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SoftMaskForUGUI
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Add the parameter to control mask transparency

pull/87/head
iizzaya 2019-10-14 23:50:51 +08:00
parent 62ac172783
commit 0efcdfb78f
2 changed files with 24 additions and 1 deletions
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22
Scripts/SoftMask.cs
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@ -53,6 +53,8 @@ namespace Coffee.UIExtensions
[SerializeField] DesamplingRate m_DesamplingRate = DesamplingRate.None;
[Tooltip("The value used by the soft mask to select the area of influence defined over the soft mask's graphic.")]
[SerializeField][Range(0.01f, 1)] float m_Softness = 1;
[Tooltip("The transparency of the whole masked graphic.")]
[SerializeField][Range(0f, 1f)] float m_Alpha = 1;
[Tooltip("Should the soft mask ignore parent soft masks?")]
[SerializeField] bool m_IgnoreParent = false;
[Tooltip("Is the soft mask a part of parent soft mask?")]
@ -94,6 +96,23 @@ namespace Coffee.UIExtensions
}
}
}
/// <summary>
/// The transparency of the whole masked graphic.
/// </summary>
public float alpha
{
get { return m_Alpha; }
set
{
value = Mathf.Clamp01(value);
if (m_Alpha != value)
{
m_Alpha = value;
hasChanged = true;
}
}
}
/// <summary>
/// Should the soft mask ignore parent soft masks?
@ -271,6 +290,7 @@ namespace Coffee.UIExtensions
s_ColorMaskId = Shader.PropertyToID("_ColorMask");
s_MainTexId = Shader.PropertyToID("_MainTex");
s_SoftnessId = Shader.PropertyToID("_Softness");
s_Alpha = Shader.PropertyToID("_Alpha");
}
}
s_ActiveSoftMasks.Add(this);
@ -378,6 +398,7 @@ namespace Coffee.UIExtensions
static int s_ColorMaskId;
static int s_MainTexId;
static int s_SoftnessId;
static int s_Alpha;
MaterialPropertyBlock _mpb;
CommandBuffer _cb;
Material _material;
@ -539,6 +560,7 @@ namespace Coffee.UIExtensions
sm.material.SetInt(s_ColorMaskId, (int)1 << (3 - _stencilDepth - i));
sm._mpb.SetTexture(s_MainTexId, sm.graphic.mainTexture);
sm._mpb.SetFloat(s_SoftnessId, sm.m_Softness);
sm._mpb.SetFloat(s_Alpha, sm.m_Alpha);
// Draw mesh.
_cb.DrawMesh(sm.mesh, sm.transform.localToWorldMatrix, sm.material, 0, 0, sm._mpb);

3
Shaders/Resources/SoftMask.shader
View File

@ -19,10 +19,11 @@ SubShader {
sampler2D _MainTex;
float _Softness;
float _Alpha;
fixed4 frag (v2f_img i) : SV_Target
{
return saturate(tex2D(_MainTex, i.uv).a/_Softness);
return saturate(tex2D(_MainTex, i.uv).a/_Softness) * _Alpha;
}
ENDCG
}