gpgx waterbox: move bg_pattern_cache to alloc_invisible

BizHawk.Emulation.Cores/Consoles/Sega/gpgx/GPGX.IStatable.cs

@@ -40,6 +40,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 			Core.gpgx_set_input_callback(InputCallback);
 			RefreshMemCallbacks();
 			Core.gpgx_set_cdd_callback(cd_callback_handle);
+			Core.gpgx_invalidate_pattern_cache();
 			UpdateVideo();
 		}
 

BizHawk.Emulation.Cores/Consoles/Sega/gpgx/LibGPGX.cs

@@ -304,9 +304,18 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.gpgx
 		[BizImport(CallingConvention.Cdecl)]
 		public abstract void gpgx_poke_vram(int addr, byte value);
 
-		[BizImport(CallingConvention.Cdecl)]
+		/// <summary>
+		/// regenerate whatever portions of the bg pattern cache are currently dirty.
+		/// </summary>
+		[BizImport(CallingConvention.Cdecl)] // the core will handle this itself; you only need to call this when using the cache for your own purposes
 		public abstract void gpgx_flush_vram();
 
+		/// <summary>
+		/// mark the bg pattern cache as dirty
+		/// </summary>
+		[BizImport(CallingConvention.Cdecl)]
+		public abstract void gpgx_invalidate_pattern_cache();
+
 		[StructLayout(LayoutKind.Sequential)]
 		public struct RegisterInfo
 		{

waterbox/gpgx/cinterface/cinterface.c

@@ -211,7 +211,7 @@ typedef struct
 } vdpview_t;
 
 
-extern uint8 bg_pattern_cache[];
+extern uint8 *bg_pattern_cache;
 extern uint32 pixel[];
 
 GPGX_EX void gpgx_get_vdp_view(vdpview_t *view)
@@ -509,6 +509,7 @@ GPGX_EX int gpgx_init(const char *feromextension, ECL_ENTRY int (*feload_archive
 	bitmap.pitch = 1024 * 4;
 	bitmap.data = alloc_invisible(2 * 1024 * 1024);
 	tempsram = alloc_invisible(24 * 1024);
+	bg_pattern_cache = alloc_invisible(0x80000);
 
 	ext.md_cart.rom = alloc_sealed(32 * 1024 * 1024);
 	scd.bootrom = malloc(0x20000); // FIXME: this should be sealed, but that crashes. huh?
@@ -617,6 +618,11 @@ GPGX_EX void gpgx_set_draw_mask(int mask)
 		color_update_m5(0x00, *(uint16 *)&cram[border << 1]);
 }
 
+GPGX_EX void gpgx_invalidate_pattern_cache(void)
+{
+    vdp_invalidate_full_cache();
+}
+
 typedef struct
 {
 	unsigned int value;

waterbox/gpgx/core/vdp_ctrl.c

@@ -203,6 +203,16 @@ void flush_vram_cache(void)
     }
 }
 
+void vdp_invalidate_full_cache(void)
+{
+    bg_list_index = 0x800;
+    for (int i=0;i<bg_list_index;i++)
+    {
+        bg_name_list[i] = i;
+        bg_name_dirty[i] = 0xFF;
+    }
+}
+
 /*--------------------------------------------------------------------------*/
 /* Init, reset, context functions                                           */
 /*--------------------------------------------------------------------------*/

waterbox/gpgx/core/vdp_ctrl.h

@@ -104,5 +104,6 @@ extern int vdp_68k_irq_ack(int int_level);
 
 void write_vram_byte(int addr, uint8 val);
 void flush_vram_cache(void);
+void vdp_invalidate_full_cache(void);
 
 #endif /* _VDP_H_ */

waterbox/gpgx/core/vdp_render.c

@@ -560,7 +560,7 @@ static const uint32 tms_palette[16] =
 #endif
 
 /* Cached and flipped patterns */
-uint8 bg_pattern_cache[0x80000];
+uint8 *bg_pattern_cache;
 
 /* Sprite pattern name offset look-up table (Mode 5) */
 static uint8 name_lut[0x400];