104 lines
3.3 KiB
C++
Executable File
104 lines
3.3 KiB
C++
Executable File
#ifdef SNES_CPP
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const uint8_t SNES::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 SNES::Video::draw_cursor(uint16_t color, int x, int y) {
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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 = (pline_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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uint16_t pixelcolor = (pixel == 1) ? 0 : color;
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if(hires == false) {
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*((uint16_t*)ppu.output + vy * 1024 + 0 + vx) = pixelcolor;
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*((uint16_t*)ppu.output + vy * 1024 + 512 + vx) = pixelcolor;
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} else {
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*((uint16_t*)ppu.output + vy * 1024 + 0 + vx * 2 + 0) = pixelcolor;
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*((uint16_t*)ppu.output + vy * 1024 + 512 + vx * 2 + 0) = pixelcolor;
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*((uint16_t*)ppu.output + vy * 1024 + 0 + vx * 2 + 1) = pixelcolor;
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*((uint16_t*)ppu.output + vy * 1024 + 512 + vx * 2 + 1) = pixelcolor;
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}
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}
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}
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}
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void SNES::Video::update() {
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uint16_t *data = (uint16_t*)ppu.output;
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unsigned width, height;
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switch(snes.input.port[1].device) {
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case SNES::Input::DeviceSuperScope: draw_cursor(0x001f, snes.input.port[1].superscope.x, snes.input.port[1].superscope.y); break;
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case SNES::Input::DeviceJustifiers: draw_cursor(0x02e0, snes.input.port[1].justifier.x2, snes.input.port[1].justifier.y2); //fallthrough
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case SNES::Input::DeviceJustifier: draw_cursor(0x001f, snes.input.port[1].justifier.x1, snes.input.port[1].justifier.y1); break;
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}
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unsigned yoffset = 1; //scanline 0 is always black, skip this line for video output
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if(mode == ModeNTSC && ppu.overscan()) yoffset += 8; //NTSC overscan centers x240 height image
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switch(mode) { default:
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case ModeNTSC: { width = 256; height = 224; } break;
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case ModePAL: { width = 256; height = 239; } break;
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}
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if(frame_hires) width <<= 1;
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if(frame_interlace) height <<= 1;
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snesinterface.video_refresh(
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data + yoffset * 1024,
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/* pitch = */ height <= 240 ? 2048 : 1024,
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/* line[] = */ height <= 240 ? (pline_width + yoffset) : (iline_width + yoffset * 2),
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width, height
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);
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frame_hires = false;
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frame_interlace = false;
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}
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void SNES::Video::scanline() {
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unsigned y = ppu.vcounter();
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if(y >= 240) return;
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unsigned width = (ppu.hires() == false ? 256 : 512);
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pline_width[y] = width;
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iline_width[y * 2 + (int)ppu.field()] = width;
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frame_hires |= ppu.hires();
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frame_interlace |= ppu.interlace();
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}
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void SNES::Video::set_mode(Mode mode_) {
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mode = mode_;
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}
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void SNES::Video::init() {
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for(unsigned i = 0; i < 240; i++) pline_width[i] = 256;
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for(unsigned i = 0; i < 480; i++) iline_width[i] = 256;
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frame_hires = false;
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frame_interlace = false;
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set_mode(ModeNTSC);
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}
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#endif //ifdef SNES_CPP
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