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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 GrDrawOp_DEFINED
#define GrDrawOp_DEFINED
#include <functional>
#include "GrDeferredUpload.h"
#include "GrOp.h"
#include "GrPipeline.h"
class GrAppliedClip;
/**
* Base class for GrOps that draw. These ops can draw into an op list's GrRenderTarget.
*/
class GrDrawOp : public GrOp {
public:
GrDrawOp(uint32_t classID) : INHERITED(classID) {}
/**
* This information is required to determine how to compute a GrAppliedClip from a GrClip for
* this op.
*/
enum class FixedFunctionFlags : uint32_t {
kNone = 0x0,
/** Indices that the op will enable MSAA or mixed samples rendering. */
kUsesHWAA = 0x1,
/** Indices that the op reads and/or writes the stencil buffer */
kUsesStencil = 0x2,
};
GR_DECL_BITFIELD_CLASS_OPS_FRIENDS(FixedFunctionFlags);
virtual FixedFunctionFlags fixedFunctionFlags() const = 0;
enum class RequiresDstTexture : bool { kNo = false, kYes = true };
/**
* This is called after the GrAppliedClip has been computed and just prior to recording the op
* or combining it with a previously recorded op. The op should convert any proxies or resources
* it owns to "pending io" status so that resource allocation can be more optimal. Additionally,
* at this time the op must report whether a copy of the destination (or destination texture
* itself) needs to be provided to the GrXferProcessor when this op executes.
*/
virtual RequiresDstTexture finalize(const GrCaps&, const GrAppliedClip*) = 0;
private:
typedef GrOp INHERITED;
};
GR_MAKE_BITFIELD_CLASS_OPS(GrDrawOp::FixedFunctionFlags);
#endif
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