Re: OpenGL-ES

I'm really swamped this week and won't have time to look at this in 
detail for probably a couple of weeks (out of town next week).  A few 
quick comments below:


James Amendolagine wrote:
> On Thu, 2004-09-16 at 13:21, Brian Paul wrote:
> 
>>OpenGL-ES also defines an API for pixelformat/drawable/context 
>>management (like GLX or WGL) called "EGS": 
>>http://www.khronos.org/cgi-bin/fetch/fetch.cgi?egl_1_1
>>
> 
> 
> OK, I've done a first pass at an ES version of chromium. 
> 
> 
> I've kept notes on the files that required modification: 
> -glapi_parser/APIspec.txt  
> -opengl_stub/defs.py
> -state_tracker/state_buffer.txt 
> -state_tracker/state_special
> -state_tracker/state_attrib.c    
> -state_tracker/state_buffer.c
> -state_tracker/state_get.txt
> -include/state/cr_buffer.h
> -include/state/cr_attrib.h
> -state_tracker/state_fog.c
> -state_tracker/state_get.py
> -state_tracker/state_lighting.c
> -state_tracker/state_line.c
> -state_tracker/state_point.c
> -state_tracker/state_polygon.c
> -state_tracker/state_texture.c
> -state_tracker/state_transform.c
> -packer/packer.def -- also needs some mod
> 
> -glapi_parser/apiutil.py:    // added the type    'GLclampx': 4,
> -glapi_parser/apiutil.py:    // added the type    'GLfixed': 4,
> -progs/packer/packertest.py: 'GLfixed':    ('%d','int'),
> -spu/printspu/printspu.h, printspu_matrices.c ... 
> -packer/packer_special
> 
> -include/cr_estypes.h // added this file
> 
> -packer test makefile needed to add an entry for pakerteset600 .. 625
>    needed to edit packertest.py to handle a GLfixed params and GLfixed 
> 
> 
> 
> Changes to the APIspec.txt file along the lines of this: 
> 
> -----------------------------------------------------------
> ###############################################
> #  ESification
> ###############################################
> name		Frustumf
> return		void
> param		left		GLfloat
> paramlist	left		-1.0
> param		right		GLfloat
> paramlist	right		1.0
> param		bottom		GLfloat
> paramlist	bottom		-1.0
> param		top		GLfloat
> paramlist	top		1.0
> param		zNear		GLfloat
> paramlist	zNear		1.0
> param		zFar		GLfloat
> paramlist	zFar		10.0
> category	1.0

The category for all these functions should probably be something new, 
like "ES-1.0".  I think this field is significant in one or two of the 
Python code generator scripts.



> I've seperated the EGL work from the ES work by adding an ES
> functionality wrapper to the Mesa- OpenGL library on my system -- So
> OpenGL on my system now looks like GL + GLES. 

I think I've heard of a few OpenGL / OpenGL ES wrappers being in 
existance.  Have you looked at any of those.


> I did a sanity test on all of the GLES calls now in Chromium by building
> a test application that does drawing using each ES call. This now works
> through the chromium system. 

What kind of Chromium configuration did you test with?

-Brian


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