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// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <glad/glad.h>
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "video_core/renderer_opengl/gl_global_cache.h"
#include "video_core/renderer_opengl/gl_rasterizer.h"
#include "video_core/renderer_opengl/gl_shader_decompiler.h"
#include "video_core/renderer_opengl/utils.h"
namespace OpenGL {
CachedGlobalRegion::CachedGlobalRegion(VAddr cpu_addr, u32 size, u8* host_ptr)
: cpu_addr{cpu_addr}, size{size}, RasterizerCacheObject{host_ptr} {
buffer.Create();
// Bind and unbind the buffer so it gets allocated by the driver
glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer.handle);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
LabelGLObject(GL_BUFFER, buffer.handle, cpu_addr, "GlobalMemory");
}
void CachedGlobalRegion::Reload(u32 size_) {
constexpr auto max_size = static_cast<u32>(RasterizerOpenGL::MaxGlobalMemorySize);
size = size_;
if (size > max_size) {
size = max_size;
LOG_CRITICAL(HW_GPU, "Global region size {} exceeded the expected size {}!", size_,
max_size);
}
// TODO(Rodrigo): Get rid of Memory::GetPointer with a staging buffer
glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer.handle);
glBufferData(GL_SHADER_STORAGE_BUFFER, size, GetHostPtr(), GL_DYNAMIC_DRAW);
}
GlobalRegion GlobalRegionCacheOpenGL::TryGetReservedGlobalRegion(CacheAddr addr, u32 size) const {
const auto search{reserve.find(addr)};
if (search == reserve.end()) {
return {};
}
return search->second;
}
GlobalRegion GlobalRegionCacheOpenGL::GetUncachedGlobalRegion(Tegra::GPUVAddr addr, u32 size,
u8* host_ptr) {
GlobalRegion region{TryGetReservedGlobalRegion(ToCacheAddr(host_ptr), size)};
if (!region) {
// No reserved surface available, create a new one and reserve it
auto& memory_manager{Core::System::GetInstance().GPU().MemoryManager()};
const auto cpu_addr = *memory_manager.GpuToCpuAddress(addr);
region = std::make_shared<CachedGlobalRegion>(cpu_addr, size, host_ptr);
ReserveGlobalRegion(region);
}
region->Reload(size);
return region;
}
void GlobalRegionCacheOpenGL::ReserveGlobalRegion(GlobalRegion region) {
reserve.insert_or_assign(region->GetCacheAddr(), std::move(region));
}
GlobalRegionCacheOpenGL::GlobalRegionCacheOpenGL(RasterizerOpenGL& rasterizer)
: RasterizerCache{rasterizer} {}
GlobalRegion GlobalRegionCacheOpenGL::GetGlobalRegion(
const GLShader::GlobalMemoryEntry& global_region,
Tegra::Engines::Maxwell3D::Regs::ShaderStage stage) {
auto& gpu{Core::System::GetInstance().GPU()};
auto& memory_manager{gpu.MemoryManager()};
const auto cbufs{gpu.Maxwell3D().state.shader_stages[static_cast<u64>(stage)]};
const auto addr{cbufs.const_buffers[global_region.GetCbufIndex()].address +
global_region.GetCbufOffset()};
const auto actual_addr{memory_manager.Read64(addr)};
const auto size{memory_manager.Read32(addr + 8)};
// Look up global region in the cache based on address
const auto& host_ptr{memory_manager.GetPointer(actual_addr)};
GlobalRegion region{TryGet(host_ptr)};
if (!region) {
// No global region found - create a new one
region = GetUncachedGlobalRegion(actual_addr, size, host_ptr);
Register(region);
}
return region;
}
} // namespace OpenGL
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