From 364eea8654a69dd0e79cdfa86c10992e6e275ccd Mon Sep 17 00:00:00 2001
From: Tomasz Kramkowski <tk@the-tk.com>
Date: Wed, 28 Feb 2018 00:35:15 +0000
Subject: init commit

---
 validation.c | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 validation.c

(limited to 'validation.c')

diff --git a/validation.c b/validation.c
new file mode 100644
index 0000000..6f24177
--- /dev/null
+++ b/validation.c
@@ -0,0 +1,103 @@
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <vulkan/vulkan.h>
+
+
+#include "eprintf.h"
+#include "nelem.h"
+#define WITH_VALIDATION
+#include "validation.h"
+
+static const char *vlayers[] = {
+	"VK_LAYER_LUNARG_standard_validation",
+};
+static const char *vexts[] = {
+	VK_EXT_DEBUG_REPORT_EXTENSION_NAME,
+};
+
+// callback: Validation callback
+static VKAPI_ATTR VkBool32 VKAPI_CALL callback(
+	VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT type,
+	uint64_t obj, size_t location, int32_t code, const char
+	*prefix, const char *msg, void *data)
+{
+	(void)flags; (void)type; (void)obj; (void)location;
+	(void)code; (void)prefix; (void)data;
+	weprintf("Validation: %s", msg);
+
+	return VK_FALSE;
+}
+
+// havelayers: Check if all required validation layers are supported
+static bool havelayers(void)
+{
+	VkLayerProperties *instlrp;
+	uint32_t ninstlrp;
+	static enum { UNK, NO, YES } have = UNK;
+
+	if (have != UNK) return have == YES;
+	have = NO;
+
+	vkEnumerateInstanceLayerProperties(&ninstlrp, NULL);
+	instlrp = emalloc(ninstlrp * sizeof *instlrp);
+	vkEnumerateInstanceLayerProperties(&ninstlrp, instlrp);
+
+	for (int vl = 0; vl < NELEM(vlayers); vl++) {
+		for (uint32_t il = 0; il < ninstlrp; il++)
+			if (strcmp(vlayers[vl], instlrp[il].layerName) == 0)
+				goto next;
+		goto fail_layers;
+	next:	;
+	}
+	have = YES;
+fail_layers: free(instlrp);
+
+	return have == YES;
+}
+
+// validation_info: Append validation layers and extension
+void validation_info(struct strlist *layers, struct strlist *exts)
+{
+	if (havelayers() && layers != NULL)
+		sl_append(layers, vlayers, NELEM(vlayers));
+	if (exts != NULL) sl_append(exts, vexts, NELEM(vexts));
+}
+
+// validation_createcb: Create the validation callback
+void *validation_createcb(VkInstance inst)
+{
+	VkDebugReportCallbackCreateInfoEXT rccinf;
+	PFN_vkCreateDebugReportCallbackEXT func;
+	VkDebugReportCallbackEXT *cb;
+
+	func = (PFN_vkCreateDebugReportCallbackEXT)
+		vkGetInstanceProcAddr(inst, "vkCreateDebugReportCallbackEXT");
+	if (func == NULL)
+		eprintf("Validation: Could not create callback: Failed to get constructor");
+
+	rccinf = (VkDebugReportCallbackCreateInfoEXT){
+		.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT,
+		.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT,
+		.pfnCallback = callback,
+	};
+
+	cb = emalloc(sizeof *cb);
+	if (func(inst, &rccinf, NULL, cb) != VK_SUCCESS)
+		eprintf("Validation: Could not create callback: Constructor");
+
+	return cb;
+}
+
+// validation_destroycb: Destroy the validation callback
+void validation_destroycb(VkInstance inst, void *cb)
+{
+	PFN_vkDestroyDebugReportCallbackEXT func;
+
+	func = (PFN_vkDestroyDebugReportCallbackEXT)
+		vkGetInstanceProcAddr(inst, "vkDestroyDebugReportCallbackEXT");
+	if (func == NULL)
+		eprintf("Validation: Could not destroy callback: Failed to get destructor");
+	func(inst, cb, NULL);
+	free(cb);
+}
-- 
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