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Hello world, in rendered text; use nearest pixel sampling
The scale change removes some blurriness that we saw when copying pixels from the bitmap font into the renderer.
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parent
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11
src/apple2.c
11
src/apple2.c
@ -86,10 +86,21 @@ apple2_set_color(apple2 *mach, int mode)
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// correct color interpretation
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}
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#define SHOW(ch) \
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vm_bitfont_render(mach->sysfont, mach->screen, &area, ch); \
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area.x += 7
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void
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apple2_run_loop(apple2 *mach)
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{
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SDL_Rect area;
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while (vm_screen_active(mach->screen)) {
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area.x = 50;
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area.y = 50;
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SHOW('H'); SHOW('e'); SHOW('l'); SHOW('l'); SHOW('o'); SHOW(' ');
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SHOW('w'); SHOW('o'); SHOW('r'); SHOW('l'); SHOW('d'); SHOW('!');
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vm_screen_refresh(mach->screen);
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}
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}
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@ -98,10 +98,17 @@ vm_bitfont_render(vm_bitfont *font,
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src.w = font->width;
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src.h = font->height;
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// The source and destination width/height must match. This might be
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// a faulty assumption down the road; for now, it holds.
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dest->w = src.w;
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dest->h = src.h;
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// Get the spot in the bitmap where the glyph is found
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vm_bitfont_offset(font, ch, &src.x, &src.y);
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if (SDL_RenderCopy(screen->render, font->texture, dest, &src) < 0) {
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log_critical("src.x = %d, src.y = %d", src.x, src.y);
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if (SDL_RenderCopy(screen->render, font->texture, &src, dest) < 0) {
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log_critical("Failed to render glyph: %s", SDL_GetError());
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return ERR_GFXOP;
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}
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@ -84,7 +84,7 @@ vm_screen_add_window(vm_screen *screen, int width, int height)
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// We plan to draw onto a surface that is xcoords x ycoords in area,
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// regardless of the actual size of the window.
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SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
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SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
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// We default to a logical coordinate system of exactly the given
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// width and height. For emulated systems like the Apple II, this
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