65 lines
No EOL
1.9 KiB
Text
65 lines
No EOL
1.9 KiB
Text
/*
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* Copyright (c) 2019-2021, NVIDIA CORPORATION. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* SPDX-FileCopyrightText: Copyright (c) 2019-2021 NVIDIA CORPORATION
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* SPDX-License-Identifier: Apache-2.0
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*/
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#version 460
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#extension GL_ARB_separate_shader_objects : enable
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#extension GL_EXT_scalar_block_layout : enable
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#extension GL_GOOGLE_include_directive : enable
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#extension GL_EXT_shader_explicit_arithmetic_types_int64 : require
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#include "wavefront.glsl"
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layout(binding = 0, scalar) buffer Vertices_
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{
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Vertex v[];
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}
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vertices;
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layout(push_constant) uniform shaderInformation
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{
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float iTime;
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}
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pushc;
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void main()
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{
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Vertex v0 = vertices.v[gl_GlobalInvocationID.x];
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// Compute vertex position
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const float PI = 3.14159265;
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const float signY = (v0.pos.y >= 0 ? 1 : -1);
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const float radius = length(v0.pos.xz);
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const float argument = pushc.iTime * 4 + radius * PI;
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const float s = sin(argument);
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v0.pos.y = signY * abs(s) * 0.5;
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// Compute normal
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if(radius == 0.0f)
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{
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v0.nrm = vec3(0.0f, signY, 0.0f);
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}
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else
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{
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const float c = cos(argument);
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const float xzFactor = -PI * s * c;
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const float yFactor = 2.0f * signY * radius * abs(s);
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v0.nrm = normalize(vec3(v0.pos.x * xzFactor, yFactor, v0.pos.z * xzFactor));
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}
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vertices.v[gl_GlobalInvocationID.x] = v0;
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} |