From f805593b129729e516dea30245612b6a49b8505a Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Tue, 31 Jan 2017 08:31:37 -0500 Subject: [PATCH] freedreno/ir3: fragz cannot be half precision Signed-off-by: Rob Clark --- src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c index 77d86855ddb..bb3f66c2300 100644 --- a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c +++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c @@ -2428,8 +2428,14 @@ ir3_compile_shader_nir(struct ir3_compiler *compiler, if (so->key.half_precision) { for (i = 0; i < ir->noutputs; i++) { struct ir3_instruction *out = ir->outputs[i]; + if (!out) continue; + + /* if frag shader writes z, that needs to be full precision: */ + if (so->outputs[i/4].slot == FRAG_RESULT_DEPTH) + continue; + out->regs[0]->flags |= IR3_REG_HALF; /* output could be a fanout (ie. texture fetch output) * in which case we need to propagate the half-reg flag -- 2.30.2