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-rw-r--r--cuda/3d/par3d_bp.cu254
1 files changed, 49 insertions, 205 deletions
diff --git a/cuda/3d/par3d_bp.cu b/cuda/3d/par3d_bp.cu
index 3656f78..602f209 100644
--- a/cuda/3d/par3d_bp.cu
+++ b/cuda/3d/par3d_bp.cu
@@ -28,11 +28,6 @@ along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
#include "astra/cuda/3d/util3d.h"
#include "astra/cuda/3d/dims3d.h"
-#ifdef STANDALONE
-#include "astra/cuda/3d/par3d_fp.h"
-#include "testutil.h"
-#endif
-
#include <cstdio>
#include <cassert>
#include <iostream>
@@ -55,7 +50,13 @@ static const unsigned int g_volBlockY = 32;
static const unsigned g_MaxAngles = 1024;
-__constant__ float gC_C[8*g_MaxAngles];
+struct DevPar3DParams {
+ float4 fNumU;
+ float4 fNumV;
+};
+
+__constant__ DevPar3DParams gC_C[g_MaxAngles];
+__constant__ float gC_scale[g_MaxAngles];
static bool bindProjDataTexture(const cudaArray* array)
@@ -115,8 +116,9 @@ __global__ void dev_par3D_BP(void* D_volData, unsigned int volPitch, int startAn
for (int angle = startAngle; angle < endAngle; ++angle, fAngle += 1.0f)
{
- float4 fCu = make_float4(gC_C[8*angle+0], gC_C[8*angle+1], gC_C[8*angle+2], gC_C[8*angle+3]);
- float4 fCv = make_float4(gC_C[8*angle+4], gC_C[8*angle+5], gC_C[8*angle+6], gC_C[8*angle+7]);
+ float4 fCu = gC_C[angle].fNumU;
+ float4 fCv = gC_C[angle].fNumV;
+ float fS = gC_scale[angle];
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;
@@ -124,7 +126,7 @@ __global__ void dev_par3D_BP(void* D_volData, unsigned int volPitch, int startAn
for (int idx = 0; idx < ZSIZE; ++idx) {
float fVal = tex3D(gT_par3DProjTexture, fU, fAngle, fV);
- Z[idx] += fVal;
+ Z[idx] += fVal * fS;
fU += fCu.z;
fV += fCv.z;
@@ -190,14 +192,9 @@ __global__ void dev_par3D_BP_SS(void* D_volData, unsigned int volPitch, int star
for (int angle = startAngle; angle < endAngle; ++angle, fAngle += 1.0f)
{
- const float fCux = gC_C[8*angle+0];
- const float fCuy = gC_C[8*angle+1];
- const float fCuz = gC_C[8*angle+2];
- const float fCuc = gC_C[8*angle+3];
- const float fCvx = gC_C[8*angle+4];
- const float fCvy = gC_C[8*angle+5];
- const float fCvz = gC_C[8*angle+6];
- const float fCvc = gC_C[8*angle+7];
+ float4 fCu = gC_C[angle].fNumU;
+ float4 fCv = gC_C[angle].fNumV;
+ float fS = gC_scale[angle];
float fXs = fX;
for (int iSubX = 0; iSubX < iRaysPerVoxelDim; ++iSubX) {
@@ -206,10 +203,10 @@ __global__ void dev_par3D_BP_SS(void* D_volData, unsigned int volPitch, int star
float fZs = fZ;
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;
+ const float fU = fCu.w + fXs * fCu.x + fYs * fCu.y + fZs * fCu.z;
+ const float fV = fCv.w + fXs * fCv.x + fYs * fCv.y + fZs * fCv.z;
- fVal += tex3D(gT_par3DProjTexture, fU, fAngle, fV);
+ fVal += tex3D(gT_par3DProjTexture, fU, fAngle, fV) * fS;
fZs += fSubStep;
}
fYs += fSubStep;
@@ -224,6 +221,35 @@ __global__ void dev_par3D_BP_SS(void* D_volData, unsigned int volPitch, int star
}
+bool transferConstants(const SPar3DProjection* angles, unsigned int iProjAngles, const SProjectorParams3D& params)
+{
+ DevPar3DParams *p = new DevPar3DParams[iProjAngles];
+ float *s = new float[iProjAngles];
+
+ for (unsigned int i = 0; i < iProjAngles; ++i) {
+ Vec3 u(angles[i].fDetUX, angles[i].fDetUY, angles[i].fDetUZ);
+ Vec3 v(angles[i].fDetVX, angles[i].fDetVY, angles[i].fDetVZ);
+ Vec3 r(angles[i].fRayX, angles[i].fRayY, angles[i].fRayZ);
+ Vec3 d(angles[i].fDetSX, angles[i].fDetSY, angles[i].fDetSZ);
+
+ double fDen = det3(r,u,v);
+ p[i].fNumU.x = -det3x(r,v) / fDen;
+ p[i].fNumU.y = -det3y(r,v) / fDen;
+ p[i].fNumU.z = -det3z(r,v) / fDen;
+ p[i].fNumU.w = -det3(r,d,v) / fDen;
+ p[i].fNumV.x = det3x(r,u) / fDen;
+ p[i].fNumV.y = det3y(r,u) / fDen;
+ p[i].fNumV.z = det3z(r,u) / fDen;
+ p[i].fNumV.w = det3(r,d,u) / fDen;
+
+ s[i] = 1.0 / scaled_cross3(u,v,Vec3(params.fVolScaleX,params.fVolScaleY,params.fVolScaleZ)).norm();
+ }
+
+ cudaMemcpyToSymbol(gC_C, p, iProjAngles*sizeof(DevPar3DParams), 0, cudaMemcpyHostToDevice);
+ cudaMemcpyToSymbol(gC_scale, s, iProjAngles*sizeof(float), 0, cudaMemcpyHostToDevice);
+ return true;
+}
+
bool Par3DBP_Array(cudaPitchedPtr D_volumeData,
cudaArray *D_projArray,
const SDimensions3D& dims, const SPar3DProjection* angles,
@@ -238,33 +264,9 @@ bool Par3DBP_Array(cudaPitchedPtr D_volumeData,
if (th + angleCount > dims.iProjAngles)
angleCount = dims.iProjAngles - th;
- // transfer angles to constant memory
- float* tmp = new float[8*dims.iProjAngles];
-
- // NB: We increment angles at the end of the loop body.
-
-
- // TODO: Use functions from dims3d.cu for this:
-
-#define TRANSFER_TO_CONSTANT(expr,name) do { for (unsigned int i = 0; i < angleCount; ++i) tmp[8*i + name] = (expr) ; } while (0)
-
-#define DENOM (angles[i].fRayX*angles[i].fDetUY*angles[i].fDetVZ - angles[i].fRayX*angles[i].fDetUZ*angles[i].fDetVY - angles[i].fRayY*angles[i].fDetUX*angles[i].fDetVZ + angles[i].fRayY*angles[i].fDetUZ*angles[i].fDetVX + angles[i].fRayZ*angles[i].fDetUX*angles[i].fDetVY - angles[i].fRayZ*angles[i].fDetUY*angles[i].fDetVX)
-
- TRANSFER_TO_CONSTANT( ( - (angles[i].fRayY*angles[i].fDetVZ - angles[i].fRayZ*angles[i].fDetVY)) / DENOM , 0 );
- TRANSFER_TO_CONSTANT( ( (angles[i].fRayX*angles[i].fDetVZ - angles[i].fRayZ*angles[i].fDetVX)) / DENOM , 1 );
- TRANSFER_TO_CONSTANT( (- (angles[i].fRayX*angles[i].fDetVY - angles[i].fRayY*angles[i].fDetVX) ) / DENOM , 2 );
- TRANSFER_TO_CONSTANT( (-(angles[i].fDetSY*angles[i].fDetVZ - angles[i].fDetSZ*angles[i].fDetVY)*angles[i].fRayX + (angles[i].fRayY*angles[i].fDetVZ - angles[i].fRayZ*angles[i].fDetVY)*angles[i].fDetSX - (angles[i].fRayY*angles[i].fDetSZ - angles[i].fRayZ*angles[i].fDetSY)*angles[i].fDetVX) / DENOM , 3 );
-
- TRANSFER_TO_CONSTANT( ((angles[i].fRayY*angles[i].fDetUZ - angles[i].fRayZ*angles[i].fDetUY) ) / DENOM , 4 );
- TRANSFER_TO_CONSTANT( (- (angles[i].fRayX*angles[i].fDetUZ - angles[i].fRayZ*angles[i].fDetUX) ) / DENOM , 5 );
- TRANSFER_TO_CONSTANT( ((angles[i].fRayX*angles[i].fDetUY - angles[i].fRayY*angles[i].fDetUX) ) / DENOM , 6 );
- TRANSFER_TO_CONSTANT( ((angles[i].fDetSY*angles[i].fDetUZ - angles[i].fDetSZ*angles[i].fDetUY)*angles[i].fRayX - (angles[i].fRayY*angles[i].fDetUZ - angles[i].fRayZ*angles[i].fDetUY)*angles[i].fDetSX + (angles[i].fRayY*angles[i].fDetSZ - angles[i].fRayZ*angles[i].fDetSY)*angles[i].fDetUX ) / DENOM , 7 );
-
-#undef TRANSFER_TO_CONSTANT
-#undef DENOM
- cudaMemcpyToSymbol(gC_C, tmp, angleCount*8*sizeof(float), 0, cudaMemcpyHostToDevice);
-
- delete[] tmp;
+ bool ok = transferConstants(angles, dims.iProjAngles, params);
+ if (!ok)
+ return false;
dim3 dimBlock(g_volBlockX, g_volBlockY);
@@ -310,161 +312,3 @@ bool Par3DBP(cudaPitchedPtr D_volumeData,
}
-
-#ifdef STANDALONE
-int main()
-{
- SDimensions3D dims;
- dims.iVolX = 256;
- dims.iVolY = 256;
- dims.iVolZ = 256;
- dims.iProjAngles = 180;
- dims.iProjU = 512;
- dims.iProjV = 512;
- dims.iRaysPerDet = 1;
-
- cudaExtent extentV;
- extentV.width = dims.iVolX*sizeof(float);
- extentV.height = dims.iVolY;
- extentV.depth = dims.iVolZ;
-
- cudaPitchedPtr volData; // pitch, ptr, xsize, ysize
-
- cudaMalloc3D(&volData, extentV);
-
- cudaExtent extentP;
- extentP.width = dims.iProjU*sizeof(float);
- extentP.height = dims.iProjAngles;
- extentP.depth = dims.iProjV;
-
- cudaPitchedPtr projData; // pitch, ptr, xsize, ysize
-
- cudaMalloc3D(&projData, extentP);
- cudaMemset3D(projData, 0, extentP);
-
- float* slice = new float[256*256];
- cudaPitchedPtr ptr;
- ptr.ptr = slice;
- ptr.pitch = 256*sizeof(float);
- ptr.xsize = 256*sizeof(float);
- ptr.ysize = 256;
-
- for (unsigned int i = 0; i < 256*256; ++i)
- slice[i] = 1.0f;
- for (unsigned int i = 0; i < 256; ++i) {
- cudaExtent extentS;
- extentS.width = dims.iVolX*sizeof(float);
- extentS.height = dims.iVolY;
- extentS.depth = 1;
- cudaPos sp = { 0, 0, 0 };
- cudaPos dp = { 0, 0, i };
- cudaMemcpy3DParms p;
- p.srcArray = 0;
- p.srcPos = sp;
- p.srcPtr = ptr;
- p.dstArray = 0;
- p.dstPos = dp;
- p.dstPtr = volData;
- p.extent = extentS;
- p.kind = cudaMemcpyHostToDevice;
- cudaMemcpy3D(&p);
-#if 0
- if (i == 128) {
- for (unsigned int j = 0; j < 256*256; ++j)
- slice[j] = 0.0f;
- }
-#endif
- }
-
-
- SPar3DProjection angle[180];
- angle[0].fRayX = 1;
- angle[0].fRayY = 0;
- angle[0].fRayZ = 0;
-
- angle[0].fDetSX = 512;
- angle[0].fDetSY = -256;
- angle[0].fDetSZ = -256;
-
- angle[0].fDetUX = 0;
- angle[0].fDetUY = 1;
- angle[0].fDetUZ = 0;
-
- angle[0].fDetVX = 0;
- angle[0].fDetVY = 0;
- angle[0].fDetVZ = 1;
-
-#define ROTATE0(name,i,alpha) do { angle[i].f##name##X = angle[0].f##name##X * cos(alpha) - angle[0].f##name##Y * sin(alpha); angle[i].f##name##Y = angle[0].f##name##X * sin(alpha) + angle[0].f##name##Y * cos(alpha); } while(0)
- for (int i = 1; i < 180; ++i) {
- angle[i] = angle[0];
- ROTATE0(Ray, i, i*2*M_PI/180);
- ROTATE0(DetS, i, i*2*M_PI/180);
- ROTATE0(DetU, i, i*2*M_PI/180);
- ROTATE0(DetV, i, i*2*M_PI/180);
- }
-#undef ROTATE0
-
- astraCUDA3d::Par3DFP(volData, projData, dims, angle, 1.0f);
-#if 1
- float* bufs = new float[180*512];
-
- for (int i = 0; i < 512; ++i) {
- cudaMemcpy(bufs, ((float*)projData.ptr)+180*512*i, 180*512*sizeof(float), cudaMemcpyDeviceToHost);
-
- printf("%d %d %d\n", projData.pitch, projData.xsize, projData.ysize);
-
- char fname[20];
- sprintf(fname, "sino%03d.png", i);
- saveImage(fname, 180, 512, bufs, 0, 512);
- }
-
- float* bufp = new float[512*512];
-
- for (int i = 0; i < 180; ++i) {
- for (int j = 0; j < 512; ++j) {
- cudaMemcpy(bufp+512*j, ((float*)projData.ptr)+180*512*j+512*i, 512*sizeof(float), cudaMemcpyDeviceToHost);
- }
-
- char fname[20];
- sprintf(fname, "proj%03d.png", i);
- saveImage(fname, 512, 512, bufp, 0, 512);
- }
-#endif
- for (unsigned int i = 0; i < 256*256; ++i)
- slice[i] = 0.0f;
- for (unsigned int i = 0; i < 256; ++i) {
- cudaExtent extentS;
- extentS.width = dims.iVolX*sizeof(float);
- extentS.height = dims.iVolY;
- extentS.depth = 1;
- cudaPos sp = { 0, 0, 0 };
- cudaPos dp = { 0, 0, i };
- cudaMemcpy3DParms p;
- p.srcArray = 0;
- p.srcPos = sp;
- p.srcPtr = ptr;
- p.dstArray = 0;
- p.dstPos = dp;
- p.dstPtr = volData;
- p.extent = extentS;
- p.kind = cudaMemcpyHostToDevice;
- cudaMemcpy3D(&p);
- }
-
- astraCUDA3d::Par3DBP(volData, projData, dims, angle, 1.0f);
-#if 1
- float* buf = new float[256*256];
-
- for (int i = 0; i < 256; ++i) {
- cudaMemcpy(buf, ((float*)volData.ptr)+256*256*i, 256*256*sizeof(float), cudaMemcpyDeviceToHost);
-
- printf("%d %d %d\n", volData.pitch, volData.xsize, volData.ysize);
-
- char fname[20];
- sprintf(fname, "vol%03d.png", i);
- saveImage(fname, 256, 256, buf, 0, 60000);
- }
-#endif
-
-}
-#endif
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