Jannis/BoredOS
1
0
Fork 0
mirror of https://github.com/JannisHeydemann/BoredOS.git synced 2026-05-30 10:26:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

OPT: Multithreaded WM rendering

Browse Source
This commit is contained in:
boreddevnl
2026-04-02 21:36:00 +02:00
parent e60f232812
commit 91b67bd8d5
7 changed files with 567 additions and 461 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/sys/syscall.c
View File

@@ -9,6 +9,8 @@
#include "wm.h"
#include "fat32.h"
#include "paging.h"
#include "work_queue.h"
#include "smp.h"
#include "platform.h"
#include "io.h"
#include "pci.h"
@@ -630,26 +632,25 @@ static uint64_t syscall_handler_inner(registers_t *regs) {
if (win->pixels) {
int rx = (int)params[0]; int ry = (int)params[1];
int rw = (int)params[2]; int rh = (int)params[3];
int src_w = rw;
int src_x_offset = 0;
int src_y_offset = 0;
if (rx < 0) { src_x_offset = -rx; rw += rx; rx = 0; }
if (ry < 0) { src_y_offset = -ry; rh += ry; ry = 0; }
if (rx + rw > win->w) rw = win->w - rx;
if (ry + rh > (win->h - 20)) rh = (win->h - 20) - ry;
if (rw > 0 && rh > 0) {
for (int y = 0; y < rh; y++) {
uint32_t *dest = &win->pixels[(ry + y) * win->w + rx];
uint32_t *src = &image_data[(src_y_offset + y) * (int)params[2] + src_x_offset];
uint32_t *src = &image_data[(src_y_offset + y) * src_w + src_x_offset];
for (int x = 0; x < rw; x++) {
uint32_t s = src[x];
uint8_t alpha = (s >> 24) & 0xFF;
if (alpha == 0xFF) {
dest[x] = s;
} else if (alpha == 0) {
// Skip
} else {
} else if (alpha > 0) {
uint32_t d = dest[x];
uint32_t rb = ((s & 0xFF00FF) * alpha + (d & 0xFF00FF) * (255 - alpha)) >> 8;
uint32_t g = ((s & 0x00FF00) * alpha + (d & 0x00FF00) * (255 - alpha)) >> 8;