diff options
Diffstat (limited to 'cuda')
| -rw-r--r-- | cuda/3d/par3d_bp.cu | 20 | ||||
| -rw-r--r-- | cuda/3d/par3d_fp.cu | 22 | ||||
| -rw-r--r-- | cuda/3d/rounding.h | 9 |
3 files changed, 49 insertions, 2 deletions
diff --git a/cuda/3d/par3d_bp.cu b/cuda/3d/par3d_bp.cu index 27d95fe..7958ac9 100644 --- a/cuda/3d/par3d_bp.cu +++ b/cuda/3d/par3d_bp.cu @@ -54,6 +54,8 @@ __constant__ DevPar3DParams gC_C[g_MaxAngles]; __constant__ float gC_scale[g_MaxAngles]; +#include "rounding.h" + template<unsigned int ZSIZE> __global__ void dev_par3D_BP(void* D_volData, unsigned int volPitch, cudaTextureObject_t tex, int startAngle, int angleOffset, const SDimensions3D dims, float fOutputScale) { @@ -100,10 +102,26 @@ __global__ void dev_par3D_BP(void* D_volData, unsigned int volPitch, cudaTexture float fU = fCu.w + fX * fCu.x + fY * fCu.y + fZ * fCu.z; float fV = fCv.w + fX * fCv.x + fY * fCv.y + fZ * fCv.z; +// printf("%f %f\n", fU, fV); for (int idx = 0; idx < ZSIZE; ++idx) { + float fVal; + textype h5 = texto(0.5f); + textype fU_ = texto(fU); + textype fUf_ = texto(floor(fU)); + float fUf = floor(fU); + + if ((fU - fUf) < 0.5f) { + textype fVal1 = texto(tex3D<float>(tex, fUf - 0.5f, fAngle, fV)); + textype fVal2 = texto(tex3D<float>(tex, fUf + 0.5f, fAngle, fV)); + fVal = texfrom(fVal1 + (fU_ + h5 - fUf_) * (fVal2 - fVal1)); + } else { + textype fVal1 = texto(tex3D<float>(tex, fUf + 0.5f, fAngle, fV)); + textype fVal2 = texto(tex3D<float>(tex, fUf + 1.5f, fAngle, fV)); + fVal = texfrom(fVal1 + (fU_ - h5 - fUf_) * (fVal2 - fVal1)); + } - float fVal = tex3D<float>(tex, fU, fAngle, fV); +// float fVal = tex3D<float>(tex, fU, fAngle, fV); Z[idx] += fVal * fS; fU += fCu.z; diff --git a/cuda/3d/par3d_fp.cu b/cuda/3d/par3d_fp.cu index fda6f93..075784b 100644 --- a/cuda/3d/par3d_fp.cu +++ b/cuda/3d/par3d_fp.cu @@ -146,6 +146,7 @@ bool transferConstants(const SPar3DProjection* angles, unsigned int iProjAngles) // blockIdx: x = u/v detector // y = angle block +#include "rounding.h" template<class COORD, class SCALE> __global__ void par3D_FP_t(float* D_projData, unsigned int projPitch, @@ -212,10 +213,28 @@ __global__ void par3D_FP_t(float* D_projData, unsigned int projPitch, float f0 = startSlice + 0.5f; float f1 = a1 * (startSlice - 0.5f*c.nSlices(dims) + 0.5f) + b1 + 0.5f*c.nDim1(dims) - 0.5f + 0.5f; float f2 = a2 * (startSlice - 0.5f*c.nSlices(dims) + 0.5f) + b2 + 0.5f*c.nDim2(dims) - 0.5f + 0.5f; + //printf("%f, %f (%f), %f (%f)\n", f0, f1, a1, f2, a2); // Only f1 non linear for (int s = startSlice; s < endSlice; ++s) { - fVal += c.tex(tex, f0, f1, f2); + + textype h5 = texto(0.5f); + textype f1_ = texto(f1); + textype f1f_ = texto(floor(f1)); + float f1f = floor(f1); + + if ((f1 - f1f) < 0.5f) { + textype fVal1 = texto(c.tex(tex, f0, f1f - 0.5f, f2)); + textype fVal2 = texto(c.tex(tex, f0, f1f + 0.5f, f2)); + fVal += texfrom(fVal1 + (f1_ + h5 - f1f_) * (fVal2 - fVal1)); +// fVal += texfrom(__hfma(__hadd(h5,__hsub(f1_, f1f_)), __hsub(fVal2, fVal1), fVal1)); + } else { + textype fVal1 = texto(c.tex(tex, f0, f1f + 0.5f, f2)); + textype fVal2 = texto(c.tex(tex, f0, f1f + 1.5f, f2)); + fVal += texfrom(fVal1 + (f1_ - h5 - f1f_) * (fVal2 - fVal1)); + } + +// fVal += c.tex(tex, f0, f1, f2); f0 += 1.0f; f1 += a1; f2 += a2; @@ -308,6 +327,7 @@ __global__ void par3D_FP_SS_t(float* D_projData, unsigned int projPitch, for (int s = startSlice; s < endSlice; ++s) { fVal += c.tex(tex, f0, f1, f2); + f0 += 1.0f; f1 += a1; f2 += a2; diff --git a/cuda/3d/rounding.h b/cuda/3d/rounding.h new file mode 100644 index 0000000..a263f84 --- /dev/null +++ b/cuda/3d/rounding.h @@ -0,0 +1,9 @@ +#include <cuda_fp16.h> + +#define texto __float2half +#define texfrom __half2float +#define textype half + +//#define texto +//#define texfrom +//#define textype float |