libobs/graphics: Add gs_is_monitor_hdr

Only Windows is implemented for now. Mac/Linux return false for now.

libobs/graphics/graphics-imports.c

@@ -195,6 +195,8 @@ bool load_graphics_imports(struct gs_exports *exports, void *module,
 	GRAPHICS_IMPORT_OPTIONAL(device_nv12_available);
 	GRAPHICS_IMPORT_OPTIONAL(device_p010_available);
 
+	GRAPHICS_IMPORT(device_is_monitor_hdr);
+
 	GRAPHICS_IMPORT(device_debug_marker_begin);
 	GRAPHICS_IMPORT(device_debug_marker_end);
 

libobs/graphics/graphics-internal.h

@@ -273,6 +273,8 @@ struct gs_exports {
 	bool (*device_nv12_available)(gs_device_t *device);
 	bool (*device_p010_available)(gs_device_t *device);
 
+	bool (*device_is_monitor_hdr)(gs_device_t *device, void *monitor);
+
 	void (*device_debug_marker_begin)(gs_device_t *device,
 					  const char *markername,
 					  const float color[4]);

libobs/graphics/graphics.c

@@ -2840,6 +2840,15 @@ bool gs_p010_available(void)
 		thread_graphics->device);
 }
 
+bool gs_is_monitor_hdr(void *monitor)
+{
+	if (!gs_valid("gs_is_monitor_hdr"))
+		return false;
+
+	return thread_graphics->exports.device_is_monitor_hdr(
+		thread_graphics->device, monitor);
+}
+
 void gs_debug_marker_begin(const float color[4], const char *markername)
 {
 	if (!gs_valid("gs_debug_marker_begin"))

libobs/graphics/graphics.h

@@ -851,6 +851,8 @@ EXPORT bool gs_timer_range_get_data(gs_timer_range_t *range, bool *disjoint,
 EXPORT bool gs_nv12_available(void);
 EXPORT bool gs_p010_available(void);
 
+EXPORT bool gs_is_monitor_hdr(void *monitor);
+
 #define GS_USE_DEBUG_MARKERS 0
 #if GS_USE_DEBUG_MARKERS
 static const float GS_DEBUG_COLOR_DEFAULT[] = {0.5f, 0.5f, 0.5f, 1.0f};