By the way, there are a number of these derived system values...
instead of creating lowering for all of them, have you considered just
starting out *every* CS with the instructions to compute them and then
not having any lowering at all? The dead code elim should take care of
removing any that are
Why doesn't the lowering pass do that? Do you need to call it earlier?
Or does it rely on some information that only becomes available later?
On Thu, Aug 6, 2015 at 2:01 PM, Jordan Justen wrote:
> gl_GlobalInvocationID =
> gl_WorkGroupID * gl_WorkGroupSize + gl_LocalInvocationID
>
> Therefore,
gl_GlobalInvocationID =
gl_WorkGroupID * gl_WorkGroupSize + gl_LocalInvocationID
Therefore, if gl_GlobalInvocationID is used, then we mark these other
variables as being used. This prevents them from being considered dead
variables and being removed.
Signed-off-by: Jordan Justen
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src/glsl/
