int process_cl(struct dt_iop_module_t *self, dt_dev_pixelpipe_iop_t *piece, cl_mem dev_in, cl_mem dev_out,
const dt_iop_roi_t *roi_in, const dt_iop_roi_t *roi_out)
{
dt_iop_nlmeans_params_t *d = (dt_iop_nlmeans_params_t *)piece->data;
dt_iop_nlmeans_global_data_t *gd = (dt_iop_nlmeans_global_data_t *)self->data;
const int devid = piece->pipe->devid;
const int width = roi_in->width;
const int height = roi_in->height;
cl_mem dev_U2 = NULL;
cl_mem dev_U4 = NULL;
cl_mem dev_U4_t = NULL;
cl_mem dev_U4_tt = NULL;
unsigned int state = 0;
cl_mem buckets[NUM_BUCKETS] = { NULL };
cl_int err = -999;
const int P = ceilf(d->radius * fmin(roi_in->scale, 2.0f) / fmax(piece->iscale, 1.0f)); // pixel filter size
const int K = ceilf(7 * fmin(roi_in->scale, 2.0f) / fmax(piece->iscale, 1.0f)); // nbhood
const float sharpness = 3000.0f / (1.0f + d->strength);
if(P < 1)
{
size_t origin[] = { 0, 0, 0 };
size_t region[] = { width, height, 1 };
err = dt_opencl_enqueue_copy_image(devid, dev_in, dev_out, origin, origin, region);
if(err != CL_SUCCESS) goto error;
return TRUE;
}
float max_L = 120.0f, max_C = 512.0f;
float nL = 1.0f / max_L, nC = 1.0f / max_C;
float nL2 = nL * nL, nC2 = nC * nC;
// float weight[4] = { powf(d->luma, 0.6), powf(d->chroma, 0.6), powf(d->chroma, 0.6), 1.0f };
float weight[4] = { d->luma, d->chroma, d->chroma, 1.0f };
dev_U2 = dt_opencl_alloc_device_buffer(devid, (size_t)width * height * 4 * sizeof(float));
if(dev_U2 == NULL) goto error;
for(int k = 0; k < NUM_BUCKETS; k++)
{
buckets[k] = dt_opencl_alloc_device_buffer(devid, (size_t)width * height * sizeof(float));
if(buckets[k] == NULL) goto error;
}
// prepare local work group
size_t maxsizes[3] = { 0 }; // the maximum dimensions for a work group
size_t workgroupsize = 0; // the maximum number of items in a work group
unsigned long localmemsize = 0; // the maximum amount of local memory we can use
size_t kernelworkgroupsize = 0; // the maximum amount of items in work group of the kernel
// assuming this is the same for nlmeans_horiz and nlmeans_vert
// make sure blocksize is not too large
int blocksize = BLOCKSIZE;
if(dt_opencl_get_work_group_limits(devid, maxsizes, &workgroupsize, &localmemsize) == CL_SUCCESS
&& dt_opencl_get_kernel_work_group_size(devid, gd->kernel_nlmeans_horiz, &kernelworkgroupsize)
== CL_SUCCESS)
{
// reduce blocksize step by step until it fits to limits
while(blocksize > maxsizes[0] || blocksize > maxsizes[1] || blocksize > kernelworkgroupsize
|| blocksize > workgroupsize || (blocksize + 2 * P) * sizeof(float) > localmemsize)
{
if(blocksize == 1) break;
blocksize >>= 1;
}
}
else
{
int process_cl(struct dt_iop_module_t *self, dt_dev_pixelpipe_iop_t *piece, cl_mem dev_in, cl_mem dev_out,
const dt_iop_roi_t *const roi_in, const dt_iop_roi_t *const roi_out)
{
dt_iop_global_tonemap_data_t *d = (dt_iop_global_tonemap_data_t *)piece->data;
dt_iop_global_tonemap_global_data_t *gd = (dt_iop_global_tonemap_global_data_t *)self->data;
dt_iop_global_tonemap_gui_data_t *g = (dt_iop_global_tonemap_gui_data_t *)self->gui_data;
dt_bilateral_cl_t *b = NULL;
cl_int err = -999;
cl_mem dev_m = NULL;
cl_mem dev_r = NULL;
float *maximum = NULL;
const int devid = piece->pipe->devid;
int gtkernel = -1;
const int width = roi_out->width;
const int height = roi_out->height;
float parameters[4] = { 0.0f };
switch(d->operator)
{
case OPERATOR_REINHARD:
gtkernel = gd->kernel_global_tonemap_reinhard;
break;
case OPERATOR_DRAGO:
gtkernel = gd->kernel_global_tonemap_drago;
break;
case OPERATOR_FILMIC:
gtkernel = gd->kernel_global_tonemap_filmic;
break;
}
if(d->operator== OPERATOR_DRAGO)
{
const float eps = 0.0001f;
float tmp_lwmax = NAN;
// see comments in process() about lwmax value
if(self->dev->gui_attached && g && piece->pipe->type == DT_DEV_PIXELPIPE_FULL)
{
dt_pthread_mutex_lock(&g->lock);
const uint64_t hash = g->hash;
dt_pthread_mutex_unlock(&g->lock);
if(hash != 0 && !dt_dev_sync_pixelpipe_hash(self->dev, piece->pipe, 0, self->priority, &g->lock, &g->hash))
dt_control_log(_("inconsistent output"));
dt_pthread_mutex_lock(&g->lock);
tmp_lwmax = g->lwmax;
dt_pthread_mutex_unlock(&g->lock);
}
if(isnan(tmp_lwmax))
{
dt_opencl_local_buffer_t flocopt
= (dt_opencl_local_buffer_t){ .xoffset = 0, .xfactor = 1, .yoffset = 0, .yfactor = 1,
.cellsize = sizeof(float), .overhead = 0,
.sizex = 1 << 4, .sizey = 1 << 4 };
if(!dt_opencl_local_buffer_opt(devid, gd->kernel_pixelmax_first, &flocopt))
goto error;
const size_t bwidth = ROUNDUP(width, flocopt.sizex);
const size_t bheight = ROUNDUP(height, flocopt.sizey);
const int bufsize = (bwidth / flocopt.sizex) * (bheight / flocopt.sizey);
dt_opencl_local_buffer_t slocopt
= (dt_opencl_local_buffer_t){ .xoffset = 0, .xfactor = 1, .yoffset = 0, .yfactor = 1,
.cellsize = sizeof(float), .overhead = 0,
.sizex = 1 << 16, .sizey = 1 };
if(!dt_opencl_local_buffer_opt(devid, gd->kernel_pixelmax_second, &slocopt))
goto error;
const int reducesize = MIN(REDUCESIZE, ROUNDUP(bufsize, slocopt.sizex) / slocopt.sizex);
size_t sizes[3];
size_t local[3];
dev_m = dt_opencl_alloc_device_buffer(devid, (size_t)bufsize * sizeof(float));
if(dev_m == NULL) goto error;
dev_r = dt_opencl_alloc_device_buffer(devid, (size_t)reducesize * sizeof(float));
if(dev_r == NULL) goto error;
sizes[0] = bwidth;
sizes[1] = bheight;
sizes[2] = 1;
local[0] = flocopt.sizex;
local[1] = flocopt.sizey;
local[2] = 1;
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_first, 0, sizeof(cl_mem), &dev_in);
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_first, 1, sizeof(int), &width);
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_first, 2, sizeof(int), &height);
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_first, 3, sizeof(cl_mem), &dev_m);
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_first, 4, flocopt.sizex * flocopt.sizey * sizeof(float), NULL);
err = dt_opencl_enqueue_kernel_2d_with_local(devid, gd->kernel_pixelmax_first, sizes, local);
if(err != CL_SUCCESS) goto error;
sizes[0] = reducesize * slocopt.sizex;
sizes[1] = 1;
sizes[2] = 1;
local[0] = slocopt.sizex;
local[1] = 1;
local[2] = 1;
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_second, 0, sizeof(cl_mem), &dev_m);
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_second, 1, sizeof(cl_mem), &dev_r);
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_second, 2, sizeof(int), &bufsize);
dt_opencl_set_kernel_arg(devid, gd->kernel_pixelmax_second, 3, slocopt.sizex * sizeof(float), NULL);
err = dt_opencl_enqueue_kernel_2d_with_local(devid, gd->kernel_pixelmax_second, sizes, local);
if(err != CL_SUCCESS) goto error;
maximum = dt_alloc_align(16, reducesize * sizeof(float));
err = dt_opencl_read_buffer_from_device(devid, (void *)maximum, dev_r, 0,
(size_t)reducesize * sizeof(float), CL_TRUE);
if(err != CL_SUCCESS) goto error;
dt_opencl_release_mem_object(dev_r);
dt_opencl_release_mem_object(dev_m);
dev_r = dev_m = NULL;
for(int k = 1; k < reducesize; k++)
{
float mine = maximum[0];
float other = maximum[k];
maximum[0] = (other > mine) ? other : mine;
}
tmp_lwmax = MAX(eps, (maximum[0] * 0.01f));
dt_free_align(maximum);
maximum = NULL;
}
const float lwmax = tmp_lwmax;
const float ldc = d->drago.max_light * 0.01f / log10f(lwmax + 1.0f);
const float bl = logf(MAX(eps, d->drago.bias)) / logf(0.5f);
parameters[0] = eps;
parameters[1] = ldc;
parameters[2] = bl;
parameters[3] = lwmax;
if(self->dev->gui_attached && g && piece->pipe->type == DT_DEV_PIXELPIPE_PREVIEW)
{
uint64_t hash = dt_dev_hash_plus(self->dev, piece->pipe, 0, self->priority);
dt_pthread_mutex_lock(&g->lock);
g->lwmax = lwmax;
g->hash = hash;
dt_pthread_mutex_unlock(&g->lock);
}
}
const float scale = piece->iscale / roi_in->scale;
const float sigma_r = 8.0f; // does not depend on scale
const float iw = piece->buf_in.width / scale;
const float ih = piece->buf_in.height / scale;
const float sigma_s = fminf(iw, ih) * 0.03f;
if(d->detail != 0.0f)
{
b = dt_bilateral_init_cl(devid, roi_in->width, roi_in->height, sigma_s, sigma_r);
if(!b) goto error;
// get detail from unchanged input buffer
err = dt_bilateral_splat_cl(b, dev_in);
if(err != CL_SUCCESS) goto error;
}
size_t sizes[2] = { ROUNDUPWD(width), ROUNDUPHT(height) };
dt_opencl_set_kernel_arg(devid, gtkernel, 0, sizeof(cl_mem), &dev_in);
dt_opencl_set_kernel_arg(devid, gtkernel, 1, sizeof(cl_mem), &dev_out);
dt_opencl_set_kernel_arg(devid, gtkernel, 2, sizeof(int), &width);
dt_opencl_set_kernel_arg(devid, gtkernel, 3, sizeof(int), &height);
dt_opencl_set_kernel_arg(devid, gtkernel, 4, 4 * sizeof(float), ¶meters);
err = dt_opencl_enqueue_kernel_2d(devid, gtkernel, sizes);
if(err != CL_SUCCESS) goto error;
if(d->detail != 0.0f)
{
err = dt_bilateral_blur_cl(b);
if(err != CL_SUCCESS) goto error;
// and apply it to output buffer after logscale
err = dt_bilateral_slice_to_output_cl(b, dev_in, dev_out, d->detail);
if(err != CL_SUCCESS) goto error;
dt_bilateral_free_cl(b);
}
return TRUE;
error:
if(b) dt_bilateral_free_cl(b);
dt_opencl_release_mem_object(dev_m);
dt_opencl_release_mem_object(dev_r);
dt_free_align(maximum);
dt_print(DT_DEBUG_OPENCL, "[opencl_global_tonemap] couldn't enqueue kernel! %d\n", err);
return FALSE;
}
#endif
void tiling_callback(struct dt_iop_module_t *self, struct dt_dev_pixelpipe_iop_t *piece,
const dt_iop_roi_t *roi_in, const dt_iop_roi_t *roi_out,
struct dt_develop_tiling_t *tiling)
{
dt_iop_global_tonemap_data_t *d = (dt_iop_global_tonemap_data_t *)piece->data;
const float scale = piece->iscale / roi_in->scale;
const float iw = piece->buf_in.width / scale;
const float ih = piece->buf_in.height / scale;
const float sigma_s = fminf(iw, ih) * 0.03f;
const float sigma_r = 8.0f;
const int detail = (d->detail != 0.0f);
const int width = roi_in->width;
const int height = roi_in->height;
const int channels = piece->colors;
const size_t basebuffer = width * height * channels * sizeof(float);
tiling->factor = 2.0f + (detail ? (float)dt_bilateral_memory_use2(width, height, sigma_s, sigma_r) / basebuffer : 0.0f);
tiling->maxbuf
= (detail ? MAX(1.0f, (float)dt_bilateral_singlebuffer_size2(width, height, sigma_s, sigma_r) / basebuffer) : 1.0f);
tiling->overhead = 0;
tiling->overlap = (detail ? ceilf(4 * sigma_s) : 0);
tiling->xalign = 1;
tiling->yalign = 1;
return;
}
void commit_params(struct dt_iop_module_t *self, dt_iop_params_t *p1, dt_dev_pixelpipe_t *pipe,
dt_dev_pixelpipe_iop_t *piece)
{
dt_iop_global_tonemap_params_t *p = (dt_iop_global_tonemap_params_t *)p1;
dt_iop_global_tonemap_data_t *d = (dt_iop_global_tonemap_data_t *)piece->data;
d->operator= p->operator;
d->drago.bias = p->drago.bias;
d->drago.max_light = p->drago.max_light;
d->detail = p->detail;
// drago needs the maximum L-value of the whole image so it must not use tiling
if(d->operator == OPERATOR_DRAGO) piece->process_tiling_ready = 0;
#ifdef HAVE_OPENCL
if(d->detail != 0.0f)
piece->process_cl_ready = (piece->process_cl_ready && !(darktable.opencl->avoid_atomics));
#endif
}
