glsl2: Add a new pass at the IR level to break down matrix ops to vector ops.

This will be used by the Mesa IR and likely most HW backends, as it
allows other optimizations to occur that might not otherwise.

Fixes glsl-vs-mat-sub-1, glsl-vs-mat-div-1.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/mesa/shader/ir_to_mesa.cpp b/src/mesa/shader/ir_to_mesa.cpp
index 708c6fece1..81b91918cb 100644
--- a/src/mesa/shader/ir_to_mesa.cpp
+++ b/src/mesa/shader/ir_to_mesa.cpp
@@ -1960,6 +1960,7 @@ _mesa_glsl_compile_shader(GLcontext *ctx, struct gl_shader *shader)
       _mesa_ast_to_hir(shader->ir, state);
 
    /* Lowering */
+   do_mat_op_to_vec(shader->ir);
    do_mod_to_fract(shader->ir);
    do_div_to_mul_rcp(shader->ir);