1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
* Copyright (c) 2022, Jelle Raaijmakers <jelle@gmta.nl>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Array.h>
#include <AK/NonnullRefPtr.h>
#include <AK/RefPtr.h>
#include <AK/Vector.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Matrix3x3.h>
#include <LibGfx/Matrix4x4.h>
#include <LibGfx/Rect.h>
#include <LibGfx/Vector4.h>
#include <LibSoftGPU/AlphaBlendFactors.h>
#include <LibSoftGPU/Buffer/FrameBuffer.h>
#include <LibSoftGPU/Buffer/Typed2DBuffer.h>
#include <LibSoftGPU/Clipper.h>
#include <LibSoftGPU/Config.h>
#include <LibSoftGPU/DeviceInfo.h>
#include <LibSoftGPU/Enums.h>
#include <LibSoftGPU/Image.h>
#include <LibSoftGPU/ImageFormat.h>
#include <LibSoftGPU/Light/Light.h>
#include <LibSoftGPU/Light/Material.h>
#include <LibSoftGPU/Sampler.h>
#include <LibSoftGPU/Triangle.h>
#include <LibSoftGPU/Vertex.h>
namespace SoftGPU {
struct TexCoordGenerationConfig {
TexCoordGenerationMode mode { TexCoordGenerationMode::EyeLinear };
FloatVector4 coefficients {};
};
struct RasterizerOptions {
bool shade_smooth { true };
bool enable_stencil_test { false };
bool enable_depth_test { false };
bool enable_depth_write { true };
bool enable_alpha_test { false };
AlphaTestFunction alpha_test_func { AlphaTestFunction::Always };
float alpha_test_ref_value { 0 };
bool enable_blending { false };
BlendFactor blend_source_factor { BlendFactor::One };
BlendFactor blend_destination_factor { BlendFactor::One };
u32 color_mask { 0xffffffff };
float depth_min { 0.f };
float depth_max { 1.f };
DepthTestFunction depth_func { DepthTestFunction::Less };
PolygonMode polygon_mode { PolygonMode::Fill };
FloatVector4 fog_color { 0.0f, 0.0f, 0.0f, 0.0f };
float fog_density { 1.0f };
FogMode fog_mode { FogMode::Exp };
bool fog_enabled { false };
float fog_start { 0.0f };
float fog_end { 1.0f };
bool scissor_enabled { false };
bool normalization_enabled { false };
Gfx::IntRect scissor_box;
bool enable_color_write { true };
float depth_offset_factor { 0 };
float depth_offset_constant { 0 };
bool depth_offset_enabled { false };
bool enable_culling { false };
WindingOrder front_face { WindingOrder::CounterClockwise };
bool cull_back { true };
bool cull_front { false };
Array<u8, NUM_SAMPLERS> texcoord_generation_enabled_coordinates {};
Array<Array<TexCoordGenerationConfig, 4>, NUM_SAMPLERS> texcoord_generation_config {};
Gfx::IntRect viewport;
bool lighting_enabled { false };
bool color_material_enabled { false };
ColorMaterialFace color_material_face { ColorMaterialFace::FrontAndBack };
ColorMaterialMode color_material_mode { ColorMaterialMode::AmbientAndDiffuse };
};
struct LightModelParameters {
FloatVector4 scene_ambient_color { 0.2f, 0.2f, 0.2f, 1.0f };
bool viewer_at_infinity { false };
unsigned int single_color { 0x81F9 }; // This is the value of `GL_SINGLE_COLOR`. Considering we definitely don't leak gl.h stuff into here, we fix it to the gl.h macro value.
bool two_sided_lighting { false };
};
struct PixelQuad;
struct RasterPosition {
FloatVector4 window_coordinates { 0.0f, 0.0f, 0.0f, 1.0f };
float eye_coordinate_distance { 0.0f };
bool valid { true };
FloatVector4 color_rgba { 1.0f, 1.0f, 1.0f, 1.0f };
float color_index { 1.0f };
FloatVector4 texture_coordinates { 0.0f, 0.0f, 0.0f, 1.0f };
};
struct StencilConfiguration {
StencilTestFunction test_function;
StencilType reference_value;
StencilType test_mask;
StencilOperation on_stencil_test_fail;
StencilOperation on_depth_test_fail;
StencilOperation on_pass;
StencilType write_mask;
};
class Device final {
public:
Device(const Gfx::IntSize& min_size);
DeviceInfo info() const;
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);
void resize(Gfx::IntSize const& min_size);
void clear_color(FloatVector4 const&);
void clear_depth(DepthType);
void clear_stencil(StencilType);
void blit_color_buffer_to(Gfx::Bitmap& target);
void blit_to_color_buffer_at_raster_position(Gfx::Bitmap const&);
void blit_to_depth_buffer_at_raster_position(Vector<DepthType> const&, int, int);
void set_options(const RasterizerOptions&);
void set_light_model_params(const LightModelParameters&);
RasterizerOptions options() const { return m_options; }
LightModelParameters light_model() const { return m_lighting_model; }
ColorType get_color_buffer_pixel(int x, int y);
DepthType get_depthbuffer_value(int x, int y);
NonnullRefPtr<Image> create_image(ImageFormat format, unsigned width, unsigned height, unsigned depth, unsigned levels, unsigned layers);
void set_sampler_config(unsigned, SamplerConfig const&);
void set_light_state(unsigned, Light const&);
void set_material_state(Face, Material const&);
void set_stencil_configuration(Face, StencilConfiguration const&);
RasterPosition raster_position() const { return m_raster_position; }
void set_raster_position(RasterPosition const& raster_position);
void set_raster_position(FloatVector4 const& position, FloatMatrix4x4 const& model_view_transform, FloatMatrix4x4 const& projection_transform);
private:
void draw_statistics_overlay(Gfx::Bitmap&);
Gfx::IntRect raster_rect_in_target_coordinates(Gfx::IntSize size);
Gfx::IntRect window_coordinates_to_target_coordinates(Gfx::IntRect const&);
void rasterize_triangle(const Triangle& triangle);
void setup_blend_factors();
void shade_fragments(PixelQuad&);
bool test_alpha(PixelQuad&);
RefPtr<FrameBuffer<ColorType, DepthType, StencilType>> m_frame_buffer {};
RasterizerOptions m_options;
LightModelParameters m_lighting_model;
Clipper m_clipper;
Vector<Triangle> m_triangle_list;
Vector<Triangle> m_processed_triangles;
Vector<Vertex> m_clipped_vertices;
Array<Sampler, NUM_SAMPLERS> m_samplers;
Vector<size_t> m_enabled_texture_units;
AlphaBlendFactors m_alpha_blend_factors;
Array<Light, NUM_LIGHTS> m_lights;
Array<Material, 2u> m_materials;
RasterPosition m_raster_position;
Array<StencilConfiguration, 2u> m_stencil_configuration;
};
}
|
