• Stars
    star
    2,173
  • Rank 21,224 (Top 0.5 %)
  • Language
    C
  • License
    MIT License
  • Created over 9 years ago
  • Updated 2 months ago

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Repository Details

3D Software Renderer in 700 Lines !!

mini3d

3D软件渲染教程,并没有任何性能优化,主要向人说明如何写一个固定管线的软件渲染器。虽然主体代码只有 700行,但是麻雀虽小,五脏俱全。

README in English

特性

  • 单个文件:源代码只有一个 mini3d.c,单个文件实现所有内容,容易阅读。
  • 独立编译:没有任何第三方库依赖,没有复杂的工程目录。
  • 模型标准:标准 D3D 坐标模型,左手系加 WORLD / VIEW / PROJECTION 三矩阵
  • 实现裁剪:简单 CVV 裁剪
  • 纹理支持:最大支持 1024 x 1024 的纹理
  • 深度缓存:使用深度缓存判断图像前后
  • 透视贴图:透视纹理映射以及透视色彩填充
  • 边缘计算:精确的多边形边缘覆盖计算
  • 实现精简:渲染引擎只有 700行,模块清晰,主干突出。
  • 详细注释:主要代码详细注释

编译

演示

纹理填充:RENDER_STATE_TEXTURE

色彩填充:RENDER_STATE_COLOR

线框绘制:RENDER_STATE_WIREFRAME

增加光照和二次线性插值(朋友给 Mini3D 增加的光照效果截图)

基础作业

  • 增加背面剔除
  • 增加简单光照
  • 提供更多渲染模式
  • 实现二次线性差值的纹理读取

进阶作业

  • 推导并证明程序中用到的所有几何知识
  • 优化顶点计算性能
  • 优化 draw_scanline 性能
  • 从 BMP/TGA 文件加载纹理
  • 载入 BSP 场景并实现漫游

原理讲解

相关项目

  • RenderHelp:另外一个支持可编程渲染管线的精简软渲染器实现,详细见 介绍

欢迎捐赠

您的捐助是对该教程的最大肯定,欢迎使用支付宝手扫描上面的二维码,进行捐赠。捐赠款项将用于完善教程文档和图例,以及帮助我写出更多有意思的教程来。

欢迎关注

blog: http://www.skywind.me

zhihu: https://www.zhihu.com/people/skywind3000

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