gl4java-usergroup

Re: [gl4java-usergroup] texture compression

[Kenneth B. R. <kbr...@al...>]

> Calling GLContext.gljTestGLProc("GL_ARB_texture_compression", false)
> returns always false.

gljTestGLProc does a dlsym() underneath, so the argument you
should pass to it should be the actual OpenGL function name,
probably "glCompressedTexImage2DARB". Ensure all of the functions
you need are present. It currently special-cases the NVidia
memory allocation routine for vertex_array_range, exposing it as
glAllocateMemoryNV instead of wglAllocateMemoryNV /
glXAllocateMemoryNV. See demos/NVidia/VertexArrayRange for
example usage.

[gl4java-usergroup] Re: texture compression

[Kenneth B. R. <kbr...@al...>]

> If I test for extension availability with glVertexArrayRangeNV, I get :
> GLINFO: glVertexArrayRangeNV (1): loaded !
> 
> If I test for extension availability with CompressedTexImage2DARB, I get
> :
> GLINFO: CompressedTexImage2DARB (3): not implemented !

Shouldn't you be testing glTestProc("glCompressedTexImage2DARB")?

> This page http://www.3dnature.com/glbench.html reports
> ARB_texture_compression is available with any kind of Geforce 2 though.
> 
> Is there any possibility the extension could not have been mapped with
> gl4java ?

If the method is present in GLFunc then C2J generated a wrapper
for it. The only remaining questions are whether the dynamic
lookups succeeded at startup and whether you're passing in the
correct argument to glTestProc.

[gl4java-usergroup] RE : texture compression

[Alban C. <aco...@wa...>]

Shouldn't you be testing glTestProc("glCompressedTexImage2DARB")?

Ah yes, that's the point. I didn't figure out about the "gl" prefix.

Texture compression does work fine ! :)

Many thanks

Alban