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atimach64gx: Handle all pixel formats.

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This commit is contained in:
joevt 2024-02-28 01:52:12 -08:00 committed by dingusdev
parent ab647ec0eb
commit a190d5cbd9
1 changed files with 31 additions and 11 deletions
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42
devices/video/atimach64gx.cpp
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@ -526,6 +526,12 @@ void AtiMach64Gx::crtc_update()
need_recalc = true;
}
int new_pixel_format = this->dac_regs[Rgb514::PIX_FORMAT];
if (new_pixel_format != this->pixel_format) {
this->pixel_format = new_pixel_format;
need_recalc = true;
}
// pixel clock = source_freq / post_div
int m = 8 >> (this->dac_regs[Rgb514::F0_M0] >> 6);
int vco_div = (this->dac_regs[Rgb514::F0_M0] & 0x3F) + 65;
@ -542,15 +548,35 @@ void AtiMach64Gx::crtc_update()
// calculate display refresh rate
this->refresh_rate = this->pixel_clock / this->hori_total / this->vert_total;
// specify framebuffer converter
switch (this->pixel_depth) {
case 8:
// set up frame buffer converter
switch (this->pixel_format) {
case 2:
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_4bpp_indexed(dst_buf, dst_pitch);
};
break;
case 3:
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_8bpp_indexed(dst_buf, dst_pitch);
};
break;
case 4:
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_15bpp_BE(dst_buf, dst_pitch);
};
break;
case 5:
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_24bpp(dst_buf, dst_pitch);
};
break;
case 6:
this->convert_fb_cb = [this](uint8_t *dst_buf, int dst_pitch) {
this->convert_frame_32bpp_BE(dst_buf, dst_pitch);
};
break;
default:
ABORT_F("%s: unsupported pixel depth %d", this->name.c_str(), this->pixel_depth);
LOG_F(ERROR, "%s: unsupported pixel format %d", this->name.c_str(), this->pixel_format);
}
this->stop_refresh_task();
@ -617,13 +643,7 @@ void AtiMach64Gx::rgb514_write_ind_reg(uint8_t reg_addr, uint8_t value)
}
break;
case Rgb514::PIX_FORMAT:
if (value == 3) {
this->pixel_depth = 8;
// HACK: not the best place for enabling display output!
this->crtc_update();
} else {
ABORT_F("RGB514: unimplemented pixel format %d", value);
}
this->crtc_update();
break;
}
}