diff options
| author | Kenneth Graunke <kenneth@whitecape.org> | 2014-04-06 22:41:34 -0700 |
|---|---|---|
| committer | Kenneth Graunke <kenneth@whitecape.org> | 2014-04-08 00:01:58 -0700 |
| commit | e14b93371cc8394bd69622f6b60cfdf8ba177360 (patch) | |
| tree | 10a291ed187aa298fe52574811f688b618c774f3 /src/glsl | |
| parent | 4311f9878d0d43a4214d6716eacf85e3443acd45 (diff) | |
glsl: Fix lack of i2u in lower_ubo_reference.
ir_binop_ubo_load takes unsigned integer operands. However, the array
index used to compute these offsets may be a signed integer. (For
example, see Piglit's spec/glsl-1.40/uniform_buffer/fs-bvec-array).
For some reason, we were missing an ir_binop_i2u cast, and ir_validator
was failing to catch that.
Without this change, ir_builder's type inference code broke for me when
writing a new optimization pass.
Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/lower_ubo_reference.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/glsl/lower_ubo_reference.cpp b/src/glsl/lower_ubo_reference.cpp index c73b148b00f..90e65bd0ea0 100644 --- a/src/glsl/lower_ubo_reference.cpp +++ b/src/glsl/lower_ubo_reference.cpp @@ -194,12 +194,16 @@ lower_ubo_reference_visitor::handle_rvalue(ir_rvalue **rvalue) array_stride = glsl_align(array_stride, 16); } - ir_constant *const_index = deref_array->array_index->as_constant(); + ir_rvalue *array_index = deref_array->array_index; + if (array_index->type->base_type == GLSL_TYPE_INT) + array_index = i2u(array_index); + + ir_constant *const_index = array_index->as_constant(); if (const_index) { - const_offset += array_stride * const_index->value.i[0]; + const_offset += array_stride * const_index->value.u[0]; } else { offset = add(offset, - mul(deref_array->array_index, + mul(array_index, new(mem_ctx) ir_constant(array_stride))); } deref = deref_array->array->as_dereference(); |