From 308cb408a21b6504215300a897acaf105de0359d Mon Sep 17 00:00:00 2001
From: milang <milan.garnier@orange.fr>
Date: Mon, 19 Aug 2019 12:58:50 +0200
Subject: [PATCH] correct zbuffer clearing ( thanks @lephenixnoir)

---
 src/FxEngine/zbuffer.c | 42 ++++--------------------------------------
 1 file changed, 4 insertions(+), 38 deletions(-)

diff --git a/src/FxEngine/zbuffer.c b/src/FxEngine/zbuffer.c
index fdbaf71..150debe 100644
--- a/src/FxEngine/zbuffer.c
+++ b/src/FxEngine/zbuffer.c
@@ -24,48 +24,14 @@ static const uint32_t size_char = size_int32*sizeof(int32_t);
    utile pour le DMA */
 static const uint32_t size_blocks = size_char/32;
 
-/* en attente de reponse
-static int32_t address[size_uint32];
-*/
+// buffer situe a la fin de la RAM
+static const int32_t *address = (void *)0x88080000 - size_char;
 
-/** address
- * addresse du zbuffer
-**/
-static int32_t* address=0;
-static int32_t* clearval=0;
-
-#define ALIGN 32
-static void* buffer_malloc(uint_fast16_t size)
-{
-    void *mem = malloc(size+ALIGN+sizeof(void*));
-    void **ptr = (void**)((uintptr_t)(mem+ALIGN+sizeof(void*)) & ~(ALIGN-1));
-    ptr[-1] = mem;
-    return ptr;
-}
-
-static void buffer_free(void *ptr) 
-{
-    free(((void**)ptr)[-1]);
-}
+#include <gint/defs/attributes.h>
+GALIGNED(32) GSECTION(".rodata") static const int32_t clearval[8]={3000,3000,3000,3000,3000,3000,3000,3000};
 
 void FE_zbuffer_clear()
 {
-    if (address==0)
-    {
-        address = buffer_malloc(size_char);
-        clearval= buffer_malloc(32);
-
-        if (address==0||clearval==0) // cas de figure où il n'y a plus assez de RAM
-        {
-            dclear(C_WHITE);
-            dtext(1, 1, "Not enough RAM...", C_BLACK, C_NONE);
-            dupdate();
-            while (1==1)
-                getkey();
-        }
-        clearval[0]=3000; clearval[1]=3000; clearval[2]=3000; clearval[3]=3000; clearval[4]=3000; clearval[5]=3000; clearval[6]=3000; clearval[7]=3000;
-    }
-    // TODO déterminer le type d'effacement
     if (isSH3())
     { // effacement CPU
         uint_fast16_t indice;