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gl_framebuffer_cache: Use a hashed struct to cache framebuffers

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This commit is contained in:
ReinUsesLisp
2019-05-11 03:15:49 -03:00
parent d65a4af895
commit 9098905dd1
6 changed files with 148 additions and 62 deletions
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2
src/video_core/CMakeLists.txt
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@@ -41,6 +41,8 @@ add_library(video_core STATIC
renderer_opengl/gl_buffer_cache.h
renderer_opengl/gl_device.cpp
renderer_opengl/gl_device.h
renderer_opengl/gl_framebuffer_cache.cpp
renderer_opengl/gl_framebuffer_cache.h
renderer_opengl/gl_global_cache.cpp
renderer_opengl/gl_global_cache.h
renderer_opengl/gl_rasterizer.cpp

73
src/video_core/renderer_opengl/gl_framebuffer_cache.cpp Normal file
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@@ -0,0 +1,73 @@
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <tuple>
#include "common/cityhash.h"
#include "common/scope_exit.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/renderer_opengl/gl_framebuffer_cache.h"
#include "video_core/renderer_opengl/gl_state.h"
namespace OpenGL {
using Maxwell = Tegra::Engines::Maxwell3D::Regs;
FramebufferCacheOpenGL::FramebufferCacheOpenGL() = default;
FramebufferCacheOpenGL::~FramebufferCacheOpenGL() = default;
GLuint FramebufferCacheOpenGL::GetFramebuffer(const FramebufferCacheKey& key) {
const auto [entry, is_cache_miss] = cache.try_emplace(key);
auto& framebuffer{entry->second};
if (is_cache_miss) {
framebuffer = CreateFramebuffer(key);
}
return framebuffer.handle;
}
OGLFramebuffer FramebufferCacheOpenGL::CreateFramebuffer(const FramebufferCacheKey& key) {
OGLFramebuffer framebuffer;
framebuffer.Create();
// TODO(Rodrigo): Use DSA here after Nvidia fixes their framebuffer DSA bugs.
local_state.draw.draw_framebuffer = framebuffer.handle;
local_state.ApplyFramebufferState();
if (key.is_single_buffer) {
if (key.color_attachments[0] != GL_NONE && key.colors[0]) {
key.colors[0]->Attach(key.color_attachments[0]);
glDrawBuffer(key.color_attachments[0]);
} else {
glDrawBuffer(GL_NONE);
}
} else {
for (std::size_t index = 0; index < Maxwell::NumRenderTargets; ++index) {
if (key.colors[index]) {
key.colors[index]->Attach(GL_COLOR_ATTACHMENT0 + static_cast<GLenum>(index));
}
}
glDrawBuffers(key.colors_count, key.color_attachments.data());
}
if (key.zeta) {
key.zeta->Attach(key.stencil_enable ? GL_DEPTH_STENCIL_ATTACHMENT : GL_DEPTH_ATTACHMENT);
}
return framebuffer;
}
std::size_t FramebufferCacheKey::Hash() const {
static_assert(sizeof(*this) % sizeof(u64) == 0, "Unaligned struct");
return static_cast<std::size_t>(
Common::CityHash64(reinterpret_cast<const char*>(this), sizeof(*this)));
}
bool FramebufferCacheKey::operator==(const FramebufferCacheKey& rhs) const {
return std::tie(is_single_buffer, stencil_enable, colors_count, color_attachments, colors,
zeta) == std::tie(rhs.is_single_buffer, rhs.stencil_enable, rhs.colors_count,
rhs.color_attachments, rhs.colors, rhs.zeta);
}
} // namespace OpenGL

68
src/video_core/renderer_opengl/gl_framebuffer_cache.h Normal file
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@@ -0,0 +1,68 @@
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <cstddef>
#include <unordered_map>
#include <glad/glad.h>
#include "common/common_types.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
#include "video_core/renderer_opengl/gl_state.h"
#include "video_core/renderer_opengl/gl_texture_cache.h"
namespace OpenGL {
struct alignas(sizeof(u64)) FramebufferCacheKey {
bool is_single_buffer = false;
bool stencil_enable = false;
u16 colors_count = 0;
std::array<GLenum, Tegra::Engines::Maxwell3D::Regs::NumRenderTargets> color_attachments{};
std::array<View, Tegra::Engines::Maxwell3D::Regs::NumRenderTargets> colors;
View zeta;
std::size_t Hash() const;
bool operator==(const FramebufferCacheKey& rhs) const;
bool operator!=(const FramebufferCacheKey& rhs) const {
return !operator==(rhs);
}
};
} // namespace OpenGL
namespace std {
template <>
struct hash<OpenGL::FramebufferCacheKey> {
std::size_t operator()(const OpenGL::FramebufferCacheKey& k) const noexcept {
return k.Hash();
}
};
} // namespace std
namespace OpenGL {
class FramebufferCacheOpenGL {
public:
FramebufferCacheOpenGL();
~FramebufferCacheOpenGL();
GLuint GetFramebuffer(const FramebufferCacheKey& key);
private:
OGLFramebuffer CreateFramebuffer(const FramebufferCacheKey& key);
OpenGLState local_state;
std::unordered_map<FramebufferCacheKey, OGLFramebuffer> cache;
};
} // namespace OpenGL

59
src/video_core/renderer_opengl/gl_rasterizer.cpp
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@@ -78,26 +78,6 @@ struct DrawParameters {
}
};
struct FramebufferCacheKey {
bool is_single_buffer = false;
bool stencil_enable = false;
std::array<GLenum, Maxwell::NumRenderTargets> color_attachments{};
std::array<View, Tegra::Engines::Maxwell3D::Regs::NumRenderTargets> colors{};
u32 colors_count = 0;
View zeta = nullptr;
auto Tie() const {
return std::tie(is_single_buffer, stencil_enable, color_attachments, colors, colors_count,
zeta);
}
bool operator<(const FramebufferCacheKey& rhs) const {
return Tie() < rhs.Tie();
}
};
RasterizerOpenGL::RasterizerOpenGL(Core::System& system, Core::Frontend::EmuWindow& emu_window,
ScreenInfo& info)
: texture_cache{system, *this}, shader_cache{*this, system, emu_window, device},
@@ -355,42 +335,6 @@ void RasterizerOpenGL::SetupShaders(GLenum primitive_mode) {
gpu.dirty_flags.shaders = false;
}
void RasterizerOpenGL::SetupCachedFramebuffer(const FramebufferCacheKey& fbkey,
OpenGLState& current_state) {
const auto [entry, is_cache_miss] = framebuffer_cache.try_emplace(fbkey);
auto& framebuffer = entry->second;
if (is_cache_miss)
framebuffer.Create();
current_state.draw.draw_framebuffer = framebuffer.handle;
current_state.ApplyFramebufferState();
if (!is_cache_miss)
return;
if (fbkey.is_single_buffer) {
if (fbkey.color_attachments[0] != GL_NONE && fbkey.colors[0]) {
fbkey.colors[0]->Attach(fbkey.color_attachments[0]);
glDrawBuffer(fbkey.color_attachments[0]);
} else {
glDrawBuffer(GL_NONE);
}
} else {
for (std::size_t index = 0; index < Maxwell::NumRenderTargets; ++index) {
if (fbkey.colors[index]) {
fbkey.colors[index]->Attach(GL_COLOR_ATTACHMENT0 + static_cast<GLenum>(index));
}
}
glDrawBuffers(fbkey.colors_count, fbkey.color_attachments.data());
}
if (fbkey.zeta) {
fbkey.zeta->Attach(fbkey.stencil_enable ? GL_DEPTH_STENCIL_ATTACHMENT
: GL_DEPTH_ATTACHMENT);
}
}
std::size_t RasterizerOpenGL::CalculateVertexArraysSize() const {
const auto& regs = system.GPU().Maxwell3D().regs;
@@ -556,7 +500,7 @@ std::pair<bool, bool> RasterizerOpenGL::ConfigureFramebuffers(
depth_surface->GetSurfaceParams().type == SurfaceType::DepthStencil;
}
SetupCachedFramebuffer(fbkey, current_state);
current_state.draw.draw_framebuffer = framebuffer_cache.GetFramebuffer(fbkey);
SyncViewport(current_state);
return current_depth_stencil_usage = {static_cast<bool>(depth_surface), fbkey.stencil_enable};
@@ -638,6 +582,7 @@ void RasterizerOpenGL::Clear() {
clear_state.ApplyDepth();
clear_state.ApplyStencilTest();
clear_state.ApplyViewport();
clear_state.ApplyFramebufferState();
if (use_color) {
glClearBufferfv(GL_COLOR, regs.clear_buffers.RT, regs.clear_color);

6
src/video_core/renderer_opengl/gl_rasterizer.h
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@@ -23,6 +23,7 @@
#include "video_core/rasterizer_interface.h"
#include "video_core/renderer_opengl/gl_buffer_cache.h"
#include "video_core/renderer_opengl/gl_device.h"
#include "video_core/renderer_opengl/gl_framebuffer_cache.h"
#include "video_core/renderer_opengl/gl_global_cache.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
#include "video_core/renderer_opengl/gl_sampler_cache.h"
@@ -49,7 +50,6 @@ namespace OpenGL {
struct ScreenInfo;
struct DrawParameters;
struct FramebufferCacheKey;
class RasterizerOpenGL : public VideoCore::RasterizerInterface {
public:
@@ -193,6 +193,7 @@ private:
ShaderCacheOpenGL shader_cache;
GlobalRegionCacheOpenGL global_cache;
SamplerCacheOpenGL sampler_cache;
FramebufferCacheOpenGL framebuffer_cache;
Core::System& system;
ScreenInfo& screen_info;
@@ -203,7 +204,6 @@ private:
OGLVertexArray>
vertex_array_cache;
std::map<FramebufferCacheKey, OGLFramebuffer> framebuffer_cache;
FramebufferConfigState current_framebuffer_config_state;
std::pair<bool, bool> current_depth_stencil_usage{};
@@ -226,8 +226,6 @@ private:
void SetupShaders(GLenum primitive_mode);
void SetupCachedFramebuffer(const FramebufferCacheKey& fbkey, OpenGLState& current_state);
enum class AccelDraw { Disabled, Arrays, Indexed };
AccelDraw accelerate_draw = AccelDraw::Disabled;

2
src/video_core/texture_cache/texture_cache.h
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@@ -133,7 +133,7 @@ public:
return {};
}
if (regs.color_mask[index].raw != 0) {
if (regs.color_mask[index].raw == 0) {
SetEmptyColorBuffer(index);
return {};
}