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Diffstat (limited to 'src/gpu/ccpr/GrCCPRCubicShader.h')
-rw-r--r--src/gpu/ccpr/GrCCPRCubicShader.h94
1 files changed, 0 insertions, 94 deletions
diff --git a/src/gpu/ccpr/GrCCPRCubicShader.h b/src/gpu/ccpr/GrCCPRCubicShader.h
deleted file mode 100644
index f9655be9c3..0000000000
--- a/src/gpu/ccpr/GrCCPRCubicShader.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright 2017 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef GrCCPRCubicShader_DEFINED
-#define GrCCPRCubicShader_DEFINED
-
-#include "ccpr/GrCCPRCoverageProcessor.h"
-
-/**
- * This class renders the coverage of convex closed cubic segments using the techniques outlined in
- * "Resolution Independent Curve Rendering using Programmable Graphics Hardware" by Charles Loop and
- * Jim Blinn:
- *
- * https://www.microsoft.com/en-us/research/wp-content/uploads/2005/01/p1000-loop.pdf
- *
- * The provided curve segments must be convex, monotonic with respect to the vector of their closing
- * edge [P3 - P0], and must not contain or be near any inflection points or loop intersections.
- * (Use GrCCPRGeometry.)
- */
-class GrCCPRCubicShader : public GrCCPRCoverageProcessor::Shader {
-public:
- enum class CubicType {
- kSerpentine,
- kLoop
- };
-
-protected:
- GrCCPRCubicShader(CubicType cubicType) : fCubicType(cubicType) {}
-
- int getNumInputPoints() const final { return 4; }
-
- void appendInputPointFetch(const GrCCPRCoverageProcessor&, GrGLSLShaderBuilder*,
- const TexelBufferHandle& pointsBuffer,
- const char* pointId) const final;
-
- void emitWind(GrGLSLShaderBuilder*, const char* pts, const char* rtAdjust,
- const char* outputWind) const final;
-
- void emitSetupCode(GrGLSLShaderBuilder*, const char* pts, const char* segmentId,
- const char* bloat, const char* wind, const char* rtAdjust,
- GeometryVars*) const final;
-
- virtual void onEmitSetupCode(GrGLSLShaderBuilder*, const char* pts, const char* segmentId,
- const char* rtAdjust, GeometryVars*) const = 0;
-
- WindHandling onEmitVaryings(GrGLSLVaryingHandler*, SkString* code, const char* position,
- const char* coverage, const char* wind) final;
-
- virtual void onEmitVaryings(GrGLSLVaryingHandler*, SkString* code) = 0;
-
- const CubicType fCubicType;
- GrShaderVar fKLMMatrix{"klm_matrix", kFloat3x3_GrSLType};
- GrShaderVar fKLMDerivatives{"klm_derivatives", kFloat2_GrSLType, 3};
- GrShaderVar fEdgeDistanceEquation{"edge_distance_equation", kFloat3_GrSLType};
- GrGLSLGeoToFrag fKLMD{kFloat4_GrSLType};
-};
-
-class GrCCPRCubicHullShader : public GrCCPRCubicShader {
-public:
- GrCCPRCubicHullShader(CubicType cubicType) : GrCCPRCubicShader(cubicType) {}
-
-private:
- GeometryType getGeometryType() const override { return GeometryType::kHull; }
- int getNumSegments() const override { return 4; } // 4 wedges.
- void onEmitSetupCode(GrGLSLShaderBuilder*, const char* pts, const char* wedgeId,
- const char* rtAdjust, GeometryVars*) const override;
- void onEmitVaryings(GrGLSLVaryingHandler*, SkString* code) override;
- void onEmitFragmentCode(GrGLSLPPFragmentBuilder*, const char* outputCoverage) const override;
-
- GrGLSLGeoToFrag fGradMatrix{kFloat2x2_GrSLType};
-};
-
-class GrCCPRCubicCornerShader : public GrCCPRCubicShader {
-public:
- GrCCPRCubicCornerShader(CubicType cubicType) : GrCCPRCubicShader(cubicType) {}
-
-private:
- GeometryType getGeometryType() const override { return GeometryType::kCorners; }
- int getNumSegments() const override { return 2; } // 2 corners.
- void onEmitSetupCode(GrGLSLShaderBuilder*, const char* pts, const char* cornerId,
- const char* rtAdjust, GeometryVars*) const override;
- void onEmitVaryings(GrGLSLVaryingHandler*, SkString* code) override;
- void onEmitFragmentCode(GrGLSLPPFragmentBuilder*, const char* outputCoverage) const override;
-
- GrShaderVar fEdgeDistanceDerivatives{"edge_distance_derivatives", kFloat2_GrSLType};
- GrGLSLGeoToFrag fdKLMDdx{kFloat4_GrSLType};
- GrGLSLGeoToFrag fdKLMDdy{kFloat4_GrSLType};
-};
-
-#endif