private bool IsTextureValid(Texture2D image)
{
bool isReadable = image.isReadable;
bool result;
if (isReadable)
{
result = false;
}
else
{
bool flag = image.width > this.maxImageSize || image.height > this.maxImageSize;
if (flag)
{
result = false;
}
else
{
bool flag2 = !UIRAtlasManager.IsTextureFormatSupported(image.format);
if (flag2)
{
result = false;
}
else
{
bool flag3 = !this.m_FloatFormat && this.m_ColorSpace == ColorSpace.Linear && image.activeTextureColorSpace > ColorSpace.Gamma;
if (flag3)
{
result = false;
}
else
{
bool flag4 = SystemInfo.graphicsShaderLevel >= 35;
if (flag4)
{
bool flag5 = image.filterMode != FilterMode.Bilinear && image.filterMode > FilterMode.Point;
if (flag5)
{
result = false;
return(result);
}
}
else
{
bool flag6 = this.m_FilterMode != image.filterMode;
if (flag6)
{
result = false;
return(result);
}
}
bool flag7 = image.wrapMode != TextureWrapMode.Clamp;
result = !flag7;
}
}
}
}
return(result);
}
public bool TryGetLocation(Texture2D image, out RectInt uvs)
{
uvs = default(RectInt);
bool disposed = this.disposed;
bool result;
if (disposed)
{
UIRAtlasManager.LogDisposeError();
result = false;
}
else
{
bool flag = image == null;
if (flag)
{
result = false;
}
else
{
bool flag2 = this.m_UVs.TryGetValue(image, out uvs);
if (flag2)
{
result = true;
}
else
{
bool flag3 = !this.IsTextureValid(image);
if (flag3)
{
result = false;
}
else
{
bool flag4 = !this.AllocateRect(image.width, image.height, out uvs);
if (flag4)
{
result = false;
}
else
{
this.m_UVs[image] = uvs;
this.m_Blitter.QueueBlit(image, new RectInt(0, 0, image.width, image.height), new Vector2Int(uvs.x, uvs.y), true, Color.white);
result = true;
}
}
}
}
}
return(result);
}
public void Reset()
{
bool disposed = this.disposed;
if (disposed)
{
UIRAtlasManager.LogDisposeError();
}
else
{
UIRAtlasManager.s_MarkerReset.Begin();
this.m_Blitter.Reset();
this.m_UVs.Clear();
this.m_Allocator = new UIRAtlasAllocator(this.m_InitialSize, 4096, this.m_1SidePadding);
this.m_ForceReblitAll = false;
this.m_ColorSpace = QualitySettings.activeColorSpace;
UIRUtility.Destroy(this.atlas);
this.atlas = null;
UIRAtlasManager.s_MarkerReset.End();
this.m_ResetVersion = UIRAtlasManager.s_GlobalResetVersion;
}
}
public void Commit()
{
bool disposed = this.disposed;
if (disposed)
{
UIRAtlasManager.LogDisposeError();
}
else
{
this.UpdateAtlasTexture();
bool forceReblitAll = this.m_ForceReblitAll;
if (forceReblitAll)
{
this.m_ForceReblitAll = false;
this.m_Blitter.Reset();
foreach (KeyValuePair <Texture2D, RectInt> current in this.m_UVs)
{
this.m_Blitter.QueueBlit(current.Key, new RectInt(0, 0, current.Key.width, current.Key.height), new Vector2Int(current.Value.x, current.Value.y), true, Color.white);
}
}
this.m_Blitter.Commit(this.atlas);
}
}
public Allocation Allocate(UIRAtlasManager atlasManager)
{
if (atlasManager == null)
{
return new Allocation()
{
line = -1
}
}
; // Not possible
int linesAvailable = m_AllocMap.Count;
for (int i = 0; i < linesAvailable; i++)
{
var allocBits = m_AllocMap[i];
if (allocBits == 0)
{
continue;
}
byte allocIndex = CountTrailingZeroes(allocBits);
m_AllocMap[i] = allocBits & (~(1U << allocIndex));
int pageIndex = i / kPageHeight;
var pageInfo = m_Pages[pageIndex];
return(new Allocation()
{
line = i, bitIndex = allocIndex, x = (UInt16)(allocIndex + pageInfo.x), y = (UInt16)(i - pageIndex * kPageHeight + pageInfo.y), owned = 1
});
}
RectInt uvRect;
if (!atlasManager.AllocateRect(kPageWidth, kPageHeight, out uvRect))
{
return new Allocation()
{
line = -1
}
}
; // Failed
var alloc = new Allocation()
{
line = m_AllocMap.Count, bitIndex = 0, x = 0, y = 0, owned = 1
};
m_AllocMap.Capacity += kPageHeight;
m_AllocMap.Add(0xFFFFFFFE); // Reserve first slot
for (int i = 1; i < kPageHeight; i++)
{
m_AllocMap.Add(0xFFFFFFFF);
}
var newPage = new Page();
newPage.x = (UInt16)uvRect.xMin;
newPage.y = (UInt16)uvRect.yMin;
m_Pages.Add(newPage);
alloc.x += newPage.x;
alloc.y += newPage.y;
return(alloc);
}