From f7c3bd651e949a912b3b4546500594d2b13341cf Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jean-Philippe=20Bruy=C3=A8re?= <jp_bruyere@hotmail.com>
Date: Sat, 25 Dec 2021 01:49:48 +0100
Subject: [PATCH] add layer check functions in device internal

---
 src/vkvg_device_internal.c | 18 ++++++++++++++++++
 src/vkvg_device_internal.h |  3 +++
 2 files changed, 21 insertions(+)

diff --git a/src/vkvg_device_internal.c b/src/vkvg_device_internal.c
index 5f55970..a9d6485 100644
--- a/src/vkvg_device_internal.c
+++ b/src/vkvg_device_internal.c
@@ -525,6 +525,24 @@ void _instance_extensions_check_init () {
 void _instance_extensions_check_release () {
 	free (instExtProps);
 }
+
+static VkLayerProperties* instLayerProps;
+static uint32_t instance_layer_count;
+bool _layer_is_present (const char* layerName) {
+	for (uint32_t i=0; i<instance_layer_count; i++) {
+		if (!strcmp(instLayerProps[i].layerName, layerName))
+			return true;
+	}
+	return false;
+}
+void _layers_check_init () {
+	VK_CHECK_RESULT(vkEnumerateInstanceLayerProperties(&instance_layer_count, NULL));
+	instLayerProps =(VkLayerProperties*)malloc(instance_layer_count * sizeof(VkLayerProperties));
+	VK_CHECK_RESULT(vkEnumerateInstanceLayerProperties(&instance_layer_count, instLayerProps));
+}
+void _layers_check_release () {
+	free (instLayerProps);
+}
 void _dump_image_format_properties (VkvgDevice dev, VkFormat format) {
 	/*VkImageFormatProperties imgProps;
 	VK_CHECK_RESULT(vkGetPhysicalDeviceImageFormatProperties(dev->phy,
diff --git a/src/vkvg_device_internal.h b/src/vkvg_device_internal.h
index 4e6653f..5ff8dc9 100644
--- a/src/vkvg_device_internal.h
+++ b/src/vkvg_device_internal.h
@@ -125,4 +125,7 @@ bool _instance_extension_supported		(const char* instanceName);
 void _instance_extensions_check_init	();
 void _instance_extensions_check_release ();
 
+bool _layer_is_present (const char* layerName);
+void _layers_check_init ();
+void _layers_check_release ();
 #endif
-- 
2.47.3