Drawstate on stack

src/gpu/GrOvalRenderer.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrOvalRenderer.h"
 
 #include "gl/builders/GrGLProgramBuilder.h"
@@ skipping 462 matching lines @@
     return DIEllipseEdgeEffect::Create((Mode)(random->nextRangeU(0,2)));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrOvalRenderer::reset() {
     SkSafeSetNull(fRRectIndexBuffer);
     SkSafeSetNull(fStrokeRRectIndexBuffer);
 }
 
-bool GrOvalRenderer::drawOval(GrDrawTarget* target, const GrContext* context, bool useAA,
-                              const SkRect& oval, const SkStrokeRec& stroke)
+bool GrOvalRenderer::drawOval(GrDrawTarget* target,
+                              GrDrawState* drawState,
+                              const GrContext* context,
+                              bool useAA,
+                              const SkRect& oval,
+                              const SkStrokeRec& stroke)
 {
     bool useCoverageAA = useAA &&
-        !target->getDrawState().getRenderTarget()->isMultisampled() &&
-        !target->shouldDisableCoverageAAForBlend();
+        !drawState->getRenderTarget()->isMultisampled() &&
+        drawState->couldApplyCoverage(*target->caps());
 
     if (!useCoverageAA) {
         return false;
     }
 
     const SkMatrix& vm = context->getMatrix();
 
     // we can draw circles
     if (SkScalarNearlyEqual(oval.width(), oval.height())
         && circle_stays_circle(vm)) {
-        this->drawCircle(target, context, useCoverageAA, oval, stroke);
+        this->drawCircle(target, drawState, context, useCoverageAA, oval, stroke);
     // if we have shader derivative support, render as device-independent
     } else if (target->caps()->shaderDerivativeSupport()) {
-        return this->drawDIEllipse(target, context, useCoverageAA, oval, stroke);
+        return this->drawDIEllipse(target, drawState, context, useCoverageAA, oval, stroke);
     // otherwise axis-aligned ellipses only
     } else if (vm.rectStaysRect()) {
-        return this->drawEllipse(target, context, useCoverageAA, oval, stroke);
+        return this->drawEllipse(target, drawState, context, useCoverageAA, oval, stroke);
     } else {
         return false;
     }
 
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 // position + edge
 extern const GrVertexAttrib gCircleVertexAttribs[] = {
     {kVec2f_GrVertexAttribType, 0,               kPosition_GrVertexAttribBinding},
     {kVec4f_GrVertexAttribType, sizeof(SkPoint), kGeometryProcessor_GrVertexAttribBinding}
 };
 
 void GrOvalRenderer::drawCircle(GrDrawTarget* target,
+                                GrDrawState* drawState,
                                 const GrContext* context,
                                 bool useCoverageAA,
                                 const SkRect& circle,
                                 const SkStrokeRec& stroke)
 {
-    GrDrawState* drawState = target->drawState();
-
     const SkMatrix& vm = drawState->getViewMatrix();
     SkPoint center = SkPoint::Make(circle.centerX(), circle.centerY());
     vm.mapPoints(&center, 1);
     SkScalar radius = vm.mapRadius(SkScalarHalf(circle.width()));
     SkScalar strokeWidth = vm.mapRadius(stroke.getWidth());
 
     GrDrawState::AutoViewMatrixRestore avmr;
     if (!avmr.setIdentity(drawState)) {
         return;
     }
 
     drawState->setVertexAttribs<gCircleVertexAttribs>(SK_ARRAY_COUNT(gCircleVertexAttribs),
                                                       sizeof(CircleVertex));
 
-    GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0);
+    GrDrawTarget::AutoReleaseGeometry geo(target, 4, drawState->getVertexStride(),  0);
     if (!geo.succeeded()) {
         SkDebugf("Failed to get space for vertices!\n");
         return;
     }
 
     CircleVertex* verts = reinterpret_cast<CircleVertex*>(geo.vertices());
 
     SkStrokeRec::Style style = stroke.getStyle();
     bool isStrokeOnly = SkStrokeRec::kStroke_Style == style ||
                         SkStrokeRec::kHairline_Style == style;
@@ skipping 46 matching lines @@
     verts[2].fOffset = SkPoint::Make(outerRadius, outerRadius);
     verts[2].fOuterRadius = outerRadius;
     verts[2].fInnerRadius = innerRadius;
 
     verts[3].fPos = SkPoint::Make(bounds.fRight, bounds.fTop);
     verts[3].fOffset = SkPoint::Make(outerRadius, -outerRadius);
     verts[3].fOuterRadius = outerRadius;
     verts[3].fInnerRadius = innerRadius;
 
     target->setIndexSourceToBuffer(context->getGpu()->getQuadIndexBuffer());
-    target->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, 4, 6, &bounds);
+    target->drawIndexedInstances(drawState, kTriangles_GrPrimitiveType, 1, 4, 6, &bounds);
     target->resetIndexSource();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 // position + offset + 1/radii
 extern const GrVertexAttrib gEllipseVertexAttribs[] = {
     {kVec2f_GrVertexAttribType, 0,                 kPosition_GrVertexAttribBinding},
     {kVec2f_GrVertexAttribType, sizeof(SkPoint),   kGeometryProcessor_GrVertexAttribBinding},
     {kVec4f_GrVertexAttribType, 2*sizeof(SkPoint), kGeometryProcessor_GrVertexAttribBinding}
 };
 
 // position + offsets
 extern const GrVertexAttrib gDIEllipseVertexAttribs[] = {
     {kVec2f_GrVertexAttribType, 0,                 kPosition_GrVertexAttribBinding},
     {kVec2f_GrVertexAttribType, sizeof(SkPoint),   kGeometryProcessor_GrVertexAttribBinding},
     {kVec2f_GrVertexAttribType, 2*sizeof(SkPoint), kGeometryProcessor_GrVertexAttribBinding},
 };
 
 bool GrOvalRenderer::drawEllipse(GrDrawTarget* target,
+                                 GrDrawState* drawState,
                                  const GrContext* context,
                                  bool useCoverageAA,
                                  const SkRect& ellipse,
                                  const SkStrokeRec& stroke)
 {
-    GrDrawState* drawState = target->drawState();
 #ifdef SK_DEBUG
     {
         // we should have checked for this previously
         bool isAxisAlignedEllipse = drawState->getViewMatrix().rectStaysRect();
         SkASSERT(useCoverageAA && isAxisAlignedEllipse);
     }
 #endif
 
     // do any matrix crunching before we reset the draw state for device coords
     const SkMatrix& vm = drawState->getViewMatrix();
@@ skipping 49 matching lines @@
     }
 
     GrDrawState::AutoViewMatrixRestore avmr;
     if (!avmr.setIdentity(drawState)) {
         return false;
     }
 
     drawState->setVertexAttribs<gEllipseVertexAttribs>(SK_ARRAY_COUNT(gEllipseVertexAttribs),
                                                        sizeof(EllipseVertex));
 
-    GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0);
+    GrDrawTarget::AutoReleaseGeometry geo(target, 4, drawState->getVertexStride(),  0);
     if (!geo.succeeded()) {
         SkDebugf("Failed to get space for vertices!\n");
         return false;
     }
 
     EllipseVertex* verts = reinterpret_cast<EllipseVertex*>(geo.vertices());
 
     GrGeometryProcessor* gp = EllipseEdgeEffect::Create(isStrokeOnly &&
                                                         innerXRadius > 0 && innerYRadius > 0);
 
@@ skipping 32 matching lines @@
     verts[2].fOffset = SkPoint::Make(xRadius, yRadius);
     verts[2].fOuterRadii = SkPoint::Make(xRadRecip, yRadRecip);
     verts[2].fInnerRadii = SkPoint::Make(xInnerRadRecip, yInnerRadRecip);
 
     verts[3].fPos = SkPoint::Make(bounds.fRight, bounds.fTop);
     verts[3].fOffset = SkPoint::Make(xRadius, -yRadius);
     verts[3].fOuterRadii = SkPoint::Make(xRadRecip, yRadRecip);
     verts[3].fInnerRadii = SkPoint::Make(xInnerRadRecip, yInnerRadRecip);
 
     target->setIndexSourceToBuffer(context->getGpu()->getQuadIndexBuffer());
-    target->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, 4, 6, &bounds);
+    target->drawIndexedInstances(drawState, kTriangles_GrPrimitiveType, 1, 4, 6, &bounds);
     target->resetIndexSource();
 
     return true;
 }
 
 bool GrOvalRenderer::drawDIEllipse(GrDrawTarget* target,
+                                   GrDrawState* drawState,
                                    const GrContext* context,
                                    bool useCoverageAA,
                                    const SkRect& ellipse,
                                    const SkStrokeRec& stroke)
 {
-    GrDrawState* drawState = target->drawState();
     const SkMatrix& vm = drawState->getViewMatrix();
 
     SkPoint center = SkPoint::Make(ellipse.centerX(), ellipse.centerY());
     SkScalar xRadius = SkScalarHalf(ellipse.width());
     SkScalar yRadius = SkScalarHalf(ellipse.height());
 
     SkStrokeRec::Style style = stroke.getStyle();
     DIEllipseEdgeEffect::Mode mode = (SkStrokeRec::kStroke_Style == style) ?
                                     DIEllipseEdgeEffect::kStroke :
                                     (SkStrokeRec::kHairline_Style == style) ?
@@ skipping 34 matching lines @@
     if (DIEllipseEdgeEffect::kStroke == mode) {
         mode = (innerXRadius > 0 && innerYRadius > 0) ? DIEllipseEdgeEffect::kStroke :
                                                         DIEllipseEdgeEffect::kFill;
     }
     SkScalar innerRatioX = SkScalarDiv(xRadius, innerXRadius);
     SkScalar innerRatioY = SkScalarDiv(yRadius, innerYRadius);
 
     drawState->setVertexAttribs<gDIEllipseVertexAttribs>(SK_ARRAY_COUNT(gDIEllipseVertexAttribs),
                                                          sizeof(DIEllipseVertex));
 
-    GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0);
+    GrDrawTarget::AutoReleaseGeometry geo(target, 4, drawState->getVertexStride(),  0);
     if (!geo.succeeded()) {
         SkDebugf("Failed to get space for vertices!\n");
         return false;
     }
 
     DIEllipseVertex* verts = reinterpret_cast<DIEllipseVertex*>(geo.vertices());
 
     GrGeometryProcessor* gp = DIEllipseEdgeEffect::Create(mode);
 
     drawState->setGeometryProcessor(gp)->unref();
@@ skipping 26 matching lines @@
 
     verts[2].fPos = SkPoint::Make(bounds.fRight, bounds.fBottom);
     verts[2].fOuterOffset = SkPoint::Make(1.0f + offsetDx, 1.0f + offsetDy);
     verts[2].fInnerOffset = SkPoint::Make(innerRatioX + offsetDx, innerRatioY + offsetDy);
 
     verts[3].fPos = SkPoint::Make(bounds.fRight, bounds.fTop);
     verts[3].fOuterOffset = SkPoint::Make(1.0f + offsetDx, -1.0f - offsetDy);
     verts[3].fInnerOffset = SkPoint::Make(innerRatioX + offsetDx, -innerRatioY - offsetDy);
 
     target->setIndexSourceToBuffer(context->getGpu()->getQuadIndexBuffer());
-    target->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, 4, 6, &bounds);
+    target->drawIndexedInstances(drawState, kTriangles_GrPrimitiveType, 1, 4, 6, &bounds);
     target->resetIndexSource();
 
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static const uint16_t gRRectIndices[] = {
     // corners
     0, 1, 5, 0, 5, 4,
@@ skipping 30 matching lines @@
         if (NULL == fRRectIndexBuffer) {
             fRRectIndexBuffer = gpu->createInstancedIndexBuffer(gRRectIndices,
                                                                 kIndicesPerRRect,
                                                                 kNumRRectsInIndexBuffer,
                                                                 kVertsPerRRect);
         }
         return fRRectIndexBuffer;
     }
 }
 
-bool GrOvalRenderer::drawDRRect(GrDrawTarget* target, GrContext* context, bool useAA,
-                                const SkRRect& origOuter, const SkRRect& origInner) {
+bool GrOvalRenderer::drawDRRect(GrDrawTarget* target,
+                                GrDrawState* drawState,
+                                GrContext* context,
+                                bool useAA,
+                                const SkRRect& origOuter,
+                                const SkRRect& origInner) {
     bool applyAA = useAA &&
-                   !target->getDrawState().getRenderTarget()->isMultisampled() &&
-                   !target->shouldDisableCoverageAAForBlend();
+                   !drawState->getRenderTarget()->isMultisampled() &&
+                   drawState->couldApplyCoverage(*target->caps());
     GrDrawState::AutoRestoreEffects are;
     if (!origInner.isEmpty()) {
         SkTCopyOnFirstWrite<SkRRect> inner(origInner);
         if (!context->getMatrix().isIdentity()) {
             if (!origInner.transform(context->getMatrix(), inner.writable())) {
                 return false;
             }
         }
         GrPrimitiveEdgeType edgeType = applyAA ?
                 kInverseFillAA_GrProcessorEdgeType :
                 kInverseFillBW_GrProcessorEdgeType;
         GrFragmentProcessor* fp = GrRRectEffect::Create(edgeType, *inner);
         if (NULL == fp) {
             return false;
         }
-        are.set(target->drawState());
-        target->drawState()->addCoverageProcessor(fp)->unref();
+        are.set(drawState);
+        drawState->addCoverageProcessor(fp)->unref();
     }
 
     SkStrokeRec fillRec(SkStrokeRec::kFill_InitStyle);
-    if (this->drawRRect(target, context, useAA, origOuter, fillRec)) {
+    if (this->drawRRect(target, drawState, context, useAA, origOuter, fillRec)) {
         return true;
     }
 
     SkASSERT(!origOuter.isEmpty());
     SkTCopyOnFirstWrite<SkRRect> outer(origOuter);
     if (!context->getMatrix().isIdentity()) {
         if (!origOuter.transform(context->getMatrix(), outer.writable())) {
             return false;
         }
     }
     GrPrimitiveEdgeType edgeType = applyAA ? kFillAA_GrProcessorEdgeType :
                                           kFillBW_GrProcessorEdgeType;
     GrFragmentProcessor* effect = GrRRectEffect::Create(edgeType, *outer);
     if (NULL == effect) {
         return false;
     }
     if (!are.isSet()) {
-        are.set(target->drawState());
+        are.set(drawState);
     }
     GrDrawState::AutoViewMatrixRestore avmr;
-    if (!avmr.setIdentity(target->drawState())) {
+    if (!avmr.setIdentity(drawState)) {
         return false;
     }
-    target->drawState()->addCoverageProcessor(effect)->unref();
+    drawState->addCoverageProcessor(effect)->unref();
     SkRect bounds = outer->getBounds();
     if (applyAA) {
         bounds.outset(SK_ScalarHalf, SK_ScalarHalf);
     }
-    target->drawRect(bounds, NULL, NULL);
+    target->drawRect(drawState, bounds, NULL, NULL);
     return true;
 }
 
-bool GrOvalRenderer::drawRRect(GrDrawTarget* target, GrContext* context, bool useAA,
-                               const SkRRect& rrect, const SkStrokeRec& stroke) {
+bool GrOvalRenderer::drawRRect(GrDrawTarget* target,
+                               GrDrawState* drawState,
+                               GrContext* context,
+                               bool useAA,
+                               const SkRRect& rrect,
+                               const SkStrokeRec& stroke) {
     if (rrect.isOval()) {
-        return this->drawOval(target, context, useAA, rrect.getBounds(), stroke);
+        return this->drawOval(target, drawState, context, useAA, rrect.getBounds(), stroke);
     }
 
     bool useCoverageAA = useAA &&
-        !target->getDrawState().getRenderTarget()->isMultisampled() &&
-        !target->shouldDisableCoverageAAForBlend();
+        !drawState->getRenderTarget()->isMultisampled() &&
+        drawState->couldApplyCoverage(*target->caps());
 
     // only anti-aliased rrects for now
     if (!useCoverageAA) {
         return false;
     }
 
     const SkMatrix& vm = context->getMatrix();
 
     if (!vm.rectStaysRect() || !rrect.isSimple()) {
         return false;
@@ skipping 39 matching lines @@
     // The way the effect interpolates the offset-to-ellipse/circle-center attribute only works on
     // the interior of the rrect if the radii are >= 0.5. Otherwise, the inner rect of the nine-
     // patch will have fractional coverage. This only matters when the interior is actually filled.
     // We could consider falling back to rect rendering here, since a tiny radius is
     // indistinguishable from a square corner.
     if (!isStrokeOnly && (SK_ScalarHalf > xRadius || SK_ScalarHalf > yRadius)) {
         return false;
     }
 
     // reset to device coordinates
-    GrDrawState* drawState = target->drawState();
     GrDrawState::AutoViewMatrixRestore avmr;
     if (!avmr.setIdentity(drawState)) {
         return false;
     }
 
     GrIndexBuffer* indexBuffer = this->rRectIndexBuffer(isStrokeOnly, context->getGpu());
     if (NULL == indexBuffer) {
         SkDebugf("Failed to create index buffer!\n");
         return false;
     }
 
     // if the corners are circles, use the circle renderer
     if ((!hasStroke || scaledStroke.fX == scaledStroke.fY) && xRadius == yRadius) {
         drawState->setVertexAttribs<gCircleVertexAttribs>(SK_ARRAY_COUNT(gCircleVertexAttribs),
                                                           sizeof(CircleVertex));
 
-        GrDrawTarget::AutoReleaseGeometry geo(target, 16, 0);
+        GrDrawTarget::AutoReleaseGeometry geo(target, 16, drawState->getVertexStride(),  0);
         if (!geo.succeeded()) {
             SkDebugf("Failed to get space for vertices!\n");
             return false;
         }
         CircleVertex* verts = reinterpret_cast<CircleVertex*>(geo.vertices());
 
         SkScalar innerRadius = 0.0f;
         SkScalar outerRadius = xRadius;
         SkScalar halfWidth = 0;
         if (hasStroke) {
@@ skipping 60 matching lines @@
             verts->fOffset = SkPoint::Make(outerRadius, yOuterRadii[i]);
             verts->fOuterRadius = outerRadius;
             verts->fInnerRadius = innerRadius;
             verts++;
         }
 
         // drop out the middle quad if we're stroked
         int indexCnt = isStrokeOnly ? SK_ARRAY_COUNT(gRRectIndices) - 6 :
                                       SK_ARRAY_COUNT(gRRectIndices);
         target->setIndexSourceToBuffer(indexBuffer);
-        target->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, 16, indexCnt, &bounds);
+        target->drawIndexedInstances(drawState, kTriangles_GrPrimitiveType, 1, 16, indexCnt,
+                                     &bounds);
 
     // otherwise we use the ellipse renderer
     } else {
         drawState->setVertexAttribs<gEllipseVertexAttribs>(SK_ARRAY_COUNT(gEllipseVertexAttribs),
                                                            sizeof(EllipseVertex));
 
         SkScalar innerXRadius = 0.0f;
         SkScalar innerYRadius = 0.0f;
         if (hasStroke) {
             if (SkScalarNearlyZero(scaledStroke.length())) {
@@ skipping 20 matching lines @@
                 innerYRadius = yRadius - scaledStroke.fY;
             }
 
             xRadius += scaledStroke.fX;
             yRadius += scaledStroke.fY;
             bounds.outset(scaledStroke.fX, scaledStroke.fY);
         }
 
         isStrokeOnly = (isStrokeOnly && innerXRadius >= 0 && innerYRadius >= 0);
 
-        GrDrawTarget::AutoReleaseGeometry geo(target, 16, 0);
+        GrDrawTarget::AutoReleaseGeometry geo(target, 16, drawState->getVertexStride(),  0);
         if (!geo.succeeded()) {
             SkDebugf("Failed to get space for vertices!\n");
             return false;
         }
         EllipseVertex* verts = reinterpret_cast<EllipseVertex*>(geo.vertices());
 
         GrGeometryProcessor* effect = EllipseEdgeEffect::Create(isStrokeOnly);
         drawState->setGeometryProcessor(effect)->unref();
 
         // Compute the reciprocals of the radii here to save time in the shader
@@ skipping 45 matching lines @@
             verts->fOffset = SkPoint::Make(xOuterRadius, yOuterOffsets[i]);
             verts->fOuterRadii = SkPoint::Make(xRadRecip, yRadRecip);
             verts->fInnerRadii = SkPoint::Make(xInnerRadRecip, yInnerRadRecip);
             verts++;
         }
 
         // drop out the middle quad if we're stroked
         int indexCnt = isStrokeOnly ? SK_ARRAY_COUNT(gRRectIndices) - 6 :
                                       SK_ARRAY_COUNT(gRRectIndices);
         target->setIndexSourceToBuffer(indexBuffer);
-        target->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, 16, indexCnt, &bounds);
+        target->drawIndexedInstances(drawState, kTriangles_GrPrimitiveType, 1, 16, indexCnt,
+                                     &bounds);
     }
 
     target->resetIndexSource();
     return true;
 }