cleanup and refactoring

raytracer/ray_tracing_gltf/shaders/vert_shader.vert

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2019-2021, 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) 2019-2021 NVIDIA CORPORATION
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+#extension GL_EXT_scalar_block_layout : enable
+#extension GL_GOOGLE_include_directive : enable
+#extension GL_EXT_shader_explicit_arithmetic_types_int64 : require
+
+#include "gltf.glsl"
+#include "host_device.h"
+
+layout(binding = 0) uniform _GlobalUniforms
+{
+  GlobalUniforms uni;
+};
+
+layout(push_constant) uniform _PushConstantRaster
+{
+  PushConstantRaster pcRaster;
+};
+
+layout(location = 0) in vec3 i_position;
+layout(location = 1) in vec3 i_normal;
+layout(location = 2) in vec2 i_texCoord;
+
+
+layout(location = 1) out vec3 o_worldPos;
+layout(location = 2) out vec3 o_worldNrm;
+layout(location = 3) out vec3 o_viewDir;
+layout(location = 4) out vec2 o_texCoord;
+
+out gl_PerVertex
+{
+  vec4 gl_Position;
+};
+
+
+void main()
+{
+  vec3 origin = vec3(uni.viewInverse * vec4(0, 0, 0, 1));
+
+  o_worldPos = vec3(pcRaster.modelMatrix * vec4(i_position, 1.0));
+  o_viewDir  = vec3(o_worldPos - origin);
+  o_texCoord = i_texCoord;
+  o_worldNrm = mat3(pcRaster.modelMatrix) * i_normal;
+
+  gl_Position = uni.viewProj * vec4(o_worldPos, 1.0);
+}