{"id":21187860,"url":"https://github.com/lukasbanana/picorenderer","last_synced_at":"2026-04-07T15:33:35.150Z","repository":{"id":20951868,"uuid":"24240410","full_name":"LukasBanana/PicoRenderer","owner":"LukasBanana","description":"Low-Level, 8-bit Colored, 3D Software Renderer written in 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1.1.\n\n\nOverview\n--------\n\n- **Version**: 1.00 Alpha\n- **License**: [3-Clause BSD License](https://github.com/LukasBanana/PicoRenderer/blob/master/LICENSE.txt)\n\n\nScreenshots\n-----------\n\n\u003cp align=\"center\"\u003e\u003cimg src=\"test/media/preview_win32.png\" alt=\"test/media/preview_win32.png\"/\u003e\u003c/p\u003e\n\u003cp align=\"center\"\u003eExample scene (\u003ci\u003etest1\u003c/i\u003e on Windows 10)\u003c/p\u003e\n\n\nSupported Platforms\n-------------------\n\n- Windows (tested on Windows 10)\n- MacOS (tested on OSX El Capitan)\n- Linux (demo not available)\n\n\nWhy C and not C++?\n------------------\n\nC code is slim, highly portable, compiles fast and for a low-level software renderer one doesn't need lots of object-oriented or templated code.\n\n\nBuild\n-----\n\n- CMake 2.8 (http://www.cmake.org/)\n- C99 compliant compiler\n\n\nFine Tuning\n-----------\n\nThere are several macros which allows you to enabled or disable specific features for fine tuning.\nFor example if \"PR_FAST_MATH\" is defined, all uses of the sine function ('sinf' from the C standard library) will be replaced by \"_aprx_sin\" which implements an approximated and fast sine function (in src/rasterizer/ext_math.c).\nSee src/rasterizer/static_config.h for all these macros.\n\n\nPlugins\n-------\n\nThis project makes use of the \"stb_image\" library (see https://github.com/nothings/stb)\n\n\nGetting Started\n---------------\n\n```c\n// PicoRenderer (PR) interface example\n// (interface still in development)\n#include \u003cpico/pico.h\u003e\n\nint main()\n{\n  if (!prInit())\n    return 1;\n  \n  // Create OS dependent window, this is your task ;-)\n  PRuint scrWidth = 800, scrHeight = 600;\n  PRcontextdesc contextDesc;\n  \n  /*\n  #if defined(_WIN32)\n  \n  HWND wnd = CreateWindow(...);\n  contextDesc.window = (void*)(\u0026wnd);\n  \n  #elif defined(__APPLE__)\n  \n  NSWindow* wnd = [[NSWindow alloc] ...];\n  contextDesc.window = (void*)wnd;\n  \n  #elif defined(__linux__)\n  \n  Window wnd = XCreateWindow(...);\n  contextDesc.window = (void*)wnd;\n  \n  #endif\n  */\n  \n  // Create render context\n  PRobject context = prCreateContext(\u0026contextDesc, scrWidth, scrHeight);\n  //prMakeCurrent(context);\n  \n  // Create frame buffer\n  PRobject frameBuffer = prCreateFrameBuffer(scrWidth, scrHeight);\n  prBindFrameBuffer(frameBuffer);\n  \n  prViewport(0, 0, scrWidth, scrHeight);\n  \n  // Setup projection matrix\n  PRfloat projection[16];\n  prBuildPerspectiveProjection(\n    projection,                   // output matrix\n    (PRfloat)scrWidth/scrHeight,  // aspect ratio\n    1.0f,                         // near clipping plane\n    100.0f,                       // far clipping plane\n    74.0f * PR_DEG2RAD            // field of view (FOV) in radians (74 degrees to radians)\n  );\n  prProjectionMatrix(projection);\n  \n  // World transform\n  PRfloat worldMatrix[16];\n  PRfloat rotation = 0.0f;\n  \n  // Main loop\n  PRboolean isQuit = PR_FALSE;\n  \n  while (!isQuit)\n  { \n    // Update user input ...\n\n    // Setup world matrix\n    prLoadIdentity(worldMatrix);\n    prTranslate(worldMatrix, 0, 0, 2);\n    prRotate(worldMatrix, 0, 0, 1, rotation);\n    prWorldMatrix(worldMatrix);\n    rotation += 0.01f;\n    \n    // Clear scene (with black background)\n    prClearColor(0, 0, 0);\n    prClearFrameBuffer(\n      frameBuffer,\n      0.0f,\n      PR_COLOR_BUFFER_BIT | PR_DEPTH_BUFFER_BIT\n    );\n    \n    // Draw yellow triangle\n    prColor(255, 255, 0);\n    prBegin(PR_TRIANGLES);\n    {\n      prVertex2f(0, 1.155f);\n      prVertex2f(1, -0.577f);\n      prVertex2f(-1, -0.577f);\n    }\n    prEnd();\n\n    // Show frame buffer on render context\n    prPresent(context);\n  }\n  \n  // Release all objects\n  prDeleteFrameBuffer(frameBuffer);\n  prDeleteContext(context);\n  \n  prRelease();\n  \n  return 0;\n}\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flukasbanana%2Fpicorenderer","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flukasbanana%2Fpicorenderer","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flukasbanana%2Fpicorenderer/lists"}