dolphin/Data/Sys/Shaders/emboss.glsl

uniform sampler2D samp9;

out vec4 ocol0;
in vec2 uv0;

uniform vec4 resolution;

void main()
{
	float4 c0	= texture(samp9, uv0).rgba;
	float4 c1	= texture(samp9, uv0 + float2(5.0,5.0)*resolution.zw).rgba;
	float y		= (0.222 * c1.r) + (0.707 * c1.g) + (0.071 * c1.b);
	float y2	= ((0.222 * c0.r) + (0.707 * c0.g) + (0.071 * c0.b)) / 3.0;
	float red	= c0.r;
	float green	= c0.g;
	float blue	= c0.b;
	float alpha	= c0.a;

	red	= y2 + (1.0 - y);
	green	= y2 + (1.0 - y);
	blue	= y2 + (1.0 - y);

	ocol0 = float4(red, green, blue, alpha);
}