src/gallium/auxiliary/util/p_tile.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  26  **************************************************************************/
  27
  28 #ifndef P_TILE_H
  29 #define P_TILE_H
  30
  31 #include "pipe/p_compiler.h"
  32
  33 struct pipe_context;
  34 struct pipe_surface;
  35
  36
  37 /**
  38  * Clip tile against surface dims.
  39  * \return TRUE if tile is totally clipped, FALSE otherwise
  40  */
  41 static INLINE boolean
  42 pipe_clip_tile(uint x, uint y, uint *w, uint *h, const struct pipe_surface *ps)
  43 {
  44    if (x >= ps->width)
  45       return TRUE;
  46    if (y >= ps->height)
  47       return TRUE;
  48    if (x + *w > ps->width)
  49       *w = ps->width - x;
  50    if (y + *h > ps->height)
  51       *h = ps->height - y;
  52    return FALSE;
  53 }
  54
  55
  56 extern void
  57 pipe_get_tile_raw(struct pipe_context *pipe,
  58                   struct pipe_surface *ps,
  59                   uint x, uint y, uint w, uint h,
  60                   void *p, int dst_stride);
  61
  62 extern void
  63 pipe_put_tile_raw(struct pipe_context *pipe,
  64                   struct pipe_surface *ps,
  65                   uint x, uint y, uint w, uint h,
  66                   const void *p, int src_stride);
  67
  68
  69 extern void
  70 pipe_get_tile_rgba(struct pipe_context *pipe,
  71                    struct pipe_surface *ps,
  72                    uint x, uint y, uint w, uint h,
  73                    float *p);
  74
  75 extern void
  76 pipe_put_tile_rgba(struct pipe_context *pipe,
  77                    struct pipe_surface *ps,
  78                    uint x, uint y, uint w, uint h,
  79                    const float *p);
  80
  81 #endif