15:30 <cphealy> Hi Lucas

15:31 <cphealy> I'm curious if you can answer the following question: For NV12, as I recall, Vivante GPUs perform color space conversion using a shader inside Mesa. Is this correct? If so, can you point me to it?

15:32 <cphealy> I ask as I'm trying to learn more about this functionality as I want to see if I can do inline detiling with Mediatek tiled video buffers. The tiling format has been learned and standalone GL code has been written to convert a tiled input buffer to a linear output buffer. I want to see if it's possible to integrate this into mesa for "inline" detiling.

15:34 <lynxeye> cphealy: shader replacement for NV12 external textures happens in the frontend. Function to search for is lower_yuv_external. The driver doesn't get to see the original input.

15:36 <cphealy> cool, tnx