AuroraMiddleware/AuroraOpenALSoft
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Check for SSE2 and set the denormals-are-zero bit for mixing if available

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This commit is contained in:
Chris Robinson 2013-05-22 16:59:20 -07:00
parent b80efeb87d
commit 38a9e642df
5 changed files with 22 additions and 8 deletions
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4
Alc/ALc.c
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@ -845,7 +845,7 @@ static void alc_initconfig(void)
capfilter = 0;
#ifdef HAVE_SSE
capfilter |= CPU_CAP_SSE;
capfilter |= CPU_CAP_SSE | CPU_CAP_SSE2;
#endif
#ifdef HAVE_NEON
capfilter |= CPU_CAP_NEON;
@ -872,6 +872,8 @@ static void alc_initconfig(void)
len = (next ? ((size_t)(next-str)) : strlen(str));
if(strncasecmp(str, "sse", len) == 0)
capfilter &= ~CPU_CAP_SSE;
else if(strncasecmp(str, "sse2", len) == 0)
capfilter &= ~CPU_CAP_SSE2;
else if(strncasecmp(str, "neon", len) == 0)
capfilter &= ~CPU_CAP_NEON;
else

17
Alc/helpers.c
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@ -106,7 +106,11 @@ void FillCPUCaps(ALuint capfilter)
{
#ifdef bit_SSE
if((cpuinf[0].regs[3]&bit_SSE))
{
caps |= CPU_CAP_SSE;
if((cpuinf[0].regs[3]&bit_SSE2))
caps |= CPU_CAP_SSE2;
}
#endif
}
}
@ -119,7 +123,11 @@ void FillCPUCaps(ALuint capfilter)
else
{
if(IsProcessorFeaturePresent(PF_XMMI_INSTRUCTIONS_AVAILABLE))
{
caps |= CPU_CAP_SSE;
if(IsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE))
caps |= CPU_CAP_SSE2;
}
}
#endif
#ifdef HAVE_NEON
@ -127,9 +135,10 @@ void FillCPUCaps(ALuint capfilter)
caps |= CPU_CAP_NEON;
#endif
TRACE("Got caps:%s%s%s\n", ((caps&CPU_CAP_SSE)?((capfilter&CPU_CAP_SSE)?" SSE":" (SSE)"):""),
((caps&CPU_CAP_NEON)?((capfilter&CPU_CAP_NEON)?" Neon":" (Neon)"):""),
((!caps)?" -none-":""));
TRACE("Got caps:%s%s%s%s\n", ((caps&CPU_CAP_SSE)?((capfilter&CPU_CAP_SSE)?" SSE":" (SSE)"):""),
((caps&CPU_CAP_SSE)?((capfilter&CPU_CAP_SSE2)?" SSE2":" (SSE2)"):""),
((caps&CPU_CAP_NEON)?((capfilter&CPU_CAP_NEON)?" Neon":" (Neon)"):""),
((!caps)?" -none-":""));
CPUCapFlags = caps & capfilter;
}
@ -207,6 +216,8 @@ void SetMixerFPUMode(FPUCtl *ctl)
ctl->sse_state = sseState;
sseState |= 0x6000; /* set round-to-zero */
sseState |= 0x8000; /* set flush-to-zero */
if((CPUCapFlags&CPU_CAP_SSE2))
sseState |= 0x0040; /* set denormals-are-zero */
__asm__ __volatile__("ldmxcsr %0" : : "m" (*&sseState));
}
#endif

4
CMakeLists.txt
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@ -26,10 +26,10 @@ PROJECT(OpenAL C)
SET(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE)
OPTION(ALSOFT_CPUEXT_SSE "Check for SSE CPU extensions" ON)
OPTION(ALSOFT_CPUEXT_SSE "Check for SSE/SSE2 CPU extensions" ON)
OPTION(ALSOFT_CPUEXT_NEON "Check for ARM Neon CPU extensions" ON)
OPTION(ALSOFT_REQUIRE_SSE "Require SSE CPU extensions" OFF)
OPTION(ALSOFT_REQUIRE_SSE "Require SSE/SSE2 CPU extensions" OFF)
OPTION(ALSOFT_REQUIRE_NEON "Require ARM Neon CPU extensions" OFF)

3
OpenAL32/Include/alMain.h
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@ -837,7 +837,8 @@ extern ALint RTPrioLevel;
extern ALuint CPUCapFlags;
enum {
CPU_CAP_SSE = 1<<0,
CPU_CAP_NEON = 1<<1,
CPU_CAP_SSE2 = 1<<1,
CPU_CAP_NEON = 1<<2,
};
void FillCPUCaps(ALuint capfilter);

2
alsoftrc.sample
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@ -14,7 +14,7 @@
## disable-cpu-exts:
# Disables use of the listed CPU extensions. Certain methods may utilize CPU
# extensions when detected, and this option is useful for preventing those
# extensions from being used. The available extensions are: sse, neon.
# extensions from being used. The available extensions are: sse, sse2, neon.
# Specifying 'all' disables use of all extensions.
#disable-cpu-exts =