src/gallium/drivers/llvmpipe/lp_tile_soa.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
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   9  * without limitation the rights to use, copy, modify, merge, publish,
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
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  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  26  **************************************************************************/
  27
  28 #ifndef LP_TILE_SOA_H
  29 #define LP_TILE_SOA_H
  30
  31 #include "pipe/p_compiler.h"
  32 #include "tgsi/tgsi_exec.h" /* for NUM_CHANNELS */
  33 #include "lp_tile_size.h"
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39
  40 struct pipe_transfer;
  41
  42
  43 #define TILE_VECTOR_HEIGHT 4
  44 #define TILE_VECTOR_WIDTH 4
  45
  46 extern const unsigned char
  47 tile_offset[TILE_VECTOR_HEIGHT][TILE_VECTOR_WIDTH];
  48
  49 #define TILE_C_STRIDE (TILE_VECTOR_HEIGHT * TILE_VECTOR_WIDTH) //16
  50 #define TILE_X_STRIDE (NUM_CHANNELS * TILE_C_STRIDE) //64
  51 #define TILE_Y_STRIDE (TILE_VECTOR_HEIGHT * TILE_SIZE * NUM_CHANNELS) //1024
  52
  53
  54 extern int tile_write_count, tile_read_count;
  55
  56
  57 /**
  58  * Return offset of the given pixel (and color channel) from the start
  59  * of a tile, in bytes.
  60  */
  61 static INLINE unsigned
  62 tile_pixel_offset(unsigned x, unsigned y, unsigned c)
  63 {
  64    unsigned ix = (x / TILE_VECTOR_WIDTH) * TILE_X_STRIDE;
  65    unsigned iy = (y / TILE_VECTOR_HEIGHT) * TILE_Y_STRIDE;
  66    unsigned offset = iy + ix + c * TILE_C_STRIDE +
  67       tile_offset[y % TILE_VECTOR_HEIGHT][x % TILE_VECTOR_WIDTH];
  68    return offset;
  69 }
  70
  71
  72 #define TILE_PIXEL(_p, _x, _y, _c)   ((_p)[tile_pixel_offset(_x, _y, _c)])
  73
  74
  75 void
  76 lp_tile_read_4ub(enum pipe_format format,
  77                  uint8_t *dst,
  78                  const void *src, unsigned src_stride,
  79                  unsigned x, unsigned y, unsigned w, unsigned h);
  80
  81
  82 void
  83 lp_tile_write_4ub(enum pipe_format format,
  84                   const uint8_t *src,
  85                   void *dst, unsigned dst_stride,
  86                   unsigned x, unsigned y, unsigned w, unsigned h);
  87
  88
  89
  90 #ifdef __cplusplus
  91 }
  92 #endif
  93
  94 #endif