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See e86c40a84d241b954594f5ae7df9b9c3fc797a4e for reasoning. In the
process I did s/:=/=/ to shut up automake about nonportable make syntax.
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v2: Fix handling of arrays-of-structure. Thanks to Eric Anholt for
pointing this out.
v3: Minor comment change based on feedback from Ken.
Fixes piglit glsl-1.20/execution/uniform-initializer/fs-structure-array
and glsl-1.20/execution/uniform-initializer/vs-structure-array.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Previously, I tried implementing this in the i965 driver, but did so
in a way that violated the intent of the spec, and broke Tropics.
Reviewed-by: Kenneth Graunke <[email protected]>
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This conflicts with the GLSL 1.30+ rules for derivatives after a
discard has occurred.
Reviewed-by: Kenneth Graunke <[email protected]>
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The C++ constructors with placement new, while functional, are
extremely verbose, leading to generation of simple GLSL IR expressions
like (a * b + c * d) expanding to many lines of code and using lots of
temporary variables. By creating a new ir_builder.h that puts simple
generators in our namespace and taking advantage of ralloc_parent(),
we can generate much more compact code, at a minor runtime cost.
v2: Replace ir_instruction usage with just ir_rvalue.
v3: Drop remaining missed as_rvalue() in v2.
Reviewed-by: Kenneth Graunke <[email protected]>
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I've had this code laying around almost done for a long time. The
idea is like opt_structure_splitting, that we've got a bunch of
transforms at the GLSL IR level that only understand scalars and
vectors, which just skip complicated dereferences. While driver
backends may manage some optimization after they split matrices up
themselves, it would be better to bring all of our optimization to
bear on the problem.
While I wasn't expecting changes quite yet, a few programs end up
winning: a gstreamer convolution shader, and the Humus dynamic
branching demo:
Total instructions: 269430 -> 269342
3/2148 programs affected (0.1%)
1498 -> 1410 instructions in affected programs (5.9% reduction)
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automake uses variables named *_SOURCES.
Reviewed-by: Eric Anholt <[email protected]>
Tested-by: Eric Anholt <[email protected]>
Signed-off-by: Matt Turner <[email protected]>
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This is similar to Gallium's existing glsl_to_tgsi::remove_output_read
lowering pass, but done entirely inside the GLSL compiler.
Signed-off-by: Vincent Lejeune <[email protected]>
Signed-off-by: Kenneth Graunke <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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It's only about builtins, not variables in general.
Reviewed-by: Ian Romanick <[email protected]>
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With the hope that Android.mk and SConscript can share the file to reduce
future breakage.
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Chad Versace <[email protected]>
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