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libretro: empty srm prevention hack

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This commit is contained in:
notaz 2013-10-13 18:46:48 +03:00
parent 74e770b1ec
commit 0fd6751db8
1 changed files with 12 additions and 1 deletions
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13
platform/libretro.c
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@ -741,14 +741,25 @@ void *retro_get_memory_data(unsigned id)
size_t retro_get_memory_size(unsigned id)
{
unsigned int i;
int sum;
if (id != RETRO_MEMORY_SAVE_RAM)
return 0;
if (PicoAHW & PAHW_MCD)
// bram
return 0x2000;
else
if (Pico.m.frame_count == 0)
return SRam.size;
// if game doesn't write to sram, don't report it to
// libretro so that RA doesn't write out zeroed .srm
for (i = 0, sum = 0; i < SRam.size; i++)
sum |= SRam.data[i];
return (sum != 0) ? SRam.size : 0;
}
void retro_reset(void)