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_resource_copy(struct pipe_context *pipe,
  55                  struct pipe_resource *dst, unsigned dst_level,
  56                  unsigned dstx, unsigned dsty, unsigned dstz,
  57                  struct pipe_resource *src, unsigned src_level,
  58                  const struct pipe_box *src_box)
  59 {
  60    /* XXX this used to ignore srcz/dstz
  61     * assume it works the same for cube and 3d
  62     */
  63    struct llvmpipe_resource *src_tex = llvmpipe_resource(src);
  64    struct llvmpipe_resource *dst_tex = llvmpipe_resource(dst);
  65    const enum pipe_format format = src_tex->base.format;
  66    unsigned width = src_box->width;
  67    unsigned height = src_box->height;
  68    assert(src_box->depth == 1);
  69
  70    /* Fallback for buffers. */
  71    if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
  72       util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz,
  73                                 src, src_level, src_box);
  74       return;
  75    }
  76
  77    llvmpipe_flush_resource(pipe,
  78                            dst, dst_level, dstz,
  79                            FALSE, /* read_only */
  80                            TRUE, /* cpu_access */
  81                            FALSE, /* do_not_block */
  82                            "blit dest");
  83
  84    llvmpipe_flush_resource(pipe,
  85                            src, src_level, src_box->z,
  86                            TRUE, /* read_only */
  87                            TRUE, /* cpu_access */
  88                            FALSE, /* do_not_block */
  89                            "blit src");
  90
  91    /*
  92    printf("surface copy from %u lvl %u to %u lvl %u: %u,%u,%u to %u,%u,%u %u x %u x %u\n",
  93           src_tex->id, src_level, dst_tex->id, dst_level,
  94           src_box->x, src_box->y, src_box->z, dstx, dsty, dstz,
  95           src_box->width, src_box->height, src_box->depth);
  96    */
  97
  98    /* set src tiles to linear layout */
  99    {
 100       unsigned tx, ty, tw, th;
 101       unsigned x, y;
 102
 103       adjust_to_tile_bounds(src_box->x, src_box->y, width, height,
 104                             &tx, &ty, &tw, &th);
 105
 106       for (y = 0; y < th; y += TILE_SIZE) {
 107          for (x = 0; x < tw; x += TILE_SIZE) {
 108             (void) llvmpipe_get_texture_tile_linear(src_tex,
 109                                                     src_box->z, src_level,
 110                                                     LP_TEX_USAGE_READ,
 111                                                     tx + x, ty + y);
 112          }
 113       }
 114    }
 115
 116    /* set dst tiles to linear layout */
 117    {
 118       unsigned tx, ty, tw, th;
 119       unsigned x, y;
 120       enum lp_texture_usage usage;
 121
 122       adjust_to_tile_bounds(dstx, dsty, width, height, &tx, &ty, &tw, &th);
 123
 124       for (y = 0; y < th; y += TILE_SIZE) {
 125          boolean contained_y = ty + y >= dsty &&
 126                                ty + y + TILE_SIZE <= dsty + height ?
 127                                TRUE : FALSE;
 128
 129          for (x = 0; x < tw; x += TILE_SIZE) {
 130             boolean contained_x = tx + x >= dstx &&
 131                                   tx + x + TILE_SIZE <= dstx + width ?
 132                                   TRUE : FALSE;
 133
 134             /*
 135              * Set the usage mode to WRITE_ALL for the tiles which are
 136              * completely contained by the dest rectangle.
 137              */
 138             if (contained_y && contained_x)
 139                usage = LP_TEX_USAGE_WRITE_ALL;
 140             else
 141                usage = LP_TEX_USAGE_READ_WRITE;
 142
 143             (void) llvmpipe_get_texture_tile_linear(dst_tex,
 144                                                     dstz, dst_level,
 145                                                     usage,
 146                                                     tx + x, ty + y);
 147          }
 148       }
 149    }
 150
 151    /* copy */
 152    {
 153       const ubyte *src_linear_ptr
 154          = llvmpipe_get_texture_image_address(src_tex, src_box->z,
 155                                               src_level,
 156                                               LP_TEX_LAYOUT_LINEAR);
 157       ubyte *dst_linear_ptr
 158          = llvmpipe_get_texture_image_address(dst_tex, dstz,
 159                                               dst_level,
 160                                               LP_TEX_LAYOUT_LINEAR);
 161
 162       if (dst_linear_ptr && src_linear_ptr) {
 163          util_copy_rect(dst_linear_ptr, format,
 164                         llvmpipe_resource_stride(&dst_tex->base, dst_level),
 165                         dstx, dsty,
 166                         width, height,
 167                         src_linear_ptr,
 168                         llvmpipe_resource_stride(&src_tex->base, src_level),
 169                         src_box->x, src_box->y);
 170       }
 171    }
 172 }
 173
 174
 175 void
 176 llvmpipe_init_surface_functions(struct llvmpipe_context *lp)
 177 {
 178    lp->pipe.resource_copy_region = lp_resource_copy;
 179    lp->pipe.clear_render_target = util_clear_render_target;
 180    lp->pipe.clear_depth_stencil = util_clear_depth_stencil;
 181 }