public virtual bool AllocateTextureWithoutBlit(int instanceId, int width, int height, ref Vector4 scaleOffset)
{
scaleOffset = Vector4.zero;
if (m_AtlasAllocator.Allocate(ref scaleOffset, width, height))
{
scaleOffset.Scale(new Vector4(1.0f / m_Width, 1.0f / m_Height, 1.0f / m_Width, 1.0f / m_Height));
m_AllocationCache.Add(instanceId, scaleOffset);
MarkGPUTextureInvalid(instanceId); // the texture data haven't been uploaded
return(true);
}
else
{
return(false);
}
}
public bool AddTexture(CommandBuffer cmd, ref Vector4 scaleBias, Texture texture)
{
int key = texture.GetInstanceID();
if (!m_AllocationCache.TryGetValue(key, out scaleBias))
{
int width = texture.width;
int height = texture.height;
if (m_AtlasAllocator.Allocate(ref scaleBias, width, height))
{
scaleBias.Scale(new Vector4(1.0f / m_Width, 1.0f / m_Height, 1.0f / m_Width, 1.0f / m_Height));
for (int mipLevel = 0; mipLevel < (texture as Texture2D).mipmapCount; mipLevel++)
{
cmd.SetRenderTarget(m_AtlasTexture, mipLevel);
HDUtils.BlitQuad(cmd, texture, new Vector4(1, 1, 0, 0), scaleBias, mipLevel, false);
}
m_AllocationCache.Add(key, scaleBias);
return(true);
}
else
{
return(false);
}
}
return(true);
}