Mercurial > sdl-ios-xcode
view src/hermes/HeadX86.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 | bb5ace455586 |
children | 782fd950bd46 c121d94672cb 39b9405d3cb6 |
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/* Header definitions for the x86 routines for the HERMES library Copyright (c) 1998 Christian Nentwich (brn@eleet.mcb.at) This source code is licensed under the GNU LGPL Please refer to the file COPYING.LIB contained in the distribution for licensing conditions */ #ifndef __HERMES_HEAD_X86__ #define __HERMES_HEAD_X86__ #ifdef X86_ASSEMBLER /* If you can't stand IFDEFS, then close your eyes now, please :) */ /* Ok, we start with normal function definitions */ #ifdef __cplusplus extern "C" { #endif void STACKCALL ConvertX86(HermesConverterInterface *); void STACKCALL ClearX86_32(HermesClearInterface *); void STACKCALL ClearX86_24(HermesClearInterface *); void STACKCALL ClearX86_16(HermesClearInterface *); void STACKCALL ClearX86_8(HermesClearInterface *); int STACKCALL Hermes_X86_CPU(); void ConvertX86p32_32BGR888(); void ConvertX86p32_32RGBA888(); void ConvertX86p32_32BGRA888(); void ConvertX86p32_24RGB888(); void ConvertX86p32_24BGR888(); void ConvertX86p32_16RGB565(); void ConvertX86p32_16BGR565(); void ConvertX86p32_16RGB555(); void ConvertX86p32_16BGR555(); void ConvertX86p32_8RGB332(); void ConvertX86p16_32RGB888(); void ConvertX86p16_32BGR888(); void ConvertX86p16_32RGBA888(); void ConvertX86p16_32BGRA888(); void ConvertX86p16_24RGB888(); void ConvertX86p16_24BGR888(); void ConvertX86p16_16BGR565(); void ConvertX86p16_16RGB555(); void ConvertX86p16_16BGR555(); void ConvertX86p16_8RGB332(); void CopyX86p_4byte(); void CopyX86p_3byte(); void CopyX86p_2byte(); void CopyX86p_1byte(); void ConvertX86pI8_32(); void ConvertX86pI8_24(); void ConvertX86pI8_16(); extern int ConvertX86p16_32RGB888_LUT_X86[512]; extern int ConvertX86p16_32BGR888_LUT_X86[512]; extern int ConvertX86p16_32RGBA888_LUT_X86[512]; extern int ConvertX86p16_32BGRA888_LUT_X86[512]; #ifdef __cplusplus } #endif /* Now fix up the ELF underscore problem */ #if defined(__ELF__) && defined(__GNUC__) #ifdef __cplusplus extern "C" { #endif extern int _Hermes_X86_CPU(); extern void _ConvertX86(HermesConverterInterface *); extern void _ConvertX86p32_32BGR888(); extern void _ConvertX86p32_32RGBA888(); extern void _ConvertX86p32_32BGRA888(); extern void _ConvertX86p32_24RGB888(); extern void _ConvertX86p32_24BGR888(); extern void _ConvertX86p32_16RGB565(); extern void _ConvertX86p32_16BGR565(); extern void _ConvertX86p32_16RGB555(); extern void _ConvertX86p32_16BGR555(); extern void _ConvertX86p32_8RGB332(); extern void _ConvertX86p16_16BGR565(); extern void _ConvertX86p16_16RGB555(); extern void _ConvertX86p16_16BGR555(); extern void _ConvertX86p16_8RGB332(); #define Hermes_X86_CPU _Hermes_X86_CPU #define ConvertX86 _ConvertX86 #define ConvertX86p32_32BGR888 _ConvertX86p32_32BGR888 #define ConvertX86p32_32RGBA888 _ConvertX86p32_32RGBA888 #define ConvertX86p32_32BGRA888 _ConvertX86p32_32BGRA888 #define ConvertX86p32_24RGB888 _ConvertX86p32_24RGB888 #define ConvertX86p32_24BGR888 _ConvertX86p32_24BGR888 #define ConvertX86p32_16RGB565 _ConvertX86p32_16RGB565 #define ConvertX86p32_16BGR565 _ConvertX86p32_16BGR565 #define ConvertX86p32_16RGB555 _ConvertX86p32_16RGB555 #define ConvertX86p32_16BGR555 _ConvertX86p32_16BGR555 #define ConvertX86p32_8RGB332 _ConvertX86p32_8RGB332 #define ConvertX86p16_16BGR565 _ConvertX86p16_16BGR565 #define ConvertX86p16_16RGB555 _ConvertX86p16_16RGB555 #define ConvertX86p16_16BGR555 _ConvertX86p16_16BGR555 #define ConvertX86p16_8RGB332 _ConvertX86p16_8RGB332 #ifdef __cplusplus } #endif #endif /* ELF & GNU */ /* Make it run with WATCOM C */ #ifdef __WATCOMC__ #pragma warning 601 9 #pragma aux Hermes_X86_CPU "_*" #pragma aux ConvertX86 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ClearX86_32 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ClearX86_24 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ClearX86_16 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ClearX86_8 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ConvertX86p32_32BGR888 "_*" #pragma aux ConvertX86p32_32RGBA888 "_*" #pragma aux ConvertX86p32_32BGRA888 "_*" #pragma aux ConvertX86p32_24RGB888 "_*" #pragma aux ConvertX86p32_24BGR888 "_*" #pragma aux ConvertX86p32_16RGB565 "_*" #pragma aux ConvertX86p32_16BGR565 "_*" #pragma aux ConvertX86p32_16RGB555 "_*" #pragma aux ConvertX86p32_16BGR555 "_*" #pragma aux ConvertX86p32_8RGB332 "_*" #pragma aux ConvertX86p16_32RGB888 "_*" #pragma aux ConvertX86p16_32BGR888 "_*" #pragma aux ConvertX86p16_32RGBA888 "_*" #pragma aux ConvertX86p16_32BGRA888 "_*" #pragma aux ConvertX86p16_24RGB888 "_*" #pragma aux ConvertX86p16_24BGR888 "_*" #pragma aux ConvertX86p16_16BGR565 "_*" #pragma aux ConvertX86p16_16RGB555 "_*" #pragma aux ConvertX86p16_16BGR555 "_*" #pragma aux ConvertX86p16_8RGB332 "_*" #pragma aux CopyX86p_4byte "_*" #pragma aux CopyX86p_3byte "_*" #pragma aux CopyX86p_2byte "_*" #pragma aux CopyX86p_1byte "_*" #pragma aux ConvertX86pI8_32 "_*" #pragma aux ConvertX86pI8_24 "_*" #pragma aux ConvertX86pI8_16 "_*" #pragma aux ConvertX86p16_32RGB888_LUT_X86 "_*" #pragma aux ConvertX86p16_32BGR888_LUT_X86 "_*" #pragma aux ConvertX86p16_32RGBA888_LUT_X86 "_*" #pragma aux ConvertX86p16_32BGRA888_LUT_X86 "_*" #endif /* __WATCOMC__ */ #endif /* X86_ASSEMBLER */ #endif