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authorMichael Pavone <pavone@retrodev.com>2017-05-05 23:45:45 -0700
committerMichael Pavone <pavone@retrodev.com>2017-05-05 23:45:45 -0700
commit2b007cf162c8f2c6f96caad3e8f7ce440170f8d5 (patch)
treea8fe11eecec1bd66a532f1ae70d69f86116e76f4
parentaf64ed7d263f8be0735de61beb8d88ccbf4d60a8 (diff)
Fix sprite rendering in double resolution interlace mode
-rw-r--r--vdp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/vdp.c b/vdp.c
index be89bd7..22268f9 100644
--- a/vdp.c
+++ b/vdp.c
@@ -579,7 +579,7 @@ static void scan_sprite_table(uint32_t line, vdp_context * context)
}
uint16_t address = context->sprite_index * 4;
line += ymin;
- line &= 0x1FF;
+ line &= ymask;
uint16_t y = ((context->sat_cache[address] & 0x3) << 8 | context->sat_cache[address+1]) & ymask;
uint8_t height = ((context->sat_cache[address+2] & 0x3) + 1) * height_mult;
//printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height);
@@ -693,7 +693,7 @@ static void read_sprite_x(uint32_t line, vdp_context * context)
uint8_t pal_priority = (tileinfo >> 9) & 0x70;
uint8_t row;
uint16_t cache_addr = context->sprite_info_list[context->cur_slot].index * 4;
- line = (line + ymin) & 0x1FF;
+ line = (line + ymin) & ymask;
int16_t y = ((context->sat_cache[cache_addr] << 8 | context->sat_cache[cache_addr+1]) & ymask)/* - ymin*/;
if (tileinfo & MAP_BIT_V_FLIP) {
row = (y + height - 1) - line;