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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/alignment.h"
#include "common/settings.h"
#include "shader_recompiler/environment.h"
#include "shader_recompiler/frontend/ir/ir_emitter.h"
#include "shader_recompiler/frontend/ir/modifiers.h"
#include "shader_recompiler/frontend/ir/program.h"
#include "shader_recompiler/frontend/ir/value.h"
#include "shader_recompiler/ir_opt/passes.h"
#include "shader_recompiler/shader_info.h"
namespace Shader::Optimization {
namespace {
void PatchFragCoord(IR::Block& block, IR::Inst& inst) {
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const IR::F32 down_factor{ir.ResolutionDownFactor()};
const IR::F32 frag_coord{ir.GetAttribute(inst.Arg(0).Attribute())};
const IR::F32 downscaled_frag_coord{ir.FPMul(frag_coord, down_factor)};
inst.ReplaceUsesWith(downscaled_frag_coord);
}
[[nodiscard]] IR::U32 Scale(IR::IREmitter& ir, const IR::U1& is_scaled, const IR::U32& value) {
IR::U32 scaled_value{value};
bool changed{};
if (const u32 up_scale = Settings::values.resolution_info.up_scale; up_scale != 1) {
scaled_value = ir.IMul(scaled_value, ir.Imm32(up_scale));
changed = true;
}
if (const u32 down_shift = Settings::values.resolution_info.down_shift; down_shift != 0) {
scaled_value = ir.ShiftRightArithmetic(scaled_value, ir.Imm32(down_shift));
changed = true;
}
if (changed) {
return IR::U32{ir.Select(is_scaled, scaled_value, value)};
} else {
return value;
}
}
[[nodiscard]] IR::U32 SubScale(IR::IREmitter& ir, const IR::U1& is_scaled, const IR::U32& value,
const IR::Attribute attrib) {
if (Settings::values.resolution_info.active) {
const IR::F32 opt1{ir.Imm32(Settings::values.resolution_info.up_factor)};
const IR::F32 base{ir.FPMul(ir.ConvertUToF(32, 32, value), opt1)};
const IR::F32 frag_coord{ir.GetAttribute(attrib)};
const IR::F32 opt2{ir.Imm32(Settings::values.resolution_info.down_factor)};
const IR::F32 floor{ir.FPMul(opt1, ir.FPFloor(ir.FPMul(frag_coord, opt2)))};
const IR::U32 deviation{
ir.ConvertFToU(32, ir.FPAdd(base, ir.FPAdd(frag_coord, ir.FPNeg(floor))))};
return IR::U32{ir.Select(is_scaled, deviation, value)};
} else {
return value;
}
}
[[nodiscard]] IR::U32 DownScale(IR::IREmitter& ir, const IR::U1& is_scaled, IR::U32 value) {
IR::U32 scaled_value{value};
bool changed{};
if (const u32 down_shift = Settings::values.resolution_info.down_shift; down_shift != 0) {
scaled_value = ir.ShiftLeftLogical(scaled_value, ir.Imm32(down_shift));
changed = true;
}
if (const u32 up_scale = Settings::values.resolution_info.up_scale; up_scale != 1) {
scaled_value = ir.IDiv(scaled_value, ir.Imm32(up_scale));
changed = true;
}
if (changed) {
return IR::U32{ir.Select(is_scaled, scaled_value, value)};
} else {
return value;
}
}
void PatchImageQueryDimensions(IR::Block& block, IR::Inst& inst) {
const auto it{IR::Block::InstructionList::s_iterator_to(inst)};
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
const IR::U1 is_scaled{ir.IsTextureScaled(ir.Imm32(info.descriptor_index))};
switch (info.type) {
case TextureType::Color2D:
case TextureType::ColorArray2D: {
const IR::Value new_inst{&*block.PrependNewInst(it, inst)};
const IR::U32 width{DownScale(ir, is_scaled, IR::U32{ir.CompositeExtract(new_inst, 0)})};
const IR::U32 height{DownScale(ir, is_scaled, IR::U32{ir.CompositeExtract(new_inst, 1)})};
const IR::Value replacement{ir.CompositeConstruct(
width, height, ir.CompositeExtract(new_inst, 2), ir.CompositeExtract(new_inst, 3))};
inst.ReplaceUsesWith(replacement);
break;
}
case TextureType::Color1D:
case TextureType::ColorArray1D:
case TextureType::Color3D:
case TextureType::ColorCube:
case TextureType::ColorArrayCube:
case TextureType::Buffer:
// Nothing to patch here
break;
}
}
void ScaleIntegerCoord(IR::IREmitter& ir, IR::Inst& inst, const IR::U1& is_scaled) {
const auto info{inst.Flags<IR::TextureInstInfo>()};
const IR::Value coord{inst.Arg(1)};
switch (info.type) {
case TextureType::Color2D: {
const IR::U32 x{Scale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)})};
const IR::U32 y{Scale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)})};
inst.SetArg(1, ir.CompositeConstruct(x, y));
break;
}
case TextureType::ColorArray2D: {
const IR::U32 x{Scale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)})};
const IR::U32 y{Scale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)})};
const IR::U32 z{ir.CompositeExtract(coord, 2)};
inst.SetArg(1, ir.CompositeConstruct(x, y, z));
break;
}
case TextureType::Color1D:
case TextureType::ColorArray1D:
case TextureType::Color3D:
case TextureType::ColorCube:
case TextureType::ColorArrayCube:
case TextureType::Buffer:
// Nothing to patch here
break;
}
}
void SubScaleImageFetch(IR::Block& block, IR::Inst& inst) {
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
const IR::U1 is_scaled{ir.IsTextureScaled(ir.Imm32(info.descriptor_index))};
const IR::Value coord{inst.Arg(1)};
switch (info.type) {
case TextureType::Color2D: {
const IR::U32 x{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)},
IR::Attribute::PositionX)};
const IR::U32 y{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)},
IR::Attribute::PositionY)};
inst.SetArg(1, ir.CompositeConstruct(x, y));
break;
}
case TextureType::ColorArray2D: {
const IR::U32 x{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)},
IR::Attribute::PositionX)};
const IR::U32 y{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)},
IR::Attribute::PositionY)};
const IR::U32 z{ir.CompositeExtract(coord, 2)};
inst.SetArg(1, ir.CompositeConstruct(x, y, z));
break;
}
case TextureType::Color1D:
case TextureType::ColorArray1D:
case TextureType::Color3D:
case TextureType::ColorCube:
case TextureType::ColorArrayCube:
case TextureType::Buffer:
// Nothing to patch here
break;
}
}
void SubScaleImageRead(IR::Block& block, IR::Inst& inst) {
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
const IR::U1 is_scaled{ir.IsImageScaled(ir.Imm32(info.descriptor_index))};
const IR::Value coord{inst.Arg(1)};
switch (info.type) {
case TextureType::Color2D: {
const IR::U32 x{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)},
IR::Attribute::PositionX)};
const IR::U32 y{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)},
IR::Attribute::PositionY)};
inst.SetArg(1, ir.CompositeConstruct(x, y));
break;
}
case TextureType::ColorArray2D: {
const IR::U32 x{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 0)},
IR::Attribute::PositionX)};
const IR::U32 y{SubScale(ir, is_scaled, IR::U32{ir.CompositeExtract(coord, 1)},
IR::Attribute::PositionY)};
const IR::U32 z{ir.CompositeExtract(coord, 2)};
inst.SetArg(1, ir.CompositeConstruct(x, y, z));
break;
}
case TextureType::Color1D:
case TextureType::ColorArray1D:
case TextureType::Color3D:
case TextureType::ColorCube:
case TextureType::ColorArrayCube:
case TextureType::Buffer:
// Nothing to patch here
break;
}
}
void PatchImageFetch(IR::Block& block, IR::Inst& inst) {
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
const IR::U1 is_scaled{ir.IsTextureScaled(ir.Imm32(info.descriptor_index))};
ScaleIntegerCoord(ir, inst, is_scaled);
}
void PatchImageRead(IR::Block& block, IR::Inst& inst) {
IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)};
const auto info{inst.Flags<IR::TextureInstInfo>()};
const IR::U1 is_scaled{ir.IsImageScaled(ir.Imm32(info.descriptor_index))};
ScaleIntegerCoord(ir, inst, is_scaled);
}
void Visit(const IR::Program& program, IR::Block& block, IR::Inst& inst) {
const bool is_fragment_shader{program.stage == Stage::Fragment};
switch (inst.GetOpcode()) {
case IR::Opcode::GetAttribute: {
const IR::Attribute attr{inst.Arg(0).Attribute()};
switch (attr) {
case IR::Attribute::PositionX:
case IR::Attribute::PositionY:
if (is_fragment_shader) {
PatchFragCoord(block, inst);
}
break;
default:
break;
}
break;
}
case IR::Opcode::ImageQueryDimensions:
if (program.stage == Stage::Compute) {
PatchImageQueryDimensions(block, inst);
}
break;
case IR::Opcode::ImageFetch:
if (is_fragment_shader) {
SubScaleImageFetch(block, inst);
} else if (program.stage == Stage::Compute) {
PatchImageFetch(block, inst);
}
break;
case IR::Opcode::ImageRead:
if (is_fragment_shader) {
SubScaleImageRead(block, inst);
} else if (program.stage == Stage::Compute) {
PatchImageRead(block, inst);
}
break;
default:
break;
}
}
} // Anonymous namespace
void RescalingPass(IR::Program& program) {
for (IR::Block* const block : program.post_order_blocks) {
for (IR::Inst& inst : block->Instructions()) {
Visit(program, *block, inst);
}
}
}
} // namespace Shader::Optimization
|
