Texturing a whole landscape?

[tedlin01]

I have problems with texturing a whole landscape.. I have my colored texture which I apply with ExpandTexture. It works great and expands all over the chunks. Altough when I try to apply a normalmap-texture in the shader it only fits into each chunk each. How do I get it to stretch all over the landscape?

[SylvainTV]

I think the problem is that you're using TEXCOORD1. These are detail map coordinates which are per chunk. Try to use TEXCOORD0 for Normalmap sampling.

[tedlin01]

thank you, it solves the dish

[tedlin01]

I noticed that im using inTexCoords : TEXCOORD0 so it didnt solve the dish

[SylvainTV]

Well show us your code / shader

[tedlin01]

Code:

//-------
//------- Vertex Shaders --------
//-------

SSceneVertexToPixel Scene_Shadow_BumpVS( float4 inPos : POSITION, float2 inTexCoords : TEXCOORD0, float3 inNormal: NORMAL0, float3 inTangent : TANGENT)
{
     SSceneVertexToPixel Output = (SSceneVertexToPixel)0;

     float4x4 xLightWorldViewProjection = mul(mWorld, mLightViewProjection);
Output.ShadowMapSamplingPos = mul(inPos, xLightWorldViewProjection);

float3x3 worldToTangentSpace;
     worldToTangentSpace[0] = mul(inTangent,mWorld);
     worldToTangentSpace[1] = mul(cross(inTangent,inNormal),mWorld);
     worldToTangentSpace[2] = mul(inNormal,mWorld);

     Output.Light = normalize(mul(worldToTangentSpace,vLightDir));   
     Output.Position = mul(inPos, mWorldViewProjection);
     Output.RealDistance = Output.ShadowMapSamplingPos.z * INV_MAX_DEPTH;
     Output.TexCoords = inTexCoords;
Output.ObjectPosition =  mul(inPos, mWorld);

     return Output;   
}

//-------
//------- Pixel Shaders --------
//-------

SScenePixelToFrame Scene_Shadow_Bump_QualityPS(SSceneVertexToPixel PSIn)
{
SScenePixelToFrame Output = (SScenePixelToFrame)0;

// Get the texture, normal and diffuse colors
float4 texCol = tex2D(ColoredTextureSampler, PSIn.TexCoords);

float3 vNormal = float3(0,0,0);
if( PSIn.ObjectPosition.x < 0.0f && PSIn.ObjectPosition.z > 0.0f ) {       
vNormal = (2 * (tex2D(BumpMapSampler01, PSIn.TexCoords))) - 1.0;
}
else if( PSIn.ObjectPosition.x > 0.0f && PSIn.ObjectPosition.z > 0.0f ) {
vNormal = (2 * (tex2D(BumpMapSampler02, PSIn.TexCoords))) - 1.0;
}
else if( PSIn.ObjectPosition.x < 0.0f && PSIn.ObjectPosition.z < 0.0f ) {
vNormal = (2 * (tex2D(BumpMapSampler03, PSIn.TexCoords))) - 1.0;
}
else if( PSIn.ObjectPosition.x > 0.0f && PSIn.ObjectPosition.z < 0.0f ) {
vNormal = (2 * (tex2D(BumpMapSampler04, PSIn.TexCoords))) - 1.0;
}

float Diffuse = saturate(dot(PSIn.Light,vNormal)) + fAmbient;

// Mix the colors
Output.Color = Diffuse * texCol;
Output.Color.rgb *= vLightColor;
}

[AriusEso]

Can I please see the data structure for "SSceneVertexToPixel". I don't understand how the UV co-ords for your diffuse texture can work but not for normal. Just use the same co-ords. I need to see this structure to understand what you're doing. Thank you.

[tedlin01]

I guess I'm just doing everything wrong and maybe I missinformed you so if you have a look at this you maybe can tell me the right way to go


This is how I generate my terrain:

Code:

int iChunks = 4;
m_pLand->GenerateTerrain("Game\\Levels\\Version01\\heightmap.dds", cTV_PRECISION_AVERAGE, iChunks , iChunks, -iChunks*256/2, 0, -iChunks*256/2, false);

I then wan't to split the texture for all the landscape into 4 pieces to keep quality so I use ExpandTexture and it shows up great.
It works great to draw it in my shader too IF I use the semantic TEXTURE0.

Now I want a normalmap to work with this. How do I solve it best way?
I think the best way would have been if I could just do ExpandTextureEx(Layer_normal) and add them up just like the diffusetexture and then use TEXTURE01 semantic in the shader but there is no ExpandTextureEx for landscapes :/

.. So instead I thought that I put together all 4 pieces of my normalmaps and use SetTextureEx(1, texture) but then it doesnt scale over the whole landscape..

so instead I set each piece with the SetEffectTextureParameter and work with them in the shader. One for each bumpmap and then I check the worldposition of the pixel and fetches the the pixel from the correct normalmaptexture.


Anyway here's the code you asked for:

Code:

struct SSceneVertexToPixel
{
    float4 Position              : POSITION;

    float4 RealDistance          : TEXCOORD1;
    float2 TexCoords             : TEXCOORD2;
float3 Light : TEXCOORD3;
float4 ShadowMapSamplingPos : TEXCOORD4;
float4 ObjectPosition        : TEXCOORD5;
};

Code:

Texture xColoredTexture : TEXTURE0;
sampler ColoredTextureSampler = sampler_state { texture = <xColoredTexture> ; MaxAnisotropy = 16; magfilter = LINEAR; minfilter = LINEAR; mipfilter=LINEAR; AddressU = mirror; AddressV = mirror;};

texture BumpMap01;
sampler BumpMapSampler01 = sampler_state { texture = <BumpMap01> ; magfilter = LINEAR; minfilter = LINEAR; mipfilter=LINEAR; AddressU = clamp; AddressV = clamp;};

texture BumpMap02;
sampler BumpMapSampler02 = sampler_state { texture = <BumpMap02> ; magfilter = LINEAR; minfilter = LINEAR; mipfilter=LINEAR; AddressU = clamp; AddressV = clamp;};

texture BumpMap03;
sampler BumpMapSampler03 = sampler_state { texture = <BumpMap03> ; magfilter = LINEAR; minfilter = LINEAR; mipfilter=LINEAR; AddressU = clamp; AddressV = clamp;};

texture BumpMap04;
sampler BumpMapSampler04 = sampler_state { texture = <BumpMap04> ; magfilter = LINEAR; minfilter = LINEAR; mipfilter=LINEAR; AddressU = clamp; AddressV = clamp;};

[tedlin01]

ok, since I get no answer i Will try to resummon a question.

Question: How do I set several textures on a landscape when I am using ExpandTexture for the diffuse texture?

Right now it seems like if the ExpandTexture fooks up the SetTextureEx since it will start wrapping.