Multi pass rendering

[jdm-dumont]

Hi,

I'm trying to develop a 2 pass rendering layer but the lack of samples and documentation doesn't help me... :(

I want draw rings witch are shrinking with the ellapsed time, for that i have created to model:

• The first one uses the depthCompare 'less' to choose valid fragment (the only way i found to manager superposition, ie no outline over a ring center).
• The second use the color written in the texture given to the first layer to display in renderPass

When i try to display the first layer directly in the renderPass, the render is correct but discard all data in the global buffer. Therefore, i would use a texture and use it in the second pass
. But actually, my texture is still empty and i don't understand how to bind the FBO in deck.gl / luma.gl

Thanks for your replies ! :)

Layer.md
pass1-fragment.glsl.md
pass2-fragment.glsl.md
fow-uniform.md