HALF2 has the .x and .y properties. So just do something like HALF2
leftCoord = ZeroTexCoord; leftCoord.x += left_pos; Then sample the color at
the new coordinate. However you should note, that the color you will be
returning in that function will be for the original pixel location. Shaders
go from Top left corner to Top Right Corner and repeats until it reaches the
bottom most row.
This means you'll have to work in reverse by sampling left or right towards
the "original" pixel, instead of working from the original pixel outward. It
would also be best to use different shader passes for each blue and red of
the anaglyph.
On Tue, Nov 9, 2010 at 8:34 AM, AndreaZzZ <andrea_s...@mail.ru> wrote:
> I'm currently doing anaglyph. How to move left and right along the x axis,
> my shader moves along the axes xy as correct?
> Code:
>
> sampler BaseTextureSampler : register( s0 );
>
> HALF4 main( HALF2 ZeroTexCoord : TEXCOORD0 ) : COLOR
> {
> float left_pos = 0.008;
> float right_pos = -0.008;
>
> float4 left = tex2D(BaseTextureSampler, ZeroTexCoord + left_pos);
> float4 right = tex2D(BaseTextureSampler, ZeroTexCoord + right_pos);
>
> float r = 0.7*left.g + 0.3*left.b;
> float g = 1*right.g;
> float b = 1*right.b;
>
> return float4(r, g, b, 1);
> }
>
>
> Sorry for my English because English isn't my native language.
> _______________________________________________
> To unsubscribe, edit your list preferences, or view the list archives,
> please visit:
> http://list.valvesoftware.com/mailman/listinfo/hlcoders
>
>
_______________________________________________
To unsubscribe, edit your list preferences, or view the list archives, please
visit:
http://list.valvesoftware.com/mailman/listinfo/hlcoders
