/*
* 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 "GrBatchTest.h"
#include "GrColor.h"
#include "GrDrawContext.h"
#include "GrDrawingManager.h"
#include "GrOvalRenderer.h"
#include "GrPathRenderer.h"
#include "GrRenderTarget.h"
#include "GrRenderTargetPriv.h"
#include "GrResourceProvider.h"
#include "SkSurfacePriv.h"
#include "batches/GrBatch.h"
#include "batches/GrDrawAtlasBatch.h"
#include "batches/GrDrawVerticesBatch.h"
#include "batches/GrRectBatchFactory.h"
#include "batches/GrNinePatch.h" // TODO Factory
#include "text/GrAtlasTextContext.h"
#include "text/GrStencilAndCoverTextContext.h"
#include "../private/GrAuditTrail.h"
#define ASSERT_OWNED_RESOURCE(R) SkASSERT(!(R) || (R)->getContext() == fDrawingManager->getContext())
#define ASSERT_SINGLE_OWNER \
SkDEBUGCODE(GrSingleOwner::AutoEnforce debug_SingleOwner(fSingleOwner);)
#define RETURN_IF_ABANDONED if (fDrawingManager->abandoned()) { return; }
#define RETURN_FALSE_IF_ABANDONED if (fDrawingManager->abandoned()) { return false; }
#define RETURN_NULL_IF_ABANDONED if (fDrawingManager->abandoned()) { return nullptr; }
class AutoCheckFlush {
public:
AutoCheckFlush(GrDrawingManager* drawingManager) : fDrawingManager(drawingManager) {
SkASSERT(fDrawingManager);
}
~AutoCheckFlush() { fDrawingManager->getContext()->flushIfNecessary(); }
private:
GrDrawingManager* fDrawingManager;
};
// In MDB mode the reffing of the 'getLastDrawTarget' call's result allows in-progress
// drawTargets to be picked up and added to by drawContexts lower in the call
// stack. When this occurs with a closed drawTarget, a new one will be allocated
// when the drawContext attempts to use it (via getDrawTarget).
GrDrawContext::GrDrawContext(GrContext* context,
GrDrawingManager* drawingMgr,
GrRenderTarget* rt,
const SkSurfaceProps* surfaceProps,
GrAuditTrail* auditTrail,
GrSingleOwner* singleOwner)
: fDrawingManager(drawingMgr)
, fRenderTarget(rt)
, fDrawTarget(SkSafeRef(rt->getLastDrawTarget()))
, fContext(context)
, fSurfaceProps(SkSurfacePropsCopyOrDefault(surfaceProps))
, fAuditTrail(auditTrail)
#ifdef SK_DEBUG
, fSingleOwner(singleOwner)
#endif
{
SkDEBUGCODE(this->validate();)
}
#ifdef SK_DEBUG
void GrDrawContext::validate() const {
SkASSERT(fRenderTarget);
ASSERT_OWNED_RESOURCE(fRenderTarget);
if (fDrawTarget && !fDrawTarget->isClosed()) {
SkASSERT(fRenderTarget->getLastDrawTarget() == fDrawTarget);
}
}
#endif
GrDrawContext::~GrDrawContext() {
ASSERT_SINGLE_OWNER
SkSafeUnref(fDrawTarget);
}
GrDrawTarget* GrDrawContext::getDrawTarget() {
ASSERT_SINGLE_OWNER
SkDEBUGCODE(this->validate();)
if (!fDrawTarget || fDrawTarget->isClosed()) {
fDrawTarget = fDrawingManager->newDrawTarget(fRenderTarget);
}
return fDrawTarget;
}
bool GrDrawContext::copySurface(GrSurface* src, const SkIRect& srcRect, const SkIPoint& dstPoint) {
ASSERT_SINGLE_OWNER
RETURN_FALSE_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::copySurface");
return this->getDrawTarget()->copySurface(fRenderTarget, src, srcRect, dstPoint);
}
void GrDrawContext::drawText(const GrClip& clip, const GrPaint& grPaint,
const SkPaint& skPaint,
const SkMatrix& viewMatrix,
const char text[], size_t byteLength,
SkScalar x, SkScalar y, const SkIRect& clipBounds) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawText");
if (!fAtlasTextContext) {
fAtlasTextContext.reset(GrAtlasTextContext::Create());
}
fAtlasTextContext->drawText(fContext, this, clip, grPaint, skPaint, viewMatrix, fSurfaceProps,
text, byteLength, x, y, clipBounds);
}
void GrDrawContext::drawPosText(const GrClip& clip, const GrPaint& grPaint,
const SkPaint& skPaint,
const SkMatrix& viewMatrix,
const char text[], size_t byteLength,
const SkScalar pos[], int scalarsPerPosition,
const SkPoint& offset, const SkIRect& clipBounds) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawPosText");
if (!fAtlasTextContext) {
fAtlasTextContext.reset(GrAtlasTextContext::Create());
}
fAtlasTextContext->drawPosText(fContext, this, clip, grPaint, skPaint, viewMatrix,
fSurfaceProps, text, byteLength, pos, scalarsPerPosition,
offset, clipBounds);
}
void GrDrawContext::drawTextBlob(const GrClip& clip, const SkPaint& skPaint,
const SkMatrix& viewMatrix, const SkTextBlob* blob,
SkScalar x, SkScalar y,
SkDrawFilter* filter, const SkIRect& clipBounds) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawTextBlob");
if (!fAtlasTextContext) {
fAtlasTextContext.reset(GrAtlasTextContext::Create());
}
fAtlasTextContext->drawTextBlob(fContext, this, clip, skPaint, viewMatrix, fSurfaceProps, blob,
x, y, filter, clipBounds);
}
void GrDrawContext::discard() {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::discard");
AutoCheckFlush acf(fDrawingManager);
this->getDrawTarget()->discard(fRenderTarget);
}
void GrDrawContext::clear(const SkIRect* rect,
const GrColor color,
bool canIgnoreRect) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::clear");
AutoCheckFlush acf(fDrawingManager);
this->getDrawTarget()->clear(rect, color, canIgnoreRect, fRenderTarget);
}
void GrDrawContext::drawPaint(const GrClip& clip,
const GrPaint& origPaint,
const SkMatrix& viewMatrix) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawPaint");
// 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(fRenderTarget->width()),
SkIntToScalar(fRenderTarget->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(clip, *paint, viewMatrix, r);
} else {
SkMatrix localMatrix;
if (!viewMatrix.invert(&localMatrix)) {
SkDebugf("Could not invert matrix\n");
return;
}
AutoCheckFlush acf(fDrawingManager);
GrPipelineBuilder pipelineBuilder(*paint, fRenderTarget, clip);
SkAutoTUnref<GrDrawBatch> batch(
GrRectBatchFactory::CreateNonAAFill(paint->getColor(), SkMatrix::I(), r, nullptr,
&localMatrix));
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
}
}
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;
}
static bool view_matrix_ok_for_aa_fill_rect(const SkMatrix& viewMatrix) {
return viewMatrix.preservesRightAngles();
}
static bool should_apply_coverage_aa(const GrPaint& paint, GrRenderTarget* rt) {
return paint.isAntiAlias() && !rt->isUnifiedMultisampled();
}
void GrDrawContext::drawRect(const GrClip& clip,
const GrPaint& paint,
const SkMatrix& viewMatrix,
const SkRect& rect,
const GrStrokeInfo* strokeInfo) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawRect");
// Dashing should've been devolved to a path in SkGpuDevice
SkASSERT(!strokeInfo || !strokeInfo->isDashed());
AutoCheckFlush acf(fDrawingManager);
SkScalar width = nullptr == strokeInfo ? -1 : strokeInfo->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;
fRenderTarget->getBoundsRect(&rtRect);
SkRect clipSpaceRTRect = rtRect;
bool checkClip = GrClip::kWideOpen_ClipType != clip.clipType();
if (checkClip) {
clipSpaceRTRect.offset(SkIntToScalar(clip.origin().fX),
SkIntToScalar(clip.origin().fY));
}
// Does the clip contain the entire RT?
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]) &&
rect_contains_inclusive(rect, srcSpaceRTQuad[3])) {
// Will it blend?
GrColor clearColor;
if (paint.isConstantBlendedColor(&clearColor)) {
this->getDrawTarget()->clear(nullptr, clearColor, true, fRenderTarget);
return;
}
}
}
}
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
GrColor color = paint.getColor();
SkAutoTUnref<GrDrawBatch> batch;
if (should_apply_coverage_aa(paint, fRenderTarget)) {
if (width >= 0) {
// The stroke path needs the rect to remain axis aligned (no rotation or skew).
if (viewMatrix.rectStaysRect()) {
batch.reset(GrRectBatchFactory::CreateAAStroke(color, viewMatrix, rect,
*strokeInfo));
}
} else {
// The fill path can handle rotation but not skew.
if (view_matrix_ok_for_aa_fill_rect(viewMatrix)) {
SkRect devBoundRect;
viewMatrix.mapRect(&devBoundRect, rect);
batch.reset(GrRectBatchFactory::CreateAAFill(color, viewMatrix, rect,
devBoundRect));
}
}
if (!batch) {
SkPath path;
path.setIsVolatile(true);
path.addRect(rect);
this->internalDrawPath(&pipelineBuilder, viewMatrix, color, true, path, *strokeInfo);
SkASSERT(paint.isAntiAlias());
return;
}
} else if (width >= 0) {
// Non-AA hairlines are snapped to pixel centers to make which pixels are hit deterministic
bool snapToPixelCenters = (0 == width && !fRenderTarget->isUnifiedMultisampled());
batch.reset(GrRectBatchFactory::CreateNonAAStroke(color, viewMatrix, rect, width,
snapToPixelCenters));
// Depending on sub-pixel coordinates and the particular GPU, we may lose a corner of
// hairline rects. We jam all the vertices to pixel centers to avoid this, but not when MSAA
// is enabled because it can cause ugly artifacts.
pipelineBuilder.setState(GrPipelineBuilder::kSnapVerticesToPixelCenters_Flag,
snapToPixelCenters);
} else {
// filled BW rect
batch.reset(GrRectBatchFactory::CreateNonAAFill(color, viewMatrix, rect, nullptr, nullptr));
}
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
}
void GrDrawContext::fillRectToRect(const GrClip& clip,
const GrPaint& paint,
const SkMatrix& viewMatrix,
const SkRect& rectToDraw,
const SkRect& localRect) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::fillRectToRect");
AutoCheckFlush acf(fDrawingManager);
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
SkAutoTUnref<GrDrawBatch> batch;
if (should_apply_coverage_aa(paint, fRenderTarget) &&
view_matrix_ok_for_aa_fill_rect(viewMatrix)) {
batch.reset(GrAAFillRectBatch::CreateWithLocalRect(paint.getColor(), viewMatrix, rectToDraw,
localRect));
} else {
batch.reset(GrRectBatchFactory::CreateNonAAFill(paint.getColor(), viewMatrix, rectToDraw,
&localRect, nullptr));
}
if (batch) {
this->drawBatch(&pipelineBuilder, batch);
}
}
void GrDrawContext::fillRectWithLocalMatrix(const GrClip& clip,
const GrPaint& paint,
const SkMatrix& viewMatrix,
const SkRect& rectToDraw,
const SkMatrix& localMatrix) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::fillRectWithLocalMatrix");
AutoCheckFlush acf(fDrawingManager);
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
SkAutoTUnref<GrDrawBatch> batch;
if (should_apply_coverage_aa(paint, fRenderTarget) &&
view_matrix_ok_for_aa_fill_rect(viewMatrix)) {
batch.reset(GrAAFillRectBatch::Create(paint.getColor(), viewMatrix, localMatrix,
rectToDraw));
} else {
batch.reset(GrRectBatchFactory::CreateNonAAFill(paint.getColor(), viewMatrix, rectToDraw,
nullptr, &localMatrix));
}
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
}
void GrDrawContext::drawVertices(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) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawVertices");
AutoCheckFlush acf(fDrawingManager);
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
// TODO clients should give us bounds
SkRect bounds;
if (!bounds.setBoundsCheck(positions, vertexCount)) {
SkDebugf("drawVertices call empty bounds\n");
return;
}
viewMatrix.mapRect(&bounds);
// If we don't have AA then we outset for a half pixel in each direction to account for
// snapping. We also do this for the "hair" primitive types: lines and points since they have
// a 1 pixel thickness in device space.
if (!paint.isAntiAlias() || GrIsPrimTypeLines(primitiveType) ||
kPoints_GrPrimitiveType == primitiveType) {
bounds.outset(0.5f, 0.5f);
}
GrDrawVerticesBatch::Geometry geometry;
geometry.fColor = paint.getColor();
SkAutoTUnref<GrDrawBatch> batch(GrDrawVerticesBatch::Create(geometry, primitiveType, viewMatrix,
positions, vertexCount, indices,
indexCount, colors, texCoords,
bounds));
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
}
///////////////////////////////////////////////////////////////////////////////
void GrDrawContext::drawAtlas(const GrClip& clip,
const GrPaint& paint,
const SkMatrix& viewMatrix,
int spriteCount,
const SkRSXform xform[],
const SkRect texRect[],
const SkColor colors[]) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawAtlas");
AutoCheckFlush acf(fDrawingManager);
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
GrDrawAtlasBatch::Geometry geometry;
geometry.fColor = paint.getColor();
SkAutoTUnref<GrDrawBatch> batch(GrDrawAtlasBatch::Create(geometry, viewMatrix, spriteCount,
xform, texRect, colors));
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
}
///////////////////////////////////////////////////////////////////////////////
void GrDrawContext::drawRRect(const GrClip& clip,
const GrPaint& paint,
const SkMatrix& viewMatrix,
const SkRRect& rrect,
const GrStrokeInfo& strokeInfo) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawRRect");
if (rrect.isEmpty()) {
return;
}
SkASSERT(!strokeInfo.isDashed()); // this should've been devolved to a path in SkGpuDevice
AutoCheckFlush acf(fDrawingManager);
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
GrColor color = paint.getColor();
if (should_apply_coverage_aa(paint, fRenderTarget)) {
GrShaderCaps* shaderCaps = fContext->caps()->shaderCaps();
SkAutoTUnref<GrDrawBatch> batch(GrOvalRenderer::CreateRRectBatch(color,
viewMatrix,
rrect,
strokeInfo,
shaderCaps));
if (batch) {
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
return;
}
}
SkPath path;
path.setIsVolatile(true);
path.addRRect(rrect);
this->internalDrawPath(&pipelineBuilder, viewMatrix, color,
paint.isAntiAlias(), path, strokeInfo);
}
///////////////////////////////////////////////////////////////////////////////
void GrDrawContext::drawOval(const GrClip& clip,
const GrPaint& paint,
const SkMatrix& viewMatrix,
const SkRect& oval,
const GrStrokeInfo& strokeInfo) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawOval");
if (oval.isEmpty()) {
return;
}
SkASSERT(!strokeInfo.isDashed()); // this should've been devolved to a path in SkGpuDevice
AutoCheckFlush acf(fDrawingManager);
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
GrColor color = paint.getColor();
if (should_apply_coverage_aa(paint, fRenderTarget)) {
GrShaderCaps* shaderCaps = fContext->caps()->shaderCaps();
SkAutoTUnref<GrDrawBatch> batch(GrOvalRenderer::CreateOvalBatch(color,
viewMatrix,
oval,
strokeInfo,
shaderCaps));
if (batch) {
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
return;
}
}
SkPath path;
path.setIsVolatile(true);
path.addOval(oval);
this->internalDrawPath(&pipelineBuilder, viewMatrix, color,
paint.isAntiAlias(), path, strokeInfo);
}
void GrDrawContext::drawImageNine(const GrClip& clip,
const GrPaint& paint,
const SkMatrix& viewMatrix,
int imageWidth,
int imageHeight,
const SkIRect& center,
const SkRect& dst) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawImageNine");
AutoCheckFlush acf(fDrawingManager);
SkAutoTUnref<GrDrawBatch> batch(GrNinePatch::CreateNonAA(paint.getColor(), viewMatrix,
imageWidth, imageHeight,
center, dst));
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
}
// Can 'path' be drawn as a pair of filled nested rectangles?
static bool is_nested_rects(const SkMatrix& viewMatrix,
const SkPath& path,
const SkStrokeRec& stroke,
SkRect rects[2]) {
SkASSERT(stroke.isFillStyle());
if (path.isInverseFillType()) {
return false;
}
// TODO: this restriction could be lifted if we were willing to apply
// the matrix to all the points individually rather than just to the rect
if (!viewMatrix.rectStaysRect()) {
return false;
}
SkPath::Direction dirs[2];
if (!path.isNestedFillRects(rects, dirs)) {
return false;
}
if (SkPath::kWinding_FillType == path.getFillType() && dirs[0] == dirs[1]) {
// The two rects need to be wound opposite to each other
return false;
}
// Right now, nested rects where the margin is not the same width
// all around do not render correctly
const SkScalar* outer = rects[0].asScalars();
const SkScalar* inner = rects[1].asScalars();
bool allEq = true;
SkScalar margin = SkScalarAbs(outer[0] - inner[0]);
bool allGoE1 = margin >= SK_Scalar1;
for (int i = 1; i < 4; ++i) {
SkScalar temp = SkScalarAbs(outer[i] - inner[i]);
if (temp < SK_Scalar1) {
allGoE1 = false;
}
if (!SkScalarNearlyEqual(margin, temp)) {
allEq = false;
}
}
return allEq || allGoE1;
}
void GrDrawContext::drawBatch(const GrClip& clip,
const GrPaint& paint, GrDrawBatch* batch) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawBatch");
AutoCheckFlush acf(fDrawingManager);
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
}
void GrDrawContext::drawPathBatch(const GrPipelineBuilder& pipelineBuilder,
GrDrawPathBatchBase* batch) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawPathBatch");
AutoCheckFlush acf(fDrawingManager);
this->getDrawTarget()->drawPathBatch(pipelineBuilder, batch);
}
void GrDrawContext::drawPath(const GrClip& clip,
const GrPaint& paint,
const SkMatrix& viewMatrix,
const SkPath& path,
const GrStrokeInfo& strokeInfo) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawPath");
if (path.isEmpty()) {
if (path.isInverseFillType()) {
this->drawPaint(clip, paint, viewMatrix);
}
return;
}
GrColor color = paint.getColor();
// 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(fDrawingManager);
GrPipelineBuilder pipelineBuilder(paint, fRenderTarget, clip);
if (should_apply_coverage_aa(paint, fRenderTarget) && !strokeInfo.isDashed()) {
if (strokeInfo.getWidth() < 0 && !path.isConvex()) {
// Concave AA paths are expensive - try to avoid them for special cases
SkRect rects[2];
if (is_nested_rects(viewMatrix, path, strokeInfo, rects)) {
SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateAAFillNestedRects(
color, viewMatrix, rects));
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
return;
}
}
SkRect ovalRect;
bool isOval = path.isOval(&ovalRect);
if (isOval && !path.isInverseFillType()) {
GrShaderCaps* shaderCaps = fContext->caps()->shaderCaps();
SkAutoTUnref<GrDrawBatch> batch(GrOvalRenderer::CreateOvalBatch(color,
viewMatrix,
ovalRect,
strokeInfo,
shaderCaps));
if (batch) {
this->getDrawTarget()->drawBatch(pipelineBuilder, batch);
return;
}
}
}
this->internalDrawPath(&pipelineBuilder, viewMatrix, color,
paint.isAntiAlias(), path, strokeInfo);
}
void GrDrawContext::internalDrawPath(GrPipelineBuilder* pipelineBuilder,
const SkMatrix& viewMatrix,
GrColor color,
bool useAA,
const SkPath& path,
const GrStrokeInfo& strokeInfo) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkASSERT(!path.isEmpty());
// An Assumption here is that path renderer would use some form of tweaking
// the src color (either the input alpha or in the frag shader) to implement
// aa. If we have some future driver-mojo path AA that can do the right
// thing WRT to the blend then we'll need some query on the PR.
bool useCoverageAA = useAA &&
!pipelineBuilder->getRenderTarget()->isUnifiedMultisampled();
bool isStencilDisabled = pipelineBuilder->getStencil().isDisabled();
bool isStencilBufferMSAA = pipelineBuilder->getRenderTarget()->isStencilBufferMultisampled();
const GrPathRendererChain::DrawType type =
useCoverageAA ? GrPathRendererChain::kColorAntiAlias_DrawType
: GrPathRendererChain::kColor_DrawType;
const SkPath* pathPtr = &path;
SkTLazy<SkPath> tmpPath;
const GrStrokeInfo* strokeInfoPtr = &strokeInfo;
GrPathRenderer::CanDrawPathArgs canDrawArgs;
canDrawArgs.fShaderCaps = fDrawingManager->getContext()->caps()->shaderCaps();
canDrawArgs.fViewMatrix = &viewMatrix;
canDrawArgs.fPath = pathPtr;
canDrawArgs.fStroke = strokeInfoPtr;
canDrawArgs.fAntiAlias = useCoverageAA;
canDrawArgs.fIsStencilDisabled = isStencilDisabled;
canDrawArgs.fIsStencilBufferMSAA = isStencilBufferMSAA;
// Try a 1st time without stroking the path and without allowing the SW renderer
GrPathRenderer* pr = fDrawingManager->getPathRenderer(canDrawArgs, false, type);
GrStrokeInfo dashlessStrokeInfo(strokeInfo, false);
if (nullptr == pr && strokeInfo.isDashed()) {
// It didn't work above, so try again with dashed stroke converted to a dashless stroke.
if (!strokeInfo.applyDashToPath(tmpPath.init(), &dashlessStrokeInfo, *pathPtr)) {
return;
}
pathPtr = tmpPath.get();
if (pathPtr->isEmpty()) {
return;
}
strokeInfoPtr = &dashlessStrokeInfo;
canDrawArgs.fPath = pathPtr;
canDrawArgs.fStroke = strokeInfoPtr;
pr = fDrawingManager->getPathRenderer(canDrawArgs, false, type);
}
if (nullptr == pr) {
if (!GrPathRenderer::IsStrokeHairlineOrEquivalent(*strokeInfoPtr, viewMatrix, nullptr) &&
!strokeInfoPtr->isFillStyle()) {
// It didn't work above, so try again with stroke converted to a fill.
if (!tmpPath.isValid()) {
tmpPath.init();
}
dashlessStrokeInfo.setResScale(SkScalarAbs(viewMatrix.getMaxScale()));
if (!dashlessStrokeInfo.applyToPath(tmpPath.get(), *pathPtr)) {
return;
}
pathPtr = tmpPath.get();
if (pathPtr->isEmpty()) {
return;
}
dashlessStrokeInfo.setFillStyle();
strokeInfoPtr = &dashlessStrokeInfo;
}
canDrawArgs.fPath = pathPtr;
canDrawArgs.fStroke = strokeInfoPtr;
// This time, allow SW renderer
pr = fDrawingManager->getPathRenderer(canDrawArgs, true, type);
}
if (nullptr == pr) {
#ifdef SK_DEBUG
SkDebugf("Unable to find path renderer compatible with path.\n");
#endif
return;
}
GrPathRenderer::DrawPathArgs args;
args.fTarget = this->getDrawTarget();
args.fResourceProvider = fDrawingManager->getContext()->resourceProvider();
args.fPipelineBuilder = pipelineBuilder;
args.fColor = color;
args.fViewMatrix = &viewMatrix;
args.fPath = pathPtr;
args.fStroke = strokeInfoPtr;
args.fAntiAlias = useCoverageAA;
pr->drawPath(args);
}
void GrDrawContext::drawBatch(GrPipelineBuilder* pipelineBuilder, GrDrawBatch* batch) {
ASSERT_SINGLE_OWNER
RETURN_IF_ABANDONED
SkDEBUGCODE(this->validate();)
GR_AUDIT_TRAIL_AUTO_FRAME(fAuditTrail, "GrDrawContext::drawBatch");
this->getDrawTarget()->drawBatch(*pipelineBuilder, batch);
}