1 files changed, 0 insertions, 58 deletions
diff --git a/src/user/app/vterm/draw.c b/src/user/app/vterm/draw.c
index 1a40ede..50c56ed 100644
--- a/src/user/app/vterm/draw.c
+++ b/src/user/app/vterm/draw.c
@@ -4,66 +4,8 @@
 #include <string.h>
 
 struct framebuf fb;
-handle_t fb_fd;
 struct rect dirty;
 
-
-void dirty_mark(uint32_t x, uint32_t y) {
-	if (dirty.x1 > x) dirty.x1 = x;
-	if (dirty.x2 < x) dirty.x2 = x;
-	if (dirty.y1 > y) dirty.y1 = y;
-	if (dirty.y2 < y) dirty.y2 = y;
-}
-
-static void flush_combined(struct rect pix) {
-	size_t low  = fb.pitch * pix.y1 + 4 * pix.x1;
-	size_t high = fb.pitch * pix.y2 + 4 * pix.y2 + 4;
-
-	_syscall_write(fb_fd, fb.b + low, high - low, low, 0);
-}
-
-static void flush_split(struct rect pix) {
-	static uint64_t execbuf[EXECBUF_MAX_LEN / sizeof(uint64_t)];
-	if (7 * (pix.y2 - pix.y1) * sizeof(uint64_t) >= sizeof execbuf) {
-		flush_combined(pix);
-		return;
-	}
-
-	size_t epos = 0;
-	for (uint32_t y = pix.y1; y < pix.y2; y++) {
-		size_t low  = fb.pitch * y + 4 * pix.x1;
-		size_t high = fb.pitch * y + 4 * pix.x2 + 4;
-
-		execbuf[epos++] = EXECBUF_SYSCALL;
-		execbuf[epos++] = _SYSCALL_WRITE;
-		execbuf[epos++] = fb_fd;
-		execbuf[epos++] = fb.b + low;
-		execbuf[epos++] = high - low;
-		execbuf[epos++] = low;
-		execbuf[epos++] = 0;
-	}
-	_syscall_execbuf(execbuf, epos * sizeof(uint64_t));
-}
-
-void flush(void) {
-	if (~dirty.x1 == 0) return;
-
-	struct rect pix;
-	pix.x1 = dirty.x1 * font.w;
-	pix.x2 = dirty.x2 * font.w + font.w - 1;
-	pix.y1 = dirty.y1 * font.h;
-	pix.y2 = dirty.y2 * font.h + font.h - 1;
-	if (pix.x2 >= fb.width)  pix.x2 = fb.width - 1;
-	if (pix.y2 >= fb.height) pix.y2 = fb.height - 1;
-
-	/* the threshold is mostly arbitrary, wasn't based on any real benchmarks */
-	if (pix.x2 - pix.x1 > fb.width - 600) flush_combined(pix);
-	else flush_split(pix);
-
-	dirty.x1 = ~0; dirty.y1 = ~0;
-	dirty.x2 =  0; dirty.y2 =  0;
-}
-
 void scroll(void) {
 	// TODO memmove. this is UD
 	size_t row_len = fb.pitch * font.h;