forked from suyu/suyu
176 lines
6.5 KiB
C++
176 lines
6.5 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 <memory>
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#include <tuple>
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#include <utility>
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#include <vector>
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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_interface.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_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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struct ScreenInfo;
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namespace Core::Frontend {
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class EmuWindow;
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}
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class RasterizerOpenGL : public VideoCore::RasterizerInterface {
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public:
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explicit RasterizerOpenGL(Core::Frontend::EmuWindow& renderer);
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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 NotifyMaxwellRegisterChanged(u32 method) override;
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void FlushAll() override;
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void FlushRegion(Tegra::GPUVAddr addr, u64 size) override;
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void InvalidateRegion(Tegra::GPUVAddr addr, u64 size) override;
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void FlushAndInvalidateRegion(Tegra::GPUVAddr addr, u64 size) override;
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bool AccelerateDisplayTransfer(const void* config) override;
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bool AccelerateTextureCopy(const void* config) override;
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bool AccelerateFill(const void* config) override;
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bool AccelerateDisplay(const Tegra::FramebufferConfig& framebuffer, VAddr framebuffer_addr,
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u32 pixel_stride, ScreenInfo& screen_info) override;
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bool AccelerateDrawBatch(bool is_indexed) override;
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/// OpenGL shader generated for a given Maxwell register state
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struct MaxwellShader {
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/// OpenGL shader resource
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OGLProgram shader;
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};
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struct VertexShader {
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OGLShader shader;
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};
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struct FragmentShader {
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OGLShader shader;
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};
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/// Maximum supported size that a constbuffer can have in bytes.
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static constexpr 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& config);
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private:
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Tegra::Texture::TextureFilter mag_filter;
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Tegra::Texture::TextureFilter min_filter;
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Tegra::Texture::WrapMode wrap_u;
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Tegra::Texture::WrapMode wrap_v;
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GLvec4 border_color;
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};
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/// Configures the color and depth framebuffer states and returns the dirty <Color, Depth>
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/// surfaces if writing was enabled.
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std::pair<Surface, Surface> ConfigureFramebuffers(bool using_color_fb, bool using_depth_fb);
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/// Binds the framebuffer color and depth surface
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void BindFramebufferSurfaces(const Surface& color_surface, const Surface& depth_surface,
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bool has_stencil);
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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 program The OpenGL program 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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* @param entries Vector describing the buffers that are actually used in the guest shader.
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* @returns The next available bindpoint for use in the next shader stage.
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*/
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std::tuple<u8*, GLintptr, u32> SetupConstBuffers(
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u8* buffer_ptr, GLintptr buffer_offset, Tegra::Engines::Maxwell3D::Regs::ShaderStage stage,
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GLuint program, u32 current_bindpoint,
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const std::vector<GLShader::ConstBufferEntry>& entries);
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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 program The OpenGL program 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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* @param entries Vector describing the textures that are actually used in the guest shader.
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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, GLuint program,
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u32 current_unit, const std::vector<GLShader::SamplerEntry>& entries);
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/// Syncs the viewport to match the guest state
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void SyncViewport(const MathUtil::Rectangle<u32>& surfaces_rect);
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/// Syncs the clip enabled status to match the guest state
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void SyncClipEnabled();
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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 depth scale to match the guest state
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void SyncDepthScale();
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/// Syncs the depth offset to match the guest state
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void SyncDepthOffset();
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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 blend state to match the guest state
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void SyncBlendState();
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bool has_ARB_direct_state_access = false;
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bool has_ARB_separate_shader_objects = false;
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bool has_ARB_vertex_attrib_binding = false;
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OpenGLState state;
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RasterizerCacheOpenGL res_cache;
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Core::Frontend::EmuWindow& emu_window;
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std::unique_ptr<GLShader::ProgramManager> shader_program_manager;
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OGLVertexArray sw_vao;
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OGLVertexArray hw_vao;
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std::array<SamplerInfo, GLShader::NumTextureSamplers> texture_samplers;
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static constexpr size_t STREAM_BUFFER_SIZE = 128 * 1024 * 1024;
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OGLStreamBuffer stream_buffer;
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OGLBuffer uniform_buffer;
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OGLFramebuffer framebuffer;
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GLint uniform_buffer_alignment;
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size_t CalculateVertexArraysSize() const;
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std::pair<u8*, GLintptr> SetupVertexArrays(u8* array_ptr, GLintptr buffer_offset);
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std::pair<u8*, GLintptr> SetupShaders(u8* buffer_ptr, GLintptr buffer_offset);
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std::pair<u8*, GLintptr> AlignBuffer(u8* buffer_ptr, GLintptr buffer_offset, size_t alignment);
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enum class AccelDraw { Disabled, Arrays, Indexed };
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AccelDraw accelerate_draw = AccelDraw::Disabled;
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};
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