fill buffer fix

build.zig

@@ -246,7 +246,7 @@ fn addMultithreadedCTS(b: *std.Build, target: std.Build.ResolvedTarget, impl: *c
         },
     }));
 
-    const mustpass_path = try cts.path("mustpass/1.0.0/vk-default.txt").getPath3(b, null).toString(b.allocator);
+    const mustpass_path = try cts.path("mustpass/master/vk-default.txt").getPath3(b, null).toString(b.allocator);
     const cts_exe_path = try cts_exe_name.getPath3(b, null).toString(b.allocator);
 
     const run = b.addSystemCommand(&[_][]const u8{"deqp-runner"});

src/soft/Executor.zig

@@ -69,7 +69,13 @@ fn fillBuffer(data: *const cmd.CommandFillBuffer) VkError!void {
     const memory = if (data.buffer.memory) |memory| memory else return VkError.ValidationFailed;
     var memory_map: []u32 = @as([*]u32, @ptrCast(@alignCast(try memory.map(data.offset, data.size))))[0..data.size];
 
-    for (0..@divExact(data.size, @sizeOf(u32))) |i| {
+    var bytes = if (data.size == vk.WHOLE_SIZE) memory.size - data.offset else data.size;
+
+    var i: usize = 0;
+    while (bytes >= 4) : ({
+        bytes -= 4;
+        i += 1;
+    }) {
         memory_map[i] = data.data;
     }