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https://github.com/RGBCube/serenity
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c19632128c
Texture coordinate generation is the concept of automatically generating vertex texture coordinates instead of using the provided coordinates (i.e. `glTexCoord`). This commit implements support for: * The `GL_TEXTURE_GEN_Q/R/S/T` capabilities * The `GL_OBJECT_LINEAR`, `GL_EYE_LINEAR`, `GL_SPHERE_MAP`, `GL_REFLECTION_MAP` and `GL_NORMAL_MAP` modes * Object and eye plane coefficients (write-only at the moment) This changeset allows Tux Racer to render its terrain :^)
107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
/*
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* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
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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/OwnPtr.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Matrix3x3.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/Clipper.h>
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#include <LibSoftGPU/DepthBuffer.h>
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#include <LibSoftGPU/DeviceInfo.h>
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#include <LibSoftGPU/Enums.h>
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#include <LibSoftGPU/Image.h>
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#include <LibSoftGPU/ImageFormat.h>
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#include <LibSoftGPU/Sampler.h>
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#include <LibSoftGPU/Triangle.h>
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#include <LibSoftGPU/Vertex.h>
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namespace SoftGPU {
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struct TexCoordGenerationConfig {
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TexCoordGenerationMode mode { TexCoordGenerationMode::EyeLinear };
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FloatVector4 coefficients {};
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};
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struct RasterizerOptions {
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bool shade_smooth { true };
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bool enable_depth_test { false };
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bool enable_depth_write { true };
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bool enable_alpha_test { false };
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AlphaTestFunction alpha_test_func { AlphaTestFunction::Always };
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float alpha_test_ref_value { 0 };
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bool enable_blending { false };
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BlendFactor blend_source_factor { BlendFactor::One };
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BlendFactor blend_destination_factor { BlendFactor::One };
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u32 color_mask { 0xffffffff };
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float depth_min { 0.f };
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float depth_max { 1.f };
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DepthTestFunction depth_func { DepthTestFunction::Less };
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PolygonMode polygon_mode { PolygonMode::Fill };
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FloatVector4 fog_color { 0.0f, 0.0f, 0.0f, 0.0f };
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float fog_density { 1.0f };
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FogMode fog_mode { FogMode::Exp };
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bool fog_enabled { false };
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float fog_start { 0.0f };
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float fog_end { 1.0f };
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bool scissor_enabled { false };
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bool normalization_enabled { false };
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Gfx::IntRect scissor_box;
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bool enable_color_write { true };
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float depth_offset_factor { 0 };
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float depth_offset_constant { 0 };
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bool enable_culling { false };
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WindingOrder front_face { WindingOrder::CounterClockwise };
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bool cull_back { true };
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bool cull_front { false };
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u8 texcoord_generation_enabled_coordinates { TexCoordGenerationCoordinate::None };
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Array<TexCoordGenerationConfig, 4> texcoord_generation_config {};
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};
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inline static constexpr size_t const num_samplers = 32;
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class Device final {
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public:
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Device(const Gfx::IntSize& min_size);
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DeviceInfo info() const;
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void draw_primitives(PrimitiveType, FloatMatrix4x4 const& model_view_transform, FloatMatrix3x3 const& normal_transform, FloatMatrix4x4 const& projection_transform, FloatMatrix4x4 const& texture_transform, Vector<Vertex> const& vertices, Vector<size_t> const& enabled_texture_units);
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void resize(const Gfx::IntSize& min_size);
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void clear_color(const FloatVector4&);
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void clear_depth(float);
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void blit(Gfx::Bitmap const&, int x, int y);
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void blit_to(Gfx::Bitmap&);
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void wait_for_all_threads() const;
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void set_options(const RasterizerOptions&);
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RasterizerOptions options() const { return m_options; }
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Gfx::RGBA32 get_backbuffer_pixel(int x, int y);
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float get_depthbuffer_value(int x, int y);
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NonnullRefPtr<Image> create_image(ImageFormat, unsigned width, unsigned height, unsigned depth, unsigned levels, unsigned layers);
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void set_sampler_config(unsigned, SamplerConfig const&);
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private:
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void submit_triangle(Triangle const& triangle, Vector<size_t> const& enabled_texture_units);
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private:
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RefPtr<Gfx::Bitmap> m_render_target;
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OwnPtr<DepthBuffer> m_depth_buffer;
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RasterizerOptions m_options;
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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<Vertex> m_clipped_vertices;
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Array<Sampler, num_samplers> m_samplers;
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};
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}
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