sleirsgoevy / piglet-shaders

PoC of custom shaders for Piglet

Piglet custom shader PoC

This is a PoC for compiling Piglet fragment shaders using Mesa3D.

• You need to provide a compatible vertex shader, it's needed because Mesa3D compiles both shaders at once.
• At most one sampler is currently supported.
• This a PoC and can break at any time.

victim.c is loosely based on this EGL sample

Dependencies

• Mesa3D (obviously)
• CLRX

Usage

cd compiler
make
bash compile.sh vertex.glsl fragment.glsl vertex.bin fragment.bin

Known non-trivial bugs (require Mesa patching to fix)

• Matrices other than mat4 are broken (std140)
• Arrays of anything but vec4 and mat4 are broken (std140)
• Constant arrays are not supported, pass them as uniforms instead