commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2014 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
| 9 | // This test only works with the GPU backend. |
| 10 | |
| 11 | #include "gm.h" |
| 12 | |
| 13 | #if SK_SUPPORT_GPU |
| 14 | |
| 15 | #include "GrContext.h" |
| 16 | #include "GrPathUtils.h" |
| 17 | #include "GrTest.h" |
| 18 | #include "SkColorPriv.h" |
| 19 | #include "SkDevice.h" |
| 20 | #include "SkGeometry.h" |
| 21 | #include "SkTLList.h" |
| 22 | |
| 23 | #include "effects/GrConvexPolyEffect.h" |
| 24 | |
| 25 | namespace { |
| 26 | extern const GrVertexAttrib kAttribs[] = { |
| 27 | {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding}, |
| 28 | }; |
| 29 | } |
| 30 | |
| 31 | namespace skiagm { |
| 32 | /** |
| 33 | * This GM directly exercises a GrEffect that draws convex polygons. |
| 34 | */ |
| 35 | class ConvexPolyEffect : public GM { |
| 36 | public: |
| 37 | ConvexPolyEffect() { |
| 38 | this->setBGColor(0xFFFFFFFF); |
| 39 | } |
| 40 | |
| 41 | protected: |
| 42 | virtual SkString onShortName() SK_OVERRIDE { |
| 43 | return SkString("convex_poly_effect"); |
| 44 | } |
| 45 | |
| 46 | virtual SkISize onISize() SK_OVERRIDE { |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame^] | 47 | return make_isize(720, 800); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 48 | } |
| 49 | |
| 50 | virtual uint32_t onGetFlags() const SK_OVERRIDE { |
| 51 | // This is a GPU-specific GM. |
| 52 | return kGPUOnly_Flag; |
| 53 | } |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 54 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 55 | virtual void onOnceBeforeDraw() SK_OVERRIDE { |
| 56 | SkPath tri; |
| 57 | tri.moveTo(5.f, 5.f); |
| 58 | tri.lineTo(100.f, 20.f); |
| 59 | tri.lineTo(15.f, 100.f); |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 60 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 61 | fPaths.addToTail(tri); |
| 62 | fPaths.addToTail(SkPath())->reverseAddPath(tri); |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 63 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 64 | tri.close(); |
| 65 | fPaths.addToTail(tri); |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 66 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 67 | SkPath ngon; |
| 68 | static const SkScalar kRadius = 50.f; |
| 69 | const SkPoint center = { kRadius, kRadius }; |
| 70 | for (int i = 0; i < GrConvexPolyEffect::kMaxEdges; ++i) { |
| 71 | SkScalar angle = 2 * SK_ScalarPI * i / GrConvexPolyEffect::kMaxEdges; |
| 72 | SkPoint point; |
| 73 | point.fY = SkScalarSinCos(angle, &point.fX); |
| 74 | point.scale(kRadius); |
| 75 | point = center + point; |
| 76 | if (0 == i) { |
| 77 | ngon.moveTo(point); |
| 78 | } else { |
| 79 | ngon.lineTo(point); |
| 80 | } |
| 81 | } |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 82 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 83 | fPaths.addToTail(ngon); |
| 84 | SkMatrix scaleM; |
| 85 | scaleM.setScale(1.1f, 0.4f); |
| 86 | ngon.transform(scaleM); |
| 87 | fPaths.addToTail(ngon); |
skia.committer@gmail.com | f0b0cda | 2014-02-09 03:02:01 +0000 | [diff] [blame] | 88 | |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 89 | // integer edges |
| 90 | fRects.addToTail(SkRect::MakeLTRB(5.f, 1.f, 30.f, 25.f)); |
| 91 | // half-integer edges |
| 92 | fRects.addToTail(SkRect::MakeLTRB(5.5f, 0.5f, 29.5f, 24.5f)); |
| 93 | // vertically/horizontally thin rects that cover pixel centers |
| 94 | fRects.addToTail(SkRect::MakeLTRB(5.25f, 0.5f, 5.75f, 24.5f)); |
| 95 | fRects.addToTail(SkRect::MakeLTRB(5.5f, 0.5f, 29.5f, 0.75f)); |
| 96 | // vertically/horizontally thin rects that don't cover pixel centers |
| 97 | fRects.addToTail(SkRect::MakeLTRB(5.55f, 0.5f, 5.75f, 24.5f)); |
| 98 | fRects.addToTail(SkRect::MakeLTRB(5.5f, .05f, 29.5f, .25f)); |
| 99 | // small in x and y |
| 100 | fRects.addToTail(SkRect::MakeLTRB(5.05f, .55f, 5.45f, .85f)); |
| 101 | // inverted in x and y |
| 102 | fRects.addToTail(SkRect::MakeLTRB(100.f, 50.5f, 5.f, 0.5f)); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 106 | SkBaseDevice* device = canvas->getTopDevice(); |
| 107 | GrRenderTarget* rt = device->accessRenderTarget(); |
| 108 | if (NULL == rt) { |
| 109 | return; |
| 110 | } |
| 111 | GrContext* context = rt->getContext(); |
| 112 | if (NULL == context) { |
| 113 | return; |
| 114 | } |
| 115 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 116 | SkScalar y = 0; |
| 117 | for (SkTLList<SkPath>::Iter iter(fPaths, SkTLList<SkPath>::Iter::kHead_IterStart); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 118 | NULL != iter.get(); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 119 | iter.next()) { |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 120 | const SkPath* path = iter.get(); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 121 | SkScalar x = 0; |
| 122 | |
| 123 | for (int et = 0; et < GrConvexPolyEffect::kEdgeTypeCnt; ++et) { |
| 124 | GrTestTarget tt; |
| 125 | context->getTestTarget(&tt); |
| 126 | if (NULL == tt.target()) { |
| 127 | SkDEBUGFAIL("Couldn't get Gr test target."); |
| 128 | return; |
| 129 | } |
| 130 | GrDrawState* drawState = tt.target()->drawState(); |
| 131 | drawState->setVertexAttribs<kAttribs>(SK_ARRAY_COUNT(kAttribs)); |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 132 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 133 | SkMatrix m; |
| 134 | SkPath p; |
| 135 | m.setTranslate(x, y); |
| 136 | path->transform(m, &p); |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 137 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 138 | GrConvexPolyEffect::EdgeType edgeType = (GrConvexPolyEffect::EdgeType) et; |
| 139 | SkAutoTUnref<GrEffectRef> effect(GrConvexPolyEffect::Create(edgeType, p)); |
| 140 | if (!effect) { |
| 141 | SkDEBUGFAIL("Couldn't create convex poly effect."); |
| 142 | return; |
| 143 | } |
| 144 | drawState->addCoverageEffect(effect, 1); |
| 145 | drawState->setIdentityViewMatrix(); |
| 146 | drawState->setRenderTarget(rt); |
| 147 | drawState->setColor(0xff000000); |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 148 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 149 | SkPoint verts[4]; |
| 150 | SkRect bounds = p.getBounds(); |
| 151 | // Make sure any artifacts around the exterior of path are visible by using overly |
| 152 | // conservative bounding geometry. |
| 153 | bounds.outset(5.f, 5.f); |
| 154 | bounds.toQuad(verts); |
| 155 | |
| 156 | tt.target()->setVertexSourceToArray(verts, 4); |
| 157 | tt.target()->setIndexSourceToBuffer(context->getQuadIndexBuffer()); |
| 158 | tt.target()->drawIndexed(kTriangleFan_GrPrimitiveType, 0, 0, 4, 6); |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 159 | |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 160 | x += SkScalarCeilToScalar(path->getBounds().width() + 10.f); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 161 | } |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 162 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 163 | // Draw AA and non AA paths using normal API for reference. |
| 164 | canvas->save(); |
| 165 | canvas->translate(x, y); |
| 166 | SkPaint paint; |
| 167 | canvas->drawPath(*path, paint); |
| 168 | canvas->translate(path->getBounds().width() + 10.f, 0); |
| 169 | paint.setAntiAlias(true); |
| 170 | canvas->drawPath(*path, paint); |
| 171 | canvas->restore(); |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 172 | |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 173 | y += SkScalarCeilToScalar(path->getBounds().height() + 20.f); |
| 174 | } |
| 175 | |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 176 | for (SkTLList<SkRect>::Iter iter(fRects, SkTLList<SkRect>::Iter::kHead_IterStart); |
| 177 | NULL != iter.get(); |
| 178 | iter.next()) { |
| 179 | |
| 180 | SkScalar x = 0; |
| 181 | |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame^] | 182 | for (int et = 0; et < GrConvexPolyEffect::kEdgeTypeCnt; ++et) { |
| 183 | GrTestTarget tt; |
| 184 | context->getTestTarget(&tt); |
| 185 | if (NULL == tt.target()) { |
| 186 | SkDEBUGFAIL("Couldn't get Gr test target."); |
| 187 | return; |
| 188 | } |
| 189 | SkRect rect = *iter.get(); |
| 190 | rect.offset(x, y); |
| 191 | GrConvexPolyEffect::EdgeType edgeType = (GrConvexPolyEffect::EdgeType) et; |
| 192 | SkAutoTUnref<GrEffectRef> effect(GrConvexPolyEffect::Create(edgeType, rect)); |
| 193 | if (!effect) { |
| 194 | SkDEBUGFAIL("Couldn't create convex poly effect."); |
| 195 | return; |
| 196 | } |
| 197 | |
| 198 | GrDrawState* drawState = tt.target()->drawState(); |
| 199 | drawState->setVertexAttribs<kAttribs>(SK_ARRAY_COUNT(kAttribs)); |
| 200 | drawState->addCoverageEffect(effect, 1); |
| 201 | drawState->setIdentityViewMatrix(); |
| 202 | drawState->setRenderTarget(rt); |
| 203 | drawState->setColor(0xff000000); |
| 204 | |
| 205 | SkPoint verts[4]; |
| 206 | SkRect bounds = rect; |
| 207 | bounds.outset(5.f, 5.f); |
| 208 | bounds.toQuad(verts); |
| 209 | |
| 210 | tt.target()->setVertexSourceToArray(verts, 4); |
| 211 | tt.target()->setIndexSourceToBuffer(context->getQuadIndexBuffer()); |
| 212 | tt.target()->drawIndexed(kTriangleFan_GrPrimitiveType, 0, 0, 4, 6); |
| 213 | |
| 214 | x += SkScalarCeilToScalar(rect.width() + 10.f); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 215 | } |
| 216 | |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame^] | 217 | // Draw rect without and with AA using normal API for reference |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 218 | canvas->save(); |
| 219 | canvas->translate(x, y); |
| 220 | SkPaint paint; |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame^] | 221 | canvas->drawRect(*iter.get(), paint); |
| 222 | x += SkScalarCeilToScalar(iter.get()->width() + 10.f); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 223 | paint.setAntiAlias(true); |
| 224 | canvas->drawRect(*iter.get(), paint); |
| 225 | canvas->restore(); |
| 226 | |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame^] | 227 | y += SkScalarCeilToScalar(iter.get()->height() + 20.f); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 228 | } |
| 229 | } |
| 230 | |
| 231 | private: |
| 232 | SkTLList<SkPath> fPaths; |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 233 | SkTLList<SkRect> fRects; |
skia.committer@gmail.com | f0b0cda | 2014-02-09 03:02:01 +0000 | [diff] [blame] | 234 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 235 | typedef GM INHERITED; |
| 236 | }; |
| 237 | |
| 238 | DEF_GM( return SkNEW(ConvexPolyEffect); ) |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | #endif |