Development Notes

Adding Extentions

To add a new GL extension to Mesa you have to do at least the following.

Coding Style

Mesa's code style has changed over the years. Here's the latest.

Comment your code! It's extremely important that open-source code be well documented. Also, strive to write clean, easily understandable code.

3-space indentation

If you use tabs, set them to 8 columns

Brace example:

	if (condition) {
	   foo;
	}
	else {
	   bar;
	}

Here's the GNU indent command which will best approximate my preferred style:

	indent -br -i3 -npcs --no-tabs infile.c -o outfile.c

Local variable name example: localVarName (no underscores)

Constants and macros are ALL_UPPERCASE, with _ between words

Global variables are not allowed.

Function name examples:

	glFooBar()       - a public GL entry point (in glapi_dispatch.c)
	_mesa_FooBar()   - the internal immediate mode function
	save_FooBar()    - retained mode (display list) function in dlist.c
	foo_bar()        - a static (private) function
	_mesa_foo_bar()  - an internal non-static Mesa function

Making a New Mesa Release

These are the instructions for making a new Mesa release.

Get latest source files

Use git to get the latest Mesa files from the git repository, from whatever branch is relevant.

Verify and update version info

Create/edit the docs/relnotes-x.y.html file to document what's new in the release. Add the new relnotes-x.y.html file to relnotes.html.

Update the MESA_MAJOR, MESA_MINOR and MESA_TINY version numbers in configs/default. Also update the VERSION line in the top-level Makefile.

Make sure the values in src/mesa/main/version.h are correct.

Update docs/news.html.

Check in all updates to git.

Tag the files with the release name (in the form mesa_X_Y) with: git tag -a mesa_X_Y Then: git push origin mesa_X_Y

Make the tarballs

Make a symbolic link from $(DIRECTORY) to 'Mesa'. For example, ln -s Mesa Mesa-7.5 This is needed in order to make a correct tar file in the next step.

Make the distribution files. From inside the Mesa directory:

	make tarballs

After the tarballs are created, the md5 checksums for the files will be computed. Add them to the docs/relnotes-X.Y.html file.

Copy the distribution files to a temporary directory, unpack them, compile everything, and run some demos to be sure everything works.

Update the website and announce the release

Follow the directions on SourceForge for creating a new "release" and uploading the tarballs.

Basically, to upload the tarball files with:
rsync -avP ssh Mesa*-X.Y.* USERNAME@frs.sourceforge.net:uploads/

Update the web site by copying the docs/ directory's files to /home/users/b/br/brianp/mesa-www/htdocs/ with:
sftp USERNAME,mesa3d@web.sourceforge.net

Make an announcement on the mailing lists: mesa3d-dev@lists.sf.net, mesa3d-users@lists.sf.net and mesa3d-announce@lists.sf.net