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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkSLType.h"
#include "SkSLContext.h"
namespace SkSL {
bool Type::determineCoercionCost(const Type& other, int* outCost) const {
if (*this == other) {
*outCost = 0;
return true;
}
if (this->kind() == kVector_Kind && other.kind() == kVector_Kind) {
if (this->columns() == other.columns()) {
return this->componentType().determineCoercionCost(other.componentType(), outCost);
}
return false;
}
if (this->kind() == kMatrix_Kind) {
if (this->columns() == other.columns() &&
this->rows() == other.rows()) {
return this->componentType().determineCoercionCost(other.componentType(), outCost);
}
return false;
}
for (size_t i = 0; i < fCoercibleTypes.size(); i++) {
if (*fCoercibleTypes[i] == other) {
*outCost = (int) i + 1;
return true;
}
}
return false;
}
const Type& Type::toCompound(const Context& context, int columns, int rows) const {
ASSERT(this->kind() == Type::kScalar_Kind);
if (columns == 1 && rows == 1) {
return *this;
}
if (*this == *context.fFloat_Type) {
switch (rows) {
case 1:
switch (columns) {
case 2: return *context.fVec2_Type;
case 3: return *context.fVec3_Type;
case 4: return *context.fVec4_Type;
default: ABORT("unsupported vector column count (%d)", columns);
}
case 2:
switch (columns) {
case 2: return *context.fMat2x2_Type;
case 3: return *context.fMat3x2_Type;
case 4: return *context.fMat4x2_Type;
default: ABORT("unsupported matrix column count (%d)", columns);
}
case 3:
switch (columns) {
case 2: return *context.fMat2x3_Type;
case 3: return *context.fMat3x3_Type;
case 4: return *context.fMat4x3_Type;
default: ABORT("unsupported matrix column count (%d)", columns);
}
case 4:
switch (columns) {
case 2: return *context.fMat2x4_Type;
case 3: return *context.fMat3x4_Type;
case 4: return *context.fMat4x4_Type;
default: ABORT("unsupported matrix column count (%d)", columns);
}
default: ABORT("unsupported row count (%d)", rows);
}
} else if (*this == *context.fDouble_Type) {
switch (rows) {
case 1:
switch (columns) {
case 2: return *context.fDVec2_Type;
case 3: return *context.fDVec3_Type;
case 4: return *context.fDVec4_Type;
default: ABORT("unsupported vector column count (%d)", columns);
}
case 2:
switch (columns) {
case 2: return *context.fDMat2x2_Type;
case 3: return *context.fDMat3x2_Type;
case 4: return *context.fDMat4x2_Type;
default: ABORT("unsupported matrix column count (%d)", columns);
}
case 3:
switch (columns) {
case 2: return *context.fDMat2x3_Type;
case 3: return *context.fDMat3x3_Type;
case 4: return *context.fDMat4x3_Type;
default: ABORT("unsupported matrix column count (%d)", columns);
}
case 4:
switch (columns) {
case 2: return *context.fDMat2x4_Type;
case 3: return *context.fDMat3x4_Type;
case 4: return *context.fDMat4x4_Type;
default: ABORT("unsupported matrix column count (%d)", columns);
}
default: ABORT("unsupported row count (%d)", rows);
}
} else if (*this == *context.fInt_Type) {
switch (rows) {
case 1:
switch (columns) {
case 2: return *context.fIVec2_Type;
case 3: return *context.fIVec3_Type;
case 4: return *context.fIVec4_Type;
default: ABORT("unsupported vector column count (%d)", columns);
}
default: ABORT("unsupported row count (%d)", rows);
}
} else if (*this == *context.fUInt_Type) {
switch (rows) {
case 1:
switch (columns) {
case 2: return *context.fUVec2_Type;
case 3: return *context.fUVec3_Type;
case 4: return *context.fUVec4_Type;
default: ABORT("unsupported vector column count (%d)", columns);
}
default: ABORT("unsupported row count (%d)", rows);
}
}
ABORT("unsupported scalar_to_compound type %s", this->description().c_str());
}
} // namespace
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