On 12/06/2014 07:50 AM, Matt Turner wrote:
On Fri, Dec 5, 2014 at 8:13 PM, Vadim Girlin <vadimgir...@gmail.com> wrote:
I suspect we should rather get rid of such loops somehow, i.e. convert to
something else, the loop that never repeats is not really a loop anyway.
AFAICS "continue" is not supported in switch statements according to GLSL
specs, so the loops generated for switch will never be repeated. Am I
missing something? Even if repeating is possible somehow, at least we can
get rid of the loops that are not repeated.
I don't think that's true. I don't see anything in the spec that would
lead me to believe continue cannot occur in a switch statement.
I've double-checked some versions of GLSL spec (1.30, 1.50, 3.30, 4.40)
and all of them say the same (section "6.4 Jumps"):
"The continue jump is used only in loops."
In fact, we have some relatively complicated shaders that have a
continue in a switch. See
tests/shaders/glsl-fs-continue-in-switch-in-do-while.shader_test
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
