[Gambas-devel] GLSL language

[tommyline at ...674...]

Hi Benoit, Laurent, Kevin and all interested in OpenGl.
I've registered new e-mail on both lists, so hopefully I can mail you again.
Since my last post I tried to get familiar with GLSL and to be able to use shaders I had to ater the glsl library.

First issue in glsl GL.c file:

GB_STATIC_METHOD("GetUniformLocation", NULL, GLGETUNIFORMLOCATION, "(Program)i(Name)s"),

function should return integer value, not NULL.

It needs some functions to pass uniform and attribute variables to shaders:

/* GLattributes.c */
	GB_STATIC_METHOD("BindAttribLocation",NULL, GLBINDATTRIBLOCATION, "(Program)i(Index)i(Name)s"),
	GB_STATIC_METHOD("VertexAttrib1f", NULL, GLVERTEXATTRIB1F, "(Index)i(X)f"),
	GB_STATIC_METHOD("VertexAttrib1fv", NULL, GLVERTEXATTRIB1FV, "(Index)i(V)Float[]"),
	GB_STATIC_METHOD("VertexAttrib2f", NULL, GLVERTEXATTRIB2F, "(Index)i(X)f(Y)f"),
	GB_STATIC_METHOD("VertexAttrib2fv", NULL, GLVERTEXATTRIB2FV, "(Index)i(V)Float[]"),
	GB_STATIC_METHOD("VertexAttrib3f", NULL, GLVERTEXATTRIB3F, "(Index)i(X)f(Y)f(Z)f"),
	GB_STATIC_METHOD("VertexAttrib3fv", NULL, GLVERTEXATTRIB3FV, "(Index)i(V)Float[]"),
	GB_STATIC_METHOD("VertexAttrib4f", NULL, GLVERTEXATTRIB4F, "(Index)i(X)f(Y)f(Z)f(W)f"),
	GB_STATIC_METHOD("VertexAttrib4fv", NULL, GLVERTEXATTRIB4FV, "(Index)i(V)Float[]"),
	GB_STATIC_METHOD("GenFramebuffersEXT", "i", GLGENFRAMEBUFFERSEXT, "(N)i"),
	GB_STATIC_METHOD("FramebufferTexture2d", NULL, GLFRAMEBUFFERTEXTURE2D, "(Target)i(Attachment)i(Textarget)i(Texture)i(Level)i"),
	GB_STATIC_METHOD("BindFramebufferEXT", NULL, GLBINDFRAMEBUFFERSEXT, "(Target)i(Framebuffer)i"),
	GB_STATIC_METHOD("CheckFramebufferStatusEXT", "i", GLCHECKFRAMEBUFFERSTATUSEXT, "(Target)i"),

so, I added them. Send you new GL.c GLattributes.c an GLattributes.h files, if you could check them and attach to the repository, I'd be very happy.

By the way, what is the limit of attachments?

Regards
Tomek
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