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Fehler in GS-Bumpmapping (Specbumpfehler) #258288
03/29/09 14:14
03/29/09 14:14
Joined: Aug 2005
Posts: 512
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Schmerzmittel Offline OP
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Schmerzmittel  Offline OP
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Joined: Aug 2005
Posts: 512
Bayern
Hiho,

ich wundere mich gerade, warum bei den Shadern von GS die Specdatei nicht funktioniert.

Ich habe meine Textur als TGA, und die Bumpmap und die Specmap(im Alphachannel) auch als TGA.

Aber mit den Shadern von GS wird das Specular Lighting nicht dargestellt. Mit einem anderen Shader allerdings schon.
Kann das ein Bug sein, oder ist das so gewollt. Weil wenn das kein Bug ist, dann ist es ja egal ob ich eine Spec im Alphakanal habe oder nicht. Die wird ja dann sowieso nicht angezeigt.

Hier mal ein Screenshot als vergleich.



Das bild mit Richtig ist der Shader
Code:
 //--------------------------------------------------------------
// Diffuse and specular shader
// -------------------------------------------------------------

float4x4 matWorldViewProj;	
float4x4 matWorld;
float4 vecLightPos[8]; //light position
float4 vecLightColor[8]; //light position
float4 vecViewPos;
float4 vecFog;

texture entSkin1; //this is the color map
texture entSkin2; //this is the normal map

sampler ColorMapSampler = sampler_state
{
   Texture = <entSkin1>;
   MinFilter = Linear;
   MagFilter = Linear;
   MipFilter = Linear;   
   AddressU  = wrap;
   AddressV  = wrap;
};


sampler BumpMapSampler = sampler_state
{
   Texture = <entSkin2>;
   MinFilter = Linear;
   MagFilter = Linear;
   MipFilter = Linear;   
   AddressU  = wrap;
   AddressV  = wrap;
};


// -------------------------------------------------------------
// 2.0
// -------------------------------------------------------------


struct VS_OUTPUT0
{
    float4 Pos  : POSITION;
    float2 Tex : TEXCOORD0;
    float3 View : TEXCOORD1;
   
    float3 Light1 : TEXCOORD2;
    float Att1 : TEXCOORD3;
    
    float3 Light2 : TEXCOORD4;
    float Att2 : TEXCOORD5;

    float Fog : FOG;
};


VS_OUTPUT0 VS_PASS0(float4 Pos : POSITION, float2 texcoord0 : TEXCOORD0, float3 Normal : NORMAL, float3 Tangent : TEXCOORD0  )
{
    VS_OUTPUT0 Out = (VS_OUTPUT0)0;      
    Out.Pos = mul(Pos, matWorldViewProj);	// transform Position
    
    // compute the 3x3 tranform matrix 
    // to transform from world space to tangent space
    float3x3 worldToTangentSpace;
    worldToTangentSpace[0] = mul(Tangent, matWorld);
    worldToTangentSpace[1] = mul(cross(Tangent, Normal), matWorld);
    worldToTangentSpace[2] = mul(Normal, matWorld);
        
    Out.Tex = texcoord0.xy;

    float3 PosWorld = mul(Pos, matWorld);

    float3 Viewer = PosWorld - vecViewPos;						
    Out.View = mul(worldToTangentSpace, - Viewer);		// V

    //light 1	 
    float3 Light1 = PosWorld - vecLightPos[0]  ; 
    Out.Light1.xyz = mul(worldToTangentSpace, -Light1);	// L
       
    Out.Att1 = distance(PosWorld,vecLightPos[0])/vecLightPos[0].w;				// Point light
    
    //light 2	 
    float3 Light2 = PosWorld - vecLightPos[1]  ; 
    Out.Light2.xyz = mul(worldToTangentSpace, -Light2);	// L
       
    Out.Att2 = distance(PosWorld,vecLightPos[1])/vecLightPos[1].w;				// Point light

    float ofog = 1 - (distance(PosWorld, vecViewPos) - vecFog.x) * (vecFog.z);
    Out.Fog = ofog;	

   return Out;
}


struct PS_INPUT0
{
    float2 Tex : TEXCOORD0;
    float3 View : TEXCOORD1;
   
    float3 Light1 : TEXCOORD2;
    float Att1 : TEXCOORD3;
    
    float3 Light2 : TEXCOORD4;
    float Att2 : TEXCOORD5;
};


 float4 PS_PASS0( PS_INPUT0 psInStruct ):COLOR
{
   
    float4 color = tex2D(ColorMapSampler, psInStruct.Tex);					// fetch color map
    float3 bumpNormal = 2 * (tex2D(BumpMapSampler, psInStruct.Tex) - 0.5); // fetch bump map
    float4 gloss = tex2D( BumpMapSampler, psInStruct.Tex );
    
    float3 ViewDir = normalize(psInStruct.View);  

    //light1
    float3 LightDir1 = normalize(psInStruct.Light1);   
    float4 diff1 = saturate(dot(bumpNormal, LightDir1));    // diffuse component 
    float shadow1 = saturate(4 * diff1);
    float3 Reflect1 = normalize(2 * diff1 * bumpNormal - LightDir1);  // R
    float4 spec1 = pow(saturate(dot(Reflect1, ViewDir)), 15); 
    float4 Attenuation1 = saturate(dot(psInStruct.Att1, psInStruct.Att1));
    
    //light2
    float3 LightDir2 = normalize(psInStruct.Light2);     
    float4 diff2 = saturate(dot(bumpNormal, LightDir2));    // diffuse component 
    float shadow2 = saturate(4 * diff2);
    float3 Reflect2 = normalize(2 * diff2 * bumpNormal - LightDir2);  // R
    float4 spec2 = pow(saturate(dot(Reflect2, ViewDir)), 15); 
    float4 Attenuation2 = saturate(dot(psInStruct.Att2, psInStruct.Att2));

    return
    (  
       (0.3 * color) + //ambient
	    ((shadow1 * (color * diff1 + (spec1*gloss.w)) * (1 -Attenuation1))*vecLightColor[0])+ 
	    ((shadow2 * (color * diff2 + (spec2*gloss.w)) * (1 -Attenuation2))*vecLightColor[1])
    );	    
}


struct VS_OUTPUT1
{
    float4 Pos  : POSITION;
    float2 Tex : TEXCOORD0;
    float3 View : TEXCOORD1;
   
    float3 Light3 : TEXCOORD2;
    float Att3 : TEXCOORD3;
    
    float3 Light4 : TEXCOORD4;
    float Att4 : TEXCOORD5;

    float Fog : FOG;
};


VS_OUTPUT1 VS_PASS1(float4 Pos : POSITION, float2 texcoord0 : TEXCOORD0, float3 Normal : NORMAL, float3 Tangent : TEXCOORD0  )
{
    VS_OUTPUT1 Out = (VS_OUTPUT1)0;      
    Out.Pos = mul(Pos, matWorldViewProj);	// transform Position
    
    // compute the 3x3 tranform matrix 
    // to transform from world space to tangent space
    float3x3 worldToTangentSpace;
    worldToTangentSpace[0] = mul(Tangent, matWorld);
    worldToTangentSpace[1] = mul(cross(Tangent, Normal), matWorld);
    worldToTangentSpace[2] = mul(Normal, matWorld);
        
    Out.Tex = texcoord0.xy;

    float3 PosWorld = mul(Pos, matWorld);

    float3 Viewer = PosWorld - vecViewPos;						
    Out.View = mul(worldToTangentSpace, -Viewer);		// V
 
    //light 3	 
    float3 Light3 = PosWorld - vecLightPos[2]  ; 
    Out.Light3.xyz = mul(worldToTangentSpace, -Light3);	// L
       
    Out.Att3 = distance(PosWorld,vecLightPos[2])/vecLightPos[2].w;				// Point light
  
    
    //light 4	 
    float3 Light4 = PosWorld - vecLightPos[3]  ; 
    Out.Light4.xyz = mul(worldToTangentSpace, -Light4);	// L
       
    Out.Att4 = distance(PosWorld,vecLightPos[3])/vecLightPos[3].w;				// Point light

    float ofog = 1 - (distance(PosWorld, vecViewPos) - vecFog.x) * (vecFog.z);
    Out.Fog = ofog;	

    return Out;
}


struct PS_INPUT1
{
    float2 Tex : TEXCOORD0;
    float3 View : TEXCOORD1;
   
    float3 Light3 : TEXCOORD2;
    float Att3 : TEXCOORD3;
    
    float3 Light4 : TEXCOORD4;
    float Att4 : TEXCOORD5;
};


float4 PS_PASS1( PS_INPUT1 psInStruct ):COLOR
{
   
    float4 color = tex2D(ColorMapSampler, psInStruct.Tex);					// fetch color map
    float3 bumpNormal = 2 * (tex2D(BumpMapSampler, psInStruct.Tex) - 0.5); // fetch bump map
    float4 gloss = tex2D( BumpMapSampler, psInStruct.Tex );
     
    float3 ViewDir = normalize(psInStruct.View);

    //light3
    float3 LightDir3 = normalize(psInStruct.Light3);  
    float4 diff3 = saturate(dot(bumpNormal, LightDir3));    // diffuse component 
    float shadow3 = saturate(4 * diff3);
    float3 Reflect3 = normalize(2 * diff3 * bumpNormal - LightDir3);  // R
    float4 spec3 = pow(saturate(dot(Reflect3, ViewDir)), 15); 
    float4 Attenuation3 = saturate(dot(psInStruct.Att3, psInStruct.Att3));
   
    //light4
    float3 LightDir4 = normalize(psInStruct.Light4);   
    float4 diff4 = saturate(dot(bumpNormal, LightDir4));    // diffuse component 
    float shadow4 = saturate(4 * diff4);
    float3 Reflect4 = normalize(2 * diff4 * bumpNormal - LightDir4);  // R
    float4 spec4 = pow(saturate(dot(Reflect4, ViewDir)), 15); 
    float4 Attenuation4 = saturate(dot(psInStruct.Att4, psInStruct.Att4));

    return
    (  
	    ((shadow3 * (color * diff3 + (spec3*gloss.w)) * (1 -Attenuation3))*vecLightColor[2])+
	    ((shadow4 * (color * diff4 + (spec4*gloss.w)) * (1 -Attenuation4))*vecLightColor[3])

    );	    
}



struct VS_OUTPUT2
{
    float4 Pos  : POSITION;
    float2 Tex : TEXCOORD0;
    float3 View : TEXCOORD1;
   
    float3 Light5 : TEXCOORD2;
    float Att5 : TEXCOORD3;
   
    float3 Light6 : TEXCOORD4;
    float Att6 : TEXCOORD5;

    float Fog : FOG;
};


VS_OUTPUT2 VS_PASS2(float4 Pos : POSITION, float2 texcoord0 : TEXCOORD0, float3 Normal : NORMAL, float3 Tangent : TEXCOORD0  )
{
    VS_OUTPUT2 Out = (VS_OUTPUT2)0;      
    Out.Pos = mul(Pos, matWorldViewProj);	// transform Position
    
    // compute the 3x3 tranform matrix 
    // to transform from world space to tangent space
    float3x3 worldToTangentSpace;
    worldToTangentSpace[0] = mul(Tangent, matWorld);
    worldToTangentSpace[1] = mul(cross(Tangent, Normal), matWorld);
    worldToTangentSpace[2] = mul(Normal, matWorld);
        
    Out.Tex = texcoord0.xy;

    float3 PosWorld = mul(Pos, matWorld);

    float3 Viewer = PosWorld - vecViewPos;						
    Out.View = mul(worldToTangentSpace, -Viewer);		// V

	//light 5	 
    float3 Light5 = PosWorld - vecLightPos[4]  ; 
    Out.Light5.xyz = mul(worldToTangentSpace, -Light5);	// L
       
    Out.Att5 = distance(PosWorld,vecLightPos[4])/vecLightPos[4].w;				// Point light
    
    //light 6	 
    float3 Light6 = PosWorld - vecLightPos[5]  ; 
    Out.Light6.xyz = mul(worldToTangentSpace, -Light6);	// L
       
    Out.Att6 = distance(PosWorld,vecLightPos[5])/vecLightPos[5].w;				// Point light

	float ofog = 1 - (distance(PosWorld, vecViewPos) - vecFog.x) * (vecFog.z);
    	Out.Fog = ofog;

   return Out;
}



struct PS_INPUT2
{
    float2 Tex : TEXCOORD0;
    float3 View : TEXCOORD1;
   
    float3 Light5 : TEXCOORD2;
    float Att5 : TEXCOORD3;
    
    float3 Light6 : TEXCOORD4;
    float Att6 : TEXCOORD5;
};


float4 PS_PASS2( PS_INPUT2 psInStruct ):COLOR
{
   
    float4 color = tex2D(ColorMapSampler, psInStruct.Tex);					// fetch color map
    float3 bumpNormal = 2 * (tex2D(BumpMapSampler, psInStruct.Tex) - 0.5); // fetch bump map
    float4 gloss = tex2D( BumpMapSampler, psInStruct.Tex );
    
    float3 ViewDir = normalize(psInStruct.View);

    //light5
    float3 LightDir5 = normalize(psInStruct.Light5); 
    float4 diff5 = saturate(dot(bumpNormal, LightDir5));    // diffuse component 
    float shadow5 = saturate(4 * diff5);
    float3 Reflect5 = normalize(2 * diff5 * bumpNormal - LightDir5);  // R
    float4 spec5 = pow(saturate(dot(Reflect5, ViewDir)), 15); 
    float4 Attenuation5 = saturate(dot(psInStruct.Att5, psInStruct.Att5));
    
    //light2
    float3 LightDir6 = normalize(psInStruct.Light6);
    float4 diff6 = saturate(dot(bumpNormal, LightDir6));    // diffuse component 
    float shadow6 = saturate(4 * diff6);
    float3 Reflect6 = normalize(2 * diff6 * bumpNormal - LightDir6);  // R
    float4 spec6 = pow(saturate(dot(Reflect6, ViewDir)), 15); 
    float4 Attenuation6 = saturate(dot(psInStruct.Att6, psInStruct.Att6));

    return
    (  
	    ((shadow5 * (color * diff5 + (spec5*gloss.w)) * (1 -Attenuation5))*vecLightColor[4])+ 
	    ((shadow6 * (color * diff6 + (spec6*gloss.w)) * (1 -Attenuation6))*vecLightColor[5])
	   
    );	    
}



// -------------------------------------------------------------
// 1.1
// -------------------------------------------------------------

float3x3 matTangent;
float4x4 matWorldView;
float4 vecSunDir;

float4 DoTransform(float4 Pos)
{
	return mul(Pos,matWorldViewProj);
}

float DoFog(float4 Pos)
{
	float3 P = mul(Pos,matWorldView); // convert vector to view space to get it's depth (.z)
   	return saturate((vecFog.y-P.z) * vecFog.z); // apply the linear fog formula
}

float4 DoPos(float4 Pos)
{
	return (mul(Pos,matWorld));
}
float3 DoPos(float3 Pos)
{
	return (mul(Pos,matWorld));
}

void CreateTangents(float3 inNormal,float3 inTangent)
{
	matTangent[0] = DoPos(inTangent);
	matTangent[1] = DoPos(cross(inTangent,inNormal));	// binormal
	matTangent[2] = DoPos(inNormal);
}

float3 DoTangent(float3 inVector)
{
	return normalize(mul(matTangent,inVector));
}

struct out_bump
{
    	float4 Pos:     POSITION;
    	float  Fog:	FOG;
    	float4 Color:	COLOR;
    	float2 Tex:   	TEXCOORD0;
    	float2 Bump:   	TEXCOORD1;
    	float3 Normal:	TEXCOORD2;
    	float3 Light:	TEXCOORD3;
};

out_bump vs_bump( in float4 inPos: POSITION, in float3 inNormal: NORMAL, in float2 inTex: TEXCOORD0, in float3 inTangent: TEXCOORD2)
{
   	out_bump Out;

	Out.Pos	= DoTransform(inPos);
	Out.Tex	= inTex;
	Out.Bump = inTex; // different coordinates required for ps_1_1
        Out.Color = float4(1.0,1.0,1.0,1.0);
	Out.Fog	= DoFog(inPos);
		
	CreateTangents(inNormal,inTangent);
	float3 N = matTangent[2];
		
	// transform the output values into the 0..1 range
	Out.Light = DoTangent(-vecSunDir) * 0.5 + 0.5;
	Out.Normal = DoTangent(N) * 0.5 + 0.5;

	return Out;		
}


float4 ps_bump(out_bump In): COLOR
{
	float4 base = tex2D(ColorMapSampler,In.Tex);
	float3 bumpNormal = tex2D(BumpMapSampler,In.Bump);
	float diffuse = saturate(dot(In.Light*2 - 1,bumpNormal*2 - 1));	
	diffuse *= saturate(4 * dot(In.Light*2 - 1,In.Normal*2 - 1));

	return base * diffuse;
}


// -------------------------------------------------------------
// techniques//
// -------------------------------------------------------------

// 2.0
technique SpecularNormalMapping_20
{
    pass P0
    {
    	 alphablendenable=false;
   	 srcblend=zero;
        // compile shaders
        VertexShader = compile vs_2_0 VS_PASS0();
        PixelShader  = compile ps_2_0 PS_PASS0();
    }
   
    pass P1
    {
    	 //blend second pass additively with first 
    	 alphablendenable=true;
   	 srcblend=one;
    	 destblend=one;
    	 
       // compile shaders
       VertexShader = compile vs_2_0 VS_PASS1();
       PixelShader  = compile ps_2_0 PS_PASS1();
    } 
    
    pass P2
    {
    	 //blend second pass additively with first and second 
    	 alphablendenable=true;
   	 srcblend=one;
    	 destblend=one;
    	 
       // compile shaders
       VertexShader = compile vs_2_0 VS_PASS2();
       PixelShader  = compile ps_2_0 PS_PASS2();
    } 
}

// 1.1
technique SpecularNormalMapping_11
{
	pass P0
	{		
		VertexShader = compile vs_1_1 vs_bump();
		PixelShader  = compile ps_1_1 ps_bump();
	}
}

// Fallback; If nothing works
technique fallback { pass one { } }




Das mit dem falschen Speclighting ist der Gamestudioahder.

Wäre nett, wenn man da was ändern könnte


A7 Com V7.80
Re: Fehler in GS-Bumpmapping (Specbumpfehler) [Re: Schmerzmittel] #258475
03/30/09 19:43
03/30/09 19:43
Joined: Aug 2005
Posts: 512
Bayern
Schmerzmittel Offline OP
User
Schmerzmittel  Offline OP
User

Joined: Aug 2005
Posts: 512
Bayern
Weis denn niemand Rat???


A7 Com V7.80
Re: Fehler in GS-Bumpmapping (Specbumpfehler) [Re: Schmerzmittel] #259427
04/06/09 06:06
04/06/09 06:06
Joined: Jul 2000
Posts: 27,986
Frankfurt
jcl Offline

Chief Engineer
jcl  Offline

Chief Engineer

Joined: Jul 2000
Posts: 27,986
Frankfurt
Soweit ich Ihren Shadercode verstehe, erwartet er den Specular Alphakanal auf der Normalmap statt auf der Textur. Das kann nicht funktionieren. Normal Alpha ist für die Height Map vorgesehen, nicht für die Specular Map.

Re: Fehler in GS-Bumpmapping (Specbumpfehler) [Re: jcl] #259704
04/07/09 09:55
04/07/09 09:55
Joined: Aug 2005
Posts: 512
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Schmerzmittel Offline OP
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Schmerzmittel  Offline OP
User

Joined: Aug 2005
Posts: 512
Bayern
Das heißt, dass es mit dem GS Shader nicht funktioniert oder versteh ich das falsch? Oder muss die Specmap in den Alphakanal der Textur? Bin jetzt etwas verwirrt. whistle


EDIT:
Ich hab jetzt mal probiert, die Specmap in den Alphakanal der Textur zu legen, aber dann ist das Modell komplett Transparent.
Das steht im Handbuch:

Quote:
*SM: Supports a specular map on the texture alpha channel. A specular map determines the 'shinyness' of the texture. On alpha = 100 the texture is shiny, on alpha = 0 the texture is matt. If the texture has no alpha channel, 100% shinyness is assumed.


Oder um es genauer zu sagen, weil es auch im Handbuch nicht steht (also für Dummies :o):
Welches Format muss die Textur haben und wo soll die Specmap rein. Ein kleins Tut wär super, weil ich das noch immer nicht hinbekomme.

Last edited by Schmerzmittel; 04/07/09 10:22.

A7 Com V7.80

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