Change #248062

Comments

vulkan/prores: forward quantization parameter to the IDCT shader
The qScale syntax element has a maximum value of 512, which would overflow the 16-bit store from the VLD shader in extreme cases.
This fixes that edge case by forwarding the element in a storage buffer, and applying the inverse quantization fully in the IDCT shader.

Changed files

• libavcodec/vulkan/prores_idct.comp
• libavcodec/vulkan/prores_vld.comp
• libavcodec/vulkan_prores.c