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Side by Side Diff: tests/GpuSampleLocationsTest.cpp

Issue 2120403002: Revert of Fix caching of sample locations (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 4 years, 5 months ago
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1 /*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "SkTypes.h"
9 #include "SkPoint.h"
10 #include "Test.h"
11 #include <vector>
12
13 #if SK_SUPPORT_GPU
14
15 #include "GrRenderTargetPriv.h"
16 #include "gl/GrGLGpu.h"
17 #include "gl/debug/DebugGLTestContext.h"
18
19 typedef std::vector<SkPoint> SamplePattern;
20
21 static const SamplePattern kTestPatterns[] = {
22 SamplePattern{ // Intel on mac, msaa8, offscreen.
23 {0.562500, 0.312500},
24 {0.437500, 0.687500},
25 {0.812500, 0.562500},
26 {0.312500, 0.187500},
27 {0.187500, 0.812500},
28 {0.062500, 0.437500},
29 {0.687500, 0.937500},
30 {0.937500, 0.062500}
31 },
32
33 SamplePattern{ // Intel on mac, msaa8, on-screen.
34 {0.562500, 0.687500},
35 {0.437500, 0.312500},
36 {0.812500, 0.437500},
37 {0.312500, 0.812500},
38 {0.187500, 0.187500},
39 {0.062500, 0.562500},
40 {0.687500, 0.062500},
41 {0.937500, 0.937500}
42 },
43
44 SamplePattern{ // NVIDIA, msaa16.
45 {0.062500, 0.000000},
46 {0.250000, 0.125000},
47 {0.187500, 0.375000},
48 {0.437500, 0.312500},
49 {0.500000, 0.062500},
50 {0.687500, 0.187500},
51 {0.750000, 0.437500},
52 {0.937500, 0.250000},
53 {0.000000, 0.500000},
54 {0.312500, 0.625000},
55 {0.125000, 0.750000},
56 {0.375000, 0.875000},
57 {0.562500, 0.562500},
58 {0.812500, 0.687500},
59 {0.625000, 0.812500},
60 {0.875000, 0.937500}
61 },
62
63 SamplePattern{ // NVIDIA, mixed samples, 16:1.
64 {0.250000, 0.125000},
65 {0.625000, 0.812500},
66 {0.500000, 0.062500},
67 {0.812500, 0.687500},
68 {0.187500, 0.375000},
69 {0.875000, 0.937500},
70 {0.125000, 0.750000},
71 {0.750000, 0.437500},
72 {0.937500, 0.250000},
73 {0.312500, 0.625000},
74 {0.437500, 0.312500},
75 {0.000000, 0.500000},
76 {0.375000, 0.875000},
77 {0.687500, 0.187500},
78 {0.062500, 0.000000},
79 {0.562500, 0.562500}
80 }
81 };
82 constexpr int numTestPatterns = SK_ARRAY_COUNT(kTestPatterns);
83
84 class TestSampleLocationsInterface : public SkNoncopyable {
85 public:
86 virtual void overrideSamplePattern(const SamplePattern&) = 0;
87 virtual ~TestSampleLocationsInterface() {}
88 };
89
90 GrRenderTarget* SK_WARN_UNUSED_RESULT create_render_target(GrContext* ctx, GrSur faceOrigin origin,
91 int numSamples) {
92 GrSurfaceDesc desc;
93 desc.fFlags = kRenderTarget_GrSurfaceFlag;
94 desc.fOrigin = origin;
95 desc.fWidth = 100;
96 desc.fHeight = 100;
97 desc.fConfig = kBGRA_8888_GrPixelConfig;
98 desc.fSampleCnt = numSamples;
99 return ctx->textureProvider()->createTexture(desc, SkBudgeted::kNo, 0, 0)->a sRenderTarget();
100 }
101
102 void assert_equal(skiatest::Reporter* reporter, const SamplePattern& pattern,
103 const GrGpu::MultisampleSpecs& specs, bool flipY) {
104 GrAlwaysAssert(specs.fSampleLocations);
105 if ((int)pattern.size() != specs.fEffectiveSampleCnt) {
106 REPORTER_ASSERT_MESSAGE(reporter, false, "Sample pattern has wrong numbe r of samples.");
107 return;
108 }
109 for (int i = 0; i < specs.fEffectiveSampleCnt; ++i) {
110 SkPoint expectedLocation = specs.fSampleLocations[i];
111 if (flipY) {
112 expectedLocation.fY = 1 - expectedLocation.fY;
113 }
114 if (pattern[i] != expectedLocation) {
115 REPORTER_ASSERT_MESSAGE(reporter, false, "Sample pattern has wrong s ample location.");
116 return;
117 }
118 }
119 }
120
121 void test_sampleLocations(skiatest::Reporter* reporter, TestSampleLocationsInter face* testInterface,
122 GrContext* ctx) {
123 SkRandom rand;
124 SkAutoTUnref<GrRenderTarget> bottomUps[numTestPatterns];
125 SkAutoTUnref<GrRenderTarget> topDowns[numTestPatterns];
126 for (int i = 0; i < numTestPatterns; ++i) {
127 int numSamples = (int)kTestPatterns[i].size();
128 GrAlwaysAssert(numSamples > 1 && SkIsPow2(numSamples));
129 bottomUps[i].reset(create_render_target(ctx, kBottomLeft_GrSurfaceOrigin ,
130 rand.nextRangeU(1 + numSamples / 2, numSamples)));
131 topDowns[i].reset(create_render_target(ctx, kTopLeft_GrSurfaceOrigin,
132 rand.nextRangeU(1 + numSamples / 2, numSamples)));
133 }
134
135 // Ensure all sample locations get queried and/or cached properly.
136 GrStencilSettings dummyStencil;
137 for (int repeat = 0; repeat < 2; ++repeat) {
138 for (int i = 0; i < numTestPatterns; ++i) {
139 testInterface->overrideSamplePattern(kTestPatterns[i]);
140 assert_equal(reporter, kTestPatterns[i],
141 topDowns[i]->renderTargetPriv().getMultisampleSpecs(dum myStencil), false);
142 assert_equal(reporter, kTestPatterns[i],
143 bottomUps[i]->renderTargetPriv().getMultisampleSpecs(du mmyStencil), true);
144 }
145 }
146 }
147
148 //////////////////////////////////////////////////////////////////////////////// ////////////////////
149
150 class GLTestSampleLocationsInterface : public TestSampleLocationsInterface, publ ic GrGLInterface {
151 public:
152 GLTestSampleLocationsInterface() : fTestContext(sk_gpu_test::CreateDebugGLTe stContext()) {
153 fStandard = fTestContext->gl()->fStandard;
154 fExtensions = fTestContext->gl()->fExtensions;
155 fFunctions = fTestContext->gl()->fFunctions;
156
157 fFunctions.fGetIntegerv = [&](GrGLenum pname, GrGLint* params) {
158 GrAlwaysAssert(GR_GL_EFFECTIVE_RASTER_SAMPLES != pname);
159 if (GR_GL_SAMPLES == pname) {
160 GrAlwaysAssert(!fSamplePattern.empty());
161 *params = (int)fSamplePattern.size();
162 } else {
163 fTestContext->gl()->fFunctions.fGetIntegerv(pname, params);
164 }
165 };
166
167 fFunctions.fGetMultisamplefv = [&](GrGLenum pname, GrGLuint index, GrGLf loat* val) {
168 GrAlwaysAssert(GR_GL_SAMPLE_POSITION == pname);
169 val[0] = fSamplePattern[index].fX;
170 val[1] = fSamplePattern[index].fY;
171 };
172 }
173
174 operator GrBackendContext() {
175 return reinterpret_cast<GrBackendContext>(static_cast<GrGLInterface*>(th is));
176 }
177
178 void overrideSamplePattern(const SamplePattern& newPattern) override {
179 fSamplePattern = newPattern;
180 }
181
182 private:
183 SkAutoTDelete<sk_gpu_test::GLTestContext> fTestContext;
184 SamplePattern fSamplePattern;
185 };
186
187 DEF_GPUTEST(GLSampleLocations, reporter, /*factory*/) {
188 GLTestSampleLocationsInterface testInterface;
189 SkAutoTUnref<GrContext> ctx(GrContext::Create(kOpenGL_GrBackend, testInterfa ce));
190 test_sampleLocations(reporter, &testInterface, ctx);
191 }
192
193 #endif
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