From: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Date: Wed, 19 Sep 2018 17:17:23 +0000 (-0700)
Subject: iris: Fix uses of gl_TessLevel*
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fb4a3e2736885be0cbb9204f1b94a06792d01fa3;p=mesa.git

iris: Fix uses of gl_TessLevel*

The backend compiler expects the gl_TessLevel* variables to be mapped
as inputs instead of system values.  Use the new PIPE_CAP to get this
behavior from GLSL compiler.

Tested with:
tests/spec/arb_tessellation_shader/execution/vs-tcs-tes-tessinner-tessouter-inputs-quads.shader_test
---

diff --git a/src/gallium/drivers/iris/iris_screen.c b/src/gallium/drivers/iris/iris_screen.c
index 8d124d739f8..29a31c91410 100644
--- a/src/gallium/drivers/iris/iris_screen.c
+++ b/src/gallium/drivers/iris/iris_screen.c
@@ -163,6 +163,7 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
    case PIPE_CAP_TEXTURE_GATHER_SM5:
    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
+   case PIPE_CAP_GLSL_TESS_LEVELS_AS_INPUTS:
       return true;
 
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS: