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eb7c3d16fb
A GPU (driver) is now responsible for reading and writing pixels from and to user data. The client (LibGL) is responsible for specifying how the user data must be interpreted or written to. This allows us to centralize all pixel format conversion in one class, `LibSoftGPU::PixelConverter`. For both the input and output image, it takes a specification containing the image dimensions, the pixel type and the selection (basically a clipping rect), and converts the pixels from the input image to the output image. Effectively this means we now support almost all OpenGL 1.5 formats, and all custom logic has disappeared from: - `glDrawPixels` - `glReadPixels` - `glTexImage2D` - `glTexSubImage2D` The new logic is still unoptimized, but on my machine I experienced no noticeable slowdown. :^)
118 lines
5.1 KiB
C++
118 lines
5.1 KiB
C++
/*
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* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
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* Copyright (c) 2022, Jelle Raaijmakers <jelle@gmta.nl>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Array.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/RefPtr.h>
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#include <AK/Vector.h>
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#include <LibGPU/Device.h>
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#include <LibGPU/DeviceInfo.h>
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#include <LibGPU/Enums.h>
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#include <LibGPU/Image.h>
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#include <LibGPU/ImageFormat.h>
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#include <LibGPU/Light.h>
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#include <LibGPU/LightModelParameters.h>
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#include <LibGPU/Material.h>
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#include <LibGPU/RasterPosition.h>
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#include <LibGPU/RasterizerOptions.h>
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#include <LibGPU/SamplerConfig.h>
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#include <LibGPU/StencilConfiguration.h>
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#include <LibGPU/TexCoordGenerationConfig.h>
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#include <LibGPU/Vertex.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Matrix4x4.h>
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#include <LibGfx/Rect.h>
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#include <LibGfx/Vector4.h>
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#include <LibSoftGPU/AlphaBlendFactors.h>
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#include <LibSoftGPU/Buffer/FrameBuffer.h>
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#include <LibSoftGPU/Buffer/Typed2DBuffer.h>
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#include <LibSoftGPU/Clipper.h>
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#include <LibSoftGPU/Config.h>
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#include <LibSoftGPU/Sampler.h>
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#include <LibSoftGPU/Triangle.h>
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namespace SoftGPU {
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struct PixelQuad;
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class Device final : public GPU::Device {
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public:
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Device(Gfx::IntSize const& min_size);
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virtual GPU::DeviceInfo info() const override;
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virtual void draw_primitives(GPU::PrimitiveType, FloatMatrix4x4 const& model_view_transform, FloatMatrix4x4 const& projection_transform, FloatMatrix4x4 const& texture_transform, Vector<GPU::Vertex>& vertices, Vector<size_t> const& enabled_texture_units) override;
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virtual void resize(Gfx::IntSize const& min_size) override;
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virtual void clear_color(FloatVector4 const&) override;
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virtual void clear_depth(GPU::DepthType) override;
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virtual void clear_stencil(GPU::StencilType) override;
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virtual void blit_from_color_buffer(void*, Vector2<i32> offset, GPU::ImageDataLayout const&) override;
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virtual void blit_from_depth_buffer(void*, Vector2<i32> offset, GPU::ImageDataLayout const&) override;
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virtual void blit_color_buffer_to(Gfx::Bitmap& target) override;
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virtual void blit_to_color_buffer_at_raster_position(void const*, GPU::ImageDataLayout const&) override;
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virtual void blit_to_depth_buffer_at_raster_position(void const*, GPU::ImageDataLayout const&) override;
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virtual void set_options(GPU::RasterizerOptions const&) override;
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virtual void set_light_model_params(GPU::LightModelParameters const&) override;
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virtual GPU::RasterizerOptions options() const override { return m_options; }
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virtual GPU::LightModelParameters light_model() const override { return m_lighting_model; }
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virtual NonnullRefPtr<GPU::Image> create_image(GPU::PixelType const&, u32 width, u32 height, u32 depth, u32 levels, u32 layers) override;
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virtual void set_sampler_config(unsigned, GPU::SamplerConfig const&) override;
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virtual void set_light_state(unsigned, GPU::Light const&) override;
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virtual void set_material_state(GPU::Face, GPU::Material const&) override;
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virtual void set_stencil_configuration(GPU::Face, GPU::StencilConfiguration const&) override;
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virtual void set_clip_planes(Vector<FloatVector4> const&) override;
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virtual GPU::RasterPosition raster_position() const override { return m_raster_position; }
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virtual void set_raster_position(GPU::RasterPosition const& raster_position) override;
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virtual void set_raster_position(FloatVector4 const& position, FloatMatrix4x4 const& model_view_transform, FloatMatrix4x4 const& projection_transform) override;
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private:
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void calculate_vertex_lighting(GPU::Vertex& vertex) const;
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void draw_statistics_overlay(Gfx::Bitmap&);
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Gfx::IntRect get_rasterization_rect_of_size(Gfx::IntSize size) const;
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GPU::ImageDataLayout color_buffer_data_layout(Vector2<u32> size, Vector2<i32> offset);
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GPU::ImageDataLayout depth_buffer_data_layout(Vector2<u32> size, Vector2<i32> offset);
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template<typename CB1, typename CB2, typename CB3>
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void rasterize(Gfx::IntRect& render_bounds, CB1 set_coverage_mask, CB2 set_quad_depth, CB3 set_quad_attributes);
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void rasterize_line_aliased(GPU::Vertex&, GPU::Vertex&);
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void rasterize_line_antialiased(GPU::Vertex&, GPU::Vertex&);
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void rasterize_line(GPU::Vertex&, GPU::Vertex&);
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void rasterize_point_aliased(GPU::Vertex&);
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void rasterize_point_antialiased(GPU::Vertex&);
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void rasterize_point(GPU::Vertex&);
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void rasterize_triangle(Triangle&);
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void setup_blend_factors();
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void shade_fragments(PixelQuad&);
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void test_alpha(PixelQuad&);
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RefPtr<FrameBuffer<GPU::ColorType, GPU::DepthType, GPU::StencilType>> m_frame_buffer {};
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GPU::RasterizerOptions m_options;
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GPU::LightModelParameters m_lighting_model;
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Clipper m_clipper;
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Vector<Triangle> m_triangle_list;
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Vector<Triangle> m_processed_triangles;
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Vector<GPU::Vertex> m_clipped_vertices;
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Array<Sampler, GPU::NUM_SAMPLERS> m_samplers;
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Vector<size_t> m_enabled_texture_units;
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AlphaBlendFactors m_alpha_blend_factors;
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Array<GPU::Light, NUM_LIGHTS> m_lights;
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Array<GPU::Material, 2u> m_materials;
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GPU::RasterPosition m_raster_position;
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Vector<FloatVector4> m_clip_planes;
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Array<GPU::StencilConfiguration, 2u> m_stencil_configuration;
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};
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}
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