I've refactored the rendering system in my engine.

The old way of rendering was complete in SDR.  

In this update I created a separate off screen framebuffer that everything is rendered to first.

This offscreen framebuffer is a float framebuffer, and can store values outside of the normal [0,1] r…

“IBL” just means you're getting lighting from an image. Any method for sampling lighting from an image is IBL, what the OP is doing here definitely qualifies. There are of course many other options for implementing IBL, such as pre-filtered cubemaps and other related techniques.

If your image has sm…

Try to do the following:

1. Start with something very simple like hardcoding the Gaussian coefficients in a table and iterate on these values in the fragment shader. You can use a Pascal triangle to get discrete Gaussian coefficients. Here’s some glsl fragment shader code to get you started:

in VS_OU…