Hello, I have tried out the following Pixel shader code to create a Mosaic Effect when a texture is applied for a simple rectangle. (Clamp U, V addressing and Linear Filtering is being used for the texture) : sampler2D s0 : register( s0 ); float4 mainPS( float2 vTex : TEXCOORD0 ) : COLOR0 { return tex2D( s0, saturate( floor ( vTex * 10 ) * 0.1 ) /* - 2.0f */ ); } Although the above pixel shader produces a Mosaic effect, a few lines having some random color appear along the edges of some rectangles (These lines can be clearly seen when a complex texture is applied to the rectangle and "- 2.0f" is uncommented in the last line in the pixel shader in order to produce a black frame). Screen Shots of the output and the original texture are available at the following link : http://picasaweb.google.com/dhirendvs/ProblemOfLinesInMosaicEffect The output is being rendered using an ATI X700/X800 Graphics Card. I don't know whether this problem is due to the graphics card. Can anybody please explain to me how to solve this problem of lines in the output? Regards, Dhiren Sarup.
On Mon, 28 Jan 2008 20:35:22 -0800 (PST), Dhiren wrote: > I have tried out the following Pixel shader code to create a Mosaic > Effect when a texture is applied for a simple rectangle. (Clamp U, V > addressing and Linear Filtering is being used for the texture) : I'd recommend posting this in ../graphics. The sdk newsgroup is relatively inactive and the video newsgroup is for DirectShow questions. -- Please read this before replying: 1. Dshow & posting help: http://tmhare.mvps.org/help.htm 2. Trim & respond inline (please don't top post or snip everything) 3. Benefit others: follow up if you are helped or you found a solution
