src/gallium/drivers/llvmpipe/lp_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 "util/u_rect.h"
  29 #include "lp_context.h"
  30 #include "lp_flush.h"
  31 #include "lp_surface.h"
  32 #include "lp_texture.h"
  33 #include "lp_tile_image.h"
  34 #include "lp_tile_size.h"
  35
  36
  37 /**
  38  * Adjust x, y, width, height to lie on tile bounds.
  39  */
  40 static void
  41 adjust_to_tile_bounds(unsigned x, unsigned y, unsigned width, unsigned height,
  42                       unsigned *x_tile, unsigned *y_tile,
  43                       unsigned *w_tile, unsigned *h_tile)
  44 {
  45    *x_tile = x & ~(TILE_SIZE - 1);
  46    *y_tile = y & ~(TILE_SIZE - 1);
  47    *w_tile = ((x + width + TILE_SIZE - 1) & ~(TILE_SIZE - 1)) - *x_tile;
  48    *h_tile = ((y + height + TILE_SIZE - 1) & ~(TILE_SIZE - 1)) - *y_tile;
  49 }
  50
  51
  52
  53 static void
  54 lp_surface_copy(struct pipe_context *pipe,
  55                 struct pipe_surface *dst, unsigned dstx, unsigned dsty,
  56                 struct pipe_surface *src, unsigned srcx, unsigned srcy,
  57                 unsigned width, unsigned height)
  58 {
  59    llvmpipe_flush_texture(pipe,
  60                           dst->texture, dst->face, dst->level,
  61                           0, /* flush_flags */
  62                           FALSE, /* read_only */
  63                           FALSE, /* cpu_access */
  64                           FALSE); /* do_not_flush */
  65
  66    llvmpipe_flush_texture(pipe,
  67                           src->texture, src->face, src->level,
  68                           0, /* flush_flags */
  69                           TRUE, /* read_only */
  70                           FALSE, /* cpu_access */
  71                           FALSE); /* do_not_flush */
  72
  73    /* Look for special case in which we're copying from a tiled image
  74     * to a linear image.
  75     */
  76    {
  77       struct llvmpipe_resource *src_tex = llvmpipe_resource(src->texture);
  78       struct llvmpipe_resource *dst_tex = llvmpipe_resource(dst->texture);
  79       enum pipe_format format = src_tex->base.format;
  80
  81       /*
  82       printf("surface copy from %u to %u: %u,%u to %u,%u %u x %u\n",
  83              src_tex->id, dst_tex->id,
  84              srcx, srcy, dstx, dsty, width, height);
  85       */
  86
  87       /* set src tiles to linear layout */
  88       {
  89          unsigned tx, ty, tw, th;
  90          unsigned x, y;
  91
  92          adjust_to_tile_bounds(srcx, srcy, width, height, &tx, &ty, &tw, &th);
  93
  94          for (y = 0; y < th; y += TILE_SIZE) {
  95             for (x = 0; x < tw; x += TILE_SIZE) {
  96                (void) llvmpipe_get_texture_tile_linear(src_tex,
  97                                                        src->face, src->level,
  98                                                        LP_TEX_USAGE_READ,
  99                                                        tx + x, ty + y);
 100             }
 101          }
 102       }
 103
 104       /* set dst tiles to linear layout */
 105       {
 106          unsigned tx, ty, tw, th;
 107          unsigned x, y;
 108          enum lp_texture_usage usage;
 109
 110          /* XXX for the tiles which are completely contained by the
 111           * dest rectangle, we could set the usage mode to WRITE_ALL.
 112           * Just test for the case of replacing the whole dest region for now.
 113           */
 114          if (width == dst_tex->base.width0 && height == dst_tex->base.height0)
 115             usage = LP_TEX_USAGE_WRITE_ALL;
 116          else
 117             usage = LP_TEX_USAGE_READ_WRITE;
 118
 119          adjust_to_tile_bounds(dstx, dsty, width, height, &tx, &ty, &tw, &th);
 120
 121          for (y = 0; y < th; y += TILE_SIZE) {
 122             for (x = 0; x < tw; x += TILE_SIZE) {
 123                (void) llvmpipe_get_texture_tile_linear(dst_tex,
 124                                                        dst->face, dst->level,
 125                                                        usage,
 126                                                        tx + x, ty + y);
 127             }
 128          }
 129       }
 130
 131       /* copy */
 132       {
 133          const ubyte *src_linear_ptr
 134             = llvmpipe_get_texture_image_address(src_tex, src->face,
 135                                                  src->level,
 136                                                  LP_TEX_LAYOUT_LINEAR);
 137          ubyte *dst_linear_ptr
 138             = llvmpipe_get_texture_image_address(dst_tex, dst->face,
 139                                                  dst->level,
 140                                                  LP_TEX_LAYOUT_LINEAR);
 141
 142          util_copy_rect(dst_linear_ptr, format,
 143                         dst_tex->stride[dst->level],
 144                         dstx, dsty,
 145                         width, height,
 146                         src_linear_ptr, src_tex->stride[src->level],
 147                         srcx, srcy);
 148       }
 149       return;
 150    }
 151
 152    util_surface_copy(pipe, FALSE,
 153                      dst, dstx, dsty,
 154                      src, srcx, srcy,
 155                      width, height);
 156 }
 157
 158 void
 159 lp_init_surface_functions(struct llvmpipe_context *lp)
 160 {
 161    lp->pipe.surface_copy = lp_surface_copy;
 162    lp->pipe.surface_fill = util_surface_fill;
 163 }