mirror of
https://github.com/devinacker/bsnes-plus.git
synced 2025-04-02 10:52:46 -04:00
109 lines
2.6 KiB
C++
109 lines
2.6 KiB
C++
#ifdef PPU_CPP
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inline uint16 PPU::get_palette(uint8 index) {
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const unsigned addr = index << 1;
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return memory::cgram[addr] + (memory::cgram[addr + 1] << 8);
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}
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//p = 00000bgr <palette data>
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//t = BBGGGRRR <tilemap data>
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//r = 0BBb00GGGg0RRRr0 <return data>
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inline uint16 PPU::get_direct_color(uint8 p, uint8 t) {
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return ((t & 7) << 2) | ((p & 1) << 1) |
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(((t >> 3) & 7) << 7) | (((p >> 1) & 1) << 6) |
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((t >> 6) << 13) | ((p >> 2) << 12);
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}
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inline uint16 PPU::get_pixel_normal(uint32 x) {
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pixel_t &p = pixel_cache[x];
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uint16 src_main, src_sub;
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uint8 bg_sub;
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src_main = p.src_main;
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if(!regs.addsub_mode) {
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bg_sub = BACK;
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src_sub = regs.color_rgb;
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} else {
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bg_sub = p.bg_sub;
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src_sub = p.src_sub;
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}
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if(!window[COL].main[x]) {
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if(!window[COL].sub[x]) {
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return 0x0000;
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}
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src_main = 0x0000;
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}
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if(!p.ce_main && regs.color_enabled[p.bg_main] && window[COL].sub[x]) {
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bool halve = false;
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if(regs.color_halve && window[COL].main[x]) {
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if(regs.addsub_mode && bg_sub == BACK);
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else {
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halve = true;
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}
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}
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return addsub(src_main, src_sub, halve);
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}
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return src_main;
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}
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inline uint16 PPU::get_pixel_swap(uint32 x) {
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pixel_t &p = pixel_cache[x];
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uint16 src_main, src_sub;
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uint8 bg_sub;
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src_main = p.src_sub;
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if(!regs.addsub_mode) {
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bg_sub = BACK;
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src_sub = regs.color_rgb;
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} else {
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bg_sub = p.bg_main;
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src_sub = p.src_main;
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}
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if(!window[COL].main[x]) {
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if(!window[COL].sub[x]) {
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return 0x0000;
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}
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src_main = 0x0000;
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}
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if(!p.ce_sub && regs.color_enabled[p.bg_sub] && window[COL].sub[x]) {
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bool halve = false;
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if(regs.color_halve && window[COL].main[x]) {
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if(regs.addsub_mode && bg_sub == BACK);
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else {
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halve = true;
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}
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}
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return addsub(src_main, src_sub, halve);
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}
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return src_main;
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}
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inline void PPU::render_line_output() {
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uint16 *ptr = (uint16*)output + (line * 1024) + ((interlace() && field()) ? 512 : 0);
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uint16 *luma = light_table[regs.display_brightness];
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if(!regs.pseudo_hires && regs.bg_mode != 5 && regs.bg_mode != 6) {
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for(unsigned x = 0; x < 256; x++) {
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*ptr++ = luma[get_pixel_normal(x)];
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}
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} else {
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for(unsigned x = 0, prev = 0; x < 256; x++) {
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*ptr++ = luma[get_pixel_swap(x)];
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*ptr++ = luma[get_pixel_normal(x)];
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}
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}
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}
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inline void PPU::render_line_clear() {
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uint16 *ptr = (uint16*)output + (line * 1024) + ((interlace() && field()) ? 512 : 0);
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uint16 width = (!regs.pseudo_hires && regs.bg_mode != 5 && regs.bg_mode != 6) ? 256 : 512;
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memset(ptr, 0, width * 2 * sizeof(uint16));
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}
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#endif
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