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diff vdp.h @ 998:bf63cbf1d7bb

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Implement SAT cache. Causes some graphical corruption in Overdrive due to an unrelated bug.
author Michael Pavone <pavone@retrodev.com>
date Sat, 30 Apr 2016 15:31:48 -0700
parents 928442068afe
children e34334e6c682
line wrap: on
line diff
--- a/vdp.h	Sat Apr 30 10:47:29 2016 -0700
+++ b/vdp.h	Sat Apr 30 15:31:48 2016 -0700
@@ -21,6 +21,7 @@
 #define MAX_SPRITES_LINE_H32 16
 #define MAX_SPRITES_FRAME 80
 #define MAX_SPRITES_FRAME_H32 64
+#define SAT_CACHE_SIZE (MAX_SPRITES_FRAME * 4)
 
 #define FBUF_SHADOW 0x0001
 #define FBUF_HILIGHT 0x0010
@@ -158,6 +159,7 @@
 	int8_t      cur_slot;
 	sprite_draw sprite_draw_list[MAX_DRAWS];
 	sprite_info sprite_info_list[MAX_SPRITES_LINE];
+	uint8_t     sat_cache[SAT_CACHE_SIZE];
 	uint16_t    col_1;
 	uint16_t    col_2;
 	uint16_t    hv_latch;