1 /*
2 * Copyright 2019 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "src/gpu/GrSPIRVUniformHandler.h"
9
10 #include "src/gpu/glsl/GrGLSLProgramBuilder.h"
11
GrSPIRVUniformHandler(GrGLSLProgramBuilder * program)12 GrSPIRVUniformHandler::GrSPIRVUniformHandler(GrGLSLProgramBuilder* program)
13 : INHERITED(program)
14 , fUniforms(kUniformsPerBlock)
15 , fSamplers(kUniformsPerBlock)
16 , fTextures(kUniformsPerBlock)
17 {
18 }
19
getUniformVariable(UniformHandle u) const20 const GrShaderVar& GrSPIRVUniformHandler::getUniformVariable(UniformHandle u) const {
21 return fUniforms.item(u.toIndex()).fVariable;
22 }
23
getUniformCStr(UniformHandle u) const24 const char* GrSPIRVUniformHandler::getUniformCStr(UniformHandle u) const {
25 return fUniforms.item(u.toIndex()).fVariable.getName().c_str();
26 }
27
28 // FIXME: this code was ripped from GrVkUniformHandler; should be refactored.
29 namespace {
30
grsltype_to_alignment_mask(GrSLType type)31 uint32_t grsltype_to_alignment_mask(GrSLType type) {
32 switch(type) {
33 case kByte_GrSLType: // fall through
34 case kUByte_GrSLType:
35 return 0x0;
36 case kByte2_GrSLType: // fall through
37 case kUByte2_GrSLType:
38 return 0x1;
39 case kByte3_GrSLType: // fall through
40 case kByte4_GrSLType:
41 case kUByte3_GrSLType:
42 case kUByte4_GrSLType:
43 return 0x3;
44 case kShort_GrSLType: // fall through
45 case kUShort_GrSLType:
46 return 0x1;
47 case kShort2_GrSLType: // fall through
48 case kUShort2_GrSLType:
49 return 0x3;
50 case kShort3_GrSLType: // fall through
51 case kShort4_GrSLType:
52 case kUShort3_GrSLType:
53 case kUShort4_GrSLType:
54 return 0x7;
55 case kInt_GrSLType:
56 case kUint_GrSLType:
57 return 0x3;
58 case kHalf_GrSLType: // fall through
59 case kFloat_GrSLType:
60 return 0x3;
61 case kHalf2_GrSLType: // fall through
62 case kFloat2_GrSLType:
63 return 0x7;
64 case kHalf3_GrSLType: // fall through
65 case kFloat3_GrSLType:
66 return 0xF;
67 case kHalf4_GrSLType: // fall through
68 case kFloat4_GrSLType:
69 return 0xF;
70 case kUint2_GrSLType:
71 return 0x7;
72 case kInt2_GrSLType:
73 return 0x7;
74 case kInt3_GrSLType:
75 return 0xF;
76 case kInt4_GrSLType:
77 return 0xF;
78 case kHalf2x2_GrSLType: // fall through
79 case kFloat2x2_GrSLType:
80 return 0x7;
81 case kHalf3x3_GrSLType: // fall through
82 case kFloat3x3_GrSLType:
83 return 0xF;
84 case kHalf4x4_GrSLType: // fall through
85 case kFloat4x4_GrSLType:
86 return 0xF;
87
88 // This query is only valid for certain types.
89 case kVoid_GrSLType:
90 case kBool_GrSLType:
91 case kTexture2DSampler_GrSLType:
92 case kTextureExternalSampler_GrSLType:
93 case kTexture2DRectSampler_GrSLType:
94 case kTexture2D_GrSLType:
95 case kSampler_GrSLType:
96 case kInput_GrSLType:
97 break;
98 }
99 SK_ABORT("Unexpected type");
100 }
101
grsltype_to_size(GrSLType type)102 static inline uint32_t grsltype_to_size(GrSLType type) {
103 switch(type) {
104 case kByte_GrSLType:
105 case kUByte_GrSLType:
106 return 1;
107 case kByte2_GrSLType:
108 case kUByte2_GrSLType:
109 return 2;
110 case kByte3_GrSLType:
111 case kUByte3_GrSLType:
112 return 3;
113 case kByte4_GrSLType:
114 case kUByte4_GrSLType:
115 return 4;
116 case kShort_GrSLType:
117 return sizeof(int16_t);
118 case kShort2_GrSLType:
119 return 2 * sizeof(int16_t);
120 case kShort3_GrSLType:
121 return 3 * sizeof(int16_t);
122 case kShort4_GrSLType:
123 return 4 * sizeof(int16_t);
124 case kUShort_GrSLType:
125 return sizeof(uint16_t);
126 case kUShort2_GrSLType:
127 return 2 * sizeof(uint16_t);
128 case kUShort3_GrSLType:
129 return 3 * sizeof(uint16_t);
130 case kUShort4_GrSLType:
131 return 4 * sizeof(uint16_t);
132 case kInt_GrSLType:
133 return sizeof(int32_t);
134 case kUint_GrSLType:
135 return sizeof(int32_t);
136 case kHalf_GrSLType: // fall through
137 case kFloat_GrSLType:
138 return sizeof(float);
139 case kHalf2_GrSLType: // fall through
140 case kFloat2_GrSLType:
141 return 2 * sizeof(float);
142 case kHalf3_GrSLType: // fall through
143 case kFloat3_GrSLType:
144 return 3 * sizeof(float);
145 case kHalf4_GrSLType: // fall through
146 case kFloat4_GrSLType:
147 return 4 * sizeof(float);
148 case kUint2_GrSLType:
149 return 2 * sizeof(uint32_t);
150 case kInt2_GrSLType:
151 return 2 * sizeof(int32_t);
152 case kInt3_GrSLType:
153 return 3 * sizeof(int32_t);
154 case kInt4_GrSLType:
155 return 4 * sizeof(int32_t);
156 case kHalf2x2_GrSLType: // fall through
157 case kFloat2x2_GrSLType:
158 //TODO: this will be 4 * szof(float) on std430.
159 return 8 * sizeof(float);
160 case kHalf3x3_GrSLType: // fall through
161 case kFloat3x3_GrSLType:
162 return 12 * sizeof(float);
163 case kHalf4x4_GrSLType: // fall through
164 case kFloat4x4_GrSLType:
165 return 16 * sizeof(float);
166
167 // This query is only valid for certain types.
168 case kVoid_GrSLType:
169 case kBool_GrSLType:
170 case kTexture2DSampler_GrSLType:
171 case kTextureExternalSampler_GrSLType:
172 case kTexture2DRectSampler_GrSLType:
173 case kTexture2D_GrSLType:
174 case kSampler_GrSLType:
175 case kInput_GrSLType:
176 break;
177 }
178 SK_ABORT("Unexpected type");
179 }
180
get_ubo_offset(uint32_t * currentOffset,GrSLType type,int arrayCount)181 uint32_t get_ubo_offset(uint32_t* currentOffset, GrSLType type, int arrayCount) {
182 uint32_t alignmentMask = grsltype_to_alignment_mask(type);
183 // We want to use the std140 layout here, so we must make arrays align to 16 bytes.
184 if (arrayCount || type == kFloat2x2_GrSLType) {
185 alignmentMask = 0xF;
186 }
187 uint32_t offsetDiff = *currentOffset & alignmentMask;
188 if (offsetDiff != 0) {
189 offsetDiff = alignmentMask - offsetDiff + 1;
190 }
191 uint32_t uniformOffset = *currentOffset + offsetDiff;
192 SkASSERT(sizeof(float) == 4);
193 if (arrayCount) {
194 uint32_t elementSize = std::max<uint32_t>(16, grsltype_to_size(type));
195 SkASSERT(0 == (elementSize & 0xF));
196 *currentOffset = uniformOffset + elementSize * arrayCount;
197 } else {
198 *currentOffset = uniformOffset + grsltype_to_size(type);
199 }
200 return uniformOffset;
201 }
202
203 } // namespace
204
internalAddUniformArray(const GrFragmentProcessor * owner,uint32_t visibility,GrSLType type,const char * name,bool mangleName,int arrayCount,const char ** outName)205 GrGLSLUniformHandler::UniformHandle GrSPIRVUniformHandler::internalAddUniformArray(
206 const GrFragmentProcessor* owner,
207 uint32_t visibility,
208 GrSLType type,
209 const char* name,
210 bool mangleName,
211 int arrayCount,
212 const char** outName) {
213 char prefix = 'u';
214 if ('u' == name[0] || !strncmp(name, GR_NO_MANGLE_PREFIX, strlen(GR_NO_MANGLE_PREFIX))) {
215 prefix = '\0';
216 }
217 SkString resolvedName = fProgramBuilder->nameVariable(prefix, name, mangleName);
218
219 int offset = get_ubo_offset(&fCurrentUBOOffset, type, arrayCount);
220 SkString layoutQualifier;
221 layoutQualifier.appendf("offset = %d", offset);
222
223 UniformInfo& info = fUniforms.push_back(SPIRVUniformInfo{
224 {
225 GrShaderVar{std::move(resolvedName), type, GrShaderVar::TypeModifier::None, arrayCount,
226 std::move(layoutQualifier), SkString()},
227 visibility, owner, SkString(name)
228 },
229 offset
230 });
231
232 if (outName) {
233 *outName = info.fVariable.c_str();
234 }
235 return GrGLSLUniformHandler::UniformHandle(fUniforms.count() - 1);
236 }
237
addSampler(const GrBackendFormat &,GrSamplerState,const GrSwizzle & swizzle,const char * name,const GrShaderCaps * caps)238 GrGLSLUniformHandler::SamplerHandle GrSPIRVUniformHandler::addSampler(const GrBackendFormat&,
239 GrSamplerState,
240 const GrSwizzle& swizzle,
241 const char* name,
242 const GrShaderCaps* caps) {
243 int binding = fSamplers.count() * 2;
244
245 SkString mangleName = fProgramBuilder->nameVariable('s', name, /*mangle=*/true);
246 SkString layoutQualifier;
247 layoutQualifier.appendf("set = %d, binding = %d", kSamplerTextureDescriptorSet, binding);
248 SPIRVUniformInfo& info = fSamplers.push_back(SPIRVUniformInfo{
249 {
250 GrShaderVar{std::move(mangleName), kSampler_GrSLType,
251 GrShaderVar::TypeModifier::Uniform, GrShaderVar::kNonArray,
252 std::move(layoutQualifier), SkString()},
253 kFragment_GrShaderFlag, nullptr, SkString(name)
254 },
255 0
256 });
257
258 fSamplerSwizzles.push_back(swizzle);
259 SkASSERT(fSamplerSwizzles.count() == fSamplers.count());
260
261 SkString mangleTexName = fProgramBuilder->nameVariable('t', name, /*mangle=*/true);
262 SkString texLayoutQualifier;
263 texLayoutQualifier.appendf("set = %d, binding = %d", kSamplerTextureDescriptorSet, binding + 1);
264 UniformInfo& texInfo = fTextures.push_back(SPIRVUniformInfo{
265 {
266 GrShaderVar{std::move(mangleTexName), kTexture2D_GrSLType,
267 GrShaderVar::TypeModifier::Uniform, GrShaderVar::kNonArray,
268 std::move(texLayoutQualifier), SkString()},
269 kFragment_GrShaderFlag, nullptr, SkString(name)
270 },
271 0
272 });
273
274 SkString reference;
275 reference.printf("makeSampler2D(%s, %s)", texInfo.fVariable.getName().c_str(),
276 info.fVariable.getName().c_str());
277 fSamplerReferences.emplace_back(std::move(reference));
278 return GrGLSLUniformHandler::SamplerHandle(fSamplers.count() - 1);
279 }
280
samplerVariable(GrGLSLUniformHandler::SamplerHandle handle) const281 const char* GrSPIRVUniformHandler::samplerVariable(
282 GrGLSLUniformHandler::SamplerHandle handle) const {
283 return fSamplerReferences[handle.toIndex()].c_str();
284 }
285
samplerSwizzle(GrGLSLUniformHandler::SamplerHandle handle) const286 GrSwizzle GrSPIRVUniformHandler::samplerSwizzle(GrGLSLUniformHandler::SamplerHandle handle) const {
287 return fSamplerSwizzles[handle.toIndex()];
288 }
289
appendUniformDecls(GrShaderFlags visibility,SkString * out) const290 void GrSPIRVUniformHandler::appendUniformDecls(GrShaderFlags visibility, SkString* out) const {
291 auto textures = fTextures.items().begin();
292 for (const SPIRVUniformInfo& sampler : fSamplers.items()) {
293 if (sampler.fVisibility & visibility) {
294 sampler.fVariable.appendDecl(fProgramBuilder->shaderCaps(), out);
295 out->append(";\n");
296 (*textures).fVariable.appendDecl(fProgramBuilder->shaderCaps(), out);
297 out->append(";\n");
298 }
299 ++textures;
300 }
301 SkString uniformsString;
302 for (const UniformInfo& uniform : fUniforms.items()) {
303 if (uniform.fVisibility & visibility) {
304 uniform.fVariable.appendDecl(fProgramBuilder->shaderCaps(), &uniformsString);
305 uniformsString.append(";\n");
306 }
307 }
308 if (!uniformsString.isEmpty()) {
309 out->appendf("layout (set = %d, binding = %d) uniform UniformBuffer\n{\n",
310 kUniformDescriptorSet, kUniformBinding);
311 out->appendf("%s\n};\n", uniformsString.c_str());
312 }
313 }
314
getRTHeightOffset() const315 uint32_t GrSPIRVUniformHandler::getRTHeightOffset() const {
316 uint32_t dummy = fCurrentUBOOffset;
317 return get_ubo_offset(&dummy, kFloat_GrSLType, 0);
318 }
319