cleanup and refactoring

raytracer/nvpro_core/nvvkhl/shaders/constants.glsl

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2014-2022 NVIDIA CORPORATION
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+#ifndef CONSTANTS_GLSL
+#define CONSTANTS_GLSL
+
+
+precision highp float;
+
+const float M_PI        = 3.1415926535897F;  // PI
+const float M_TWO_PI    = 6.2831853071795F;  // 2*PI
+const float M_PI_2      = 1.5707963267948F;  // PI/2
+const float M_PI_4      = 0.7853981633974F;  // PI/4
+const float M_1_OVER_PI = 0.3183098861837F;  // 1/PI
+const float M_2_OVER_PI = 0.6366197723675F;  // 2/PI
+
+const float INFINITE = 1e32F;
+
+#endif  // CONSTANTS_GLSL