DDS files that specify DDS_PITCH load more reliably #81

TheFlipbook · 2019-06-17T01:58:44Z

Some files define Pitch instead of LinearSize
The files sometimes also have RGBBitCount
However, many do not, such as those in the NVTT test suite
-- https://github.com/castano/nvidia-texture-tools/blob/master/data/testsuite/lightmap/cottage.dds
In other cases, DX10 formats more fully specify the data.
In cases where we have no better path, use dwPitchOrLinearSize as pitch
-- Microsoft recommends recomputing pitch instead
-- https://docs.microsoft.com/en-us/windows/desktop/direct3ddds/dx-graphics-dds-pguide
-- However, had no convenient way to select correct method

- Some files define Pitch instead of LinearSize - The files sometimes also have RGBBitCount - However, many do not, such as those in the NVTT test suite -- https://github.com/castano/nvidia-texture-tools/blob/master/data/testsuite/lightmap/cottage.dds - In other cases, DX10 formats more fully specify the data. - In cases where we have no better path, use dwPitchOrLinearSize as pitch -- Microsoft recommends recomputing pitch instead -- https://docs.microsoft.com/en-us/windows/desktop/direct3ddds/dx-graphics-dds-pguide -- However, had no convenient way to select correct method

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