From 955714759257e81f01f013c84d2bd7f14a0ec04f Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Thu, 10 Nov 2016 22:31:32 -0800 Subject: [PATCH] nir/spirv: Fix handling of gl_PrimitiveId Before, we were always treating it as an output which bogus. The only stage in which this it can be an output is the geometry stage. In all other stages, it's an input which, in the back-end, we actually want to be a system value. Cc: "13.0" Reviewed-by: Dave Airlie --- src/compiler/spirv/vtn_variables.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/src/compiler/spirv/vtn_variables.c b/src/compiler/spirv/vtn_variables.c index bbcca14..c064de8 100644 --- a/src/compiler/spirv/vtn_variables.c +++ b/src/compiler/spirv/vtn_variables.c @@ -806,8 +806,12 @@ vtn_get_builtin_location(struct vtn_builder *b, set_mode_system_value(mode); break; case SpvBuiltInPrimitiveId: - *location = VARYING_SLOT_PRIMITIVE_ID; - *mode = nir_var_shader_out; + if (*mode == nir_var_shader_out) { + *location = VARYING_SLOT_PRIMITIVE_ID; + } else { + *location = SYSTEM_VALUE_PRIMITIVE_ID; + set_mode_system_value(mode); + } break; case SpvBuiltInInvocationId: *location = SYSTEM_VALUE_INVOCATION_ID; -- 2.7.4