diff options
| author | Thomas White <taw@physics.org> | 2011-06-06 15:47:17 +0200 |
|---|---|---|
| committer | Thomas White <taw@physics.org> | 2012-02-22 15:27:27 +0100 |
| commit | 01fdad29f7d9f126290cdc455c0a587d5aa51007 (patch) | |
| tree | 001d0d7683a82b556638f1f5d388487de5834254 /src/diffraction-gpu.c | |
| parent | 9244e4169a58c457a6a10be05067e27130cc3004 (diff) | |
Add divergence to calculation
Diffstat (limited to 'src/diffraction-gpu.c')
| -rw-r--r-- | src/diffraction-gpu.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/src/diffraction-gpu.c b/src/diffraction-gpu.c index c0814e79..74e2292a 100644 --- a/src/diffraction-gpu.c +++ b/src/diffraction-gpu.c @@ -34,7 +34,8 @@ #define SAMPLING (4) -#define BWSAMPLING (10) +#define BWSAMPLING (1) +#define DIVSAMPLING (4) #define SINC_LUT_ELEMENTS (4096) @@ -166,7 +167,10 @@ void get_diffraction_gpu(struct gpu_context *gctx, struct image *image, cl_float bwstep; int n_inf = 0; int n_neg = 0; + cl_float divxlow, divxstep; + cl_float divylow, divystep; int n_nan = 0; + int sprod; if ( gctx == NULL ) { ERROR("GPU setup failed.\n"); @@ -183,6 +187,12 @@ void get_diffraction_gpu(struct gpu_context *gctx, struct image *image, khigh = 1.0/(image->lambda*(1.0 - image->beam->bandwidth/2.0)); bwstep = (khigh-klow) / BWSAMPLING; + /* Calculate divergence stuff */ + divxlow = -image->beam->divergence/2.0; + divylow = -image->beam->divergence/2.0; + divxstep = image->beam->divergence / DIVSAMPLING; + divystep = image->beam->divergence / DIVSAMPLING; + ncells.s[0] = na; ncells.s[1] = nb; ncells.s[2] = nc; @@ -201,6 +211,12 @@ void get_diffraction_gpu(struct gpu_context *gctx, struct image *image, if ( set_arg_mem(gctx, 16, gctx->sinc_luts[nb-1]) ) return; if ( set_arg_mem(gctx, 17, gctx->sinc_luts[nc-1]) ) return; if ( set_arg_mem(gctx, 18, gctx->flags) ) return; + if ( set_arg_float(gctx, 23, divxlow) ) return; + if ( set_arg_float(gctx, 24, divxstep) ) return; + if ( set_arg_int(gctx, 25, DIVSAMPLING) ) return; + if ( set_arg_float(gctx, 26, divylow) ) return; + if ( set_arg_float(gctx, 27, divystep) ) return; + if ( set_arg_int(gctx, 28, DIVSAMPLING) ) return; /* Unit cell */ err = clSetKernelArg(gctx->kern, 8, sizeof(cl_float16), &cell); @@ -210,8 +226,8 @@ void get_diffraction_gpu(struct gpu_context *gctx, struct image *image, } /* Local memory for reduction */ - err = clSetKernelArg(gctx->kern, 13, - BWSAMPLING*SAMPLING*SAMPLING*sizeof(cl_float), NULL); + sprod = BWSAMPLING*SAMPLING*SAMPLING*DIVSAMPLING*DIVSAMPLING; + err = clSetKernelArg(gctx->kern, 13, sprod*sizeof(cl_float), NULL); if ( err != CL_SUCCESS ) { ERROR("Couldn't set local memory: %s\n", clError(err)); return; @@ -225,7 +241,8 @@ void get_diffraction_gpu(struct gpu_context *gctx, struct image *image, for ( i=0; i<image->det->n_panels; i++ ) { size_t dims[3]; - size_t ldims[3] = {SAMPLING, SAMPLING, BWSAMPLING}; + size_t ldims[3] = {SAMPLING, SAMPLING, + BWSAMPLING * DIVSAMPLING * DIVSAMPLING}; struct panel *p; cl_mem tt; size_t tt_size; @@ -273,7 +290,7 @@ void get_diffraction_gpu(struct gpu_context *gctx, struct image *image, dims[0] = pan_width * SAMPLING; dims[1] = pan_height * SAMPLING; - dims[2] = BWSAMPLING; + dims[2] = BWSAMPLING * DIVSAMPLING * DIVSAMPLING; err = clEnqueueNDRangeKernel(gctx->cq, gctx->kern, 3, NULL, dims, ldims, 0, NULL, NULL); |