Fixed the background blur behavior when the menu is opened on a syste…

…m with over 24 days of uptime, and a few related type-casts.

In case of such uptime, Sys_Milliseconds() returns a value over 2^31, which is cast to a negative int.

src/refresh/vkpt/bloom.c

@@ -101,13 +101,13 @@ void vkpt_bloom_update(QVKUniformBuffer_t * ubo, float frame_time, qboolean unde
 		bloom_sigma = mix(cvar_bloom_sigma->value, cvar_bloom_sigma_water->value, under_water_animation);
 	}
 
-	static int menu_start_ms = -1;
+	static uint32_t menu_start_ms = 0;
 
 	if (menu_mode)
 	{
-		if (menu_start_ms < 0)
+		if (menu_start_ms == 0)
 			menu_start_ms = Sys_Milliseconds();
-		int current_ms = Sys_Milliseconds();
+		uint32_t current_ms = Sys_Milliseconds();
 
 		float phase = max(0.f, min(1.f, (float)(current_ms - menu_start_ms) / 150.f));
 		phase = powf(phase, 0.25f);
@@ -118,7 +118,7 @@ void vkpt_bloom_update(QVKUniformBuffer_t * ubo, float frame_time, qboolean unde
 	}
 	else
 	{
-		menu_start_ms = -1;
+		menu_start_ms = 0;
 
 		ubo->bloom_intensity = bloom_intensity;
 	}

src/refresh/vkpt/physical_sky.c

@@ -551,15 +551,15 @@ static void change_image_layouts(VkImage image, const VkImageSubresourceRange* s
 static void
 process_gamepad_input()
 {
-	static int prev_milliseconds = 0;
-	int curr_milliseconds = Sys_Milliseconds();
+	static uint32_t prev_milliseconds = 0;
+	uint32_t curr_milliseconds = Sys_Milliseconds();
 	if (!prev_milliseconds)
 	{
 		prev_milliseconds = curr_milliseconds;
 		return;
 	}
 
-	int frame_time = curr_milliseconds - prev_milliseconds;
+	uint32_t frame_time = curr_milliseconds - prev_milliseconds;
 	prev_milliseconds = curr_milliseconds;
 
 	if (frame_time > 1000)
@@ -575,10 +575,10 @@ process_gamepad_input()
 		dx = powf(max(fabsf(dx) - deadzone, 0.f) / limit, 2.f) * (dx < 0 ? -1.f : 1.f);
 		dy = powf(max(fabsf(dy) - deadzone, 0.f) / limit, 2.f) * (dy < 0 ? -1.f : 1.f);
 
-		dx *= frame_time * 0.05f;
-		dy *= frame_time * 0.05f;
+		dx *= (float)frame_time * 0.05f;
+		dy *= (float)frame_time * 0.05f;
 
-		if (dx)
+		if (dx != 0.f)
 		{
 			float azimuth = sun_azimuth->value;
 			azimuth -= dx;
@@ -588,7 +588,7 @@ process_gamepad_input()
 			sun_azimuth->changed(sun_azimuth);
 		}
 
-		if (dy)
+		if (dy != 0.f)
 		{
 			float elevation = sun_elevation->value;
 			elevation -= dy;