Add basic bitmap font rendering

1 files changed, 21 insertions, 0 deletions

diff --git a/src/text.c b/src/text.c
new file mode 100644
index 0000000..6cec4ad
--- /dev/null
+++ b/src/text.c
@@ -0,0 +1,21 @@
+#include <stdint.h>
+
+#include "ubox_vga.h"
+
+static const uint8_t *font;
+
+void ubox_set_font(const uint8_t *pixdata)
+{
+    font = pixdata;
+}
+
+void ubox_put_text(uint16_t x, uint16_t y, const char *text, uint8_t color)
+{
+    ubox_rect dst = { x, y, 8, 8};
+
+    while (*text)
+    {
+        ubox_blit_c(font + ((*text++ - ' ') << 6), &dst, color);
+        dst.x += 8;
+    }
+}