64 lines
1.9 KiB
HLSL
64 lines
1.9 KiB
HLSL
/* Copyright (c) 2024, Sascha Willems
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*
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* SPDX-License-Identifier: Apache-2.0
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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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Texture2D textureEnvMap : register(t1);
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SamplerState samplerEnvMap : register(s1);
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struct VSOutput
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{
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float4 Pos : SV_POSITION;
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[[vk::location(0)]] float2 UV : TEXCOORD0;
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[[vk::location(1)]] float3 Normal : NORMAL0;
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[[vk::location(2)]] float3 ViewVec : TEXCOORD1;
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[[vk::location(3)]] float3 LightVec : TEXCOORD2;
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};
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struct PushConstants
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{
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float4 offset;
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float4 color;
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int object_type;
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};
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[[vk::push_constant]] PushConstants push_constants;
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float4 main(VSOutput input) : SV_TARGET
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{
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float4 color;
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switch (push_constants.object_type) {
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case 0: // Skysphere
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{
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color = textureEnvMap.Sample(samplerEnvMap, float2(input.UV.x, 1.0 - input.UV.y));
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}
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break;
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case 1: // Phong shaded objects
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{
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float3 ambient = push_constants.color.rgb * (0.5).xxx;
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float3 N = normalize(input.Normal);
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float3 L = normalize(input.LightVec);
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float3 V = normalize(input.ViewVec);
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float3 R = reflect(-L, N);
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float3 diffuse = max(dot(N, L), 0.0) * push_constants.color.rgb;
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float3 specular = (pow(max(dot(R, V), 0.0), 8.0)).xxx;
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color = float4(ambient + diffuse + specular, 1.0);
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}
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break;
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}
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return float4(color.rgb, 1.0);
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} |