D1129: DXGI Format Incompatible With Alpha Mode
The combination of alpha mode and DXGI format supplied are not compatible with one another.
Possible Causes
For Direct2D operations which use a surface format and alpha mode, there are cases in which the surface format and the alpha mode do not agree. For example, a surface format such as DXGI_FORMAT_A8_UNORM would not make sense to be used with IGNORE alpha, since it renders only to an alpha channel. Additionally, straight alpha is not supported with some DXGI_FORMATs, but premultiplied alpha is.
Possible Fixes
See Supported Pixel Formats and Alpha Modes for guidance concerning which format combinations are supported and which are not. Modify the application to use a supported format combination.
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