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//
// Copyright 2014 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Buffer11.h: Defines the rx::Buffer11 class which implements rx::BufferImpl via rx::BufferD3D.
#ifndef LIBANGLE_RENDERER_D3D_D3D11_BUFFER11_H_
#define LIBANGLE_RENDERER_D3D_D3D11_BUFFER11_H_
#include <map>
#include "libANGLE/angletypes.h"
#include "libANGLE/renderer/d3d/BufferD3D.h"
namespace gl
{
class FramebufferAttachment;
}
namespace rx
{
class Renderer11;
struct SourceIndexData;
struct TranslatedAttribute;
enum BufferUsage
{
BUFFER_USAGE_STAGING,
BUFFER_USAGE_VERTEX_OR_TRANSFORM_FEEDBACK,
BUFFER_USAGE_INDEX,
BUFFER_USAGE_PIXEL_UNPACK,
BUFFER_USAGE_PIXEL_PACK,
BUFFER_USAGE_UNIFORM,
BUFFER_USAGE_SYSTEM_MEMORY,
BUFFER_USAGE_EMULATED_INDEXED_VERTEX,
BUFFER_USAGE_COUNT,
};
struct PackPixelsParams
{
PackPixelsParams();
PackPixelsParams(const gl::Rectangle &area, GLenum format, GLenum type, GLuint outputPitch,
const gl::PixelPackState &pack, ptrdiff_t offset);
gl::Rectangle area;
GLenum format;
GLenum type;
GLuint outputPitch;
gl::Buffer *packBuffer;
gl::PixelPackState pack;
ptrdiff_t offset;
};
typedef size_t DataRevision;
class Buffer11 : public BufferD3D
{
public:
Buffer11(Renderer11 *renderer);
virtual ~Buffer11();
ID3D11Buffer *getBuffer(BufferUsage usage);
ID3D11Buffer *getEmulatedIndexedBuffer(SourceIndexData *indexInfo, const TranslatedAttribute *attribute);
ID3D11Buffer *getConstantBufferRange(GLintptr offset, GLsizeiptr size);
ID3D11ShaderResourceView *getSRV(DXGI_FORMAT srvFormat);
bool isMapped() const { return mMappedStorage != NULL; }
gl::Error packPixels(const gl::FramebufferAttachment &readAttachment,
const PackPixelsParams ¶ms);
size_t getTotalCPUBufferMemoryBytes() const;
// BufferD3D implementation
virtual size_t getSize() const { return mSize; }
virtual bool supportsDirectBinding() const;
gl::Error getData(const uint8_t **outData) override;
// BufferImpl implementation
virtual gl::Error setData(const void* data, size_t size, GLenum usage);
virtual gl::Error setSubData(const void* data, size_t size, size_t offset);
virtual gl::Error copySubData(BufferImpl* source, GLintptr sourceOffset, GLintptr destOffset, GLsizeiptr size);
virtual gl::Error map(GLenum access, GLvoid **mapPtr);
virtual gl::Error mapRange(size_t offset, size_t length, GLbitfield access, GLvoid **mapPtr);
virtual gl::Error unmap(GLboolean *result);
virtual void markTransformFeedbackUsage();
private:
class BufferStorage;
class EmulatedIndexedStorage;
class NativeStorage;
class PackStorage;
class SystemMemoryStorage;
Renderer11 *mRenderer;
size_t mSize;
BufferStorage *mMappedStorage;
std::vector<BufferStorage*> mBufferStorages;
struct ConstantBufferCacheEntry
{
ConstantBufferCacheEntry() : storage(nullptr), lruCount(0) { }
BufferStorage *storage;
unsigned int lruCount;
};
// Cache of D3D11 constant buffer for specific ranges of buffer data.
// This is used to emulate UBO ranges on 11.0 devices.
// Constant buffers are indexed by there start offset.
typedef std::map<GLintptr /*offset*/, ConstantBufferCacheEntry> ConstantBufferCache;
ConstantBufferCache mConstantBufferRangeStoragesCache;
size_t mConstantBufferStorageAdditionalSize;
unsigned int mMaxConstantBufferLruCount;
typedef std::pair<ID3D11Buffer *, ID3D11ShaderResourceView *> BufferSRVPair;
std::map<DXGI_FORMAT, BufferSRVPair> mBufferResourceViews;
unsigned int mReadUsageCount;
void markBufferUsage();
NativeStorage *getStagingStorage();
PackStorage *getPackStorage();
gl::Error getSystemMemoryStorage(SystemMemoryStorage **storageOut);
void updateBufferStorage(BufferStorage *storage, size_t sourceOffset, size_t storageSize);
BufferStorage *getBufferStorage(BufferUsage usage);
BufferStorage *getLatestBufferStorage() const;
BufferStorage *getConstantBufferRangeStorage(GLintptr offset, GLsizeiptr size);
void invalidateEmulatedIndexedBuffer();
};
}
#endif // LIBANGLE_RENDERER_D3D_D3D11_BUFFER11_H_
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