Pass clip to context

src/gpu/GrContext.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrContext.h"
 
@@ skipping 68 matching lines @@
     if (context->init(backend, backendContext)) {
         return context;
     } else {
         context->unref();
         return NULL;
     }
 }
 
 GrContext::GrContext(const Options& opts) : fOptions(opts) {
     fGpu = NULL;
-    fClip = NULL;
     fPathRendererChain = NULL;
     fSoftwarePathRenderer = NULL;
     fResourceCache = NULL;
     fFontCache = NULL;
     fDrawBuffer = NULL;
     fDrawBufferVBAllocPool = NULL;
     fDrawBufferIBAllocPool = NULL;
     fFlushToReduceCacheSize = false;
     fAARectRenderer = NULL;
     fOvalRenderer = NULL;
@@ skipping 256 matching lines @@
 
 void GrContext::clear(const SkIRect* rect,
                       const GrColor color,
                       bool canIgnoreRect,
                       GrRenderTarget* renderTarget) {
     ASSERT_OWNED_RESOURCE(renderTarget);
     SkASSERT(renderTarget);
 
     AutoCheckFlush acf(this);
     GR_CREATE_TRACE_MARKER_CONTEXT("GrContext::clear", this);
-    GrDrawTarget* target = this->prepareToDraw(NULL, renderTarget, NULL, &acf);
+    GrDrawTarget* target = this->prepareToDraw();
     if (NULL == target) {
         return;
     }
     target->clear(rect, color, canIgnoreRect, renderTarget);
 }
 
 void GrContext::drawPaint(GrRenderTarget* rt,
+                          const GrClip& clip,
                           const GrPaint& origPaint,
                           const SkMatrix& viewMatrix) {
     // set rect to be big enough to fill the space, but not super-huge, so we
     // don't overflow fixed-point implementations
     SkRect r;
     r.setLTRB(0, 0,
               SkIntToScalar(rt->width()),
               SkIntToScalar(rt->height()));
     SkTCopyOnFirstWrite<GrPaint> paint(origPaint);
 
     // by definition this fills the entire clip, no need for AA
     if (paint->isAntiAlias()) {
         paint.writable()->setAntiAlias(false);
     }
 
     bool isPerspective = viewMatrix.hasPerspective();
 
     // We attempt to map r by the inverse matrix and draw that. mapRect will
     // map the four corners and bound them with a new rect. This will not
     // produce a correct result for some perspective matrices.
     if (!isPerspective) {
         SkMatrix inverse;
         if (!viewMatrix.invert(&inverse)) {
             SkDebugf("Could not invert matrix\n");
             return;
         }
         inverse.mapRect(&r);
-        this->drawRect(rt, *paint, viewMatrix, r);
+        this->drawRect(rt, clip, *paint, viewMatrix, r);
     } else {
         SkMatrix localMatrix;
         if (!viewMatrix.invert(&localMatrix)) {
             SkDebugf("Could not invert matrix\n");
             return;
         }
 
         AutoCheckFlush acf(this);
         GrPipelineBuilder pipelineBuilder;
-        GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, paint, &acf);
+        GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, paint, &acf);
         if (NULL == target) {
             return;
         }
 
         GR_CREATE_TRACE_MARKER("GrContext::drawPaintWithPerspective", target);
         target->drawRect(&pipelineBuilder,
                          paint->getColor(),
                          SkMatrix::I(),
                          r,
                          NULL,
@@ skipping 73 matching lines @@
 
     return true;
 }
 
 static inline bool rect_contains_inclusive(const SkRect& rect, const SkPoint& point) {
     return point.fX >= rect.fLeft && point.fX <= rect.fRight &&
            point.fY >= rect.fTop && point.fY <= rect.fBottom;
 }
 
 void GrContext::drawRect(GrRenderTarget* rt,
+                         const GrClip& clip,
                          const GrPaint& paint,
                          const SkMatrix& viewMatrix,
                          const SkRect& rect,
                          const GrStrokeInfo* strokeInfo) {
     if (strokeInfo && strokeInfo->isDashed()) {
         SkPath path;
         path.addRect(rect);
-        this->drawPath(rt, paint, viewMatrix, path, *strokeInfo);
+        this->drawPath(rt, clip, paint, viewMatrix, path, *strokeInfo);
         return;
     }
 
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
-    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, &paint, &acf);
+    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
     if (NULL == target) {
         return;
     }
 
     GR_CREATE_TRACE_MARKER("GrContext::drawRect", target);
     SkScalar width = NULL == strokeInfo ? -1 : strokeInfo->getStrokeRec().getWidth();
 
     // Check if this is a full RT draw and can be replaced with a clear. We don't bother checking
     // cases where the RT is fully inside a stroke.
     if (width < 0) {
         SkRect rtRect;
         pipelineBuilder.getRenderTarget()->getBoundsRect(&rtRect);
         SkRect clipSpaceRTRect = rtRect;
-        bool checkClip = fClip && GrClip::kWideOpen_ClipType != fClip->clipType();
+        bool checkClip = GrClip::kWideOpen_ClipType != clip.clipType();
         if (checkClip) {
-            clipSpaceRTRect.offset(SkIntToScalar(this->getClip()->origin().fX),
-                                   SkIntToScalar(this->getClip()->origin().fY));
+            clipSpaceRTRect.offset(SkIntToScalar(clip.origin().fX),
+                                   SkIntToScalar(clip.origin().fY));
         }
         // Does the clip contain the entire RT?
-        if (!checkClip || fClip->clipStack()->quickContains(clipSpaceRTRect)) {
+        if (!checkClip || clip.quickContains(clipSpaceRTRect)) {
             SkMatrix invM;
             if (!viewMatrix.invert(&invM)) {
                 return;
             }
             // Does the rect bound the RT?
             SkPoint srcSpaceRTQuad[4];
             invM.mapRectToQuad(srcSpaceRTQuad, rtRect);
             if (rect_contains_inclusive(rect, srcSpaceRTQuad[0]) &&
                 rect_contains_inclusive(rect, srcSpaceRTQuad[1]) &&
                 rect_contains_inclusive(rect, srcSpaceRTQuad[2]) &&
@@ skipping 78 matching lines @@
         }
 
         target->drawNonIndexed(&pipelineBuilder, gp, primType, 0, vertCount);
     } else {
         // filled BW rect
         target->drawSimpleRect(&pipelineBuilder, color, viewMatrix, rect);
     }
 }
 
 void GrContext::drawNonAARectToRect(GrRenderTarget* rt,
+                                    const GrClip& clip,
                                     const GrPaint& paint,
                                     const SkMatrix& viewMatrix,
                                     const SkRect& rectToDraw,
                                     const SkRect& localRect,
                                     const SkMatrix* localMatrix) {
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
-    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, &paint, &acf);
+    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
     if (NULL == target) {
         return;
     }
 
     GR_CREATE_TRACE_MARKER("GrContext::drawRectToRect", target);
 
     target->drawRect(&pipelineBuilder,
                      paint.getColor(),
                      viewMatrix,
                      rectToDraw,
@@ skipping 19 matching lines @@
         *texOffset = sizeof(SkPoint);
         flags |= GrDefaultGeoProcFactory::kLocalCoord_GPType;
     } else if (colors) {
         *colorOffset = sizeof(SkPoint);
         flags |= GrDefaultGeoProcFactory::kColor_GPType;
     }
     return GrDefaultGeoProcFactory::Create(flags, color, viewMatrix, SkMatrix::I());
 }
 
 void GrContext::drawVertices(GrRenderTarget* rt,
+                             const GrClip& clip,
                              const GrPaint& paint,
                              const SkMatrix& viewMatrix,
                              GrPrimitiveType primitiveType,
                              int vertexCount,
                              const SkPoint positions[],
                              const SkPoint texCoords[],
                              const GrColor colors[],
                              const uint16_t indices[],
                              int indexCount) {
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
     GrDrawTarget::AutoReleaseGeometry geo; // must be inside AutoCheckFlush scope
 
-    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, &paint, &acf);
+    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
     if (NULL == target) {
         return;
     }
 
     GR_CREATE_TRACE_MARKER("GrContext::drawVertices", target);
 
     int colorOffset = -1, texOffset = -1;
     SkAutoTUnref<const GrGeometryProcessor> gp(
             set_vertex_attributes(texCoords, colors, &colorOffset, &texOffset,
                                   paint.getColor(), viewMatrix));
@@ skipping 28 matching lines @@
         }
         target->drawIndexed(&pipelineBuilder, gp, primitiveType, 0, 0, vertexCount, indexCount);
     } else {
         target->drawNonIndexed(&pipelineBuilder, gp, primitiveType, 0, vertexCount);
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrContext::drawRRect(GrRenderTarget*rt,
+                          const GrClip& clip,
                           const GrPaint& paint,
                           const SkMatrix& viewMatrix,
                           const SkRRect& rrect,
                           const GrStrokeInfo& strokeInfo) {
     if (rrect.isEmpty()) {
        return;
     }
 
     if (strokeInfo.isDashed()) {
         SkPath path;
         path.addRRect(rrect);
-        this->drawPath(rt, paint, viewMatrix, path, strokeInfo);
+        this->drawPath(rt, clip, paint, viewMatrix, path, strokeInfo);
         return;
     }
 
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
-    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, &paint, &acf);
+    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
     if (NULL == target) {
         return;
     }
 
     GR_CREATE_TRACE_MARKER("GrContext::drawRRect", target);
 
     const SkStrokeRec& strokeRec = strokeInfo.getStrokeRec();
 
     GrColor color = paint.getColor();
     if (!fOvalRenderer->drawRRect(target,
                                   &pipelineBuilder,
                                   color,
                                   viewMatrix,
                                   paint.isAntiAlias(),
                                   rrect,
                                   strokeRec)) {
         SkPath path;
         path.addRRect(rrect);
         this->internalDrawPath(target, &pipelineBuilder, viewMatrix, color, paint.isAntiAlias(),
                                path, strokeInfo);
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrContext::drawDRRect(GrRenderTarget* rt,
+                           const GrClip& clip,
                            const GrPaint& paint,
                            const SkMatrix& viewMatrix,
                            const SkRRect& outer,
                            const SkRRect& inner) {
     if (outer.isEmpty()) {
        return;
     }
 
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
-    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, &paint, &acf);
+    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
 
     GR_CREATE_TRACE_MARKER("GrContext::drawDRRect", target);
 
     GrColor color = paint.getColor();
     if (!fOvalRenderer->drawDRRect(target,
                                    &pipelineBuilder,
                                    color,
                                    viewMatrix,
                                    paint.isAntiAlias(),
                                    outer,
                                    inner)) {
         SkPath path;
         path.addRRect(inner);
         path.addRRect(outer);
         path.setFillType(SkPath::kEvenOdd_FillType);
 
         GrStrokeInfo fillRec(SkStrokeRec::kFill_InitStyle);
         this->internalDrawPath(target, &pipelineBuilder, viewMatrix, color, paint.isAntiAlias(),
                                path, fillRec);
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-void GrContext::drawOval(GrRenderTarget*rt,
+void GrContext::drawOval(GrRenderTarget* rt,
+                         const GrClip& clip,
                          const GrPaint& paint,
                          const SkMatrix& viewMatrix,
                          const SkRect& oval,
                          const GrStrokeInfo& strokeInfo) {
     if (oval.isEmpty()) {
        return;
     }
 
     if (strokeInfo.isDashed()) {
         SkPath path;
         path.addOval(oval);
-        this->drawPath(rt, paint, viewMatrix, path, strokeInfo);
+        this->drawPath(rt, clip, paint, viewMatrix, path, strokeInfo);
         return;
     }
 
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
-    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, &paint, &acf);
+    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
     if (NULL == target) {
         return;
     }
 
     GR_CREATE_TRACE_MARKER("GrContext::drawOval", target);
 
     const SkStrokeRec& strokeRec = strokeInfo.getStrokeRec();
 
     GrColor color = paint.getColor();
     if (!fOvalRenderer->drawOval(target,
@@ skipping 57 matching lines @@
         }
         if (!SkScalarNearlyEqual(margin, temp)) {
             allEq = false;
         }
     }
 
     return allEq || allGoE1;
 }
 
 void GrContext::drawPath(GrRenderTarget* rt,
+                         const GrClip& clip,
                          const GrPaint& paint,
                          const SkMatrix& viewMatrix,
                          const SkPath& path,
                          const GrStrokeInfo& strokeInfo) {
 
     if (path.isEmpty()) {
        if (path.isInverseFillType()) {
-           this->drawPaint(rt, paint, viewMatrix);
+           this->drawPaint(rt, clip, paint, viewMatrix);
        }
        return;
     }
 
     GrColor color = paint.getColor();
     if (strokeInfo.isDashed()) {
         SkPoint pts[2];
         if (path.isLine(pts)) {
             AutoCheckFlush acf(this);
             GrPipelineBuilder pipelineBuilder;
-            GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, &paint, &acf);
+            GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
             if (NULL == target) {
                 return;
             }
 
             if (GrDashingEffect::DrawDashLine(fGpu, target, &pipelineBuilder, color, viewMatrix,
                                               pts, paint, strokeInfo)) {
                 return;
             }
         }
 
         // Filter dashed path into new path with the dashing applied
         const SkPathEffect::DashInfo& info = strokeInfo.getDashInfo();
         SkTLazy<SkPath> effectPath;
         GrStrokeInfo newStrokeInfo(strokeInfo, false);
         SkStrokeRec* stroke = newStrokeInfo.getStrokeRecPtr();
         if (SkDashPath::FilterDashPath(effectPath.init(), path, stroke, NULL, info)) {
-            this->drawPath(rt, paint, viewMatrix, *effectPath.get(), newStrokeInfo);
+            this->drawPath(rt, clip, paint, viewMatrix, *effectPath.get(), newStrokeInfo);
             return;
         }
 
-        this->drawPath(rt, paint, viewMatrix, path, newStrokeInfo);
+        this->drawPath(rt, clip, paint, viewMatrix, path, newStrokeInfo);
         return;
     }
 
     // Note that internalDrawPath may sw-rasterize the path into a scratch texture.
     // Scratch textures can be recycled after they are returned to the texture
     // cache. This presents a potential hazard for buffered drawing. However,
     // the writePixels that uploads to the scratch will perform a flush so we're
     // OK.
     AutoCheckFlush acf(this);
     GrPipelineBuilder pipelineBuilder;
-    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, &paint, &acf);
+    GrDrawTarget* target = this->prepareToDraw(&pipelineBuilder, rt, clip, &paint, &acf);
     if (NULL == target) {
         return;
     }
 
     GR_CREATE_TRACE_MARKER1("GrContext::drawPath", target, "Is Convex", path.isConvex());
 
     const SkStrokeRec& strokeRec = strokeInfo.getStrokeRec();
 
     bool useCoverageAA = paint.isAntiAlias() &&
         !pipelineBuilder.getRenderTarget()->isMultisampled();
@@ skipping 208 matching lines @@
     }
 
     SkMatrix matrix;
     matrix.setTranslate(SkIntToScalar(left), SkIntToScalar(top));
 
     // This function can be called in the midst of drawing another object (e.g., when uploading a
     // SW-rasterized clip while issuing a draw). So we push the current geometry state before
     // drawing a rect to the render target.
     // The bracket ensures we pop the stack if we wind up flushing below.
     {
-        GrDrawTarget* drawTarget = this->prepareToDraw(NULL, NULL, NULL, NULL);
+        GrDrawTarget* drawTarget = this->prepareToDraw();
+        if (!drawTarget) {
+            return false;
+        }
         GrDrawTarget::AutoGeometryPush agp(drawTarget);
 
         GrPipelineBuilder pipelineBuilder;
         pipelineBuilder.addColorProcessor(fp);
         pipelineBuilder.setRenderTarget(renderTarget);
         drawTarget->drawSimpleRect(&pipelineBuilder,
                                    GrColor_WHITE,
                                    matrix,
                                    SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height)));
     }
@@ skipping 165 matching lines @@
     GrRenderTarget* rt = surface->asRenderTarget();
     if (fGpu && rt) {
         fGpu->resolveRenderTarget(rt);
     }
 }
 
 void GrContext::discardRenderTarget(GrRenderTarget* renderTarget) {
     SkASSERT(renderTarget);
     ASSERT_OWNED_RESOURCE(renderTarget);
     AutoCheckFlush acf(this);
-    GrDrawTarget* target = this->prepareToDraw(NULL, NULL, NULL, NULL);
+    GrDrawTarget* target = this->prepareToDraw();
     if (NULL == target) {
         return;
     }
     target->discard(renderTarget);
 }
 
 void GrContext::copySurface(GrSurface* dst, GrSurface* src, const SkIRect& srcRect,
                             const SkIPoint& dstPoint, uint32_t pixelOpsFlags) {
     if (NULL == src || NULL == dst) {
         return;
     }
     ASSERT_OWNED_RESOURCE(src);
     ASSERT_OWNED_RESOURCE(dst);
 
     // Since we're going to the draw target and not GPU, no need to check kNoFlush
     // here.
 
-    GrDrawTarget* target = this->prepareToDraw(NULL, NULL, NULL, NULL);
+    GrDrawTarget* target = this->prepareToDraw();
     if (NULL == target) {
         return;
     }
     target->copySurface(dst, src, srcRect, dstPoint);
 
     if (kFlushWrites_PixelOp & pixelOpsFlags) {
         this->flush();
     }
 }
 
 void GrContext::flushSurfaceWrites(GrSurface* surface) {
     if (surface->surfacePriv().hasPendingWrite()) {
         this->flush();
     }
 }
 
 GrDrawTarget* GrContext::prepareToDraw(GrPipelineBuilder* pipelineBuilder,
                                        GrRenderTarget* rt,
+                                       const GrClip& clip,
                                        const GrPaint* paint,
                                        const AutoCheckFlush* acf) {
     if (NULL == fGpu) {
         return NULL;
     }
 
-    if (pipelineBuilder) {
-        ASSERT_OWNED_RESOURCE(rt);
-        SkASSERT(rt && paint && acf);
-        pipelineBuilder->setFromPaint(*paint, rt, fClip);
+    ASSERT_OWNED_RESOURCE(rt);
+    SkASSERT(rt && paint && acf);
+    pipelineBuilder->setFromPaint(*paint, rt, clip);
+    return fDrawBuffer;
+}
+
+GrDrawTarget* GrContext::prepareToDraw() {
+    if (NULL == fGpu) {
+        return NULL;
     }
     return fDrawBuffer;
 }
 
 /*
  * This method finds a path renderer that can draw the specified path on
  * the provided target.
  * Due to its expense, the software path renderer has split out so it can
  * can be individually allowed/disallowed via the "allowSW" boolean.
  */
@@ skipping 63 matching lines @@
         SkNEW_ARGS(GrIndexBufferAllocPool, (fGpu, false,
                                    DRAW_BUFFER_IBPOOL_BUFFER_SIZE,
                                    DRAW_BUFFER_IBPOOL_PREALLOC_BUFFERS));
 
     fDrawBuffer = SkNEW_ARGS(GrInOrderDrawBuffer, (fGpu,
                                                    fDrawBufferVBAllocPool,
                                                    fDrawBufferIBAllocPool));
 }
 
 GrDrawTarget* GrContext::getTextTarget() {
-    return this->prepareToDraw(NULL, NULL, NULL, NULL);
+    return this->prepareToDraw();
 }
 
 const GrIndexBuffer* GrContext::getQuadIndexBuffer() const {
     return fGpu->getQuadIndexBuffer();
 }
 
 namespace {
 void test_pm_conversions(GrContext* ctx, int* pmToUPMValue, int* upmToPMValue) {
     GrConfigConversionEffect::PMConversion pmToUPM;
     GrConfigConversionEffect::PMConversion upmToPM;
@@ skipping 75 matching lines @@
     }
 }
 
 void GrContext::removeGpuTraceMarker(const GrGpuTraceMarker* marker) {
     fGpu->removeGpuTraceMarker(marker);
     if (fDrawBuffer) {
         fDrawBuffer->removeGpuTraceMarker(marker);
     }
 }