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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GPU_IPC_HOST_GPU_MEMORY_BUFFER_SUPPORT_H_
#define GPU_IPC_HOST_GPU_MEMORY_BUFFER_SUPPORT_H_
#include <functional>
#include <unordered_set>
#include <utility>
#include <vector>
#include "base/hash/hash.h"
#include "ui/gfx/buffer_types.h"
namespace gpu {
using GpuMemoryBufferConfigurationKey = gfx::BufferUsageAndFormat;
using GpuMemoryBufferConfigurationSet =
std::unordered_set<GpuMemoryBufferConfigurationKey>;
} // namespace gpu
namespace std {
template <>
struct hash<gpu::GpuMemoryBufferConfigurationKey> {
size_t operator()(const gpu::GpuMemoryBufferConfigurationKey& key) const {
return base::HashInts(static_cast<int>(key.format),
static_cast<int>(key.usage));
}
};
} // namespace std
namespace gpu {
class GpuMemoryBufferSupport;
// Returns the set of supported configurations.
GpuMemoryBufferConfigurationSet GetNativeGpuMemoryBufferConfigurations(
GpuMemoryBufferSupport* support);
// Returns true of the OpenGL target to use for the combination of format/usage
// is not GL_TEXTURE_2D but a platform specific texture target.
bool GetImageNeedsPlatformSpecificTextureTarget(gfx::BufferFormat format,
gfx::BufferUsage usage);
// Populate a list of buffer usage/format for which a per platform specific
// texture target must be used instead of GL_TEXTURE_2D.
std::vector<gfx::BufferUsageAndFormat>
CreateBufferUsageAndFormatExceptionList();
} // namespace gpu
#endif // GPU_IPC_HOST_GPU_MEMORY_BUFFER_SUPPORT_H_