Vulkan wip

1 files changed, 77 insertions, 0 deletions

diff --git a/src/renderdoc.zig b/src/renderdoc.zig
new file mode 100644
index 0000000..48cbb16
--- /dev/null
+++ b/src/renderdoc.zig
@@ -0,0 +1,77 @@
+const std = @import("std");
+const c = @cImport({
+    @cInclude("renderdoc_app.h");
+    @cInclude("dlfcn.h");
+});
+
+fn fix_fields(comptime T: type) type {
+    const TypeId = std.builtin.TypeId;
+    var ti = @typeInfo(T);
+
+    const num_fields = ti.Struct.fields.len;
+    var fields = [_]TypeId.StructField{undefined} ** num_fields;
+    for (ti.Struct.fields) |field, i| {
+        var field_ti = @typeInfo(field.field_type);
+
+        switch (field_ti) {
+            .Optional => |opt| {
+                fields[i] = TypeId.StructField{
+                    .name = field.name,
+                    .field_type = opt.child,
+                    .default_value = @as(opt.child, fields[i].default_value),
+                    .is_comptime = field.is_comptime,
+                    .alignment = field.alignment,
+                };
+            },
+            else => {
+                fields[i] = field;
+            }
+        }
+    }
+    
+    ti.Struct.fields = fields[0..];
+    return @Type(.{
+        .Struct = .{
+            .layout = .Extern,
+            .fields = fields,
+            .decls = [_]TypeId.Declaration{},
+            .is_tuple = false,
+        },
+    });
+}
+
+const API = struct {
+    StartFrameCapture: fn (c.RENDERDOC_DevicePointer, c.RENDERDOC_WindowHandle) callconv(.C) void,
+    EndFrameCapture: fn (c.RENDERDOC_DevicePointer, c.RENDERDOC_WindowHandle) callconv(.C) u32,
+};
+
+pub var api: ?API = null;
+
+extern fn RENDERDOC_GetAPI(c.RENDERDOC_Version, [*c]?*c_void) callconv(.C) c_int;
+
+pub fn load_api() !void {
+    var tmp_api: ?*c.RENDERDOC_API_1_1_2 = null;
+    if (RENDERDOC_GetAPI(.eRENDERDOC_API_Version_1_1_2, @ptrCast([*c]?*c_void, &tmp_api)) != 1) {
+        return error.Unknown;
+    }
+
+    if (tmp_api) |_api| {
+        var local_api : API = undefined;
+        var have_all: bool = true;
+        if (_api.StartFrameCapture) |fp| {
+            local_api.StartFrameCapture = fp;
+        } else {
+            return error.NoStart;
+        }
+        
+        if (_api.EndFrameCapture) |fp| {
+            local_api.EndFrameCapture = fp;
+        } else {
+            return error.NoEnd;
+        }
+
+        api = local_api;
+    } else {
+        return error.ApiEmpty;
+    }
+}