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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrGrInstancedPipelineInfo_DEFINED
#define GrGrInstancedPipelineInfo_DEFINED
#include "GrRenderTarget.h"
/**
* Provides info about the pipeline that GrInstancedRendering needs in order to select appropriate
* drawing algorithms.
*/
struct GrInstancedPipelineInfo {
GrInstancedPipelineInfo(const GrRenderTarget* rt)
: fIsMultisampled(rt->isStencilBufferMultisampled()),
fIsMixedSampled(rt->hasMixedSamples()),
fIsRenderingToFloat(GrPixelConfigIsFloatingPoint(rt->desc().fConfig)),
fColorDisabled(false),
fDrawingShapeToStencil(false),
fCanDiscard(false) {
}
bool canUseCoverageAA() const {
return !fIsMultisampled || (fIsMixedSampled && !fDrawingShapeToStencil);
}
bool fIsMultisampled : 1;
bool fIsMixedSampled : 1;
bool fIsRenderingToFloat : 1;
bool fColorDisabled : 1;
/**
* Indicates that the instanced renderer should take extra precautions to ensure the shape gets
* drawn correctly to the stencil buffer (e.g. no coverage AA). NOTE: this does not mean a
* stencil test is or is not active.
*/
bool fDrawingShapeToStencil : 1;
/**
* Indicates that the instanced renderer can use processors with discard instructions. This
* should not be set if the shader will use derivatives, automatic mipmap LOD, or other features
* that depend on neighboring pixels. Some draws will fail to create if this is not set.
*/
bool fCanDiscard : 1;
};
#endif
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