Depthbuffer in Postprocessing Shader

[Ma-Shell]

Hi,

 

is it possible to use the depthbuffer for postprocessing effects?

I looked at all the existing postprocessing shaders and saw, all of them only use the color-texture, which is retrieved by

 

uniform sampler2D texture1;

 

I also found, that texture2 contains some kind of a cobblestone texture but all the other slots seem to be empty.

 

Also I saw, it is possible to push a Vec4 Uniform to the shader by

 

(C++):
myShader->SetVec4("foo", Vec4(0,0, 1, 1));

(GLSL):
uniform vec4 foo;

 

but I didn't find any way of pushing an arbitrary texture as a uniform.

[shadmar]

Look in bloom.lua

 

--Called each time the camera is rendered
function Script:Render(camera,context,buffer,depth,diffuse,normals,emission)

[Ma-Shell]

Thanks, got it working with your bloom.lua.

In case anyone else is interested:

 

//Render first image
myBuffer->Enable();
world->Render();
myBuffer->Disable();
context->Enable();
context->SetShader(myShader);
myBuffer->GetColorTexture()->Bind(1);
myBuffer->GetDepthTexture()->Bind(2);
context->DrawImage(myBuffer->GetColorTexture(),0,0);

 

The shader will get those by

 

uniform sampler2D texture1;
uniform sampler2D texture2;

 

Another question regarding this:

The depth-texture will only use the red-channel. The green- and blue-channel will always be 0 and the alpha-channel will always be 1. Storing four values per pixel if actually only one is useful, seems to be kind of a waste of space. Especially on the GPU space is a valuable good.

Is there anything I can do to help this?

[Shadoh]

Cheers! I was actually just about to ask this