83 lines
2.4 KiB
HLSL
83 lines
2.4 KiB
HLSL
/* Copyright (c) 2024-2025, 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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// printf requires this extension
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struct VSInput
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{
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[[vk::location(0)]] float3 Pos : POSITION0;
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[[vk::location(1)]] float3 Normal : NORMAL0;
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[[vk::location(2)]] float2 UV : TEXCOORD0;
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uint VertexIndex : SV_VertexID;
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};
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struct UBO
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{
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float4x4 projection;
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float4x4 modelview;
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float4x4 skybox_modelview;
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float modelscale;
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};
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[[vk::binding(0, 0)]]
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ConstantBuffer<UBO> ubo : register(b0);
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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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VSOutput main(VSInput input)
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{
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VSOutput output = (VSOutput) 0;
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float3 tmpPos;
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switch(push_constants.object_type) {
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case 0: // Skysphere
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tmpPos = mul((float3x3) ubo.skybox_modelview, input.Pos.xyz);
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output.Pos = mul(ubo.projection, float4(tmpPos, 1.0));
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break;
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case 1: // Object
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float3 localPos = input.Pos * ubo.modelscale + push_constants.offset.xyz;
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tmpPos = mul(ubo.modelview, float4(localPos, 1.0)).xyz;
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output.Pos = mul(ubo.projection, mul(ubo.modelview, float4(localPos, 1.0)));
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break;
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}
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output.UV = input.UV;
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output.Normal = mul((float3x3) ubo.modelview, input.Normal);
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float3 lightPos = mul((float3x3) ubo.modelview, float3(0.0, -10.0, -10.0));
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output.LightVec = lightPos.xyz - tmpPos.xyz;
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output.ViewVec = -tmpPos.xyz;
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// Output the vertex position using debug printf
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if (input.VertexIndex == 0) {
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printf("Position = %v3f", output.Pos);
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}
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return output;
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}
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