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i965: Don't add base_binding_table_index if it's zero

Graphics / Mesa 3D Graphics Library / Mesa - Neil Roberts [linux.intel.com] - 30 May 2015 18:48 UTC

When calculating the binding table index for non-constant sampler array indexing it needs to add the base binding table index which is a constant within the generated code. Often this base is zero so we can avoid a redundant instruction in that case.

It looks like nothing in shader-db is doing non-constant sampler array indexing so this patch doesn't make any difference but it might be worth having anyway.

7f62fda i965: Don't add base_binding_table_index if it's zero
src/mesa/drivers/dri/i965/brw_fs_generator.cpp | 3 ++-
src/mesa/drivers/dri/i965/brw_vec4_generator.cpp | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)

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