| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <meta http-equiv="content-type" content="text/html; charset=utf-8"> |
| <title>Development Notes</title> |
| <link rel="stylesheet" type="text/css" href="mesa.css"> |
| </head> |
| <body> |
| |
| <div class="header"> |
| <h1>The Mesa 3D Graphics Library</h1> |
| </div> |
| |
| <iframe src="contents.html"></iframe> |
| <div class="content"> |
| |
| <h1>Development Notes</h1> |
| |
| |
| <ul> |
| <li><a href="#extensions">Adding Extensions</a> |
| </ul> |
| |
| <h2 id="extensions">Adding Extensions</h2> |
| |
| <p> |
| To add a new GL extension to Mesa you have to do at least the following. |
| |
| <ul> |
| <li> |
| If glext.h doesn't define the extension, edit include/GL/gl.h and add |
| code like this: |
| <pre> |
| #ifndef GL_EXT_the_extension_name |
| #define GL_EXT_the_extension_name 1 |
| /* declare the new enum tokens */ |
| /* prototype the new functions */ |
| /* TYPEDEFS for the new functions */ |
| #endif |
| </pre> |
| </li> |
| <li> |
| In the src/mapi/glapi/gen/ directory, add the new extension functions and |
| enums to the gl_API.xml file. |
| Then, a bunch of source files must be regenerated by executing the |
| corresponding Python scripts. |
| </li> |
| <li> |
| Add a new entry to the <code>gl_extensions</code> struct in mtypes.h |
| if the extension requires driver capabilities not already exposed by |
| another extension. |
| </li> |
| <li> |
| Add a new entry to the src/mesa/main/extensions_table.h file. |
| </li> |
| <li> |
| From this point, the best way to proceed is to find another extension, |
| similar to the new one, that's already implemented in Mesa and use it |
| as an example. |
| </li> |
| <li> |
| If the new extension adds new GL state, the functions in get.c, enable.c |
| and attrib.c will most likely require new code. |
| </li> |
| <li> |
| To determine if the new extension is active in the current context, |
| use the auto-generated _mesa_has_##name_str() function defined in |
| src/mesa/main/extensions.h. |
| </li> |
| <li> |
| The dispatch tests check_table.cpp and dispatch_sanity.cpp |
| should be updated with details about the new extensions functions. These |
| tests are run using 'make check' |
| </li> |
| </ul> |
| </p> |
| |
| |
| |
| |
| </div> |
| </body> |
| </html> |
