ZFX + Developia

Code: Alles auswählen

// heightmap laden
	ID3D10Resource* heightmaptex;
	D3DX10CreateTextureFromFile(m_device, L"heightmap.bmp", NULL, NULL, &heightmaptex, NULL);

Code: Alles auswählen

ID3D10Texture2D* heightmaptex;
D3DX10CreateTextureFromFile(m_device, L"heightmap.bmp", NULL, NULL, (ID3D10Resource**)&heightmaptex, NULL);

Code: Alles auswählen

float4x4 WorldMat;
float4x4 CamMat;

Texture2D Heightmap;

SamplerState displacementSampler     
{
Texture = (Heightmap);
AddressU = Clamp;
AddressV = Clamp;
};

// Vertexshader - Rückgabe
struct VSOut
{
    float4 Col : COLOR;              // vertex farbe
    float2 Tex : TEXCOORD;       // texturkoordinaten
    float4 Pos : SV_POSITION;    // vertex position
};

// Vertexshader
VSOut VS(float4 Pos : POSITION, float4 Col : COLOR,  float2 Tex : TEXCOORD)
{
    VSOut Output;
    //float4 height = tex2Dlod( displacementSampler, float4(Tex.x , Tex.y , 0,0  ) );

    Output.Pos = mul(Pos, WorldMat);          // World-Matrix-Transformation
    Output.Pos = mul(Output.Pos, CamMat); // Kameratransformation

    Output.Col = Col;    //Farbe unverändert lassen
    Output.Tex = Tex;  // Texturkoordinaten unverändert lassen

    return Output;    // -> Rasterizer Stage
}

Code: Alles auswählen

float4x4 WorldMat;
float4x4 CamMat;
Texture2D Heightmap;

sampler displacementSampler    //this sampler will be used to read (sample) the heightmap
{
AddressU = Clamp;
AddressV = Clamp;
};

// a struct for the vertex shader return value
struct VSOut
{
    float4 Col : COLOR;    // vertex color
    float2 Tex : TEXCOORD;       // texturkoordinaten
    float4 Pos : SV_POSITION;    // vertex screen coordinates
};

// the vertex shader
VSOut VS(float4 Pos : POSITION, float4 Col : COLOR,  float2 Tex : TEXCOORD)
{
    VSOut Output;
    float height = Heightmap.SampleLevel ( displacementSampler, Tex, 0 ).g; 

    Output.Pos = mul(Pos, WorldMat);    //World Transformation
    Output.Pos = mul(Output.Pos, CamMat); //View + Projection -Transformation

    Output.Pos.y = Output.Pos.y + height * 50; 

    Output.Col = Col;    // set the vertex color to the input's color
    Output.Tex = Tex;

    return Output;    //-> Rasterizer Stage
}

Code: Alles auswählen

	HRESULT hr;
	D3DX10_IMAGE_LOAD_INFO loadinfo;
	ID3D10Texture2D* heightmaptex;
	D3D10_MAPPED_TEXTURE2D mapped;
	
	loadinfo.Usage = D3D10_USAGE_STAGING;
	loadinfo.CpuAccessFlags = D3D10_CPU_ACCESS_READ;
	loadinfo.BindFlags = 0;

	
	hr = D3DX10CreateTextureFromFile(m_pDevice, L"heightmap.jpg", &loadinfo, NULL, (ID3D10Resource**)&heightmaptex, NULL);
	if(FAILED(hr))
	{
		std::string errdesc = ws2s(DXGetErrorDescription(hr)); 
		throw ISEN_Exception(__FILE__, __LINE__, "D3DX10CreateTextureFromFile", errdesc);
	}

	hr = heightmaptex->Map(0, D3D10_MAP_READ,0, &mapped);
	if(FAILED(hr))
	{
		std::string errdesc = ws2s(DXGetErrorDescription(hr)); 
		throw ISEN_Exception(__FILE__, __LINE__, "heightmaptex->Map", errdesc);
	}
	
	D3D10_TEXTURE2D_DESC desc;
    heightmaptex->GetDesc( &desc );


    const UINT WIDTH = desc.Width;
    const UINT HEIGHT = desc.Height;
	
    FLOAT* pTexels = (FLOAT*)mapped.pData;
    for( UINT row = 0; row < HEIGHT; row++ )
    {
      UINT rowStart = row * mapped.RowPitch/4;
      for( UINT col = 0; col < WIDTH; col++ )
      {
		int test = 0;
        test = pTexels[rowStart + col*4 + 0];	// Red
        pTexels[rowStart + col*4 + 1];			// Green
        pTexels[rowStart + col*4 + 2];			// Blue
        pTexels[rowStart + col*4 + 3];			// Alpha

		MessageBox(0, s2ws(floatToString(test)).c_str() ,L"-",1);
      }
    }


	 heightmaptex->Unmap(0);