OpenGL - blur a component

[alassandro]

Seems similar to this thread:

Pixel shader on 2D vector graphics

I'm trying to create a bloom effect on some 2D vector graphics. I've tried doing this myself for a while but I can't figure out how to get the drawn colors into a texture that a pixel shader can read. I'm using the OpenGLGraphicsContextCustomShader since it says it's good for per pixel effects: "Used to create custom shaders for use with an openGL 2D rendering context. Given a GL-based rendering context, you can write a fragment shader that applies some kind of per-pixel effect." I could prob…

I’m in the middle of trying to do some similar things now ( as seen in the thread ) it seems you’d have to paint to an OpenGLImageType and then draw that image to a quad using a shader. You should be able to do it without OpenGLRenderer although it might be more cumbersome

There may even be an opportunity to use ImageEffectFilter to handle the blur, so you get passed the component image already finished and just draw it using the shaders. I’ve been looking into using that approach myself but haven’t gotten to try it out yet