Hello, I'm clueless when it comes to shaders, which is why I "borrow" everyone elses! lol
I have this vertex fur shader (below) which I plan to add to my game engine, but I'm having troubles with setting the color of the fur.
I know that the FurColor vector controls the color, but what I'm after is to replace this with a 1x1 or 2x2 texture lookup so that each object can use the same shader yet be different colours.
Right now, the shader only uses whatever texture is applied to stage 0, (the default) but I'd like to load this lookup texture into stage 1 and use that to set the color instead.
Like I said I'm clueless when it comes to shaders and would like some help! Pointing me in the right direction is fine, but doing it for me is even better!
lol
//--------------------------------
// VERTEX FUR
//--------------------------------
// By Evolved
// http://www.vector3r.com/
//--------------------------------
//--------------------------------
// un-tweaks
//--------------------------------
matrix WorldVP:WorldViewProjection;
matrix World:World;
//--------------------------------
// tweaks
//--------------------------------
float4 FurColor = {0.5f, 0.5f, 0.5f, 1.0f};
float FurHeight = 0.3f;
float4 LightPosition = {0.0f, 50.0f, -100.0f, 1.0f};
float4 LightColor = {1.0f, 1.0f, 1.0f, 1.0f};
float LightRange = 125.0f;
float4 Ambient = {0.3f, 0.3f, 0.3f, 1.0f};
float U = 1.0f;
float V = 1.0f;
//--------------------------------
// Textures
//--------------------------------
texture FurTX
<
string Name="";
>;
sampler2D Fur = sampler_state
{
texture = <FurTX>;
};
//--------------------------------
// structs
//--------------------------------
struct Input
{
float4 Pos:POSITION;
float2 UV:TEXCOORD;
float3 Normal:NORMAL;
};
struct Output
{
float4 OPos:POSITION;
float2 Tex:TEXCOORD0;
float4 Diffuse:COLOR0;
};
//--------------------------------
// vertex shader
//--------------------------------
Output VS(Input IN,uniform float Dir)
{
Output OUT;
float4 VPos;
VPos.xyz=IN.Pos+(IN.Normal*(Dir*FurHeight));VPos.w=IN.Pos.w;
OUT.OPos=mul(VPos,WorldVP);
OUT.Tex=IN.UV*float2(U,V);
float3 WNor=mul(IN.Normal,World); WNor=normalize(WNor);
float3 WPos=mul(IN.Pos,World);
float3 LPos=LightPosition-WPos;
float4 Light=max(saturate(0.025f+mul(LPos,WNor)*0.025f),0);
float Dis=max(saturate(1-(length(LPos)/LightRange)),0);
OUT.Diffuse=(Ambient+(Light*Dis*LightColor))*FurColor;
return OUT;
}
//-----------------
// techniques
//-----------------
technique VFur
{
pass p0
{
vertexShader = compile vs_1_1 VS(0);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
SRCBLEND = SRCALPHA;
DESTBLEND = ZERO;
ALPHABLENDENABLE = TRUE;
BLENDOP = ADD;
}
pass p1
{
vertexShader = compile vs_1_1 VS(1);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
SRCBLEND = SRCALPHA;
DESTBLEND = ONE;
ALPHABLENDENABLE = TRUE;
BLENDOP = ADD;
}
pass p2
{
vertexShader = compile vs_1_1 VS(2);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
}
pass p3
{
vertexShader = compile vs_1_1 VS(3);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
}
pass p4
{
vertexShader = compile vs_1_1 VS(4);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
}
pass p5
{
vertexShader = compile vs_1_1 VS(5);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
}
pass p6
{
vertexShader = compile vs_1_1 VS(6);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
}
pass p7
{
vertexShader = compile vs_1_1 VS(7);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
}
pass p8
{
vertexShader = compile vs_1_1 VS(8);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
}
pass p9
{
vertexShader = compile vs_1_1 VS(9);
Sampler[0] = <Fur>;
ColorOp[0] = MODULATE;
ColorArg1[0] = TEXTURE;
}
}My signature is NOT a moderator plaything! Stop changing it!
