DolphinFX v1.30 is released. DolphinFX is a WIP shader suite for Dolphin's OpenGL backend.

Current effects include:
HQ FXAA (Fast Approximate Anti Aliasing)
NFAA (Normal Filter Anti Aliasing)
High Pass Bloom
Per-Channel Gamma Correction
Scene Tone Mapping
RGB Colour Correction
S-Curve Contrast Enhancement
Texture Sharpening
Toon Shader
Bicubic & Bilinear Filtering
You can enable, or disable each effect from inside the shader file. Everything is customizable. Settings are clearly sectioned, and labeled. Use the documentation comments for instructions on each option.

To Install:
Extract DolphinFX to your Dolphin-> \Sys\Shaders folder. Then enable the shader in the OpenGL graphics options->enhancements->post-processing effect->DolphinFX.

To Edit Settings:
Open DolphinFX.glsl in a text editor. I recommend Notepad++. It will look crazy messy if you use regular notepad to edit. You could also use an IDE to edit it, if you like. You can enable, disable, and customize various options for each effect. The default setup is neutral. Which tries to enhance the game's visuals without changing the overall tone & feel of it. If you're not happy with the default setup, there are plenty of settings to customize everything to your liking.

DolphinFX v1.30 changelog:
-Added a simple Scanline effect, as requested. For those who like that effect in 2D/sprite oriented games, etc.
-Slightly improved FXAA's edge detection, for better coverage. Also a small increase in performance.
-Slightly improved Gaussian filtering, & NFAA's Bilinear filtering.
-Texture Sharpening: added the option to use Luminance, or color based edge detection.
-Improved Bloom's output blend slightly.
-Updated options commenting a bit, again. Also included small postfix on AA, to indicate if the technique is better for 2D, or 3D.
-Various small coding improvements overall.

Download: DolphinFX v1.30
Source: Here