1 /*
2 * Copyright 2015 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 "src/gpu/ops/GrDrawAtlasOp.h"
9
10 #include "include/core/SkRSXform.h"
11 #include "include/private/GrRecordingContext.h"
12 #include "include/utils/SkRandom.h"
13 #include "src/core/SkRectPriv.h"
14 #include "src/gpu/GrCaps.h"
15 #include "src/gpu/GrDefaultGeoProcFactory.h"
16 #include "src/gpu/GrDrawOpTest.h"
17 #include "src/gpu/GrOpFlushState.h"
18 #include "src/gpu/GrRecordingContextPriv.h"
19 #include "src/gpu/SkGr.h"
20 #include "src/gpu/ops/GrSimpleMeshDrawOpHelper.h"
21
22 namespace {
23
24 class DrawAtlasOp final : public GrMeshDrawOp {
25 private:
26 using Helper = GrSimpleMeshDrawOpHelper;
27
28 public:
29 DEFINE_OP_CLASS_ID
30
31 DrawAtlasOp(const Helper::MakeArgs&, const SkPMColor4f& color,
32 const SkMatrix& viewMatrix, GrAAType, int spriteCount, const SkRSXform* xforms,
33 const SkRect* rects, const SkColor* colors);
34
name() const35 const char* name() const override { return "DrawAtlasOp"; }
36
visitProxies(const VisitProxyFunc & func) const37 void visitProxies(const VisitProxyFunc& func) const override {
38 fHelper.visitProxies(func);
39 }
40
41 #ifdef SK_DEBUG
42 SkString dumpInfo() const override;
43 #endif
44
45 FixedFunctionFlags fixedFunctionFlags() const override;
46
47 GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*,
48 bool hasMixedSampledCoverage, GrClampType) override;
49
50 private:
51 void onPrepareDraws(Target*) override;
52 void onExecute(GrOpFlushState*, const SkRect& chainBounds) override;
53
color() const54 const SkPMColor4f& color() const { return fColor; }
viewMatrix() const55 const SkMatrix& viewMatrix() const { return fViewMatrix; }
hasColors() const56 bool hasColors() const { return fHasColors; }
quadCount() const57 int quadCount() const { return fQuadCount; }
58
59 CombineResult onCombineIfPossible(GrOp* t, const GrCaps&) override;
60
61 struct Geometry {
62 SkPMColor4f fColor;
63 SkTArray<uint8_t, true> fVerts;
64 };
65
66 SkSTArray<1, Geometry, true> fGeoData;
67 Helper fHelper;
68 SkMatrix fViewMatrix;
69 SkPMColor4f fColor;
70 int fQuadCount;
71 bool fHasColors;
72
73 typedef GrMeshDrawOp INHERITED;
74 };
75
make_gp(const GrShaderCaps * shaderCaps,bool hasColors,const SkPMColor4f & color,const SkMatrix & viewMatrix)76 static sk_sp<GrGeometryProcessor> make_gp(const GrShaderCaps* shaderCaps,
77 bool hasColors,
78 const SkPMColor4f& color,
79 const SkMatrix& viewMatrix) {
80 using namespace GrDefaultGeoProcFactory;
81 Color gpColor(color);
82 if (hasColors) {
83 gpColor.fType = Color::kPremulGrColorAttribute_Type;
84 }
85
86 return GrDefaultGeoProcFactory::Make(shaderCaps, gpColor, Coverage::kSolid_Type,
87 LocalCoords::kHasExplicit_Type, viewMatrix);
88 }
89
DrawAtlasOp(const Helper::MakeArgs & helperArgs,const SkPMColor4f & color,const SkMatrix & viewMatrix,GrAAType aaType,int spriteCount,const SkRSXform * xforms,const SkRect * rects,const SkColor * colors)90 DrawAtlasOp::DrawAtlasOp(const Helper::MakeArgs& helperArgs, const SkPMColor4f& color,
91 const SkMatrix& viewMatrix, GrAAType aaType, int spriteCount,
92 const SkRSXform* xforms, const SkRect* rects, const SkColor* colors)
93 : INHERITED(ClassID()), fHelper(helperArgs, aaType), fColor(color) {
94 SkASSERT(xforms);
95 SkASSERT(rects);
96
97 fViewMatrix = viewMatrix;
98 Geometry& installedGeo = fGeoData.push_back();
99 installedGeo.fColor = color;
100
101 // Figure out stride and offsets
102 // Order within the vertex is: position [color] texCoord
103 size_t texOffset = sizeof(SkPoint);
104 size_t vertexStride = 2 * sizeof(SkPoint);
105 fHasColors = SkToBool(colors);
106 if (colors) {
107 texOffset += sizeof(GrColor);
108 vertexStride += sizeof(GrColor);
109 }
110
111 // Compute buffer size and alloc buffer
112 fQuadCount = spriteCount;
113 int allocSize = static_cast<int>(4 * vertexStride * spriteCount);
114 installedGeo.fVerts.reset(allocSize);
115 uint8_t* currVertex = installedGeo.fVerts.begin();
116
117 SkRect bounds = SkRectPriv::MakeLargestInverted();
118 // TODO4F: Preserve float colors
119 int paintAlpha = GrColorUnpackA(installedGeo.fColor.toBytes_RGBA());
120 for (int spriteIndex = 0; spriteIndex < spriteCount; ++spriteIndex) {
121 // Transform rect
122 SkPoint strip[4];
123 const SkRect& currRect = rects[spriteIndex];
124 xforms[spriteIndex].toTriStrip(currRect.width(), currRect.height(), strip);
125
126 // Copy colors if necessary
127 if (colors) {
128 // convert to GrColor
129 SkColor color = colors[spriteIndex];
130 if (paintAlpha != 255) {
131 color = SkColorSetA(color, SkMulDiv255Round(SkColorGetA(color), paintAlpha));
132 }
133 GrColor grColor = SkColorToPremulGrColor(color);
134
135 *(reinterpret_cast<GrColor*>(currVertex + sizeof(SkPoint))) = grColor;
136 *(reinterpret_cast<GrColor*>(currVertex + vertexStride + sizeof(SkPoint))) = grColor;
137 *(reinterpret_cast<GrColor*>(currVertex + 2 * vertexStride + sizeof(SkPoint))) =
138 grColor;
139 *(reinterpret_cast<GrColor*>(currVertex + 3 * vertexStride + sizeof(SkPoint))) =
140 grColor;
141 }
142
143 // Copy position and uv to verts
144 *(reinterpret_cast<SkPoint*>(currVertex)) = strip[0];
145 *(reinterpret_cast<SkPoint*>(currVertex + texOffset)) =
146 SkPoint::Make(currRect.fLeft, currRect.fTop);
147 SkRectPriv::GrowToInclude(&bounds, strip[0]);
148 currVertex += vertexStride;
149
150 *(reinterpret_cast<SkPoint*>(currVertex)) = strip[1];
151 *(reinterpret_cast<SkPoint*>(currVertex + texOffset)) =
152 SkPoint::Make(currRect.fLeft, currRect.fBottom);
153 SkRectPriv::GrowToInclude(&bounds, strip[1]);
154 currVertex += vertexStride;
155
156 *(reinterpret_cast<SkPoint*>(currVertex)) = strip[2];
157 *(reinterpret_cast<SkPoint*>(currVertex + texOffset)) =
158 SkPoint::Make(currRect.fRight, currRect.fTop);
159 SkRectPriv::GrowToInclude(&bounds, strip[2]);
160 currVertex += vertexStride;
161
162 *(reinterpret_cast<SkPoint*>(currVertex)) = strip[3];
163 *(reinterpret_cast<SkPoint*>(currVertex + texOffset)) =
164 SkPoint::Make(currRect.fRight, currRect.fBottom);
165 SkRectPriv::GrowToInclude(&bounds, strip[3]);
166 currVertex += vertexStride;
167 }
168
169 this->setTransformedBounds(bounds, viewMatrix, HasAABloat::kNo, IsZeroArea::kNo);
170 }
171
172 #ifdef SK_DEBUG
dumpInfo() const173 SkString DrawAtlasOp::dumpInfo() const {
174 SkString string;
175 for (const auto& geo : fGeoData) {
176 string.appendf("Color: 0x%08x, Quads: %d\n", geo.fColor.toBytes_RGBA(),
177 geo.fVerts.count() / 4);
178 }
179 string += fHelper.dumpInfo();
180 string += INHERITED::dumpInfo();
181 return string;
182 }
183 #endif
184
onPrepareDraws(Target * target)185 void DrawAtlasOp::onPrepareDraws(Target* target) {
186 // Setup geometry processor
187 sk_sp<GrGeometryProcessor> gp(make_gp(target->caps().shaderCaps(),
188 this->hasColors(),
189 this->color(),
190 this->viewMatrix()));
191
192 int instanceCount = fGeoData.count();
193 size_t vertexStride = gp->vertexStride();
194
195 int numQuads = this->quadCount();
196 QuadHelper helper(target, vertexStride, numQuads);
197 void* verts = helper.vertices();
198 if (!verts) {
199 SkDebugf("Could not allocate vertices\n");
200 return;
201 }
202
203 uint8_t* vertPtr = reinterpret_cast<uint8_t*>(verts);
204 for (int i = 0; i < instanceCount; i++) {
205 const Geometry& args = fGeoData[i];
206
207 size_t allocSize = args.fVerts.count();
208 memcpy(vertPtr, args.fVerts.begin(), allocSize);
209 vertPtr += allocSize;
210 }
211 helper.recordDraw(target, std::move(gp));
212 }
213
onExecute(GrOpFlushState * flushState,const SkRect & chainBounds)214 void DrawAtlasOp::onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) {
215 fHelper.executeDrawsAndUploads(this, flushState, chainBounds);
216 }
217
onCombineIfPossible(GrOp * t,const GrCaps & caps)218 GrOp::CombineResult DrawAtlasOp::onCombineIfPossible(GrOp* t, const GrCaps& caps) {
219 DrawAtlasOp* that = t->cast<DrawAtlasOp>();
220
221 if (!fHelper.isCompatible(that->fHelper, caps, this->bounds(), that->bounds())) {
222 return CombineResult::kCannotCombine;
223 }
224
225 // We currently use a uniform viewmatrix for this op.
226 if (!this->viewMatrix().cheapEqualTo(that->viewMatrix())) {
227 return CombineResult::kCannotCombine;
228 }
229
230 if (this->hasColors() != that->hasColors()) {
231 return CombineResult::kCannotCombine;
232 }
233
234 if (!this->hasColors() && this->color() != that->color()) {
235 return CombineResult::kCannotCombine;
236 }
237
238 fGeoData.push_back_n(that->fGeoData.count(), that->fGeoData.begin());
239 fQuadCount += that->quadCount();
240
241 return CombineResult::kMerged;
242 }
243
fixedFunctionFlags() const244 GrDrawOp::FixedFunctionFlags DrawAtlasOp::fixedFunctionFlags() const {
245 return fHelper.fixedFunctionFlags();
246 }
247
finalize(const GrCaps & caps,const GrAppliedClip * clip,bool hasMixedSampledCoverage,GrClampType clampType)248 GrProcessorSet::Analysis DrawAtlasOp::finalize(
249 const GrCaps& caps, const GrAppliedClip* clip, bool hasMixedSampledCoverage,
250 GrClampType clampType) {
251 GrProcessorAnalysisColor gpColor;
252 if (this->hasColors()) {
253 gpColor.setToUnknown();
254 } else {
255 gpColor.setToConstant(fColor);
256 }
257 auto result = fHelper.finalizeProcessors(caps, clip, hasMixedSampledCoverage, clampType,
258 GrProcessorAnalysisCoverage::kNone, &gpColor);
259 if (gpColor.isConstant(&fColor)) {
260 fHasColors = false;
261 }
262 return result;
263 }
264
265 } // anonymous namespace
266
Make(GrRecordingContext * context,GrPaint && paint,const SkMatrix & viewMatrix,GrAAType aaType,int spriteCount,const SkRSXform * xforms,const SkRect * rects,const SkColor * colors)267 std::unique_ptr<GrDrawOp> GrDrawAtlasOp::Make(GrRecordingContext* context,
268 GrPaint&& paint,
269 const SkMatrix& viewMatrix,
270 GrAAType aaType,
271 int spriteCount,
272 const SkRSXform* xforms,
273 const SkRect* rects,
274 const SkColor* colors) {
275 return GrSimpleMeshDrawOpHelper::FactoryHelper<DrawAtlasOp>(context, std::move(paint),
276 viewMatrix, aaType,
277 spriteCount, xforms,
278 rects, colors);
279 }
280
281 #if GR_TEST_UTILS
282
random_xform(SkRandom * random)283 static SkRSXform random_xform(SkRandom* random) {
284 static const SkScalar kMinExtent = -100.f;
285 static const SkScalar kMaxExtent = 100.f;
286 static const SkScalar kMinScale = 0.1f;
287 static const SkScalar kMaxScale = 100.f;
288 static const SkScalar kMinRotate = -SK_ScalarPI;
289 static const SkScalar kMaxRotate = SK_ScalarPI;
290
291 SkRSXform xform = SkRSXform::MakeFromRadians(random->nextRangeScalar(kMinScale, kMaxScale),
292 random->nextRangeScalar(kMinRotate, kMaxRotate),
293 random->nextRangeScalar(kMinExtent, kMaxExtent),
294 random->nextRangeScalar(kMinExtent, kMaxExtent),
295 random->nextRangeScalar(kMinExtent, kMaxExtent),
296 random->nextRangeScalar(kMinExtent, kMaxExtent));
297 return xform;
298 }
299
random_texRect(SkRandom * random)300 static SkRect random_texRect(SkRandom* random) {
301 static const SkScalar kMinCoord = 0.0f;
302 static const SkScalar kMaxCoord = 1024.f;
303
304 SkRect texRect = SkRect::MakeLTRB(random->nextRangeScalar(kMinCoord, kMaxCoord),
305 random->nextRangeScalar(kMinCoord, kMaxCoord),
306 random->nextRangeScalar(kMinCoord, kMaxCoord),
307 random->nextRangeScalar(kMinCoord, kMaxCoord));
308 texRect.sort();
309 return texRect;
310 }
311
randomize_params(uint32_t count,SkRandom * random,SkTArray<SkRSXform> * xforms,SkTArray<SkRect> * texRects,SkTArray<GrColor> * colors,bool hasColors)312 static void randomize_params(uint32_t count, SkRandom* random, SkTArray<SkRSXform>* xforms,
313 SkTArray<SkRect>* texRects, SkTArray<GrColor>* colors,
314 bool hasColors) {
315 for (uint32_t v = 0; v < count; v++) {
316 xforms->push_back(random_xform(random));
317 texRects->push_back(random_texRect(random));
318 if (hasColors) {
319 colors->push_back(GrRandomColor(random));
320 }
321 }
322 }
323
GR_DRAW_OP_TEST_DEFINE(DrawAtlasOp)324 GR_DRAW_OP_TEST_DEFINE(DrawAtlasOp) {
325 uint32_t spriteCount = random->nextRangeU(1, 100);
326
327 SkTArray<SkRSXform> xforms(spriteCount);
328 SkTArray<SkRect> texRects(spriteCount);
329 SkTArray<GrColor> colors;
330
331 bool hasColors = random->nextBool();
332
333 randomize_params(spriteCount, random, &xforms, &texRects, &colors, hasColors);
334
335 SkMatrix viewMatrix = GrTest::TestMatrix(random);
336 GrAAType aaType = GrAAType::kNone;
337 if (numSamples > 1 && random->nextBool()) {
338 aaType = GrAAType::kMSAA;
339 }
340
341 return GrDrawAtlasOp::Make(context, std::move(paint), viewMatrix, aaType, spriteCount,
342 xforms.begin(), texRects.begin(),
343 hasColors ? colors.begin() : nullptr);
344 }
345
346 #endif
347