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o3de/Gems/Atom/Feature/Common/Assets/Shaders/ImGui/ImGui.azsl

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/*
* Copyright (c) Contributors to the Open 3D Engine Project.
* For complete copyright and license terms please see the LICENSE at the root of this distribution.
*
* SPDX-License-Identifier: Apache-2.0 OR MIT
*
*/
#include <Atom/Features/SrgSemantics.azsli>
struct VertexInput
{
float2 Position : POSITION;
float2 UV : UV;
float4 Color : COLOR;
};
struct VertexOutput
{
float4 Position : SV_Position;
float4 Color : COLOR;
float2 UV : UV;
};
ShaderResourceGroup ObjectSrg : SRG_PerObject
{
Texture2D<float4> FontImage;
Sampler LinearSampler
{
MinFilter = Linear;
MagFilter = Linear;
MipFilter = Linear;
AddressU = Clamp;
AddressV = Clamp;
AddressW = Clamp;
};
column_major float4x4 m_projectionMatrix;
}
VertexOutput MainVS(in VertexInput input)
{
VertexOutput output;
output.Position = mul(float4(input.Position, 0.0f, 1.0f), ObjectSrg::m_projectionMatrix);
output.Color = float4(input.Color.rgb, input.Color.a);
output.UV = input.UV;
return output;
}
struct PixelOutput
{
float4 m_color : SV_Target0;
};
PixelOutput MainPS(in VertexOutput input)
{
PixelOutput output;
float4 color = ObjectSrg::FontImage.Sample(ObjectSrg::LinearSampler, input.UV) * input.Color;
output.m_color = float4(color.rgb * color.a, color.a);
return output;
}