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 */
40static void
41adjust_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
53static void
54lp_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
175void
176llvmpipe_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}
182