depth and buffers and DepthToZPosition

[shadmar]

Not sure what is broke, but my previously working water has issues with depth or depthtozposition.

Seems like it's not correctly computed or maybe camerarange contains nils?, have no idea what to look for.

 

I use this :

float DepthToZPosition(in float depth) {

return camerarange.x / (camerarange.y - depth * (camerarange.y - camerarange.x)) * camerarange.y;

}

 

This is what it looks like now :

 

[shadmar]

Published lua test project : https://dl.dropbox.c...319604/lua1.exe

[Josh]

Is this an installer or a packed EXE? I can't see the Lua code if it's all packaged up in one EXE.

 

In the Buffer::Create() function you need to specify 1 color buffer, and 1 to include a depth buffer.

[shadmar]

It's the installer exe that LE creates when I click publish.

 

 

self.buffer = Buffer:Create(1024,768,1,1)

The color and depth buffers are created, but I can't d depth to z position correctly anymore after latest update. (it was working before last update in cpp) now I can't seem to do it in either cpp or lua.

 

How to compute accurate screencoords after latest update?

[Josh]

Although buffers are not officially in the API yet...one thing that changed recently is the depth component is being clamped now. So if your texture coordinates are outside the range of 0-1, they will get clamped to the edges. I bet that is causing it.

[shadmar]

I guess, but I don't know how to work around that.

The texture coordinates are just :

vec2(gl_FragCoord.x/buffersize.x, -gl_FragCoord.y/buffersize.y)

[Josh]

Try this:

 

vec2(gl_FragCoord.x/buffersize.x, 1.0-gl_FragCoord.y/buffersize.y)

[shadmar]

Would you look at that...

I'm sure that was the only combo I didn't try..

 

Thanks Josh