void GrGLPathRendering::onStencilPath(const StencilPathArgs& args, const GrPath* path) {
GrGLGpu* gpu = this->gpu();
SkASSERT(gpu->caps()->shaderCaps()->pathRenderingSupport());
gpu->flushColorWrite(false);
gpu->flushDrawFace(GrPipelineBuilder::kBoth_DrawFace);
GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(args.fRenderTarget);
SkISize size = SkISize::Make(rt->width(), rt->height());
this->setProjectionMatrix(*args.fViewMatrix, size, rt->origin());
gpu->flushScissor(*args.fScissor, rt->getViewport(), rt->origin());
gpu->flushHWAAState(rt, args.fUseHWAA);
gpu->flushRenderTarget(rt, NULL);
const GrGLPath* glPath = static_cast<const GrGLPath*>(path);
this->flushPathStencilSettings(*args.fStencil);
SkASSERT(!fHWPathStencilSettings.isTwoSided());
GrGLenum fillMode = gr_stencil_op_to_gl_path_rendering_fill_mode(
fHWPathStencilSettings.passOp(GrStencilSettings::kFront_Face));
GrGLint writeMask = fHWPathStencilSettings.writeMask(GrStencilSettings::kFront_Face);
if (glPath->shouldFill()) {
GL_CALL(StencilFillPath(glPath->pathID(), fillMode, writeMask));
}
if (glPath->shouldStroke()) {
GL_CALL(StencilStrokePath(glPath->pathID(), 0xffff, writeMask));
}
}
inline void GrGLPathRendering::stencilThenCoverStrokePath(GrGLuint path, GrGLint reference,
GrGLuint mask, GrGLenum coverMode) {
if (caps().stencilThenCoverSupport) {
GL_CALL(StencilThenCoverStrokePath(path, reference, mask, coverMode));
return;
}
GL_CALL(StencilStrokePath(path, reference, mask));
GL_CALL(CoverStrokePath(path, coverMode));
}
void GrGLPathRendering::drawPath(const GrPath* path, SkPath::FillType fill) {
GrGLuint id = static_cast<const GrGLPath*>(path)->pathID();
SkASSERT(NULL != fGpu->drawState()->getRenderTarget());
SkASSERT(NULL != fGpu->drawState()->getRenderTarget()->getStencilBuffer());
this->flushPathStencilSettings(fill);
SkASSERT(!fHWPathStencilSettings.isTwoSided());
const SkStrokeRec& stroke = path->getStroke();
SkPath::FillType nonInvertedFill = SkPath::ConvertToNonInverseFillType(fill);
GrGLenum fillMode =
gr_stencil_op_to_gl_path_rendering_fill_mode(fHWPathStencilSettings.passOp(GrStencilSettings::kFront_Face));
GrGLint writeMask = fHWPathStencilSettings.writeMask(GrStencilSettings::kFront_Face);
if (nonInvertedFill == fill) {
if (stroke.needToApply()) {
if (SkStrokeRec::kStrokeAndFill_Style == stroke.getStyle()) {
GL_CALL(StencilFillPath(id, fillMode, writeMask));
}
this->stencilThenCoverStrokePath(id, 0xffff, writeMask, GR_GL_BOUNDING_BOX);
} else {
this->stencilThenCoverFillPath(id, fillMode, writeMask, GR_GL_BOUNDING_BOX);
}
} else {
if (stroke.isFillStyle() || SkStrokeRec::kStrokeAndFill_Style == stroke.getStyle()) {
GL_CALL(StencilFillPath(id, fillMode, writeMask));
}
if (stroke.needToApply()) {
GL_CALL(StencilStrokePath(id, 0xffff, writeMask));
}
GrDrawState* drawState = fGpu->drawState();
GrDrawState::AutoViewMatrixRestore avmr;
SkRect bounds = SkRect::MakeLTRB(0, 0,
SkIntToScalar(drawState->getRenderTarget()->width()),
SkIntToScalar(drawState->getRenderTarget()->height()));
SkMatrix vmi;
// mapRect through persp matrix may not be correct
if (!drawState->getViewMatrix().hasPerspective() && drawState->getViewInverse(&vmi)) {
vmi.mapRect(&bounds);
// theoretically could set bloat = 0, instead leave it because of matrix inversion
// precision.
SkScalar bloat = drawState->getViewMatrix().getMaxScale() * SK_ScalarHalf;
bounds.outset(bloat, bloat);
} else {
avmr.setIdentity(drawState);
}
fGpu->drawSimpleRect(bounds);
}
}
void GrGLPathRendering::stencilPath(const GrPath* path, const GrStencilSettings& stencilSettings) {
GrGLuint id = static_cast<const GrGLPath*>(path)->pathID();
this->flushPathStencilSettings(stencilSettings);
SkASSERT(!fHWPathStencilSettings.isTwoSided());
const SkStrokeRec& stroke = path->getStroke();
GrGLenum fillMode =
gr_stencil_op_to_gl_path_rendering_fill_mode(fHWPathStencilSettings.passOp(GrStencilSettings::kFront_Face));
GrGLint writeMask = fHWPathStencilSettings.writeMask(GrStencilSettings::kFront_Face);
if (stroke.isFillStyle() || SkStrokeRec::kStrokeAndFill_Style == stroke.getStyle()) {
GL_CALL(StencilFillPath(id, fillMode, writeMask));
}
if (stroke.needToApply()) {
GL_CALL(StencilStrokePath(id, 0xffff, writeMask));
}
}
