Scroll some pixels on the fuckin screenHEADmain

1 files changed, 33 insertions, 0 deletions

diff --git a/src/video.c b/src/video.c
new file mode 100644
index 0000000..be01f6d
--- /dev/null
+++ b/src/video.c
@@ -0,0 +1,33 @@
+#include "video.h"
+#include "utils.h"
+#include "io.h"
+
+void init_video(multiboot_info_t* p_multiboot_info) {
+    #ifdef DEBUG
+    macaroni_assert(p_multiboot_info->framebuffer_width == MULTIBOOT_GODS_WIDTH, "not gods width");
+    macaroni_assert(p_multiboot_info->framebuffer_height == MULTIBOOT_GODS_HEIGHT, "not gods height");
+    macaroni_assert(p_multiboot_info->framebuffer_bpp == MULTIBOOT_VIDEO_BPP, "not gods bpp");
+    macaroni_assert(p_multiboot_info->framebuffer_type == MULTIBOOT_FRAMEBUFFER_TYPE_RGB, "not video fbtype");
+    #endif
+
+    #ifdef DEBUG
+    serial_puthex((uint32_t) p_multiboot_info->framebuffer_red_field_position);
+    serial_puthex((uint32_t) p_multiboot_info->framebuffer_red_mask_size);
+    serial_puthex((uint32_t) p_multiboot_info->framebuffer_green_field_position);
+    serial_puthex((uint32_t) p_multiboot_info->framebuffer_green_mask_size);
+    serial_puthex((uint32_t) p_multiboot_info->framebuffer_blue_field_position);
+    serial_puthex((uint32_t) p_multiboot_info->framebuffer_blue_mask_size);
+    serial_puthex((uint32_t) p_multiboot_info->framebuffer_bpp);
+    serial_puthex((uint32_t) p_multiboot_info->framebuffer_pitch);
+    #endif // DEBUG
+
+    video_framebuffer = (uint8_t*) (uint32_t) p_multiboot_info->framebuffer_addr;
+    pixel_width = (p_multiboot_info->framebuffer_bpp / 8);
+    pitch = p_multiboot_info->framebuffer_pitch;
+}
+
+void put_pixel(macaroni_color color, uint16_t x, uint16_t y) {
+    video_framebuffer[x * pixel_width + y * pitch] = color & 0xFF;
+    video_framebuffer[x * pixel_width + y * pitch + 1] = (color >> 8) & 0xFF;
+    video_framebuffer[x * pixel_width + y * pitch + 2] = (color >> 16) & 0xFF;
+}