src/gallium/drivers/cell/ppu/cell_surface.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  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.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "pipe/p_defines.h"
  29 #include "pipe/p_inlines.h"
  30 #include "pipe/p_winsys.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_rect.h"
  33 #include "util/u_tile.h"
  34
  35 #include "cell_context.h"
  36 #include "cell_surface.h"
  37
  38
  39 static void
  40 cell_surface_copy(struct pipe_context *pipe,
  41                   boolean do_flip,
  42                   struct pipe_surface *dst,
  43                   unsigned dstx, unsigned dsty,
  44                   struct pipe_surface *src,
  45                   unsigned srcx, unsigned srcy,
  46                   unsigned width, unsigned height)
  47 {
  48    assert( dst->cpp == src->cpp );
  49
  50    pipe_copy_rect(pipe_surface_map(dst, PIPE_BUFFER_USAGE_CPU_WRITE),
  51                   &dst->block,
  52                   dst->stride,
  53                   dstx, dsty,
  54                   width, height,
  55                   pipe_surface_map(src, PIPE_BUFFER_USAGE_CPU_READ),
  56                   do_flip ? -src->stride : src->stride,
  57                   srcx, do_flip ? height - 1 - srcy : srcy);
  58
  59    pipe_surface_unmap(src);
  60    pipe_surface_unmap(dst);
  61 }
  62
  63
  64 static void *
  65 get_pointer(struct pipe_surface *dst, void *dst_map, unsigned x, unsigned y)
  66 {
  67    return (char *)dst_map + y / dst->block.height * dst->stride + x / dst->block.width * dst->block.size;
  68 }
  69
  70
  71 #define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
  72
  73
  74 /**
  75  * Fill a rectangular sub-region.  Need better logic about when to
  76  * push buffers into AGP - will currently do so whenever possible.
  77  */
  78 static void
  79 cell_surface_fill(struct pipe_context *pipe,
  80                   struct pipe_surface *dst,
  81                   unsigned dstx, unsigned dsty,
  82                   unsigned width, unsigned height, unsigned value)
  83 {
  84    unsigned i, j;
  85    void *dst_map = pipe_surface_map(dst, PIPE_BUFFER_USAGE_CPU_WRITE);
  86
  87    assert(dst->stride > 0);
  88
  89    switch (dst->block.size) {
  90    case 1:
  91    case 2:
  92    case 4:
  93       pipe_fill_rect(dst_map, &dst->block, dst->stride, dstx, dsty, width, height, value);
  94       break;
  95    case 8:
  96       {
  97          /* expand the 4-byte clear value to an 8-byte value */
  98          ushort *row = (ushort *) get_pointer(dst, dst_map, dstx, dsty);
  99          ushort val0 = UBYTE_TO_USHORT((value >>  0) & 0xff);
 100          ushort val1 = UBYTE_TO_USHORT((value >>  8) & 0xff);
 101          ushort val2 = UBYTE_TO_USHORT((value >> 16) & 0xff);
 102          ushort val3 = UBYTE_TO_USHORT((value >> 24) & 0xff);
 103          val0 = (val0 << 8) | val0;
 104          val1 = (val1 << 8) | val1;
 105          val2 = (val2 << 8) | val2;
 106          val3 = (val3 << 8) | val3;
 107          for (i = 0; i < height; i++) {
 108             for (j = 0; j < width; j++) {
 109                row[j*4+0] = val0;
 110                row[j*4+1] = val1;
 111                row[j*4+2] = val2;
 112                row[j*4+3] = val3;
 113             }
 114             row += dst->stride/2;
 115          }
 116       }
 117       break;
 118    default:
 119       assert(0);
 120       break;
 121    }
 122
 123    pipe_surface_unmap( dst );
 124 }
 125
 126
 127 void
 128 cell_init_surface_functions(struct cell_context *cell)
 129 {
 130    cell->pipe.surface_copy = cell_surface_copy;
 131    cell->pipe.surface_fill = cell_surface_fill;
 132 }