media @ VU
[]
readme
course
preface
I
1
2
II
3
4
III
5
6
7
IV
8
9
10
V
11
12
afterthoughts
appendix
references
examples
resources
_
// sepia
float time=0;
float sampleDist = 1.0f/512.0f; // distance one pixel in u/v
sampler2D image : register(s0);
-----------------------------------------------------------------------------
// SepiaTone.psh
//
// Converts image to sepia tone by moving color into YIQ space first.
// Algo:
// 1) find Intensity
// 2) load intensity into Y
// 3) load 2 and 0 into I and Q respectively
// 4) transform Intenty,2, 0.0 color back to RGB.
//
//
// Marwan Y. Ansari - ATI Research, Inc. - 2002
-----------------------------------------------------------------------------//
float4 main(
float4 Pos : POSITION,
float2 texCoord: TEXCOORD0) : COLOR
{
float4 c = .5;
float4 currFrameSample;
float4 currFrameSampleYIQ;
float4x4 YIQMatrix = { 0.299, 0.587, 0.114,0,
0.596, -0.275, -0.321,0,
0.212, -0.523, 0.311,0,
0,0,0,1};
float4x4 inverseYIQ ={ 1.0000000000000000000, .95568806036115671171, .61985809445637075388, 0,
1.0000000000000000000, -.27158179694405859326, -.64687381613840131330, 0,
1.0000000000000000000, -1.1081773266826619523, 1.7050645599191817149, 0,
0,0,0,1 };
// get sample
currFrameSample = tex2D( image, texCoord);
// convert to YIQ space
currFrameSampleYIQ = mul(YIQMatrix , currFrameSample);
currFrameSampleYIQ.y = 0.2; // convert YIQ color to sepia tone
currFrameSampleYIQ.z = 0.0;
// convert back to RGB
c = mul( inverseYIQ, currFrameSampleYIQ);
return c;
}
<phrase dir=b turn=0 id=_ level=_ right="haven t~nI seen this~nbefore?"/>
<phrase dir=b turn=0 id=_ level=_ left="I am glad~nyou re paying~nattention!!">
<gesture dir=b id=_ level=_ right=0 pause=500/>
<gesture dir=b id=_ level=_ left=0 pause=600/>
[]
readme
course
preface
I
1
2
II
3
4
III
5
6
7
IV
8
9
10
V
11
12
afterthoughts
appendix
references
examples
resources
_
(C) A. Eliëns
9/8/2006
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.