1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/*
* Copyright © 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "intel_batchbuffer.h"
#include "intel_regions.h"
#include "intel_fbo.h"
#include "brw_context.h"
#include "brw_state.h"
#include "brw_defines.h"
unsigned int
gen7_depth_format(struct brw_context *brw)
{
struct intel_context *intel = &brw->intel;
struct gl_context *ctx = &intel->ctx;
struct gl_framebuffer *fb = ctx->DrawBuffer;
struct intel_renderbuffer *drb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
struct intel_region *region = NULL;
if (drb)
region = drb->region;
else
return BRW_DEPTHFORMAT_D32_FLOAT;
switch (region->cpp) {
case 2:
return BRW_DEPTHFORMAT_D16_UNORM;
case 4:
if (intel->depth_buffer_is_float)
return BRW_DEPTHFORMAT_D32_FLOAT;
else
return BRW_DEPTHFORMAT_D24_UNORM_X8_UINT;
default:
assert(!"Should not get here.");
}
return 0;
}
static void prepare_depthbuffer(struct brw_context *brw)
{
struct intel_context *intel = &brw->intel;
struct gl_context *ctx = &intel->ctx;
struct gl_framebuffer *fb = ctx->DrawBuffer;
struct intel_renderbuffer *drb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
struct intel_renderbuffer *srb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
if (drb)
brw_add_validated_bo(brw, drb->region->buffer);
if (srb)
brw_add_validated_bo(brw, srb->region->buffer);
}
static void emit_depthbuffer(struct brw_context *brw)
{
struct intel_context *intel = &brw->intel;
struct gl_context *ctx = &intel->ctx;
struct gl_framebuffer *fb = ctx->DrawBuffer;
/* _NEW_BUFFERS */
struct intel_renderbuffer *drb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
struct intel_renderbuffer *srb = intel_get_renderbuffer(fb, BUFFER_STENCIL);
/* Gen7 doesn't support packed depth/stencil */
assert(srb == NULL || srb != drb);
if (drb == NULL) {
uint32_t dw1 = BRW_DEPTHFORMAT_D32_FLOAT << 18;
uint32_t dw3 = 0;
if (srb == NULL) {
dw1 |= (BRW_SURFACE_NULL << 29);
} else {
struct intel_region *region = srb->region;
/* _NEW_STENCIL: enable stencil buffer writes */
dw1 |= ((ctx->Stencil.WriteMask != 0) << 27);
/* 3DSTATE_STENCIL_BUFFER inherits surface type and dimensions. */
dw1 |= (BRW_SURFACE_2D << 29);
dw3 = ((region->width - 1) << 4) | ((2 * region->height - 1) << 18);
}
BEGIN_BATCH(7);
OUT_BATCH(GEN7_3DSTATE_DEPTH_BUFFER << 16 | (7 - 2));
OUT_BATCH(dw1);
OUT_BATCH(0);
OUT_BATCH(dw3);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
} else {
struct intel_region *region = drb->region;
uint32_t tile_x, tile_y, offset;
offset = intel_renderbuffer_tile_offsets(drb, &tile_x, &tile_y);
assert(region->tiling == I915_TILING_Y);
/* _NEW_DEPTH, _NEW_STENCIL */
BEGIN_BATCH(7);
OUT_BATCH(GEN7_3DSTATE_DEPTH_BUFFER << 16 | (7 - 2));
OUT_BATCH(((region->pitch * region->cpp) - 1) |
(gen7_depth_format(brw) << 18) |
(0 << 22) /* no HiZ buffer */ |
((srb != NULL && ctx->Stencil.WriteMask != 0) << 27) |
((ctx->Depth.Mask != 0) << 28) |
(BRW_SURFACE_2D << 29));
OUT_RELOC(region->buffer,
I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
offset);
OUT_BATCH(((region->width - 1) << 4) | ((region->height - 1) << 18));
OUT_BATCH(0);
OUT_BATCH(tile_x | (tile_y << 16));
OUT_BATCH(0);
ADVANCE_BATCH();
}
BEGIN_BATCH(4);
OUT_BATCH(GEN7_3DSTATE_HIER_DEPTH_BUFFER << 16 | (4 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
if (srb == NULL) {
BEGIN_BATCH(3);
OUT_BATCH(GEN7_3DSTATE_STENCIL_BUFFER << 16 | (3 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
} else {
BEGIN_BATCH(3);
OUT_BATCH(GEN7_3DSTATE_STENCIL_BUFFER << 16 | (3 - 2));
OUT_BATCH(srb->region->pitch * srb->region->cpp - 1);
OUT_RELOC(srb->region->buffer,
I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
0);
ADVANCE_BATCH();
}
BEGIN_BATCH(3);
OUT_BATCH(GEN7_3DSTATE_CLEAR_PARAMS << 16 | (3 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
}
/**
* \see brw_context.state.depth_region
*/
const struct brw_tracked_state gen7_depthbuffer = {
.dirty = {
.mesa = (_NEW_BUFFERS | _NEW_DEPTH | _NEW_STENCIL),
.brw = BRW_NEW_BATCH,
.cache = 0,
},
.prepare = prepare_depthbuffer,
.emit = emit_depthbuffer,
};
|
