1 files changed, 37 insertions, 0 deletions
diff --git a/kernel/framebuffer.cpp b/kernel/framebuffer.cpp
new file mode 100644
index 0000000..62ffee7
--- /dev/null
+++ b/kernel/framebuffer.cpp
@@ -0,0 +1,37 @@
+#include <framebuffer.h>
+#include <stdint.h>
+#include <stddef.h>
+
+uint32_t* fb_addr;
+uint32_t fb_width;
+uint32_t fb_height;
+
+void fb_init(uint32_t* addr, uint32_t width, uint32_t height) {
+    fb_addr = addr;
+    fb_width = width;
+    fb_height = height;
+    fb_clear();
+}
+
+void fb_clear() {
+    for (size_t y = 0; y < fb_height; y++) {
+        for (size_t x = 0; x < fb_width; x++) {
+            const size_t i = y * fb_width + x;
+            fb_addr[i] = 0x000000;
+        }
+    }
+}
+
+void draw_pixel(const uint32_t x, const uint32_t y, const uint32_t color) {
+    const size_t pos = y * fb_width + x;
+    fb_addr[pos] = color;
+}
+
+void draw_bitmap(const uint32_t* bitmap, const uint32_t x_pos, const uint32_t y_pos, const uint32_t width, const uint32_t height) {
+    for (size_t y = 0; y < height; y++) {
+        for (size_t x = 0; x < width; x++) {
+            const size_t i = y * width + x;
+            draw_pixel(x_pos + x, y_pos + y, bitmap[i]);
+        }
+    }    
+}
+\ No newline at end of file