nesemu/gui/pattern_window.c

//
// Created by william on 6/14/24.
//

#include "pattern_window.h"
#include "dbg_pattern_table.h"

#define PW_WIDTH (PW_ROW_TILE_COUNT * PATTERN_DRAW_SIZE)
#define PW_HEIGHT (PW_WIDTH * 2)
#define PW_BUFFER_SIZE (PW_WIDTH * PW_HEIGHT)

void pattern_window_init(NesPatternWindow *window) {
    int win_width = pattern_display_get_size(PW_ROW_TILE_COUNT);
    window->sdl_context = window_init("Pattern Table", win_width, win_width * 2, PW_SCALE);

    window->texture = SDL_CreateTexture(window->sdl_context.renderer, SDL_PIXELFORMAT_ARGB8888,
                                        SDL_TEXTUREACCESS_STATIC, PW_WIDTH, PW_HEIGHT);
}

void pattern_window_uninit(NesPatternWindow *window) {
    SDL_DestroyTexture(window->texture);
    window_uninit(window->sdl_context);
}

void pattern_window_build_table(NesPatternWindow *window) {
    pixel buffer[PW_BUFFER_SIZE] = {0};
    dbg_pattern_draw_bank(PATTERN_BANK_0, buffer);
    dbg_pattern_draw_bank(PATTERN_BANK_1, &buffer[PW_WIDTH * (PW_HEIGHT / 2)]);

    SDL_UpdateTexture(window->texture, NULL, buffer, PW_WIDTH * sizeof(pixel));
}

void pattern_window_render(NesPatternWindow *window) {
    SDL_RenderClear(window->sdl_context.renderer);
    SDL_RenderCopy(window->sdl_context.renderer, window->texture, NULL, NULL);
}

void pattern_window_present(NesPatternWindow *window) {
    SDL_RenderPresent(window->sdl_context.renderer);
}