Mercurial > sdl-ios-xcode
view src/video/directfb/SDL_DirectFB_keys.h @ 1542:a8bf1aa21020
Fixed bug #15
SDL_blit_A.mmx-speed.patch.txt --
Speed improvements and a bugfix for the current GCC inline mmx
asm code:
- Changed some ops and removed some resulting useless ones.
- Added some instruction parallelism (some gain)
The resulting speed on my Xeon improved upto 35% depending on
the function (measured in fps).
- Fixed a bug where BlitRGBtoRGBSurfaceAlphaMMX() was
setting the alpha component on the destination surfaces (to
opaque-alpha) even when the surface had none.
SDL_blit_A.mmx-msvc.patch.txt --
MSVC mmx intrinsics version of the same GCC asm code.
MSVC compiler tries to parallelize the code and to avoid
register stalls, but does not always do a very good job.
Per-surface blending MSVC functions run quite a bit faster
than their pure-asm counterparts (upto 55% faster for 16bit
ones), but the per-pixel blending runs somewhat slower than asm.
- BlitRGBtoRGBSurfaceAlphaMMX and BlitRGBtoRGBPixelAlphaMMX (and all
variants) can now also handle formats other than (A)RGB8888. Formats
like RGBA8888 and some quite exotic ones are allowed -- like
RAGB8888, or actually anything having channels aligned on 8bit
boundary and full 8bit alpha (for per-pixel alpha blending).
The performance cost of this change is virtually 0 for per-surface
alpha blending (no extra ops inside the loop) and a single non-MMX
op inside the loop for per-pixel blending. In testing, the per-pixel
alpha blending takes a ~2% performance hit, but it still runs much
faster than the current code in CVS. If necessary, a separate function
with this functionality can be made.
This code requires Processor Pack for VC6.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 15 Mar 2006 15:39:29 +0000 |
parents | cb384ef627f6 |
children | 782fd950bd46 |
line wrap: on
line source
#define SCANCODE_ESCAPE 1 #define SCANCODE_1 2 #define SCANCODE_2 3 #define SCANCODE_3 4 #define SCANCODE_4 5 #define SCANCODE_5 6 #define SCANCODE_6 7 #define SCANCODE_7 8 #define SCANCODE_8 9 #define SCANCODE_9 10 #define SCANCODE_0 11 #define SCANCODE_MINUS 12 #define SCANCODE_EQUAL 13 #define SCANCODE_BACKSPACE 14 #define SCANCODE_TAB 15 #define SCANCODE_Q 16 #define SCANCODE_W 17 #define SCANCODE_E 18 #define SCANCODE_R 19 #define SCANCODE_T 20 #define SCANCODE_Y 21 #define SCANCODE_U 22 #define SCANCODE_I 23 #define SCANCODE_O 24 #define SCANCODE_P 25 #define SCANCODE_BRACKET_LEFT 26 #define SCANCODE_BRACKET_RIGHT 27 #define SCANCODE_ENTER 28 #define SCANCODE_LEFTCONTROL 29 #define SCANCODE_A 30 #define SCANCODE_S 31 #define SCANCODE_D 32 #define SCANCODE_F 33 #define SCANCODE_G 34 #define SCANCODE_H 35 #define SCANCODE_J 36 #define SCANCODE_K 37 #define SCANCODE_L 38 #define SCANCODE_SEMICOLON 39 #define SCANCODE_APOSTROPHE 40 #define SCANCODE_GRAVE 41 #define SCANCODE_LEFTSHIFT 42 #define SCANCODE_BACKSLASH 43 #define SCANCODE_Z 44 #define SCANCODE_X 45 #define SCANCODE_C 46 #define SCANCODE_V 47 #define SCANCODE_B 48 #define SCANCODE_N 49 #define SCANCODE_M 50 #define SCANCODE_COMMA 51 #define SCANCODE_PERIOD 52 #define SCANCODE_SLASH 53 #define SCANCODE_RIGHTSHIFT 54 #define SCANCODE_KEYPADMULTIPLY 55 #define SCANCODE_LEFTALT 56 #define SCANCODE_SPACE 57 #define SCANCODE_CAPSLOCK 58 #define SCANCODE_F1 59 #define SCANCODE_F2 60 #define SCANCODE_F3 61 #define SCANCODE_F4 62 #define SCANCODE_F5 63 #define SCANCODE_F6 64 #define SCANCODE_F7 65 #define SCANCODE_F8 66 #define SCANCODE_F9 67 #define SCANCODE_F10 68 #define SCANCODE_NUMLOCK 69 #define SCANCODE_SCROLLLOCK 70 #define SCANCODE_KEYPAD7 71 #define SCANCODE_CURSORUPLEFT 71 #define SCANCODE_KEYPAD8 72 #define SCANCODE_CURSORUP 72 #define SCANCODE_KEYPAD9 73 #define SCANCODE_CURSORUPRIGHT 73 #define SCANCODE_KEYPADMINUS 74 #define SCANCODE_KEYPAD4 75 #define SCANCODE_CURSORLEFT 75 #define SCANCODE_KEYPAD5 76 #define SCANCODE_KEYPAD6 77 #define SCANCODE_CURSORRIGHT 77 #define SCANCODE_KEYPADPLUS 78 #define SCANCODE_KEYPAD1 79 #define SCANCODE_CURSORDOWNLEFT 79 #define SCANCODE_KEYPAD2 80 #define SCANCODE_CURSORDOWN 80 #define SCANCODE_KEYPAD3 81 #define SCANCODE_CURSORDOWNRIGHT 81 #define SCANCODE_KEYPAD0 82 #define SCANCODE_KEYPADPERIOD 83 #define SCANCODE_LESS 86 #define SCANCODE_F11 87 #define SCANCODE_F12 88 #define SCANCODE_KEYPADENTER 96 #define SCANCODE_RIGHTCONTROL 97 #define SCANCODE_CONTROL 97 #define SCANCODE_KEYPADDIVIDE 98 #define SCANCODE_PRINTSCREEN 99 #define SCANCODE_RIGHTALT 100 #define SCANCODE_BREAK 101 /* Beware: is 119 */ #define SCANCODE_BREAK_ALTERNATIVE 119 /* on some keyboards! */ #define SCANCODE_HOME 102 #define SCANCODE_CURSORBLOCKUP 90 /* Cursor key block */ #define SCANCODE_PAGEUP 104 #define SCANCODE_CURSORBLOCKLEFT 92 /* Cursor key block */ #define SCANCODE_CURSORBLOCKRIGHT 94 /* Cursor key block */ #define SCANCODE_END 107 #define SCANCODE_CURSORBLOCKDOWN 108 /* Cursor key block */ #define SCANCODE_PAGEDOWN 109 #define SCANCODE_INSERT 110 #define SCANCODE_REMOVE 111 #define SCANCODE_RIGHTWIN 126 #define SCANCODE_LEFTWIN 125