Raimon Zamora
ebf68fdd90
- [NEW] Les coses de la ULA ara estàn en el modul zx_ula - [NEW] zx_screen ja agafa el color del borde de la ULA
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
#include "zx_screen.h"
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#include "z80.h"
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#include "zx_ula.h"
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#include <SDL2/SDL.h>
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namespace zxscreen
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{
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uint32_t palette[16] = {
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0x000000, 0x000080, 0x800000, 0x800080, 0x008000, 0x008080, 0x808000, 0x808080,
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0x000000, 0x0000FF, 0xFF0000, 0xFF00FF, 0x00FF00, 0x00FFFF, 0xFFFF00, 0xFFFFFF
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};
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SDL_Window *win = nullptr;
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SDL_Renderer *ren = nullptr;
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SDL_Texture *tex = nullptr;
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void show()
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{
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if (win) return;
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win = SDL_CreateWindow("ZX Spectrum Screen", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 352, 288, SDL_WINDOW_RESIZABLE);
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ren = SDL_CreateRenderer(win, -1, 0);
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tex = SDL_CreateTexture(ren, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, 352, 288);
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refresh();
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}
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void refresh()
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{
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const uint8_t* memory = z80::getMem();
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const uint8_t border_color = zx_ula::get_border_color();
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//memory+=0x4000;
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Uint32* pixels;
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int pitch;
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SDL_LockTexture(tex, NULL, (void**)&pixels, &pitch);
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// Upper border
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for (int i=0; i<352*48;++i) *(pixels++) = palette[border_color];
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// scanlines
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for (uint8_t y=0; y<192; ++y)
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{
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// Left border
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for (int j=0;j<48;++j) *(pixels++) = palette[border_color];
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// Actual screen
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for (uint8_t x=0;x<32;++x)
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{
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uint8_t color = memory[0x5800 + x + (y>>3)*32];
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uint16_t address = 0x4000 | (x&0x1f) | ((y&0x7)<<8) | ((y&0x38)<<2) | ((y&0xc0)<<5);
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uint8_t block = memory[address];
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for (int i=0;i<8;++i)
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{
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*(pixels++)=(block&0x80) ? palette[color&0x7] : palette[(color>>3)&0x7];
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block = block<<1;
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}
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}
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// Right border
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for (int j=0;j<48;++j) *(pixels++) = palette[border_color];
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}
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// Lower border
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for (int i=0; i<352*48;++i) *(pixels++)=palette[border_color];
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SDL_UnlockTexture(tex);
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SDL_RenderCopy(ren, tex, NULL, NULL);
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SDL_RenderPresent(ren);
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}
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}
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