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skia2/tests/SkSLTest.cpp
John Stiles b3dcbb12ef Detect functions that fail to return a value, without using CFG. 
This check now runs at function finalization time, before constant
propagation has occurred; this affected the "DeadIfStatement" test.

Our detection isn't smart enough to realize that a loop will run zero
times, so it treats `for` and `while` loops as always running at least
once. This isn't strictly correct, but it actually mirrors how the CFG
implementation works anyway. The only downside is that we would not flag
code like `for (i=0; i<0; ++i) { return x; }` as an error.

Change-Id: I5e43a6ee3a3993045559f0fb0646d36112543a94
Bug: skia:11377
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/379056
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-03-04 22:47:05 +00:00

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/*
* Copyright 2021 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkData.h"
#include "include/core/SkFont.h"
#include "include/core/SkPaint.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkSurface.h"
#include "include/effects/SkGradientShader.h"
#include "include/effects/SkImageFilters.h"
#include "include/effects/SkRuntimeEffect.h"
#include "include/private/SkSLDefines.h" // for kDefaultInlineThreshold
#include "include/utils/SkRandom.h"
#include "tests/Test.h"
#include "tools/Resources.h"
#include "tools/ToolUtils.h"
static const SkRect kRect = SkRect::MakeWH(1, 1);
template <typename T>
static void set_uniform(SkRuntimeShaderBuilder* builder, const char* name, const T& value) {
SkRuntimeShaderBuilder::BuilderUniform uniform = builder->uniform(name);
if (uniform.fVar) {
uniform = value;
}
}
static void test_one_permutation(skiatest::Reporter* r,
SkSurface* surface,
const char* testFile,
const char* permutationSuffix,
const SkRuntimeEffect::Options& options) {
SkString resourcePath = SkStringPrintf("sksl/%s", testFile);
sk_sp<SkData> shaderData = GetResourceAsData(resourcePath.c_str());
if (!shaderData) {
ERRORF(r, "%s%s: Unable to load file", testFile, permutationSuffix);
return;
}
SkString shaderString{reinterpret_cast<const char*>(shaderData->bytes()), shaderData->size()};
SkRuntimeEffect::Result result = SkRuntimeEffect::Make(shaderString, options);
if (!result.effect) {
ERRORF(r, "%s%s: %s", testFile, permutationSuffix, result.errorText.c_str());
return;
}
SkRuntimeShaderBuilder builder(result.effect);
set_uniform(&builder, "colorBlack", SkV4{0, 0, 0, 1});
set_uniform(&builder, "colorRed", SkV4{1, 0, 0, 1});
set_uniform(&builder, "colorGreen", SkV4{0, 1, 0, 1});
set_uniform(&builder, "colorBlue", SkV4{0, 0, 1, 1});
set_uniform(&builder, "colorWhite", SkV4{1, 1, 1, 1});
set_uniform(&builder, "testInputs", SkV4{-1.25, 0, 0.75, 2.25});
set_uniform(&builder, "testMatrix2x2", std::array<float,4>{1, 2,
3, 4});
set_uniform(&builder, "testMatrix3x3", std::array<float,9>{1, 2, 3,
4, 5, 6,
7, 8, 9});
set_uniform(&builder, "unknownInput", 1.0f);
set_uniform(&builder, "testMatrix2x2", std::array<float,4>{1, 2,
3, 4});
set_uniform(&builder, "testMatrix3x3", std::array<float,9>{1, 2, 3,
4, 5, 6,
7, 8, 9});
sk_sp<SkShader> shader = builder.makeShader(/*localMatrix=*/nullptr, /*isOpaque=*/true);
if (!shader) {
ERRORF(r, "%s%s: Unable to build shader", testFile, permutationSuffix);
return;
}
SkPaint paintShader;
paintShader.setShader(shader);
surface->getCanvas()->drawRect(kRect, paintShader);
SkBitmap bitmap;
REPORTER_ASSERT(r, bitmap.tryAllocPixels(surface->imageInfo()));
REPORTER_ASSERT(r, surface->readPixels(bitmap.info(), bitmap.getPixels(), bitmap.rowBytes(),
/*srcX=*/0, /*srcY=*/0));
SkColor color = bitmap.getColor(0, 0);
REPORTER_ASSERT(r, color == SkColorSetARGB(0xFF, 0x00, 0xFF, 0x00),
"Expected: solid green. Actual: A=%02X R=%02X G=%02X B=%02X.",
SkColorGetA(color), SkColorGetR(color), SkColorGetG(color), SkColorGetB(color));
}
static void test_permutations(skiatest::Reporter* r, SkSurface* surface, const char* testFile) {
SkRuntimeEffect::Options options;
options.inlineThreshold = 0;
test_one_permutation(r, surface, testFile, " (NoInline)", options);
options.inlineThreshold = SkSL::kDefaultInlineThreshold;
test_one_permutation(r, surface, testFile, "", options);
}
static void test_cpu(skiatest::Reporter* r, const char* testFile) {
const SkImageInfo info = SkImageInfo::MakeN32Premul(kRect.width(), kRect.height());
sk_sp<SkSurface> surface(SkSurface::MakeRaster(info));
test_permutations(r, surface.get(), testFile);
}
static void test_gpu(skiatest::Reporter* r, GrDirectContext* ctx, const char* testFile) {
const SkImageInfo info = SkImageInfo::MakeN32Premul(kRect.width(), kRect.height());
sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(ctx, SkBudgeted::kNo, info));
test_permutations(r, surface.get(), testFile);
}
#define SKSL_TEST_CPU(name, path) \
DEF_TEST(name ## _CPU, r) { \
test_cpu(r, path); \
}
#define SKSL_TEST_GPU(name, path) \
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(name ## _GPU, r, ctxInfo) { \
test_gpu(r, ctxInfo.directContext(), path); \
}
#define SKSL_TEST(name, path) SKSL_TEST_CPU(name, path) SKSL_TEST_GPU(name, path)
SKSL_TEST(SkSLAssignmentOps, "folding/AssignmentOps.sksl")
SKSL_TEST(SkSLBoolFolding, "folding/BoolFolding.sksl")
SKSL_TEST(SkSLIntFoldingES2, "folding/IntFoldingES2.sksl")
SKSL_TEST(SkSLFloatFolding, "folding/FloatFolding.sksl")
SKSL_TEST(SkSLMatrixFoldingES2, "folding/MatrixFoldingES2.sksl")
SKSL_TEST(SkSLSelfAssignment, "folding/SelfAssignment.sksl")
SKSL_TEST(SkSLShortCircuitBoolFolding, "folding/ShortCircuitBoolFolding.sksl")
SKSL_TEST(SkSLVectorScalarFolding, "folding/VectorScalarFolding.sksl")
SKSL_TEST(SkSLVectorVectorFolding, "folding/VectorVectorFolding.sksl")
SKSL_TEST(SkSLIntrinsicAbsFloat, "intrinsics/AbsFloat.sksl")
SKSL_TEST(SkSLIntrinsicCeil, "intrinsics/Ceil.sksl")
SKSL_TEST(SkSLIntrinsicClampFloat, "intrinsics/ClampFloat.sksl")
SKSL_TEST(SkSLIntrinsicMaxFloat, "intrinsics/MaxFloat.sksl")
SKSL_TEST(SkSLIntrinsicMinFloat, "intrinsics/MinFloat.sksl")
SKSL_TEST(SkSLIntrinsicMixFloat, "intrinsics/MixFloat.sksl")
SKSL_TEST(SkSLIntrinsicSignFloat, "intrinsics/SignFloat.sksl")
SKSL_TEST(SkSLArrayTypes, "shared/ArrayTypes.sksl")
SKSL_TEST(SkSLAssignment, "shared/Assignment.sksl")
SKSL_TEST(SkSLCastsRoundTowardZero, "shared/CastsRoundTowardZero.sksl")
SKSL_TEST(SkSLCommaMixedTypes, "shared/CommaMixedTypes.sksl")
SKSL_TEST(SkSLCommaSideEffects, "shared/CommaSideEffects.sksl")
SKSL_TEST(SkSLConstantIf, "shared/ConstantIf.sksl")
SKSL_TEST(SkSLConstVariableComparison, "shared/ConstVariableComparison.sksl")
SKSL_TEST(SkSLDeadIfStatement, "shared/DeadIfStatement.sksl")
SKSL_TEST(SkSLDeadStripFunctions, "shared/DeadStripFunctions.sksl")
SKSL_TEST(SkSLDependentInitializers, "shared/DependentInitializers.sksl")
SKSL_TEST(SkSLEmptyBlocksES2, "shared/EmptyBlocksES2.sksl")
SKSL_TEST(SkSLForLoopControlFlow, "shared/ForLoopControlFlow.sksl")
SKSL_TEST(SkSLFunctionArgTypeMatch, "shared/FunctionArgTypeMatch.sksl")
SKSL_TEST(SkSLFunctionReturnTypeMatch, "shared/FunctionReturnTypeMatch.sksl")
SKSL_TEST(SkSLFunctions, "shared/Functions.sksl")
SKSL_TEST(SkSLGeometricIntrinsics, "shared/GeometricIntrinsics.sksl")
SKSL_TEST(SkSLHelloWorld, "shared/HelloWorld.sksl")
SKSL_TEST(SkSLHex, "shared/Hex.sksl")
SKSL_TEST(SkSLMatrices, "shared/Matrices.sksl")
SKSL_TEST(SkSLMatrixEquality, "shared/MatrixEquality.sksl")
SKSL_TEST(SkSLMultipleAssignments, "shared/MultipleAssignments.sksl")
SKSL_TEST(SkSLNegatedVectorLiteral, "shared/NegatedVectorLiteral.sksl")
SKSL_TEST(SkSLNumberCasts, "shared/NumberCasts.sksl")
SKSL_TEST(SkSLOperatorsES2, "shared/OperatorsES2.sksl")
SKSL_TEST(SkSLOutParams, "shared/OutParams.sksl")
SKSL_TEST(SkSLOutParamsTricky, "shared/OutParamsTricky.sksl")
SKSL_TEST(SkSLResizeMatrix, "shared/ResizeMatrix.sksl")
SKSL_TEST(SkSLReturnsValueOnEveryPathES2, "shared/ReturnsValueOnEveryPathES2.sksl")
SKSL_TEST(SkSLScalarConversionConstructorsES2, "shared/ScalarConversionConstructorsES2.sksl")
SKSL_TEST(SkSLStackingVectorCasts, "shared/StackingVectorCasts.sksl")
SKSL_TEST(SkSLStaticIf, "shared/StaticIf.sksl")
SKSL_TEST(SkSLStructsInFunctions, "shared/StructsInFunctions.sksl")
SKSL_TEST(SkSLSwizzleBoolConstants, "shared/SwizzleBoolConstants.sksl")
SKSL_TEST(SkSLSwizzleByConstantIndex, "shared/SwizzleByConstantIndex.sksl")
SKSL_TEST(SkSLSwizzleConstants, "shared/SwizzleConstants.sksl")
SKSL_TEST(SkSLSwizzleLTRB, "shared/SwizzleLTRB.sksl")
SKSL_TEST(SkSLSwizzleOpt, "shared/SwizzleOpt.sksl")
SKSL_TEST(SkSLSwizzleScalar, "shared/SwizzleScalar.sksl")
SKSL_TEST(SkSLTernaryAsLValueEntirelyFoldable, "shared/TernaryAsLValueEntirelyFoldable.sksl")
SKSL_TEST(SkSLTernaryAsLValueFoldableTest, "shared/TernaryAsLValueFoldableTest.sksl")
SKSL_TEST(SkSLUnaryPositiveNegative, "shared/UnaryPositiveNegative.sksl")
SKSL_TEST(SkSLUnusedVariables, "shared/UnusedVariables.sksl")
SKSL_TEST(SkSLVectorConstructors, "shared/VectorConstructors.sksl")
/*
// Incompatible with Runtime Effects because calling a function before its definition is disallowed.
// (This was done to prevent recursion, as required by ES2.)
SKSL_TEST(SkSLFunctionPrototype, "shared/FunctionPrototype.sksl")
*/
/*
TODO(skia:11209): enable these tests when Runtime Effects have support for ES3
SKSL_TEST(SkSLIntFoldingES3, "folding/IntFoldingES3.sksl")
SKSL_TEST(SkSLMatrixFoldingES3, "folding/MatrixFoldingES3.sksl")
SKSL_TEST(SkSLIntrinsicAbsInt, "intrinsics/AbsInt.sksl")
SKSL_TEST(SkSLIntrinsicClampInt, "intrinsics/ClampInt.sksl")
SKSL_TEST(SkSLIntrinsicMaxInt, "intrinsics/MaxInt.sksl")
SKSL_TEST(SkSLIntrinsicMinInt, "intrinsics/MinInt.sksl")
SKSL_TEST(SkSLIntrinsicMixBool, "intrinsics/MixBool.sksl")
SKSL_TEST(SkSLIntrinsicSignInt, "intrinsics/SignInt.sksl")
SKSL_TEST(SkSLArrayConstructors, "shared/ArrayConstructors.sksl")
SKSL_TEST(SkSLDeadLoopVariable, "shared/DeadLoopVariable.sksl")
SKSL_TEST(SkSLDoWhileControlFlow, "shared/DoWhileControlFlow.sksl")
SKSL_TEST(SkSLEmptyBlocksES3, "shared/EmptyBlocksES3.sksl")
SKSL_TEST(SkSLHexUnsigned, "shared/HexUnsigned.sksl")
SKSL_TEST(SkSLMatricesNonsquare, "shared/MatricesNonsquare.sksl")
SKSL_TEST(SkSLOperatorsES3, "shared/OperatorsES3.sksl")
SKSL_TEST(SkSLResizeMatrixNonsquare, "shared/ResizeMatrixNonsquare.sksl")
SKSL_TEST(SkSLReturnsValueOnEveryPathES3, "shared/ReturnsValueOnEveryPathES3.sksl")
SKSL_TEST(SkSLScalarConversionConstructorsES3, "shared/ScalarConversionConstructorsES3.sksl")
SKSL_TEST(SkSLSwizzleByIndex, "shared/SwizzleByIndex.sksl")
SKSL_TEST(SkSLWhileLoopControlFlow, "shared/WhileLoopControlFlow.sksl")
*/
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