If someone is missing **real** “Hello, World” program written in a shader language, here it is.

Pixel shader HLSL, shader model 3.0 (in effects file); pixel shader only, that takes as input only u,v.

More serious challenge could be to write Quine program, but I have other things to do.

const int L[18]={ 0xad27, 0xa925, 0xED25, 0xa925, 0xaDB7, 0x0000, 0x85eE, 0x852b, 0xad2b, 0xf92e, 0x712b, 0x51e9, 0x0000, 0xC3CF, 0xc36f, 0xc326, 0xc360, 0xf3cf }; float4 PS(float2 tex : TEXCOORD0):COLOR0 { float4 output = float4(0,tex.x,tex.y,1); int x= (1-tex.x)*16; int y= (1-tex.y)*18; //no bitwise ioerations on shadermodel 3 yet :( int mask=L[y]*2; for (int i = 0; i<16&& i <x; i++) mask*=0.5;output.r = ( frac(0.5*mask) < 0.1); return output; }