Either I'm doing it completely wrong, or the manual is wrong about how to use vecSkill1-4 in shader code.

according to the manual:

Quote:


float4 vecskill1; // shader code: define the vector
...
float fValue = vecSkill1.x; // fValue now contains 1.5




and here's one of my shader codes, done exactly the same way:

Code:

float4 vecSkill1;

float contrast= vecSkill1.x; //a tweakable

//YOU DON'T WANNA SCREW WITH THIS STUFF! ;)
float4 vecViewPort;
texture TargetMap;
sampler TargetSampler= sampler_state {texture= <TargetMap>;};

//the shader function
float4 Shader_PPS(float2 tex :TEXCOORD0):COLOR0
{
	float4 color= float4(0.5,0.5,0.5,1.0);
		color= tex2D(TargetSampler,tex.xy);
		if(color.r < (contrast / 100)) //if the red value of each pixel is less than 65 / 100= 0.65...
			color.r= 0.0; //nullify it.
		if(color.g < (contrast / 100)) //same here with green
			color.g= 0.0; //ditto
		if(color.b < (contrast / 100)) //"
			color.b= 0.0; //"
		return color; //give the result; render it to the screen.
}

technique postprocess
{
	pass p0
	{
		Lighting= False;
		PixelShader= compile ps_2_0 Shader_PPS(); //compile the shader function using Shader Model 2.0.
	}
}


When I try to run my program, however, I get an "Error in effect" message (about 3 times) saying that my float definitions (the ones with vecSkill1.x) have to be literals.

Am I doing this completely wrong?

Code:
void main()
{
    cout << "I am MrCode,";
    cout << "hear me roar!";
    system("PAUSE");
}