y, uint w, uint h,
                  void *p, int dst_stride);

void
pipe_put_tile_raw(struct pipe_surface *ps,
                  uint x, uint y, uint w, uint h,
                  const void *p, int src_stride);


void
pipe_get_tile_rgba(struct pipe_surface *ps,
                   uint x, uint y, uint w, uint h,
                   float *p);

void
pipe_put_tile_rgba(struct pipe_surface *ps,
                   uint x, uint y, uint w, uint h,
                   const float *p);


void
pipe_get_tile_z(struct pipe_surface *ps,
                uint x, uint y, uint w, uint h,
                uint *z);

void
pipe_put_tile_z(struct pipe_surface *ps,
                uint x, uint y, uint w, uint h,
                const uint *z);

void
pipe_tile_raw_to_rgba(enum pipe_format format,
                      void *src,
                      uint w, uint h,
                      float *dst, unsigned dst_stride);


#ifdef __cplusplus
}
#endif

#endif

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