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SpecOp bool->uint/int and uint<->int conversion
Bool -> uint/int with OpSpecConstantOp OpSelect instruction. uint <-> int conversion with OpSpecConstantOp OpIAdd instruction. Note, implicit conversion: `const uint = an_int_spec_constant` is not supported. Explicit type casting is required: `const uint = uint(an_int_spec_constant)`
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@ -1960,7 +1960,6 @@ spv::Id TGlslangToSpvTraverser::makeArraySizeId(const glslang::TArraySizes& arra
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glslang::TIntermTyped* specNode = arraySizes.getDimNode(dim);
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if (specNode != nullptr) {
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builder.clearAccessChain();
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// SpecConstantOpModeGuard set_to_spec_const_mode(&builder);
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specNode->traverse(this);
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return accessChainLoad(specNode->getAsTyped()->getType());
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}
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@ -3307,7 +3306,27 @@ spv::Id TGlslangToSpvTraverser::createConversion(glslang::TOperator op, spv::Dec
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break;
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case glslang::EOpConvUintToInt:
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if (builder.isInSpecConstCodeGenMode()) {
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// Build zero scalar or vector for OpIAdd to do the conversion when
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// generating for OpSpecConstantOp instruction.
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zero = builder.makeIntConstant(0);
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zero = makeSmearedConstant(zero, vectorSize);
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}
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// Don't 'break' here as this case should be grouped together with
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// EOpConvIntToUint when generating normal run-time conversion
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// instruction.
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case glslang::EOpConvIntToUint:
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if (builder.isInSpecConstCodeGenMode()) {
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// Build zero scalar or vector for OpIAdd.
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if (zero == 0) {
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zero = builder.makeUintConstant(0);
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zero = makeSmearedConstant(zero, vectorSize);
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}
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// Use OpIAdd, instead of OpBitcast to do the conversion when
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// generating for OpSpecConstantOp instruction.
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return builder.createBinOp(spv::OpIAdd, destType, operand, zero);
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}
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// For normal run-time conversion instruction, use OpBitcast.
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convOp = spv::OpBitcast;
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break;
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@ -1212,6 +1212,14 @@ Id Builder::createBinOp(Op opCode, Id typeId, Id left, Id right)
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Id Builder::createTriOp(Op opCode, Id typeId, Id op1, Id op2, Id op3)
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{
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// Generate code for spec constants if in spec constant operation
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// generation mode.
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if (generatingOpCodeForSpecConst) {
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std::vector<Id> operands(3);
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operands[0] = op1; operands[1] = op2; operands[2] = op3;
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return createSpecConstantOp(
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opCode, typeId, operands, std::vector<Id>());
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}
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Instruction* op = new Instruction(getUniqueId(), typeId, opCode);
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op->addIdOperand(op1);
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op->addIdOperand(op2);
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@ -7,7 +7,7 @@ Linked vertex stage:
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// Module Version 10000
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// Generated by (magic number): 80001
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// Id's are bound by 101
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// Id's are bound by 134
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Capability Shader
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1: ExtInstImport "GLSL.std.450"
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@ -16,109 +16,152 @@ Linked vertex stage:
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Source GLSL 450
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Name 4 "main"
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Name 8 "non_const_array_size_from_spec_const("
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Name 15 "array"
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Decorate 10 SpecId 201
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Decorate 24 SpecId 200
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Decorate 26 SpecId 202
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Decorate 27 SpecId 203
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Name 11 "i"
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Name 27 "array"
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Decorate 19 SpecId 201
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Decorate 40 SpecId 200
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Decorate 42 SpecId 202
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Decorate 43 SpecId 203
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2: TypeVoid
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3: TypeFunction 2
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6: TypeInt 32 1
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7: TypeFunction 6(int)
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10: 6(int) SpecConstant 10
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11: 6(int) Constant 2
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12: 6(int) SpecConstantOp 128 10 11
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13: TypeArray 6(int) 12
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14: TypePointer Function 13
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16: 6(int) Constant 1
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17: 6(int) SpecConstantOp 128 10 16
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18: TypePointer Function 6(int)
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23: TypeFloat 32
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24: 23(float) SpecConstant 1078530010
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25: TypeInt 32 0
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26: 25(int) SpecConstant 100
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27: 6(int) SpecConstant 4294967286
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28: 6(int) SpecConstantOp 126 10
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29: 6(int) SpecConstantOp 200 10
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30: 6(int) SpecConstantOp 128 10 11
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31: 6(int) SpecConstantOp 128 10 11
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32: 6(int) Constant 3
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33: 6(int) SpecConstantOp 130 31 32
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34: 6(int) Constant 4
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35: 6(int) SpecConstantOp 130 30 34
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36: 6(int) SpecConstantOp 132 27 11
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37: 25(int) Constant 2
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38: 25(int) SpecConstantOp 132 26 37
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39: 6(int) Constant 5
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40: 6(int) SpecConstantOp 135 36 39
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41: 25(int) Constant 5
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42: 25(int) SpecConstantOp 134 38 41
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43: 6(int) SpecConstantOp 139 27 34
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44: 25(int) Constant 4
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45: 25(int) SpecConstantOp 137 26 44
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46: 6(int) SpecConstantOp 132 27 32
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47: 6(int) SpecConstantOp 135 46 39
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48: 6(int) Constant 10
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49: 6(int) SpecConstantOp 195 27 48
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50: 6(int) Constant 20
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51: 25(int) SpecConstantOp 194 26 50
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52: 6(int) SpecConstantOp 196 27 16
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53: 25(int) SpecConstantOp 196 26 11
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54: 6(int) Constant 256
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55: 6(int) SpecConstantOp 197 27 54
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56: 25(int) Constant 512
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57: 25(int) SpecConstantOp 198 26 56
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58: TypeBool
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59: 58(bool) SpecConstantOp 177 10 27
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60: 58(bool) SpecConstantOp 170 26 26
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61: 58(bool) SpecConstantOp 173 10 27
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62: TypeVector 6(int) 4
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63: 6(int) Constant 30
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64: 62(ivec4) SpecConstantComposite 50 63 10 10
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65: TypeVector 25(int) 4
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66: 25(int) Constant 4294967295
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67: 25(int) Constant 4294967294
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68: 65(ivec4) SpecConstantComposite 26 26 66 67
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69: TypeVector 23(float) 4
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70: 23(float) Constant 1067450368
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71: 69(fvec4) SpecConstantComposite 24 70 24 70
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72: 62(ivec4) SpecConstantOp 200 64
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73: 62(ivec4) SpecConstantOp 126 64
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74: 62(ivec4) ConstantComposite 11 11 11 11
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75: 62(ivec4) SpecConstantOp 128 64 74
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76: 62(ivec4) SpecConstantOp 128 64 74
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77: 62(ivec4) ConstantComposite 32 32 32 32
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78: 62(ivec4) SpecConstantOp 130 76 77
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79: 62(ivec4) ConstantComposite 34 34 34 34
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80: 62(ivec4) SpecConstantOp 130 78 79
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81: 62(ivec4) SpecConstantOp 132 64 74
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82: 62(ivec4) ConstantComposite 39 39 39 39
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83: 62(ivec4) SpecConstantOp 135 81 82
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84: 62(ivec4) SpecConstantOp 139 64 79
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85: 62(ivec4) ConstantComposite 48 48 48 48
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86: 62(ivec4) SpecConstantOp 195 64 85
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87: 62(ivec4) SpecConstantOp 196 64 74
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88: 6(int) Constant 1024
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89: 62(ivec4) ConstantComposite 88 88 88 88
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90: 62(ivec4) SpecConstantOp 197 64 89
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91: 25(int) Constant 2048
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92: 65(ivec4) ConstantComposite 91 91 91 91
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93: 65(ivec4) SpecConstantOp 198 68 92
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94: 25(int) Constant 0
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95: 6(int) SpecConstantOp 81 64 0
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96: TypeVector 6(int) 2
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97: 96(ivec2) SpecConstantOp 79 64 64 1(GLSL.std.450) 0
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98: TypeVector 6(int) 3
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99: 98(ivec3) SpecConstantOp 79 64 64 2 1(GLSL.std.450) 0
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100: 62(ivec4) SpecConstantOp 79 64 64 1(GLSL.std.450) 2 0 3
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10: TypePointer Function 6(int)
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12: 6(int) Constant 0
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19: 6(int) SpecConstant 10
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20: 6(int) Constant 2
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21: 6(int) SpecConstantOp 128 19 20
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22: TypeBool
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24: 6(int) SpecConstantOp 128 19 20
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25: TypeArray 6(int) 24
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26: TypePointer Function 25
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29: 6(int) Constant 1023
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32: 6(int) Constant 1
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34: 6(int) SpecConstantOp 128 19 32
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39: TypeFloat 32
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40: 39(float) SpecConstant 1078530010
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41: TypeInt 32 0
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42: 41(int) SpecConstant 100
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43: 6(int) SpecConstant 4294967286
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44: 41(int) Constant 0
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45: 22(bool) SpecConstantOp 171 19 44
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46: 22(bool) SpecConstantOp 171 42 44
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47: 6(int) SpecConstantOp 169 45 32 12
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48: 41(int) Constant 1
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49: 41(int) SpecConstantOp 169 45 48 44
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50: 41(int) SpecConstantOp 128 43 44
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51: 6(int) SpecConstantOp 128 42 12
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52: 6(int) SpecConstantOp 126 19
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53: 6(int) SpecConstantOp 200 19
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54: 6(int) SpecConstantOp 128 19 20
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55: 6(int) SpecConstantOp 128 19 20
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56: 6(int) Constant 3
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57: 6(int) SpecConstantOp 130 55 56
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58: 6(int) Constant 4
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59: 6(int) SpecConstantOp 130 54 58
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60: 6(int) SpecConstantOp 132 43 20
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61: 41(int) Constant 2
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62: 41(int) SpecConstantOp 132 42 61
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63: 6(int) Constant 5
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64: 6(int) SpecConstantOp 135 60 63
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65: 41(int) Constant 5
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66: 41(int) SpecConstantOp 134 62 65
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67: 6(int) SpecConstantOp 139 43 58
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68: 41(int) Constant 4
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69: 41(int) SpecConstantOp 137 42 68
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70: 6(int) SpecConstantOp 132 43 56
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71: 6(int) SpecConstantOp 135 70 63
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72: 6(int) Constant 10
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73: 6(int) SpecConstantOp 195 43 72
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74: 6(int) Constant 20
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75: 41(int) SpecConstantOp 194 42 74
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76: 6(int) SpecConstantOp 196 43 32
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77: 41(int) SpecConstantOp 196 42 20
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78: 6(int) Constant 256
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79: 6(int) SpecConstantOp 197 43 78
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80: 41(int) Constant 512
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81: 41(int) SpecConstantOp 198 42 80
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82: 22(bool) SpecConstantOp 177 19 43
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83: 22(bool) SpecConstantOp 170 42 42
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84: 22(bool) SpecConstantOp 173 19 43
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85: TypeVector 6(int) 4
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86: 6(int) Constant 30
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87: 85(ivec4) SpecConstantComposite 74 86 19 19
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88: TypeVector 41(int) 4
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89: 41(int) Constant 4294967295
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90: 41(int) Constant 4294967294
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91: 88(ivec4) SpecConstantComposite 42 42 89 90
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92: TypeVector 39(float) 4
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93: 39(float) Constant 1067450368
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94: 92(fvec4) SpecConstantComposite 40 93 40 93
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95: TypeVector 22(bool) 4
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96: 88(ivec4) ConstantComposite 44 44 44 44
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97: 95(bvec4) SpecConstantOp 171 87 96
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98: 95(bvec4) SpecConstantOp 171 91 96
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99: 85(ivec4) ConstantComposite 12 12 12 12
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100: 85(ivec4) ConstantComposite 32 32 32 32
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101: 85(ivec4) SpecConstantOp 169 97 100 99
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102: 88(ivec4) ConstantComposite 48 48 48 48
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103: 88(ivec4) SpecConstantOp 169 97 102 96
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104: 88(ivec4) SpecConstantOp 128 87 96
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105: 85(ivec4) SpecConstantOp 128 91 99
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106: 85(ivec4) SpecConstantOp 200 87
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107: 85(ivec4) SpecConstantOp 126 87
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108: 85(ivec4) ConstantComposite 20 20 20 20
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109: 85(ivec4) SpecConstantOp 128 87 108
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110: 85(ivec4) SpecConstantOp 128 87 108
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111: 85(ivec4) ConstantComposite 56 56 56 56
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112: 85(ivec4) SpecConstantOp 130 110 111
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113: 85(ivec4) ConstantComposite 58 58 58 58
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114: 85(ivec4) SpecConstantOp 130 112 113
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115: 85(ivec4) SpecConstantOp 132 87 108
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116: 85(ivec4) ConstantComposite 63 63 63 63
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117: 85(ivec4) SpecConstantOp 135 115 116
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118: 85(ivec4) SpecConstantOp 139 87 113
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119: 85(ivec4) ConstantComposite 72 72 72 72
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120: 85(ivec4) SpecConstantOp 195 87 119
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121: 85(ivec4) SpecConstantOp 196 87 108
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122: 6(int) Constant 1024
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123: 85(ivec4) ConstantComposite 122 122 122 122
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124: 85(ivec4) SpecConstantOp 197 87 123
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125: 41(int) Constant 2048
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126: 88(ivec4) ConstantComposite 125 125 125 125
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127: 88(ivec4) SpecConstantOp 198 91 126
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128: 6(int) SpecConstantOp 81 87 0
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129: TypeVector 6(int) 2
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130: 129(ivec2) SpecConstantOp 79 87 87 1(GLSL.std.450) 0
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131: TypeVector 6(int) 3
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132: 131(ivec3) SpecConstantOp 79 87 87 2 1(GLSL.std.450) 0
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133: 85(ivec4) SpecConstantOp 79 87 87 1(GLSL.std.450) 2 0 3
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4(main): 2 Function None 3
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5: Label
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Return
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FunctionEnd
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8(non_const_array_size_from_spec_const(): 6(int) Function None 7
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9: Label
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15(array): 14(ptr) Variable Function
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19: 18(ptr) AccessChain 15(array) 17
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20: 6(int) Load 19
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ReturnValue 20
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11(i): 10(ptr) Variable Function
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27(array): 26(ptr) Variable Function
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Store 11(i) 12
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Branch 13
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13: Label
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LoopMerge 15 16 None
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Branch 17
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17: Label
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18: 6(int) Load 11(i)
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23: 22(bool) SLessThan 18 21
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BranchConditional 23 14 15
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14: Label
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28: 6(int) Load 11(i)
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30: 10(ptr) AccessChain 27(array) 28
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Store 30 29
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Branch 16
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16: Label
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31: 6(int) Load 11(i)
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33: 6(int) IAdd 31 32
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Store 11(i) 33
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Branch 13
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15: Label
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35: 10(ptr) AccessChain 27(array) 34
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36: 6(int) Load 35
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ReturnValue 36
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FunctionEnd
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@ -10,9 +10,15 @@ layout(constant_id = 203) const int sp_sint = -10;
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// Scalars
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//
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// Size convert
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//const double float_to_double = double(sp_float);
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//const float double_to_float = float(float_to_double);
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// uint/int <-> bool conversion
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const bool bool_from_int = bool(sp_int);
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const bool bool_from_uint = bool(sp_uint);
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const int int_from_bool = int(bool_from_int);
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const uint uint_from_bool = uint(bool_from_int);
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// uint <-> int
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const uint sp_uint_from_sint = uint(sp_sint);
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const int sp_sint_from_uint = int(sp_uint);
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// Negate and Not
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const int negate_int = -sp_int;
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@ -54,9 +60,15 @@ const ivec4 iv = ivec4(20, 30, sp_int, sp_int);
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const uvec4 uv = uvec4(sp_uint, sp_uint, -1, -2);
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const vec4 fv = vec4(sp_float, 1.25, sp_float, 1.25);
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// Size convert
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//const dvec4 fv_to_dv = dvec4(fv);
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//const vec4 dv_to_fv = vec4(fv_to_dv);
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// uint/int <-> bool conversion
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const bvec4 bv_from_iv = bvec4(iv);
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const bvec4 bv_from_uv = bvec4(uv);
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const ivec4 iv_from_bv = ivec4(bv_from_iv);
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const uvec4 uv_from_bv = uvec4(bv_from_iv);
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// uint <-> int
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const uvec4 uv_from_iv = uvec4(iv);
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const ivec4 iv_from_uv = ivec4(uv);
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// Negate and Not
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const ivec4 not_iv = ~iv;
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@ -88,6 +100,9 @@ const ivec4 iv_yzxw = iv.yzxw;
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int non_const_array_size_from_spec_const() {
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int array[sp_int + 2];
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for (int i = 0; i < sp_int + 2; i++) {
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array[i] = 1023;
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}
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return array[sp_int + 1];
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}
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