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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 gr_instanced_GLInstancedRendering_DEFINED
#define gr_instanced_GLInstancedRendering_DEFINED
#include "GrCaps.h"
#include "gl/GrGLBuffer.h"
#include "instanced/InstancedOp.h"
#include "instanced/InstancedRendering.h"
class GrGLCaps;
class GrGLGpu;
#define GR_GL_LOG_INSTANCED_OPS 0
namespace gr_instanced {
class GLOpAllocator final : public OpAllocator {
public:
GLOpAllocator(const GrCaps* caps) : INHERITED(caps) {}
private:
std::unique_ptr<InstancedOp> makeOp(GrPaint&& paint) override;
typedef OpAllocator INHERITED;
};
class GLInstancedRendering final : public InstancedRendering {
public:
GLInstancedRendering(GrGLGpu*);
~GLInstancedRendering() override;
private:
/**
* Called by GrGLCaps to determine the level of support this class can offer for instanced
* rendering on the current platform.
*/
static GrCaps::InstancedSupport CheckSupport(const GrGLCaps&);
GrGLGpu* glGpu() const;
void onBeginFlush(GrResourceProvider*) override;
void onDraw(const GrPipeline&, const InstanceProcessor&, const InstancedOp*) override;
void onEndFlush() override;
void onResetGpuResources(ResetType) override;
void flushInstanceAttribs(int baseInstance);
struct GLDrawCmdInfo {
IndexRange fGeometry;
int fInstanceCount;
};
GrGLuint fVertexArrayID;
sk_sp<GrBuffer> fInstanceBuffer;
sk_sp<GrBuffer> fDrawIndirectBuffer;
SkAutoSTMalloc<1024, GLDrawCmdInfo> fGLDrawCmdsInfo;
GrGpuResource::UniqueID fInstanceAttribsBufferUniqueId;
int fInstanceAttribsBaseInstance;
friend class ::GrGLCaps; // For CheckSupport.
typedef InstancedRendering INHERITED;
};
}
#endif
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