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Date: Tue, 30 Mar 2004 21:26:47 -0600

Browse source 
From: Tyler Montbriand
Subject: [SDL] Opteron MMX patches for SDL_blit.c and SDL_blit_A.c

The inline MMX assembly in SDL_blit.c and SDL_blit_A.c compiles and runs fine
unmodified under AMD Opteron.  The inline assembly in SDL_yuv_mmx.c and
SDL_blit_N.c unfortunately isn't directly compatible.

I've included diffs from SDL_blit.c and SDL_blit_A.c that allow the MMX
assembly to be compiled when USE_ASMBLIT, __x86_64__, and __GNUC__ are all
defined.  All I had to modify was typedefs, the inline assembly itself wasn't
touched.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40881
This commit is contained in:
Sam Lantinga 2004-04-11 19:47:28 +00:00
parent 4007c1de67
commit b078fb1950
3 changed files with 25 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

20
src/video/SDL_blit_A.c
View file

@ -31,7 +31,11 @@ static char rcsid =
#include "SDL_video.h"
#include "SDL_blit.h"
#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
#if (defined(i386) || defined(__x86_64__)) && defined(__GNUC__) && defined(USE_ASMBLIT)
#define MMX_ASMBLIT
#endif
#ifdef MMX_ASMBLIT
/* Function to check the CPU flags */
#include "SDL_cpuinfo.h"
#include "mmx.h"
@ -201,7 +205,7 @@ static void BlitNto1SurfaceAlphaKey(SDL_BlitInfo *info)
}
}
#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
#ifdef MMX_ASMBLIT
/* fast RGB888->(A)RGB888 blending with surface alpha=128 special case */
static void BlitRGBtoRGBSurfaceAlpha128MMX(SDL_BlitInfo *info)
{
@ -557,7 +561,7 @@ static void BlitRGBtoRGBPixelAlpha(SDL_BlitInfo *info)
}
}
#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
#ifdef MMX_ASMBLIT
/* fast (as in MMX with prefetch) ARGB888->(A)RGB888 blending with pixel alpha */
inline static void BlitRGBtoRGBPixelAlphaMMX3DNOW(SDL_BlitInfo *info)
{
@ -759,7 +763,7 @@ static void Blit16to16SurfaceAlpha128(SDL_BlitInfo *info, Uint16 mask)
}
}
#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
#ifdef MMX_ASMBLIT
/* fast RGB565->RGB565 blending with surface alpha */
static void Blit565to565SurfaceAlphaMMX(SDL_BlitInfo *info)
{
@ -1379,7 +1383,7 @@ SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index)
if(surface->map->identity) {
if(df->Gmask == 0x7e0)
{
#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
#ifdef MMX_ASMBLIT
if(SDL_HasMMX())
return Blit565to565SurfaceAlphaMMX;
else
@ -1388,7 +1392,7 @@ SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index)
}
else if(df->Gmask == 0x3e0)
{
#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
#ifdef MMX_ASMBLIT
if(SDL_HasMMX())
return Blit555to555SurfaceAlphaMMX;
else
@ -1405,7 +1409,7 @@ SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index)
&& (sf->Rmask | sf->Gmask | sf->Bmask) == 0xffffff
&& sf->BytesPerPixel == 4)
{
#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
#ifdef MMX_ASMBLIT
if(SDL_HasMMX())
return BlitRGBtoRGBSurfaceAlphaMMX;
else
@ -1445,7 +1449,7 @@ SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int blit_index)
&& sf->Bmask == df->Bmask
&& sf->BytesPerPixel == 4)
{
#if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
#ifdef MMX_ASMBLIT
if(SDL_Has3DNow())
return BlitRGBtoRGBPixelAlphaMMX3DNOW;
else