Question

任何人都可以告诉我为什么会收到此错误：

当前顶点声明不包含当前顶点着色器所需的所有元素。 TextureCoordinate0缺失。

使用标准的顶点着色器，一切都很好。

这是我的着色器文件：

float4x4 World; 
float4x4 View; 
float4x4 Projection; 
float4 color; 
float seaLevel; 
texture myTexture; 
float maxHeight = 128; 
float height; 


sampler2D mySampler = sampler_state 
{ 
Texture = <myTexture>; 
MinFilter = Point; 
MagFilter = Point; 
MipFilter = Point; 
AddressU = Clamp; 
AddressV = Clamp; 
}; 

struct VertexShaderInput 
{ 
float4 Position : POSITION0; 
}; 
struct VertexShaderOutput 
{ 
float4 Position : POSITION0; 
}; 


struct VS_INPUT 
{
    float4 position : POSITION;
    float4 uv : TEXCOORD0;
};

struct VS_OUTPUT
{
     float4 position  : POSITION;
     float4 uv : TEXCOORD0;
     float4 worldPos : TEXCOORD1;
};


VS_OUTPUT Transform(VS_INPUT In)
{
      VS_OUTPUT Out = (VS_OUTPUT)0;    
      float4x4 viewProj = mul(View, Projection);
      float4x4 worldViewProj= mul(World, viewProj);
      float height = tex2Dlod ( mySampler, float4(In.uv.xy , 0 , 0 ) );
      In.position.y = height * maxHeight;
      Out.worldPos = mul(In.position, World);
      Out.position = mul( In.position , worldViewProj);
      Out.uv = In.uv;
      return Out;
}


VertexShaderOutput VertexShaderFunction(VertexShaderInput input) 
{ 

    VertexShaderOutput output; 

    float4 worldPosition = mul(input.Position, World); 



    worldPosition = float4(normalize(worldPosition.xyz) * seaLevel, 1); 

    float4 viewPosition = mul(worldPosition, View); 
    output.Position = mul(viewPosition, Projection); 

    return output; 
} 




float4 PixelShaderFunction(VertexShaderOutput input) : COLOR0 
{ 

return color; 
} 

technique Technique1 
{ 
pass Pass1 
{ 


VertexShader = compile vs_3_0 Transform(); 
PixelShader = compile ps_3_0 PixelShaderFunction(); 
} 
}

Answer 1

您尝试绘制的模型具有不包含纹理坐标的顶点。

您的顶点着色器需要纹理坐标才能工作，如技术中指定的顶点着色器所使用的结构中所示。

struct VS_INPUT 
{
    float4 position : POSITION;
    float4 uv : TEXCOORD0;
};

technique Technique1 
{ 
    pass Pass1 
    {     
        VertexShader = compile vs_3_0 Transform();

所以，你有两个选择：

1）从VS_INPUT

中删除“uv”

2）将纹理坐标字段添加到模型使用的顶点。

Answer 2

我通过在3D Studio Max中打开模型，添加“UVM Map”修改器并导出回来解决了同样的问题。不是一个令人满意的解决方案，但为我工作。

来自VertexShader的XNA / HLSL高度图

2 个答案: