1 files changed, 225 insertions, 0 deletions
diff --git a/src/gpu/ops/GrNonAAFillRectOp.cpp b/src/gpu/ops/GrNonAAFillRectOp.cpp
new file mode 100644
index 0000000000..de000e2ce7
--- /dev/null
+++ b/src/gpu/ops/GrNonAAFillRectOp.cpp
@@ -0,0 +1,225 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrNonAAFillRectOp.h"
+
+#include "GrColor.h"
+#include "GrDefaultGeoProcFactory.h"
+#include "GrMeshDrawOp.h"
+#include "GrOpFlushState.h"
+#include "GrPrimitiveProcessor.h"
+#include "GrQuad.h"
+#include "GrResourceProvider.h"
+
+#include "SkMatrixPriv.h"
+
+static const int kVertsPerInstance = 4;
+static const int kIndicesPerInstance = 6;
+
+/** We always use per-vertex colors so that rects can be batched across color changes. Sometimes
+    we  have explicit local coords and sometimes not. We *could* always provide explicit local
+    coords and just duplicate the positions when the caller hasn't provided a local coord rect,
+    but we haven't seen a use case which frequently switches between local rect and no local
+    rect draws.
+
+    The vertex attrib order is always pos, color, [local coords].
+ */
+static sk_sp<GrGeometryProcessor> make_gp(bool readsCoverage) {
+    using namespace GrDefaultGeoProcFactory;
+    Color color(Color::kAttribute_Type);
+    Coverage coverage(readsCoverage ? Coverage::kSolid_Type : Coverage::kNone_Type);
+
+    LocalCoords localCoords(LocalCoords::kHasExplicit_Type);
+    return GrDefaultGeoProcFactory::Make(color, coverage, localCoords, SkMatrix::I());
+}
+
+static void tesselate(intptr_t vertices,
+                      size_t vertexStride,
+                      GrColor color,
+                      const SkMatrix* viewMatrix,
+                      const SkRect& rect,
+                      const GrQuad* localQuad) {
+    SkPoint* positions = reinterpret_cast<SkPoint*>(vertices);
+
+    positions->setRectFan(rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, vertexStride);
+
+    if (viewMatrix) {
+        SkMatrixPriv::MapPointsWithStride(*viewMatrix, positions, vertexStride, kVertsPerInstance);
+    }
+
+    // Setup local coords
+    // TODO we should only do this if local coords are being read
+    if (localQuad) {
+        static const int kLocalOffset = sizeof(SkPoint) + sizeof(GrColor);
+        for (int i = 0; i < kVertsPerInstance; i++) {
+            SkPoint* coords =
+                    reinterpret_cast<SkPoint*>(vertices + kLocalOffset + i * vertexStride);
+            *coords = localQuad->point(i);
+        }
+    }
+
+    static const int kColorOffset = sizeof(SkPoint);
+    GrColor* vertColor = reinterpret_cast<GrColor*>(vertices + kColorOffset);
+    for (int j = 0; j < 4; ++j) {
+        *vertColor = color;
+        vertColor = (GrColor*)((intptr_t)vertColor + vertexStride);
+    }
+}
+
+class NonAAFillRectOp final : public GrMeshDrawOp {
+public:
+    DEFINE_OP_CLASS_ID
+
+    NonAAFillRectOp(GrColor color, const SkMatrix& viewMatrix, const SkRect& rect,
+                    const SkRect* localRect, const SkMatrix* localMatrix)
+            : INHERITED(ClassID()) {
+        SkASSERT(!viewMatrix.hasPerspective() && (!localMatrix || !localMatrix->hasPerspective()));
+        RectInfo& info = fRects.push_back();
+        info.fColor = color;
+        info.fViewMatrix = viewMatrix;
+        info.fRect = rect;
+        if (localRect && localMatrix) {
+            info.fLocalQuad.setFromMappedRect(*localRect, *localMatrix);
+        } else if (localRect) {
+            info.fLocalQuad.set(*localRect);
+        } else if (localMatrix) {
+            info.fLocalQuad.setFromMappedRect(rect, *localMatrix);
+        } else {
+            info.fLocalQuad.set(rect);
+        }
+        this->setTransformedBounds(fRects[0].fRect, viewMatrix, HasAABloat::kNo, IsZeroArea::kNo);
+    }
+
+    const char* name() const override { return "NonAAFillRectOp"; }
+
+    SkString dumpInfo() const override {
+        SkString str;
+        str.appendf("# batched: %d\n", fRects.count());
+        for (int i = 0; i < fRects.count(); ++i) {
+            const RectInfo& info = fRects[i];
+            str.appendf("%d: Color: 0x%08x, Rect [L: %.2f, T: %.2f, R: %.2f, B: %.2f]\n", i,
+                        info.fColor, info.fRect.fLeft, info.fRect.fTop, info.fRect.fRight,
+                        info.fRect.fBottom);
+        }
+        str.append(DumpPipelineInfo(*this->pipeline()));
+        str.append(INHERITED::dumpInfo());
+        return str;
+    }
+
+    void computePipelineOptimizations(GrInitInvariantOutput* color,
+                                      GrInitInvariantOutput* coverage,
+                                      GrBatchToXPOverrides* overrides) const override {
+        // When this is called there is only one rect.
+        color->setKnownFourComponents(fRects[0].fColor);
+        coverage->setKnownSingleComponent(0xff);
+    }
+
+    void initBatchTracker(const GrXPOverridesForBatch& overrides) override {
+        overrides.getOverrideColorIfSet(&fRects[0].fColor);
+        fOverrides = overrides;
+    }
+
+private:
+    NonAAFillRectOp() : INHERITED(ClassID()) {}
+
+    void onPrepareDraws(Target* target) const override {
+        sk_sp<GrGeometryProcessor> gp = make_gp(fOverrides.readsCoverage());
+        if (!gp) {
+            SkDebugf("Couldn't create GrGeometryProcessor\n");
+            return;
+        }
+        SkASSERT(gp->getVertexStride() ==
+                 sizeof(GrDefaultGeoProcFactory::PositionColorLocalCoordAttr));
+
+        size_t vertexStride = gp->getVertexStride();
+        int instanceCount = fRects.count();
+
+        sk_sp<const GrBuffer> indexBuffer(target->resourceProvider()->refQuadIndexBuffer());
+        InstancedHelper helper;
+        void* vertices =
+                helper.init(target, kTriangles_GrPrimitiveType, vertexStride, indexBuffer.get(),
+                            kVertsPerInstance, kIndicesPerInstance, instanceCount);
+        if (!vertices || !indexBuffer) {
+            SkDebugf("Could not allocate vertices\n");
+            return;
+        }
+
+        for (int i = 0; i < instanceCount; i++) {
+            intptr_t verts =
+                    reinterpret_cast<intptr_t>(vertices) + i * kVertsPerInstance * vertexStride;
+            tesselate(verts, vertexStride, fRects[i].fColor, &fRects[i].fViewMatrix,
+                      fRects[i].fRect, &fRects[i].fLocalQuad);
+        }
+        helper.recordDraw(target, gp.get());
+    }
+
+    bool onCombineIfPossible(GrOp* t, const GrCaps& caps) override {
+        NonAAFillRectOp* that = t->cast<NonAAFillRectOp>();
+        if (!GrPipeline::CanCombine(*this->pipeline(), this->bounds(), *that->pipeline(),
+                                    that->bounds(), caps)) {
+            return false;
+        }
+
+        // In the event of two ops, one who can tweak, one who cannot, we just fall back to not
+        // tweaking.
+        if (fOverrides.canTweakAlphaForCoverage() && !that->fOverrides.canTweakAlphaForCoverage()) {
+            fOverrides = that->fOverrides;
+        }
+
+        fRects.push_back_n(that->fRects.count(), that->fRects.begin());
+        this->joinBounds(*that);
+        return true;
+    }
+
+    struct RectInfo {
+        GrColor fColor;
+        SkMatrix fViewMatrix;
+        SkRect fRect;
+        GrQuad fLocalQuad;
+    };
+
+    GrXPOverridesForBatch fOverrides;
+    SkSTArray<1, RectInfo, true> fRects;
+
+    typedef GrMeshDrawOp INHERITED;
+};
+
+namespace GrNonAAFillRectOp {
+
+sk_sp<GrDrawOp> Make(GrColor color,
+                     const SkMatrix& viewMatrix,
+                     const SkRect& rect,
+                     const SkRect* localRect,
+                     const SkMatrix* localMatrix) {
+    return sk_sp<GrDrawOp>(new NonAAFillRectOp(color, viewMatrix, rect, localRect, localMatrix));
+}
+};
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifdef GR_TEST_UTILS
+
+#include "GrBatchTest.h"
+
+DRAW_BATCH_TEST_DEFINE(NonAAFillRectOp) {
+    GrColor color = GrRandomColor(random);
+    SkRect rect = GrTest::TestRect(random);
+    SkRect localRect = GrTest::TestRect(random);
+    SkMatrix viewMatrix = GrTest::TestMatrixInvertible(random);
+    SkMatrix localMatrix = GrTest::TestMatrix(random);
+
+    bool hasLocalRect = random->nextBool();
+    bool hasLocalMatrix = random->nextBool();
+    return GrNonAAFillRectOp::Make(color,
+                                   viewMatrix,
+                                   rect,
+                                   hasLocalRect ? &localRect : nullptr,
+                                   hasLocalMatrix ? &localMatrix : nullptr)
+            .release();
+}
+
+#endif