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authorJordan Justen <[email protected]>2016-02-15 15:17:15 -0800
committerJordan Justen <[email protected]>2016-02-17 09:25:47 -0800
commit9a939ebb47a0d37a6b29e3dbb1b20bdc9538a721 (patch)
tree3a26bd80e619a60100ad7a2b763cb2edf08f8a70 /appveyor.yml
parent37d540ba709ae0128a6fb3e11a7124eb6e8c00a0 (diff)
i965/gen7: Use predicated rendering for indirect compute
On gen7 (Ivy Bridge, Haswell), we will get a GPU hang if an indirect dispatch is used, but one of the dimensions is 0. Therefore we use predicated rendering on the GPGPU_WALKER command to handle this case. Fixes piglit test: spec/arb_compute_shader/zero-dispatch-size From the ARB_compute_shader spec, under DispatchCompute: "If the work group count in any dimension is zero, no work groups are dispatched." And then for DispatchComputeIndirect: ... "is equivalent (assuming no errors are generated) to calling DispatchCompute with <num_groups_x>, <num_groups_y> and <num_groups_z>" ... Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94100 Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Ben Widawsky <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Tested-by: Ilia Mirkin <[email protected]>
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