Gets OpenGL output working with testing VM and display

* Refactors test routine to its own thread to not interfere with OpenGL on main thread
    * Misc TESTING/HEADLESS switch tweaks

src/joystick.c

@@ -246,7 +246,7 @@ void c_calibrate_joystick()
 extern void gldriver_joystick_reset(void);
 void c_joystick_reset()
 {
-#if !HEADLESS
+#if !defined(TESTING)
     if (!is_headless) {
         gldriver_joystick_reset();
     }

src/meta/debugger.c

@@ -1160,6 +1160,7 @@ static int begin_cpu_stepping() {
         }
 
 #ifdef TESTING
+#warning FIXME TODO : this is mis-named now ... GLVideo pushes sync state so we don't need to force poll ... but we need this to type the testing strings ... should refactor to leverage a common codepath, preferablly using the 'typing' mechanism here...
         extern void testing_video_sync();
         testing_video_sync();
 #else

src/test/testcommon.c

@@ -60,20 +60,8 @@ void test_common_setup() {
 // ----------------------------------------------------------------------------
 // test video functions and stubs
 
-extern void video_driver_sync(void);
 void testing_video_sync() {
 
-#if !HEADLESS
-    if (!is_headless) {
-        clock_gettime(CLOCK_MONOTONIC, &ti);
-        struct timespec deltat = timespec_diff(t0, ti, NULL);
-        if (deltat.tv_sec || (deltat.tv_nsec >= NANOSECONDS/15) ) {
-            video_driver_sync();
-            ti = t0;
-        }
-    }
-#endif
-
     if (!input_length) {
         input_length = strlen(input_str);
     }
@@ -108,7 +96,12 @@ void test_breakpoint(void *arg) {
     fprintf(GREATEST_STDOUT, "set breakpoint on test_breakpoint to check for problems...\n");
 #if !HEADLESS
     if (!is_headless) {
-        video_driver_sync();
+        fprintf(GREATEST_STDOUT, "DISPLAY NOTE: busy-spinning, needs gdb/lldb intervention to continue...\n");
+        static volatile bool debug_continue = false;
+        while (!debug_continue) {
+            struct timespec ts = { .tv_sec=0, .tv_nsec=33333333 };
+            nanosleep(&ts, NULL);
+        }
     }
 #endif
 }
@@ -136,7 +129,7 @@ void test_common_init(bool do_cputhread) {
         pthread_create(&cpu_thread_id, NULL, (void *) &cpu_thread, (void *)NULL);
         c_debugger_set_watchpoint(WATCHPOINT_ADDR);
         if (is_headless) {
-            c_debugger_set_timeout(5);
+            c_debugger_set_timeout(10);
         } else {
             fprintf(stderr, "NOTE : RUNNING WITH DISPLAY ... pass HEADLESS=1 to environment to run test in faster headless mode\n");
             c_debugger_set_timeout(0);

src/test/testdisplay.c

@@ -339,18 +339,12 @@ TEST test_80col_hires() {
 // ----------------------------------------------------------------------------
 // Test Suite
 
-GREATEST_SUITE(test_suite_display) {
+static int begin_video = -1;
 
-    GREATEST_SET_SETUP_CB(testdisplay_setup, NULL);
-    GREATEST_SET_TEARDOWN_CB(testdisplay_teardown, NULL);
-
-    srandom(time(NULL));
-
-    test_common_init(/*cputhread*/true);
-
-    pthread_mutex_lock(&interface_mutex);
+static void *test_thread(void *dummyptr) {
 
     // TESTS --------------------------
+    begin_video=!is_headless;
 
     RUN_TESTp(test_boot_disk);
 
@@ -454,6 +448,32 @@ GREATEST_SUITE(test_suite_display) {
     // ...
     c_eject_6(0);
     pthread_mutex_unlock(&interface_mutex);
+
+    GREATEST_MAIN_END();
+}
+
+GREATEST_SUITE(test_suite_display) {
+
+    GREATEST_SET_SETUP_CB(testdisplay_setup, NULL);
+    GREATEST_SET_TEARDOWN_CB(testdisplay_teardown, NULL);
+
+    srandom(time(NULL));
+
+    pthread_mutex_lock(&interface_mutex);
+
+    test_common_init(/*cputhread*/true);
+
+    pthread_t p;
+    pthread_create(&p, NULL, (void *)&test_thread, (void *)NULL);
+
+    while (begin_video < 0) {
+        struct timespec ts = { .tv_sec=0, .tv_nsec=33333333 };
+        nanosleep(&ts, NULL);
+    }
+    if (begin_video) {
+        video_main_loop();
+    }
+    pthread_join(p, NULL);
 }
 
 SUITE(test_suite_display);
@@ -462,7 +482,6 @@ GREATEST_MAIN_DEFS();
 int test_display(int argc, char **argv) {
     GREATEST_MAIN_BEGIN();
     RUN_SUITE(test_suite_display);
-    GREATEST_MAIN_END();
 }
 
 #if !defined(__APPLE__)

src/test/testvm.c

@@ -3409,19 +3409,12 @@ TEST test_check_cxrom(bool flag_cxrom) {
 // ----------------------------------------------------------------------------
 // Test Suite
 
-GREATEST_SUITE(test_suite_vm) {
+static int begin_video = -1;
 
-    GREATEST_SET_SETUP_CB(testvm_setup, NULL);
-    GREATEST_SET_TEARDOWN_CB(testvm_teardown, NULL);
-
-    c_read_random(0x0);
-    srandom(0); // force a known sequence
-
-    test_common_init(/*cputhread*/true);
-
-    pthread_mutex_lock(&interface_mutex);
+static void *test_thread(void *dummyptr) {
 
     // TESTS --------------------------
+    begin_video=!is_headless;
 
     RUN_TESTp(test_boot_disk_bytes);
     RUN_TESTp(test_boot_disk_cputrace);
@@ -3603,6 +3596,33 @@ GREATEST_SUITE(test_suite_vm) {
     // ...
     c_eject_6(0);
     pthread_mutex_unlock(&interface_mutex);
+
+    GREATEST_MAIN_END();
+}
+
+GREATEST_SUITE(test_suite_vm) {
+
+    GREATEST_SET_SETUP_CB(testvm_setup, NULL);
+    GREATEST_SET_TEARDOWN_CB(testvm_teardown, NULL);
+
+    c_read_random(0x0);
+    srandom(0); // force a known sequence
+
+    pthread_mutex_lock(&interface_mutex);
+
+    test_common_init(/*cputhread*/true);
+
+    pthread_t p;
+    pthread_create(&p, NULL, (void *)&test_thread, (void *)NULL);
+
+    while (begin_video < 0) {
+        struct timespec ts = { .tv_sec=0, .tv_nsec=33333333 };
+        nanosleep(&ts, NULL);
+    }
+    if (begin_video) {
+        video_main_loop();
+    }
+    pthread_join(p, NULL);
 }
 
 SUITE(test_suite_vm);
@@ -3611,7 +3631,6 @@ GREATEST_MAIN_DEFS();
 int test_vm(int argc, char **argv) {
     GREATEST_MAIN_BEGIN();
     RUN_SUITE(test_suite_vm);
-    GREATEST_MAIN_END();
 }
 
 #if !defined(__APPLE__)

src/video/glinput.c

@@ -15,6 +15,8 @@
 #include "video/glinput.h"
 #include <math.h>
 
+#if !defined(TESTING)
+
 //----------------------------------------------------------------------------
 //
 // keyboard
@@ -142,7 +144,6 @@ static int _glutkey_to_scancode(int key) {
     return key;
 }
 
-#if !defined(TESTING)
 void gldriver_on_key_down(unsigned char key, int x, int y) {
     _capslock_hackaround();
     //LOG("onKeyDown %02x(%d)'%c'", key, key, key);
@@ -202,7 +203,6 @@ static void gldriver_joystick_callback(unsigned int buttonMask, int x, int y, in
         joy_y = 0xFF;
     }
 }
-#endif
 
 //----------------------------------------------------------------------------
 //
@@ -235,3 +235,5 @@ void gldriver_joystick_reset(void) {
     glutJoystickFunc(gldriver_joystick_callback, (int)JOYSTICK_POLL_INTERVAL_MILLIS);
 }
 
+#endif // TESTING
+

src/video/glvideo.c

@@ -526,9 +526,8 @@ static void gldriver_init_common(void) {
     demoSource *vtxSource = _create_shader_source("Basic.vsh");
     demoSource *frgSource = _create_shader_source("Basic.fsh");
 
-    // Build Program
+    // Build/use Program
     program = _build_program(vtxSource, frgSource, /*withNormal:*/false, /*withTexcoord:*/true);
-    glUseProgram(program);
 
     srcDestroySource(vtxSource);
     srcDestroySource(frgSource);
@@ -560,7 +559,7 @@ static void gldriver_init_common(void) {
     GL_ERRLOG("finished initialization");
 
 #if !defined(__APPLE__)
-    glBindFramebuffer(GL_FRAMEBUFFER, defaultFBO);
+    //glBindFramebuffer(GL_FRAMEBUFFER, defaultFBO);
 #endif
     GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
     if (status != GL_FRAMEBUFFER_COMPLETE) {
@@ -587,10 +586,6 @@ static void gldriver_update(void) {
 #endif
 
 static void gldriver_render(void) {
-    if (is_headless) {
-        return;
-    }
-
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
 #if PERSPECTIVE
@@ -706,14 +701,14 @@ static void gldriver_init_glut(GLuint fbo) {
     glutIdleFunc(gldriver_update);
     glutDisplayFunc(gldriver_render);
     glutReshapeFunc(gldriver_reshape);
-    //glutMouseFunc(gldriver_mouse);
-    //glutMotionFunc(gldriver_mouse_drag);
 
 #if !defined(TESTING)
     glutKeyboardFunc(gldriver_on_key_down);
     glutKeyboardUpFunc(gldriver_on_key_up);
     glutSpecialFunc(gldriver_on_key_special_down);
     glutSpecialUpFunc(gldriver_on_key_special_up);
+    //glutMouseFunc(gldriver_mouse);
+    //glutMotionFunc(gldriver_mouse_drag);
 #endif
 }
 #endif
@@ -749,15 +744,7 @@ void video_driver_reshape(int w, int h) {
     gldriver_reshape(w, h);
 }
 
-void video_driver_sync(void) {
-    if (is_headless) {
-        return;
-    }
-#if USE_GLUT
-    glutPostRedisplay();
-#endif
-}
-
 void video_driver_shutdown(void) {
     gldriver_shutdown();
 }
+