文件列表:

Makefile (175, 2020-09-10)
main/ (0, 2020-09-10)
main/Makefile (1395, 2020-09-10)
main/include/ (0, 2020-09-10)
main/include/color.h (1052, 2020-09-10)
main/include/config.h (421, 2020-09-10)
main/include/context.h (6976, 2020-09-10)
main/include/framebuffer.h (1973, 2020-09-10)
main/include/inputassembler.h (2480, 2020-09-10)
main/include/predef.h (590, 2020-09-10)
main/include/rasterizer.h (1633, 2020-09-10)
main/include/shader.h (2154, 2020-09-10)
main/include/swrast.h (265, 2020-09-10)
main/include/texture.h (1180, 2020-09-10)
main/include/vector.h (1985, 2020-09-10)
main/src/ (0, 2020-09-10)
main/src/context.c (4849, 2020-09-10)
main/src/framebuffer.c (949, 2020-09-10)
main/src/inputassembler.c (6740, 2020-09-10)
main/src/rasterizer.c (9211, 2020-09-10)
main/src/shader.c (4002, 2020-09-10)
main/src/texture.c (890, 2020-09-10)
test/ (0, 2020-09-10)
test/3ds.c (5548, 2020-09-10)
test/3ds.h (318, 2020-09-10)
test/Makefile (1410, 2020-09-10)
test/benchmark.c (3998, 2020-09-10)
test/subpixel.c (891, 2020-09-10)
test/teapot.3ds (63273, 2020-09-10)
test/test.c (4661, 2020-09-10)
test/window.c (2626, 2020-09-10)
test/window.h (506, 2020-09-10)

# `#` Software rasterizer Changes * moved the X11 dependend `window.h` and `window.c` to `test` * added an envelope header `swrast.h` file * renamed `libraster.a` to `libswrast.a` * added a small error message, if `a.out` can't find the `teapot.3ds` file Here is the original README: ``` About ***** To whom it may concern: this directory contains a just-for-fun software rasterizer written in C89, started on a boring holiday week when I was sick. The entire source code is released into the public domain. The rasterizer currently supports the following features: - Subpixel correct triangle rasterization - Configurable back face culling (cull by vertex winding) - Vertex buffers and index buffers - Programmable shader pipeline (shaders defined as C functions) - Default shaders implement fixed function OpenGL(R) style transform & lighting with model view & projection matrix and up to 8 independend light sources - Perspective correct interpolation of vertex attributes - Multpile texture layers with nearest neighbour sampling - Depth buffering (OpenGL(R) style comparison function) - Alpha blending - Multiple framebuffer objects (can be used for e.g. render to texture) - viewport mapping - OpenGL(R) style depth masking/mapping/clipping - Write to color channels can be flagged individually - Immediate mode rendering Rendering Pipeline ****************** _________________ Vertices are decoded from vertex and index | Input Assembler | buffers. The input assembler stage assembles |_________________| vertices to triangles and walks them through the | | rest of the pipeline. _| |_ ______\___/______ Vertices are transformed with modelview and | Vertex Shader | projection matrix. Depending on the shader used, |_________________| vertex lighting values are computed in viewspace. | | Other arbitrary values can be generated that are _| |_ later interpolated across the triangle area. ______\___/______ | Rasterization | Pixels are generated from tripples of vertices. |_________________| Vertex attributes are interpolated over the _| |_ triangle area. ______\___/______ | Depth test | The interolated depth value is compared to the |_________________| depth buffer value. Pixels are dropped if the _| |_ specified comparison opartation returns false. ______\___/______ | Fragment Shader | The interpolated vertex attributes (e.g. texture |_________________| coordinates) are used to compute a final fragment _| |_ color. ______\___/______ | Framebuffer | The final color is (optionally) alpha blended onto | blending | framebuffer. Individual color channels can be |_________________| masked out. Source code overview ******************** The directory "main" contains the main rasterizer library, currently consisting of the following files: include/config.h - Preprocessor defined limits of the rasterization pipeline include/predef.h - Forward declarations of structures include/vector.h - Helper functions for working with four component vectors include/color.h - Helper functions for working with packed four component color values include/context.h - Context structure. Encapsulates all global src/context.c state of the pipeline. include/inputassembler.h - Implementation of the input assembler stage src/inputassembler.c include/shader.h - Implementation shader stages src/shader.c include/rasterizer.h - Implementation of the rasterizer stage and src/rasterizer.c pixel merging (depth test, texturing and blending) include/texture.h - Implementation of texture objects src/texture.c include/framebuffer.h - Implementation of framebuffer objects src/framebuffer.c include/window.h - A simple window implementation. Handles a src/window.c window and blits a framebuffer The directory "test" contains testing and demo programs, currently consisting of the following files: 3ds.h - A quick & dirty 3ds loader for testing 3ds.c test.c - A small test program Compiling ********* Simply type "make" into the commandline on the top level directory. The rasterizer is compiled into a library in the directory "main" and the sample programs are compiled to binaries in the "test" directory. Type "make clean" to cleanup the directory tree. License ******* All source code in this directory is released into the public domain. I, David Oberhollenzer, will not assert any copyright claims on the documents in this directory. ```

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