S3 ViRGE fixes by TC995 and switched threads on Windows builds back to Win32 threads since the C++ threads were breaking the ViRGE blitting in some cases (eg. CD Gamer on 24 bpp).

src/qt/win_thread.c

@@ -0,0 +1,179 @@
+/*
+ * 86Box    A hypervisor and IBM PC system emulator that specializes in
+ *          running old operating systems and software designed for IBM
+ *          PC systems and compatibles from 1981 through fairly recent
+ *          system designs based on the PCI bus.
+ *
+ *          This file is part of the 86Box distribution.
+ *
+ *          Implement threads and mutexes for the Win32 platform.
+ *
+ *
+ *
+ * Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
+ *          Fred N. van Kempen, <decwiz@yahoo.com>
+ *
+ *          Copyright 2008-2018 Sarah Walker.
+ *          Copyright 2017-2018 Fred N. van Kempen.
+ */
+#define UNICODE
+#define BITMAP WINDOWS_BITMAP
+#include <windows.h>
+#include <windowsx.h>
+#include <process.h>
+#undef BITMAP
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include <86box/86box.h>
+#include <86box/plat.h>
+#include <86box/thread.h>
+
+typedef struct {
+    HANDLE handle;
+} win_event_t;
+
+/* For compatibility with thread.h, but Win32 does not allow named threads. */
+thread_t *
+thread_create_named(void (*func)(void *param), void *param, UNUSED(const char *name))
+{
+    uintptr_t bt = _beginthread(func, 0, param);
+    return ((thread_t *) bt);
+}
+
+int
+thread_test_mutex(thread_t *arg)
+{
+    if (arg == NULL)
+        return (0);
+
+    return (WaitForSingleObject(arg, 0) == WAIT_OBJECT_0) ? 1 : 0;
+}
+
+int
+thread_wait(thread_t *arg)
+{
+    if (arg == NULL)
+        return (0);
+
+    if (WaitForSingleObject(arg, INFINITE))
+        return (1);
+
+    return (0);
+}
+
+event_t *
+thread_create_event(void)
+{
+    win_event_t *ev = malloc(sizeof(win_event_t));
+
+    ev->handle = CreateEvent(NULL, FALSE, FALSE, NULL);
+
+    return ((event_t *) ev);
+}
+
+void
+thread_set_event(event_t *arg)
+{
+    win_event_t *ev = (win_event_t *) arg;
+
+    if (arg == NULL)
+        return;
+
+    SetEvent(ev->handle);
+}
+
+void
+thread_reset_event(event_t *arg)
+{
+    win_event_t *ev = (win_event_t *) arg;
+
+    if (arg == NULL)
+        return;
+
+    ResetEvent(ev->handle);
+}
+
+int
+thread_wait_event(event_t *arg, int timeout)
+{
+    win_event_t *ev = (win_event_t *) arg;
+
+    if (arg == NULL)
+        return (0);
+
+    if (ev->handle == NULL)
+        return (0);
+
+    if (timeout == -1)
+        timeout = INFINITE;
+
+    if (WaitForSingleObject(ev->handle, timeout))
+        return (1);
+
+    return (0);
+}
+
+void
+thread_destroy_event(event_t *arg)
+{
+    win_event_t *ev = (win_event_t *) arg;
+
+    if (arg == NULL)
+        return;
+
+    CloseHandle(ev->handle);
+
+    free(ev);
+}
+
+mutex_t *
+thread_create_mutex(void)
+{
+    mutex_t *mutex = malloc(sizeof(CRITICAL_SECTION));
+
+    InitializeCriticalSection(mutex);
+
+    return mutex;
+}
+
+int
+thread_wait_mutex(mutex_t *mutex)
+{
+    if (mutex == NULL)
+        return (0);
+
+    LPCRITICAL_SECTION critsec = (LPCRITICAL_SECTION) mutex;
+
+    EnterCriticalSection(critsec);
+
+    return 1;
+}
+
+int
+thread_release_mutex(mutex_t *mutex)
+{
+    if (mutex == NULL)
+        return (0);
+
+    LPCRITICAL_SECTION critsec = (LPCRITICAL_SECTION) mutex;
+
+    LeaveCriticalSection(critsec);
+
+    return 1;
+}
+
+void
+thread_close_mutex(mutex_t *mutex)
+{
+    if (mutex == NULL)
+        return;
+
+    LPCRITICAL_SECTION critsec = (LPCRITICAL_SECTION) mutex;
+
+    DeleteCriticalSection(critsec);
+
+    free(critsec);
+}