rough draft of something to manipulate the FB

src/main.rs

@@ -28,6 +28,7 @@ use uefi::{
         AllocateType, BootServices, MemoryType, OpenProtocolAttributes, OpenProtocolParams,
     },
 };
+use uefi_fb::UefiFb;
 
 mod uefi_fb;
 mod sync;
@@ -68,36 +69,14 @@ pub fn efi_main(_image: Handle, mut st: SystemTable<Boot>) -> Status {
         }
     };
 
+    let fb = uefi_fb::UefiFb::new();
+    uefifb_test(&fb)
+}
 
-    
+fn uefifb_test(fb: &UefiFb) -> Status {
 
-    let handle = bt.get_handle_for_protocol::<GraphicsOutput>()
-        .expect("missing GraphicsOutput protocol");
-
-    
-    let mut gop = unsafe {
-        let mut gop_proto = st.boot_services().open_protocol::<GraphicsOutput>(
-            OpenProtocolParams {
-                handle,
-                agent: st.boot_services().image_handle(),
-                controller: None,
-            },
-            // For this test, don't open in exclusive mode. That
-            // would break the connection between stdout and the
-            // video console.
-            OpenProtocolAttributes::GetProtocol,
-        )
-        .expect("failed to open Graphics Output Protocol");
-
-        gop_proto
-    };
-    
-    set_graphics_mode(&mut gop);
-    fill_color(&mut gop);
-    draw_fb(&mut gop);
+    // run tests here
     info!("GOP Framebuffer test complete");
-    
-    // Return success status
     Status::SUCCESS
 }
 

src/uefi_fb/mod.rs

@@ -12,15 +12,15 @@ use uefi::{
 };
 use alloc::sync::Arc;
 use crate::sync;
-use crate::sync::Spinlock::*;
+use crate::sync::{Spinlock, SpinlockGuard};
 
-struct UefiFb {
-    gop: Arc<ScopedProtocol<GraphicsOutput>>
+pub struct UefiFb<'a> {
+    gop: ScopedProtocol<'a, GraphicsOutput<'a>>
 }
 
-impl UefiFb {
+impl UefiFb<'_> {
 
-    pub fn new() -> UefiFb {
+    pub fn new() -> UefiFb<'static> {
         let st_ref = unsafe { uefi_services::system_table().as_ref() };
         let bt = st_ref.boot_services();
 
@@ -45,27 +45,15 @@ impl UefiFb {
             gop_proto
         };
         
+        UefiFb { gop }
         
-        UefiFb {
-            gop: Arc::new(gop)
-        }
-        
-
-        /*
-        set_graphics_mode(&mut gop);
-        fill_color(&mut gop);
-        draw_fb(&mut gop);
-        info!("GOP Framebuffer test complete");
-        
-        // Return success status
-        Status::SUCCESS
-        */
         }
     
     // Set a larger graphics mode.
-    pub fn set_graphics_mode(&mut self) {
-        // We know for sure QEMU has a 1024x768 mode.
-        let mode = self.gop
+    pub fn set_graphics_mode(&mut self, mode_tuple: Option<(i16,i16,i16)>) {
+        if mode_tuple == None {
+            // We know for sure QEMU has a 1024x768 mode.
+            let mode = self.gop
             .modes()
             .find(|mode| {
                 let info = mode.info();
@@ -73,42 +61,38 @@ impl UefiFb {
             })
             .unwrap();
 
-        self.gop.set_mode(&mode).expect("Failed to set graphics mode");
+            self.gop.set_mode(&mode).expect("Failed to set graphics mode");
+        } else {
+            unimplemented!()
+        }
     }
 
     // Fill the screen with color.
-    fn fill_color(&mut self) {
+    fn fb_blt_fill(&mut self, color: BltPixel, dest: (usize, usize), dims: (usize, usize)) {
         let op = BltOp::VideoFill {
-            // Cornflower blue.
-            color: BltPixel::new(100, 149, 237),
-            dest: (0, 0),
-            dims: (1024, 768),
+            color,
+            dest,
+            dims
         };
 
         self.gop.blt(op).expect("Failed to fill screen with color");
     }
 
+
     // Draw directly to the frame buffer.
-    fn draw_fb(&mut self) {
-        // The `virtio-gpu-pci` graphics device we use on aarch64 doesn't
-        // support `PixelFormat::BltOnly`.
-        if cfg!(target_arch = "aarch64") {
-            return;
-        }
-
+    fn draw_fb(&mut self, index: usize, rgb: [u8; 3]) {
         let mi = self.gop.current_mode_info();
-        let stride = mi.stride();
-        let (width, height) = mi.resolution();
-
         let mut fb = self.gop.frame_buffer();
 
         type PixelWriter = unsafe fn(&mut FrameBuffer, usize, [u8; 3]);
-        unsafe fn write_pixel_rgb(fb: &mut FrameBuffer, pixel_base: usize, rgb: [u8; 3]) {
-            fb.write_value(pixel_base, rgb);
+
+        unsafe fn write_pixel_rgb(fb: &mut FrameBuffer, index: usize, rgb: [u8; 3]) {
+            fb.write_value(index, rgb);
         }
-        unsafe fn write_pixel_bgr(fb: &mut FrameBuffer, pixel_base: usize, rgb: [u8; 3]) {
-            fb.write_value(pixel_base, [rgb[2], rgb[1], rgb[0]]);
+        unsafe fn write_pixel_bgr(fb: &mut FrameBuffer, index: usize, rgb: [u8; 3]) {
+            fb.write_value(index, [rgb[2], rgb[1], rgb[0]]);
         }
+
         let write_pixel: PixelWriter = match mi.pixel_format() {
             PixelFormat::Rgb => write_pixel_rgb,
             PixelFormat::Bgr => write_pixel_bgr,
@@ -118,21 +102,6 @@ impl UefiFb {
             }
         };
 
-        let mut fill_rectangle = |(x1, y1), (x2, y2), color| {
-            assert!((x1 < width) && (x2 < width), "Bad X coordinate");
-            assert!((y1 < height) && (y2 < height), "Bad Y coordinate");
-            for row in y1..y2 {
-                for column in x1..x2 {
-                    unsafe {
-                        let pixel_index = (row * stride) + column;
-                        let pixel_base = 4 * pixel_index;
-                        write_pixel(&mut fb, pixel_base, color);
-                    }
-                }
-            }
-        };
-
-        fill_rectangle((50, 30), (150, 600), [250, 128, 64]);
-        fill_rectangle((400, 120), (750, 450), [16, 128, 255]);
+        unsafe { write_pixel(&mut fb, index, rgb) };
     }
 }