8053c972b4
As the first real op to be updated this required the plumbing of the DstProxyView and the de-constification of the GrAppliedClip. Bug: skia:9455 Change-Id: Ieaa16adfa1d114021b2ad60d0ef8ecbe31d9cc82 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/255136 Reviewed-by: Michael Ludwig <michaelludwig@google.com> Commit-Queue: Robert Phillips <robertphillips@google.com>
278 lines
11 KiB
C++
278 lines
11 KiB
C++
/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkBlendMode.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkString.h"
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#include "include/gpu/GrContext.h"
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#include "include/private/GrRecordingContext.h"
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#include "include/private/GrTypesPriv.h"
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#include "src/gpu/GrBuffer.h"
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#include "src/gpu/GrCaps.h"
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#include "src/gpu/GrContextPriv.h"
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#include "src/gpu/GrGeometryProcessor.h"
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#include "src/gpu/GrGpuBuffer.h"
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#include "src/gpu/GrMemoryPool.h"
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#include "src/gpu/GrMesh.h"
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#include "src/gpu/GrOpFlushState.h"
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#include "src/gpu/GrOpsRenderPass.h"
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#include "src/gpu/GrPipeline.h"
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#include "src/gpu/GrPrimitiveProcessor.h"
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#include "src/gpu/GrProcessor.h"
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#include "src/gpu/GrProcessorSet.h"
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#include "src/gpu/GrProgramInfo.h"
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#include "src/gpu/GrRecordingContextPriv.h"
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#include "src/gpu/GrRenderTargetContext.h"
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#include "src/gpu/GrRenderTargetContextPriv.h"
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#include "src/gpu/GrResourceProvider.h"
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#include "src/gpu/GrShaderCaps.h"
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#include "src/gpu/GrShaderVar.h"
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#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
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#include "src/gpu/glsl/GrGLSLGeometryProcessor.h"
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#include "src/gpu/glsl/GrGLSLPrimitiveProcessor.h"
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#include "src/gpu/glsl/GrGLSLProgramDataManager.h"
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#include "src/gpu/glsl/GrGLSLUniformHandler.h"
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#include "src/gpu/glsl/GrGLSLVarying.h"
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#include "src/gpu/glsl/GrGLSLVertexGeoBuilder.h"
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#include "src/gpu/ops/GrDrawOp.h"
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#include "src/gpu/ops/GrOp.h"
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#include <memory>
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#include <utility>
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class GrAppliedClip;
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/**
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* This test ensures that fwidth() works properly on GPU configs by drawing a squircle.
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*/
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namespace skiagm {
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static constexpr GrGeometryProcessor::Attribute gVertex =
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{"bboxcoord", kFloat2_GrVertexAttribType, kFloat2_GrSLType};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// SkSL code.
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class FwidthSquircleTestProcessor : public GrGeometryProcessor {
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public:
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static GrGeometryProcessor* Make(SkArenaAlloc* arena, const SkMatrix& viewMatrix) {
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return arena->make<FwidthSquircleTestProcessor>(viewMatrix);
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}
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const char* name() const override { return "FwidthSquircleTestProcessor"; }
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void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const final {}
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GrGLSLPrimitiveProcessor* createGLSLInstance(const GrShaderCaps&) const final;
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private:
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friend class ::SkArenaAlloc; // for access to ctor
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FwidthSquircleTestProcessor(const SkMatrix& viewMatrix)
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: GrGeometryProcessor(kFwidthSquircleTestProcessor_ClassID)
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, fViewMatrix(viewMatrix) {
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this->setVertexAttributes(&gVertex, 1);
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}
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const SkMatrix fViewMatrix;
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class Impl;
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typedef GrGeometryProcessor INHERITED;
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};
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class FwidthSquircleTestProcessor::Impl : public GrGLSLGeometryProcessor {
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void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
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const auto& proc = args.fGP.cast<FwidthSquircleTestProcessor>();
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auto* uniforms = args.fUniformHandler;
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fViewMatrixHandle =
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uniforms->addUniform(kVertex_GrShaderFlag, kFloat3x3_GrSLType, "viewmatrix");
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auto* varyings = args.fVaryingHandler;
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varyings->emitAttributes(proc);
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GrGLSLVarying squircleCoord(kFloat2_GrSLType);
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varyings->addVarying("bboxcoord", &squircleCoord);
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auto* v = args.fVertBuilder;
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v->codeAppendf("float2x2 R = float2x2(cos(.05), sin(.05), -sin(.05), cos(.05));");
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v->codeAppendf("%s = bboxcoord * 1.25;", squircleCoord.vsOut());
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v->codeAppendf("float3 vertexpos = float3(bboxcoord * 100 * R + 100, 1);");
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v->codeAppendf("vertexpos = %s * vertexpos;", uniforms->getUniformCStr(fViewMatrixHandle));
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gpArgs->fPositionVar.set(kFloat3_GrSLType, "vertexpos");
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auto* f = args.fFragBuilder;
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f->codeAppendf("float golden_ratio = 1.61803398875;");
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f->codeAppendf("float pi = 3.141592653589793;");
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f->codeAppendf("float x = abs(%s.x), y = abs(%s.y);",
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squircleCoord.fsIn(), squircleCoord.fsIn());
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// Squircle function!
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f->codeAppendf("float fn = half(pow(x, golden_ratio*pi) + pow(y, golden_ratio*pi) - 1);");
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f->codeAppendf("float fnwidth = fwidth(fn);");
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f->codeAppendf("fnwidth += 1e-10;"); // Guard against divide-by-zero.
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f->codeAppendf("half coverage = clamp(half(.5 - fn/fnwidth), 0, 1);");
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f->codeAppendf("%s = half4(.51, .42, .71, 1) * .89;", args.fOutputColor);
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f->codeAppendf("%s = half4(coverage);", args.fOutputCoverage);
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}
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void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& primProc,
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FPCoordTransformIter&& transformIter) override {
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const auto& proc = primProc.cast<FwidthSquircleTestProcessor>();
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pdman.setSkMatrix(fViewMatrixHandle, proc.fViewMatrix);
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}
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UniformHandle fViewMatrixHandle;
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};
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GrGLSLPrimitiveProcessor* FwidthSquircleTestProcessor::createGLSLInstance(
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const GrShaderCaps&) const {
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return new Impl();
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Draw Op.
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class FwidthSquircleTestOp : public GrDrawOp {
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public:
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DEFINE_OP_CLASS_ID
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static std::unique_ptr<GrDrawOp> Make(GrRecordingContext* ctx, const SkMatrix& viewMatrix) {
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GrOpMemoryPool* pool = ctx->priv().opMemoryPool();
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return pool->allocate<FwidthSquircleTestOp>(viewMatrix);
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}
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private:
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FwidthSquircleTestOp(const SkMatrix& viewMatrix)
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: GrDrawOp(ClassID())
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, fViewMatrix(viewMatrix) {
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this->setBounds(SkRect::MakeIWH(kWidth, kHeight), HasAABloat::kNo, IsHairline::kNo);
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}
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const char* name() const override { return "FwidthSquircleTestOp"; }
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FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
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GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*,
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bool hasMixedSampledCoverage, GrClampType) override {
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return GrProcessorSet::EmptySetAnalysis();
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}
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void onPrePrepare(GrRecordingContext* context,
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const GrSurfaceProxyView* dstView,
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GrAppliedClip* appliedClip,
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const GrXferProcessor::DstProxyView& dstProxyView) final {
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// We're going to create the GrProgramInfo (and the GrPipeline and geometry processor
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// it relies on) in the DDL-record-time arena.
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SkArenaAlloc* arena = context->priv().recordTimeAllocator();
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// Not POD! It has some sk_sp's buried inside it!
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GrPipeline* pipeline = arena->make<GrPipeline>(GrScissorTest::kDisabled,
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SkBlendMode::kSrcOver,
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dstView->swizzle());
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GrPrimitiveProcessor* geomProc = FwidthSquircleTestProcessor::Make(arena, fViewMatrix);
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// The programInfo is POD
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GrRenderTargetProxy* dstProxy = dstView->asRenderTargetProxy();
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fProgramInfo = arena->make<GrProgramInfo>(dstProxy->numSamples(),
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dstProxy->numStencilSamples(),
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dstView->origin(),
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pipeline,
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geomProc,
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nullptr, nullptr, 0,
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GrPrimitiveType::kTriangleStrip);
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}
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void onPrepare(GrOpFlushState* flushState) final {
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SkPoint vertices[4] = {
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{-1, -1},
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{+1, -1},
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{-1, +1},
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{+1, +1},
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};
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fVertexBuffer = flushState->resourceProvider()->createBuffer(
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sizeof(vertices), GrGpuBufferType::kVertex, kStatic_GrAccessPattern, vertices);
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}
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void onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) final {
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if (!fVertexBuffer) {
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return;
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}
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GrMesh mesh(GrPrimitiveType::kTriangleStrip);
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mesh.setNonIndexedNonInstanced(4);
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mesh.setVertexData(std::move(fVertexBuffer));
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if (fProgramInfo) {
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flushState->opsRenderPass()->draw(*fProgramInfo, &mesh, 1,
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SkRect::MakeIWH(kWidth, kHeight));
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} else {
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const GrSurfaceProxyView* dstView = flushState->view();
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GrPipeline pipeline(GrScissorTest::kDisabled,
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SkBlendMode::kSrcOver,
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dstView->swizzle());
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GrGeometryProcessor* gp = FwidthSquircleTestProcessor::Make(flushState->allocator(),
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fViewMatrix);
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GrProgramInfo programInfo(dstView->asRenderTargetProxy()->numSamples(),
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dstView->asRenderTargetProxy()->numStencilSamples(),
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dstView->origin(),
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&pipeline,
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gp,
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nullptr, nullptr, 0,
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GrPrimitiveType::kTriangleStrip);
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flushState->opsRenderPass()->draw(programInfo, &mesh, 1,
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SkRect::MakeIWH(kWidth, kHeight));
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}
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}
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static const int kWidth = 200;
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static const int kHeight = 200;
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sk_sp<GrBuffer> fVertexBuffer;
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const SkMatrix fViewMatrix;
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// The program info (and both the GrPipeline and GrPrimitiveProcessor it relies on), when
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// allocated, are allocated in the ddl-record-time arena. It is the arena's job to free up
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// their memory so we just have a bare programInfo pointer here. We don't even store the
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// GrPipeline and GrPrimitiveProcessor pointers here bc they are guaranteed to have the
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// same lifetime as the program info.
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GrProgramInfo* fProgramInfo = nullptr;
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friend class ::GrOpMemoryPool; // for ctor
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typedef GrDrawOp INHERITED;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Test.
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DEF_SIMPLE_GPU_GM_CAN_FAIL(fwidth_squircle, ctx, rtc, canvas, errorMsg, 200, 200) {
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if (!ctx->priv().caps()->shaderCaps()->shaderDerivativeSupport()) {
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*errorMsg = "Shader derivatives not supported.";
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return DrawResult::kSkip;
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}
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// Draw the test directly to the frame buffer.
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canvas->clear(SK_ColorWHITE);
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rtc->priv().testingOnly_addDrawOp(FwidthSquircleTestOp::Make(ctx, canvas->getTotalMatrix()));
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return skiagm::DrawResult::kOk;
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}
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}
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