From b63a1f8e40b6705d6a1d806fbd38dcd197d4229b Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Thu, 15 Nov 2018 10:18:12 -0800 Subject: glsl: Create file to contain software fp64 functions The following patches will add implementations of various double-precision operations to this file. Reviewed-by: Kenneth Graunke --- src/compiler/glsl/float64.glsl | 58 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 src/compiler/glsl/float64.glsl (limited to 'src/compiler/glsl/float64.glsl') diff --git a/src/compiler/glsl/float64.glsl b/src/compiler/glsl/float64.glsl new file mode 100644 index 00000000000..a299269677a --- /dev/null +++ b/src/compiler/glsl/float64.glsl @@ -0,0 +1,58 @@ +/* + * The implementations contained in this file are heavily based on the + * implementations found in the Berkeley SoftFloat library. As such, they are + * licensed under the same 3-clause BSD license: + * + * License for Berkeley SoftFloat Release 3e + * + * John R. Hauser + * 2018 January 20 + * + * The following applies to the whole of SoftFloat Release 3e as well as to + * each source file individually. + * + * Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 The Regents of the + * University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions, and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions, and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE + * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#version 430 +#extension GL_ARB_gpu_shader_int64 : enable +#extension GL_ARB_shader_bit_encoding : enable + +#pragma warning(off) + +/* Software IEEE floating-point rounding mode. + * GLSL spec section "4.7.1 Range and Precision": + * The rounding mode cannot be set and is undefined. + * But here, we are able to define the rounding mode at the compilation time. + */ +#define FLOAT_ROUND_NEAREST_EVEN 0 +#define FLOAT_ROUND_TO_ZERO 1 +#define FLOAT_ROUND_DOWN 2 +#define FLOAT_ROUND_UP 3 +#define FLOAT_ROUNDING_MODE FLOAT_ROUND_NEAREST_EVEN -- cgit v1.2.3