LibGL+LibGPU+LibSoftGPU: Move ImageFormat.h to LibGPU

Author: https://github.com/sunverwerth
Commit: 4e0643ae97
Pull-request: https://github.com/SerenityOS/serenity/pull/13294
Reviewed-by: https://github.com/Quaker762 ✅
Reviewed-by: https://github.com/creator1creeper1
Reviewed-by: https://github.com/gmta

Userland/Libraries/LibGPU/ImageFormat.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Types.h>
+
+namespace GPU {
+
+enum class ImageFormat {
+    RGB565,
+    RGB888,
+    BGR888,
+    RGBA8888,
+    BGRA8888,
+    L8,
+    L8A8,
+};
+
+static constexpr size_t element_size(ImageFormat format)
+{
+    switch (format) {
+    case ImageFormat::L8:
+        return 1;
+    case ImageFormat::RGB565:
+    case ImageFormat::L8A8:
+        return 2;
+    case ImageFormat::RGB888:
+    case ImageFormat::BGR888:
+        return 3;
+    case ImageFormat::RGBA8888:
+    case ImageFormat::BGRA8888:
+        return 4;
+    default:
+        VERIFY_NOT_REACHED();
+    }
+}
+
+}