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Gamma correction support for Mach64VT2 (#6294)

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Cacodemon345
2025-10-08 13:22:36 +06:00
committed by GitHub
parent 501bc4d45f
commit 0b487422b2
1 changed files with 29 additions and 0 deletions
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29
src/video/vid_ati_mach64.c
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@@ -543,6 +543,7 @@ mach64_recalctimings(svga_t *svga)
svga->split = 0xffffff;
svga->vblankstart = svga->dispend;
svga->rowcount = mach64->crtc_gen_cntl & 1;
svga->lut_map = (mach64->type >= MACH64_VT2);
svga->rowoffset <<= 1;
if (mach64->type == MACH64_GX)
@@ -592,6 +593,7 @@ mach64_recalctimings(svga_t *svga)
svga->vram_display_mask = mach64->vram_mask;
} else {
svga->vram_display_mask = (mach64->regs[0x36] & 0x01) ? mach64->vram_mask : 0x3ffff;
svga->lut_map = 0;
}
}
@@ -4028,6 +4030,29 @@ mach64_readl(uint32_t addr, void *priv)
return ret;
}
uint32_t
mach64_conv_16to32(svga_t* svga, uint16_t color, uint8_t bpp)
{
uint32_t ret = 0x00000000;
if (svga->lut_map) {
if (bpp == 15) {
uint8_t b = getcolr(svga->pallook[(color & 0x1f) << 3]);
uint8_t g = getcolg(svga->pallook[(color & 0x3e0) >> 2]);
uint8_t r = getcolb(svga->pallook[(color & 0x7c00) >> 7]);
ret = (video_15to32[color] & 0xFF000000) | makecol(r, g, b);
} else {
uint8_t b = getcolr(svga->pallook[(color & 0x1f) << 3]);
uint8_t g = getcolg(svga->pallook[(color & 0x7e0) >> 3]);
uint8_t r = getcolb(svga->pallook[(color & 0xf800) >> 8]);
ret = (video_16to32[color] & 0xFF000000) | makecol(r, g, b);
}
} else
ret = (bpp == 15) ? video_15to32[color] : video_16to32[color];
return ret;
}
void
mach64_int_hwcursor_draw(svga_t *svga, int displine)
{
@@ -4879,6 +4904,10 @@ mach64_common_init(const device_t *info)
svga->clock_gen = device_add(&ics2595_device);
if (mach64->type >= MACH64_VT2) {
svga->conv_16to32 = mach64_conv_16to32;
}
mach64->dst_cntl = 3;
mach64->thread_run = 1;