From: Antia Puentes <apuentes@igalia.com>
Date: Tue, 14 Apr 2015 10:04:24 +0000 (+0200)
Subject: i965/nir/vec4: Derivatives are not allowed in VS
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=dae6025e8efdfb759458a3243c8cd1588f485135;p=mesa.git

i965/nir/vec4: Derivatives are not allowed in VS

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
---

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 584ea5b2299..6ae387a8852 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -861,6 +861,14 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
       inst->saturate = instr->dest.saturate;
       break;
 
+   case nir_op_fddx:
+   case nir_op_fddx_coarse:
+   case nir_op_fddx_fine:
+   case nir_op_fddy:
+   case nir_op_fddy_coarse:
+   case nir_op_fddy_fine:
+      unreachable("derivatives are not valid in vertex shaders");
+
    default:
       unreachable("Unimplemented ALU operation");
    }