Hi,
I am working on an application that has to work both on regular Ubuntu
environment and on Android. So I have written a couple of shaders in order to
comply with GLES2 specs.
The problem is, with regular OpenGL profile on Ubuntu, the same shader is not
working properly: the osg_MultiTexCoord0 seems to not be working, while
gl_MultiTexCoord0 works (but obviously noton GLES2 of course).
Here is my vertex shader:
Code:
attribute vec4 osg_Vertex;
uniform mat4 osg_ModelViewProjectionMatrix;
attribute vec4 osg_MultiTexCoord0;
varying vec4 texCoord;
void main(void) {
gl_Position = osg_ModelViewProjectionMatrix * osg_Vertex;
texCoord = osg_MultiTexCoord0;
}
The fragment shader is just applying the texture thanks to the texCoord
variable.
So on GLES2 this vertex shader works properly, but on OpenGL 2 I have to
replace osg_MultiTexCoord0 by the old gl_MultiTexCoord0 in order to make it
work.
I have tried with OSG 3.2 (as apt packages on Ubuntu), 3.4 and 3.5 as sources,
and I always get the same results.
I have applied setUseModelViewAndProjectionUniforms(true) on my graphics
context state to enable osg_* matrices. Is there a possibility to also enable
other osg_* variables ?
Thank you!
Cheers,
Pierre-Jean
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=66255#66255
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