Michał Król wrote:
Hello,
I have enabled GLSL in Mesa, although it is not complete.Some programming
"candies" are not supported, butthis will change soon as I have now a plenty of
free time.
I have commited a demo, arbfslight, which is a GLSL versionof Brian's
arbfplight.c. It contains some hacks, but shouldlook identically.
Jeffrey Timanus offered implementing the preprocessor part.If you are ready, I
am also ready to include it.
I will need some help with incorporating the GLSL intostate machine from
somebody who has the overallsight on the Mesa project. Specifically, I meanall
the code that gets executed when the GL statechanges (like in texstate.c), the
interactions betweenGLSL and the rest of the code, the additional actionsthat
need to be taken when a valid program objectis bound or unbound, etc.
CONCERNING 3DLABS' GLSL COMPILER
We have agreed that 3DLabs' compiler is going to be incorporatedinto Mesa.
Because of problems with getting it compile under MesaI have decided to write
custom plain-C compiler. So is to theNVIDIA's preprocessor.Having this in mind
I separated GL_ARB_shader_objects fromthe remaining 3 extensions. Also I
separated the front-compiler(the slang_compile*.[ch] files) from code
generations (theslang_assemble*.[ch] files). It is possible to plug the
3DLabs'front-end compiler into Mesa, while having the plain-C version.It is
possible, but one is not limited to, to use the existingassembly generator to
generate the code from 3DLabs' front-endoutput tree.However, currently I dont
have so much time to incorporate the3DLabs' compiler into Mesa. Dont get me
wrong, I just cannotguarantee I will be able to do it in a short time. I do not
wantto block other people form doing that. If there is a volunteer,I offer my
help in solving the questions.
--Pozdrawiam,Michał
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Michal,
Two questions:
Firstly, I'm just looking at the shaders/slang directory now. How much
of the C++ code in there is required for your compiler/assembler? It
seems like from what is said above that your code is independent of the
3dlabs code, but they're currently located together in the mesa tree.
Is there currently any dependency at all, and if so what?
Secondly, and please don't take offence - I don't really know much about
how email formatting works, but for some reason your emails are very
hard to read - very small font and very long, non-wrapped lines, and
finally a string of garbage at the end of your signature. Probably some
of this is my mail reader not coping with the character set you write
in, but would it be possible to wrap your emails at some reasonable
length and (for mail to the list) if it's easy to do, consider using a
character set that is commonly installed on other peoples machines?
Keith
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