brw_blorp.cpp revision 602e9a0f3727b036caf3a7b228fe90d36d832ea7 
1/*
2 * Copyright © 2012 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#include "intel_fbo.h"
25
26#include "brw_blorp.h"
27#include "brw_defines.h"
28#include "gen6_blorp.h"
29#include "gen7_blorp.h"
30
31brw_blorp_mip_info::brw_blorp_mip_info()
32   : mt(NULL),
33     level(0),
34     layer(0),
35     width(0),
36     height(0)
37{
38}
39
40brw_blorp_surface_info::brw_blorp_surface_info()
41   : map_stencil_as_y_tiled(false),
42     num_samples(0)
43{
44}
45
46void
47brw_blorp_mip_info::set(struct intel_mipmap_tree *mt,
48                        unsigned int level, unsigned int layer)
49{
50   intel_miptree_check_level_layer(mt, level, layer);
51
52   this->mt = mt;
53   this->level = level;
54   this->layer = layer;
55   this->width = mt->level[level].width;
56   this->height = mt->level[level].height;
57}
58
59void
60brw_blorp_surface_info::set(struct brw_context *brw,
61                            struct intel_mipmap_tree *mt,
62                            unsigned int level, unsigned int layer)
63{
64   brw_blorp_mip_info::set(mt, level, layer);
65   this->num_samples = mt->num_samples;
66   this->array_spacing_lod0 = mt->array_spacing_lod0;
67   this->map_stencil_as_y_tiled = false;
68   this->msaa_layout = mt->msaa_layout;
69
70   switch (mt->format) {
71   case MESA_FORMAT_S8:
72      /* The miptree is a W-tiled stencil buffer.  Surface states can't be set
73       * up for W tiling, so we'll need to use Y tiling and have the WM
74       * program swizzle the coordinates.
75       */
76      this->map_stencil_as_y_tiled = true;
77      this->brw_surfaceformat = BRW_SURFACEFORMAT_R8_UNORM;
78      break;
79   case MESA_FORMAT_X8_Z24:
80   case MESA_FORMAT_Z32_FLOAT:
81      /* The miptree consists of 32 bits per pixel, arranged either as 24-bit
82       * depth values interleaved with 8 "don't care" bits, or as 32-bit
83       * floating point depth values.  Since depth values don't require any
84       * blending, it doesn't matter how we interpret the bit pattern as long
85       * as we copy the right amount of data, so just map it as 8-bit BGRA.
86       */
87      this->brw_surfaceformat = BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
88      break;
89   case MESA_FORMAT_Z16:
90      /* The miptree consists of 16 bits per pixel of depth data.  Since depth
91       * values don't require any blending, it doesn't matter how we interpret
92       * the bit pattern as long as we copy the right amount of data, so just
93       * map is as 8-bit RG.
94       */
95      this->brw_surfaceformat = BRW_SURFACEFORMAT_R8G8_UNORM;
96      break;
97   default:
98      /* Blorp blits don't support any sort of format conversion, so we can
99       * safely assume that the same format is being used for the source and
100       * destination.  Therefore the format must be supported as a render
101       * target, even if this is the source image.  So we can convert to a
102       * surface format using brw->render_target_format.
103       */
104      assert(brw->format_supported_as_render_target[mt->format]);
105      this->brw_surfaceformat = brw->render_target_format[mt->format];
106      break;
107   }
108}
109
110void
111brw_blorp_mip_info::get_draw_offsets(uint32_t *draw_x, uint32_t *draw_y) const
112{
113   /* Construct a dummy renderbuffer just to extract tile offsets. */
114   struct intel_renderbuffer rb;
115   rb.mt = mt;
116   rb.mt_level = level;
117   rb.mt_layer = layer;
118   intel_renderbuffer_set_draw_offset(&rb);
119   *draw_x = rb.draw_x;
120   *draw_y = rb.draw_y;
121}
122
123brw_blorp_params::brw_blorp_params()
124   : x0(0),
125     y0(0),
126     x1(0),
127     y1(0),
128     depth_format(0),
129     hiz_op(GEN6_HIZ_OP_NONE),
130     num_samples(0),
131     use_wm_prog(false)
132{
133}
134
135extern "C" {
136void
137intel_hiz_exec(struct intel_context *intel, struct intel_mipmap_tree *mt,
138	       unsigned int level, unsigned int layer, gen6_hiz_op op)
139{
140   brw_hiz_op_params params(mt, level, layer, op);
141   brw_blorp_exec(intel, &params);
142}
143
144} /* extern "C" */
145
146void
147brw_blorp_exec(struct intel_context *intel, const brw_blorp_params *params)
148{
149   switch (intel->gen) {
150   case 6:
151      gen6_blorp_exec(intel, params);
152      break;
153   case 7:
154      gen7_blorp_exec(intel, params);
155      break;
156   default:
157      /* BLORP is not supported before Gen6. */
158      assert(false);
159      break;
160   }
161}
162
163brw_hiz_op_params::brw_hiz_op_params(struct intel_mipmap_tree *mt,
164                                     unsigned int level,
165                                     unsigned int layer,
166                                     gen6_hiz_op op)
167{
168   this->hiz_op = op;
169
170   depth.set(mt, level, layer);
171   x1 = depth.width;
172   y1 = depth.height;
173
174   assert(mt->hiz_mt != NULL);
175
176   switch (mt->format) {
177   case MESA_FORMAT_Z16:       depth_format = BRW_DEPTHFORMAT_D16_UNORM; break;
178   case MESA_FORMAT_Z32_FLOAT: depth_format = BRW_DEPTHFORMAT_D32_FLOAT; break;
179   case MESA_FORMAT_X8_Z24:    depth_format = BRW_DEPTHFORMAT_D24_UNORM_X8_UINT; break;
180   default:                    assert(0); break;
181   }
182}
183
184uint32_t
185brw_hiz_op_params::get_wm_prog(struct brw_context *brw,
186                               brw_blorp_prog_data **prog_data) const
187{
188   return 0;
189}
190