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ir_to_mesa: Don't generate swizzles for record derefs of non-scalar/vectors

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This is the same as what the array dereference handler does.

Fixes piglit test glsl-link-struct-array (bugzilla #31648).

NOTE: This is a candidate for the 7.9 and 7.10 branches.
This commit is contained in:
Ian Romanick 2010-12-13 15:42:46 -08:00
parent cb2b547a47
commit 2d577ee730
1 changed files with 7 additions and 1 deletions
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8
src/mesa/program/ir_to_mesa.cpp
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@ -1569,7 +1569,13 @@ ir_to_mesa_visitor::visit(ir_dereference_record *ir)
break;
offset += type_size(struct_type->fields.structure[i].type);
}
this->result.swizzle = swizzle_for_size(ir->type->vector_elements);
/* If the type is smaller than a vec4, replicate the last channel out. */
if (ir->type->is_scalar() || ir->type->is_vector())
this->result.swizzle = swizzle_for_size(ir->type->vector_elements);
else
this->result.swizzle = SWIZZLE_NOOP;
this->result.index += offset;
}