Mercurial > sdl-ios-xcode
view src/hermes/HeadMMX.h @ 1240:3b8a43c428bb
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 | bb5ace455586 |
children | d910939febfa |
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/* Header definitions for the MMX routines for the HERMES library Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk) 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_MMX__ #define __HERMES_HEAD_MMX__ /* If you cannot stand ifdefs, then please do not look into this file, it's going to end your life :) */ #ifdef X86_ASSEMBLER #ifdef __cplusplus extern "C" { #endif void STACKCALL ConvertMMX(HermesConverterInterface *); void STACKCALL ClearMMX_32(HermesClearInterface *); void STACKCALL ClearMMX_24(HermesClearInterface *); void STACKCALL ClearMMX_16(HermesClearInterface *); void STACKCALL ClearMMX_8(HermesClearInterface *); void ConvertMMXpII32_24RGB888(); void ConvertMMXpII32_16RGB565(); void ConvertMMXpII32_16BGR565(); void ConvertMMXpII32_16RGB555(); void ConvertMMXpII32_16BGR565(); void ConvertMMXpII32_16BGR555(); void ConvertMMXp32_16RGB555(); #ifdef __cplusplus } #endif /* Fix the underscore business with ELF compilers */ #if defined(__ELF__) && defined(__GNUC__) #ifdef __cplusplus extern "C" { #endif extern void _ConvertMMX(HermesConverterInterface *); extern void _ConvertMMXpII32_24RGB888(); extern void _ConvertMMXpII32_16RGB565(); extern void _ConvertMMXpII32_16BGR565(); extern void _ConvertMMXpII32_16RGB555(); extern void _ConvertMMXpII32_16BGR555(); #define ConvertMMX _ConvertMMX #define ConvertMMXpII32_24RGB888 _ConvertMMXpII32_24RGB888 #define ConvertMMXpII32_16RGB565 _ConvertMMXpII32_16RGB565 #define ConvertMMXpII32_16BGR565 _ConvertMMXpII32_16BGR565 #define ConvertMMXpII32_16RGB555 _ConvertMMXpII32_16RGB555 #define ConvertMMXpII32_16BGR555 _ConvertMMXpII32_16BGR555 #ifdef __cplusplus } #endif #endif /* ELF and GNUC */ /* Make it work with Watcom */ #ifdef __WATCOMC__ #pragma warning 601 9 #pragma aux ConvertMMX "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ClearMMX_32 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ClearMMX_24 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ClearMMX_16 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ClearMMX_8 "_*" modify [EAX EBX ECX EDX ESI EDI] #pragma aux ConvertMMXpII32_24RGB888 "_*" #pragma aux ConvertMMXpII32_16RGB565 "_*" #pragma aux ConvertMMXpII32_16BGR565 "_*" #pragma aux ConvertMMXpII32_16RGB555 "_*" #pragma aux ConvertMMXpII32_16BGR555 "_*" #pragma aux ConvertMMXp32_16RGB555 "_*" #endif /* WATCOM */ #endif /* X86_ASSEMBLER */ #endif