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author | marha <marha@users.sourceforge.net> | 2010-12-28 16:10:20 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2010-12-28 16:10:20 +0000 |
commit | 807c6931fe683fd844ceec1b023232181e6aae03 (patch) | |
tree | 1a131ed95fe2200d0ad33da8f7755a7ed2364adc /mesalib/src/glsl/ir_explog_to_explog2.cpp | |
parent | 973099dda7e49e5abe29819a7124b3b1e7bd8b92 (diff) | |
download | vcxsrv-807c6931fe683fd844ceec1b023232181e6aae03.tar.gz vcxsrv-807c6931fe683fd844ceec1b023232181e6aae03.tar.bz2 vcxsrv-807c6931fe683fd844ceec1b023232181e6aae03.zip |
xserver and mesa git update 28-12-2010
Diffstat (limited to 'mesalib/src/glsl/ir_explog_to_explog2.cpp')
-rw-r--r-- | mesalib/src/glsl/ir_explog_to_explog2.cpp | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/mesalib/src/glsl/ir_explog_to_explog2.cpp b/mesalib/src/glsl/ir_explog_to_explog2.cpp deleted file mode 100644 index 78694a202..000000000 --- a/mesalib/src/glsl/ir_explog_to_explog2.cpp +++ /dev/null @@ -1,85 +0,0 @@ -/* - * Copyright © 2010 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -/** - * \file ir_explog_to_explog2.cpp - * - * Many GPUs don't have a base e log or exponent instruction, but they - * do have base 2 versions, so this pass converts exp and log to exp2 - * and log2 operations. - */ - -#include "main/core.h" /* for log2f on MSVC */ -#include "ir.h" -#include "glsl_types.h" - -class ir_explog_to_explog2_visitor : public ir_hierarchical_visitor { -public: - ir_explog_to_explog2_visitor() - { - this->progress = false; - } - - ir_visitor_status visit_leave(ir_expression *); - - bool progress; -}; - -bool -do_explog_to_explog2(exec_list *instructions) -{ - ir_explog_to_explog2_visitor v; - - visit_list_elements(&v, instructions); - return v.progress; -} - -ir_visitor_status -ir_explog_to_explog2_visitor::visit_leave(ir_expression *ir) -{ - if (ir->operation == ir_unop_exp) { - void *mem_ctx = talloc_parent(ir); - ir_constant *log2_e = new(mem_ctx) ir_constant(log2f(M_E)); - - ir->operation = ir_unop_exp2; - ir->operands[0] = new(mem_ctx) ir_expression(ir_binop_mul, - ir->operands[0]->type, - ir->operands[0], - log2_e); - this->progress = true; - } - - if (ir->operation == ir_unop_log) { - void *mem_ctx = talloc_parent(ir); - - ir->operation = ir_binop_mul; - ir->operands[0] = new(mem_ctx) ir_expression(ir_unop_log2, - ir->operands[0]->type, - ir->operands[0], - NULL); - ir->operands[1] = new(mem_ctx) ir_constant(1.0f / log2f(M_E)); - this->progress = true; - } - - return visit_continue; -} |