jtheoof/swappy
1
1
Fork 0
mirror of https://github.com/jtheoof/swappy.git synced 2024-08-16 10:10:30 +03:00
Code Issues Packages Projects Releases Wiki Activity

refactor(blur): reuse gaussian size

Browse Source
This commit is contained in:
Jeremy Attali 2020-06-13 13:32:43 -04:00
parent f9737d78c9
commit b9d685b7b2
1 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
src/render.c
View File

@ -25,11 +25,16 @@ static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
uint8_t *dst, *tmp;
uint32_t *s, *d, p;
int i, j, k;
const int size = (int)blur_level * 2 + 1;
const int half = size / 2;
const int radius = 4;
const double sigma = 3.1;
struct gaussian_kernel *gaussian = gaussian_kernel(radius, sigma);
const int size = gaussian->size;
const int half = (int)radius * 2;
gdouble scale_x, scale_y;
guint sum, pass, nb_passes;
sum = (guint)gaussian->sum;
if (cairo_surface_status(surface)) {
return NULL;
}
@ -81,16 +86,12 @@ static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
nb_passes = (guint)sqrt(scale_x * scale_y) + 1;
struct gaussian_kernel *gaussian = gaussian_kernel(4, 3.1);
int start_x = CLAMP(x * scale_x, 0, src_width);
int start_y = CLAMP(y * scale_y, 0, src_height);
int end_x = CLAMP((x + width) * scale_x, 0, src_width);
int end_y = CLAMP((y + height) * scale_y, 0, src_height);
sum = (guint)gaussian->sum;
for (pass = 0; pass < nb_passes; pass++) {
/* Horizontally blur from surface -> tmp */
for (i = start_y; i < end_y; i++) {
@ -98,7 +99,7 @@ static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
d = (uint32_t *)(tmp + i * dst_stride);
for (j = start_x; j < end_x; j++) {
u = v = w = z = 0;
for (k = 0; k < gaussian->size; k++) {
for (k = 0; k < size; k++) {
gdouble multiplier = gaussian->kernel[k];
if (j - half + k < 0 || j - half + k >= src_width) {
@ -122,7 +123,7 @@ static cairo_surface_t *blur_surface(cairo_surface_t *surface, double x,
d = (uint32_t *)(dst + i * dst_stride);
for (j = start_x; j < end_x; j++) {
u = v = w = z = 0;
for (k = 0; k < gaussian->size; k++) {
for (k = 0; k < size; k++) {
gdouble multiplier = gaussian->kernel[k];
if (i - half + k < 0 || i - half + k >= src_height) {