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add debug messenger to graphics context

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This commit is contained in:
zac
2025-08-30 18:24:33 +10:00
parent 3c7d4021e9
commit ecf97034c4
1 changed files with 31 additions and 1 deletions
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32
examples/graphics_context.zig
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@@ -35,6 +35,7 @@ pub const GraphicsContext = struct {
vkb: BaseWrapper,
instance: Instance,
debug_messenger: vk.DebugUtilsMessengerEXT,
surface: vk.SurfaceKHR,
pdev: vk.PhysicalDevice,
props: vk.PhysicalDeviceProperties,
@@ -51,7 +52,8 @@ pub const GraphicsContext = struct {
var extension_names: std.ArrayList([*:0]const u8) = .empty;
defer extension_names.deinit(allocator);
// these extensions are to support vulkan in mac os
try extension_names.append(allocator, vk.extensions.ext_debug_utils.name);
// the following extensions are to support vulkan in mac os
// see https://github.com/glfw/glfw/issues/2335
try extension_names.append(allocator, vk.extensions.khr_portability_enumeration.name);
try extension_names.append(allocator, vk.extensions.khr_get_physical_device_properties_2.name);
@@ -81,6 +83,22 @@ pub const GraphicsContext = struct {
self.instance = Instance.init(instance, vki);
errdefer self.instance.destroyInstance(null);
self.debug_messenger = try self.instance.createDebugUtilsMessengerEXT(&.{
.message_severity = .{
//.verbose_bit_ext = true,
//.info_bit_ext = true,
.warning_bit_ext = true,
.error_bit_ext = true,
},
.message_type = .{
.general_bit_ext = true,
.validation_bit_ext = true,
.performance_bit_ext = true,
},
.pfn_user_callback = &debugUtilsMessengerCallback,
.p_user_data = null,
}, null);
self.surface = try createSurface(self.instance, window);
errdefer self.instance.destroySurfaceKHR(self.surface, null);
@@ -107,6 +125,7 @@ pub const GraphicsContext = struct {
pub fn deinit(self: GraphicsContext) void {
self.dev.destroyDevice(null);
self.instance.destroySurfaceKHR(self.surface, null);
self.instance.destroyDebugUtilsMessengerEXT(self.debug_messenger, null);
self.instance.destroyInstance(null);
// Don't forget to free the tables to prevent a memory leak.
@@ -196,6 +215,17 @@ const QueueAllocation = struct {
present_family: u32,
};
fn debugUtilsMessengerCallback(severity: vk.DebugUtilsMessageSeverityFlagsEXT, msg_type: vk.DebugUtilsMessageTypeFlagsEXT, callback_data: ?*const vk.DebugUtilsMessengerCallbackDataEXT, _: ?*anyopaque) callconv(.c) vk.Bool32 {
const severity_str = if (severity.verbose_bit_ext) "verbose" else if (severity.info_bit_ext) "info" else if (severity.warning_bit_ext) "warning" else if (severity.error_bit_ext) "error" else "unknown";
const type_str = if (msg_type.general_bit_ext) "general" else if (msg_type.validation_bit_ext) "validation" else if (msg_type.performance_bit_ext) "performance" else if (msg_type.device_address_binding_bit_ext) "device addr" else "unknown";
const message: [*c]const u8 = if (callback_data) |cb_data| cb_data.p_message else "NO MESSAGE!";
std.debug.print("[{s}][{s}]. Message:\n {s}\n", .{ severity_str, type_str, message });
return .false;
}
fn pickPhysicalDevice(
instance: Instance,
allocator: Allocator,