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All Projects → skywind3000 → Mini3d

skywind3000 / Mini3d

Licence: mit
3D Software Renderer in 700 Lines !!

Programming Languages

c
50402 projects - #5 most used programming language

Labels

openglgraphics3dgame-enginepicturerenderer

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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。

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

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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