TinySnow / RayTracerSimplified

Try to implement a simple ray tracer. Source code has detailed comments and all the evolutions with git tag./尝试实现简单光线追踪器，源码带有注释，并且演进过程打上标签。

RayTracerSimplified

Description/概述

English:

Try to implement a simple ray tracer. Source code has detailed comments and all the evolutions with git tag.

Chinese:

尝试实现简单光线追踪器，源码带有注释，并且演进过程打上标签。

Evolutions/演进

English:

Details in commit message and tag message.

Chinese:

详情请看 commit message 和 tag message。

Summary/总结

English:

This source code only implemented:

• Basics

  • Vector

  • Camera

  • Ray

• Material

  • Lambertian

  • Dielectric

  • Metal

• Geometry

  • Sphere

• Depth of field(Defocus Blur)

This source code DIDN'T implement:

• Volumetric fog

• Geometry

  • Rectangle

  • Triangle

• GPU acceleration

• Light

  • Directional Light

  • Sky Light

  • Point Light

  • Spot Light

  • Rect Light

• File input(e.g. Blender file)

• etc

Chinese:

此仓库源码只实现了：

• 基础

  • 向量

  • 光线

  • 摄像机

• 材质

  • 漫反射

  • 玻璃

  • 金属

• 几何体

  • 球体

• 景深（散焦模糊）

此仓库代码没有实现：

• 体积光

• 几何体

  • 矩形体

  • 三角体

• GPU 加速

• 光线

  • 定向光源

  • 天空光照

  • 点光源

  • 聚光源

  • 矩形光源

• 文件输入（例：Blender 文件）

• 等等

Results/成果

Final Scene/最终场景

image_final_scene_show_A

image_final_scene_show_B

image_final_scene_show_C

image_final_scene_show_D

image_final_scene_show_E

image_final_scene_show_F

Control Variables/控制变量

Main Variables/主要变量

English:

In the file name, value of variables are commented. Ray numbers per pixel and max scattering numbers per ray.

Note: Scattering includes reflection and refraction。

Chinese:

在文件名中，变量值已标注。Ray 为每像素发出的光线数量，Scatter 为每光线的最大散射次数。

注意：散射包括反射和折射。

Pictures/图片

image_final_scene_1_rays_1_scatters

image_final_scene_1_rays_2_scatters

image_final_scene_1_rays_3_scatters

image_final_scene_1_rays_4_scatters

image_final_scene_1_rays_5_scatters

image_final_scene_1_rays_10_scatters

image_final_scene_1_rays_25_scatters

image_final_scene_1_rays_50_scatters

image_final_scene_5_rays_1_scatters

image_final_scene_5_rays_2_scatters

image_final_scene_5_rays_5_scatters

image_final_scene_10_rays_5_scatters

image_final_scene_test_100_rays

image_final_scene_test_500_rays

Other Variables/其他变量

English:

Includes aperture, fov(field of view, based on height calculating), distance to focus.

Chinese:

包括 aperture(光圈大小)，fov(field of view，视野大小，基于高度计算)，distance to focus(焦距)。

Pictures/图片

image_final_scene_another_5_rays_5_scatters

image_final_scene_another_50_rays_10_scatters

Following picture based: image_final_scene_another_10_rays_10_scatters

image_final_scene_another_10_rays_10_scatters_no_aperture

image_final_scene_another_10_rays_10_scatters_normal(0.1)_aperture

image_final_scene_another_10_rays_10_scatters_big(0.5)_aperture

image_final_scene_another_10_rays_10_scatters_huge(1.0)_aperture

image_final_scene_another_10_rays_10_scatters_short(4)_focus

image_final_scene_another_10_rays_10_scatters_long(50)_focus

image_final_scene_another_10_rays_10_scatters_no_fov

image_final_scene_another_10_rays_10_scatters_tiny(5)_fov

image_final_scene_another_10_rays_10_scatters_little(10)_fov

image_final_scene_another_10_rays_10_scatters_normal(30)_fov

image_final_scene_another_10_rays_10_scatters_huge(90)_fov

Evolutions Pictures/演进过程渲染图

image_v0.1.0_hello_world（初始化图片）

image_v0.2.0_vector_model_added（添加向量模型）

image_v0.3.0_rays_and_camera_added（添加光线和摄像机类）

image_v0.4.0_multiobjects_can_be_rendered（可以渲染多个物体）

image_v0.4.1_antialiasing_added（添加抗锯齿）

image_v0.4.2_diffuse_added（添加漫反射）

image_v0.4.3_material_added（添加材质）

image_v0.4.4_gamma_corrected（进行伽马矫正）

image_v0.5.0_probability_of_refraction_added（添加折射发生概率）

image_v0.5.1_custom_wide-angle_lens_added（添加自定义镜头角度摄像机）

image_v0.5.1_depth_of_field（添加景深）

image_v0.5.2_custom_camera_position_added（摄像机可自定义位置）

image_v0.5.2_camera_position_changed_A

image_v0.5.2_camera_position_changed_B

Reference/参考

Ray Tracing in One Weekend

Ray Tracing in One Weekend (Chinese version translated by Oxine)

Unreal Engine Docs -> RayTracing (in Chinese)

Physically Based Rendering: From Theory to Implementation

License/许可证

MIT License.