DiffuseUVMaterial::DiffuseUVMaterial() : DiffuseMaterial()
{
setAlbedo([this](const RayIntersection & isect) {
float u = clamp01(isect.u);
float v = clamp01(isect.v);
return RGBColor(u, v, 0.0f);
});
}
DiffuseTextureMaterial::DiffuseTextureMaterial( std::shared_ptr<SurfaceTexture> & tex )
: DiffuseMaterial(), texture(tex)
{
setAlbedo([this](const RayIntersection & isect) {
float u = clamp01(isect.u);
float v = clamp01(isect.v);
return texture->image.sampleRGB(u, v);
});
}
DiffuseCheckerBoardMaterial::DiffuseCheckerBoardMaterial(float r1, float g1, float b1,
float r2, float g2, float b2)
: Material()
{
RGBColor color1(r1, g1, b1);
RGBColor color2(r2, g2, b2);
setAlbedo([color1, color2, this](const RayIntersection & isect) {
return (bool(int(floorf(isect.position.x / gridSize)) % 2) ^
//bool(int(floorf(isect.position.y / gridSize)) % 2) ^
bool(int(floorf(isect.position.z / gridSize)) % 2))
? color1 : color2;
});
}
void VolSkin::init( int width, int height, TetMesh *tm )
{
this->width = width;
this->height = height;
tetMesh = tm;
// TEMP initialize volume data
cudaExtent volumeSize = make_cudaExtent(128, 128, 128);
//cudaExtent volumeSize = make_cudaExtent(256, 256, 256);
// generate raw volume data
float *h_densityData = (float*)malloc( sizeof(float)*volumeSize.width*volumeSize.height*volumeSize.depth );
math::PerlinNoise pn;
pn.setDepth( 4 );
pn.setFrequency(3.0f);
//pn.setInflection(true);
for( int k=0;k<volumeSize.depth;++k )
for( int j=0;j<volumeSize.height;++j )
for( int i=0;i<volumeSize.width;++i )
{
int index = k*volumeSize.width*volumeSize.height + j*volumeSize.width + i;
math::Vec3f uvw( (float)(i)/(float)(volumeSize.width),
(float)(j)/(float)(volumeSize.height),
(float)(k)/(float)(volumeSize.depth));
float t = (float)(j)/(float)(volumeSize.height);
//h_densityData[index] = 0.5f;
//h_densityData[index] = (1.0f-t)*1.0f;
h_densityData[index] = std::max( 0.0f, pn.perlinNoise_3D( uvw.x, uvw.y*2.0, uvw.z ) )*1.0f; // cylinder
//h_densityData[index] = std::max( 0.0f, pn.perlinNoise_3D( uvw.x*2.0f, uvw.y*2.0f, uvw.z*2.0f ))*1.0f; // tetraeder
//h_densityData[index] = (uvw.getLength() < 0.2f ? 1.0f : 0.0f)*2.0f;
}
// create 3D array
d_densityArray = 0;
cudaChannelFormatDesc channelDesc = cudaCreateChannelDesc<float>();
cudaMalloc3DArray(&d_densityArray, &channelDesc, volumeSize);
// copy data to 3D array
cudaMemcpy3DParms copyParams = {0};
copyParams.srcPtr = make_cudaPitchedPtr((void*)h_densityData, volumeSize.width*sizeof(float), volumeSize.width, volumeSize.height);
copyParams.dstArray = d_densityArray;
copyParams.extent = volumeSize;
copyParams.kind = cudaMemcpyHostToDevice;
cudaMemcpy3D(©Params);
// TMP
/*
h_debugVec.resize( 1000.0f );
d_debugVec = h_debugVec;
h_debugInfo.samples = convertToKernel(d_debugVec);
h_debugInfo.numSamples = 0;
cudaMemcpyToSymbol( d_debugInfo, &h_debugInfo, sizeof(DebugInfo), 0, cudaMemcpyHostToDevice );
*/
// setup lighting
m_light0.cam = base::CameraPtr( new base::Camera() );
m_light0.cam->m_aspectRatio = 1.0;
//m_light0.cam->m_transform = math::createLookAtMatrix( math::Vec3f( -2.0f, -2.0f, 2.0f ), math::Vec3f( 0.0f, 0.0f, 0.0f ), math::Vec3f( 0.0f, 1.0f, 0.0f ), false );
//m_light0.cam->m_transform = math::Matrix44f::TranslationMatrix( 0.3f, 0.15f, 2.0f );
//m_light0.cam->m_transform = math::Matrix44f::TranslationMatrix( -3.0f, 0.0f, 0.0f );
m_light0.cam->m_transform = math::createLookAtMatrix( math::Vec3f( 4.0f, 0.0f, 0.0f ), math::Vec3f( 0.0f, 0.0f, 0.0f ), math::Vec3f( 0.0f, 1.0f, 0.0f ), false );
m_light0.cam->update();
cudaMalloc( &m_light0.d_dctCoefficients, width*height*sizeof(float)*8 );// 8 floats /6 coefficients
// set defaults
setTotalCrossSection( 10.0f );
setAlbedo( 1.0f );
setAbsorptionColor( math::Vec3f(0.5f,0.5f, 0.5f) );
setScatteringColor(math::Vec3f(0.5f, 0.5f, 0.5f));
setLight(0, math::Vec3f(1.0f, 1.0f, 1.0f), 0.0f);
setTime( 0.0f );
setStepSize( 0.01f );
// get tetmesh onto gpu
gpuUploadTetMesh();
}
Material::Material()
{
setAlbedo(makeConstantParamRGB(1, 1, 1));
}
