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// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <unordered_map>
#include <glad/glad.h>
#include "common/assert.h"
#include "common/common_types.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/rasterizer_cache.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
namespace OpenGL {
namespace GLShader {
class GlobalMemoryEntry;
} // namespace GLShader
class RasterizerOpenGL;
class CachedGlobalRegion;
using GlobalRegion = std::shared_ptr<CachedGlobalRegion>;
class CachedGlobalRegion final : public RasterizerCacheObject {
public:
explicit CachedGlobalRegion(VAddr cpu_addr, u32 size, u8* host_ptr);
VAddr GetCpuAddr() const override {
return cpu_addr;
}
std::size_t GetSizeInBytes() const override {
return size;
}
/// Gets the GL program handle for the buffer
GLuint GetBufferHandle() const {
return buffer.handle;
}
/// Reloads the global region from guest memory
void Reload(u32 size_);
// TODO(Rodrigo): When global memory is written (STG), implement flushing
void Flush() override {
UNIMPLEMENTED();
}
private:
VAddr cpu_addr{};
u32 size{};
OGLBuffer buffer;
};
class GlobalRegionCacheOpenGL final : public RasterizerCache<GlobalRegion> {
public:
explicit GlobalRegionCacheOpenGL(RasterizerOpenGL& rasterizer);
/// Gets the current specified shader stage program
GlobalRegion GetGlobalRegion(const GLShader::GlobalMemoryEntry& descriptor,
Tegra::Engines::Maxwell3D::Regs::ShaderStage stage);
private:
GlobalRegion TryGetReservedGlobalRegion(CacheAddr addr, u32 size) const;
GlobalRegion GetUncachedGlobalRegion(GPUVAddr addr, u32 size, u8* host_ptr);
void ReserveGlobalRegion(GlobalRegion region);
std::unordered_map<CacheAddr, GlobalRegion> reserve;
};
} // namespace OpenGL
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