Revert of Turned on SkSL->GLSL compiler (patchset #49 id:1240001 of https://codereview.chromium.org/2288033003/ )
Reason for revert:
Pre-emptive revert. Sorry, but we're getting back up on our roll and Chrome reverted our last one for apparently no reason.
Original issue's description:
> Turned on SkSL->GLSL compiler
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288033003
>
> Committed: https://skia.googlesource.com/skia/+/9b0fe3d125f237d9884732a48414fa85fc71b4e3
> Committed: https://skia.googlesource.com/skia/+/b12b3c6908c62c908b3680be01e3b5bfd30de310
> Committed: https://skia.googlesource.com/skia/+/f008b0a59f45c0d4bea3e66faf3b01805009ec89
> Committed: https://skia.googlesource.com/skia/+/08b2ccf398e2b81bc05d2c105837e5419899469b
> Committed: https://skia.googlesource.com/skia/+/dcfe6dba4a335e50e86ff68e3252065d4197432c
> Committed: https://skia.googlesource.com/skia/+/ccb1dd8f267f9d7fe7c9d0ce222ebc81b41853b3
TBR=benjaminwagner@google.com,bsalomon@google.com,egdaniel@google.com,ethannicholas@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review-Url: https://codereview.chromium.org/2408193002
diff --git a/src/sksl/SkSLGLSLCodeGenerator.cpp b/src/sksl/SkSLGLSLCodeGenerator.cpp
index 58cf7d3..da0bcb9 100644
--- a/src/sksl/SkSLGLSLCodeGenerator.cpp
+++ b/src/sksl/SkSLGLSLCodeGenerator.cpp
@@ -14,11 +14,8 @@
#include "ir/SkSLExpressionStatement.h"
#include "ir/SkSLExtension.h"
#include "ir/SkSLIndexExpression.h"
-#include "ir/SkSLModifiersDeclaration.h"
#include "ir/SkSLVariableReference.h"
-#define SK_FRAGCOLOR_BUILTIN 10001
-
namespace SkSL {
void GLSLCodeGenerator::write(const char* s) {
@@ -69,7 +66,7 @@
this->writeLine("struct " + type.name() + " {");
fIndentation++;
for (const auto& f : type.fields()) {
- this->writeModifiers(f.fModifiers, false);
+ this->writeModifiers(f.fModifiers);
// sizes (which must be static in structs) are part of the type name here
this->writeType(*f.fType);
this->writeLine(" " + f.fName + ";");
@@ -127,42 +124,7 @@
}
}
-static bool is_abs(Expression& expr) {
- if (expr.fKind != Expression::kFunctionCall_Kind) {
- return false;
- }
- return ((FunctionCall&) expr).fFunction.fName == "abs";
-}
-
-// turns min(abs(x), y) into ((tmpVar1 = abs(x)) < (tmpVar2 = y) ? tmpVar1 : tmpVar2) to avoid a
-// Tegra3 compiler bug.
-void GLSLCodeGenerator::writeMinAbsHack(Expression& absExpr, Expression& otherExpr) {
- ASSERT(!fCaps.fCanUseMinAndAbsTogether);
- std::string tmpVar1 = "minAbsHackVar" + to_string(fVarCount++);
- std::string tmpVar2 = "minAbsHackVar" + to_string(fVarCount++);
- this->fFunctionHeader += " " + absExpr.fType.name() + " " + tmpVar1 + ";\n";
- this->fFunctionHeader += " " + otherExpr.fType.name() + " " + tmpVar2 + ";\n";
- this->write("((" + tmpVar1 + " = ");
- this->writeExpression(absExpr, kTopLevel_Precedence);
- this->write(") < (" + tmpVar2 + " = ");
- this->writeExpression(otherExpr, kAssignment_Precedence);
- this->write(") ? " + tmpVar1 + " : " + tmpVar2 + ")");
-}
-
void GLSLCodeGenerator::writeFunctionCall(const FunctionCall& c) {
- if (!fCaps.fCanUseMinAndAbsTogether && c.fFunction.fName == "min") {
- ASSERT(c.fArguments.size() == 2);
- if (is_abs(*c.fArguments[0])) {
- this->writeMinAbsHack(*c.fArguments[0], *c.fArguments[1]);
- return;
- }
- if (is_abs(*c.fArguments[1])) {
- // note that this violates the GLSL left-to-right evaluation semantics. I doubt it will
- // ever end up mattering, but it's worth calling out.
- this->writeMinAbsHack(*c.fArguments[1], *c.fArguments[0]);
- return;
- }
- }
this->write(c.fFunction.fName + "(");
const char* separator = "";
for (const auto& arg : c.fArguments) {
@@ -185,15 +147,7 @@
}
void GLSLCodeGenerator::writeVariableReference(const VariableReference& ref) {
- if (ref.fVariable.fModifiers.fLayout.fBuiltin == SK_FRAGCOLOR_BUILTIN) {
- if (fCaps.fMustDeclareFragmentShaderOutput) {
- this->write("sk_FragColor");
- } else {
- this->write("gl_FragColor");
- }
- } else {
- this->write(ref.fVariable.fName);
- }
+ this->write(ref.fVariable.fName);
}
void GLSLCodeGenerator::writeIndexExpression(const IndexExpression& expr) {
@@ -316,11 +270,7 @@
}
void GLSLCodeGenerator::writeIntLiteral(const IntLiteral& i) {
- if (i.fType == *fContext.fUInt_Type) {
- this->write(to_string(i.fValue & 0xffffffff) + "u");
- } else {
- this->write(to_string((int32_t) i.fValue));
- }
+ this->write(to_string(i.fValue));
}
void GLSLCodeGenerator::writeFloatLiteral(const FloatLiteral& f) {
@@ -334,99 +284,28 @@
for (const auto& param : f.fDeclaration.fParameters) {
this->write(separator);
separator = ", ";
- this->writeModifiers(param->fModifiers, false);
- std::vector<int> sizes;
- const Type* type = ¶m->fType;
- while (type->kind() == Type::kArray_Kind) {
- sizes.push_back(type->columns());
- type = &type->componentType();
- }
- this->writeType(*type);
+ this->writeModifiers(param->fModifiers);
+ this->writeType(param->fType);
this->write(" " + param->fName);
- for (int s : sizes) {
- if (s <= 0) {
- this->write("[]");
- } else {
- this->write("[" + to_string(s) + "]");
- }
- }
}
- this->writeLine(") {");
-
- fFunctionHeader = "";
- std::ostream* oldOut = fOut;
- std::stringstream buffer;
- fOut = &buffer;
- fIndentation++;
- for (const auto& s : f.fBody->fStatements) {
- this->writeStatement(*s);
- this->writeLine();
- }
- fIndentation--;
- this->writeLine("}");
-
- fOut = oldOut;
- this->write(fFunctionHeader);
- this->write(buffer.str());
+ this->write(") ");
+ this->writeBlock(*f.fBody);
+ this->writeLine();
}
-void GLSLCodeGenerator::writeModifiers(const Modifiers& modifiers,
- bool globalContext) {
- if (modifiers.fFlags & Modifiers::kNoPerspective_Flag) {
- this->write("noperspective ");
- }
- if (modifiers.fFlags & Modifiers::kFlat_Flag) {
- this->write("flat ");
- }
- std::string layout = modifiers.fLayout.description();
- if (layout.length()) {
- this->write(layout + " ");
- }
- if ((modifiers.fFlags & Modifiers::kIn_Flag) &&
- (modifiers.fFlags & Modifiers::kOut_Flag)) {
- this->write("inout ");
- } else if (modifiers.fFlags & Modifiers::kIn_Flag) {
- if (globalContext && fCaps.fVersion < 130) {
- this->write(fProgramKind == Program::kVertex_Kind ? "attribute "
- : "varying ");
- } else {
- this->write("in ");
- }
- } else if (modifiers.fFlags & Modifiers::kOut_Flag) {
- if (globalContext && fCaps.fVersion < 130) {
- this->write("varying ");
- } else {
- this->write("out ");
- }
- }
- if (modifiers.fFlags & Modifiers::kUniform_Flag) {
- this->write("uniform ");
- }
- if (modifiers.fFlags & Modifiers::kConst_Flag) {
- this->write("const ");
- }
- if (fCaps.fUsesPrecisionModifiers) {
- if (modifiers.fFlags & Modifiers::kLowp_Flag) {
- this->write("lowp ");
- }
- if (modifiers.fFlags & Modifiers::kMediump_Flag) {
- this->write("mediump ");
- }
- if (modifiers.fFlags & Modifiers::kHighp_Flag) {
- this->write("highp ");
- }
- }
+void GLSLCodeGenerator::writeModifiers(const Modifiers& modifiers) {
+ this->write(modifiers.description());
}
void GLSLCodeGenerator::writeInterfaceBlock(const InterfaceBlock& intf) {
if (intf.fVariable.fName == "gl_PerVertex") {
return;
}
- this->writeModifiers(intf.fVariable.fModifiers, true);
+ this->writeModifiers(intf.fVariable.fModifiers);
this->writeLine(intf.fVariable.fType.name() + " {");
fIndentation++;
for (const auto& f : intf.fVariable.fType.fields()) {
- this->writeModifiers(f.fModifiers, false);
+ this->writeModifiers(f.fModifiers);
this->writeType(*f.fType);
this->writeLine(" " + f.fName + ";");
}
@@ -434,9 +313,9 @@
this->writeLine("};");
}
-void GLSLCodeGenerator::writeVarDeclarations(const VarDeclarations& decl, bool global) {
+void GLSLCodeGenerator::writeVarDeclarations(const VarDeclarations& decl) {
ASSERT(decl.fVars.size() > 0);
- this->writeModifiers(decl.fVars[0].fVar->fModifiers, global);
+ this->writeModifiers(decl.fVars[0].fVar->fModifiers);
this->writeType(decl.fBaseType);
std::string separator = " ";
for (const auto& var : decl.fVars) {
@@ -446,9 +325,7 @@
this->write(var.fVar->fName);
for (const auto& size : var.fSizes) {
this->write("[");
- if (size) {
- this->writeExpression(*size, kTopLevel_Precedence);
- }
+ this->writeExpression(*size, kTopLevel_Precedence);
this->write("]");
}
if (var.fValue) {
@@ -472,7 +349,7 @@
this->writeReturnStatement((ReturnStatement&) s);
break;
case Statement::kVarDeclarations_Kind:
- this->writeVarDeclarations(*((VarDeclarationsStatement&) s).fDeclaration, false);
+ this->writeVarDeclarations(*((VarDeclarationsStatement&) s).fDeclaration);
break;
case Statement::kIf_Kind:
this->writeIfStatement((IfStatement&) s);
@@ -567,57 +444,22 @@
void GLSLCodeGenerator::generateCode(const Program& program, std::ostream& out) {
ASSERT(fOut == nullptr);
fOut = &out;
- fProgramKind = program.fKind;
this->write("#version " + to_string(fCaps.fVersion));
- if (fCaps.fStandard == GLCaps::kGLES_Standard && fCaps.fVersion >= 300) {
+ if (fCaps.fStandard == GLCaps::kGLES_Standard) {
this->write(" es");
- } else if (fCaps.fIsCoreProfile) {
- this->write(" core");
}
this->writeLine();
for (const auto& e : program.fElements) {
- if (e->fKind == ProgramElement::kExtension_Kind) {
- this->writeExtension((Extension&) *e);
- }
- }
- if (fCaps.fStandard == GLCaps::kGLES_Standard) {
- this->write("precision ");
- switch (program.fDefaultPrecision) {
- case Modifiers::kLowp_Flag:
- this->write("lowp");
- break;
- case Modifiers::kMediump_Flag:
- this->write("mediump");
- break;
- case Modifiers::kHighp_Flag:
- this->write("highp");
- break;
- default:
- ASSERT(false);
- this->write("<error>");
- }
- this->writeLine(" float;");
- }
- for (const auto& e : program.fElements) {
switch (e->fKind) {
case ProgramElement::kExtension_Kind:
+ this->writeExtension((Extension&) *e);
break;
case ProgramElement::kVar_Kind: {
VarDeclarations& decl = (VarDeclarations&) *e;
- if (decl.fVars.size() > 0) {
- int builtin = decl.fVars[0].fVar->fModifiers.fLayout.fBuiltin;
- if (builtin == -1) {
- // normal var
- this->writeVarDeclarations(decl, true);
- this->writeLine();
- } else if (builtin == SK_FRAGCOLOR_BUILTIN &&
- fCaps.fMustDeclareFragmentShaderOutput) {
- this->write("out ");
- if (fCaps.fUsesPrecisionModifiers) {
- this->write("mediump ");
- }
- this->writeLine("vec4 sk_FragColor;");
- }
+ if (decl.fVars.size() > 0 &&
+ decl.fVars[0].fVar->fModifiers.fLayout.fBuiltin == -1) {
+ this->writeVarDeclarations(decl);
+ this->writeLine();
}
break;
}
@@ -627,10 +469,6 @@
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");