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 "SkSLType.h" 9 #include "SkSLContext.h" 10 11 namespace SkSL { 12 13 bool Type::determineCoercionCost(const Type& other, int* outCost) const { 14 if (*this == other) { 15 *outCost = 0; 16 return true; 17 } 18 if (this->kind() == kVector_Kind && other.kind() == kVector_Kind) { 19 if (this->columns() == other.columns()) { 20 return this->componentType().determineCoercionCost(other.componentType(), outCost); 21 } 22 return false; 23 } 24 if (this->kind() == kMatrix_Kind) { 25 if (this->columns() == other.columns() && 26 this->rows() == other.rows()) { 27 return this->componentType().determineCoercionCost(other.componentType(), outCost); 28 } 29 return false; 30 } 31 for (size_t i = 0; i < fCoercibleTypes.size(); i++) { 32 if (*fCoercibleTypes[i] == other) { 33 *outCost = (int) i + 1; 34 return true; 35 } 36 } 37 return false; 38 } 39 40 const Type& Type::toCompound(const Context& context, int columns, int rows) const { 41 ASSERT(this->kind() == Type::kScalar_Kind); 42 if (columns == 1 && rows == 1) { 43 return *this; 44 } 45 if (*this == *context.fFloat_Type) { 46 switch (rows) { 47 case 1: 48 switch (columns) { 49 case 2: return *context.fVec2_Type; 50 case 3: return *context.fVec3_Type; 51 case 4: return *context.fVec4_Type; 52 default: ABORT("unsupported vector column count (%d)", columns); 53 } 54 case 2: 55 switch (columns) { 56 case 2: return *context.fMat2x2_Type; 57 case 3: return *context.fMat3x2_Type; 58 case 4: return *context.fMat4x2_Type; 59 default: ABORT("unsupported matrix column count (%d)", columns); 60 } 61 case 3: 62 switch (columns) { 63 case 2: return *context.fMat2x3_Type; 64 case 3: return *context.fMat3x3_Type; 65 case 4: return *context.fMat4x3_Type; 66 default: ABORT("unsupported matrix column count (%d)", columns); 67 } 68 case 4: 69 switch (columns) { 70 case 2: return *context.fMat2x4_Type; 71 case 3: return *context.fMat3x4_Type; 72 case 4: return *context.fMat4x4_Type; 73 default: ABORT("unsupported matrix column count (%d)", columns); 74 } 75 default: ABORT("unsupported row count (%d)", rows); 76 } 77 } else if (*this == *context.fDouble_Type) { 78 switch (rows) { 79 case 1: 80 switch (columns) { 81 case 2: return *context.fDVec2_Type; 82 case 3: return *context.fDVec3_Type; 83 case 4: return *context.fDVec4_Type; 84 default: ABORT("unsupported vector column count (%d)", columns); 85 } 86 case 2: 87 switch (columns) { 88 case 2: return *context.fDMat2x2_Type; 89 case 3: return *context.fDMat3x2_Type; 90 case 4: return *context.fDMat4x2_Type; 91 default: ABORT("unsupported matrix column count (%d)", columns); 92 } 93 case 3: 94 switch (columns) { 95 case 2: return *context.fDMat2x3_Type; 96 case 3: return *context.fDMat3x3_Type; 97 case 4: return *context.fDMat4x3_Type; 98 default: ABORT("unsupported matrix column count (%d)", columns); 99 } 100 case 4: 101 switch (columns) { 102 case 2: return *context.fDMat2x4_Type; 103 case 3: return *context.fDMat3x4_Type; 104 case 4: return *context.fDMat4x4_Type; 105 default: ABORT("unsupported matrix column count (%d)", columns); 106 } 107 default: ABORT("unsupported row count (%d)", rows); 108 } 109 } else if (*this == *context.fInt_Type) { 110 switch (rows) { 111 case 1: 112 switch (columns) { 113 case 2: return *context.fIVec2_Type; 114 case 3: return *context.fIVec3_Type; 115 case 4: return *context.fIVec4_Type; 116 default: ABORT("unsupported vector column count (%d)", columns); 117 } 118 default: ABORT("unsupported row count (%d)", rows); 119 } 120 } else if (*this == *context.fUInt_Type) { 121 switch (rows) { 122 case 1: 123 switch (columns) { 124 case 2: return *context.fUVec2_Type; 125 case 3: return *context.fUVec3_Type; 126 case 4: return *context.fUVec4_Type; 127 default: ABORT("unsupported vector column count (%d)", columns); 128 } 129 default: ABORT("unsupported row count (%d)", rows); 130 } 131 } else if (*this == *context.fBool_Type) { 132 switch (rows) { 133 case 1: 134 switch (columns) { 135 case 2: return *context.fBVec2_Type; 136 case 3: return *context.fBVec3_Type; 137 case 4: return *context.fBVec4_Type; 138 default: ABORT("unsupported vector column count (%d)", columns); 139 } 140 default: ABORT("unsupported row count (%d)", rows); 141 } 142 } 143 ABORT("unsupported scalar_to_compound type %s", this->description().c_str()); 144 } 145 146 } // namespace 147
