obs-shaderfilter-plus-shaders/anaglyph_3d/red.glsl

float4 render(float2 uv) {
	float4 image_color = image.Sample(builtin_texture_sampler, uv);
	image_color[3] = 0.5;
	image_color[1] = 0;
	image_color[2] = 0;
	return image_color;
}