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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrClearBatch_DEFINED
#define GrClearBatch_DEFINED
#include "GrBatch.h"
#include "GrBatchFlushState.h"
#include "GrGpu.h"
#include "GrGpuCommandBuffer.h"
#include "GrRenderTarget.h"
class GrClearBatch final : public GrBatch {
public:
DEFINE_BATCH_CLASS_ID
static sk_sp<GrBatch> Make(const SkIRect& rect, GrColor color, GrRenderTarget* rt) {
return sk_sp<GrBatch>(new GrClearBatch(rect, color, rt));
}
const char* name() const override { return "Clear"; }
uint32_t renderTargetUniqueID() const override { return fRenderTarget.get()->getUniqueID(); }
GrRenderTarget* renderTarget() const override { return fRenderTarget.get(); }
SkString dumpInfo() const override {
SkString string;
string.printf("Color: 0x%08x, Rect [L: %d, T: %d, R: %d, B: %d], RT: %d",
fColor, fRect.fLeft, fRect.fTop, fRect.fRight, fRect.fBottom,
fRenderTarget.get()->getUniqueID());
string.append(INHERITED::dumpInfo());
return string;
}
private:
GrClearBatch(const SkIRect& rect, GrColor color, GrRenderTarget* rt)
: INHERITED(ClassID())
, fRect(rect)
, fColor(color)
, fRenderTarget(rt) {
this->setBounds(SkRect::Make(rect), HasAABloat::kNo, IsZeroArea::kNo);
}
bool onCombineIfPossible(GrBatch* t, const GrCaps& caps) override {
// This could be much more complicated. Currently we look at cases where the new clear
// contains the old clear, or when the new clear is a subset of the old clear and is the
// same color.
GrClearBatch* cb = t->cast<GrClearBatch>();
SkASSERT(cb->fRenderTarget == fRenderTarget);
if (cb->fRect.contains(fRect)) {
fRect = cb->fRect;
this->replaceBounds(*t);
fColor = cb->fColor;
return true;
} else if (cb->fColor == fColor && fRect.contains(cb->fRect)) {
return true;
}
return false;
}
void onPrepare(GrBatchFlushState*) override {}
void onDraw(GrBatchFlushState* state) override {
state->commandBuffer()->clear(fRect, fColor, fRenderTarget.get());
}
SkIRect fRect;
GrColor fColor;
GrPendingIOResource<GrRenderTarget, kWrite_GrIOType> fRenderTarget;
typedef GrBatch INHERITED;
};
#endif
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