From 9dc527b3be9d493dcf8cf1baf78477373eb5990d Mon Sep 17 00:00:00 2001
From: Loic Guegan <manzerbredes@mailbox.org>
Date: Mon, 26 Apr 2021 12:37:34 +0200
Subject: Enable psf font for framebuffer display

---
 src/drivers/framebuffer.cc | 70 ++++++++++++++--------------------------------
 1 file changed, 21 insertions(+), 49 deletions(-)

(limited to 'src/drivers/framebuffer.cc')

diff --git a/src/drivers/framebuffer.cc b/src/drivers/framebuffer.cc
index 2fbe153..2ac47db 100644
--- a/src/drivers/framebuffer.cc
+++ b/src/drivers/framebuffer.cc
@@ -1,58 +1,30 @@
 #include "framebuffer.hpp"
+#include "core/paging.hpp"
+#include "libs/string.hpp"
 
-#define MAX_COL 80
-#define MAX_LINE 25
+FB_CFG fb_cfg;
 
-VIDEO_STATE VS={
-  (u8 *)0xB8000,
-  0,
-  0,
-  BLACK,
-  GRAY,
-};
 
-void putchar(char c){
-  // Handle newline here
-  if(c=='\n'){
-    VS.col=0;
-    VS.line+=1;
-    if(VS.line>=MAX_LINE){
-      VS.line=MAX_LINE-1;
-      scrollup();
-    }
-    return;
-  }
-  
-  // Print char
-  VS.mem[VS.col*2+MAX_COL*VS.line*2]=c;
-  VS.mem[VS.col*2+MAX_COL*VS.line*2+1]=VS.fg|VS.bg<<4;
-  
-  // Refresh location
-  VS.col+=1;
-  if(VS.col>= MAX_COL){
-    VS.col=0;
-    VS.line+=1;
-    if(VS.line>=MAX_LINE){
-      VS.line=MAX_LINE-1;
-      scrollup();
-    }
-  }
+void framebuffer_init(FB_CFG config){
+    fb_cfg=config;
 }
 
-void clear(){
-  for(u8 i=0;i<MAX_LINE;i++){
-    scrollup();
-  }
+void framebuffer_draw(FB_PIXEL p){
+    u8 *pixel=(u8*)(fb_cfg.location+p.x*(fb_cfg.depth/8)+p.y*fb_cfg.pitch);
+    PAGING_MAP(pixel);
+    pixel[0]=p.r;
+    pixel[1]=p.g;
+    pixel[2]=p.b;
+    if(fb_cfg.depth==32)
+        pixel[3]=p.a;
 }
 
-void scrollup(){
-  // Move VS.line up
-  for(u8 i=1;i<=MAX_LINE;i++){
-    for(u8 j=0;j<=MAX_COL;j++)
-      VS.mem[j*2+MAX_COL*(i-1)*2]=VS.mem[j*2+MAX_COL*i*2];
-  }
-  // Clear last VS.line
-  for(u8 i=0;i<=MAX_COL;i++){
-    VS.mem[i*2+MAX_COL*(MAX_LINE-1)*2]='\0';
-  }
+void framebuffer_scrollup(u32 npixel){
+    u64 start=fb_cfg.location+npixel*fb_cfg.pitch;
+    u64 amount=fb_cfg.pitch*(fb_cfg.height-npixel);
+    memcpy((void*)start,(void*)fb_cfg.location,amount);
 }
+
+void framebuffer_clear(){
+    memset((void*)fb_cfg.location, 0, fb_cfg.pitch*fb_cfg.height);
+}
\ No newline at end of file
-- 
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