cleanup and refactoring

raytracer/nvpro_core/nvvkhl/shaders/sky.comp

@@ -0,0 +1,53 @@
+/*
+ * 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
+ */
+
+#version 450
+#extension GL_GOOGLE_include_directive : enable
+#extension GL_EXT_shader_explicit_arithmetic_types_int8 : enable
+#extension GL_EXT_shader_explicit_arithmetic_types_int16 : enable
+#extension GL_EXT_shader_explicit_arithmetic_types_int64 : require
+
+#include "dh_sky.h"
+
+layout(local_size_x = WORKGROUP_SIZE, local_size_y = WORKGROUP_SIZE, local_size_z = 1) in;
+
+layout(set = 0, binding = eSkyOutImage) writeonly uniform image2D g_out_hdr;
+layout(set = 0, binding = eSkyParam) uniform SkyInfo_
+{
+  ProceduralSkyShaderParameters skyInfo;
+};
+
+
+layout(push_constant) uniform SkyDomePushConstant_
+{
+  SkyPushConstant pc;
+};
+
+
+void main()
+{
+  const vec2 pixel_center = vec2(gl_GlobalInvocationID.xy) + vec2(0.5F);
+  const vec2 in_uv        = pixel_center / vec2(imageSize(g_out_hdr));
+  const vec2 d            = in_uv * 2.0 - 1.0;
+  vec3       direction    = normalize(vec3(pc.mvp * vec4(d.x, d.y, 1.0F, 1.0F)));
+
+  vec3 color = proceduralSky(skyInfo, direction, 0.0F);
+
+  imageStore(g_out_hdr, ivec2(gl_GlobalInvocationID.xy), vec4(color, 1.0F));
+}