mirror of https://github.com/JorjBauer/aiie.git
333 lines
11 KiB
C++
333 lines
11 KiB
C++
#include <ctype.h> // isgraph
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#include "sdl-display.h"
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#include "images.h"
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#include "globals.h"
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#include "applevm.h"
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#include "apple/appleui.h"
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// FIXME should be able to omit this include and rely on the xterns, which
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// would prove it's linking properly
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#include "apple/font.h"
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extern const unsigned char ucase_glyphs[512];
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extern const unsigned char lcase_glyphs[256];
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extern const unsigned char mousetext_glyphs[256];
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extern const unsigned char interface_glyphs[256];
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#define SCREENINSET_X (18*SDLDISPLAY_SCALE)
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#define SCREENINSET_Y (13*SDLDISPLAY_SCALE)
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// RGB map of each of the lowres colors
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const uint8_t loresPixelColors[16][3] = { { 0, 0, 0 }, // black
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{ 0xAC, 0x12, 0x4C }, // magenta
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{ 0x00, 0x07, 0x83 }, // dark blue
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{ 0xAA, 0x1A, 0xD1 }, // purple
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{ 0x00, 0x83, 0x2F }, // dark green
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{ 0x9F, 0x97, 0x7E }, // drak grey
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{ 0x00, 0x8A, 0xB5 }, // medium blue
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{ 0x9F, 0x9E, 0xFF }, // light blue
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{ 0x7A, 0x5F, 0x00 }, // brown
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{ 0xFF, 0x72, 0x47 }, // orange
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{ 0x78, 0x68, 0x7F }, // light gray
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{ 0xFF, 0x7A, 0xCF }, // pink
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{ 0x6F, 0xE6, 0x2C }, // green
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{ 0xFF, 0xF6, 0x7B }, // yellow
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{ 0x6C, 0xEE, 0xB2 }, // aqua
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{ 0xFF, 0xFF, 0xFF } // white
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};
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#define color16To32(x) ( (((x) & 0xF800) << 8) | (((x) & 0x07E0) << 5) | (((x) & 0x001F)<<3) )
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#define packColor32(x) ( (x[0] << 16) | (x[1] << 8) | (x[2]) )
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// FIXME this blend could be optimized - and it's a dumb blend that
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// just averages RGB values individually, rather than trying to find a
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// sane blend of 2 pixels. Needs thought.
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#define blendPackedColor(x,y) ( (((x) & 0xFF0000) + ((y) & 0xFF0000) / 2) + (((x) & 0x00FF00) + ((y) & 0x00FF00)) / 2 + (((x) & 0x0000FF) + ((y) & 0x0000FF)) / 2 )
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SDLDisplay::SDLDisplay()
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{
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memset(videoBuffer, 0, sizeof(videoBuffer));
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// FIXME: abstract constants
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screen = SDL_CreateWindow("Aiie!",
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SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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SDLDISPLAY_WIDTH, SDLDISPLAY_HEIGHT,
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SDL_WINDOW_SHOWN);
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// SDL_RENDERER_SOFTWARE because, at least on my Mac, this has some
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// serious issues with hardware accelerated drawing (flashing and crashing).
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renderer = SDL_CreateRenderer(screen, -1, SDL_RENDERER_SOFTWARE);
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SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255); // set to white
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SDL_RenderClear(renderer); // clear it to the selected color
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SDL_RenderPresent(renderer); // perform the render
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}
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SDLDisplay::~SDLDisplay()
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{
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SDL_Quit();
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}
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void SDLDisplay::flush()
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{
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blit();
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SDL_RenderPresent(renderer);
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}
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void SDLDisplay::redraw()
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{
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// primarily for the device, where it's in and out of the
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// bios. Draws the background image.
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g_ui->drawStaticUIElement(UIeOverlay);
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if (g_vm && g_ui) {
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// determine whether or not a disk is inserted & redraw each drive
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g_ui->drawOnOffUIElement(UIeDisk1_state, ((AppleVM *)g_vm)->DiskName(0)[0] == '\0');
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g_ui->drawOnOffUIElement(UIeDisk2_state, ((AppleVM *)g_vm)->DiskName(1)[0] == '\0');
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}
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}
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// drawImageOfSizeAt will horizontally scale out the image b/c the
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// images themselves aren't aware of the double resolution. This is an
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// inconsistency that probably should be addressed. FIXME?
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void SDLDisplay::drawImageOfSizeAt(const uint8_t *img,
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uint16_t sizex, uint8_t sizey,
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uint16_t wherex, uint8_t wherey)
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{
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for (uint8_t y=0; y<sizey; y++) {
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for (uint16_t x=0; x<sizex; x++) {
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const uint8_t *p = &img[(y * sizex + x)*3];
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p = &img[(y * sizex + x)*3];
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drawPixel((x+wherex)*SDLDISPLAY_SCALE, y+wherey, p[0], p[1], p[2]);
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drawPixel((x+wherex)*SDLDISPLAY_SCALE+1, y+wherey, p[0], p[1], p[2]);
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}
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}
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}
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void SDLDisplay::blit()
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{
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// Whole-screen blit
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AiieRect r = { 0,0,191,279 };
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blit(r);
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}
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// Blit the videoBuffer to the display device, in the rect given
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void SDLDisplay::blit(AiieRect r)
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{
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// The dimensions here are the dimensions of the variable screen --
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// not the border. We don't support updating the border *except* by
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// drawing directly to the screen device...
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for (uint16_t y=r.top*SDLDISPLAY_SCALE; y<r.bottom*SDLDISPLAY_SCALE; y++) {
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for (uint16_t x=r.left*SDLDISPLAY_SCALE; x<r.right*SDLDISPLAY_SCALE; x++) {
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uint32_t colorIdx = videoBuffer[y][x];
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uint8_t r, g, b;
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r = (colorIdx & 0xFF0000) >> 16;
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g = (colorIdx & 0x00FF00) >> 8;
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b = (colorIdx & 0x0000FF);
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if (g_displayType == m_monochrome) {
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float fv = 0.2125 * r + 0.7154 * g + 0.0721 * b;
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r = b = 0;
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g = fv;
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}
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else if (g_displayType == m_blackAndWhite) {
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// Used to reduce to B&W in this driver, but now it's up in the apple display
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// float fv = 0.2125 * r + 0.7154 * g + 0.0721 * b;
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// r = g = b = fv;
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}
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SDL_SetRenderDrawColor(renderer, r, g, b, 255);
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SDL_RenderDrawPoint(renderer, x+SCREENINSET_X, y+SCREENINSET_Y);
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}
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}
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if (overlayMessage[0]) {
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drawString(M_SELECTDISABLED, 1, 240 - 16 - 12, overlayMessage);
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}
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SDL_RenderPresent(renderer);
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}
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inline void putpixel(SDL_Renderer *renderer, int x, int y, uint8_t r, uint8_t g, uint8_t b)
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{
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SDL_SetRenderDrawColor(renderer, r, g, b, 255);
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SDL_RenderDrawPoint(renderer, x, y);
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}
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void SDLDisplay::drawUIPixel(uint16_t x, uint16_t y, uint16_t color)
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{
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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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videoBuffer[y*SDLDISPLAY_SCALE+yoff][x*SDLDISPLAY_SCALE+xoff] = color16To32(color);
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}
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}
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}
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void SDLDisplay::drawPixel(uint16_t x, uint16_t y, uint16_t color)
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{
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uint8_t
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r = (color & 0xF800) >> 8,
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g = (color & 0x7E0) >> 3,
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b = (color & 0x1F) << 3;
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// Pixel-doubling vertically and horizontally, based on scale
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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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putpixel(renderer, x+xoff, yoff+y*SDLDISPLAY_SCALE, r, g, b);
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}
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}
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}
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void SDLDisplay::drawPixel(uint16_t x, uint16_t y, uint8_t r, uint8_t g, uint8_t b)
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{
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// Pixel-doubling horizontally and vertically, based on scale
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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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putpixel(renderer, x+xoff, yoff+y*SDLDISPLAY_SCALE, r, g, b);
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}
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}
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}
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void SDLDisplay::drawCharacter(uint8_t mode, uint16_t x, uint8_t y, char c)
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{
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int8_t xsize = 8,
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ysize = 0x07;
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uint16_t offPixel, onPixel;
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switch (mode) {
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case M_NORMAL:
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onPixel = 0xFFFF;
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offPixel = 0x0010;
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break;
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case M_SELECTED:
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onPixel = 0x0000;
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offPixel = 0xFFFF;
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break;
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case M_DISABLED:
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default:
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onPixel = 0x7BEF;
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offPixel = 0x0000;
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break;
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case M_SELECTDISABLED:
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onPixel = 0x7BEF;
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offPixel = 0xFFE0;
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break;
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case M_PLAIN:
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onPixel = 0xFFFF;
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offPixel = 0x0000;
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break;
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}
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// This does not scale when drawing, because drawPixel scales.
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const unsigned char *ch = asciiToAppleGlyph(c);
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for (int8_t y_off = 0; y_off <= ysize; y_off++) {
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for (int8_t x_off = 0; x_off <= xsize; x_off++) {
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if (*ch & (1 << (x_off))) {
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drawUIPixel(x + x_off, y + y_off, onPixel);
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} else {
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drawUIPixel(x + x_off, y + y_off, offPixel);
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}
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}
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ch++;
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}
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}
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void SDLDisplay::drawString(uint8_t mode, uint16_t x, uint8_t y, const char *str)
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{
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int8_t xsize = 8; // width of a char in this font
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for (int8_t i=0; i<strlen(str); i++) {
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drawCharacter(mode, x, y, str[i]);
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x += xsize; // fixme: any inter-char spacing?
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if (x >= 320) break; // FIXME constant - and pre-scaling, b/c that's in drawCharacter
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}
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}
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void SDLDisplay::clrScr(uint8_t coloridx)
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{
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const uint8_t *rgbptr = &loresPixelColors[0][0];
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if (coloridx <= 16)
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rgbptr = loresPixelColors[coloridx];
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for (uint16_t y=0; y<SDLDISPLAY_HEIGHT; y++) {
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for (uint16_t x=0; x<SDLDISPLAY_WIDTH; x++) {
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videoBuffer[y][x] = packColor32(loresPixelColors[coloridx]);
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}
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}
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SDL_SetRenderDrawColor(renderer, rgbptr[0], rgbptr[1], rgbptr[2], 255); // select a color
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SDL_RenderClear(renderer); // clear it to the selected color
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SDL_RenderPresent(renderer); // perform the render
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}
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// This was called with the expectation that it can draw every one of
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// the 560x192 pixels that could be addressed. If TEENSYDISPLAY_SCALE
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// is 1, then we have half of that horizontal resolution - so we need
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// to be creative and blend neighboring pixels together.
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void SDLDisplay::cachePixel(uint16_t x, uint16_t y, uint8_t color)
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{
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#if SDLDISPLAY_SCALE == 1
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// This is the case where we need to blend together neighboring
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// pixels, because we don't have enough physical screen resoultion.
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if (x&1) {
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uint32_t origColor = videoBuffer[y][(x>>1)*SDLDISPLAY_SCALE];
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uint32_t newColor = packColor32(loresPixelColors[color]);
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if (g_displayType == m_blackAndWhite) {
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// FIXME: the two possible sets here of 'origColor && newColor' or 'origColor||newColor'
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// work well for black-on-white and white-on-black. But neither is good in the other.
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cacheDoubleWidePixel(x>>1,y,(uint32_t)((origColor && newColor) ? 0xFFFFFF : 0x000000));
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} else {
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cacheDoubleWidePixel(x>>1,y,(uint32_t)blendPackedColor(origColor, newColor));
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}
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// Else if it's black, we leave whatever was in the other pixel.
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} else {
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// The even pixels always draw.
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cacheDoubleWidePixel(x>>1,y,color);
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}
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#else
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// we have enough resolution to show all the pixels, so just do it
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x = (x * SDLDISPLAY_SCALE)/2;
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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)][x+xoff] = packColor32(loresPixelColors[color]);
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}
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}
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#endif
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}
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// "DoubleWide" means "please double the X because I'm in low-res width mode"
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void SDLDisplay::cacheDoubleWidePixel(uint16_t x, uint16_t y, uint8_t color)
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{
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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)][x*SDLDISPLAY_SCALE+xoff] = packColor32(loresPixelColors[color]);
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}
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}
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}
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void SDLDisplay::cacheDoubleWidePixel(uint16_t x, uint16_t y, uint32_t packedColor)
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{
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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)][x*SDLDISPLAY_SCALE+xoff] = packedColor;
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}
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}
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}
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void SDLDisplay::cache2DoubleWidePixels(uint16_t x, uint16_t y, uint8_t colorB, uint8_t colorA)
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{
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for (int yoff=0; yoff<SDLDISPLAY_SCALE; yoff++) {
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for (int xoff=0; xoff<SDLDISPLAY_SCALE; xoff++) {
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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)][x*SDLDISPLAY_SCALE+2*xoff] = packColor32(loresPixelColors[colorA]);
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videoBuffer[(y*SDLDISPLAY_SCALE+yoff)][x*SDLDISPLAY_SCALE+1+2*xoff] = packColor32(loresPixelColors[colorB]);
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}
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}
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}
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