From: Marek Olšák Date: Tue, 28 May 2019 23:52:53 +0000 (-0400) Subject: radeonsi/gfx10: fix a possible hang with exp pos0 with done=0 and exec=0 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1e39c21c2362dbeadf4e4e5f147bed3e7bf26ea5;p=mesa.git radeonsi/gfx10: fix a possible hang with exp pos0 with done=0 and exec=0 Acked-by: Bas Nieuwenhuizen --- diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index 2d022438841..7bc22fcfa4f 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -3021,6 +3021,14 @@ void si_llvm_export_vs(struct si_shader_context *ctx, if (pos_args[i].out[0]) shader->info.nr_pos_exports++; + /* Navi10-14 skip POS0 exports if EXEC=0 and DONE=0, causing a hang. + * Setting valid_mask=1 prevents it and has no other effect. + */ + if (ctx->screen->info.family == CHIP_NAVI10 || + ctx->screen->info.family == CHIP_NAVI12 || + ctx->screen->info.family == CHIP_NAVI14) + pos_args[0].valid_mask = 1; + pos_idx = 0; for (i = 0; i < 4; i++) { if (!pos_args[i].out[0])