2016-07-06 16:59:43 +00:00
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/*
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* Copyright 2016 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 "SkTypes.h"
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#include "SkPoint.h"
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#include "Test.h"
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#include <vector>
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#if SK_SUPPORT_GPU
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2017-01-17 17:39:53 +00:00
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#include "GrAppliedClip.h"
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2016-11-01 15:55:55 +00:00
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#include "GrRenderTargetContext.h"
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#include "GrRenderTargetPriv.h"
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2016-12-09 20:10:07 +00:00
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#include "GrTypesPriv.h"
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2016-07-06 16:59:43 +00:00
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#include "gl/GrGLGpu.h"
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#include "gl/debug/DebugGLTestContext.h"
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typedef std::vector<SkPoint> SamplePattern;
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static const SamplePattern kTestPatterns[] = {
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SamplePattern{ // Intel on mac, msaa8, offscreen.
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{0.562500, 0.312500},
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{0.437500, 0.687500},
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{0.812500, 0.562500},
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{0.312500, 0.187500},
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{0.187500, 0.812500},
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{0.062500, 0.437500},
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{0.687500, 0.937500},
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{0.937500, 0.062500}
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},
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SamplePattern{ // Intel on mac, msaa8, on-screen.
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{0.562500, 0.687500},
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{0.437500, 0.312500},
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{0.812500, 0.437500},
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{0.312500, 0.812500},
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{0.187500, 0.187500},
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{0.062500, 0.562500},
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{0.687500, 0.062500},
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{0.937500, 0.937500}
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},
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SamplePattern{ // NVIDIA, msaa16.
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{0.062500, 0.000000},
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{0.250000, 0.125000},
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{0.187500, 0.375000},
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{0.437500, 0.312500},
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{0.500000, 0.062500},
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{0.687500, 0.187500},
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{0.750000, 0.437500},
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{0.937500, 0.250000},
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{0.000000, 0.500000},
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{0.312500, 0.625000},
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{0.125000, 0.750000},
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{0.375000, 0.875000},
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{0.562500, 0.562500},
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{0.812500, 0.687500},
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{0.625000, 0.812500},
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{0.875000, 0.937500}
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},
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SamplePattern{ // NVIDIA, mixed samples, 16:1.
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{0.250000, 0.125000},
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{0.625000, 0.812500},
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{0.500000, 0.062500},
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{0.812500, 0.687500},
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{0.187500, 0.375000},
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{0.875000, 0.937500},
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{0.125000, 0.750000},
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{0.750000, 0.437500},
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{0.937500, 0.250000},
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{0.312500, 0.625000},
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{0.437500, 0.312500},
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{0.000000, 0.500000},
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{0.375000, 0.875000},
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{0.687500, 0.187500},
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{0.062500, 0.000000},
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{0.562500, 0.562500}
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}
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};
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constexpr int numTestPatterns = SK_ARRAY_COUNT(kTestPatterns);
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class TestSampleLocationsInterface : public SkNoncopyable {
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public:
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virtual void overrideSamplePattern(const SamplePattern&) = 0;
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virtual ~TestSampleLocationsInterface() {}
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};
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void assert_equal(skiatest::Reporter* reporter, const SamplePattern& pattern,
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const GrGpu::MultisampleSpecs& specs, bool flipY) {
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GrAlwaysAssert(specs.fSampleLocations);
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if ((int)pattern.size() != specs.fEffectiveSampleCnt) {
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REPORT_FAILURE(reporter, "", SkString("Sample pattern has wrong number of samples."));
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return;
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}
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for (int i = 0; i < specs.fEffectiveSampleCnt; ++i) {
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SkPoint expectedLocation = specs.fSampleLocations[i];
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if (flipY) {
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expectedLocation.fY = 1 - expectedLocation.fY;
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}
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if (pattern[i] != expectedLocation) {
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REPORT_FAILURE(reporter, "", SkString("Sample pattern has wrong sample location."));
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return;
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}
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}
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}
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void test_sampleLocations(skiatest::Reporter* reporter, TestSampleLocationsInterface* testInterface,
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GrContext* ctx) {
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SkRandom rand;
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sk_sp<GrRenderTargetContext> bottomUps[numTestPatterns];
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sk_sp<GrRenderTargetContext> topDowns[numTestPatterns];
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for (int i = 0; i < numTestPatterns; ++i) {
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int numSamples = (int)kTestPatterns[i].size();
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GrAlwaysAssert(numSamples > 1 && SkIsPow2(numSamples));
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2017-09-13 19:25:47 +00:00
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bottomUps[i] = ctx->makeDeferredRenderTargetContext(
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SkBackingFit::kExact, 100, 100, kRGBA_8888_GrPixelConfig, nullptr,
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2017-10-30 17:41:26 +00:00
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rand.nextRangeU(1 + numSamples / 2, numSamples), GrMipMapped::kNo,
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kBottomLeft_GrSurfaceOrigin);
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topDowns[i] = ctx->makeDeferredRenderTargetContext(
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SkBackingFit::kExact, 100, 100, kRGBA_8888_GrPixelConfig, nullptr,
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rand.nextRangeU(1 + numSamples / 2, numSamples), GrMipMapped::kNo,
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kTopLeft_GrSurfaceOrigin);
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}
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// Ensure all sample locations get queried and/or cached properly.
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for (int repeat = 0; repeat < 2; ++repeat) {
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for (int i = 0; i < numTestPatterns; ++i) {
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testInterface->overrideSamplePattern(kTestPatterns[i]);
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2017-06-06 18:27:16 +00:00
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for (GrRenderTargetContext* rtc : {bottomUps[i].get(), topDowns[i].get()}) {
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2017-07-26 19:48:41 +00:00
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GrPipeline dummyPipeline(rtc->asRenderTargetProxy(),
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GrPipeline::ScissorState::kDisabled,
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SkBlendMode::kSrcOver);
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GrRenderTarget* rt = rtc->accessRenderTarget();
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assert_equal(reporter, kTestPatterns[i],
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rt->renderTargetPriv().getMultisampleSpecs(dummyPipeline),
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2017-07-27 20:16:25 +00:00
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kBottomLeft_GrSurfaceOrigin == rtc->asSurfaceProxy()->origin());
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}
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2016-07-06 16:59:43 +00:00
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}
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}
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2016-07-06 16:59:43 +00:00
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class GLTestSampleLocationsInterface : public TestSampleLocationsInterface, public GrGLInterface {
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public:
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GLTestSampleLocationsInterface() : fTestContext(sk_gpu_test::CreateDebugGLTestContext()) {
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fStandard = fTestContext->gl()->fStandard;
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fExtensions = fTestContext->gl()->fExtensions;
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fFunctions = fTestContext->gl()->fFunctions;
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fFunctions.fGetIntegerv = [&](GrGLenum pname, GrGLint* params) {
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GrAlwaysAssert(GR_GL_EFFECTIVE_RASTER_SAMPLES != pname);
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if (GR_GL_SAMPLES == pname) {
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GrAlwaysAssert(!fSamplePattern.empty());
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*params = (int)fSamplePattern.size();
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} else {
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fTestContext->gl()->fFunctions.fGetIntegerv(pname, params);
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}
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};
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fFunctions.fGetMultisamplefv = [&](GrGLenum pname, GrGLuint index, GrGLfloat* val) {
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GrAlwaysAssert(GR_GL_SAMPLE_POSITION == pname);
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val[0] = fSamplePattern[index].fX;
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val[1] = fSamplePattern[index].fY;
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};
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}
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operator GrBackendContext() {
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return reinterpret_cast<GrBackendContext>(static_cast<GrGLInterface*>(this));
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}
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void overrideSamplePattern(const SamplePattern& newPattern) override {
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fSamplePattern = newPattern;
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}
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private:
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2016-11-03 18:40:50 +00:00
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std::unique_ptr<sk_gpu_test::GLTestContext> fTestContext;
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SamplePattern fSamplePattern;
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};
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DEF_GPUTEST(GLSampleLocations, reporter, /*factory*/) {
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GLTestSampleLocationsInterface testInterface;
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2017-07-25 14:05:01 +00:00
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sk_sp<GrContext> ctx(GrContext::MakeGL(&testInterface));
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2017-05-08 19:02:07 +00:00
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// This test relies on at least 2 samples.
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2017-07-19 18:47:42 +00:00
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int supportedSample = ctx->caps()->getSampleCount(2, kRGBA_8888_GrPixelConfig);
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if (supportedSample < 2) {
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2017-05-08 19:02:07 +00:00
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return;
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}
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2016-11-04 15:49:42 +00:00
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test_sampleLocations(reporter, &testInterface, ctx.get());
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}
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#endif
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