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Cocos Creator 3.8 Post-Process Shader Writing (2/2) Advanced

Cocos

Preface In the last article , Kylin shared how to add your own post-effect Shader in the custom render pipeline in Cocos Creator 3.8. However, based on the BlitScreen solution, we can only write the simplest post-effect Shader. Today Kylin will use Gaussian blur to demonstrate how to write a multi-pass post-effect shader.

Shaders 98
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How to Create a Game-Ready AAA asset

Logic Simplified

I used a Blinn Shader on the asset to spot any issues with the mesh. Blinn Shader helped me see highlights produced due to light shining off the surface at low angles. With that I have to create a low poly model of the gun on which we will bake the high poly details. I believe forms first - details last.

Asset 81
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Dev snapshot: Godot 4.0 beta 9

Mircosoft Game Dev

Core: Handle corner cases for curve baking ( GH-69726 ). Rendering: OpenGL: Fix scene shader error when using Omni or Spot but not both ( GH-69901 ). Shaders: Fix the sorting of shader uniforms ( GH-70016 ). Shaders: Optimize code generation of visual shader particles ( GH-69900 ).

Beta 98
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Cocos Creator 3.7.2 Focuses On Optimized Rendering And Lighting Capabilities

Cocos

Editor • Support baking high-precision lighting maps to get a better baking effect. When the user turns on high-precision lightmap baking, 16-bit colors are used instead of 8-bit colors, and AO channels are baked separately. Improvements • Move the Light Bake entry from the top item settings menu to the panel menu. •

Render 52
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Godot 4.0 will get a new, modernized lightmapper

Mircosoft Game Dev

The new lightmapper is GPU based written mostly on Compute shaders (meaning it does most of the heavy lifting using the GPU, via Vulkan). Most scenes bake in seconds instead of minutes or hours. Allows baking dynamic and static lights. Performs AI-based denoiser on the final bake, to ensure lightmaps are as smooth as possible.

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Introducing the new "last minute" lightmapper

Mircosoft Game Dev

This generally works and looks pretty, but it's quite shader intensive, which makes it not work on mobile or low end GPUs. The solution to these problems is to add support for a more traditional lightmapper (pre-baked light texture). Just cover the scene with the volume, as you do with GIProbe: Finally, just press the big BAKE button.

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New improvements for GPUParticles in Godot 4.0

Mircosoft Game Dev

GPUParticles : Processes particles on GPU, allows very large amount of particles at little cost, and with ability to write custom particle shaders. x and the shader used is almost identical (should be easy to port). It can also be done from within a particle shader itself by chaining another particle system as a sub-emitter.