MinecraftShaders

My minecraft shaders for minecraft. This project will receive a lot fewer updates than usual for the coming 1-2 weeks

TODO List

New TODO list:

• Use noistex to generate perlin and simplex noise. This will useful for the fBm noise use in VL cloud rendering
• Screen space reflections
• Realistic ocean waves
• Reflective shadow maps
• Multiple scattering atmosphere
• Move the gbuffers files into one program
• Proper waterdroplet on camera simulation
• Add a focal engine branch once focal engine goes public, and rename this branch to optifine branch

Old TODO list:

• Add forward rendering for gbuffers_water and other forward shader stages
• Improve shadows while optimially keeping shadowDistance around 128.0f and shadowResolution under 2048
• Add other programs - mostly done
• Organize the shader files in a better manner
• Specular map (labpbr)
• Add better support for plants (subsurface scattering and waving plants)
• Sky rendering (volumetric clouds and atmospheric scattering, ozone absorption ) - cloud rendering needs to be reworked
• Bloom - needs more tuning/fixing, maybe switch to bloom tiles
• DOF
• SSAO
• SSR
• Reflective shadow maps
• Revisit volumetric lighting and try to implement it properly
• Give the shader a name
• 2D clouds, like the one in void 2.0 and seus v10.1 - I don't have cloud streaks but the current implementation is enough for now
• Water droplet effect on the camera
• Use a LUT for atmospheric scattering
• Fire volume rendering - too difficult and uncessary
• Use a more realistic method for plant displacement, like the one used in SEUS v10.1
• Color temprature and more accurate sun color
• Add support for oldPBR and other resource packs as well
• Proper day night transition
• Adjusted values for torch and sky lightmap
• Star rendering - sort of? but it looks terrible
• Additional tonemap support
• Fog
• Combine deferred gbuffers and forward gbuffers into a common file
• Improve shadow quality

Known issues

• Atmosphere looks bad and isn't completely physically based
• Translucent items do not have proper forward rendering when dropped
• Shadows of translucent items do not appear when held in the players hand
• Shadow acne at the bottom of the shadow map due to shadow distortion
• Volumetric lighting has an unintended cloud layer above the player
• VL also is barely visible in small scenes and maybe a bit too much in large scenes
• There is no fog for parts of the world behind the player due to the forward mie scattering that takes place in VL
• The waving plants start shaking quickly when transitioning from rain to clear or clear to rain

Works used

This shader is based of the works of:

• Continuum Shader Tutorial
• Continuum Shaders
• SEUS V10.1
• KUDA V6.5.56
• Kappa V2.2
• Scratch A Pixel - Simulating the Colors of the Sky
• Oskar Elek - Rendering Parametrizable Planetary Atmospheres with Multiple Scattering in Real-Time
• Learn OpenGL - Bloom
• labPBR Documentation
• Sebastien Hillaire - Physically Based Sky, Atmosphere and Cloud Rendering in Frostbite
• Computer Graphics Forum - Efficiently Simulating the Bokeh of Polygonal Apertures in a Post-Process Depth of Field Shader
• Intel - Compute Shader HDR and Bloom
• ATI Technologies - Rendering Outdoor Light Scattering in Real Time
• GPU Gems - Chapter 11. Shadow Map Antialiasing
• GPU Gems 2 - Chapter 16. Accurate Atmospheric Scattering
• Wikipedia - Bilinear interpolation
• John Chapman - Screen Space Lens Flare
• Shadertoy robobo1221 - Real time PBR Volumetric Clouds
• Andrew Schneider and Nathan Vos - The real-time volumetric cloudscapes of Horizon: Zero Dawn
• Google Fractal Terrain Generation - Fractional Brownian Motion
• Generating and Rendering Procedural Clouds in Real Time on Programmable 3D Graphics Hardware