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annotate src/timer/macos/FastTimes.h @ 1240:3b8a43c428bb

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From Bug #36: There are a couple of issues with the selection of Altivec alpha-blitting routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c. 1) There's no check for the presence of Altivec when checking if the Blit32to565PixelAlphaAltivec() routine can be selected. 2) Altivec cannot be used in video memory, and there's no check if the destination surface is a hardware surface. (Alpha-blitting to a hardware surface with GPU support is a bad idea, but somebody's bound to do it anyway.) Patch to fix these attached.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 08 Jan 2006 21:18:15 +0000
parents 74212992fb08
children d910939febfa
rev   line source
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Sam Lantinga <slouken@lokigames.com>
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1 /* File "FastTimes.h" - Original code by Matt Slot <fprefect@ambrosiasw.com> */
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2 /* Created 4/24/99 - This file is hereby placed in the public domain */
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3 /* Updated 5/21/99 - Calibrate to VIA, add TBR support, renamed functions */
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4 /* Updated 10/4/99 - Use AbsoluteToNanoseconds() in case Absolute = double */
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5 /* Updated 2/15/00 - Check for native Time Manager, no need to calibrate */
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6 /* Updated 3/21/00 - Fixed ns conversion, create 2 different scale factors */
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7 /* Updated 5/03/00 - Added copyright and placed into PD. No code changes */
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8
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9 /* This file is Copyright (C) Matt Slot, 1999-2000. It is hereby placed into
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10 the public domain. The author makes no warranty as to fitness or stability */
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11
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12 #ifndef __FAST_TIMES_HEADER__
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13 #define __FAST_TIMES_HEADER__
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14
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15 /* **** **** **** **** **** **** **** **** **** **** **** **** **** **** **** */
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16 /* **** **** **** **** **** **** **** **** **** **** **** **** **** **** **** */
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17
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18 extern void FastInitialize(void);
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19 extern UInt64 FastMicroseconds(void);
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20 extern UInt64 FastMilliseconds(void);
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21 extern StringPtr FastMethod(void);
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22
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23 /* **** **** **** **** **** **** **** **** **** **** **** **** **** **** **** */
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24 /* **** **** **** **** **** **** **** **** **** **** **** **** **** **** **** */
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25
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26 #endif /* __FAST_TIMES_HEADER__ */