| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkTypes.h" |
| #include "Test.h" |
| |
| #if SK_SUPPORT_GPU |
| |
| #include "GrContext.h" |
| #include "GrContextPriv.h" |
| #include "GrClip.h" |
| #include "GrRenderTargetContext.h" |
| #include "GrRenderTargetContextPriv.h" |
| #include "GrShape.h" |
| #include "GrPathRenderer.h" |
| #include "GrPaint.h" |
| #include "SkMatrix.h" |
| #include "SkRect.h" |
| #include "ccpr/GrCoverageCountingPathRenderer.h" |
| #include <cmath> |
| |
| static constexpr int kCanvasSize = 100; |
| |
| class CCPRPathDrawer { |
| public: |
| CCPRPathDrawer(GrContext* ctx) |
| : fCtx(ctx) |
| , fCCPR(GrCoverageCountingPathRenderer::CreateIfSupported(*fCtx->caps())) |
| , fRTC(fCtx->makeDeferredRenderTargetContext(SkBackingFit::kExact, kCanvasSize, |
| kCanvasSize, kRGBA_8888_GrPixelConfig, |
| nullptr)) { |
| if (fCCPR) { |
| fCtx->contextPriv().addOnFlushCallbackObject(fCCPR.get()); |
| } |
| } |
| |
| ~CCPRPathDrawer() { |
| if (fCCPR) { |
| fCtx->contextPriv().testingOnly_flushAndRemoveOnFlushCallbackObject(fCCPR.get()); |
| } |
| } |
| |
| bool valid() { return fCCPR && fRTC; } |
| |
| void clear() { fRTC->clear(nullptr, 0, true); } |
| |
| void drawPath(const SkPath& path, GrColor4f color = GrColor4f(0, 1, 0, 1)) { |
| GrPaint paint; |
| paint.setColor4f(color); |
| GrNoClip noClip; |
| SkIRect clipBounds = SkIRect::MakeWH(kCanvasSize, kCanvasSize); |
| SkMatrix matrix = SkMatrix::I(); |
| GrShape shape(path); |
| fCCPR->drawPath({fCtx, std::move(paint), &GrUserStencilSettings::kUnused, fRTC.get(), |
| &noClip, &clipBounds, &matrix, &shape, GrAAType::kCoverage, false}); |
| } |
| |
| void flush() { |
| fCtx->flush(); |
| } |
| |
| private: |
| GrContext* const fCtx; |
| sk_sp<GrCoverageCountingPathRenderer> fCCPR; |
| sk_sp<GrRenderTargetContext> fRTC; |
| }; |
| |
| DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrCCPRTest, reporter, ctxInfo) { |
| GrContext* const ctx = ctxInfo.grContext(); |
| if (!GrCoverageCountingPathRenderer::IsSupported(*ctx->caps())) { |
| return; |
| } |
| |
| CCPRPathDrawer ccpr(ctx); |
| if (!ccpr.valid()) { |
| ERRORF(reporter, "could not create render target context for ccpr."); |
| return; |
| } |
| |
| // Test very busy paths. |
| static constexpr int kNumBusyVerbs = 1 << 17; |
| ccpr.clear(); |
| SkPath busyPath; |
| busyPath.moveTo(0, 0); // top left |
| busyPath.lineTo(kCanvasSize, kCanvasSize); // bottom right |
| for (int i = 2; i < kNumBusyVerbs; ++i) { |
| float offset = i * ((float)kCanvasSize / kNumBusyVerbs); |
| busyPath.lineTo(kCanvasSize - offset, kCanvasSize + offset); // offscreen |
| } |
| ccpr.drawPath(busyPath); |
| |
| ccpr.flush(); // If this doesn't crash, the test passed. |
| // If it does, maybe fiddle with fMaxInstancesPerDrawArraysWithoutCrashing in your |
| // platform's GrGLCaps. |
| } |
| |
| #endif |