1 files changed, 29 insertions, 0 deletions
diff --git a/kernel/vesa.c b/kernel/vesa.c
index f3b333c..7b7b531 100644
--- a/kernel/vesa.c
+++ b/kernel/vesa.c
@@ -58,6 +58,9 @@ static int console_y;
 static int console_lines;
 static int console_cols;
 
+static uint8_t* buffer;
+static uint8_t* physbase;
+
 void vesa_set_physbase(uint32_t addr)
 {
     VbeModeInfoBlock->physbase=addr;
@@ -188,6 +191,32 @@ void PutConsoleNL()
     }
 }
 
+////////////////
+
+void vesa_render()
+{
+
+}
+
+void vesa_init_doublebuff()
+{
+
+    int blocks=800*600*2/4096+1;
+    physbase=VbeModeInfoBlock->physbase;
+    buffer=pmmngr_alloc_blocks(blocks);
+    log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Init buffer of %d blocks at 0x%08X",blocks,buffer);
+
+    VbeModeInfoBlock->physbase=buffer;
+    log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"test");
+    vesa_switch_buffers();
+}
+
+void vesa_switch_buffers()
+{
+    for(int i=0;i<800*600*2;i++)physbase[i]=buffer[i];
+    
+}
+