Make generated effects from sksl fp files not need SK_SUPPORT_GPU

Bug: skia:
Change-Id: I42a5c7fe7dc35a23290c8daa754c9fcce07f76fb
Reviewed-on: https://skia-review.googlesource.com/119010
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>

1 files changed, 120 insertions, 0 deletions

diff --git a/src/gpu/effects/GrAlphaThresholdFragmentProcessor.cpp b/src/gpu/effects/GrAlphaThresholdFragmentProcessor.cpp
new file mode 100644
index 0000000000..176e812821
--- /dev/null
+++ b/src/gpu/effects/GrAlphaThresholdFragmentProcessor.cpp
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/**************************************************************************************************
+ *** This file was autogenerated from GrAlphaThresholdFragmentProcessor.fp; do not modify.
+ **************************************************************************************************/
+#include "GrAlphaThresholdFragmentProcessor.h"
+
+inline GrFragmentProcessor::OptimizationFlags GrAlphaThresholdFragmentProcessor::optFlags(
+        float outerThreshold) {
+    if (outerThreshold >= 1.0) {
+        return kPreservesOpaqueInput_OptimizationFlag |
+               kCompatibleWithCoverageAsAlpha_OptimizationFlag;
+    } else {
+        return kCompatibleWithCoverageAsAlpha_OptimizationFlag;
+    }
+}
+#include "glsl/GrGLSLFragmentProcessor.h"
+#include "glsl/GrGLSLFragmentShaderBuilder.h"
+#include "glsl/GrGLSLProgramBuilder.h"
+#include "GrTexture.h"
+#include "SkSLCPP.h"
+#include "SkSLUtil.h"
+class GrGLSLAlphaThresholdFragmentProcessor : public GrGLSLFragmentProcessor {
+public:
+    GrGLSLAlphaThresholdFragmentProcessor() {}
+    void emitCode(EmitArgs& args) override {
+        GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
+        const GrAlphaThresholdFragmentProcessor& _outer =
+                args.fFp.cast<GrAlphaThresholdFragmentProcessor>();
+        (void)_outer;
+        auto innerThreshold = _outer.innerThreshold();
+        (void)innerThreshold;
+        auto outerThreshold = _outer.outerThreshold();
+        (void)outerThreshold;
+        fInnerThresholdVar = args.fUniformHandler->addUniform(
+                kFragment_GrShaderFlag, kHalf_GrSLType, kDefault_GrSLPrecision, "innerThreshold");
+        fOuterThresholdVar = args.fUniformHandler->addUniform(
+                kFragment_GrShaderFlag, kHalf_GrSLType, kDefault_GrSLPrecision, "outerThreshold");
+        SkString sk_TransformedCoords2D_0 = fragBuilder->ensureCoords2D(args.fTransformedCoords[0]);
+        fragBuilder->codeAppendf(
+                "half4 color = %s;\nhalf4 mask_color = texture(%s, %s).%s;\nif "
+                "(float(mask_color.w) < 0.5) {\n    if (color.w > %s) {\n        half scale = %s / "
+                "color.w;\n        color.xyz *= scale;\n        color.w = %s;\n    }\n} else if "
+                "(color.w < %s) {\n    half scale = float(%s) / max(0.001, float(color.w));\n    "
+                "color.xyz *= scale;\n    color.w = %s;\n}\n%s = color;\n",
+                args.fInputColor ? args.fInputColor : "half4(1)",
+                fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]).c_str(),
+                sk_TransformedCoords2D_0.c_str(),
+                fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str(),
+                args.fUniformHandler->getUniformCStr(fOuterThresholdVar),
+                args.fUniformHandler->getUniformCStr(fOuterThresholdVar),
+                args.fUniformHandler->getUniformCStr(fOuterThresholdVar),
+                args.fUniformHandler->getUniformCStr(fInnerThresholdVar),
+                args.fUniformHandler->getUniformCStr(fInnerThresholdVar),
+                args.fUniformHandler->getUniformCStr(fInnerThresholdVar), args.fOutputColor);
+    }
+
+private:
+    void onSetData(const GrGLSLProgramDataManager& pdman,
+                   const GrFragmentProcessor& _proc) override {
+        const GrAlphaThresholdFragmentProcessor& _outer =
+                _proc.cast<GrAlphaThresholdFragmentProcessor>();
+        {
+            pdman.set1f(fInnerThresholdVar, _outer.innerThreshold());
+            pdman.set1f(fOuterThresholdVar, _outer.outerThreshold());
+        }
+    }
+    UniformHandle fInnerThresholdVar;
+    UniformHandle fOuterThresholdVar;
+};
+GrGLSLFragmentProcessor* GrAlphaThresholdFragmentProcessor::onCreateGLSLInstance() const {
+    return new GrGLSLAlphaThresholdFragmentProcessor();
+}
+void GrAlphaThresholdFragmentProcessor::onGetGLSLProcessorKey(const GrShaderCaps& caps,
+                                                              GrProcessorKeyBuilder* b) const {}
+bool GrAlphaThresholdFragmentProcessor::onIsEqual(const GrFragmentProcessor& other) const {
+    const GrAlphaThresholdFragmentProcessor& that = other.cast<GrAlphaThresholdFragmentProcessor>();
+    (void)that;
+    if (fMask != that.fMask) return false;
+    if (fInnerThreshold != that.fInnerThreshold) return false;
+    if (fOuterThreshold != that.fOuterThreshold) return false;
+    return true;
+}
+GrAlphaThresholdFragmentProcessor::GrAlphaThresholdFragmentProcessor(
+        const GrAlphaThresholdFragmentProcessor& src)
+        : INHERITED(kGrAlphaThresholdFragmentProcessor_ClassID, src.optimizationFlags())
+        , fMask(src.fMask)
+        , fInnerThreshold(src.fInnerThreshold)
+        , fOuterThreshold(src.fOuterThreshold)
+        , fMaskCoordTransform(src.fMaskCoordTransform) {
+    this->addTextureSampler(&fMask);
+    this->addCoordTransform(&fMaskCoordTransform);
+}
+std::unique_ptr<GrFragmentProcessor> GrAlphaThresholdFragmentProcessor::clone() const {
+    return std::unique_ptr<GrFragmentProcessor>(new GrAlphaThresholdFragmentProcessor(*this));
+}
+GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrAlphaThresholdFragmentProcessor);
+#if GR_TEST_UTILS
+std::unique_ptr<GrFragmentProcessor> GrAlphaThresholdFragmentProcessor::TestCreate(
+        GrProcessorTestData* testData) {
+    sk_sp<GrTextureProxy> maskProxy = testData->textureProxy(GrProcessorUnitTest::kAlphaTextureIdx);
+    // Make the inner and outer thresholds be in (0, 1) exclusive and be sorted correctly.
+    float innerThresh = testData->fRandom->nextUScalar1() * .99f + 0.005f;
+    float outerThresh = testData->fRandom->nextUScalar1() * .99f + 0.005f;
+    const int kMaxWidth = 1000;
+    const int kMaxHeight = 1000;
+    uint32_t width = testData->fRandom->nextULessThan(kMaxWidth);
+    uint32_t height = testData->fRandom->nextULessThan(kMaxHeight);
+    uint32_t x = testData->fRandom->nextULessThan(kMaxWidth - width);
+    uint32_t y = testData->fRandom->nextULessThan(kMaxHeight - height);
+    SkIRect bounds = SkIRect::MakeXYWH(x, y, width, height);
+    return GrAlphaThresholdFragmentProcessor::Make(std::move(maskProxy), innerThresh, outerThresh,
+                                                   bounds);
+}
+#endif