diff options
Diffstat (limited to 'src/3rdparty/angle/src/libGLESv2/Float16ToFloat32.py')
-rw-r--r-- | src/3rdparty/angle/src/libGLESv2/Float16ToFloat32.py | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/src/3rdparty/angle/src/libGLESv2/Float16ToFloat32.py b/src/3rdparty/angle/src/libGLESv2/Float16ToFloat32.py deleted file mode 100644 index cf039bfc21..0000000000 --- a/src/3rdparty/angle/src/libGLESv2/Float16ToFloat32.py +++ /dev/null @@ -1,78 +0,0 @@ -# Copyright (c) 2012 The ANGLE Project Authors. All rights reserved. -# Use of this source code is governed by a BSD-style license that can be -# found in the LICENSE file. -# - -# This script generates a function that converts 16-bit precision floating -# point numbers to 32-bit. -# It is based on ftp://ftp.fox-toolkit.org/pub/fasthalffloatconversion.pdf. - -def convertMantissa(i): - if i == 0: - return 0 - elif i < 1024: - m = i << 13 - e = 0 - while not (m & 0x00800000): - e -= 0x00800000 - m = m << 1 - m &= ~0x00800000 - e += 0x38800000 - return m | e - else: - return 0x38000000 + ((i - 1024) << 13) - -def convertExponent(i): - if i == 0: - return 0 - elif i in range(1, 31): - return i << 23 - elif i == 31: - return 0x47800000 - elif i == 32: - return 0x80000000 - elif i in range(33, 63): - return 0x80000000 + ((i - 32) << 23) - else: - return 0xC7800000 - -def convertOffset(i): - if i == 0 or i == 32: - return 0 - else: - return 1024 - -print """// -// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. -// - -// This file is automatically generated. - -namespace gl -{ -""" - -print "const static unsigned g_mantissa[2048] = {" -for i in range(0, 2048): - print " %#010x," % convertMantissa(i) -print "};\n" - -print "const static unsigned g_exponent[64] = {" -for i in range(0, 64): - print " %#010x," % convertExponent(i) -print "};\n" - -print "const static unsigned g_offset[64] = {" -for i in range(0, 64): - print " %#010x," % convertOffset(i) -print "};\n" - -print """float float16ToFloat32(unsigned short h) -{ - unsigned i32 = g_mantissa[g_offset[h >> 10] + (h & 0x3ff)] + g_exponent[h >> 10]; - return *(float*) &i32; -} -} -""" |