From 11e75fffeb4afc5be0021477f11e5a18a6ff6abf Mon Sep 17 00:00:00 2001 From: Samuel Pitoiset Date: Wed, 7 Sep 2016 00:12:51 +0200 Subject: [PATCH] nv50/ir: set number of threads/block for variable local size When a variable local size is defined as specified by ARB_compute_variable_group_size, the fixed local size is set to 0 and a SIGFPE occurs when we compute the maximum number of regs. This allows to use 64 GPRs/thread. v4: - use 512 threads on Fermi, 1024 on Kepler+ Signed-off-by: Samuel Pitoiset --- src/gallium/drivers/nouveau/codegen/nv50_ir_target.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_target.h b/src/gallium/drivers/nouveau/codegen/nv50_ir_target.h index 4a701f7..eaf50cc 100644 --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_target.h +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_target.h @@ -175,6 +175,8 @@ public: virtual void parseDriverInfo(const struct nv50_ir_prog_info *info) { threads = info->prop.cp.numThreads; + if (threads == 0) + threads = info->target >= NVISA_GK104_CHIPSET ? 1024 : 512; } virtual bool runLegalizePass(Program *, CGStage stage) const = 0; -- 2.7.4