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
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* Copyright © 2009 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
#include "brw_context.h"
#include "brw_state.h"
#include "brw_defines.h"
#include "brw_util.h"
#include "intel_batchbuffer.h"
#include "main/macros.h"
static void
prepare_blend_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->intel.ctx;
struct gen6_blend_state *blend;
int b;
int nr_draw_buffers = ctx->DrawBuffer->_NumColorDrawBuffers;
int size;
/* We need at least one BLEND_STATE written, because we might do
* thread dispatch even if _NumColorDrawBuffers is 0 (for example
* for computed depth or alpha test), which will do an FB write
* with render target 0, which will reference BLEND_STATE[0] for
* alpha test enable.
*/
if (nr_draw_buffers == 0 && ctx->Color.AlphaEnabled)
nr_draw_buffers = 1;
size = sizeof(*blend) * nr_draw_buffers;
blend = brw_state_batch(brw, size, 64, &brw->cc.blend_state_offset);
memset(blend, 0, size);
for (b = 0; b < nr_draw_buffers; b++) {
/* _NEW_COLOR */
if (ctx->Color._LogicOpEnabled) {
struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[b];
/* _NEW_BUFFERS */
/* Floating point RTs should have no effect from LogicOp,
* except for disabling of blending
*/
if (_mesa_get_format_datatype(rb->Format) != GL_FLOAT) {
blend[b].blend1.logic_op_enable = 1;
blend[b].blend1.logic_op_func =
intel_translate_logic_op(ctx->Color.LogicOp);
}
} else if (ctx->Color.BlendEnabled & (1 << b)) {
GLenum eqRGB = ctx->Color.Blend[0].EquationRGB;
GLenum eqA = ctx->Color.Blend[0].EquationA;
GLenum srcRGB = ctx->Color.Blend[0].SrcRGB;
GLenum dstRGB = ctx->Color.Blend[0].DstRGB;
GLenum srcA = ctx->Color.Blend[0].SrcA;
GLenum dstA = ctx->Color.Blend[0].DstA;
if (eqRGB == GL_MIN || eqRGB == GL_MAX) {
srcRGB = dstRGB = GL_ONE;
}
if (eqA == GL_MIN || eqA == GL_MAX) {
srcA = dstA = GL_ONE;
}
blend[b].blend0.dest_blend_factor = brw_translate_blend_factor(dstRGB);
blend[b].blend0.source_blend_factor = brw_translate_blend_factor(srcRGB);
blend[b].blend0.blend_func = brw_translate_blend_equation(eqRGB);
blend[b].blend0.ia_dest_blend_factor = brw_translate_blend_factor(dstA);
blend[b].blend0.ia_source_blend_factor = brw_translate_blend_factor(srcA);
blend[b].blend0.ia_blend_func = brw_translate_blend_equation(eqA);
blend[b].blend0.blend_enable = 1;
blend[b].blend0.ia_blend_enable = (srcA != srcRGB ||
dstA != dstRGB ||
eqA != eqRGB);
}
/* _NEW_COLOR */
if (ctx->Color.AlphaEnabled) {
blend[b].blend1.alpha_test_enable = 1;
blend[b].blend1.alpha_test_func =
intel_translate_compare_func(ctx->Color.AlphaFunc);
}
/* _NEW_COLOR */
if (ctx->Color.DitherFlag) {
blend[b].blend1.dither_enable = 1;
blend[b].blend1.y_dither_offset = 0;
blend[b].blend1.x_dither_offset = 0;
}
blend[b].blend1.write_disable_r = !ctx->Color.ColorMask[b][0];
blend[b].blend1.write_disable_g = !ctx->Color.ColorMask[b][1];
blend[b].blend1.write_disable_b = !ctx->Color.ColorMask[b][2];
blend[b].blend1.write_disable_a = !ctx->Color.ColorMask[b][3];
}
brw->state.dirty.cache |= CACHE_NEW_BLEND_STATE;
}
const struct brw_tracked_state gen6_blend_state = {
.dirty = {
.mesa = (_NEW_COLOR |
_NEW_BUFFERS),
.brw = BRW_NEW_BATCH,
.cache = 0,
},
.prepare = prepare_blend_state,
};
static void
gen6_prepare_color_calc_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->intel.ctx;
struct gen6_color_calc_state *cc;
cc = brw_state_batch(brw, sizeof(*cc), 64, &brw->cc.state_offset);
memset(cc, 0, sizeof(*cc));
/* _NEW_COLOR */
cc->cc0.alpha_test_format = BRW_ALPHATEST_FORMAT_UNORM8;
UNCLAMPED_FLOAT_TO_UBYTE(cc->cc1.alpha_ref_fi.ui, ctx->Color.AlphaRef);
/* _NEW_STENCIL */
cc->cc0.stencil_ref = ctx->Stencil.Ref[0];
cc->cc0.bf_stencil_ref = ctx->Stencil.Ref[ctx->Stencil._BackFace];
/* _NEW_COLOR */
cc->constant_r = ctx->Color.BlendColorUnclamped[0];
cc->constant_g = ctx->Color.BlendColorUnclamped[1];
cc->constant_b = ctx->Color.BlendColorUnclamped[2];
cc->constant_a = ctx->Color.BlendColorUnclamped[3];
brw->state.dirty.cache |= CACHE_NEW_COLOR_CALC_STATE;
}
const struct brw_tracked_state gen6_color_calc_state = {
.dirty = {
.mesa = _NEW_COLOR | _NEW_STENCIL,
.brw = BRW_NEW_BATCH,
.cache = 0,
},
.prepare = gen6_prepare_color_calc_state,
};
static void upload_cc_state_pointers(struct brw_context *brw)
{
struct intel_context *intel = &brw->intel;
BEGIN_BATCH(4);
OUT_BATCH(_3DSTATE_CC_STATE_POINTERS << 16 | (4 - 2));
OUT_BATCH(brw->cc.blend_state_offset | 1);
OUT_BATCH(brw->cc.depth_stencil_state_offset | 1);
OUT_BATCH(brw->cc.state_offset | 1);
ADVANCE_BATCH();
}
const struct brw_tracked_state gen6_cc_state_pointers = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_BATCH,
.cache = (CACHE_NEW_BLEND_STATE |
CACHE_NEW_COLOR_CALC_STATE |
CACHE_NEW_DEPTH_STENCIL_STATE)
},
.emit = upload_cc_state_pointers,
};
|
