Timur Kristóf
f1dd81ae10
The following new fields are added to tess shader info: * `tcs_cross_invocation_inputs_read` * `tcs_cross_invocation_outputs_read` These are I/O masks that are a subset of inputs_read and outputs_read and they contain which per-vertex inputs and outputs are read cross-invocation. Additionall, the following new fields are added to shader_info: * `inputs_read_indirectly` * `outputs_accessed_indirectly` * `patch_inputs_read_indirectly` * `patch_outputs_accessed_indirectly` These new fields can be used for optimizing TCS in a back-end compiler. If you can be sure that the TCS doesn't use cross-invocation inputs or outputs, you can choose a different strategy for storing VS and TCS outputs. However, such optimizations might need to be disabled when the inputs/outputs are accessed indirectly due to backend limitations, so this information is also collected. Example: RADV currently has to store all VS and TCS outputs in LDS, but for shaders when only inputs and/or outputs belonging to the current invocation ID are used, it could skip storing these in LDS entirely. Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Rhys Perry <pendingchaos02@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4165>
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