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 "util/u_surface.h"
  30 #include "lp_context.h"
  31 #include "lp_flush.h"
  32 #include "lp_limits.h"
  33 #include "lp_surface.h"
  34 #include "lp_texture.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    struct llvmpipe_resource *src_tex = llvmpipe_resource(src->texture);
  60    struct llvmpipe_resource *dst_tex = llvmpipe_resource(dst->texture);
  61    const enum pipe_format format = src_tex->base.format;
  62
  63    llvmpipe_flush_resource(pipe,
  64                            dst->texture, dst->face, dst->level,
  65                            0, /* flush_flags */
  66                            FALSE, /* read_only */
  67                            FALSE, /* cpu_access */
  68                            FALSE); /* do_not_block */
  69
  70    llvmpipe_flush_resource(pipe,
  71                            src->texture, src->face, src->level,
  72                            0, /* flush_flags */
  73                            TRUE, /* read_only */
  74                            FALSE, /* cpu_access */
  75                            FALSE); /* do_not_block */
  76
  77    /*
  78    printf("surface copy from %u to %u: %u,%u to %u,%u %u x %u\n",
  79           src_tex->id, dst_tex->id,
  80           srcx, srcy, dstx, dsty, width, height);
  81    */
  82
  83    /* set src tiles to linear layout */
  84    {
  85       unsigned tx, ty, tw, th;
  86       unsigned x, y;
  87
  88       adjust_to_tile_bounds(srcx, srcy, width, height, &tx, &ty, &tw, &th);
  89
  90       for (y = 0; y < th; y += TILE_SIZE) {
  91          for (x = 0; x < tw; x += TILE_SIZE) {
  92             (void) llvmpipe_get_texture_tile_linear(src_tex,
  93                                                     src->face, src->level,
  94                                                        LP_TEX_USAGE_READ,
  95                                                     tx + x, ty + y);
  96          }
  97       }
  98    }
  99
 100    /* set dst tiles to linear layout */
 101    {
 102       unsigned tx, ty, tw, th;
 103       unsigned x, y;
 104       enum lp_texture_usage usage;
 105
 106       /* XXX for the tiles which are completely contained by the
 107        * dest rectangle, we could set the usage mode to WRITE_ALL.
 108        * Just test for the case of replacing the whole dest region for now.
 109        */
 110       if (width == dst_tex->base.width0 && height == dst_tex->base.height0)
 111          usage = LP_TEX_USAGE_WRITE_ALL;
 112       else
 113          usage = LP_TEX_USAGE_READ_WRITE;
 114
 115       adjust_to_tile_bounds(dstx, dsty, width, height, &tx, &ty, &tw, &th);
 116
 117       for (y = 0; y < th; y += TILE_SIZE) {
 118          for (x = 0; x < tw; x += TILE_SIZE) {
 119             (void) llvmpipe_get_texture_tile_linear(dst_tex,
 120                                                     dst->face, dst->level,
 121                                                     usage,
 122                                                     tx + x, ty + y);
 123          }
 124       }
 125    }
 126
 127    /* copy */
 128    {
 129       const ubyte *src_linear_ptr
 130          = llvmpipe_get_texture_image_address(src_tex, src->face,
 131                                               src->level,
 132                                               LP_TEX_LAYOUT_LINEAR);
 133       ubyte *dst_linear_ptr
 134          = llvmpipe_get_texture_image_address(dst_tex, dst->face,
 135                                               dst->level,
 136                                               LP_TEX_LAYOUT_LINEAR);
 137
 138       util_copy_rect(dst_linear_ptr, format,
 139                      llvmpipe_resource_stride(&dst_tex->base, dst->level),
 140                      dstx, dsty,
 141                      width, height,
 142                      src_linear_ptr,
 143                      llvmpipe_resource_stride(&src_tex->base, src->level),
 144                      srcx, srcy);
 145    }
 146 }
 147
 148
 149 void
 150 llvmpipe_init_surface_functions(struct llvmpipe_context *lp)
 151 {
 152    lp->pipe.surface_copy = lp_surface_copy;
 153    lp->pipe.surface_fill = util_surface_fill;
 154 }