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Voodoo: smooth V1/V2 sync and Windows waits

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Make LFB relax/front-sync the default for V1/V2, keep wait stats opt-in, document sync behavior, and reduce Windows swap/event stalls.
This commit is contained in:
AITUS95
2026-01-18 03:13:34 +01:00
parent b3b6943055
commit e414d9ab55
3 changed files with 524 additions and 33 deletions
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45
src/include/86box/vid_voodoo_common.h
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@@ -74,6 +74,13 @@ typedef union rgba_u {
#define FIFO_FULL ((voodoo->fifo_write_idx - voodoo->fifo_read_idx) >= FIFO_SIZE - 4)
#define FIFO_EMPTY (voodoo->fifo_read_idx == voodoo->fifo_write_idx)
#define VOODOO_BUF_FRONT 0
#define VOODOO_BUF_BACK 1
#define VOODOO_BUF_AUX 2
#define VOODOO_BUF_UNKNOWN 3
#define VOODOO_BUF_COUNT 4
#define VOODOO_BUF_NONE 0xff
#define FIFO_TYPE 0xff000000
#define FIFO_ADDR 0x00ffffff
@@ -98,6 +105,8 @@ typedef struct
{
uint32_t addr_type;
uint32_t val;
uint8_t target_buf;
uint8_t pad[3];
} fifo_entry_t;
typedef struct voodoo_params_t {
@@ -356,6 +365,8 @@ typedef struct voodoo_t {
event_t *wake_fifo_thread;
event_t *wake_main_thread;
event_t *fifo_not_full_event;
event_t *fifo_empty_event;
ATOMIC_INT fifo_empty_signaled;
event_t *render_not_full_event[4];
event_t *wake_render_thread[4];
@@ -399,6 +410,8 @@ typedef struct voodoo_t {
ATOMIC_INT cmd_written;
ATOMIC_INT cmd_written_fifo;
ATOMIC_INT cmd_written_fifo_2;
ATOMIC_INT pending_fb_writes_buf[VOODOO_BUF_COUNT];
ATOMIC_INT pending_draw_cmds_buf[VOODOO_BUF_COUNT];
voodoo_params_t params_buffer[PARAM_SIZE];
ATOMIC_INT params_read_idx[4];
@@ -627,6 +640,12 @@ typedef struct voodoo_t {
int fb_write_buffer;
int fb_draw_buffer;
int buffer_cutoff;
int queued_disp_buffer;
int queued_draw_buffer;
int queued_fb_write_buffer;
int queued_fb_draw_buffer;
uint32_t queued_lfbMode;
uint32_t queued_fbzMode;
uint32_t tile_base;
uint32_t tile_stride;
@@ -657,6 +676,32 @@ typedef struct voodoo_t {
uint64_t time;
int render_time[4];
uint64_t fifo_full_waits;
uint64_t fifo_full_wait_ticks;
uint64_t fifo_full_spin_checks;
uint64_t fifo_empty_waits;
uint64_t fifo_empty_wait_ticks;
uint64_t fifo_empty_spin_checks;
uint64_t render_waits;
uint64_t render_wait_ticks;
uint64_t render_wait_spin_checks;
uint64_t readl_fb_count;
uint64_t readl_fb_sync_count;
uint64_t readl_fb_nosync_count;
uint64_t readl_fb_relaxed_count;
uint64_t readl_fb_sync_buf[3];
uint64_t readl_fb_nosync_buf[3];
uint64_t readl_fb_relaxed_buf[3];
uint64_t readl_reg_count;
uint64_t readl_tex_count;
int wait_stats_enabled;
int wait_stats_explicit;
int lfb_relax_enabled;
int lfb_relax_full;
int lfb_relax_ignore_cmdfifo;
int lfb_relax_ignore_draw;
int lfb_relax_ignore_fb_writes;
int lfb_relax_front_sync;
int force_blit_count;
int can_blit;