forked from suyu/suyu
9390452195
gl_rasterizer: Implement a framebuffer cache
228 lines
8.4 KiB
C++
228 lines
8.4 KiB
C++
// Copyright 2015 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <cstddef>
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#include <map>
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#include <memory>
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#include <optional>
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#include <tuple>
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#include <utility>
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#include <vector>
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#include <boost/icl/interval_map.hpp>
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#include <boost/range/iterator_range.hpp>
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#include <glad/glad.h>
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#include "common/common_types.h"
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#include "video_core/engines/maxwell_3d.h"
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#include "video_core/memory_manager.h"
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#include "video_core/rasterizer_cache.h"
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#include "video_core/rasterizer_interface.h"
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#include "video_core/renderer_opengl/gl_buffer_cache.h"
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#include "video_core/renderer_opengl/gl_primitive_assembler.h"
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#include "video_core/renderer_opengl/gl_rasterizer_cache.h"
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#include "video_core/renderer_opengl/gl_resource_manager.h"
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#include "video_core/renderer_opengl/gl_shader_cache.h"
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#include "video_core/renderer_opengl/gl_shader_gen.h"
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#include "video_core/renderer_opengl/gl_shader_manager.h"
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#include "video_core/renderer_opengl/gl_state.h"
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#include "video_core/renderer_opengl/gl_stream_buffer.h"
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namespace Core::Frontend {
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class EmuWindow;
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}
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namespace OpenGL {
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struct ScreenInfo;
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struct DrawParameters;
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struct FramebufferCacheKey;
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class RasterizerOpenGL : public VideoCore::RasterizerInterface {
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public:
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explicit RasterizerOpenGL(Core::Frontend::EmuWindow& renderer, ScreenInfo& info);
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~RasterizerOpenGL() override;
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void DrawArrays() override;
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void Clear() override;
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void FlushAll() override;
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void FlushRegion(VAddr addr, u64 size) override;
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void InvalidateRegion(VAddr addr, u64 size) override;
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void FlushAndInvalidateRegion(VAddr addr, u64 size) override;
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bool AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Regs::Surface& src,
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const Tegra::Engines::Fermi2D::Regs::Surface& dst) override;
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bool AccelerateFill(const void* config) override;
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bool AccelerateDisplay(const Tegra::FramebufferConfig& config, VAddr framebuffer_addr,
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u32 pixel_stride) override;
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bool AccelerateDrawBatch(bool is_indexed) override;
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void UpdatePagesCachedCount(Tegra::GPUVAddr addr, u64 size, int delta) override;
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/// Maximum supported size that a constbuffer can have in bytes.
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static constexpr std::size_t MaxConstbufferSize = 0x10000;
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static_assert(MaxConstbufferSize % sizeof(GLvec4) == 0,
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"The maximum size of a constbuffer must be a multiple of the size of GLvec4");
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private:
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class SamplerInfo {
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public:
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OGLSampler sampler;
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/// Creates the sampler object, initializing its state so that it's in sync with the
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/// SamplerInfo struct.
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void Create();
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/// Syncs the sampler object with the config, updating any necessary state.
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void SyncWithConfig(const Tegra::Texture::TSCEntry& info);
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private:
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Tegra::Texture::TextureFilter mag_filter = Tegra::Texture::TextureFilter::Nearest;
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Tegra::Texture::TextureFilter min_filter = Tegra::Texture::TextureFilter::Nearest;
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Tegra::Texture::TextureMipmapFilter mip_filter = Tegra::Texture::TextureMipmapFilter::None;
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Tegra::Texture::WrapMode wrap_u = Tegra::Texture::WrapMode::ClampToEdge;
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Tegra::Texture::WrapMode wrap_v = Tegra::Texture::WrapMode::ClampToEdge;
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Tegra::Texture::WrapMode wrap_p = Tegra::Texture::WrapMode::ClampToEdge;
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bool uses_depth_compare = false;
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Tegra::Texture::DepthCompareFunc depth_compare_func =
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Tegra::Texture::DepthCompareFunc::Always;
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GLvec4 border_color = {};
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float min_lod = 0.0f;
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float max_lod = 16.0f;
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float lod_bias = 0.0f;
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float max_anisotropic = 1.0f;
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};
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/**
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* Configures the color and depth framebuffer states.
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* @param use_color_fb If true, configure color framebuffers.
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* @param using_depth_fb If true, configure the depth/stencil framebuffer.
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* @param preserve_contents If true, tries to preserve data from a previously used framebuffer.
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* @param single_color_target Specifies if a single color buffer target should be used.
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*/
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void ConfigureFramebuffers(OpenGLState& current_state, bool use_color_fb = true,
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bool using_depth_fb = true, bool preserve_contents = true,
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std::optional<std::size_t> single_color_target = {});
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/*
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* Configures the current constbuffers to use for the draw command.
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* @param stage The shader stage to configure buffers for.
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* @param shader The shader object that contains the specified stage.
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* @param current_bindpoint The offset at which to start counting new buffer bindpoints.
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* @returns The next available bindpoint for use in the next shader stage.
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*/
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u32 SetupConstBuffers(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage, Shader& shader,
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GLenum primitive_mode, u32 current_bindpoint);
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/*
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* Configures the current textures to use for the draw command.
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* @param stage The shader stage to configure textures for.
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* @param shader The shader object that contains the specified stage.
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* @param current_unit The offset at which to start counting unused texture units.
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* @returns The next available bindpoint for use in the next shader stage.
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*/
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u32 SetupTextures(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage, Shader& shader,
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GLenum primitive_mode, u32 current_unit);
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/// Syncs the viewport and depth range to match the guest state
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void SyncViewport(OpenGLState& current_state);
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/// Syncs the clip enabled status to match the guest state
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void SyncClipEnabled(
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const std::array<bool, Tegra::Engines::Maxwell3D::Regs::NumClipDistances>& clip_mask);
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/// Syncs the clip coefficients to match the guest state
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void SyncClipCoef();
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/// Syncs the cull mode to match the guest state
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void SyncCullMode();
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/// Syncs the primitve restart to match the guest state
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void SyncPrimitiveRestart();
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/// Syncs the depth test state to match the guest state
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void SyncDepthTestState();
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/// Syncs the stencil test state to match the guest state
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void SyncStencilTestState();
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/// Syncs the blend state to match the guest state
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void SyncBlendState();
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/// Syncs the LogicOp state to match the guest state
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void SyncLogicOpState();
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/// Syncs the the color clamp state
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void SyncFragmentColorClampState();
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/// Syncs the alpha coverage and alpha to one
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void SyncMultiSampleState();
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/// Syncs the scissor test state to match the guest state
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void SyncScissorTest(OpenGLState& current_state);
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/// Syncs the transform feedback state to match the guest state
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void SyncTransformFeedback();
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/// Syncs the point state to match the guest state
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void SyncPointState();
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/// Syncs Color Mask
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void SyncColorMask();
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/// Syncs the polygon offsets
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void SyncPolygonOffset();
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/// Check asserts for alpha testing.
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void CheckAlphaTests();
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/// Check for extension that are not strictly required
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/// but are needed for correct emulation
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void CheckExtensions();
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OpenGLState state;
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RasterizerCacheOpenGL res_cache;
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ShaderCacheOpenGL shader_cache;
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Core::Frontend::EmuWindow& emu_window;
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ScreenInfo& screen_info;
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std::unique_ptr<GLShader::ProgramManager> shader_program_manager;
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std::map<std::array<Tegra::Engines::Maxwell3D::Regs::VertexAttribute,
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Tegra::Engines::Maxwell3D::Regs::NumVertexAttributes>,
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OGLVertexArray>
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vertex_array_cache;
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std::map<FramebufferCacheKey, OGLFramebuffer> framebuffer_cache;
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std::array<SamplerInfo, Tegra::Engines::Maxwell3D::Regs::NumTextureSamplers> texture_samplers;
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static constexpr std::size_t STREAM_BUFFER_SIZE = 128 * 1024 * 1024;
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OGLBufferCache buffer_cache;
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PrimitiveAssembler primitive_assembler{buffer_cache};
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GLint uniform_buffer_alignment;
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std::size_t CalculateVertexArraysSize() const;
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std::size_t CalculateIndexBufferSize() const;
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void SetupVertexFormat();
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void SetupVertexBuffer();
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DrawParameters SetupDraw();
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void SetupShaders(GLenum primitive_mode);
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void SetupCachedFramebuffer(const FramebufferCacheKey& fbkey, OpenGLState& current_state);
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enum class AccelDraw { Disabled, Arrays, Indexed };
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AccelDraw accelerate_draw = AccelDraw::Disabled;
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using CachedPageMap = boost::icl::interval_map<u64, int>;
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CachedPageMap cached_pages;
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};
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} // namespace OpenGL
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