mirror of https://github.com/bsnes-emu/bsnes.git
136 lines
3.6 KiB
C++
Executable File
136 lines
3.6 KiB
C++
Executable File
#ifdef SYSTEM_CPP
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Video video;
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void Video::generate_palette() {
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for(unsigned color = 0; color < (1 << 19); color++) {
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unsigned l = (color >> 15) & 15;
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unsigned b = (color >> 10) & 31;
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unsigned g = (color >> 5) & 31;
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unsigned r = (color >> 0) & 31;
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double L = (1.0 + l) / 16.0;
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if(l == 0) L *= 0.5;
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unsigned R = L * (r << 11 | r << 6 | r << 1 | r >> 4);
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unsigned G = L * (g << 11 | g << 6 | g << 1 | g >> 4);
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unsigned B = L * (b << 11 | b << 6 | b << 1 | b >> 4);
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palette[color] = interface->videoColor(color, R, G, B);
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}
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}
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Video::Video() {
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palette = new unsigned[1 << 19]();
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}
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Video::~Video() {
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delete[] palette;
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}
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//internal
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const uint8_t Video::cursor[15 * 15] = {
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0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,
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0,0,0,0,1,1,2,2,2,1,1,0,0,0,0,
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0,0,0,1,2,2,1,2,1,2,2,1,0,0,0,
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0,0,1,2,1,1,0,1,0,1,1,2,1,0,0,
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0,1,2,1,0,0,0,1,0,0,0,1,2,1,0,
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0,1,2,1,0,0,1,2,1,0,0,1,2,1,0,
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1,2,1,0,0,1,1,2,1,1,0,0,1,2,1,
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1,2,2,1,1,2,2,2,2,2,1,1,2,2,1,
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1,2,1,0,0,1,1,2,1,1,0,0,1,2,1,
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0,1,2,1,0,0,1,2,1,0,0,1,2,1,0,
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0,1,2,1,0,0,0,1,0,0,0,1,2,1,0,
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0,0,1,2,1,1,0,1,0,1,1,2,1,0,0,
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0,0,0,1,2,2,1,2,1,2,2,1,0,0,0,
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0,0,0,0,1,1,2,2,2,1,1,0,0,0,0,
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0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,
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};
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void Video::draw_cursor(uint16_t color, int x, int y) {
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uint32_t *data = (uint32_t*)ppu.output;
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if(ppu.interlace() && ppu.field()) data += 512;
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for(int cy = 0; cy < 15; cy++) {
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int vy = y + cy - 7;
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if(vy <= 0 || vy >= 240) continue; //do not draw offscreen
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bool hires = (line_width[vy] == 512);
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for(int cx = 0; cx < 15; cx++) {
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int vx = x + cx - 7;
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if(vx < 0 || vx >= 256) continue; //do not draw offscreen
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uint8_t pixel = cursor[cy * 15 + cx];
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if(pixel == 0) continue;
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uint32_t pixelcolor = (15 << 15) | ((pixel == 1) ? 0 : color);
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if(hires == false) {
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*((uint32_t*)data + vy * 1024 + vx) = palette[pixelcolor];
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} else {
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*((uint32_t*)data + vy * 1024 + vx * 2 + 0) = palette[pixelcolor];
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*((uint32_t*)data + vy * 1024 + vx * 2 + 1) = palette[pixelcolor];
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}
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}
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}
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}
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void Video::update() {
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switch(config.controller_port2) {
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case Input::Device::SuperScope:
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if(dynamic_cast<SuperScope*>(input.port2)) {
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SuperScope &device = (SuperScope&)*input.port2;
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draw_cursor(0x7c00, device.x, device.y);
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}
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break;
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case Input::Device::Justifier:
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case Input::Device::Justifiers:
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if(dynamic_cast<Justifier*>(input.port2)) {
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Justifier &device = (Justifier&)*input.port2;
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draw_cursor(0x001f, device.player1.x, device.player1.y);
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if(device.chained == false) break;
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draw_cursor(0x02e0, device.player2.x, device.player2.y);
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}
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break;
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}
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uint32_t *data = (uint32_t*)ppu.output;
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if(ppu.interlace() && ppu.field()) data += 512;
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if(hires) {
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//normalize line widths
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for(unsigned y = 0; y < 240; y++) {
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if(line_width[y] == 512) continue;
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uint32_t *buffer = data + y * 1024;
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for(signed x = 255; x >= 0; x--) {
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buffer[(x * 2) + 0] = buffer[(x * 2) + 1] = buffer[x];
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}
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}
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}
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//overscan: when disabled, shift image down (by scrolling video buffer up) to center image onscreen
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//(memory before ppu.output is filled with black scanlines)
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interface->videoRefresh(
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ppu.output - (ppu.overscan() ? 0 : 7 * 1024),
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4 * (1024 >> ppu.interlace()),
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256 << hires,
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240 << ppu.interlace()
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);
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hires = false;
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}
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void Video::scanline() {
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unsigned y = cpu.vcounter();
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if(y >= 240) return;
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hires |= ppu.hires();
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unsigned width = (ppu.hires() == false ? 256 : 512);
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line_width[y] = width;
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}
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void Video::init() {
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hires = false;
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for(auto &n : line_width) n = 256;
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}
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#endif
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