1 files changed, 78 insertions, 0 deletions
diff --git a/thirdparty/amd-fsr2/ffx_util.h b/thirdparty/amd-fsr2/ffx_util.h
new file mode 100644
index 0000000000..ca4324ea83
--- /dev/null
+++ b/thirdparty/amd-fsr2/ffx_util.h
@@ -0,0 +1,78 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (c) 2022-2023 Advanced Micro Devices, Inc. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#pragma once
+
+#include "ffx_types.h"
+
+/// The value of Pi.
+const float FFX_PI = 3.141592653589793f;
+
+/// An epsilon value for floating point numbers.
+const float FFX_EPSILON = 1e-06f;
+
+/// Helper macro to create the version number.
+#define FFX_MAKE_VERSION(major, minor, patch) ((major << 22) | (minor << 12) | patch)
+
+///< Use this to specify no version.
+#define FFX_UNSPECIFIED_VERSION     0xFFFFAD00
+
+/// Helper macro to avoid warnings about unused variables.
+#define FFX_UNUSED(x)               ((void)(x))
+
+/// Helper macro to align an integer to the specified power of 2 boundary
+#define FFX_ALIGN_UP(x, y)          (((x) + ((y)-1)) & ~((y)-1))
+
+/// Helper macro to check if a value is aligned.
+#define FFX_IS_ALIGNED(x)           (((x) != 0) && ((x) & ((x)-1)))
+
+/// Helper macro to stringify a value.
+#define FFX_STR(s)                  FFX_XSTR(s)
+#define FFX_XSTR(s)                 #s
+
+/// Helper macro to forward declare a structure.
+#define FFX_FORWARD_DECLARE(x)      typedef struct x x
+
+/// Helper macro to return the maximum of two values.
+#define FFX_MAXIMUM(x, y)           (((x) > (y)) ? (x) : (y))
+
+/// Helper macro to return the minimum of two values.
+#define FFX_MINIMUM(x, y)           (((x) < (y)) ? (x) : (y))
+
+/// Helper macro to do safe free on a pointer.
+#define FFX_SAFE_FREE(x) \
+    if (x)               \
+    free(x)
+
+/// Helper macro to return the abs of an integer value.
+#define FFX_ABSOLUTE(x)                 (((x) < 0) ? (-(x)) : (x))
+
+/// Helper macro to return sign of a value.
+#define FFX_SIGN(x)                     (((x) < 0) ? -1 : 1)
+
+/// Helper macro to work out the number of elements in an array.
+#define FFX_ARRAY_ELEMENTS(x)           (int32_t)((sizeof(x) / sizeof(0 [x])) / ((size_t)(!(sizeof(x) % sizeof(0 [x])))))
+
+/// The maximum length of a path that can be specified to the FidelityFX API.
+#define FFX_MAXIMUM_PATH                (260)
+
+/// Helper macro to check if the specified key is set in a bitfield.
+#define FFX_CONTAINS_FLAG(options, key) ((options & key) == key)