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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.
//
// BufferImpl.h: Defines the abstract rx::BufferImpl class.
#ifndef LIBANGLE_RENDERER_BUFFERIMPL_H_
#define LIBANGLE_RENDERER_BUFFERIMPL_H_
#include "common/PackedEnums.h"
#include "common/angleutils.h"
#include "common/mathutil.h"
#include "libANGLE/Error.h"
#include "libANGLE/Observer.h"
#include <stdint.h>
namespace gl
{
class BufferState;
class Context;
} // namespace gl
namespace rx
{
// We use two set of Subject messages. The CONTENTS_CHANGED message is signaled whenever data
// changes, to trigger re-translation or other events. Some buffers only need to be updated when the
// underlying driver object changes - this is notified via the STORAGE_CHANGED message.
class BufferImpl : public angle::Subject
{
public:
BufferImpl(const gl::BufferState &state) : mState(state) {}
~BufferImpl() override {}
virtual void destroy(const gl::Context *context) {}
virtual angle::Result setDataWithUsageFlags(const gl::Context *context,
gl::BufferBinding target,
GLeglClientBufferEXT clientBuffer,
const void *data,
size_t size,
gl::BufferUsage usage,
GLbitfield flags);
virtual angle::Result setData(const gl::Context *context,
gl::BufferBinding target,
const void *data,
size_t size,
gl::BufferUsage usage) = 0;
virtual angle::Result setSubData(const gl::Context *context,
gl::BufferBinding target,
const void *data,
size_t size,
size_t offset) = 0;
virtual angle::Result copySubData(const gl::Context *context,
BufferImpl *source,
GLintptr sourceOffset,
GLintptr destOffset,
GLsizeiptr size) = 0;
virtual angle::Result map(const gl::Context *context, GLenum access, void **mapPtr) = 0;
virtual angle::Result mapRange(const gl::Context *context,
size_t offset,
size_t length,
GLbitfield access,
void **mapPtr) = 0;
virtual angle::Result unmap(const gl::Context *context, GLboolean *result) = 0;
virtual angle::Result getIndexRange(const gl::Context *context,
gl::DrawElementsType type,
size_t offset,
size_t count,
bool primitiveRestartEnabled,
gl::IndexRange *outRange) = 0;
virtual angle::Result getSubData(const gl::Context *context,
GLintptr offset,
GLsizeiptr size,
void *outData);
virtual angle::Result onLabelUpdate(const gl::Context *context);
// Override if accurate native memory size information is available
virtual GLint64 getMemorySize() const;
virtual void onDataChanged() {}
protected:
const gl::BufferState &mState;
};
inline GLint64 BufferImpl::getMemorySize() const
{
return 0;
}
} // namespace rx
#endif // LIBANGLE_RENDERER_BUFFERIMPL_H_
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