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1 /* | |
2 * Copyright 2016 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 "SkSLSPIRVCodeGenerator.h" | |
9 | |
10 #include "string.h" | |
11 | |
12 #include "GLSL.std.450.h" | |
13 | |
14 #include "ir/SkSLExpressionStatement.h" | |
15 #include "ir/SkSLExtension.h" | |
16 #include "ir/SkSLIndexExpression.h" | |
17 #include "ir/SkSLVariableReference.h" | |
18 | |
19 namespace SkSL { | |
20 | |
21 #define SPIRV_DEBUG 0 | |
22 | |
23 static const int32_t SKSL_MAGIC = 0x0; // FIXME: we should probably register a magic number | |
24 | |
25 void SPIRVCodeGenerator::setupIntrinsics() { | |
26 #define ALL_GLSL(x) std::make_tuple(kGLSL_STD_450_IntrinsicKind, GLSLstd450 ## x , GLSLstd450 ## x, \ | |
27 GLSLstd450 ## x, GLSLstd450 ## x) | |
28 #define BY_TYPE_GLSL(ifFloat, ifInt, ifUInt) std::make_tuple(kGLSL_STD_450_Intri nsicKind, \ | |
29 GLSLstd450 ## ifFlo at, \ | |
30 GLSLstd450 ## ifInt , \ | |
31 GLSLstd450 ## ifUIn t, \ | |
32 SpvOpUndef) | |
33 #define SPECIAL(x) std::make_tuple(kSpecial_IntrinsicKind, k ## x ## _SpecialInt rinsic, \ | |
34 k ## x ## _SpecialIntrinsic, k ## x ## _Speci alIntrinsic, \ | |
35 k ## x ## _SpecialIntrinsic) | |
36 fIntrinsicMap["round"] = ALL_GLSL(Round); | |
37 fIntrinsicMap["roundEven"] = ALL_GLSL(RoundEven); | |
38 fIntrinsicMap["trunc"] = ALL_GLSL(Trunc); | |
39 fIntrinsicMap["abs"] = BY_TYPE_GLSL(FAbs, SAbs, SAbs); | |
40 fIntrinsicMap["sign"] = BY_TYPE_GLSL(FSign, SSign, SSign); | |
41 fIntrinsicMap["floor"] = ALL_GLSL(Floor); | |
42 fIntrinsicMap["ceil"] = ALL_GLSL(Ceil); | |
43 fIntrinsicMap["fract"] = ALL_GLSL(Fract); | |
44 fIntrinsicMap["radians"] = ALL_GLSL(Radians); | |
45 fIntrinsicMap["degrees"] = ALL_GLSL(Degrees); | |
46 fIntrinsicMap["sin"] = ALL_GLSL(Sin); | |
47 fIntrinsicMap["cos"] = ALL_GLSL(Cos); | |
48 fIntrinsicMap["tan"] = ALL_GLSL(Tan); | |
49 fIntrinsicMap["asin"] = ALL_GLSL(Asin); | |
50 fIntrinsicMap["acos"] = ALL_GLSL(Acos); | |
51 fIntrinsicMap["atan"] = SPECIAL(Atan); | |
52 fIntrinsicMap["sinh"] = ALL_GLSL(Sinh); | |
53 fIntrinsicMap["cosh"] = ALL_GLSL(Cosh); | |
54 fIntrinsicMap["tanh"] = ALL_GLSL(Tanh); | |
55 fIntrinsicMap["asinh"] = ALL_GLSL(Asinh); | |
56 fIntrinsicMap["acosh"] = ALL_GLSL(Acosh); | |
57 fIntrinsicMap["atanh"] = ALL_GLSL(Atanh); | |
58 fIntrinsicMap["pow"] = ALL_GLSL(Pow); | |
59 fIntrinsicMap["exp"] = ALL_GLSL(Exp); | |
60 fIntrinsicMap["log"] = ALL_GLSL(Log); | |
61 fIntrinsicMap["exp2"] = ALL_GLSL(Exp2); | |
62 fIntrinsicMap["log2"] = ALL_GLSL(Log2); | |
63 fIntrinsicMap["sqrt"] = ALL_GLSL(Sqrt); | |
64 fIntrinsicMap["inversesqrt"] = ALL_GLSL(InverseSqrt); | |
65 fIntrinsicMap["determinant"] = ALL_GLSL(Determinant); | |
66 fIntrinsicMap["matrixInverse"] = ALL_GLSL(MatrixInverse); | |
67 fIntrinsicMap["mod"] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOp FMod, SpvOpSMod, | |
68 SpvOpUMod, SpvOpUndef); | |
69 fIntrinsicMap["min"] = BY_TYPE_GLSL(FMin, SMin, UMin); | |
70 fIntrinsicMap["max"] = BY_TYPE_GLSL(FMax, SMax, UMax); | |
71 fIntrinsicMap["clamp"] = BY_TYPE_GLSL(FClamp, SClamp, UClamp); | |
72 fIntrinsicMap["dot"] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOp Dot, SpvOpUndef, | |
73 SpvOpUndef, SpvOpUndef); | |
74 fIntrinsicMap["mix"] = ALL_GLSL(FMix); | |
75 fIntrinsicMap["step"] = ALL_GLSL(Step); | |
76 fIntrinsicMap["smoothstep"] = ALL_GLSL(SmoothStep); | |
77 fIntrinsicMap["fma"] = ALL_GLSL(Fma); | |
78 fIntrinsicMap["frexp"] = ALL_GLSL(Frexp); | |
79 fIntrinsicMap["ldexp"] = ALL_GLSL(Ldexp); | |
80 | |
81 #define PACK(type) fIntrinsicMap["pack" #type] = ALL_GLSL(Pack ## type); \ | |
82 fIntrinsicMap["unpack" #type] = ALL_GLSL(Unpack ## type) | |
83 PACK(Snorm4x8); | |
84 PACK(Unorm4x8); | |
85 PACK(Snorm2x16); | |
86 PACK(Unorm2x16); | |
87 PACK(Half2x16); | |
88 PACK(Double2x32); | |
89 fIntrinsicMap["length"] = ALL_GLSL(Length); | |
90 fIntrinsicMap["distance"] = ALL_GLSL(Distance); | |
91 fIntrinsicMap["cross"] = ALL_GLSL(Cross); | |
92 fIntrinsicMap["normalize"] = ALL_GLSL(Normalize); | |
93 fIntrinsicMap["faceForward"] = ALL_GLSL(FaceForward); | |
94 fIntrinsicMap["reflect"] = ALL_GLSL(Reflect); | |
95 fIntrinsicMap["refract"] = ALL_GLSL(Refract); | |
96 fIntrinsicMap["findLSB"] = ALL_GLSL(FindILsb); | |
97 fIntrinsicMap["findMSB"] = BY_TYPE_GLSL(FindSMsb, FindSMsb, FindUMsb); | |
98 fIntrinsicMap["dFdx"] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpDP dx, SpvOpUndef, | |
99 SpvOpUndef, SpvOpUndef); | |
100 fIntrinsicMap["dFdy"] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpDP dy, SpvOpUndef, | |
101 SpvOpUndef, SpvOpUndef); | |
102 fIntrinsicMap["dFdy"] = std::make_tuple(kSPIRV_IntrinsicKind, SpvOpDP dy, SpvOpUndef, | |
103 SpvOpUndef, SpvOpUndef); | |
104 fIntrinsicMap["texture"] = SPECIAL(Texture); | |
105 fIntrinsicMap["texture2D"] = SPECIAL(Texture2D); | |
106 fIntrinsicMap["textureProj"] = SPECIAL(TextureProj); | |
107 | |
108 fIntrinsicMap["any"] = std::make_tuple(kSPIRV_IntrinsicKind, Sp vOpUndef, | |
109 SpvOpUndef, SpvOpUndef, SpvOpAny); | |
110 fIntrinsicMap["all"] = std::make_tuple(kSPIRV_IntrinsicKind, Sp vOpUndef, | |
111 SpvOpUndef, SpvOpUndef, SpvOpAll); | |
112 fIntrinsicMap["equal"] = std::make_tuple(kSPIRV_IntrinsicKind, Sp vOpFOrdEqual, | |
113 SpvOpIEqual, SpvOpIEqual , | |
114 SpvOpLogicalEqual); | |
115 fIntrinsicMap["notEqual"] = std::make_tuple(kSPIRV_IntrinsicKind, Sp vOpFOrdNotEqual, | |
116 SpvOpINotEqual, SpvOpINo tEqual, | |
117 SpvOpLogicalNotEqual); | |
118 fIntrinsicMap["lessThan"] = std::make_tuple(kSPIRV_IntrinsicKind, Sp vOpSLessThan, | |
119 SpvOpULessThan, SpvOpFOr dLessThan, | |
120 SpvOpUndef); | |
121 fIntrinsicMap["lessThanEqual"] = std::make_tuple(kSPIRV_IntrinsicKind, Sp vOpSLessThanEqual, | |
122 SpvOpULessThanEqual, Spv OpFOrdLessThanEqual, | |
123 SpvOpUndef); | |
124 fIntrinsicMap["greaterThan"] = std::make_tuple(kSPIRV_IntrinsicKind, Sp vOpSGreaterThan, | |
125 SpvOpUGreaterThan, SpvOp FOrdGreaterThan, | |
126 SpvOpUndef); | |
127 fIntrinsicMap["greaterThanEqual"] = std::make_tuple(kSPIRV_IntrinsicKind, | |
128 SpvOpSGreaterThanEqual, | |
129 SpvOpUGreaterThanEqual, | |
130 SpvOpFOrdGreaterThanEqua l, | |
131 SpvOpUndef); | |
132 | |
133 // interpolateAt* not yet supported... | |
134 } | |
135 | |
136 void SPIRVCodeGenerator::writeWord(int32_t word, std::ostream& out) { | |
137 #if SPIRV_DEBUG | |
138 out << "(" << word << ") "; | |
139 #else | |
140 out.write((const char*) &word, sizeof(word)); | |
141 #endif | |
142 } | |
143 | |
144 static bool is_float(const Type& type) { | |
145 if (type.kind() == Type::kVector_Kind) { | |
146 return is_float(*type.componentType()); | |
147 } | |
148 return type == *kFloat_Type || type == *kDouble_Type; | |
149 } | |
150 | |
151 static bool is_signed(const Type& type) { | |
152 if (type.kind() == Type::kVector_Kind) { | |
153 return is_signed(*type.componentType()); | |
154 } | |
155 return type == *kInt_Type; | |
156 } | |
157 | |
158 static bool is_unsigned(const Type& type) { | |
159 if (type.kind() == Type::kVector_Kind) { | |
160 return is_unsigned(*type.componentType()); | |
161 } | |
162 return type == *kUInt_Type; | |
163 } | |
164 | |
165 static bool is_bool(const Type& type) { | |
166 if (type.kind() == Type::kVector_Kind) { | |
167 return is_bool(*type.componentType()); | |
168 } | |
169 return type == *kBool_Type; | |
170 } | |
171 | |
172 static bool is_out(std::shared_ptr<Variable> var) { | |
173 return (var->fModifiers.fFlags & Modifiers::kOut_Flag) != 0; | |
174 } | |
175 | |
176 #if SPIRV_DEBUG | |
177 static std::string opcode_text(SpvOp_ opCode) { | |
178 switch (opCode) { | |
179 case SpvOpNop: | |
180 return "Nop"; | |
181 case SpvOpUndef: | |
182 return "Undef"; | |
183 case SpvOpSourceContinued: | |
184 return "SourceContinued"; | |
185 case SpvOpSource: | |
186 return "Source"; | |
187 case SpvOpSourceExtension: | |
188 return "SourceExtension"; | |
189 case SpvOpName: | |
190 return "Name"; | |
191 case SpvOpMemberName: | |
192 return "MemberName"; | |
193 case SpvOpString: | |
194 return "String"; | |
195 case SpvOpLine: | |
196 return "Line"; | |
197 case SpvOpExtension: | |
198 return "Extension"; | |
199 case SpvOpExtInstImport: | |
200 return "ExtInstImport"; | |
201 case SpvOpExtInst: | |
202 return "ExtInst"; | |
203 case SpvOpMemoryModel: | |
204 return "MemoryModel"; | |
205 case SpvOpEntryPoint: | |
206 return "EntryPoint"; | |
207 case SpvOpExecutionMode: | |
208 return "ExecutionMode"; | |
209 case SpvOpCapability: | |
210 return "Capability"; | |
211 case SpvOpTypeVoid: | |
212 return "TypeVoid"; | |
213 case SpvOpTypeBool: | |
214 return "TypeBool"; | |
215 case SpvOpTypeInt: | |
216 return "TypeInt"; | |
217 case SpvOpTypeFloat: | |
218 return "TypeFloat"; | |
219 case SpvOpTypeVector: | |
220 return "TypeVector"; | |
221 case SpvOpTypeMatrix: | |
222 return "TypeMatrix"; | |
223 case SpvOpTypeImage: | |
224 return "TypeImage"; | |
225 case SpvOpTypeSampler: | |
226 return "TypeSampler"; | |
227 case SpvOpTypeSampledImage: | |
228 return "TypeSampledImage"; | |
229 case SpvOpTypeArray: | |
230 return "TypeArray"; | |
231 case SpvOpTypeRuntimeArray: | |
232 return "TypeRuntimeArray"; | |
233 case SpvOpTypeStruct: | |
234 return "TypeStruct"; | |
235 case SpvOpTypeOpaque: | |
236 return "TypeOpaque"; | |
237 case SpvOpTypePointer: | |
238 return "TypePointer"; | |
239 case SpvOpTypeFunction: | |
240 return "TypeFunction"; | |
241 case SpvOpTypeEvent: | |
242 return "TypeEvent"; | |
243 case SpvOpTypeDeviceEvent: | |
244 return "TypeDeviceEvent"; | |
245 case SpvOpTypeReserveId: | |
246 return "TypeReserveId"; | |
247 case SpvOpTypeQueue: | |
248 return "TypeQueue"; | |
249 case SpvOpTypePipe: | |
250 return "TypePipe"; | |
251 case SpvOpTypeForwardPointer: | |
252 return "TypeForwardPointer"; | |
253 case SpvOpConstantTrue: | |
254 return "ConstantTrue"; | |
255 case SpvOpConstantFalse: | |
256 return "ConstantFalse"; | |
257 case SpvOpConstant: | |
258 return "Constant"; | |
259 case SpvOpConstantComposite: | |
260 return "ConstantComposite"; | |
261 case SpvOpConstantSampler: | |
262 return "ConstantSampler"; | |
263 case SpvOpConstantNull: | |
264 return "ConstantNull"; | |
265 case SpvOpSpecConstantTrue: | |
266 return "SpecConstantTrue"; | |
267 case SpvOpSpecConstantFalse: | |
268 return "SpecConstantFalse"; | |
269 case SpvOpSpecConstant: | |
270 return "SpecConstant"; | |
271 case SpvOpSpecConstantComposite: | |
272 return "SpecConstantComposite"; | |
273 case SpvOpSpecConstantOp: | |
274 return "SpecConstantOp"; | |
275 case SpvOpFunction: | |
276 return "Function"; | |
277 case SpvOpFunctionParameter: | |
278 return "FunctionParameter"; | |
279 case SpvOpFunctionEnd: | |
280 return "FunctionEnd"; | |
281 case SpvOpFunctionCall: | |
282 return "FunctionCall"; | |
283 case SpvOpVariable: | |
284 return "Variable"; | |
285 case SpvOpImageTexelPointer: | |
286 return "ImageTexelPointer"; | |
287 case SpvOpLoad: | |
288 return "Load"; | |
289 case SpvOpStore: | |
290 return "Store"; | |
291 case SpvOpCopyMemory: | |
292 return "CopyMemory"; | |
293 case SpvOpCopyMemorySized: | |
294 return "CopyMemorySized"; | |
295 case SpvOpAccessChain: | |
296 return "AccessChain"; | |
297 case SpvOpInBoundsAccessChain: | |
298 return "InBoundsAccessChain"; | |
299 case SpvOpPtrAccessChain: | |
300 return "PtrAccessChain"; | |
301 case SpvOpArrayLength: | |
302 return "ArrayLength"; | |
303 case SpvOpGenericPtrMemSemantics: | |
304 return "GenericPtrMemSemantics"; | |
305 case SpvOpInBoundsPtrAccessChain: | |
306 return "InBoundsPtrAccessChain"; | |
307 case SpvOpDecorate: | |
308 return "Decorate"; | |
309 case SpvOpMemberDecorate: | |
310 return "MemberDecorate"; | |
311 case SpvOpDecorationGroup: | |
312 return "DecorationGroup"; | |
313 case SpvOpGroupDecorate: | |
314 return "GroupDecorate"; | |
315 case SpvOpGroupMemberDecorate: | |
316 return "GroupMemberDecorate"; | |
317 case SpvOpVectorExtractDynamic: | |
318 return "VectorExtractDynamic"; | |
319 case SpvOpVectorInsertDynamic: | |
320 return "VectorInsertDynamic"; | |
321 case SpvOpVectorShuffle: | |
322 return "VectorShuffle"; | |
323 case SpvOpCompositeConstruct: | |
324 return "CompositeConstruct"; | |
325 case SpvOpCompositeExtract: | |
326 return "CompositeExtract"; | |
327 case SpvOpCompositeInsert: | |
328 return "CompositeInsert"; | |
329 case SpvOpCopyObject: | |
330 return "CopyObject"; | |
331 case SpvOpTranspose: | |
332 return "Transpose"; | |
333 case SpvOpSampledImage: | |
334 return "SampledImage"; | |
335 case SpvOpImageSampleImplicitLod: | |
336 return "ImageSampleImplicitLod"; | |
337 case SpvOpImageSampleExplicitLod: | |
338 return "ImageSampleExplicitLod"; | |
339 case SpvOpImageSampleDrefImplicitLod: | |
340 return "ImageSampleDrefImplicitLod"; | |
341 case SpvOpImageSampleDrefExplicitLod: | |
342 return "ImageSampleDrefExplicitLod"; | |
343 case SpvOpImageSampleProjImplicitLod: | |
344 return "ImageSampleProjImplicitLod"; | |
345 case SpvOpImageSampleProjExplicitLod: | |
346 return "ImageSampleProjExplicitLod"; | |
347 case SpvOpImageSampleProjDrefImplicitLod: | |
348 return "ImageSampleProjDrefImplicitLod"; | |
349 case SpvOpImageSampleProjDrefExplicitLod: | |
350 return "ImageSampleProjDrefExplicitLod"; | |
351 case SpvOpImageFetch: | |
352 return "ImageFetch"; | |
353 case SpvOpImageGather: | |
354 return "ImageGather"; | |
355 case SpvOpImageDrefGather: | |
356 return "ImageDrefGather"; | |
357 case SpvOpImageRead: | |
358 return "ImageRead"; | |
359 case SpvOpImageWrite: | |
360 return "ImageWrite"; | |
361 case SpvOpImage: | |
362 return "Image"; | |
363 case SpvOpImageQueryFormat: | |
364 return "ImageQueryFormat"; | |
365 case SpvOpImageQueryOrder: | |
366 return "ImageQueryOrder"; | |
367 case SpvOpImageQuerySizeLod: | |
368 return "ImageQuerySizeLod"; | |
369 case SpvOpImageQuerySize: | |
370 return "ImageQuerySize"; | |
371 case SpvOpImageQueryLod: | |
372 return "ImageQueryLod"; | |
373 case SpvOpImageQueryLevels: | |
374 return "ImageQueryLevels"; | |
375 case SpvOpImageQuerySamples: | |
376 return "ImageQuerySamples"; | |
377 case SpvOpConvertFToU: | |
378 return "ConvertFToU"; | |
379 case SpvOpConvertFToS: | |
380 return "ConvertFToS"; | |
381 case SpvOpConvertSToF: | |
382 return "ConvertSToF"; | |
383 case SpvOpConvertUToF: | |
384 return "ConvertUToF"; | |
385 case SpvOpUConvert: | |
386 return "UConvert"; | |
387 case SpvOpSConvert: | |
388 return "SConvert"; | |
389 case SpvOpFConvert: | |
390 return "FConvert"; | |
391 case SpvOpQuantizeToF16: | |
392 return "QuantizeToF16"; | |
393 case SpvOpConvertPtrToU: | |
394 return "ConvertPtrToU"; | |
395 case SpvOpSatConvertSToU: | |
396 return "SatConvertSToU"; | |
397 case SpvOpSatConvertUToS: | |
398 return "SatConvertUToS"; | |
399 case SpvOpConvertUToPtr: | |
400 return "ConvertUToPtr"; | |
401 case SpvOpPtrCastToGeneric: | |
402 return "PtrCastToGeneric"; | |
403 case SpvOpGenericCastToPtr: | |
404 return "GenericCastToPtr"; | |
405 case SpvOpGenericCastToPtrExplicit: | |
406 return "GenericCastToPtrExplicit"; | |
407 case SpvOpBitcast: | |
408 return "Bitcast"; | |
409 case SpvOpSNegate: | |
410 return "SNegate"; | |
411 case SpvOpFNegate: | |
412 return "FNegate"; | |
413 case SpvOpIAdd: | |
414 return "IAdd"; | |
415 case SpvOpFAdd: | |
416 return "FAdd"; | |
417 case SpvOpISub: | |
418 return "ISub"; | |
419 case SpvOpFSub: | |
420 return "FSub"; | |
421 case SpvOpIMul: | |
422 return "IMul"; | |
423 case SpvOpFMul: | |
424 return "FMul"; | |
425 case SpvOpUDiv: | |
426 return "UDiv"; | |
427 case SpvOpSDiv: | |
428 return "SDiv"; | |
429 case SpvOpFDiv: | |
430 return "FDiv"; | |
431 case SpvOpUMod: | |
432 return "UMod"; | |
433 case SpvOpSRem: | |
434 return "SRem"; | |
435 case SpvOpSMod: | |
436 return "SMod"; | |
437 case SpvOpFRem: | |
438 return "FRem"; | |
439 case SpvOpFMod: | |
440 return "FMod"; | |
441 case SpvOpVectorTimesScalar: | |
442 return "VectorTimesScalar"; | |
443 case SpvOpMatrixTimesScalar: | |
444 return "MatrixTimesScalar"; | |
445 case SpvOpVectorTimesMatrix: | |
446 return "VectorTimesMatrix"; | |
447 case SpvOpMatrixTimesVector: | |
448 return "MatrixTimesVector"; | |
449 case SpvOpMatrixTimesMatrix: | |
450 return "MatrixTimesMatrix"; | |
451 case SpvOpOuterProduct: | |
452 return "OuterProduct"; | |
453 case SpvOpDot: | |
454 return "Dot"; | |
455 case SpvOpIAddCarry: | |
456 return "IAddCarry"; | |
457 case SpvOpISubBorrow: | |
458 return "ISubBorrow"; | |
459 case SpvOpUMulExtended: | |
460 return "UMulExtended"; | |
461 case SpvOpSMulExtended: | |
462 return "SMulExtended"; | |
463 case SpvOpAny: | |
464 return "Any"; | |
465 case SpvOpAll: | |
466 return "All"; | |
467 case SpvOpIsNan: | |
468 return "IsNan"; | |
469 case SpvOpIsInf: | |
470 return "IsInf"; | |
471 case SpvOpIsFinite: | |
472 return "IsFinite"; | |
473 case SpvOpIsNormal: | |
474 return "IsNormal"; | |
475 case SpvOpSignBitSet: | |
476 return "SignBitSet"; | |
477 case SpvOpLessOrGreater: | |
478 return "LessOrGreater"; | |
479 case SpvOpOrdered: | |
480 return "Ordered"; | |
481 case SpvOpUnordered: | |
482 return "Unordered"; | |
483 case SpvOpLogicalEqual: | |
484 return "LogicalEqual"; | |
485 case SpvOpLogicalNotEqual: | |
486 return "LogicalNotEqual"; | |
487 case SpvOpLogicalOr: | |
488 return "LogicalOr"; | |
489 case SpvOpLogicalAnd: | |
490 return "LogicalAnd"; | |
491 case SpvOpLogicalNot: | |
492 return "LogicalNot"; | |
493 case SpvOpSelect: | |
494 return "Select"; | |
495 case SpvOpIEqual: | |
496 return "IEqual"; | |
497 case SpvOpINotEqual: | |
498 return "INotEqual"; | |
499 case SpvOpUGreaterThan: | |
500 return "UGreaterThan"; | |
501 case SpvOpSGreaterThan: | |
502 return "SGreaterThan"; | |
503 case SpvOpUGreaterThanEqual: | |
504 return "UGreaterThanEqual"; | |
505 case SpvOpSGreaterThanEqual: | |
506 return "SGreaterThanEqual"; | |
507 case SpvOpULessThan: | |
508 return "ULessThan"; | |
509 case SpvOpSLessThan: | |
510 return "SLessThan"; | |
511 case SpvOpULessThanEqual: | |
512 return "ULessThanEqual"; | |
513 case SpvOpSLessThanEqual: | |
514 return "SLessThanEqual"; | |
515 case SpvOpFOrdEqual: | |
516 return "FOrdEqual"; | |
517 case SpvOpFUnordEqual: | |
518 return "FUnordEqual"; | |
519 case SpvOpFOrdNotEqual: | |
520 return "FOrdNotEqual"; | |
521 case SpvOpFUnordNotEqual: | |
522 return "FUnordNotEqual"; | |
523 case SpvOpFOrdLessThan: | |
524 return "FOrdLessThan"; | |
525 case SpvOpFUnordLessThan: | |
526 return "FUnordLessThan"; | |
527 case SpvOpFOrdGreaterThan: | |
528 return "FOrdGreaterThan"; | |
529 case SpvOpFUnordGreaterThan: | |
530 return "FUnordGreaterThan"; | |
531 case SpvOpFOrdLessThanEqual: | |
532 return "FOrdLessThanEqual"; | |
533 case SpvOpFUnordLessThanEqual: | |
534 return "FUnordLessThanEqual"; | |
535 case SpvOpFOrdGreaterThanEqual: | |
536 return "FOrdGreaterThanEqual"; | |
537 case SpvOpFUnordGreaterThanEqual: | |
538 return "FUnordGreaterThanEqual"; | |
539 case SpvOpShiftRightLogical: | |
540 return "ShiftRightLogical"; | |
541 case SpvOpShiftRightArithmetic: | |
542 return "ShiftRightArithmetic"; | |
543 case SpvOpShiftLeftLogical: | |
544 return "ShiftLeftLogical"; | |
545 case SpvOpBitwiseOr: | |
546 return "BitwiseOr"; | |
547 case SpvOpBitwiseXor: | |
548 return "BitwiseXor"; | |
549 case SpvOpBitwiseAnd: | |
550 return "BitwiseAnd"; | |
551 case SpvOpNot: | |
552 return "Not"; | |
553 case SpvOpBitFieldInsert: | |
554 return "BitFieldInsert"; | |
555 case SpvOpBitFieldSExtract: | |
556 return "BitFieldSExtract"; | |
557 case SpvOpBitFieldUExtract: | |
558 return "BitFieldUExtract"; | |
559 case SpvOpBitReverse: | |
560 return "BitReverse"; | |
561 case SpvOpBitCount: | |
562 return "BitCount"; | |
563 case SpvOpDPdx: | |
564 return "DPdx"; | |
565 case SpvOpDPdy: | |
566 return "DPdy"; | |
567 case SpvOpFwidth: | |
568 return "Fwidth"; | |
569 case SpvOpDPdxFine: | |
570 return "DPdxFine"; | |
571 case SpvOpDPdyFine: | |
572 return "DPdyFine"; | |
573 case SpvOpFwidthFine: | |
574 return "FwidthFine"; | |
575 case SpvOpDPdxCoarse: | |
576 return "DPdxCoarse"; | |
577 case SpvOpDPdyCoarse: | |
578 return "DPdyCoarse"; | |
579 case SpvOpFwidthCoarse: | |
580 return "FwidthCoarse"; | |
581 case SpvOpEmitVertex: | |
582 return "EmitVertex"; | |
583 case SpvOpEndPrimitive: | |
584 return "EndPrimitive"; | |
585 case SpvOpEmitStreamVertex: | |
586 return "EmitStreamVertex"; | |
587 case SpvOpEndStreamPrimitive: | |
588 return "EndStreamPrimitive"; | |
589 case SpvOpControlBarrier: | |
590 return "ControlBarrier"; | |
591 case SpvOpMemoryBarrier: | |
592 return "MemoryBarrier"; | |
593 case SpvOpAtomicLoad: | |
594 return "AtomicLoad"; | |
595 case SpvOpAtomicStore: | |
596 return "AtomicStore"; | |
597 case SpvOpAtomicExchange: | |
598 return "AtomicExchange"; | |
599 case SpvOpAtomicCompareExchange: | |
600 return "AtomicCompareExchange"; | |
601 case SpvOpAtomicCompareExchangeWeak: | |
602 return "AtomicCompareExchangeWeak"; | |
603 case SpvOpAtomicIIncrement: | |
604 return "AtomicIIncrement"; | |
605 case SpvOpAtomicIDecrement: | |
606 return "AtomicIDecrement"; | |
607 case SpvOpAtomicIAdd: | |
608 return "AtomicIAdd"; | |
609 case SpvOpAtomicISub: | |
610 return "AtomicISub"; | |
611 case SpvOpAtomicSMin: | |
612 return "AtomicSMin"; | |
613 case SpvOpAtomicUMin: | |
614 return "AtomicUMin"; | |
615 case SpvOpAtomicSMax: | |
616 return "AtomicSMax"; | |
617 case SpvOpAtomicUMax: | |
618 return "AtomicUMax"; | |
619 case SpvOpAtomicAnd: | |
620 return "AtomicAnd"; | |
621 case SpvOpAtomicOr: | |
622 return "AtomicOr"; | |
623 case SpvOpAtomicXor: | |
624 return "AtomicXor"; | |
625 case SpvOpPhi: | |
626 return "Phi"; | |
627 case SpvOpLoopMerge: | |
628 return "LoopMerge"; | |
629 case SpvOpSelectionMerge: | |
630 return "SelectionMerge"; | |
631 case SpvOpLabel: | |
632 return "Label"; | |
633 case SpvOpBranch: | |
634 return "Branch"; | |
635 case SpvOpBranchConditional: | |
636 return "BranchConditional"; | |
637 case SpvOpSwitch: | |
638 return "Switch"; | |
639 case SpvOpKill: | |
640 return "Kill"; | |
641 case SpvOpReturn: | |
642 return "Return"; | |
643 case SpvOpReturnValue: | |
644 return "ReturnValue"; | |
645 case SpvOpUnreachable: | |
646 return "Unreachable"; | |
647 case SpvOpLifetimeStart: | |
648 return "LifetimeStart"; | |
649 case SpvOpLifetimeStop: | |
650 return "LifetimeStop"; | |
651 case SpvOpGroupAsyncCopy: | |
652 return "GroupAsyncCopy"; | |
653 case SpvOpGroupWaitEvents: | |
654 return "GroupWaitEvents"; | |
655 case SpvOpGroupAll: | |
656 return "GroupAll"; | |
657 case SpvOpGroupAny: | |
658 return "GroupAny"; | |
659 case SpvOpGroupBroadcast: | |
660 return "GroupBroadcast"; | |
661 case SpvOpGroupIAdd: | |
662 return "GroupIAdd"; | |
663 case SpvOpGroupFAdd: | |
664 return "GroupFAdd"; | |
665 case SpvOpGroupFMin: | |
666 return "GroupFMin"; | |
667 case SpvOpGroupUMin: | |
668 return "GroupUMin"; | |
669 case SpvOpGroupSMin: | |
670 return "GroupSMin"; | |
671 case SpvOpGroupFMax: | |
672 return "GroupFMax"; | |
673 case SpvOpGroupUMax: | |
674 return "GroupUMax"; | |
675 case SpvOpGroupSMax: | |
676 return "GroupSMax"; | |
677 case SpvOpReadPipe: | |
678 return "ReadPipe"; | |
679 case SpvOpWritePipe: | |
680 return "WritePipe"; | |
681 case SpvOpReservedReadPipe: | |
682 return "ReservedReadPipe"; | |
683 case SpvOpReservedWritePipe: | |
684 return "ReservedWritePipe"; | |
685 case SpvOpReserveReadPipePackets: | |
686 return "ReserveReadPipePackets"; | |
687 case SpvOpReserveWritePipePackets: | |
688 return "ReserveWritePipePackets"; | |
689 case SpvOpCommitReadPipe: | |
690 return "CommitReadPipe"; | |
691 case SpvOpCommitWritePipe: | |
692 return "CommitWritePipe"; | |
693 case SpvOpIsValidReserveId: | |
694 return "IsValidReserveId"; | |
695 case SpvOpGetNumPipePackets: | |
696 return "GetNumPipePackets"; | |
697 case SpvOpGetMaxPipePackets: | |
698 return "GetMaxPipePackets"; | |
699 case SpvOpGroupReserveReadPipePackets: | |
700 return "GroupReserveReadPipePackets"; | |
701 case SpvOpGroupReserveWritePipePackets: | |
702 return "GroupReserveWritePipePackets"; | |
703 case SpvOpGroupCommitReadPipe: | |
704 return "GroupCommitReadPipe"; | |
705 case SpvOpGroupCommitWritePipe: | |
706 return "GroupCommitWritePipe"; | |
707 case SpvOpEnqueueMarker: | |
708 return "EnqueueMarker"; | |
709 case SpvOpEnqueueKernel: | |
710 return "EnqueueKernel"; | |
711 case SpvOpGetKernelNDrangeSubGroupCount: | |
712 return "GetKernelNDrangeSubGroupCount"; | |
713 case SpvOpGetKernelNDrangeMaxSubGroupSize: | |
714 return "GetKernelNDrangeMaxSubGroupSize"; | |
715 case SpvOpGetKernelWorkGroupSize: | |
716 return "GetKernelWorkGroupSize"; | |
717 case SpvOpGetKernelPreferredWorkGroupSizeMultiple: | |
718 return "GetKernelPreferredWorkGroupSizeMultiple"; | |
719 case SpvOpRetainEvent: | |
720 return "RetainEvent"; | |
721 case SpvOpReleaseEvent: | |
722 return "ReleaseEvent"; | |
723 case SpvOpCreateUserEvent: | |
724 return "CreateUserEvent"; | |
725 case SpvOpIsValidEvent: | |
726 return "IsValidEvent"; | |
727 case SpvOpSetUserEventStatus: | |
728 return "SetUserEventStatus"; | |
729 case SpvOpCaptureEventProfilingInfo: | |
730 return "CaptureEventProfilingInfo"; | |
731 case SpvOpGetDefaultQueue: | |
732 return "GetDefaultQueue"; | |
733 case SpvOpBuildNDRange: | |
734 return "BuildNDRange"; | |
735 case SpvOpImageSparseSampleImplicitLod: | |
736 return "ImageSparseSampleImplicitLod"; | |
737 case SpvOpImageSparseSampleExplicitLod: | |
738 return "ImageSparseSampleExplicitLod"; | |
739 case SpvOpImageSparseSampleDrefImplicitLod: | |
740 return "ImageSparseSampleDrefImplicitLod"; | |
741 case SpvOpImageSparseSampleDrefExplicitLod: | |
742 return "ImageSparseSampleDrefExplicitLod"; | |
743 case SpvOpImageSparseSampleProjImplicitLod: | |
744 return "ImageSparseSampleProjImplicitLod"; | |
745 case SpvOpImageSparseSampleProjExplicitLod: | |
746 return "ImageSparseSampleProjExplicitLod"; | |
747 case SpvOpImageSparseSampleProjDrefImplicitLod: | |
748 return "ImageSparseSampleProjDrefImplicitLod"; | |
749 case SpvOpImageSparseSampleProjDrefExplicitLod: | |
750 return "ImageSparseSampleProjDrefExplicitLod"; | |
751 case SpvOpImageSparseFetch: | |
752 return "ImageSparseFetch"; | |
753 case SpvOpImageSparseGather: | |
754 return "ImageSparseGather"; | |
755 case SpvOpImageSparseDrefGather: | |
756 return "ImageSparseDrefGather"; | |
757 case SpvOpImageSparseTexelsResident: | |
758 return "ImageSparseTexelsResident"; | |
759 case SpvOpNoLine: | |
760 return "NoLine"; | |
761 case SpvOpAtomicFlagTestAndSet: | |
762 return "AtomicFlagTestAndSet"; | |
763 case SpvOpAtomicFlagClear: | |
764 return "AtomicFlagClear"; | |
765 case SpvOpImageSparseRead: | |
766 return "ImageSparseRead"; | |
767 default: | |
768 ABORT("unsupported SPIR-V op"); | |
769 } | |
770 } | |
771 #endif | |
772 | |
773 void SPIRVCodeGenerator::writeOpCode(SpvOp_ opCode, int length, std::ostream& ou t) { | |
774 ASSERT(opCode != SpvOpUndef); | |
775 switch (opCode) { | |
776 case SpvOpReturn: // fall through | |
777 case SpvOpReturnValue: // fall through | |
778 case SpvOpBranch: // fall through | |
779 case SpvOpBranchConditional: | |
780 ASSERT(fCurrentBlock); | |
781 fCurrentBlock = 0; | |
782 break; | |
783 case SpvOpConstant: // fall through | |
784 case SpvOpConstantTrue: // fall through | |
785 case SpvOpConstantFalse: // fall through | |
786 case SpvOpConstantComposite: // fall through | |
787 case SpvOpTypeVoid: // fall through | |
788 case SpvOpTypeInt: // fall through | |
789 case SpvOpTypeFloat: // fall through | |
790 case SpvOpTypeBool: // fall through | |
791 case SpvOpTypeVector: // fall through | |
792 case SpvOpTypeMatrix: // fall through | |
793 case SpvOpTypeArray: // fall through | |
794 case SpvOpTypePointer: // fall through | |
795 case SpvOpTypeFunction: // fall through | |
796 case SpvOpTypeRuntimeArray: // fall through | |
797 case SpvOpTypeStruct: // fall through | |
798 case SpvOpTypeImage: // fall through | |
799 case SpvOpTypeSampledImage: // fall through | |
800 case SpvOpVariable: // fall through | |
801 case SpvOpFunction: // fall through | |
802 case SpvOpFunctionParameter: // fall through | |
803 case SpvOpFunctionEnd: // fall through | |
804 case SpvOpExecutionMode: // fall through | |
805 case SpvOpMemoryModel: // fall through | |
806 case SpvOpCapability: // fall through | |
807 case SpvOpExtInstImport: // fall through | |
808 case SpvOpEntryPoint: // fall through | |
809 case SpvOpSource: // fall through | |
810 case SpvOpSourceExtension: // fall through | |
811 case SpvOpName: // fall through | |
812 case SpvOpMemberName: // fall through | |
813 case SpvOpDecorate: // fall through | |
814 case SpvOpMemberDecorate: | |
815 break; | |
816 default: | |
817 ASSERT(fCurrentBlock); | |
818 } | |
819 #if SPIRV_DEBUG | |
820 out << std::endl << opcode_text(opCode) << " "; | |
821 #else | |
822 this->writeWord((length << 16) | opCode, out); | |
823 #endif | |
824 } | |
825 | |
826 void SPIRVCodeGenerator::writeLabel(SpvId label, std::ostream& out) { | |
827 fCurrentBlock = label; | |
828 this->writeInstruction(SpvOpLabel, label, out); | |
829 } | |
830 | |
831 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, std::ostream& out) { | |
832 this->writeOpCode(opCode, 1, out); | |
833 } | |
834 | |
835 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, std::ost ream& out) { | |
836 this->writeOpCode(opCode, 2, out); | |
837 this->writeWord(word1, out); | |
838 } | |
839 | |
840 void SPIRVCodeGenerator::writeString(const char* string, std::ostream& out) { | |
841 size_t length = strlen(string); | |
842 out << string; | |
843 switch (length % 4) { | |
844 case 1: | |
845 out << (char) 0; | |
846 // fall through | |
847 case 2: | |
848 out << (char) 0; | |
849 // fall through | |
850 case 3: | |
851 out << (char) 0; | |
852 break; | |
853 default: | |
854 this->writeWord(0, out); | |
855 } | |
856 } | |
857 | |
858 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, const char* string, std ::ostream& out) { | |
859 int32_t length = (int32_t) strlen(string); | |
860 this->writeOpCode(opCode, 1 + (length + 4) / 4, out); | |
861 this->writeString(string, out); | |
862 } | |
863 | |
864 | |
865 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, const ch ar* string, | |
866 std::ostream& out) { | |
867 int32_t length = (int32_t) strlen(string); | |
868 this->writeOpCode(opCode, 2 + (length + 4) / 4, out); | |
869 this->writeWord(word1, out); | |
870 this->writeString(string, out); | |
871 } | |
872 | |
873 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, | |
874 const char* string, std::ostream& out) { | |
875 int32_t length = (int32_t) strlen(string); | |
876 this->writeOpCode(opCode, 3 + (length + 4) / 4, out); | |
877 this->writeWord(word1, out); | |
878 this->writeWord(word2, out); | |
879 this->writeString(string, out); | |
880 } | |
881 | |
882 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, | |
883 std::ostream& out) { | |
884 this->writeOpCode(opCode, 3, out); | |
885 this->writeWord(word1, out); | |
886 this->writeWord(word2, out); | |
887 } | |
888 | |
889 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, | |
890 int32_t word3, std::ostream& out) { | |
891 this->writeOpCode(opCode, 4, out); | |
892 this->writeWord(word1, out); | |
893 this->writeWord(word2, out); | |
894 this->writeWord(word3, out); | |
895 } | |
896 | |
897 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, | |
898 int32_t word3, int32_t word4, std::ost ream& out) { | |
899 this->writeOpCode(opCode, 5, out); | |
900 this->writeWord(word1, out); | |
901 this->writeWord(word2, out); | |
902 this->writeWord(word3, out); | |
903 this->writeWord(word4, out); | |
904 } | |
905 | |
906 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, | |
907 int32_t word3, int32_t word4, int32_t word5, | |
908 std::ostream& out) { | |
909 this->writeOpCode(opCode, 6, out); | |
910 this->writeWord(word1, out); | |
911 this->writeWord(word2, out); | |
912 this->writeWord(word3, out); | |
913 this->writeWord(word4, out); | |
914 this->writeWord(word5, out); | |
915 } | |
916 | |
917 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, | |
918 int32_t word3, int32_t word4, int32_t word5, | |
919 int32_t word6, std::ostream& out) { | |
920 this->writeOpCode(opCode, 7, out); | |
921 this->writeWord(word1, out); | |
922 this->writeWord(word2, out); | |
923 this->writeWord(word3, out); | |
924 this->writeWord(word4, out); | |
925 this->writeWord(word5, out); | |
926 this->writeWord(word6, out); | |
927 } | |
928 | |
929 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, | |
930 int32_t word3, int32_t word4, int32_t word5, | |
931 int32_t word6, int32_t word7, std::ost ream& out) { | |
932 this->writeOpCode(opCode, 8, out); | |
933 this->writeWord(word1, out); | |
934 this->writeWord(word2, out); | |
935 this->writeWord(word3, out); | |
936 this->writeWord(word4, out); | |
937 this->writeWord(word5, out); | |
938 this->writeWord(word6, out); | |
939 this->writeWord(word7, out); | |
940 } | |
941 | |
942 void SPIRVCodeGenerator::writeInstruction(SpvOp_ opCode, int32_t word1, int32_t word2, | |
943 int32_t word3, int32_t word4, int32_t word5, | |
944 int32_t word6, int32_t word7, int32_t word8, | |
945 std::ostream& out) { | |
946 this->writeOpCode(opCode, 9, out); | |
947 this->writeWord(word1, out); | |
948 this->writeWord(word2, out); | |
949 this->writeWord(word3, out); | |
950 this->writeWord(word4, out); | |
951 this->writeWord(word5, out); | |
952 this->writeWord(word6, out); | |
953 this->writeWord(word7, out); | |
954 this->writeWord(word8, out); | |
955 } | |
956 | |
957 void SPIRVCodeGenerator::writeCapabilities(std::ostream& out) { | |
958 for (uint64_t i = 0, bit = 1; i <= kLast_Capability; i++, bit <<= 1) { | |
959 if (fCapabilities & bit) { | |
960 this->writeInstruction(SpvOpCapability, (SpvId) i, out); | |
961 } | |
962 } | |
963 } | |
964 | |
965 SpvId SPIRVCodeGenerator::nextId() { | |
966 return fIdCount++; | |
967 } | |
968 | |
969 void SPIRVCodeGenerator::writeStruct(const Type& type, SpvId resultId) { | |
970 this->writeInstruction(SpvOpName, resultId, type.name().c_str(), fNameBuffer ); | |
971 // go ahead and write all of the field types, so we don't inadvertently writ e them while we're | |
972 // in the middle of writing the struct instruction | |
973 std::vector<SpvId> types; | |
974 for (const auto& f : type.fields()) { | |
975 types.push_back(this->getType(*f.fType)); | |
976 } | |
977 this->writeOpCode(SpvOpTypeStruct, 2 + (int32_t) types.size(), fConstantBuff er); | |
978 this->writeWord(resultId, fConstantBuffer); | |
979 for (SpvId id : types) { | |
980 this->writeWord(id, fConstantBuffer); | |
981 } | |
982 size_t offset = 0; | |
983 for (int32_t i = 0; i < (int32_t) type.fields().size(); i++) { | |
984 size_t size = type.fields()[i].fType->size(); | |
985 size_t alignment = type.fields()[i].fType->alignment(); | |
986 size_t mod = offset % alignment; | |
987 if (mod != 0) { | |
988 offset += alignment - mod; | |
989 } | |
990 this->writeInstruction(SpvOpMemberName, resultId, i, type.fields()[i].fN ame.c_str(), | |
991 fNameBuffer); | |
992 this->writeLayout(type.fields()[i].fModifiers.fLayout, resultId, i); | |
993 if (type.fields()[i].fModifiers.fLayout.fBuiltin < 0) { | |
994 this->writeInstruction(SpvOpMemberDecorate, resultId, (SpvId) i, Spv DecorationOffset, | |
995 (SpvId) offset, fDecorationBuffer); | |
996 } | |
997 if (type.fields()[i].fType->kind() == Type::kMatrix_Kind) { | |
998 this->writeInstruction(SpvOpMemberDecorate, resultId, i, SpvDecorati onColMajor, | |
999 fDecorationBuffer); | |
1000 this->writeInstruction(SpvOpMemberDecorate, resultId, i, SpvDecorati onMatrixStride, | |
1001 (SpvId) type.fields()[i].fType->stride(), fDe corationBuffer); | |
1002 } | |
1003 offset += size; | |
1004 Type::Kind kind = type.fields()[i].fType->kind(); | |
1005 if ((kind == Type::kArray_Kind || kind == Type::kStruct_Kind) && offset % alignment != 0) { | |
1006 offset += alignment - offset % alignment; | |
1007 } | |
1008 ASSERT(offset % alignment == 0); | |
1009 } | |
1010 } | |
1011 | |
1012 SpvId SPIRVCodeGenerator::getType(const Type& type) { | |
1013 auto entry = fTypeMap.find(type.name()); | |
dogben
2016/06/28 02:14:55
nit: const ref
| |
1014 if (entry == fTypeMap.end()) { | |
1015 SpvId result = this->nextId(); | |
1016 switch (type.kind()) { | |
1017 case Type::kScalar_Kind: | |
1018 if (type == *kBool_Type) { | |
1019 this->writeInstruction(SpvOpTypeBool, result, fConstantBuffe r); | |
1020 } else if (type == *kInt_Type) { | |
1021 this->writeInstruction(SpvOpTypeInt, result, 32, 1, fConstan tBuffer); | |
1022 } else if (type == *kUInt_Type) { | |
1023 this->writeInstruction(SpvOpTypeInt, result, 32, 0, fConstan tBuffer); | |
1024 } else if (type == *kFloat_Type) { | |
1025 this->writeInstruction(SpvOpTypeFloat, result, 32, fConstant Buffer); | |
1026 } else if (type == *kDouble_Type) { | |
1027 this->writeInstruction(SpvOpTypeFloat, result, 64, fConstant Buffer); | |
1028 } else { | |
1029 ASSERT(false); | |
1030 } | |
1031 break; | |
1032 case Type::kVector_Kind: | |
1033 this->writeInstruction(SpvOpTypeVector, result, | |
1034 this->getType(*type.componentType()), | |
1035 type.columns(), fConstantBuffer); | |
1036 break; | |
1037 case Type::kMatrix_Kind: | |
1038 this->writeInstruction(SpvOpTypeMatrix, result, this->getType(*i ndex_type(type)), | |
1039 type.columns(), fConstantBuffer); | |
1040 break; | |
1041 case Type::kStruct_Kind: | |
1042 this->writeStruct(type, result); | |
1043 break; | |
1044 case Type::kArray_Kind: { | |
1045 if (type.columns() > 0) { | |
1046 IntLiteral count(Position(), type.columns()); | |
1047 this->writeInstruction(SpvOpTypeArray, result, | |
1048 this->getType(*type.componentType()), | |
1049 this->writeIntLiteral(count), fConsta ntBuffer); | |
1050 this->writeInstruction(SpvOpDecorate, result, SpvDecorationA rrayStride, | |
1051 (int32_t) type.stride(), fDecorationB uffer); | |
1052 } else { | |
1053 ABORT("runtime-sized arrays are not yet supported"); | |
1054 this->writeInstruction(SpvOpTypeRuntimeArray, result, | |
1055 this->getType(*type.componentType()), fConstantBuffer); | |
1056 } | |
1057 break; | |
1058 } | |
1059 case Type::kSampler_Kind: { | |
1060 SpvId image = this->nextId(); | |
1061 this->writeInstruction(SpvOpTypeImage, image, this->getType(*kFl oat_Type), | |
1062 type.dimensions(), type.isDepth(), type.i sArrayed(), | |
1063 type.isMultisampled(), type.isSampled(), | |
1064 SpvImageFormatUnknown, fConstantBuffer); | |
1065 this->writeInstruction(SpvOpTypeSampledImage, result, image, fCo nstantBuffer); | |
1066 break; | |
1067 } | |
1068 default: | |
1069 if (type == *kVoid_Type) { | |
1070 this->writeInstruction(SpvOpTypeVoid, result, fConstantBuffe r); | |
1071 } else { | |
1072 ABORT("invalid type: %s", type.description().c_str()); | |
1073 } | |
1074 } | |
1075 fTypeMap[type.name()] = result; | |
1076 return result; | |
1077 } | |
1078 return entry->second; | |
1079 } | |
1080 | |
1081 SpvId SPIRVCodeGenerator::getFunctionType(std::shared_ptr<FunctionDeclaration> f unction) { | |
1082 std::string key = function->fReturnType->description() + "("; | |
1083 std::string separator = ""; | |
1084 for (size_t i = 0; i < function->fParameters.size(); i++) { | |
1085 key += separator; | |
1086 separator = ", "; | |
1087 key += function->fParameters[i]->fType->description(); | |
1088 } | |
1089 key += ")"; | |
1090 auto entry = fTypeMap.find(key); | |
dogben
2016/06/28 02:14:55
nit: const ref
| |
1091 if (entry == fTypeMap.end()) { | |
1092 SpvId result = this->nextId(); | |
1093 int32_t length = 3 + (int32_t) function->fParameters.size(); | |
1094 SpvId returnType = this->getType(*function->fReturnType); | |
1095 std::vector<SpvId> parameterTypes; | |
1096 for (size_t i = 0; i < function->fParameters.size(); i++) { | |
1097 // glslang seems to treat all function arguments as pointers whether they need to be or | |
1098 // not. I was initially puzzled by this until I ran bizarre failure s with certain | |
1099 // patterns of function calls and control constructs, as exemplified by this minimal | |
1100 // failure case: | |
1101 // | |
1102 // void sphere(float x) { | |
1103 // } | |
1104 // | |
1105 // void map() { | |
1106 // sphere(1.0); | |
1107 // } | |
1108 // | |
1109 // void main() { | |
1110 // for (int i = 0; i < 1; i++) { | |
1111 // map(); | |
1112 // } | |
1113 // } | |
1114 // | |
1115 // As of this writing, compiling this in the "obvious" way (with sph ere taking a float) | |
1116 // crashes. Making it take a float* and storing the argument in a te mporary variable, | |
1117 // as glslang does, fixes it. It's entirely possible I simply missed whichever part of | |
1118 // the spec makes this make sense. | |
1119 // if (is_out(function->fParameters[i])) { | |
1120 parameterTypes.push_back(this->getPointerType(function->fParamet ers[i]->fType, | |
1121 SpvStorageClassFun ction)); | |
1122 // } else { | |
1123 // parameterTypes.push_back(this->getType(*function->fParameters[ i]->fType)); | |
1124 // } | |
1125 } | |
1126 this->writeOpCode(SpvOpTypeFunction, length, fConstantBuffer); | |
1127 this->writeWord(result, fConstantBuffer); | |
1128 this->writeWord(returnType, fConstantBuffer); | |
1129 for (SpvId id : parameterTypes) { | |
1130 this->writeWord(id, fConstantBuffer); | |
1131 } | |
1132 fTypeMap[key] = result; | |
1133 return result; | |
1134 } | |
1135 return entry->second; | |
1136 } | |
1137 | |
1138 SpvId SPIRVCodeGenerator::getPointerType(std::shared_ptr<Type> type, | |
1139 SpvStorageClass_ storageClass) { | |
1140 std::string key = type->description() + "*" + to_string(storageClass); | |
1141 auto entry = fTypeMap.find(key); | |
1142 if (entry == fTypeMap.end()) { | |
1143 SpvId result = this->nextId(); | |
1144 this->writeInstruction(SpvOpTypePointer, result, storageClass, | |
1145 this->getType(*type), fConstantBuffer); | |
1146 fTypeMap[key] = result; | |
1147 return result; | |
1148 } | |
1149 return entry->second; | |
1150 } | |
1151 | |
1152 SpvId SPIRVCodeGenerator::writeExpression(Expression& expr, std::ostream& out) { | |
1153 switch (expr.fKind) { | |
1154 case Expression::kBinary_Kind: | |
1155 return this->writeBinaryExpression((BinaryExpression&) expr, out); | |
1156 case Expression::kBoolLiteral_Kind: | |
1157 return this->writeBoolLiteral((BoolLiteral&) expr); | |
1158 case Expression::kConstructor_Kind: | |
1159 return this->writeConstructor((Constructor&) expr, out); | |
1160 case Expression::kIntLiteral_Kind: | |
1161 return this->writeIntLiteral((IntLiteral&) expr); | |
1162 case Expression::kFieldAccess_Kind: | |
1163 return this->writeFieldAccess(((FieldAccess&) expr), out); | |
1164 case Expression::kFloatLiteral_Kind: | |
1165 return this->writeFloatLiteral(((FloatLiteral&) expr)); | |
1166 case Expression::kFunctionCall_Kind: | |
1167 return this->writeFunctionCall((FunctionCall&) expr, out); | |
1168 case Expression::kPrefix_Kind: | |
1169 return this->writePrefixExpression((PrefixExpression&) expr, out); | |
1170 case Expression::kPostfix_Kind: | |
1171 return this->writePostfixExpression((PostfixExpression&) expr, out); | |
1172 case Expression::kSwizzle_Kind: | |
1173 return this->writeSwizzle((Swizzle&) expr, out); | |
1174 case Expression::kVariableReference_Kind: | |
1175 return this->writeVariableReference((VariableReference&) expr, out); | |
1176 case Expression::kTernary_Kind: | |
1177 return this->writeTernaryExpression((TernaryExpression&) expr, out); | |
1178 case Expression::kIndex_Kind: | |
1179 return this->writeIndexExpression((IndexExpression&) expr, out); | |
1180 default: | |
1181 ABORT("unsupported expression: %s", expr.description().c_str()); | |
1182 } | |
1183 return -1; | |
1184 } | |
1185 | |
1186 SpvId SPIRVCodeGenerator::writeIntrinsicCall(FunctionCall& c, std::ostream& out) { | |
1187 auto intrinsic = fIntrinsicMap.find(c.fFunction->fName); | |
1188 ASSERT(intrinsic != fIntrinsicMap.end()); | |
1189 std::shared_ptr<Type> type = c.fArguments[0]->fType; | |
1190 int32_t intrinsicId; | |
1191 if (std::get<0>(intrinsic->second) == kSpecial_IntrinsicKind || is_float(*ty pe)) { | |
1192 intrinsicId = std::get<1>(intrinsic->second); | |
1193 } else if (is_signed(*type)) { | |
1194 intrinsicId = std::get<2>(intrinsic->second); | |
1195 } else if (is_unsigned(*type)) { | |
1196 intrinsicId = std::get<3>(intrinsic->second); | |
1197 } else if (is_bool(*type)) { | |
1198 intrinsicId = std::get<4>(intrinsic->second); | |
1199 } else { | |
1200 ABORT("invalid call %s, cannot operate on '%s'", c.description().c_str() , | |
1201 type->description().c_str()); | |
1202 } | |
1203 switch (std::get<0>(intrinsic->second)) { | |
1204 case kGLSL_STD_450_IntrinsicKind: { | |
1205 SpvId result = this->nextId(); | |
1206 std::vector<SpvId> arguments; | |
1207 for (size_t i = 0; i < c.fArguments.size(); i++) { | |
1208 arguments.push_back(this->writeExpression(*c.fArguments[i], out) ); | |
1209 } | |
1210 this->writeOpCode(SpvOpExtInst, 5 + (int32_t) arguments.size(), out) ; | |
1211 this->writeWord(this->getType(*c.fType), out); | |
1212 this->writeWord(result, out); | |
1213 this->writeWord(fGLSLExtendedInstructions, out); | |
1214 this->writeWord(intrinsicId, out); | |
1215 for (SpvId id : arguments) { | |
1216 this->writeWord(id, out); | |
1217 } | |
1218 return result; | |
1219 } | |
1220 case kSPIRV_IntrinsicKind: { | |
1221 SpvId result = this->nextId(); | |
1222 std::vector<SpvId> arguments; | |
1223 for (size_t i = 0; i < c.fArguments.size(); i++) { | |
1224 arguments.push_back(this->writeExpression(*c.fArguments[i], out) ); | |
1225 } | |
1226 this->writeOpCode((SpvOp_) intrinsicId, 3 + (int32_t) arguments.size (), out); | |
1227 this->writeWord(this->getType(*c.fType), out); | |
1228 this->writeWord(result, out); | |
1229 for (SpvId id : arguments) { | |
1230 this->writeWord(id, out); | |
1231 } | |
1232 return result; | |
1233 } | |
1234 case kSpecial_IntrinsicKind: | |
1235 return this->writeSpecialIntrinsic(c, (SpecialIntrinsic) intrinsicId , out); | |
1236 default: | |
1237 ABORT("unsupported intrinsic kind"); | |
1238 } | |
1239 } | |
1240 | |
1241 SpvId SPIRVCodeGenerator::writeSpecialIntrinsic(FunctionCall& c, SpecialIntrinsi c kind, | |
1242 std::ostream& out) { | |
1243 SpvId result = this->nextId(); | |
1244 switch (kind) { | |
1245 case kAtan_SpecialIntrinsic: { | |
1246 std::vector<SpvId> arguments; | |
1247 for (size_t i = 0; i < c.fArguments.size(); i++) { | |
1248 arguments.push_back(this->writeExpression(*c.fArguments[i], out) ); | |
1249 } | |
1250 this->writeOpCode(SpvOpExtInst, 5 + (int32_t) arguments.size(), out) ; | |
1251 this->writeWord(this->getType(*c.fType), out); | |
1252 this->writeWord(result, out); | |
1253 this->writeWord(fGLSLExtendedInstructions, out); | |
1254 this->writeWord(arguments.size() == 2 ? GLSLstd450Atan2 : GLSLstd450 Atan, out); | |
1255 for (SpvId id : arguments) { | |
1256 this->writeWord(id, out); | |
1257 } | |
1258 return result; | |
1259 } | |
1260 case kTexture_SpecialIntrinsic: { | |
1261 SpvId type = this->getType(*c.fType); | |
1262 SpvId sampler = this->writeExpression(*c.fArguments[0], out); | |
1263 SpvId uv = this->writeExpression(*c.fArguments[1], out); | |
1264 if (c.fArguments.size() == 3) { | |
1265 this->writeInstruction(SpvOpImageSampleImplicitLod, type, result , sampler, uv, | |
1266 SpvImageOperandsBiasMask, | |
1267 this->writeExpression(*c.fArguments[2], o ut), | |
1268 out); | |
1269 } else { | |
1270 ASSERT(c.fArguments.size() == 2); | |
1271 this->writeInstruction(SpvOpImageSampleImplicitLod, type, result , sampler, uv, out); | |
1272 } | |
1273 break; | |
1274 } | |
1275 case kTextureProj_SpecialIntrinsic: { | |
1276 SpvId type = this->getType(*c.fType); | |
1277 SpvId sampler = this->writeExpression(*c.fArguments[0], out); | |
1278 SpvId uv = this->writeExpression(*c.fArguments[1], out); | |
1279 if (c.fArguments.size() == 3) { | |
1280 this->writeInstruction(SpvOpImageSampleProjImplicitLod, type, re sult, sampler, uv, | |
1281 SpvImageOperandsBiasMask, | |
1282 this->writeExpression(*c.fArguments[2], o ut), | |
1283 out); | |
1284 } else { | |
1285 ASSERT(c.fArguments.size() == 2); | |
1286 this->writeInstruction(SpvOpImageSampleProjImplicitLod, type, re sult, sampler, uv, | |
1287 out); | |
1288 } | |
1289 break; | |
1290 } | |
1291 case kTexture2D_SpecialIntrinsic: { | |
1292 SpvId img = this->writeExpression(*c.fArguments[0], out); | |
1293 SpvId coords = this->writeExpression(*c.fArguments[1], out); | |
1294 this->writeInstruction(SpvOpImageSampleImplicitLod, | |
1295 this->getType(*c.fType), | |
1296 result, | |
1297 img, | |
1298 coords, | |
1299 out); | |
1300 break; | |
1301 } | |
1302 } | |
1303 return result; | |
1304 } | |
1305 | |
1306 SpvId SPIRVCodeGenerator::writeFunctionCall(FunctionCall& c, std::ostream& out) { | |
1307 const auto& entry = fFunctionMap.find(c.fFunction); | |
1308 if (entry == fFunctionMap.end()) { | |
1309 return this->writeIntrinsicCall(c, out); | |
1310 } | |
1311 std::vector<SpvId> arguments; | |
1312 for (size_t i = 0; i < c.fArguments.size(); i++) { | |
1313 // see getFunctionType for an explanation of why we're always using out parameters | |
1314 if (is_out(c.fFunction->fParameters[i])) { | |
1315 arguments.push_back(this->getLValue(*c.fArguments[i], out)); | |
1316 } else { | |
1317 SpvId expr = this->writeExpression(*c.fArguments[i], out); | |
1318 SpvId tmpVar = this->nextId(); | |
1319 this->writeInstruction(SpvOpVariable, | |
1320 this->getPointerType(c.fArguments[i]->fType, | |
1321 SpvStorageClassFunction) , | |
1322 tmpVar, | |
1323 SpvStorageClassFunction, | |
1324 out); | |
1325 this->writeInstruction(SpvOpStore, tmpVar, expr, out); | |
1326 arguments.push_back(tmpVar); | |
1327 } | |
1328 } | |
1329 SpvId result = this->nextId(); | |
1330 this->writeOpCode(SpvOpFunctionCall, 4 + (int32_t) c.fArguments.size(), out) ; | |
1331 this->writeWord(this->getType(*c.fType), out); | |
1332 this->writeWord(result, out); | |
1333 this->writeWord(entry->second, out); | |
1334 for (SpvId id : arguments) { | |
1335 this->writeWord(id, out); | |
1336 } | |
1337 return result; | |
1338 } | |
1339 | |
1340 SpvId SPIRVCodeGenerator::writeConstantVector(Constructor& c) { | |
1341 ASSERT(c.fType->kind() == Type::kVector_Kind && c.isConstant()); | |
1342 SpvId result = this->nextId(); | |
1343 std::vector<SpvId> arguments; | |
1344 for (size_t i = 0; i < c.fArguments.size(); i++) { | |
1345 arguments.push_back(this->writeExpression(*c.fArguments[i], fConstantBuf fer)); | |
1346 } | |
1347 SpvId type = this->getType(*c.fType); | |
1348 if (c.fArguments.size() == 1) { | |
1349 // with a single argument, a vector will have all of its entries equal t o the argument | |
1350 this->writeOpCode(SpvOpConstantComposite, 3 + c.fType->columns(), fConst antBuffer); | |
1351 this->writeWord(type, fConstantBuffer); | |
1352 this->writeWord(result, fConstantBuffer); | |
1353 for (int i = 0; i < c.fType->columns(); i++) { | |
1354 this->writeWord(arguments[0], fConstantBuffer); | |
1355 } | |
1356 } else { | |
1357 this->writeOpCode(SpvOpConstantComposite, 3 + (int32_t) c.fArguments.siz e(), | |
1358 fConstantBuffer); | |
1359 this->writeWord(type, fConstantBuffer); | |
1360 this->writeWord(result, fConstantBuffer); | |
1361 for (SpvId id : arguments) { | |
1362 this->writeWord(id, fConstantBuffer); | |
1363 } | |
1364 } | |
1365 return result; | |
1366 } | |
1367 | |
1368 SpvId SPIRVCodeGenerator::writeFloatConstructor(Constructor& c, std::ostream& ou t) { | |
1369 ASSERT(c.fType == kFloat_Type); | |
1370 ASSERT(c.fArguments.size() == 1); | |
1371 ASSERT(c.fArguments[0]->fType->isNumber()); | |
1372 SpvId result = this->nextId(); | |
1373 SpvId parameter = this->writeExpression(*c.fArguments[0], out); | |
1374 if (c.fArguments[0]->fType == kInt_Type) { | |
1375 this->writeInstruction(SpvOpConvertSToF, this->getType(*c.fType), result , parameter, | |
1376 out); | |
1377 } else if (c.fArguments[0]->fType == kUInt_Type) { | |
1378 this->writeInstruction(SpvOpConvertUToF, this->getType(*c.fType), result , parameter, | |
1379 out); | |
1380 } else if (c.fArguments[0]->fType == kFloat_Type) { | |
1381 return parameter; | |
1382 } | |
1383 return result; | |
1384 } | |
1385 | |
1386 SpvId SPIRVCodeGenerator::writeIntConstructor(Constructor& c, std::ostream& out) { | |
1387 ASSERT(c.fType == kInt_Type); | |
1388 ASSERT(c.fArguments.size() == 1); | |
1389 ASSERT(c.fArguments[0]->fType->isNumber()); | |
1390 SpvId result = this->nextId(); | |
1391 SpvId parameter = this->writeExpression(*c.fArguments[0], out); | |
1392 if (c.fArguments[0]->fType == kFloat_Type) { | |
1393 this->writeInstruction(SpvOpConvertFToS, this->getType(*c.fType), result , parameter, | |
1394 out); | |
1395 } else if (c.fArguments[0]->fType == kUInt_Type) { | |
1396 this->writeInstruction(SpvOpSatConvertUToS, this->getType(*c.fType), res ult, parameter, | |
1397 out); | |
1398 } else if (c.fArguments[0]->fType == kInt_Type) { | |
1399 return parameter; | |
1400 } | |
1401 return result; | |
1402 } | |
1403 | |
1404 SpvId SPIRVCodeGenerator::writeMatrixConstructor(Constructor& c, std::ostream& o ut) { | |
1405 ASSERT(c.fType->kind() == Type::kMatrix_Kind); | |
1406 // go ahead and write the arguments so we don't try to write new instruction s in the middle of | |
1407 // an instruction | |
1408 std::vector<SpvId> arguments; | |
1409 for (size_t i = 0; i < c.fArguments.size(); i++) { | |
1410 arguments.push_back(this->writeExpression(*c.fArguments[i], out)); | |
1411 } | |
1412 SpvId result = this->nextId(); | |
1413 int rows = c.fType->rows(); | |
1414 int columns = c.fType->columns(); | |
1415 // FIXME this won't work to create a matrix from another matrix | |
1416 if (arguments.size() == 1) { | |
1417 // with a single argument, a matrix will have all of its diagonal entrie s equal to the | |
1418 // argument and its other values equal to zero | |
1419 // FIXME this won't work for int matrices | |
1420 FloatLiteral zero(Position(), 0); | |
1421 SpvId zeroId = this->writeFloatLiteral(zero); | |
1422 std::vector<SpvId> columnIds; | |
1423 for (int column = 0; column < columns; column++) { | |
1424 this->writeOpCode(SpvOpCompositeConstruct, 3 + c.fType->rows(), | |
1425 out); | |
1426 this->writeWord(this->getType(*c.fType->componentType()->toCompound( rows, 1)), out); | |
1427 SpvId columnId = this->nextId(); | |
1428 this->writeWord(columnId, out); | |
1429 columnIds.push_back(columnId); | |
1430 for (int row = 0; row < c.fType->columns(); row++) { | |
1431 this->writeWord(row == column ? arguments[0] : zeroId, out); | |
1432 } | |
1433 } | |
1434 this->writeOpCode(SpvOpCompositeConstruct, 3 + columns, | |
1435 out); | |
1436 this->writeWord(this->getType(*c.fType), out); | |
1437 this->writeWord(result, out); | |
1438 for (SpvId id : columnIds) { | |
1439 this->writeWord(id, out); | |
1440 } | |
1441 } else { | |
1442 std::vector<SpvId> columnIds; | |
1443 int currentCount = 0; | |
1444 for (size_t i = 0; i < arguments.size(); i++) { | |
1445 if (c.fArguments[i]->fType->kind() == Type::kVector_Kind) { | |
1446 ASSERT(currentCount == 0); | |
1447 columnIds.push_back(arguments[i]); | |
1448 currentCount = 0; | |
1449 } else { | |
1450 ASSERT(c.fArguments[i]->fType->kind() == Type::kScalar_Kind); | |
1451 if (currentCount == 0) { | |
1452 this->writeOpCode(SpvOpCompositeConstruct, 3 + c.fType->rows (), out); | |
1453 this->writeWord(this->getType(*c.fType->componentType()->toC ompound(rows, 1)), | |
1454 out); | |
1455 SpvId id = this->nextId(); | |
1456 this->writeWord(id, out); | |
1457 columnIds.push_back(id); | |
1458 } | |
1459 this->writeWord(arguments[i], out); | |
1460 currentCount = (currentCount + 1) % rows; | |
1461 } | |
1462 } | |
1463 ASSERT(columnIds.size() == (size_t) columns); | |
1464 this->writeOpCode(SpvOpCompositeConstruct, 3 + columns, out); | |
1465 this->writeWord(this->getType(*c.fType), out); | |
1466 this->writeWord(result, out); | |
1467 for (SpvId id : columnIds) { | |
1468 this->writeWord(id, out); | |
1469 } | |
1470 } | |
1471 return result; | |
1472 } | |
1473 | |
1474 SpvId SPIRVCodeGenerator::writeVectorConstructor(Constructor& c, std::ostream& o ut) { | |
1475 ASSERT(c.fType->kind() == Type::kVector_Kind); | |
1476 if (c.isConstant()) { | |
1477 return this->writeConstantVector(c); | |
1478 } | |
1479 // go ahead and write the arguments so we don't try to write new instruction s in the middle of | |
1480 // an instruction | |
1481 std::vector<SpvId> arguments; | |
1482 for (size_t i = 0; i < c.fArguments.size(); i++) { | |
1483 arguments.push_back(this->writeExpression(*c.fArguments[i], out)); | |
1484 } | |
1485 SpvId result = this->nextId(); | |
1486 if (arguments.size() == 1 && c.fArguments[0]->fType->kind() == Type::kScalar _Kind) { | |
1487 this->writeOpCode(SpvOpCompositeConstruct, 3 + c.fType->columns(), out); | |
1488 this->writeWord(this->getType(*c.fType), out); | |
1489 this->writeWord(result, out); | |
1490 for (int i = 0; i < c.fType->columns(); i++) { | |
1491 this->writeWord(arguments[0], out); | |
1492 } | |
1493 } else { | |
1494 this->writeOpCode(SpvOpCompositeConstruct, 3 + (int32_t) c.fArguments.si ze(), out); | |
1495 this->writeWord(this->getType(*c.fType), out); | |
1496 this->writeWord(result, out); | |
1497 for (SpvId id : arguments) { | |
1498 this->writeWord(id, out); | |
1499 } | |
1500 } | |
1501 return result; | |
1502 } | |
1503 | |
1504 SpvId SPIRVCodeGenerator::writeConstructor(Constructor& c, std::ostream& out) { | |
1505 if (c.fType == kFloat_Type) { | |
1506 return this->writeFloatConstructor(c, out); | |
1507 } else if (c.fType == kInt_Type) { | |
1508 return this->writeIntConstructor(c, out); | |
1509 } | |
1510 switch (c.fType->kind()) { | |
1511 case Type::kVector_Kind: | |
1512 return this->writeVectorConstructor(c, out); | |
1513 case Type::kMatrix_Kind: | |
1514 return this->writeMatrixConstructor(c, out); | |
1515 default: | |
1516 ABORT("unsupported constructor: %s", c.description().c_str()); | |
1517 } | |
1518 } | |
1519 | |
1520 SpvStorageClass_ get_storage_class(const Modifiers& modifiers) { | |
1521 if (modifiers.fFlags & Modifiers::kIn_Flag) { | |
1522 return SpvStorageClassInput; | |
1523 } else if (modifiers.fFlags & Modifiers::kOut_Flag) { | |
1524 return SpvStorageClassOutput; | |
1525 } else if (modifiers.fFlags & Modifiers::kUniform_Flag) { | |
1526 return SpvStorageClassUniform; | |
1527 } else { | |
1528 return SpvStorageClassFunction; | |
1529 } | |
1530 } | |
1531 | |
1532 SpvStorageClass_ get_storage_class(Expression& expr) { | |
1533 switch (expr.fKind) { | |
1534 case Expression::kVariableReference_Kind: | |
1535 return get_storage_class(((VariableReference&) expr).fVariable->fMod ifiers); | |
1536 case Expression::kFieldAccess_Kind: | |
1537 return get_storage_class(*((FieldAccess&) expr).fBase); | |
1538 case Expression::kIndex_Kind: | |
1539 return get_storage_class(*((IndexExpression&) expr).fBase); | |
1540 default: | |
1541 return SpvStorageClassFunction; | |
1542 } | |
1543 } | |
1544 | |
1545 // TODO: unify this with getAccessChain? | |
1546 SpvId SPIRVCodeGenerator::getLValue(Expression& value, std::ostream& out) { | |
1547 switch (value.fKind) { | |
1548 case Expression::kVariableReference_Kind: { | |
1549 std::shared_ptr<Variable> var = ((VariableReference&) value).fVariab le; | |
1550 auto entry = fVariableMap.find(var); | |
1551 ASSERT(entry != fVariableMap.end()); | |
1552 return entry->second; | |
1553 } | |
1554 case Expression::kIndex_Kind: { | |
1555 IndexExpression& index = (IndexExpression&) value; | |
1556 SpvId base = this->getLValue(*index.fBase, out); | |
1557 SpvId result = this->nextId(); | |
1558 this->writeInstruction(SpvOpAccessChain, | |
1559 this->getPointerType(index.fType, | |
1560 get_storage_class(*index .fBase)), | |
1561 result, | |
1562 base, | |
1563 this->writeExpression(*index.fIndex, out), | |
1564 out); | |
1565 return result; | |
1566 } | |
1567 case Expression::kFieldAccess_Kind: { | |
1568 FieldAccess& f = (FieldAccess&) value; | |
1569 SpvId base = this->getLValue(*f.fBase, out); | |
1570 IntLiteral index(Position(), f.fFieldIndex); | |
1571 SpvId result = this->nextId(); | |
1572 this->writeInstruction(SpvOpAccessChain, | |
1573 this->getPointerType(f.fType, | |
1574 get_storage_class(*f.fBa se)), | |
1575 result, | |
1576 base, | |
1577 this->writeIntLiteral(index), | |
1578 out); | |
1579 return result; | |
1580 } | |
1581 default: | |
1582 SpvId result = this->nextId(); | |
1583 SpvId type = this->getPointerType(value.fType, SpvStorageClassFuncti on); | |
1584 this->writeInstruction(SpvOpVariable, type, result, SpvStorageClassF unction, out); | |
1585 this->writeInstruction(SpvOpStore, result, this->writeExpression(val ue, out), out); | |
1586 return result; | |
1587 } | |
1588 } | |
1589 | |
1590 void SPIRVCodeGenerator::storeToLValue(Expression& lvalue, SpvId value, std::ost ream& out) { | |
1591 switch (lvalue.fKind) { | |
1592 case Expression::kVariableReference_Kind: // fall through | |
1593 case Expression::kIndex_Kind: // fall through | |
1594 case Expression::kFieldAccess_Kind: { | |
1595 SpvId id = this->getLValue(lvalue, out); | |
1596 this->writeInstruction(SpvOpStore, id, value, out); | |
1597 break; | |
1598 } | |
1599 case Expression::kSwizzle_Kind: { | |
1600 Swizzle& swizzle = (Swizzle&) lvalue; | |
1601 size_t count = swizzle.fComponents.size(); | |
1602 SpvId base = this->getLValue(*swizzle.fBase, out); | |
1603 if (count == 1) { | |
1604 IntLiteral index(Position(), swizzle.fComponents[0]); | |
1605 SpvId target = this->nextId(); | |
1606 this->writeInstruction(SpvOpAccessChain, | |
1607 this->getPointerType(swizzle.fType, | |
1608 get_storage_class(*s wizzle.fBase)), | |
1609 target, | |
1610 base, | |
1611 this->writeIntLiteral(index), | |
1612 out); | |
1613 this->writeInstruction(SpvOpStore, target, value, out); | |
1614 } else { | |
1615 // use OpVectorShuffle to mix and match the vector components. W e effectively create | |
1616 // a virtual vector out of the concatenation of the left and rig ht vectors, and then | |
1617 // select components from this virtual vector to make the result vector. For | |
1618 // instance, given: | |
1619 // vec3 L = ...; | |
1620 // vec3 R = ...; | |
1621 // L.xz = R.xy; | |
1622 // we end up with the virtual vector (L.x, L.y, L.z, R.x, R.y, R .z). Then we want | |
1623 // our result vector to look like (R.x, L.y, R.y), so we need to select indices | |
1624 // (4, 1, 5). | |
dogben
2016/06/28 02:14:55
3, 1, 4
| |
1625 SpvId shuffle = this->nextId(); | |
1626 std::shared_ptr<Type> baseType = swizzle.fBase->fType; | |
1627 SpvId lhs = this->writeExpression(*swizzle.fBase, out); | |
1628 this->writeOpCode(SpvOpVectorShuffle, 5 + baseType->columns(), o ut); | |
1629 this->writeWord(this->getType(*baseType), out); | |
1630 this->writeWord(shuffle, out); | |
1631 this->writeWord(lhs, out); | |
1632 this->writeWord(value, out); | |
1633 for (int i = 0; i < baseType->columns(); i++) { | |
1634 // current offset into the virtual vector, defaults to pulli ng the unmodified | |
1635 // value from the left side | |
1636 int offset = i; | |
1637 // check to see if we are writing this component | |
1638 for (size_t j = 0; j < swizzle.fComponents.size(); j++) { | |
1639 if (swizzle.fComponents[j] == i) { | |
1640 // we're writing to this component, so adjust the of fset to pull from | |
1641 // the correct component of the right side instead o f preserving the | |
1642 // value from the left | |
1643 offset = (int) (j + baseType->columns()); | |
1644 break; | |
1645 } | |
1646 } | |
1647 this->writeWord(offset, out); | |
1648 } | |
1649 this->writeInstruction(SpvOpStore, base, shuffle, out); | |
1650 } | |
1651 break; | |
1652 } | |
1653 default: | |
1654 ABORT("cannot use %s as an lvalue", lvalue.description().c_str()); | |
1655 } | |
1656 } | |
1657 | |
1658 SpvId SPIRVCodeGenerator::writeVariableReference(VariableReference& ref, std::os tream& out) { | |
1659 auto entry = fVariableMap.find(ref.fVariable); | |
1660 ASSERT(entry != fVariableMap.end()); | |
1661 SpvId var = entry->second; | |
1662 SpvId result = this->nextId(); | |
1663 this->writeInstruction(SpvOpLoad, this->getType(*ref.fVariable->fType), resu lt, var, out); | |
1664 return result; | |
1665 } | |
1666 | |
1667 std::vector<SpvId> SPIRVCodeGenerator::getAccessChain(Expression& expr, std::ost ream& out) { | |
1668 std::vector<SpvId> chain; | |
1669 switch (expr.fKind) { | |
1670 case Expression::kIndex_Kind: { | |
1671 IndexExpression& indexExpr = (IndexExpression&) expr; | |
1672 chain = this->getAccessChain(*indexExpr.fBase, out); | |
1673 chain.push_back(this->writeExpression(*indexExpr.fIndex, out)); | |
1674 break; | |
1675 } | |
1676 case Expression::kFieldAccess_Kind: { | |
1677 FieldAccess& fieldExpr = (FieldAccess&) expr; | |
1678 chain = this->getAccessChain(*fieldExpr.fBase, out); | |
1679 IntLiteral index(Position(), fieldExpr.fFieldIndex); | |
1680 chain.push_back(this->writeIntLiteral(index)); | |
1681 break; | |
1682 } | |
1683 default: | |
1684 chain.push_back(this->getLValue(expr, out)); | |
1685 } | |
1686 return chain; | |
1687 } | |
1688 | |
1689 SpvId SPIRVCodeGenerator::writeIndexExpression(IndexExpression& expr, std::ostre am& out) { | |
1690 std::vector<SpvId> chain = this->getAccessChain(expr, out); | |
1691 SpvId member = this->nextId(); | |
1692 this->writeOpCode(SpvOpAccessChain, (SpvId) (3 + chain.size()), out); | |
1693 this->writeWord(this->getPointerType(expr.fType, get_storage_class(*expr.fBa se)), out); | |
1694 this->writeWord(member, out); | |
1695 for (SpvId idx : chain) { | |
1696 this->writeWord(idx, out); | |
1697 } | |
1698 SpvId result = this->nextId(); | |
1699 this->writeInstruction(SpvOpLoad, this->getType(*expr.fType), result, member , out); | |
1700 return result; | |
1701 } | |
1702 | |
1703 SpvId SPIRVCodeGenerator::writeFieldAccess(FieldAccess& f, std::ostream& out) { | |
1704 std::vector<SpvId> chain = this->getAccessChain(f, out); | |
1705 SpvId member = this->nextId(); | |
1706 this->writeOpCode(SpvOpAccessChain, (SpvId) (3 + chain.size()), out); | |
1707 this->writeWord(this->getPointerType(f.fType, get_storage_class(*f.fBase)), out); | |
1708 this->writeWord(member, out); | |
1709 for (SpvId idx : chain) { | |
1710 this->writeWord(idx, out); | |
1711 } | |
1712 SpvId result = this->nextId(); | |
1713 this->writeInstruction(SpvOpLoad, this->getType(*f.fType), result, member, o ut); | |
1714 return result; | |
1715 } | |
1716 | |
1717 SpvId SPIRVCodeGenerator::writeSwizzle(Swizzle& swizzle, std::ostream& out) { | |
1718 SpvId base = this->writeExpression(*swizzle.fBase, out); | |
1719 SpvId result = this->nextId(); | |
1720 size_t count = swizzle.fComponents.size(); | |
1721 if (count == 1) { | |
1722 this->writeInstruction(SpvOpCompositeExtract, this->getType(*swizzle.fTy pe), result, base, | |
1723 swizzle.fComponents[0], out); | |
1724 } else { | |
1725 this->writeOpCode(SpvOpVectorShuffle, 5 + (int32_t) count, out); | |
1726 this->writeWord(this->getType(*swizzle.fType), out); | |
1727 this->writeWord(result, out); | |
1728 this->writeWord(base, out); | |
1729 this->writeWord(base, out); | |
1730 for (int component : swizzle.fComponents) { | |
1731 this->writeWord(component, out); | |
1732 } | |
1733 } | |
1734 return result; | |
1735 } | |
1736 | |
1737 SpvId SPIRVCodeGenerator::writeBinaryOperation(const Type& resultType, | |
1738 const Type& operandType, SpvId lh s, | |
1739 SpvId rhs, SpvOp_ ifFloat, SpvOp_ ifInt, | |
1740 SpvOp_ ifUInt, SpvOp_ ifBool, std ::ostream& out) { | |
1741 SpvId result = this->nextId(); | |
1742 if (is_float(operandType)) { | |
1743 this->writeInstruction(ifFloat, this->getType(resultType), result, lhs, rhs, out); | |
1744 } else if (is_signed(operandType)) { | |
1745 this->writeInstruction(ifInt, this->getType(resultType), result, lhs, rh s, out); | |
1746 } else if (is_unsigned(operandType)) { | |
1747 this->writeInstruction(ifUInt, this->getType(resultType), result, lhs, r hs, out); | |
1748 } else if (operandType == *kBool_Type) { | |
1749 this->writeInstruction(ifBool, this->getType(resultType), result, lhs, r hs, out); | |
1750 } else { | |
1751 ABORT("invalid operandType: %s", operandType.description().c_str()); | |
1752 } | |
1753 return result; | |
1754 } | |
1755 | |
1756 SpvId SPIRVCodeGenerator::writeBinaryExpression(BinaryExpression& b, std::ostrea m& out) { | |
1757 // handle cases where we don't necessarily evaluate both LHS and RHS | |
1758 switch (b.fOperator) { | |
1759 case Token::EQ: { | |
1760 SpvId rhs = this->writeExpression(*b.fRight, out); | |
1761 this->storeToLValue(*b.fLeft, rhs, out); | |
1762 return rhs; | |
1763 } | |
1764 case Token::LOGICALAND: | |
1765 return this->writeLogicalAnd(b, out); | |
1766 case Token::LOGICALOR: | |
1767 return this->writeLogicalOr(b, out); | |
1768 default: | |
1769 break; | |
1770 } | |
1771 | |
1772 // "normal" operators | |
1773 const Type& resultType = *b.fType; | |
1774 SpvId lhs = this->writeExpression(*b.fLeft, out); | |
1775 SpvId rhs = this->writeExpression(*b.fRight, out); | |
1776 // component type we are operating on: float, int, uint | |
1777 const Type* operandType; | |
1778 // IR allows mismatched types in expressions (e.g. vec2 * float), but they n eed special handling | |
1779 // in SPIR-V | |
1780 if (b.fLeft->fType != b.fRight->fType) { | |
1781 if (b.fLeft->fType->kind() == Type::kVector_Kind && | |
1782 b.fRight->fType->isNumber()) { | |
1783 // promote number to vector | |
1784 SpvId vec = this->nextId(); | |
1785 this->writeOpCode(SpvOpCompositeConstruct, 3 + b.fType->columns(), o ut); | |
1786 this->writeWord(this->getType(resultType), out); | |
1787 this->writeWord(vec, out); | |
1788 for (int i = 0; i < resultType.columns(); i++) { | |
1789 this->writeWord(rhs, out); | |
1790 } | |
1791 rhs = vec; | |
1792 operandType = b.fRight->fType.get(); | |
1793 } else if (b.fRight->fType->kind() == Type::kVector_Kind && | |
1794 b.fLeft->fType->isNumber()) { | |
1795 // promote number to vector | |
1796 SpvId vec = this->nextId(); | |
1797 this->writeOpCode(SpvOpCompositeConstruct, 3 + b.fType->columns(), o ut); | |
1798 this->writeWord(this->getType(resultType), out); | |
1799 this->writeWord(vec, out); | |
1800 for (int i = 0; i < resultType.columns(); i++) { | |
1801 this->writeWord(lhs, out); | |
1802 } | |
1803 lhs = vec; | |
1804 operandType = b.fLeft->fType.get(); | |
1805 } else if (b.fLeft->fType->kind() == Type::kMatrix_Kind) { | |
1806 SpvOp_ op; | |
1807 if (b.fRight->fType->kind() == Type::kMatrix_Kind) { | |
1808 op = SpvOpMatrixTimesMatrix; | |
1809 } else if (b.fRight->fType->kind() == Type::kVector_Kind) { | |
1810 op = SpvOpMatrixTimesVector; | |
1811 } else { | |
1812 ASSERT(b.fRight->fType->kind() == Type::kScalar_Kind); | |
1813 op = SpvOpMatrixTimesScalar; | |
1814 } | |
1815 SpvId result = this->nextId(); | |
1816 this->writeInstruction(op, this->getType(*b.fType), result, lhs, rhs , out); | |
1817 if (b.fOperator == Token::STAREQ) { | |
1818 this->storeToLValue(*b.fLeft, result, out); | |
1819 } else { | |
1820 ASSERT(b.fOperator == Token::STAR); | |
1821 } | |
1822 return result; | |
1823 } else if (b.fRight->fType->kind() == Type::kMatrix_Kind) { | |
1824 SpvId result = this->nextId(); | |
1825 if (b.fLeft->fType->kind() == Type::kVector_Kind) { | |
1826 this->writeInstruction(SpvOpVectorTimesMatrix, this->getType(*b. fType), result, lhs, | |
1827 rhs, out); | |
1828 } else { | |
1829 ASSERT(b.fLeft->fType->kind() == Type::kScalar_Kind); | |
1830 this->writeInstruction(SpvOpMatrixTimesScalar, this->getType(*b. fType), result, rhs, | |
1831 lhs, out); | |
1832 } | |
1833 if (b.fOperator == Token::STAREQ) { | |
1834 this->storeToLValue(*b.fLeft, result, out); | |
1835 } else { | |
1836 ASSERT(b.fOperator == Token::STAR); | |
1837 } | |
1838 return result; | |
1839 } else { | |
1840 ABORT("unsupported binary expression: %s", b.description().c_str()); | |
1841 } | |
1842 } else { | |
1843 operandType = b.fLeft->fType.get(); | |
1844 ASSERT(*operandType == *b.fRight->fType.get()); | |
dogben
2016/06/28 02:14:55
nit: .get() is superfluous
| |
1845 } | |
1846 switch (b.fOperator) { | |
1847 case Token::EQEQ: | |
1848 ASSERT(resultType == *kBool_Type); | |
1849 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , SpvOpFOrdEqual, | |
1850 SpvOpIEqual, SpvOpIEqual, SpvOpLog icalEqual, out); | |
1851 case Token::NEQ: | |
1852 ASSERT(resultType == *kBool_Type); | |
1853 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , SpvOpFOrdNotEqual, | |
1854 SpvOpINotEqual, SpvOpINotEqual, Sp vOpLogicalNotEqual, | |
1855 out); | |
1856 case Token::GT: | |
1857 ASSERT(resultType == *kBool_Type); | |
1858 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , | |
1859 SpvOpFOrdGreaterThan, SpvOpSGreate rThan, | |
1860 SpvOpUGreaterThan, SpvOpUndef, out ); | |
1861 case Token::LT: | |
1862 ASSERT(resultType == *kBool_Type); | |
1863 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , SpvOpFOrdLessThan, | |
1864 SpvOpSLessThan, SpvOpULessThan, Sp vOpUndef, out); | |
1865 case Token::GTEQ: | |
1866 ASSERT(resultType == *kBool_Type); | |
1867 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , | |
1868 SpvOpFOrdGreaterThanEqual, SpvOpSG reaterThanEqual, | |
1869 SpvOpUGreaterThanEqual, SpvOpUndef , out); | |
1870 case Token::LTEQ: | |
1871 ASSERT(resultType == *kBool_Type); | |
1872 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , | |
1873 SpvOpFOrdLessThanEqual, SpvOpSLess ThanEqual, | |
1874 SpvOpULessThanEqual, SpvOpUndef, o ut); | |
1875 case Token::PLUS: | |
1876 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , SpvOpFAdd, | |
1877 SpvOpIAdd, SpvOpIAdd, SpvOpUndef, out); | |
1878 case Token::MINUS: | |
1879 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , SpvOpFSub, | |
1880 SpvOpISub, SpvOpISub, SpvOpUndef, out); | |
1881 case Token::STAR: | |
1882 if (b.fLeft->fType->kind() == Type::kMatrix_Kind && | |
1883 b.fRight->fType->kind() == Type::kMatrix_Kind) { | |
1884 // matrix multiply | |
1885 SpvId result = this->nextId(); | |
1886 this->writeInstruction(SpvOpMatrixTimesMatrix, this->getType(res ultType), result, | |
1887 lhs, rhs, out); | |
1888 return result; | |
1889 } | |
1890 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , SpvOpFMul, | |
1891 SpvOpIMul, SpvOpIMul, SpvOpUndef, out); | |
1892 case Token::SLASH: | |
1893 return this->writeBinaryOperation(resultType, *operandType, lhs, rhs , SpvOpFDiv, | |
1894 SpvOpSDiv, SpvOpUDiv, SpvOpUndef, out); | |
1895 case Token::PLUSEQ: { | |
1896 SpvId result = this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFAdd, | |
1897 SpvOpIAdd, SpvOpIAdd, SpvO pUndef, out); | |
1898 this->storeToLValue(*b.fLeft, result, out); | |
1899 return result; | |
1900 } | |
1901 case Token::MINUSEQ: { | |
1902 SpvId result = this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFSub, | |
1903 SpvOpISub, SpvOpISub, SpvO pUndef, out); | |
1904 this->storeToLValue(*b.fLeft, result, out); | |
1905 return result; | |
1906 } | |
1907 case Token::STAREQ: { | |
1908 if (b.fLeft->fType->kind() == Type::kMatrix_Kind && | |
1909 b.fRight->fType->kind() == Type::kMatrix_Kind) { | |
1910 // matrix multiply | |
1911 SpvId result = this->nextId(); | |
1912 this->writeInstruction(SpvOpMatrixTimesMatrix, this->getType(res ultType), result, | |
1913 lhs, rhs, out); | |
1914 this->storeToLValue(*b.fLeft, result, out); | |
1915 return result; | |
1916 } | |
1917 SpvId result = this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFMul, | |
1918 SpvOpIMul, SpvOpIMul, SpvO pUndef, out); | |
1919 this->storeToLValue(*b.fLeft, result, out); | |
1920 return result; | |
1921 } | |
1922 case Token::SLASHEQ: { | |
1923 SpvId result = this->writeBinaryOperation(resultType, *operandType, lhs, rhs, SpvOpFDiv, | |
1924 SpvOpSDiv, SpvOpUDiv, SpvO pUndef, out); | |
1925 this->storeToLValue(*b.fLeft, result, out); | |
1926 return result; | |
1927 } | |
1928 default: | |
1929 // FIXME: missing support for some operators (bitwise, &&=, ||=, shi ft...) | |
1930 ABORT("unsupported binary expression: %s", b.description().c_str()); | |
1931 } | |
1932 } | |
1933 | |
1934 SpvId SPIRVCodeGenerator::writeLogicalAnd(BinaryExpression& a, std::ostream& out ) { | |
1935 ASSERT(a.fOperator == Token::LOGICALAND); | |
1936 BoolLiteral falseLiteral(Position(), false); | |
1937 SpvId falseConstant = this->writeBoolLiteral(falseLiteral); | |
1938 SpvId lhs = this->writeExpression(*a.fLeft, out); | |
1939 SpvId rhsLabel = this->nextId(); | |
1940 SpvId end = this->nextId(); | |
1941 SpvId lhsBlock = fCurrentBlock; | |
1942 this->writeInstruction(SpvOpSelectionMerge, end, SpvSelectionControlMaskNone , out); | |
1943 this->writeInstruction(SpvOpBranchConditional, lhs, rhsLabel, end, out); | |
1944 this->writeLabel(rhsLabel, out); | |
1945 SpvId rhs = this->writeExpression(*a.fRight, out); | |
1946 SpvId rhsBlock = fCurrentBlock; | |
1947 this->writeInstruction(SpvOpBranch, end, out); | |
1948 this->writeLabel(end, out); | |
1949 SpvId result = this->nextId(); | |
1950 this->writeInstruction(SpvOpPhi, this->getType(*kBool_Type), result, falseCo nstant, lhsBlock, | |
1951 rhs, rhsBlock, out); | |
1952 return result; | |
1953 } | |
1954 | |
1955 SpvId SPIRVCodeGenerator::writeLogicalOr(BinaryExpression& o, std::ostream& out) { | |
1956 ASSERT(o.fOperator == Token::LOGICALOR); | |
1957 BoolLiteral trueLiteral(Position(), true); | |
1958 SpvId trueConstant = this->writeBoolLiteral(trueLiteral); | |
1959 SpvId lhs = this->writeExpression(*o.fLeft, out); | |
1960 SpvId rhsLabel = this->nextId(); | |
1961 SpvId end = this->nextId(); | |
1962 SpvId lhsBlock = fCurrentBlock; | |
1963 this->writeInstruction(SpvOpSelectionMerge, end, SpvSelectionControlMaskNone , out); | |
1964 this->writeInstruction(SpvOpBranchConditional, lhs, end, rhsLabel, out); | |
1965 this->writeLabel(rhsLabel, out); | |
1966 SpvId rhs = this->writeExpression(*o.fRight, out); | |
1967 SpvId rhsBlock = fCurrentBlock; | |
1968 this->writeInstruction(SpvOpBranch, end, out); | |
1969 this->writeLabel(end, out); | |
1970 SpvId result = this->nextId(); | |
1971 this->writeInstruction(SpvOpPhi, this->getType(*kBool_Type), result, trueCon stant, lhsBlock, | |
1972 rhs, rhsBlock, out); | |
1973 return result; | |
1974 } | |
1975 | |
1976 SpvId SPIRVCodeGenerator::writeTernaryExpression(TernaryExpression& t, std::ostr eam& out) { | |
1977 SpvId test = this->writeExpression(*t.fTest, out); | |
1978 if (t.fIfTrue->isConstant() && t.fIfFalse->isConstant()) { | |
1979 // both true and false are constants, can just use OpSelect | |
1980 SpvId result = this->nextId(); | |
1981 SpvId trueId = this->writeExpression(*t.fIfTrue, out); | |
1982 SpvId falseId = this->writeExpression(*t.fIfFalse, out); | |
1983 this->writeInstruction(SpvOpSelect, this->getType(*t.fType), result, tes t, trueId, falseId, | |
1984 out); | |
1985 return result; | |
1986 } | |
1987 // was originally using OpPhi to choose the result, but for some reason that is crashing on | |
1988 // Adreno. Switched to storing the result in a temp variable as glslang does . | |
1989 SpvId var = this->nextId(); | |
1990 this->writeInstruction(SpvOpVariable, this->getPointerType(t.fType, SpvStora geClassFunction), | |
1991 var, SpvStorageClassFunction, out); | |
1992 SpvId trueLabel = this->nextId(); | |
1993 SpvId falseLabel = this->nextId(); | |
1994 SpvId end = this->nextId(); | |
1995 this->writeInstruction(SpvOpSelectionMerge, end, SpvSelectionControlMaskNone , out); | |
1996 this->writeInstruction(SpvOpBranchConditional, test, trueLabel, falseLabel, out); | |
1997 this->writeLabel(trueLabel, out); | |
1998 this->writeInstruction(SpvOpStore, var, this->writeExpression(*t.fIfTrue, ou t), out); | |
1999 this->writeInstruction(SpvOpBranch, end, out); | |
2000 this->writeLabel(falseLabel, out); | |
2001 this->writeInstruction(SpvOpStore, var, this->writeExpression(*t.fIfFalse, o ut), out); | |
2002 this->writeInstruction(SpvOpBranch, end, out); | |
2003 this->writeLabel(end, out); | |
2004 SpvId result = this->nextId(); | |
2005 this->writeInstruction(SpvOpLoad, this->getType(*t.fType), result, var, out) ; | |
2006 return result; | |
2007 } | |
2008 | |
2009 Expression* literal_1(const Type& type) { | |
2010 static IntLiteral int1(Position(), 1); | |
2011 static FloatLiteral float1(Position(), 1.0); | |
2012 if (type == *kInt_Type) { | |
2013 return &int1; | |
2014 } | |
2015 else if (type == *kFloat_Type) { | |
2016 return &float1; | |
2017 } else { | |
2018 ABORT("math is unsupported on type '%s'") | |
2019 } | |
2020 } | |
2021 | |
2022 SpvId SPIRVCodeGenerator::writePrefixExpression(PrefixExpression& p, std::ostrea m& out) { | |
2023 SpvId expr = this->writeExpression(*p.fOperand, out); | |
2024 if (p.fOperator == Token::MINUS) { | |
2025 SpvId result = this->nextId(); | |
2026 SpvId typeId = this->getType(*p.fType); | |
2027 if (is_float(*p.fType)) { | |
2028 this->writeInstruction(SpvOpFNegate, typeId, result, expr, out); | |
2029 } else if (is_signed(*p.fType)) { | |
2030 this->writeInstruction(SpvOpSNegate, typeId, result, expr, out); | |
2031 } else { | |
2032 ABORT("unsupported prefix expression %s", p.description().c_str()); | |
2033 }; | |
2034 return result; | |
2035 } | |
2036 switch (p.fOperator) { | |
2037 case Token::PLUS: | |
2038 return expr; | |
2039 case Token::PLUSPLUS: { | |
2040 SpvId one = this->writeExpression(*literal_1(*p.fType), out); | |
2041 SpvId result = this->writeBinaryOperation(*p.fType, *p.fType, expr, one, SpvOpFAdd, | |
2042 SpvOpIAdd, SpvOpIAdd, SpvO pUndef, out); | |
2043 this->storeToLValue(*p.fOperand, result, out); | |
2044 return result; | |
2045 } | |
2046 case Token::MINUSMINUS: { | |
2047 SpvId one = this->writeExpression(*literal_1(*p.fType), out); | |
2048 SpvId result = this->writeBinaryOperation(*p.fType, *p.fType, expr, one, SpvOpFSub, | |
2049 SpvOpISub, SpvOpISub, SpvO pUndef, out); | |
2050 this->storeToLValue(*p.fOperand, result, out); | |
2051 return result; | |
2052 } | |
2053 case Token::NOT: { | |
2054 ASSERT(p.fOperand->fType == kBool_Type); | |
2055 SpvId result = this->nextId(); | |
2056 this->writeInstruction(SpvOpLogicalNot, this->getType(*p.fOperand->f Type), result, | |
2057 this->writeExpression(*p.fOperand, out), out) ; | |
2058 return result; | |
2059 } | |
2060 default: | |
2061 ABORT("unsupported prefix expression: %s", p.description().c_str()); | |
2062 } | |
2063 } | |
2064 | |
2065 SpvId SPIRVCodeGenerator::writePostfixExpression(PostfixExpression& p, std::ostr eam& out) { | |
2066 SpvId result = this->writeExpression(*p.fOperand, out); | |
2067 SpvId one = this->writeExpression(*literal_1(*p.fType), out); | |
2068 switch (p.fOperator) { | |
2069 case Token::PLUSPLUS: { | |
2070 SpvId temp = this->writeBinaryOperation(*p.fType, *p.fType, result, one, SpvOpFAdd, | |
2071 SpvOpIAdd, SpvOpIAdd, SpvOpU ndef, out); | |
2072 this->storeToLValue(*p.fOperand, temp, out); | |
2073 return result; | |
2074 } | |
2075 case Token::MINUSMINUS: { | |
2076 SpvId temp = this->writeBinaryOperation(*p.fType, *p.fType, result, one, SpvOpFSub, | |
2077 SpvOpISub, SpvOpISub, SpvOpU ndef, out); | |
2078 this->storeToLValue(*p.fOperand, temp, out); | |
2079 return result; | |
2080 } | |
2081 default: | |
2082 ABORT("unsupported postfix expression %s", p.description().c_str()); | |
2083 } | |
2084 } | |
2085 | |
2086 SpvId SPIRVCodeGenerator::writeBoolLiteral(BoolLiteral& b) { | |
2087 if (b.fValue) { | |
2088 if (fBoolTrue == 0) { | |
2089 fBoolTrue = this->nextId(); | |
2090 this->writeInstruction(SpvOpConstantTrue, this->getType(*b.fType), f BoolTrue, | |
2091 fConstantBuffer); | |
2092 } | |
2093 return fBoolTrue; | |
2094 } else { | |
2095 if (fBoolFalse == 0) { | |
2096 fBoolFalse = this->nextId(); | |
2097 this->writeInstruction(SpvOpConstantFalse, this->getType(*b.fType), fBoolFalse, | |
2098 fConstantBuffer); | |
2099 } | |
2100 return fBoolFalse; | |
2101 } | |
2102 } | |
2103 | |
2104 SpvId SPIRVCodeGenerator::writeIntLiteral(IntLiteral& i) { | |
2105 if (i.fType == kInt_Type) { | |
2106 auto entry = fIntConstants.find(i.fValue); | |
2107 if (entry == fIntConstants.end()) { | |
2108 SpvId result = this->nextId(); | |
2109 this->writeInstruction(SpvOpConstant, this->getType(*i.fType), resul t, (SpvId) i.fValue, | |
2110 fConstantBuffer); | |
2111 fIntConstants[i.fValue] = result; | |
2112 return result; | |
2113 } | |
2114 return entry->second; | |
2115 } else { | |
2116 ASSERT(i.fType == kUInt_Type); | |
2117 auto entry = fUIntConstants.find(i.fValue); | |
2118 if (entry == fUIntConstants.end()) { | |
2119 SpvId result = this->nextId(); | |
2120 this->writeInstruction(SpvOpConstant, this->getType(*i.fType), resul t, (SpvId) i.fValue, | |
2121 fConstantBuffer); | |
2122 fUIntConstants[i.fValue] = result; | |
2123 return result; | |
2124 } | |
2125 return entry->second; | |
2126 } | |
2127 } | |
2128 | |
2129 SpvId SPIRVCodeGenerator::writeFloatLiteral(FloatLiteral& f) { | |
2130 if (f.fType == kFloat_Type) { | |
2131 float value = (float) f.fValue; | |
2132 auto entry = fFloatConstants.find(value); | |
2133 if (entry == fFloatConstants.end()) { | |
2134 SpvId result = this->nextId(); | |
2135 uint32_t bits; | |
2136 ASSERT(sizeof(bits) == sizeof(value)); | |
2137 memcpy(&bits, &value, sizeof(bits)); | |
2138 this->writeInstruction(SpvOpConstant, this->getType(*f.fType), resul t, bits, | |
2139 fConstantBuffer); | |
2140 fFloatConstants[value] = result; | |
2141 return result; | |
2142 } | |
2143 return entry->second; | |
2144 } else { | |
2145 ASSERT(f.fType == kDouble_Type); | |
2146 auto entry = fDoubleConstants.find(f.fValue); | |
2147 if (entry == fDoubleConstants.end()) { | |
2148 SpvId result = this->nextId(); | |
2149 uint64_t bits; | |
2150 ASSERT(sizeof(bits) == sizeof(f.fValue)); | |
2151 memcpy(&bits, &f.fValue, sizeof(bits)); | |
2152 this->writeInstruction(SpvOpConstant, this->getType(*f.fType), resul t, | |
2153 bits & 0xffffffff, bits >> 32, fConstantBuffe r); | |
2154 fDoubleConstants[f.fValue] = result; | |
2155 return result; | |
2156 } | |
2157 return entry->second; | |
2158 } | |
2159 } | |
2160 | |
2161 SpvId SPIRVCodeGenerator::writeFunctionStart(std::shared_ptr<FunctionDeclaration > f, | |
2162 std::ostream& out) { | |
2163 SpvId result = fFunctionMap[f]; | |
2164 this->writeInstruction(SpvOpFunction, this->getType(*f->fReturnType), result , | |
2165 SpvFunctionControlMaskNone, this->getFunctionType(f), out); | |
2166 this->writeInstruction(SpvOpName, result, f->fName.c_str(), fNameBuffer); | |
2167 for (size_t i = 0; i < f->fParameters.size(); i++) { | |
2168 SpvId id = this->nextId(); | |
2169 fVariableMap[f->fParameters[i]] = id; | |
2170 SpvId type; | |
2171 type = this->getPointerType(f->fParameters[i]->fType, SpvStorageClassFun ction); | |
2172 this->writeInstruction(SpvOpFunctionParameter, type, id, out); | |
2173 } | |
2174 return result; | |
2175 } | |
2176 | |
2177 SpvId SPIRVCodeGenerator::writeFunction(FunctionDefinition& f, std::ostream& out ) { | |
2178 SpvId result = this->writeFunctionStart(f.fDeclaration, out); | |
2179 this->writeLabel(this->nextId(), out); | |
2180 if (f.fDeclaration->fName == "main") { | |
2181 out << fGlobalInitializersBuffer.str(); | |
2182 } | |
2183 std::stringstream bodyBuffer; | |
2184 this->writeBlock(*f.fBody, bodyBuffer); | |
2185 out << fVariableBuffer.str(); | |
2186 fVariableBuffer.str(""); | |
2187 out << bodyBuffer.str(); | |
2188 if (fCurrentBlock) { | |
2189 this->writeInstruction(SpvOpReturn, out); | |
2190 } | |
2191 this->writeInstruction(SpvOpFunctionEnd, out); | |
2192 return result; | |
2193 } | |
2194 | |
2195 void SPIRVCodeGenerator::writeLayout(const Layout& layout, SpvId target) { | |
2196 if (layout.fLocation >= 0) { | |
2197 this->writeInstruction(SpvOpDecorate, target, SpvDecorationLocation, lay out.fLocation, | |
2198 fDecorationBuffer); | |
2199 } | |
2200 if (layout.fBinding >= 0) { | |
2201 this->writeInstruction(SpvOpDecorate, target, SpvDecorationBinding, layo ut.fBinding, | |
2202 fDecorationBuffer); | |
2203 } | |
2204 if (layout.fIndex >= 0) { | |
2205 this->writeInstruction(SpvOpDecorate, target, SpvDecorationIndex, layout .fIndex, | |
2206 fDecorationBuffer); | |
2207 } | |
2208 if (layout.fSet >= 0) { | |
2209 this->writeInstruction(SpvOpDecorate, target, SpvDecorationDescriptorSet , layout.fSet, | |
2210 fDecorationBuffer); | |
2211 } | |
2212 if (layout.fBuiltin >= 0) { | |
2213 this->writeInstruction(SpvOpDecorate, target, SpvDecorationBuiltIn, layo ut.fBuiltin, | |
2214 fDecorationBuffer); | |
2215 } | |
2216 } | |
2217 | |
2218 void SPIRVCodeGenerator::writeLayout(const Layout& layout, SpvId target, int mem ber) { | |
2219 if (layout.fLocation >= 0) { | |
2220 this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecoratio nLocation, | |
2221 layout.fLocation, fDecorationBuffer); | |
2222 } | |
2223 if (layout.fBinding >= 0) { | |
2224 this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecoratio nBinding, | |
2225 layout.fBinding, fDecorationBuffer); | |
2226 } | |
2227 if (layout.fIndex >= 0) { | |
2228 this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecoratio nIndex, | |
2229 layout.fIndex, fDecorationBuffer); | |
2230 } | |
2231 if (layout.fSet >= 0) { | |
2232 this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecoratio nDescriptorSet, | |
2233 layout.fSet, fDecorationBuffer); | |
2234 } | |
2235 if (layout.fBuiltin >= 0) { | |
2236 this->writeInstruction(SpvOpMemberDecorate, target, member, SpvDecoratio nBuiltIn, | |
2237 layout.fBuiltin, fDecorationBuffer); | |
2238 } | |
2239 } | |
2240 | |
2241 SpvId SPIRVCodeGenerator::writeInterfaceBlock(InterfaceBlock& intf) { | |
2242 SpvId type = this->getType(*intf.fVariable->fType); | |
2243 SpvId result = this->nextId(); | |
2244 this->writeInstruction(SpvOpDecorate, type, SpvDecorationBlock, fDecorationB uffer); | |
2245 SpvStorageClass_ storageClass = get_storage_class(intf.fVariable->fModifiers ); | |
2246 SpvId ptrType = this->nextId(); | |
2247 this->writeInstruction(SpvOpTypePointer, ptrType, storageClass, type, fConst antBuffer); | |
2248 this->writeInstruction(SpvOpVariable, ptrType, result, storageClass, fConsta ntBuffer); | |
2249 this->writeLayout(intf.fVariable->fModifiers.fLayout, result); | |
2250 fVariableMap[intf.fVariable] = result; | |
2251 return result; | |
2252 } | |
2253 | |
2254 void SPIRVCodeGenerator::writeGlobalVars(VarDeclaration& decl, std::ostream& out ) { | |
2255 for (size_t i = 0; i < decl.fVars.size(); i++) { | |
2256 if (!decl.fVars[i]->fIsReadFrom && !decl.fVars[i]->fIsWrittenTo) { | |
2257 continue; | |
2258 } | |
2259 SpvStorageClass_ storageClass; | |
2260 if (decl.fVars[i]->fModifiers.fFlags & Modifiers::kIn_Flag) { | |
2261 storageClass = SpvStorageClassInput; | |
2262 } else if (decl.fVars[i]->fModifiers.fFlags & Modifiers::kOut_Flag) { | |
2263 storageClass = SpvStorageClassOutput; | |
2264 } else if (decl.fVars[i]->fModifiers.fFlags & Modifiers::kUniform_Flag) { | |
2265 if (decl.fVars[i]->fType->kind() == Type::kSampler_Kind) { | |
2266 storageClass = SpvStorageClassUniformConstant; | |
2267 } else { | |
2268 storageClass = SpvStorageClassUniform; | |
2269 } | |
2270 } else { | |
2271 storageClass = SpvStorageClassPrivate; | |
2272 } | |
2273 SpvId id = this->nextId(); | |
2274 fVariableMap[decl.fVars[i]] = id; | |
2275 SpvId type = this->getPointerType(decl.fVars[i]->fType, storageClass); | |
2276 this->writeInstruction(SpvOpVariable, type, id, storageClass, fConstantB uffer); | |
2277 this->writeInstruction(SpvOpName, id, decl.fVars[i]->fName.c_str(), fNam eBuffer); | |
2278 if (decl.fVars[i]->fType->kind() == Type::kMatrix_Kind) { | |
2279 this->writeInstruction(SpvOpMemberDecorate, id, (SpvId) i, SpvDecora tionColMajor, | |
2280 fDecorationBuffer); | |
2281 this->writeInstruction(SpvOpMemberDecorate, id, (SpvId) i, SpvDecora tionMatrixStride, | |
2282 (SpvId) decl.fVars[i]->fType->stride(), fDeco rationBuffer); | |
2283 } | |
2284 if (decl.fValues[i]) { | |
2285 ASSERT(!fCurrentBlock); | |
2286 fCurrentBlock = -1; | |
2287 SpvId value = this->writeExpression(*decl.fValues[i], fGlobalInitial izersBuffer); | |
2288 this->writeInstruction(SpvOpStore, id, value, fGlobalInitializersBuf fer); | |
2289 fCurrentBlock = 0; | |
2290 } | |
2291 this->writeLayout(decl.fVars[i]->fModifiers.fLayout, id); | |
2292 } | |
2293 } | |
2294 | |
2295 void SPIRVCodeGenerator::writeVarDeclaration(VarDeclaration& decl, std::ostream& out) { | |
2296 for (size_t i = 0; i < decl.fVars.size(); i++) { | |
2297 SpvId id = this->nextId(); | |
2298 fVariableMap[decl.fVars[i]] = id; | |
2299 SpvId type = this->getPointerType(decl.fVars[i]->fType, SpvStorageClassF unction); | |
2300 this->writeInstruction(SpvOpVariable, type, id, SpvStorageClassFunction, fVariableBuffer); | |
2301 this->writeInstruction(SpvOpName, id, decl.fVars[i]->fName.c_str(), fNam eBuffer); | |
2302 if (decl.fValues[i]) { | |
2303 SpvId value = this->writeExpression(*decl.fValues[i], out); | |
2304 this->writeInstruction(SpvOpStore, id, value, out); | |
2305 } | |
2306 } | |
2307 } | |
2308 | |
2309 void SPIRVCodeGenerator::writeStatement(Statement& s, std::ostream& out) { | |
2310 switch (s.fKind) { | |
2311 case Statement::kBlock_Kind: | |
2312 this->writeBlock((Block&) s, out); | |
2313 break; | |
2314 case Statement::kExpression_Kind: | |
2315 this->writeExpression(*((ExpressionStatement&) s).fExpression, out); | |
2316 break; | |
2317 case Statement::kReturn_Kind: | |
2318 this->writeReturnStatement((ReturnStatement&) s, out); | |
2319 break; | |
2320 case Statement::kVarDeclaration_Kind: | |
2321 this->writeVarDeclaration(*((VarDeclarationStatement&) s).fDeclarati on, out); | |
2322 break; | |
2323 case Statement::kIf_Kind: | |
2324 this->writeIfStatement((IfStatement&) s, out); | |
2325 break; | |
2326 case Statement::kFor_Kind: | |
2327 this->writeForStatement((ForStatement&) s, out); | |
2328 break; | |
2329 case Statement::kBreak_Kind: | |
2330 this->writeInstruction(SpvOpBranch, fBreakTarget.top(), out); | |
2331 break; | |
2332 case Statement::kContinue_Kind: | |
2333 this->writeInstruction(SpvOpBranch, fContinueTarget.top(), out); | |
2334 break; | |
2335 case Statement::kDiscard_Kind: | |
2336 this->writeInstruction(SpvOpKill, out); | |
2337 break; | |
2338 default: | |
2339 ABORT("unsupported statement: %s", s.description().c_str()); | |
2340 } | |
2341 } | |
2342 | |
2343 void SPIRVCodeGenerator::writeBlock(Block& b, std::ostream& out) { | |
2344 for (size_t i = 0; i < b.fStatements.size(); i++) { | |
2345 this->writeStatement(*b.fStatements[i], out); | |
2346 } | |
2347 } | |
2348 | |
2349 void SPIRVCodeGenerator::writeIfStatement(IfStatement& stmt, std::ostream& out) { | |
2350 SpvId test = this->writeExpression(*stmt.fTest, out); | |
2351 SpvId ifTrue = this->nextId(); | |
2352 SpvId ifFalse = this->nextId(); | |
2353 if (stmt.fIfFalse) { | |
2354 SpvId end = this->nextId(); | |
2355 this->writeInstruction(SpvOpSelectionMerge, end, SpvSelectionControlMask None, out); | |
2356 this->writeInstruction(SpvOpBranchConditional, test, ifTrue, ifFalse, ou t); | |
2357 this->writeLabel(ifTrue, out); | |
2358 this->writeStatement(*stmt.fIfTrue, out); | |
2359 if (fCurrentBlock) { | |
2360 this->writeInstruction(SpvOpBranch, end, out); | |
2361 } | |
2362 this->writeLabel(ifFalse, out); | |
2363 this->writeStatement(*stmt.fIfFalse, out); | |
2364 if (fCurrentBlock) { | |
2365 this->writeInstruction(SpvOpBranch, end, out); | |
2366 } | |
2367 this->writeLabel(end, out); | |
2368 } else { | |
2369 this->writeInstruction(SpvOpSelectionMerge, ifFalse, SpvSelectionControl MaskNone, out); | |
2370 this->writeInstruction(SpvOpBranchConditional, test, ifTrue, ifFalse, ou t); | |
2371 this->writeLabel(ifTrue, out); | |
2372 this->writeStatement(*stmt.fIfTrue, out); | |
2373 if (fCurrentBlock) { | |
2374 this->writeInstruction(SpvOpBranch, ifFalse, out); | |
2375 } | |
2376 this->writeLabel(ifFalse, out); | |
2377 } | |
2378 } | |
2379 | |
2380 void SPIRVCodeGenerator::writeForStatement(ForStatement& f, std::ostream& out) { | |
2381 if (f.fInitializer) { | |
2382 this->writeStatement(*f.fInitializer, out); | |
2383 } | |
2384 SpvId header = this->nextId(); | |
2385 SpvId start = this->nextId(); | |
2386 SpvId body = this->nextId(); | |
2387 SpvId next = this->nextId(); | |
2388 fContinueTarget.push(next); | |
2389 SpvId end = this->nextId(); | |
2390 fBreakTarget.push(end); | |
2391 this->writeInstruction(SpvOpBranch, header, out); | |
2392 this->writeLabel(header, out); | |
2393 this->writeInstruction(SpvOpLoopMerge, end, next, SpvLoopControlMaskNone, ou t); | |
2394 this->writeInstruction(SpvOpBranch, start, out); | |
2395 this->writeLabel(start, out); | |
2396 SpvId test = this->writeExpression(*f.fTest, out); | |
2397 this->writeInstruction(SpvOpBranchConditional, test, body, end, out); | |
2398 this->writeLabel(body, out); | |
2399 this->writeStatement(*f.fStatement, out); | |
2400 if (fCurrentBlock) { | |
2401 this->writeInstruction(SpvOpBranch, next, out); | |
2402 } | |
2403 this->writeLabel(next, out); | |
2404 if (f.fNext) { | |
2405 this->writeExpression(*f.fNext, out); | |
2406 } | |
2407 this->writeInstruction(SpvOpBranch, header, out); | |
2408 this->writeLabel(end, out); | |
2409 fBreakTarget.pop(); | |
2410 fContinueTarget.pop(); | |
2411 } | |
2412 | |
2413 void SPIRVCodeGenerator::writeReturnStatement(ReturnStatement& r, std::ostream& out) { | |
2414 if (r.fExpression) { | |
2415 this->writeInstruction(SpvOpReturnValue, this->writeExpression(*r.fExpre ssion, out), | |
2416 out); | |
2417 } else { | |
2418 this->writeInstruction(SpvOpReturn, out); | |
2419 } | |
2420 } | |
2421 | |
2422 void SPIRVCodeGenerator::writeInstructions(Program& program, std::ostream& out) { | |
2423 fGLSLExtendedInstructions = this->nextId(); | |
2424 std::stringstream body; | |
2425 std::vector<SpvId> interfaceVars; | |
2426 // assign IDs to functions | |
2427 for (size_t i = 0; i < program.fElements.size(); i++) { | |
2428 if (program.fElements[i]->fKind == ProgramElement::kFunction_Kind) { | |
2429 FunctionDefinition& f = (FunctionDefinition&) *program.fElements[i]; | |
2430 fFunctionMap[f.fDeclaration] = this->nextId(); | |
2431 } | |
2432 } | |
2433 for (size_t i = 0; i < program.fElements.size(); i++) { | |
2434 if (program.fElements[i]->fKind == ProgramElement::kInterfaceBlock_Kind) { | |
2435 InterfaceBlock& intf = (InterfaceBlock&) *program.fElements[i]; | |
2436 SpvId id = this->writeInterfaceBlock(intf); | |
2437 if ((intf.fVariable->fModifiers.fFlags & Modifiers::kIn_Flag) || | |
2438 (intf.fVariable->fModifiers.fFlags & Modifiers::kOut_Flag)) { | |
2439 interfaceVars.push_back(id); | |
2440 } | |
2441 } | |
2442 } | |
2443 for (size_t i = 0; i < program.fElements.size(); i++) { | |
2444 if (program.fElements[i]->fKind == ProgramElement::kVar_Kind) { | |
2445 this->writeGlobalVars(((VarDeclaration&) *program.fElements[i]), bod y); | |
2446 } | |
2447 } | |
2448 for (size_t i = 0; i < program.fElements.size(); i++) { | |
2449 if (program.fElements[i]->fKind == ProgramElement::kFunction_Kind) { | |
2450 this->writeFunction(((FunctionDefinition&) *program.fElements[i]), b ody); | |
2451 } | |
2452 } | |
2453 std::shared_ptr<FunctionDeclaration> main = nullptr; | |
2454 for (auto entry : fFunctionMap) { | |
2455 if (entry.first->fName == "main") { | |
2456 main = entry.first; | |
2457 } | |
2458 } | |
2459 ASSERT(main); | |
2460 for (auto entry : fVariableMap) { | |
2461 std::shared_ptr<Variable> var = entry.first; | |
2462 if (var->fStorage == Variable::kGlobal_Storage && | |
2463 ((var->fModifiers.fFlags & Modifiers::kIn_Flag) || | |
2464 (var->fModifiers.fFlags & Modifiers::kOut_Flag))) { | |
2465 interfaceVars.push_back(entry.second); | |
2466 } | |
2467 } | |
2468 this->writeCapabilities(out); | |
2469 this->writeInstruction(SpvOpExtInstImport, fGLSLExtendedInstructions, "GLSL. std.450", out); | |
2470 this->writeInstruction(SpvOpMemoryModel, SpvAddressingModelLogical, SpvMemor yModelGLSL450, out); | |
2471 this->writeOpCode(SpvOpEntryPoint, (SpvId) (3 + (strlen(main->fName.c_str()) + 4) / 4) + | |
2472 (int32_t) interfaceVars.size(), out); | |
2473 switch (program.fKind) { | |
2474 case Program::kVertex_Kind: | |
2475 this->writeWord(SpvExecutionModelVertex, out); | |
2476 break; | |
2477 case Program::kFragment_Kind: | |
2478 this->writeWord(SpvExecutionModelFragment, out); | |
2479 break; | |
2480 } | |
2481 this->writeWord(fFunctionMap[main], out); | |
2482 this->writeString(main->fName.c_str(), out); | |
2483 for (int var : interfaceVars) { | |
2484 this->writeWord(var, out); | |
2485 } | |
2486 if (program.fKind == Program::kFragment_Kind) { | |
2487 this->writeInstruction(SpvOpExecutionMode, | |
2488 fFunctionMap[main], | |
2489 SpvExecutionModeOriginUpperLeft, | |
2490 out); | |
2491 } | |
2492 for (size_t i = 0; i < program.fElements.size(); i++) { | |
2493 if (program.fElements[i]->fKind == ProgramElement::kExtension_Kind) { | |
2494 this->writeInstruction(SpvOpSourceExtension, | |
2495 ((Extension&) *program.fElements[i]).fName.c_ str(), | |
2496 out); | |
2497 } | |
2498 } | |
2499 | |
2500 out << fNameBuffer.str(); | |
2501 out << fDecorationBuffer.str(); | |
2502 out << fConstantBuffer.str(); | |
2503 out << fExternalFunctionsBuffer.str(); | |
2504 out << body.str(); | |
2505 } | |
2506 | |
2507 void SPIRVCodeGenerator::generateCode(Program& program, std::ostream& out) { | |
2508 this->writeWord(SpvMagicNumber, out); | |
2509 this->writeWord(SpvVersion, out); | |
2510 this->writeWord(SKSL_MAGIC, out); | |
2511 std::stringstream buffer; | |
2512 this->writeInstructions(program, buffer); | |
2513 this->writeWord(fIdCount, out); | |
2514 this->writeWord(0, out); // reserved, always zero | |
2515 out << buffer.str(); | |
2516 } | |
2517 | |
2518 } | |
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