From 40a7d70e68e13793a4c620c0c203ad810c4d69cb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Magalh=C3=A3es?= <joamag@gmail.com>
Date: Sun, 30 Jul 2023 12:26:13 +0100
Subject: [PATCH] chore: support for pending cycles
---
frontends/libretro/src/lib.rs | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/frontends/libretro/src/lib.rs b/frontends/libretro/src/lib.rs
index 5fcd455e..d07906c0 100644
--- a/frontends/libretro/src/lib.rs
+++ b/frontends/libretro/src/lib.rs
@@ -30,6 +30,7 @@ use crate::consts::{REGION_NTSC, RETRO_API_VERSION};
static mut EMULATOR: Option<GameBoy> = None;
static mut KEY_STATES: Option<HashMap<RetroJoypad, bool>> = None;
static mut FRAME_BUFFER: [u8; FRAME_BUFFER_RGB155_SIZE] = [0x00; FRAME_BUFFER_RGB155_SIZE];
+static mut PENDING_CYCLES: u32 = 0_u32;
static mut ENVIRONMENT_CALLBACK: Option<extern "C" fn(u32, *const c_void) -> bool> = None;
static mut VIDEO_REFRESH_CALLBACK: Option<extern "C" fn(*const u8, c_uint, c_uint, usize)> = None;
@@ -220,7 +221,7 @@ pub extern "C" fn retro_run() {
let mut last_frame = emulator.ppu_frame();
- let mut counter_cycles = 0_u32;
+ let mut counter_cycles = unsafe { PENDING_CYCLES };
let cycle_limit = (GameBoy::CPU_FREQ as f32 * emulator.multiplier() as f32
/ GameBoy::VISUAL_FREQ)
.round() as u32;
@@ -229,7 +230,7 @@ pub extern "C" fn retro_run() {
// limits the number of ticks to the typical number
// of cycles expected for the current logic cycle
if counter_cycles >= cycle_limit {
- //pending_cycles = counter_cycles - cycle_limit;
+ unsafe { PENDING_CYCLES = counter_cycles - cycle_limit };
break;
}
--
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