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libretro: hires blending buffer

This commit is contained in:
kps501 2018-06-08 21:28:12 +00:00 committed by radius
parent 0f4824a16c
commit 951da61b5f
1 changed files with 24 additions and 17 deletions
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41
libretro/libretro.cpp
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@ -46,6 +46,7 @@
char g_rom_dir[1024];
char g_basename[1024];
bool hires_blend = false;
static uint16 *gfx_blend;
retro_log_printf_t log_cb = NULL;
static retro_video_refresh_t video_cb = NULL;
@ -725,6 +726,7 @@ void retro_init(void)
GFX.Pitch = MAX_SNES_WIDTH * sizeof(uint16);
GFX.Screen = (uint16*) calloc(1, GFX.Pitch * MAX_SNES_HEIGHT);
gfx_blend = (uint16*) calloc(1, GFX.Pitch * MAX_SNES_HEIGHT);
S9xGraphicsInit();
S9xInitInputDevices();
@ -989,6 +991,7 @@ void retro_deinit()
S9xUnmapAllControls();
free(GFX.Screen);
free(gfx_blend);
}
@ -1118,27 +1121,31 @@ bool8 S9xDeinitUpdate(int width, int height)
{
#define AVERAGE_565(el0, el1) (((el0) & (el1)) + ((((el0) ^ (el1)) & 0xF7DE) >> 1))
for (register int y = 0; y < height; y++)
{
register uint16 *input = (uint16 *) ((uint8 *) GFX.Screen + y * GFX.Pitch);
register uint16 *output = (uint16 *) ((uint8 *) GFX.Screen + y * GFX.Pitch);
register uint16 l, r;
{
register uint16 *input = (uint16 *) ((uint8 *) GFX.Screen + y * GFX.Pitch);
register uint16 *output = (uint16 *) ((uint8 *) gfx_blend + y * GFX.Pitch);
register uint16 l, r;
l = 0;
for (register int x = 0; x < (width >> 1); x++)
{
r = *input++;
*output++ = AVERAGE_565 (l, r);
l = r;
l = 0;
for (register int x = 0; x < (width >> 1); x++)
{
r = *input++;
*output++ = AVERAGE_565 (l, r);
l = r;
r = *input++;
*output++ = AVERAGE_565 (l, r);
l = r;
}
}
}
r = *input++;
*output++ = AVERAGE_565 (l, r);
l = r;
}
}
video_cb(gfx_blend, width, height, GFX.Pitch);
}
else
{
video_cb(GFX.Screen, width, height, GFX.Pitch);
}
video_cb(GFX.Screen, width, height, GFX.Pitch);
return TRUE;
}