docs/sourcetree.html

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  10 <div class="header">
  11   <h1>The Mesa 3D Graphics Library</h1>
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  16
  17 <h1>Mesa source code tree overview</h1>
  18
  19 <p>
  20 This is a brief summary of Mesa's directory tree and what's contained in
  21 each directory.
  22 </p>
  23
  24
  25 <ul>
  26 <li><b>docs</b> - Documentation
  27 <li><b>include</b> - Public OpenGL header files
  28 <li><b>src</b>
  29   <ul>
  30   <li><b>egl</b> - EGL library sources
  31     <ul>
  32     <li><b>docs</b> - EGL documentation
  33     <li><b>drivers</b> - EGL drivers
  34     <li><b>main</b> - main EGL library implementation.  This is where all
  35         the EGL API functions are implemented, like eglCreateContext().
  36     </ul>
  37   <li><b>glsl</b> - the GLSL compiler
  38   <li><b>mapi</b> - Mesa APIs
  39     <li><b>glapi</b> - OpenGL API dispatch layer.  This is where all the
  40         GL entrypoints like glClear, glBegin, etc. are generated, as well as
  41         the GL dispatch table.  All GL function calls jump through the
  42         dispatch table to functions found in main/.
  43   <li><b>mesa</b> - Main Mesa sources
  44     <ul>
  45     <li><b>main</b> - The core Mesa code (mainly state management)
  46     <li><b>drivers</b> - Mesa drivers (not used with Gallium)
  47         <ul>
  48         <li><b>common</b> - code which may be shared by all drivers
  49         <li><b>dri</b> - Direct Rendering Infrastructure drivers
  50            <ul>
  51            <li><b>common</b> - code shared by all DRI drivers
  52            <li><b>i915</b> - driver for Intel i915/i945
  53            <li><b>i965</b> - driver for Intel i965
  54            <li><b>radeon</b> - driver for ATI R100
  55            <li><b>r200</b> - driver for ATI R200
  56            <li>XXX more
  57            </ul>
  58         <li><b>x11</b> - Xlib-based software driver
  59         <li><b>osmesa</b> - off-screen software driver
  60         <li>XXX more
  61         </ul>
  62     <li><b>math</b> - vertex array translation and transformation code
  63         (not used with Gallium)
  64     <li><b>program</b> - Vertex/fragment shader and GLSL compiler code
  65     <li><b>sparc</b> - Assembly code/optimizations for SPARC systems
  66         (not used with Gallium)
  67     <li><b>state_tracker</b> - State tracker / driver for Gallium.  This
  68         is basically a Mesa device driver that speaks to Gallium.  This
  69         directory may be moved to src/mesa/drivers/gallium at some point.
  70     <li><b>swrast</b> - Software rasterization module.  For drawing points,
  71         lines, triangles, bitmaps, images, etc. in software.
  72         (not used with Gallium)
  73     <li><b>swrast_setup</b> - Software primitive setup.  Does things like
  74         polygon culling, glPolygonMode, polygon offset, etc.
  75         (not used with Gallium)
  76     <li><b>tnl</b> - Software vertex Transformation 'n Lighting.
  77         (not used with Gallium)
  78     <li><b>tnl_dd</b> - TNL code for device drivers.
  79         (not used with Gallium)
  80     <li><b>vbo</b> - Vertex Buffer Object code.  All drawing with
  81         glBegin/glEnd, glDrawArrays, display lists, etc. goes through this
  82         module.  The results is a well-defined set of vertex arrays which
  83         are passed to the device driver (or tnl module) for rendering.
  84     <li><b>x86</b> - Assembly code/optimizations for 32-bit x86 systems
  85         (not used with Gallium)
  86     <li><b>x86-64</b> - Assembly code/optimizations for 64-bit x86 systems
  87         (not used with Gallium)
  88     </ul>
  89   <li><b>gallium</b> - Gallium3D source code
  90     <ul>
  91     <li><b>include</b> - Gallium3D header files which define the Gallium3D
  92         interfaces
  93     <li><b>drivers</b> - Gallium3D device drivers
  94       <ul>
  95       <li><b>i915</b> - Driver for Intel i915/i945.
  96       <li><b>llvmpipe</b> - Software driver using LLVM for runtime code generation.
  97       <li><b>nv*</b> - Drivers for NVIDIA GPUs.
  98       <li><b>radeonsi</b> - Driver for AMD Southern Island.
  99       <li><b>r300</b> - Driver for ATI R300 - R500.
 100       <li><b>r600</b> - Driver for ATI/AMD R600 - Northern Island.
 101       <li><b>softpipe</b> - Software reference driver.
 102       <li><b>svga</b> - Driver for VMware's SVGA virtual GPU.
 103       <li><b>trace</b> - Driver for tracing Gallium calls.
 104       <li>XXX more
 105       </ul>
 106     <li><b>auxiliary</b> - Gallium support code
 107       <ul>
 108       <li><b>draw</b> - Software vertex processing and primitive assembly
 109           module.  This includes vertex program execution, clipping, culling
 110           and optional stages for drawing wide lines, stippled lines,
 111           polygon stippling, two-sided lighting, etc.
 112           Intended for use by drivers for hardware that does not have
 113           vertex shaders.
 114           Geometry shaders will also be implemented in this module.
 115       <li><b>cso_cache</b> - Constant State Objects Cache.  Used to filter out
 116           redundant state changes between state trackers and drivers.
 117       <li><b>gallivm</b> - LLVM module for Gallium.  For LLVM-based
 118            compilation, optimization and code generation for TGSI shaders.
 119            Incomplete.
 120       <li><b>pipebuffer</b> - utility module for managing buffers
 121       <li><b>rbug</b> - Gallium remote debug utility
 122       <li><b>rtasm</b> - run-time assembly/machine code generation.
 123           Currently there's run-time code generation for x86/SSE, PowerPC
 124           and Cell SPU.
 125       <li><b>tgsi</b> - TG Shader Infrastructure.  Code for encoding,
 126           manipulating and interpreting GPU programs.
 127       <li><b>translate</b> - module for translating vertex data from one format
 128           to another.
 129       <li><b>util</b> - assorted utilities for arithmetic, hashing, surface
 130           creation, memory management, 2D blitting, simple rendering, etc.
 131       </ul>
 132     <li><b>state_trackers</b> -
 133        <ul>
 134        <li><b>clover</b> - OpenCL state tracker
 135        <li><b>dri</b> - Meta state tracker for DRI drivers
 136        <li><b>glx</b> - Meta state tracker for GLX
 137        <li><b>vdpau</b> - VDPAU state tracker
 138        <li><b>vega</b> - OpenVG 1.x state tracker
 139        <li><b>wgl</b> -
 140        <li><b>xorg</b> - Meta state tracker for Xorg video drivers
 141        <li><b>xvmc</b> - XvMC state tracker
 142        </ul>
 143     <li><b>winsys</b> -
 144        <ul>
 145        <li><b>drm</b> -
 146        <li><b>gdi</b> -
 147        <li><b>xlib</b> -
 148        </ul>
 149     </ul>
 150   </ul>
 151   <ul>
 152   <li><b>glx</b> - The GLX library code for building libGL.  This is used for
 153          direct rendering drivers.  It will dynamically load one of the
 154          xxx_dri.so drivers.
 155   </ul>
 156 <li><b>lib</b> - where the GL libraries are placed
 157 </ul>
 158
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