// Decreases refcount and deallocates when it reaches 0.
public void Release(TextureId id)
{
if (id.index < 0 || id.index >= m_Textures.Count)
{
Debug.LogError($"Attempted to release an invalid texture (index={id.index}).");
return;
}
TextureInfo info = m_Textures[id.index];
if (info.refCount < 1)
{
Debug.LogError($"Attempted to release a texture (index={id.index}) that is not allocated.");
return;
}
--info.refCount;
if (info.refCount == 0)
{
if (!info.dynamic)
{
m_TextureToId.Remove(info.texture);
}
info.texture = null;
info.dynamic = false;
m_FreeIds.Push(id);
}
m_Textures[id.index] = info;
}
TextureId AllocAndAcquire(Texture texture, bool dynamic)
{
TextureId id;
TextureInfo info = new TextureInfo
{
texture = texture,
dynamic = dynamic,
refCount = 1
};
if (m_FreeIds.Count > 0)
{
id = m_FreeIds.Pop();
m_Textures[id.index] = info;
}
else
{
if (m_Textures.Count == maxTextures)
{
Debug.LogError($"Failed to allocate a {nameof(TextureId)} because the limit of {maxTextures} textures is reached.");
return(TextureId.invalid);
}
id = new TextureId(m_Textures.Count);
m_Textures.Add(info);
}
if (!dynamic)
{
m_TextureToId[texture] = id;
}
return(id);
}
public void UpdateDynamic(TextureId id, Texture texture)
{
if (id.index < 0 || id.index >= m_Textures.Count)
{
Debug.LogError($"Attempted to update an invalid dynamic texture (index={id.index}).");
return;
}
TextureInfo info = m_Textures[id.index];
if (!info.dynamic)
{
Debug.LogError($"Attempted to update a texture (index={id.index}) that is not dynamic.");
return;
}
if (info.refCount < 1)
{
Debug.LogError($"Attempted to update a dynamic texture (index={id.index}) that is not allocated.");
return;
}
info.texture = texture;
m_Textures[id.index] = info;
}
public override bool TryGetAtlas(VisualElement ve, Texture2D src, out TextureId atlas, out RectInt atlasRect)
{
if (m_Panels.Count == 0 || src == null)
{
atlas = TextureId.invalid;
atlasRect = new RectInt();
return(false);
}
if (!isInitialized)
{
InitPages();
}
if (m_Database.TryGetValue(src, out TextureInfo info))
{
atlas = info.page.textureId;
atlasRect = info.rect;
++info.counter;
return(true);
}
// For the time being, we don't have a trilinear page. If users keep the filterMode check enabled, a
// mip-mapped texture will NOT enter any of our pages. However, if they disable this check, we should try
// to put it in the bilinear atlas first, because it will provide some interpolation, unlike the Point page.
Allocator2D.Alloc2D alloc;
if (IsTextureValid(src, FilterMode.Bilinear) && m_BilinearPage.TryAdd(src, out alloc, out atlasRect))
{
info = TextureInfo.pool.Get();
info.alloc = alloc;
info.counter = 1;
info.page = m_BilinearPage;
info.rect = atlasRect;
m_Database[src] = info;
atlas = m_BilinearPage.textureId;
return(true);
}
if (IsTextureValid(src, FilterMode.Point) && m_PointPage.TryAdd(src, out alloc, out atlasRect))
{
info = TextureInfo.pool.Get();
info.alloc = alloc;
info.counter = 1;
info.page = m_PointPage;
info.rect = atlasRect;
m_Database[src] = info;
atlas = m_PointPage.textureId;
return(true);
}
atlas = TextureId.invalid;
atlasRect = new RectInt();
return(false);
}
public override void ReturnAtlas(VisualElement ve, Texture2D src, TextureId atlas)
{
if (m_Database.TryGetValue(src, out TextureInfo info))
{
--info.counter;
if (info.counter == 0)
{
info.page.Remove(info.alloc);
m_Database.Remove(src);
TextureInfo.pool.Return(info);
}
}
}
public Texture GetTexture(TextureId id)
{
if (id.index < 0 || id.index >= m_Textures.Count)
{
Debug.LogError($"Attempted to get an invalid texture (index={id.index}).");
return(null);
}
TextureInfo info = m_Textures[id.index];
if (info.refCount < 1)
{
Debug.LogError($"Attempted to get a texture (index={id.index}) that is not allocated.");
return(null);
}
return(info.texture);
}
// Increases refcount
public void Acquire(TextureId id)
{
if (id.index < 0 || id.index >= m_Textures.Count)
{
Debug.LogError($"Attempted to acquire an invalid texture (index={id.index}).");
return;
}
TextureInfo info = m_Textures[id.index];
if (info.refCount < 1)
{
Debug.LogError($"Attempted to acquire a texture (index={id.index}) that is not allocated.");
return;
}
++info.refCount;
m_Textures[id.index] = info;
}
public bool Equals(TextureId other)
{
return(m_Index == other.m_Index);
}
public virtual bool TryGetAtlas(VisualElement ctx, Texture2D src, out TextureId atlas, out RectInt atlasRect)
{
atlas = TextureId.invalid;
atlasRect = new RectInt();
return(false);
}
protected void SetDynamicTexture(TextureId id, Texture texture)
{
textureRegistry.UpdateDynamic(id, texture);
}
protected void FreeDynamicTexture(TextureId id)
{
textureRegistry.Release(id);
}
public virtual void ReturnAtlas(VisualElement ctx, Texture2D src, TextureId atlas)
{
}