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