1 /*
2 * Copyright 2018 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 "gm/gm.h"
9 #include "include/core/SkBlendMode.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkColorSpace.h"
12 #include "include/core/SkMatrix.h"
13 #include "include/core/SkPoint.h"
14 #include "include/core/SkRect.h"
15 #include "include/core/SkRefCnt.h"
16 #include "include/core/SkSize.h"
17 #include "include/core/SkString.h"
18 #include "include/core/SkTypes.h"
19 #include "include/gpu/ganesh/GrRecordingContext.h"
20 #include "include/gpu/ganesh/GrTypes.h"
21 #include "include/private/SkColorData.h"
22 #include "include/private/gpu/ganesh/GrTypesPriv.h"
23 #include "src/core/SkCanvasPriv.h"
24 #include "src/gpu/KeyBuilder.h"
25 #include "src/gpu/ganesh/GrBuffer.h"
26 #include "src/gpu/ganesh/GrCanvas.h"
27 #include "src/gpu/ganesh/GrCaps.h"
28 #include "src/gpu/ganesh/GrColorSpaceXform.h"
29 #include "src/gpu/ganesh/GrDirectContextPriv.h"
30 #include "src/gpu/ganesh/GrGeometryProcessor.h"
31 #include "src/gpu/ganesh/GrGpuBuffer.h"
32 #include "src/gpu/ganesh/GrMemoryPool.h"
33 #include "src/gpu/ganesh/GrOpFlushState.h"
34 #include "src/gpu/ganesh/GrOpsRenderPass.h"
35 #include "src/gpu/ganesh/GrPipeline.h"
36 #include "src/gpu/ganesh/GrProcessor.h"
37 #include "src/gpu/ganesh/GrProcessorSet.h"
38 #include "src/gpu/ganesh/GrProgramInfo.h"
39 #include "src/gpu/ganesh/GrRecordingContextPriv.h"
40 #include "src/gpu/ganesh/GrResourceProvider.h"
41 #include "src/gpu/ganesh/GrSamplerState.h"
42 #include "src/gpu/ganesh/GrShaderCaps.h"
43 #include "src/gpu/ganesh/GrShaderVar.h"
44 #include "src/gpu/ganesh/GrSurfaceProxy.h"
45 #include "src/gpu/ganesh/GrTextureProxy.h"
46 #include "src/gpu/ganesh/SurfaceDrawContext.h"
47 #include "src/gpu/ganesh/glsl/GrGLSLFragmentShaderBuilder.h"
48 #include "src/gpu/ganesh/glsl/GrGLSLVarying.h"
49 #include "src/gpu/ganesh/ops/GrDrawOp.h"
50 #include "src/gpu/ganesh/ops/GrOp.h"
51 #include "tools/gpu/ProxyUtils.h"
52
53 #include <memory>
54 #include <utility>
55
56 class GrAppliedClip;
57 class GrGLSLProgramDataManager;
58
59 namespace {
60
61 static constexpr GrGeometryProcessor::Attribute gVertex =
62 {"position", kFloat2_GrVertexAttribType, SkSLType::kFloat2};
63
64 ////////////////////////////////////////////////////////////////////////////////////////////////////
65 // SkSL code.
66
67 class ClockwiseTestProcessor : public GrGeometryProcessor {
68 public:
Make(SkArenaAlloc * arena,bool readSkFragCoord)69 static GrGeometryProcessor* Make(SkArenaAlloc* arena, bool readSkFragCoord) {
70 return arena->make([&](void* ptr) {
71 return new (ptr) ClockwiseTestProcessor(readSkFragCoord);
72 });
73 }
74
name() const75 const char* name() const final { return "ClockwiseTestProcessor"; }
76
addToKey(const GrShaderCaps &,skgpu::KeyBuilder * b) const77 void addToKey(const GrShaderCaps&, skgpu::KeyBuilder* b) const final {
78 b->add32(fReadSkFragCoord);
79 }
80
81 std::unique_ptr<ProgramImpl> makeProgramImpl(const GrShaderCaps&) const final;
82
readSkFragCoord() const83 bool readSkFragCoord() const { return fReadSkFragCoord; }
84
85 private:
ClockwiseTestProcessor(bool readSkFragCoord)86 ClockwiseTestProcessor(bool readSkFragCoord)
87 : GrGeometryProcessor(kClockwiseTestProcessor_ClassID)
88 , fReadSkFragCoord(readSkFragCoord) {
89 this->setVertexAttributesWithImplicitOffsets(&gVertex, 1);
90 }
91
92 const bool fReadSkFragCoord;
93
94 using INHERITED = GrGeometryProcessor;
95 };
96
makeProgramImpl(const GrShaderCaps &) const97 std::unique_ptr<GrGeometryProcessor::ProgramImpl> ClockwiseTestProcessor::makeProgramImpl(
98 const GrShaderCaps&) const {
99 class Impl : public ProgramImpl {
100 public:
101 void setData(const GrGLSLProgramDataManager&,
102 const GrShaderCaps&,
103 const GrGeometryProcessor&) override {}
104
105 private:
106 void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
107 const ClockwiseTestProcessor& proc = args.fGeomProc.cast<ClockwiseTestProcessor>();
108 args.fVaryingHandler->emitAttributes(proc);
109 gpArgs->fPositionVar.set(SkSLType::kFloat2, "position");
110 args.fFragBuilder->codeAppendf(
111 "half4 %s = sk_Clockwise ? half4(0,1,0,1) : half4(1,0,0,1);",
112 args.fOutputColor);
113 if (!proc.readSkFragCoord()) {
114 args.fFragBuilder->codeAppendf("const half4 %s = half4(1);", args.fOutputCoverage);
115 } else {
116 // Verify layout(origin_upper_left) on gl_FragCoord does not affect gl_FrontFacing.
117 args.fFragBuilder->codeAppendf("half4 %s = half4(min(half(sk_FragCoord.y), 1));",
118 args.fOutputCoverage);
119 }
120 }
121 };
122
123 return std::make_unique<Impl>();
124 }
125
126 ////////////////////////////////////////////////////////////////////////////////////////////////////
127 // Draw Op.
128
129 class ClockwiseTestOp : public GrDrawOp {
130 public:
131 DEFINE_OP_CLASS_ID
132
Make(GrRecordingContext * context,bool readSkFragCoord,int y=0)133 static GrOp::Owner Make(GrRecordingContext* context,
134 bool readSkFragCoord, int y = 0) {
135 return GrOp::Make<ClockwiseTestOp>(context, readSkFragCoord, y);
136 }
137
138 private:
ClockwiseTestOp(bool readSkFragCoord,float y)139 ClockwiseTestOp(bool readSkFragCoord, float y)
140 : GrDrawOp(ClassID())
141 , fReadSkFragCoord(readSkFragCoord)
142 , fY(y) {
143 this->setBounds(SkRect::MakeXYWH(0, fY, 100, 100), HasAABloat::kNo, IsHairline::kNo);
144 }
145
name() const146 const char* name() const override { return "ClockwiseTestOp"; }
fixedFunctionFlags() const147 FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
finalize(const GrCaps &,const GrAppliedClip *,GrClampType)148 GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*, GrClampType) override {
149 return GrProcessorSet::EmptySetAnalysis();
150 }
151
createProgramInfo(const GrCaps * caps,SkArenaAlloc * arena,const GrSurfaceProxyView & writeView,bool usesMSAASurface,GrAppliedClip && appliedClip,const GrDstProxyView & dstProxyView,GrXferBarrierFlags renderPassXferBarriers,GrLoadOp colorLoadOp) const152 GrProgramInfo* createProgramInfo(const GrCaps* caps,
153 SkArenaAlloc* arena,
154 const GrSurfaceProxyView& writeView,
155 bool usesMSAASurface,
156 GrAppliedClip&& appliedClip,
157 const GrDstProxyView& dstProxyView,
158 GrXferBarrierFlags renderPassXferBarriers,
159 GrLoadOp colorLoadOp) const {
160 GrGeometryProcessor* geomProc = ClockwiseTestProcessor::Make(arena, fReadSkFragCoord);
161
162 return sk_gpu_test::CreateProgramInfo(caps, arena, writeView, usesMSAASurface,
163 std::move(appliedClip), dstProxyView,
164 geomProc, SkBlendMode::kPlus,
165 GrPrimitiveType::kTriangleStrip,
166 renderPassXferBarriers, colorLoadOp);
167 }
168
createProgramInfo(GrOpFlushState * flushState) const169 GrProgramInfo* createProgramInfo(GrOpFlushState* flushState) const {
170 return this->createProgramInfo(&flushState->caps(),
171 flushState->allocator(),
172 flushState->writeView(),
173 flushState->usesMSAASurface(),
174 flushState->detachAppliedClip(),
175 flushState->dstProxyView(),
176 flushState->renderPassBarriers(),
177 flushState->colorLoadOp());
178 }
179
onPrePrepare(GrRecordingContext * context,const GrSurfaceProxyView & writeView,GrAppliedClip * clip,const GrDstProxyView & dstProxyView,GrXferBarrierFlags renderPassXferBarriers,GrLoadOp colorLoadOp)180 void onPrePrepare(GrRecordingContext* context,
181 const GrSurfaceProxyView& writeView,
182 GrAppliedClip* clip,
183 const GrDstProxyView& dstProxyView,
184 GrXferBarrierFlags renderPassXferBarriers,
185 GrLoadOp colorLoadOp) final {
186 SkArenaAlloc* arena = context->priv().recordTimeAllocator();
187
188 // DMSAA is not supported on DDL.
189 bool usesMSAASurface = writeView.asRenderTargetProxy()->numSamples() > 1;
190
191 // This is equivalent to a GrOpFlushState::detachAppliedClip
192 GrAppliedClip appliedClip = clip ? std::move(*clip) : GrAppliedClip::Disabled();
193
194 fProgramInfo = this->createProgramInfo(context->priv().caps(), arena, writeView,
195 usesMSAASurface, std::move(appliedClip),
196 dstProxyView, renderPassXferBarriers, colorLoadOp);
197
198 context->priv().recordProgramInfo(fProgramInfo);
199 }
200
onPrepare(GrOpFlushState * flushState)201 void onPrepare(GrOpFlushState* flushState) override {
202 SkPoint vertices[4] = {
203 {100, fY},
204 {0, fY+100},
205 {0, fY},
206 {100, fY+100},
207 };
208 fVertexBuffer = flushState->resourceProvider()->createBuffer(vertices,
209 sizeof(vertices),
210 GrGpuBufferType::kVertex,
211 kStatic_GrAccessPattern);
212 }
213
onExecute(GrOpFlushState * flushState,const SkRect & chainBounds)214 void onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) override {
215 if (!fVertexBuffer) {
216 return;
217 }
218
219 if (!fProgramInfo) {
220 fProgramInfo = this->createProgramInfo(flushState);
221 }
222
223 flushState->bindPipeline(*fProgramInfo, SkRect::MakeXYWH(0, fY, 100, 100));
224 flushState->bindBuffers(nullptr, nullptr, std::move(fVertexBuffer));
225 flushState->draw(4, 0);
226 }
227
228 sk_sp<GrBuffer> fVertexBuffer;
229 const bool fReadSkFragCoord;
230 const float fY;
231
232 // The program info (and both the GrPipeline and GrGeometryProcessor it relies on), when
233 // allocated, are allocated in either the ddl-record-time or flush-time arena. It is the
234 // arena's job to free up their memory so we just have a bare programInfo pointer here. We
235 // don't even store the GrPipeline and GrGeometryProcessor pointers here bc they are
236 // guaranteed to have the same lifetime as the program info.
237 GrProgramInfo* fProgramInfo = nullptr;
238
239 friend class ::GrOp; // for ctor
240
241 using INHERITED = GrDrawOp;
242 };
243
244 } // namespace
245
246 ////////////////////////////////////////////////////////////////////////////////////////////////////
247 // Test.
248
249 namespace skiagm {
250
251 /**
252 * This is a GPU-backend specific test. It ensures that SkSL properly identifies clockwise-winding
253 * triangles (sk_Clockwise), in terms of to Skia device space, in all backends and with all render
254 * target origins. We draw clockwise triangles green and counter-clockwise red.
255 */
256 class ClockwiseGM : public GpuGM {
getName() const257 SkString getName() const override { return SkString("clockwise"); }
getISize()258 SkISize getISize() override { return {300, 200}; }
259 DrawResult onDraw(GrRecordingContext*, SkCanvas*, SkString* errorMsg) override;
260 };
261
onDraw(GrRecordingContext * rContext,SkCanvas * canvas,SkString * errorMsg)262 DrawResult ClockwiseGM::onDraw(GrRecordingContext* rContext, SkCanvas* canvas, SkString* errorMsg) {
263 auto sdc = skgpu::ganesh::TopDeviceSurfaceDrawContext(canvas);
264 if (!sdc) {
265 *errorMsg = kErrorMsg_DrawSkippedGpuOnly;
266 return DrawResult::kSkip;
267 }
268
269 sdc->clear(SK_PMColor4fBLACK);
270
271 // Draw the test directly to the frame buffer.
272 sdc->addDrawOp(ClockwiseTestOp::Make(rContext, false, 0));
273 sdc->addDrawOp(ClockwiseTestOp::Make(rContext, true, 100));
274
275 // Draw the test to an off-screen, top-down render target.
276 GrColorType sdcColorType = sdc->colorInfo().colorType();
277 if (auto topLeftSDC = skgpu::ganesh::SurfaceDrawContext::Make(rContext,
278 sdcColorType,
279 nullptr,
280 SkBackingFit::kExact,
281 {100, 200},
282 SkSurfaceProps(),
283 /*label=*/{},
284 /* sampleCnt= */ 1,
285 skgpu::Mipmapped::kNo,
286 GrProtected::kNo,
287 kTopLeft_GrSurfaceOrigin,
288 skgpu::Budgeted::kYes)) {
289 topLeftSDC->clear(SK_PMColor4fTRANSPARENT);
290 topLeftSDC->addDrawOp(ClockwiseTestOp::Make(rContext, false, 0));
291 topLeftSDC->addDrawOp(ClockwiseTestOp::Make(rContext, true, 100));
292 sdc->drawTexture(nullptr,
293 topLeftSDC->readSurfaceView(),
294 sdc->colorInfo().alphaType(),
295 GrSamplerState::Filter::kNearest,
296 GrSamplerState::MipmapMode::kNone,
297 SkBlendMode::kSrcOver,
298 SK_PMColor4fWHITE,
299 {0, 0, 100, 200},
300 {100, 0, 200, 200},
301 GrQuadAAFlags::kNone,
302 SkCanvas::SrcRectConstraint::kStrict_SrcRectConstraint,
303 SkMatrix::I(),
304 nullptr);
305 }
306
307 // Draw the test to an off-screen, bottom-up render target.
308 if (auto topLeftSDC = skgpu::ganesh::SurfaceDrawContext::Make(rContext,
309 sdcColorType,
310 nullptr,
311 SkBackingFit::kExact,
312 {100, 200},
313 SkSurfaceProps(),
314 /*label=*/{})) {
315 topLeftSDC->clear(SK_PMColor4fTRANSPARENT);
316 topLeftSDC->addDrawOp(ClockwiseTestOp::Make(rContext, false, 0));
317 topLeftSDC->addDrawOp(ClockwiseTestOp::Make(rContext, true, 100));
318 sdc->drawTexture(nullptr,
319 topLeftSDC->readSurfaceView(),
320 sdc->colorInfo().alphaType(),
321 GrSamplerState::Filter::kNearest,
322 GrSamplerState::MipmapMode::kNone,
323 SkBlendMode::kSrcOver,
324 SK_PMColor4fWHITE,
325 {0, 0, 100, 200},
326 {200, 0, 300, 200},
327 GrQuadAAFlags::kNone,
328 SkCanvas::SrcRectConstraint::kStrict_SrcRectConstraint,
329 SkMatrix::I(),
330 nullptr);
331 }
332
333 return DrawResult::kOk;
334 }
335
336 ////////////////////////////////////////////////////////////////////////////////////////////////////
337
338 DEF_GM( return new ClockwiseGM(); )
339
340 } // namespace skiagm
341