diff options
Diffstat (limited to 'cuda/3d/par3d_bp.cu')
| -rw-r--r-- | cuda/3d/par3d_bp.cu | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/cuda/3d/par3d_bp.cu b/cuda/3d/par3d_bp.cu index cafab46..491ee2f 100644 --- a/cuda/3d/par3d_bp.cu +++ b/cuda/3d/par3d_bp.cu @@ -143,7 +143,7 @@ __global__ void dev_par3D_BP(void* D_volData, unsigned int volPitch, int startAn } // supersampling version -__global__ void dev_par3D_BP_SS(void* D_volData, unsigned int volPitch, int startAngle, int angleOffset, const SDimensions3D dims, float fOutputScale) +__global__ void dev_par3D_BP_SS(void* D_volData, unsigned int volPitch, int startAngle, int angleOffset, const SDimensions3D dims, int iRaysPerVoxelDim, float fOutputScale) { float* volData = (float*)D_volData; @@ -174,13 +174,13 @@ __global__ void dev_par3D_BP_SS(void* D_volData, unsigned int volPitch, int star if (endZ > dims.iVolZ) endZ = dims.iVolZ; - float fX = X - 0.5f*dims.iVolX + 0.5f - 0.5f + 0.5f/dims.iRaysPerVoxelDim; - float fY = Y - 0.5f*dims.iVolY + 0.5f - 0.5f + 0.5f/dims.iRaysPerVoxelDim; - float fZ = startZ - 0.5f*dims.iVolZ + 0.5f - 0.5f + 0.5f/dims.iRaysPerVoxelDim; + float fX = X - 0.5f*dims.iVolX + 0.5f - 0.5f + 0.5f/iRaysPerVoxelDim; + float fY = Y - 0.5f*dims.iVolY + 0.5f - 0.5f + 0.5f/iRaysPerVoxelDim; + float fZ = startZ - 0.5f*dims.iVolZ + 0.5f - 0.5f + 0.5f/iRaysPerVoxelDim; - const float fSubStep = 1.0f/dims.iRaysPerVoxelDim; + const float fSubStep = 1.0f/iRaysPerVoxelDim; - fOutputScale /= (dims.iRaysPerVoxelDim*dims.iRaysPerVoxelDim*dims.iRaysPerVoxelDim); + fOutputScale /= (iRaysPerVoxelDim*iRaysPerVoxelDim*iRaysPerVoxelDim); for (int Z = startZ; Z < endZ; ++Z, fZ += 1.0f) @@ -201,11 +201,11 @@ __global__ void dev_par3D_BP_SS(void* D_volData, unsigned int volPitch, int star const float fCvc = gC_C[8*angle+7]; float fXs = fX; - for (int iSubX = 0; iSubX < dims.iRaysPerVoxelDim; ++iSubX) { + for (int iSubX = 0; iSubX < iRaysPerVoxelDim; ++iSubX) { float fYs = fY; - for (int iSubY = 0; iSubY < dims.iRaysPerVoxelDim; ++iSubY) { + for (int iSubY = 0; iSubY < iRaysPerVoxelDim; ++iSubY) { float fZs = fZ; - for (int iSubZ = 0; iSubZ < dims.iRaysPerVoxelDim; ++iSubZ) { + for (int iSubZ = 0; iSubZ < iRaysPerVoxelDim; ++iSubZ) { const float fU = fCuc + fXs * fCux + fYs * fCuy + fZs * fCuz; const float fV = fCvc + fXs * fCvx + fYs * fCvy + fZs * fCvz; @@ -228,10 +228,12 @@ __global__ void dev_par3D_BP_SS(void* D_volData, unsigned int volPitch, int star bool Par3DBP_Array(cudaPitchedPtr D_volumeData, cudaArray *D_projArray, const SDimensions3D& dims, const SPar3DProjection* angles, - float fOutputScale) + const SProjectorParams3D& params) { bindProjDataTexture(D_projArray); + float fOutputScale = params.fOutputScale * params.fVolScaleX * params.fVolScaleY * params.fVolScaleZ; + for (unsigned int th = 0; th < dims.iProjAngles; th += g_MaxAngles) { unsigned int angleCount = g_MaxAngles; if (th + angleCount > dims.iProjAngles) @@ -274,10 +276,10 @@ bool Par3DBP_Array(cudaPitchedPtr D_volumeData, for (unsigned int i = 0; i < angleCount; i += g_anglesPerBlock) { // printf("Calling BP: %d, %dx%d, %dx%d to %p\n", i, dimBlock.x, dimBlock.y, dimGrid.x, dimGrid.y, (void*)D_volumeData.ptr); - if (dims.iRaysPerVoxelDim == 1) + if (params.iRaysPerVoxelDim == 1) dev_par3D_BP<<<dimGrid, dimBlock>>>(D_volumeData.ptr, D_volumeData.pitch/sizeof(float), i, th, dims, fOutputScale); else - dev_par3D_BP_SS<<<dimGrid, dimBlock>>>(D_volumeData.ptr, D_volumeData.pitch/sizeof(float), i, th, dims, fOutputScale); + dev_par3D_BP_SS<<<dimGrid, dimBlock>>>(D_volumeData.ptr, D_volumeData.pitch/sizeof(float), i, th, dims, params.iRaysPerVoxelDim, fOutputScale); } cudaTextForceKernelsCompletion(); @@ -293,14 +295,14 @@ bool Par3DBP_Array(cudaPitchedPtr D_volumeData, bool Par3DBP(cudaPitchedPtr D_volumeData, cudaPitchedPtr D_projData, const SDimensions3D& dims, const SPar3DProjection* angles, - float fOutputScale) + const SProjectorParams3D& params) { // transfer projections to array cudaArray* cuArray = allocateProjectionArray(dims); transferProjectionsToArray(D_projData, cuArray, dims); - bool ret = Par3DBP_Array(D_volumeData, cuArray, dims, angles, fOutputScale); + bool ret = Par3DBP_Array(D_volumeData, cuArray, dims, angles, params); cudaFreeArray(cuArray); |