how to change width of a Vertex shader??

Hi im trying to change the width of a Vertex shader it deals with the overlay intel rings the thickness is to much i would like to half the size of them, any help would be great thanks
code is bellow there is more to the file if its needed

Code:

//////////////////////////////////////////////////////////////////////////////
// Vertex shader

RangeVS_OUTPUT RangeVS(
#ifndef XBOX
    RangeVS_INPUT In
#else
    int index : INDEX
#endif
)
{
#ifdef XBOX
    RangeVS_INPUT In		= CreateRangeVertexInput( index );
#endif 

	// Output from vertex shader
	RangeVS_OUTPUT Out		= (RangeVS_OUTPUT)0;
	
	// Scale the vertex based on requested range, and add in the instanced position
#if FEATHER_OUT
	In.Vertex.xy			*= dot( In.AlphaScalar.yz, float2( In.Radius.y, In.Radius.y + FogIntel.z ) );
#endif
#if FEATHER_IN
	In.Vertex.xy			*= dot( In.AlphaScalar.yz, float2( max( 0.0f, In.Radius.y - FogIntel.z ), In.Radius.y ) );
#endif
	In.Vertex.xy			+= In.Position.xy - 1;
	
	// Scale the values by the map dimensions and then map to [-1,1]
	In.Vertex.xy			*= FogIntel.xy;
	In.Vertex.xy			= In.Vertex.xy * 2 - 1;
		
	// Transform vertex to homogenous clip space
	Out.Position			= float4( In.Vertex.x, -In.Vertex.y, 1.0f, 1.0f );
#if FEATHER_OUT
	Out.Color				= In.AlphaScalar.xxxx;
#endif
#if FEATHER_IN
	Out.Color				= float4( 1.0f, 1.0f, 1.0f, 1.0f ) - In.AlphaScalar.xxxx;
#endif
	
	// Return our finished product
	return Out;
}


//////////////////////////////////////////////////////////////////////////////

well, just divide the position by two before you transform it into viewprojection space.


Remember, the ordering of matrix is typically: Scaling*Rotation*Translation*View*Projection

So, add the scaling first, then do what ever else you want to do.

Originally Posted by smasherprog

well, just divide the position by two before you transform it into viewprojection space.


Remember, the ordering of matrix is typically: Scaling*Rotation*Translation*View*Projection

So, add the scaling first, then do what ever else you want to do.

would you mind showing me how i don't really under stand how shaders work? if you could scale it by 0.5 that would be great thanks,

If you do not understand vertex shaders then my guess is you should not be messing around in them yet. Read some books about vertex and pixel shaders and then you might be able to move forward. There are also many sites on the internet that talk about vertex and pixel shaders. The DirectX SDK docs illustrate where in the pipeline vertex and pixel shaders are used and how they fit into the overall model.

Originally Posted by Bubba

If you do not understand vertex shaders then my guess is you should not be messing around in them yet. Read some books about vertex and pixel shaders and then you might be able to move forward. There are also many sites on the internet that talk about vertex and pixel shaders. The DirectX SDK docs illustrate where in the pipeline vertex and pixel shaders are used and how they fit into the overall model.

thanks but im not looking to learn about vertex shaders at the moment im learning lua this is for a mod for a game i made people using my mod wanted the radius rings cut in half in thinness so if some one could make the changes needed i would be much appreciated

thanks but im not looking to learn about vertex shaders at the moment im learning lua this is for a mod for a game i made people using my mod wanted the radius rings cut in half in thinness so if some one could make the changes needed i would be much appreciated

That's not how things work around here. We don't do any work for people. This site is intended to help people which sort of means they want to help themselves. We do not spit out code solutions or fix people's code here.

Unless you show some effort I will close this thread.

Originally Posted by Bubba

That's not how things work around here. We don't do any work for people. This site is intended to help people which sort of means they want to help themselves. We do not spit out code solutions or fix people's code here.

Unless you show some effort I will close this thread.

i see how it works dont worry then and delete my account good by.