gfx/skia/trunk/src/core/SkFDot6.h@8bccb770b82d (annotated)
gfx/skia/trunk/src/core/SkFDot6.h
Wed, 31 Dec 2014 13:27:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 13:27:57 +0100
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
- permissions
- -rw-r--r--
Ignore runtime configuration files generated during quality assurance.
| michael@0 | 1 | |
| michael@0 | 2 | /* |
| michael@0 | 3 | * Copyright 2006 The Android Open Source Project |
| michael@0 | 4 | * |
| michael@0 | 5 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 6 | * found in the LICENSE file. |
| michael@0 | 7 | */ |
| michael@0 | 8 | |
| michael@0 | 9 | |
| michael@0 | 10 | #ifndef SkFDot6_DEFINED |
| michael@0 | 11 | #define SkFDot6_DEFINED |
| michael@0 | 12 | |
| michael@0 | 13 | #include "SkScalar.h" |
| michael@0 | 14 | #include "SkMath.h" |
| michael@0 | 15 | |
| michael@0 | 16 | typedef int32_t SkFDot6; |
| michael@0 | 17 | |
| michael@0 | 18 | #define SK_FDot6One (64) |
| michael@0 | 19 | #define SK_FDot6Half (32) |
| michael@0 | 20 | |
| michael@0 | 21 | #ifdef SK_DEBUG |
| michael@0 | 22 | inline SkFDot6 SkIntToFDot6(S16CPU x) { |
| michael@0 | 23 | SkASSERT(SkToS16(x) == x); |
| michael@0 | 24 | return x << 6; |
| michael@0 | 25 | } |
| michael@0 | 26 | #else |
| michael@0 | 27 | #define SkIntToFDot6(x) ((x) << 6) |
| michael@0 | 28 | #endif |
| michael@0 | 29 | |
| michael@0 | 30 | #define SkFDot6Floor(x) ((x) >> 6) |
| michael@0 | 31 | #define SkFDot6Ceil(x) (((x) + 63) >> 6) |
| michael@0 | 32 | #define SkFDot6Round(x) (((x) + 32) >> 6) |
| michael@0 | 33 | |
| michael@0 | 34 | #define SkFixedToFDot6(x) ((x) >> 10) |
| michael@0 | 35 | |
| michael@0 | 36 | inline SkFixed SkFDot6ToFixed(SkFDot6 x) { |
| michael@0 | 37 | SkASSERT((x << 10 >> 10) == x); |
| michael@0 | 38 | |
| michael@0 | 39 | return x << 10; |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | #define SkScalarToFDot6(x) (SkFDot6)((x) * 64) |
| michael@0 | 43 | #define SkFDot6ToScalar(x) ((SkScalar)(x) * 0.015625f) |
| michael@0 | 44 | |
| michael@0 | 45 | inline SkFixed SkFDot6Div(SkFDot6 a, SkFDot6 b) { |
| michael@0 | 46 | SkASSERT(b != 0); |
| michael@0 | 47 | |
| michael@0 | 48 | if (a == (int16_t)a) { |
| michael@0 | 49 | return (a << 16) / b; |
| michael@0 | 50 | } else { |
| michael@0 | 51 | return SkFixedDiv(a, b); |
| michael@0 | 52 | } |
| michael@0 | 53 | } |
| michael@0 | 54 | |
| michael@0 | 55 | #endif |
