i965: Implement the WaPreventHSTessLevelsInterference workaround.

Fixes several GL44-CTS.tessellation_shader (and GL45 and ES31) subcases:
- vertex_spacing
- tessellation_shader_point_mode.points_verification
- tessellation_shader_quads_tessellation.inner_tessellation_level_rounding

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_compiler.h b/src/mesa/drivers/dri/i965/brw_compiler.h
index 10e9f47..7d15c28 100644
--- a/src/mesa/drivers/dri/i965/brw_compiler.h
+++ b/src/mesa/drivers/dri/i965/brw_compiler.h
@@ -220,6 +220,8 @@ struct brw_tcs_prog_key
    /** A bitfield of per-vertex outputs written. */
    uint64_t outputs_written;
 
+   bool quads_workaround;
+
    struct brw_sampler_prog_key_data tex;
 };