Triton effect can not display in osgEarth3.6

[FuXiii]

• GPU: RTX 3070

Before I use osgEarth3.6 , I had been used osgEarth3.3 : install the osgEarth::Util::LogarithmicDepthBuffer on root camera and use user-functions.glsl user-vert-functions.glsl which under the src/osgEarthTriton/Shaders to replace the same name shader file under $(TritonPath)/Resources

Everything is well in osgEarth3.3 , but after I upgrade to use osgEarth3.6 the Triton ocean disappear base the same code usage.

And I try to:

1. uninstall osgEarth::Util::LogarithmicDepthBuffer
2. change the user-vert-functions.glsl like:

...
vec4 overridePosition(in vec4 position)
{
   //return oe_logdepth_vert(position); // osgEarth3.6
   return position;
}

3. change user-functions.glsl like:

...
void writeFragmentData(in vec4 finalColor, in vec4 Cdiffuse, in vec3 lightColor, in vec3 nNorm)
{
   //finalColor.a *= oe_VisibleLayer_opacityUniform;// osgEarth3.6
   finalColor.a = 1;

#ifdef OPENGL32
   fragColor = finalColor;
#else
   gl_FragColor = finalColor;
#endif
}

The Triton ocean can display but looks like the accuracy is low (Not highly coupled with the coastline).

After that I guess maybe the uniform mat4 osg_ProjectionMatrix not set correctly, and then I try to code in user-vert-functions.glsl like:

...
vec4 overridePosition(in vec4 position)
{
   mat clip2view = inverse(osg_ProjectionMatrix);
   return osg_ProjectionMatrix * clip2view * position;
}

And after I run the application the Triton ocean disappear. Maybe the osg_ProjectionMatrix not set correctly let it become zero matrix.

---

And I try to use TritonLayer::setOpacity(float) to set ocean Alpha , the result look like not affect on oe_VisibleLayer_opacityUniform in user-functions.glsl

[gwaldron]

Thanks for explaining the things you tried.
My Triton is working properly with 3.6 with the stock changes. Did you update Triton to the latest version as well? What version are you using? I am on version 4.28.

[FuXiii]

base releasenotes.txt under Triton SDK :

Triton Release History

Version 4.50 March 22, 2023
- Rebuilt fftss library on Windows with vc14 to avoid linker warnings
- Fix a couple of compiler warnings

...

the version is 4.50

[gwaldron]

Correction, I am also using 4.50.
(I was looking in the Version.h file which said 4.28)

[FuXiii]

Base my install Triton, there has not Version.h file.

So when I compile osgEarth I had remove the #include<Version.h> in:

• SliverLiningAPIWapper.cpp
• SliverLiningCloudDrawable.cpp
• TritonDrawable.cpp

note : The Triton install package download from Sundog

[gwaldron]

I just downloaded the latest version (4.54) and thereVersion.h is there.
Built and tested OK after copying in the shaders.