56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
//
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// Created by william on 12/07/24.
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//
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#include <assert.h>
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#include "nametable_window.h"
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#define NAMETABLE_BANK_SIZE 0x0400
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void nametable_window_init(NesNametableWindow *window) {
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int win_size = pattern_display_get_size(NW_ROW_TILE_COUNT);
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window->sdl_context = window_init("Nametable", win_size, win_size, NW_SCALE);
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pattern_display_init(&window->pattern_display, window->sdl_context.renderer, NW_ROW_TILE_COUNT, NW_ROW_TILE_COUNT - 2,
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PATTERN_DISPLAY_DYNAMIC);
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}
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void nametable_window_uninit(NesNametableWindow *window) {
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pattern_display_uninit(&window->pattern_display);
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window_uninit(window->sdl_context);
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}
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static byte *nametable_window_read_byte(address addr, void *data) {
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assert(addr < NAMETABLE_BANK_SIZE * 4);
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assert(data != NULL);
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byte **nametables = (byte **) data;
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int bank = addr / NAMETABLE_BANK_SIZE;
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int bank_addr = addr % NAMETABLE_BANK_SIZE;
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switch (bank) {
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case 0:
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case 1:
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return &nametables[0][bank_addr];
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default:
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return &nametables[1][bank_addr];
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}
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}
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void nametable_window_update(NesNametableWindow *window, byte *nametable_0, byte *nametable_1) {
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byte **nametables[2];
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nametables[0] = &nametable_0;
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nametables[1] = &nametable_1;
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pattern_display_build(&window->pattern_display, &nametable_window_read_byte, nametables);
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}
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void nametable_window_render(NesNametableWindow *window) {
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SDL_RenderClear(window->sdl_context.renderer);
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pattern_display_render(&window->pattern_display, window->sdl_context.renderer);
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}
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void nametable_window_present(NesNametableWindow *window) {
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SDL_RenderPresent(window->sdl_context.renderer);
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} |