glsl ubo/ssbo: Move common code into lower_buffer_access::setup_buffer_access

This code will also be usable by the pass to lower shared variables.

Note, that *const_offset is adjusted by setup_buffer_access so it must
be initialized before calling setup_buffer_access.

v2:
 * Add comment for lower_buffer_access::setup_buffer_access

Signed-off-by: Jordan Justen <[email protected]>
Reviewed-by: Iago Toral Quiroga <[email protected]>
Reviewed-by: Kristian Høgsberg <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/glsl/lower_buffer_access.h b/src/glsl/lower_buffer_access.h
index 806687609b5..cc4614e9792 100644
--- a/src/glsl/lower_buffer_access.h
+++ b/src/glsl/lower_buffer_access.h
@@ -53,6 +53,11 @@ public:
                     unsigned int packing, unsigned int write_mask);
 
    bool is_dereferenced_thing_row_major(const ir_rvalue *deref);
+
+   void setup_buffer_access(void *mem_ctx, ir_variable *var, ir_rvalue *deref,
+                            ir_rvalue **offset, unsigned *const_offset,
+                            bool *row_major, int *matrix_columns,
+                            unsigned packing);
 };
 
 } /* namespace lower_buffer_access */