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Revert use of Mesa IR optimizer for ARB_fragment_programs

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Commit f82f2fb3dc added use of the Mesa
IR optimizer for both ARB_fragment_program and ARB_vertex_program, but
only justified the vertex-program portions with measured performance
improvements.

Meanwhile, the optimizer was seen to generate hundreds of unused
immediates without discarding them, causing failures.

Discard the use of the optimizer for now to fix the regression. (In
the future, we anticpate things moving from Mesa IR to NIR for better
optimization anyway.)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82477

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

CC: "10.3 10.4 10.5" <mesa-stable@lists.freedesktop.org>
This commit is contained in:
Carl Worth 2015-02-12 10:14:24 -08:00
parent 1ba9f9e62c
commit 55a57834bf
1 changed files with 0 additions and 3 deletions
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3
src/mesa/program/arbprogparse.c
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@ -85,9 +85,6 @@ _mesa_parse_arb_fragment_program(struct gl_context* ctx, GLenum target,
return;
}
if ((ctx->_Shader->Flags & GLSL_NO_OPT) == 0)
_mesa_optimize_program(ctx, &prog);
free(program->Base.String);
/* Copy the relevant contents of the arb_program struct into the