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path: root/src/sksl/SkSLGLSLCodeGenerator.cpp
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Diffstat (limited to 'src/sksl/SkSLGLSLCodeGenerator.cpp')
-rw-r--r--src/sksl/SkSLGLSLCodeGenerator.cpp111
1 files changed, 64 insertions, 47 deletions
diff --git a/src/sksl/SkSLGLSLCodeGenerator.cpp b/src/sksl/SkSLGLSLCodeGenerator.cpp
index 4326f4c794..36a43cf927 100644
--- a/src/sksl/SkSLGLSLCodeGenerator.cpp
+++ b/src/sksl/SkSLGLSLCodeGenerator.cpp
@@ -34,7 +34,7 @@ void GLSLCodeGenerator::write(const char* s) {
void GLSLCodeGenerator::writeLine(const char* s) {
this->write(s);
- fOut->write8('\n');
+ fOut->writeText(fLineEnding);
fAtLineStart = true;
}
@@ -108,6 +108,9 @@ void GLSLCodeGenerator::writeExpression(const Expression& expr, Precedence paren
case Expression::kPostfix_Kind:
this->writePostfixExpression((PostfixExpression&) expr, parentPrecedence);
break;
+ case Expression::kSetting_Kind:
+ this->writeSetting((Setting&) expr);
+ break;
case Expression::kSwizzle_Kind:
this->writeSwizzle((Swizzle&) expr);
break;
@@ -371,7 +374,7 @@ void GLSLCodeGenerator::writeSwizzle(const Swizzle& swizzle) {
}
}
-static GLSLCodeGenerator::Precedence get_binary_precedence(Token::Kind op) {
+GLSLCodeGenerator::Precedence GLSLCodeGenerator::GetBinaryPrecedence(Token::Kind op) {
switch (op) {
case Token::STAR: // fall through
case Token::SLASH: // fall through
@@ -413,7 +416,7 @@ static GLSLCodeGenerator::Precedence get_binary_precedence(Token::Kind op) {
void GLSLCodeGenerator::writeBinaryExpression(const BinaryExpression& b,
Precedence parentPrecedence) {
- Precedence precedence = get_binary_precedence(b.fOperator);
+ Precedence precedence = GetBinaryPrecedence(b.fOperator);
if (precedence >= parentPrecedence) {
this->write("(");
}
@@ -480,6 +483,10 @@ void GLSLCodeGenerator::writeFloatLiteral(const FloatLiteral& f) {
this->write(to_string(f.fValue));
}
+void GLSLCodeGenerator::writeSetting(const Setting& s) {
+ ABORT("internal error; setting was not folded to a constant during compilation\n");
+}
+
void GLSLCodeGenerator::writeFunction(const FunctionDefinition& f) {
this->writeType(f.fDeclaration.fReturnType);
this->write(" " + f.fDeclaration.fName + "(");
@@ -517,7 +524,7 @@ void GLSLCodeGenerator::writeFunction(const FunctionDefinition& f) {
fOut = oldOut;
this->write(fFunctionHeader);
- this->write(String(buffer.data(), buffer.size()));
+ this->write(buffer.str());
}
void GLSLCodeGenerator::writeModifiers(const Modifiers& modifiers,
@@ -617,6 +624,10 @@ void GLSLCodeGenerator::writeInterfaceBlock(const InterfaceBlock& intf) {
this->writeLine(";");
}
+void GLSLCodeGenerator::writeVarInitializer(const Variable& var, const Expression& value) {
+ this->writeExpression(value, kTopLevel_Precedence);
+}
+
void GLSLCodeGenerator::writeVarDeclarations(const VarDeclarations& decl, bool global) {
ASSERT(decl.fVars.size() > 0);
bool wroteType = false;
@@ -640,7 +651,7 @@ void GLSLCodeGenerator::writeVarDeclarations(const VarDeclarations& decl, bool g
}
if (var.fValue) {
this->write(" = ");
- this->writeExpression(*var.fValue, kTopLevel_Precedence);
+ this->writeVarInitializer(*var.fVar, *var.fValue);
}
if (!fFoundImageDecl && var.fVar->fType == *fContext.fImage2D_Type) {
if (fProgram.fSettings.fCaps->imageLoadStoreExtensionString()) {
@@ -797,10 +808,7 @@ void GLSLCodeGenerator::writeReturnStatement(const ReturnStatement& r) {
this->write(";");
}
-bool GLSLCodeGenerator::generateCode() {
- OutputStream* rawOut = fOut;
- fOut = &fHeader;
- fProgramKind = fProgram.fKind;
+void GLSLCodeGenerator::writeHeader() {
this->write(fProgram.fSettings.fCaps->versionDeclString());
this->writeLine();
for (const auto& e : fProgram.fElements) {
@@ -808,8 +816,6 @@ bool GLSLCodeGenerator::generateCode() {
this->writeExtension((Extension&) *e);
}
}
- StringStream body;
- fOut = &body;
if (fProgram.fSettings.fCaps->usesPrecisionModifiers()) {
this->write("precision ");
switch (fProgram.fDefaultPrecision) {
@@ -828,47 +834,58 @@ bool GLSLCodeGenerator::generateCode() {
}
this->writeLine(" float;");
}
- for (const auto& e : fProgram.fElements) {
- switch (e->fKind) {
- case ProgramElement::kExtension_Kind:
- break;
- case ProgramElement::kVar_Kind: {
- VarDeclarations& decl = (VarDeclarations&) *e;
- if (decl.fVars.size() > 0) {
- ASSERT(decl.fVars[0]->fKind == Statement::kVarDeclaration_Kind);
- int builtin =
- ((VarDeclaration&) *decl.fVars[0]).fVar->fModifiers.fLayout.fBuiltin;
- if (builtin == -1) {
- // normal var
- this->writeVarDeclarations(decl, true);
- this->writeLine();
- } else if (builtin == SK_FRAGCOLOR_BUILTIN &&
- fProgram.fSettings.fCaps->mustDeclareFragmentShaderOutput()) {
- this->write("out ");
- if (fProgram.fSettings.fCaps->usesPrecisionModifiers()) {
- this->write("mediump ");
- }
- this->writeLine("vec4 sk_FragColor;");
+}
+
+void GLSLCodeGenerator::writeProgramElement(const ProgramElement& e) {
+ switch (e.fKind) {
+ case ProgramElement::kExtension_Kind:
+ break;
+ case ProgramElement::kVar_Kind: {
+ VarDeclarations& decl = (VarDeclarations&) e;
+ if (decl.fVars.size() > 0) {
+ int builtin = ((VarDeclaration&) *decl.fVars[0]).fVar->fModifiers.fLayout.fBuiltin;
+ if (builtin == -1) {
+ // normal var
+ this->writeVarDeclarations(decl, true);
+ this->writeLine();
+ } else if (builtin == SK_FRAGCOLOR_BUILTIN &&
+ fProgram.fSettings.fCaps->mustDeclareFragmentShaderOutput()) {
+ this->write("out ");
+ if (fProgram.fSettings.fCaps->usesPrecisionModifiers()) {
+ this->write("mediump ");
}
+ this->writeLine("vec4 sk_FragColor;");
}
- break;
}
- case ProgramElement::kInterfaceBlock_Kind:
- this->writeInterfaceBlock((InterfaceBlock&) *e);
- break;
- case ProgramElement::kFunction_Kind:
- this->writeFunction((FunctionDefinition&) *e);
- break;
- case ProgramElement::kModifiers_Kind:
- this->writeModifiers(((ModifiersDeclaration&) *e).fModifiers, true);
- this->writeLine(";");
- break;
- default:
- printf("%s\n", e->description().c_str());
- ABORT("unsupported program element");
+ break;
}
+ case ProgramElement::kInterfaceBlock_Kind:
+ this->writeInterfaceBlock((InterfaceBlock&) e);
+ break;
+ case ProgramElement::kFunction_Kind:
+ this->writeFunction((FunctionDefinition&) e);
+ break;
+ case ProgramElement::kModifiers_Kind:
+ this->writeModifiers(((ModifiersDeclaration&) e).fModifiers, true);
+ this->writeLine(";");
+ break;
+ default:
+ printf("%s\n", e.description().c_str());
+ ABORT("unsupported program element");
+ }
+}
+
+bool GLSLCodeGenerator::generateCode() {
+ OutputStream* rawOut = fOut;
+ fOut = &fHeader;
+ fProgramKind = fProgram.fKind;
+ this->writeHeader();
+ StringStream body;
+ fOut = &body;
+ for (const auto& e : fProgram.fElements) {
+ this->writeProgramElement(*e);
}
- fOut = nullptr;
+ fOut = rawOut;
write_stringstream(fHeader, *rawOut);
write_stringstream(body, *rawOut);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 22:27:36 +0000