/// <summary>
/// Remove an existing material, automatically cleaning it up if it's no longer in use.
/// </summary>
public static void Remove(Material customMat, UIMask mask)
{
if (customMat == null)
{
return;
}
for (int i = 0; i < m_List.Count; ++i)
{
MatEntry ent = m_List[i];
if (ent.mask != mask || ent.customMat != customMat)
{
continue;
}
if (--ent.count == 0)
{
// Misc.DestroyImmediate(ent.customMat);
ent.baseMat = null;
m_List.RemoveAt(i);
}
return;
}
}
/// <summary>
/// Add a new material using the specified base
/// </summary>
public static Material Add(Material baseMat, UIMask mask)
{
if (baseMat == null)
{
return(null);
}
MatEntry ret = null;
for (int i = 0; i < m_List.Count; ++i)
{
MatEntry ent = m_List[i];
if (ent.mask == mask && ent.baseMat == baseMat)
{
++ent.count;
ret = ent;
break;
}
}
if (ret == null)
{
ret = new MatEntry();
ret.count = 1;
ret.mask = mask;
ret.baseMat = baseMat;
ret.customMat = new Material(baseMat);
ret.customMat.name = "Mask Material";
string newShaderName = ret.customMat.shader.name + "(TextureClip)";
if (ShaderFinder == null)
{
ret.customMat.shader = Shader.Find(newShaderName);
}
else
{
ret.customMat.shader = ShaderFinder(newShaderName);
}
if (!ret.customMat.HasProperty("_ClipTex"))
{
Debug.LogWarning("Shader " + newShaderName + " doesn't have _ClipTex properties");
}
if (!ret.customMat.HasProperty("_ClipRange"))
{
Debug.LogWarning("Shader " + newShaderName + " doesn't have _ClipRange properties");
}
ret.customMat.renderQueue = baseMat.renderQueue;
ret.customMat.hideFlags = HideFlags.HideAndDontSave;
m_List.Add(ret);
}
Update(ret);
return(ret.customMat);
}
public static void Update(UIMask mask)
{
for (int i = 0; i < m_List.Count; ++i)
{
MatEntry ret = m_List[i];
if (ret.mask != mask)
{
continue;
}
Update(ret);
}
}
private static void Update(MatEntry ret)
{
UIMask mask = ret.mask;
RectTransform tranRect = mask.rectTransform;
Vector4 clipRange = new Vector4(0, 0, 1, 1);
if (tranRect != null)
{
var rect = tranRect.rect;
float halfWidth = rect.width / 2f;
float halfHeight = rect.height / 2f;
clipRange.x = -rect.center.x / halfWidth;
clipRange.y = -rect.center.y / halfHeight;
clipRange.z = 1f / halfWidth;
clipRange.w = 1f / halfHeight;
}
ret.customMat.SetTexture("_ClipTex", mask.texture);
ret.customMat.SetVector("_ClipRange", clipRange);
ret.customMat.SetMatrix("_WorldToClipLocal", tranRect.worldToLocalMatrix);
}
