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,
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  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, struct pipe_subresource subdst,
  56                  unsigned dstx, unsigned dsty, unsigned dstz,
  57                  struct pipe_resource *src, struct pipe_subresource subsrc,
  58                  unsigned srcx, unsigned srcy, unsigned srcz,
  59                  unsigned width, unsigned height)
  60 {
  61    /* XXX what about the dstz/srcz parameters - zslice wasn't used... */
  62    struct llvmpipe_resource *src_tex = llvmpipe_resource(src);
  63    struct llvmpipe_resource *dst_tex = llvmpipe_resource(dst);
  64    const enum pipe_format format = src_tex->base.format;
  65
  66    llvmpipe_flush_resource(pipe,
  67                            dst, subdst.face, subdst.level,
  68                            0, /* flush_flags */
  69                            FALSE, /* read_only */
  70                            FALSE, /* cpu_access */
  71                            FALSE); /* do_not_block */
  72
  73    llvmpipe_flush_resource(pipe,
  74                            src, subsrc.face, subsrc.level,
  75                            0, /* flush_flags */
  76                            TRUE, /* read_only */
  77                            FALSE, /* cpu_access */
  78                            FALSE); /* do_not_block */
  79
  80    /*
  81    printf("surface copy from %u to %u: %u,%u to %u,%u %u x %u\n",
  82           src_tex->id, dst_tex->id,
  83           srcx, srcy, dstx, dsty, width, height);
  84    */
  85
  86    /* set src tiles to linear layout */
  87    {
  88       unsigned tx, ty, tw, th;
  89       unsigned x, y;
  90
  91       adjust_to_tile_bounds(srcx, srcy, width, height, &tx, &ty, &tw, &th);
  92
  93       for (y = 0; y < th; y += TILE_SIZE) {
  94          for (x = 0; x < tw; x += TILE_SIZE) {
  95             (void) llvmpipe_get_texture_tile_linear(src_tex,
  96                                                     subsrc.face, subsrc.level,
  97                                                     LP_TEX_USAGE_READ,
  98                                                     tx + x, ty + y);
  99          }
 100       }
 101    }
 102
 103    /* set dst tiles to linear layout */
 104    {
 105       unsigned tx, ty, tw, th;
 106       unsigned x, y;
 107       enum lp_texture_usage usage;
 108
 109       /* XXX for the tiles which are completely contained by the
 110        * dest rectangle, we could set the usage mode to WRITE_ALL.
 111        * Just test for the case of replacing the whole dest region for now.
 112        */
 113       if (width == dst_tex->base.width0 && height == dst_tex->base.height0)
 114          usage = LP_TEX_USAGE_WRITE_ALL;
 115       else
 116          usage = LP_TEX_USAGE_READ_WRITE;
 117
 118       adjust_to_tile_bounds(dstx, dsty, width, height, &tx, &ty, &tw, &th);
 119
 120       for (y = 0; y < th; y += TILE_SIZE) {
 121          for (x = 0; x < tw; x += TILE_SIZE) {
 122             (void) llvmpipe_get_texture_tile_linear(dst_tex,
 123                                                     subdst.face, subdst.level,
 124                                                     usage,
 125                                                     tx + x, ty + y);
 126          }
 127       }
 128    }
 129
 130    /* copy */
 131    {
 132       const ubyte *src_linear_ptr
 133          = llvmpipe_get_texture_image_address(src_tex, subsrc.face,
 134                                               subsrc.level,
 135                                               LP_TEX_LAYOUT_LINEAR);
 136       ubyte *dst_linear_ptr
 137          = llvmpipe_get_texture_image_address(dst_tex, subdst.face,
 138                                               subdst.level,
 139                                               LP_TEX_LAYOUT_LINEAR);
 140
 141       util_copy_rect(dst_linear_ptr, format,
 142                      llvmpipe_resource_stride(&dst_tex->base, subdst.level),
 143                      dstx, dsty,
 144                      width, height,
 145                      src_linear_ptr,
 146                      llvmpipe_resource_stride(&src_tex->base, subsrc.level),
 147                      srcx, srcy);
 148    }
 149 }
 150
 151
 152 void
 153 llvmpipe_init_surface_functions(struct llvmpipe_context *lp)
 154 {
 155    lp->pipe.resource_copy_region = lp_resource_copy;
 156    lp->pipe.clear_render_target = util_clear_render_target;
 157    lp->pipe.clear_depth_stencil = util_clear_depth_stencil;
 158 }