i965: Fix scalar vertex shader struct outputs.

While we correctly set output[] for composite varyings, we set completely
bogus values for output_components[], making emit_urb_writes() output
zeros instead of the actual values.

Unfortunately, our simple approach goes out the window, and we need to
recurse into structs to get the proper value of vector_elements for each
field.

Together with the previous patch, this fixes rendering in an upcoming
game from Feral Interactive.

v2: Use pointers instead of pass-by-mutable-reference (Jason, Matt).

Cc: "11.1 11.0" <[email protected]>
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Matt Turner <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h
index 621d8d59535..bca4589b076 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.h
+++ b/src/mesa/drivers/dri/i965/brw_fs.h
@@ -223,6 +223,8 @@ public:
 
    void emit_nir_code();
    void nir_setup_inputs();
+   void nir_setup_single_output_varying(fs_reg *reg, const glsl_type *type,
+                                        unsigned *location);
    void nir_setup_outputs();
    void nir_setup_uniforms();
    void nir_emit_system_values();