topical media & game development

talk show tell print


shader(s) -- gray

  // identity 
  float time=0;
  float sampleDist = 1.0f/512.0f;  // distance one pixel in u/v
  sampler2D image : register(s0);
  float4 main(
  	float4 Pos : POSITION,
  	float2 texCoord: TEXCOORD0) : COLOR 
  	float4 img = tex2D(image, texCoord);
  	// convert to gray 
  	float4 sum = dot(img, float4(0.30f, 0.59f, 0.11f, 0.0f));
  	sum.a=img.a; // keep alpha
  	return lerp(img,sum,time);	 

(C) Æliens 20/08/2009

You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.