Writing shaders - YOU can do it!

Writing ShadersYOU can do it!

Unite Boston 2015

● Yılmaz Kıymaz

● Unity developer for 7 years

● Shader enthusiast

● Software Development Engineer at Nordeus

WRITING SHADERSYOU CAN DO IT!

NORDEUS

Belgrade based

WRITING SHADERSYOU CAN DO IT!

Developer of Top Eleven

Shaders areWRITING SHADERSYOU CAN DO IT!

scary!interesting

Weird terminology Unfamiliar math and data Runs on the GPU!?

Vertices, fragmentsVectors, matrices, texturesCross productDot productMatrix multiplication

Primitive assemblyRasterizationZWriteCullStencil

Massively parallelizedDifferent performance criteriaDifferent constraints

Run away?

Learn all of it?

Actually...

You don't need to worry about this

WRITING SHADERSYOU CAN DO IT!

Experiment Fail Learn Repeat

Attend this talk Learn Profit!

What are shaders?WRITING SHADERSYOU CAN DO IT!

Shader GPU ImageInputMesh

Material DataLighting Dataand more

How do they work?WRITING SHADERSYOU CAN DO IT!

Shader LanguagesWRITING SHADERSYOU CAN DO IT!

HLSL GLSL CG

OpenGL Shading Language

OpenGL ARB (Architecture Review Board)

OpenGL

Windows, Mac, Linux, iOS, Android and more

High Level Shading Language

Microsoft

DirectX

Windows, XBox

C for Graphics

Nvidia

DirectX & OpenGL

Deprecated but...

Thanks to Unity, covers all platforms

ShaderLabWRITING SHADERSYOU CAN DO IT!

Unity specific shading and material language

All shaders written in Unity must be wrapped with ShaderLab

May seem like extra work but it's actually saving you from a lot more work

Dive into Unity

WRITING SHADERSYOU CAN DO IT!

Diffuse

WRITING SHADERSYOU CAN DO IT!

Specular

● Unity Manual● Nvidia CG Tutorial● CG Programming in Unity wikibook● Video tutorial series on YouTube● ShaderToy● Aras' blog - aras-p.info/blog● LearnOpenGL.com● RealTimeRendering.com● Many more at

RESOURCESWRITING SHADERSYOU CAN DO IT!

norde.us/unitewritingshaders

● Shader languages● Shaders in Unity (ShaderLab)● Vertex and Fragment Programs● Lighting calculations● Resources

RECAP

WRITING SHADERSYOU CAN DO IT!

● yilmazk@nordeus.eu

● @VoxelBoy

● norde.us/unitewritingshaders

Q&A

WRITING SHADERSYOU CAN DO IT!

THANK YOU!

WRITING SHADERSYOU CAN DO IT!