src/gallium/drivers/i965simple/brw_surface.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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 "brw_blit.h"
  29 #include "brw_context.h"
  30 #include "brw_state.h"
  31 #include "pipe/p_defines.h"
  32 #include "pipe/p_util.h"
  33 #include "pipe/p_inlines.h"
  34 #include "pipe/p_winsys.h"
  35 #include "util/p_tile.h"
  36
  37
  38
  39 /* Assumes all values are within bounds -- no checking at this level -
  40  * do it higher up if required.
  41  */
  42 static void
  43 brw_surface_copy(struct pipe_context *pipe,
  44                  unsigned do_flip,
  45                  struct pipe_surface *dst,
  46                  unsigned dstx, unsigned dsty,
  47                  struct pipe_surface *src,
  48                  unsigned srcx, unsigned srcy, unsigned width, unsigned height)
  49 {
  50    assert(dst != src);
  51    assert(dst->cpp == src->cpp);
  52
  53    if (0) {
  54       void *dst_map = pipe->screen->surface_map( pipe->screen,
  55                                                  dst,
  56                                                  PIPE_BUFFER_USAGE_CPU_WRITE );
  57
  58       const void *src_map = pipe->screen->surface_map( pipe->screen,
  59                                                        src,
  60                                                        PIPE_BUFFER_USAGE_CPU_READ );
  61
  62       pipe_copy_rect(dst_map,
  63                      dst->cpp,
  64                      dst->pitch,
  65                      dstx, dsty,
  66                      width, height,
  67                      src_map,
  68                      do_flip ? -(int) src->pitch : src->pitch,
  69                      srcx, do_flip ? 1 - srcy - height : srcy);
  70
  71       pipe->screen->surface_unmap(pipe->screen, src);
  72       pipe->screen->surface_unmap(pipe->screen, dst);
  73    }
  74    else {
  75       brw_copy_blit(brw_context(pipe),
  76                     do_flip,
  77                     dst->cpp,
  78                     (short) src->pitch, src->buffer, src->offset, FALSE,
  79                     (short) dst->pitch, dst->buffer, dst->offset, FALSE,
  80                     (short) srcx, (short) srcy, (short) dstx, (short) dsty,
  81                     (short) width, (short) height, PIPE_LOGICOP_COPY);
  82    }
  83 }
  84
  85 /* Fill a rectangular sub-region.  Need better logic about when to
  86  * push buffers into AGP - will currently do so whenever possible.
  87  */
  88 static void *
  89 get_pointer(struct pipe_surface *dst, void *dst_map, unsigned x, unsigned y)
  90 {
  91    return (char *)dst_map + (y * dst->pitch + x) * dst->cpp;
  92 }
  93
  94
  95 static void
  96 brw_surface_fill(struct pipe_context *pipe,
  97                  struct pipe_surface *dst,
  98                  unsigned dstx, unsigned dsty,
  99                  unsigned width, unsigned height, unsigned value)
 100 {
 101    if (0) {
 102       unsigned i, j;
 103       void *dst_map = pipe->screen->surface_map( pipe->screen,
 104                                                  dst,
 105                                                  PIPE_BUFFER_USAGE_CPU_WRITE );
 106
 107
 108       switch (dst->cpp) {
 109       case 1: {
 110          ubyte *row = get_pointer(dst, dst_map, dstx, dsty);
 111          for (i = 0; i < height; i++) {
 112             memset(row, value, width);
 113             row += dst->pitch;
 114          }
 115       }
 116          break;
 117       case 2: {
 118          ushort *row = get_pointer(dst, dst_map, dstx, dsty);
 119          for (i = 0; i < height; i++) {
 120             for (j = 0; j < width; j++)
 121                row[j] = (ushort) value;
 122             row += dst->pitch;
 123          }
 124       }
 125          break;
 126       case 4: {
 127          unsigned *row = get_pointer(dst, dst_map, dstx, dsty);
 128          for (i = 0; i < height; i++) {
 129             for (j = 0; j < width; j++)
 130                row[j] = value;
 131             row += dst->pitch;
 132          }
 133       }
 134          break;
 135       default:
 136          assert(0);
 137          break;
 138       }
 139
 140       pipe->screen->surface_unmap(pipe->screen, dst);
 141    }
 142    else {
 143       brw_fill_blit(brw_context(pipe),
 144                     dst->cpp,
 145                     (short) dst->pitch,
 146                     dst->buffer, dst->offset, FALSE,
 147                     (short) dstx, (short) dsty,
 148                     (short) width, (short) height,
 149                     value);
 150    }
 151 }
 152
 153
 154 void
 155 brw_init_surface_functions(struct brw_context *brw)
 156 {
 157    brw->pipe.surface_copy  = brw_surface_copy;
 158    brw->pipe.surface_fill  = brw_surface_fill;
 159 }