83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
#include <SDL2/SDL.h>
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#include <SDL2/SDL_video.h>
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#include "config.h"
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#include "font.h"
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extern float displayScale;
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int WINMODE = 0;
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static SDL_Window *window;
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static SDL_Renderer *renderer;
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static SDL_Texture *texture;
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void initWindow(){
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if (SDL_Init(SDL_INIT_VIDEO)){
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printf("Could not init SDL: %s\n", SDL_GetError());
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exit(EXIT_FAILURE);
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}
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atexit(SDL_Quit);
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window = SDL_CreateWindow("LS7 Emulator",
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SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
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SDL_X_SIZE, SDL_Y_SIZE, WINMODE);
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if (window == NULL){
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printf("Fatal! Could not create SDL Window: %s\n", SDL_GetError());
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exit(EXIT_FAILURE);
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}
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renderer = SDL_CreateRenderer(window, -1, 2);
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if (renderer == NULL){
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printf("Fatal! Could not create SDL Renderer: %s\n", SDL_GetError());
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exit(EXIT_FAILURE);
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}
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texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888,
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SDL_TEXTUREACCESS_STREAMING,
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SDL_X_SIZE, SDL_Y_SIZE);
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if (texture == NULL){
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printf("Fatal! Could not create SDL Texture: %s\n", SDL_GetError());
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exit(EXIT_FAILURE);
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}
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if (SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_NONE)){
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printf("Fatal! Could not set SDL blend mode: %s\n", SDL_GetError());
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exit(EXIT_FAILURE);
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}
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}
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void sdlResize(){
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SDL_SetWindowSize(window, SDL_X_SIZE * displayScale, SDL_Y_SIZE * displayScale);
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}
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void clearScreen(uint32_t pixels[], uint32_t color){
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for (uint32_t i = 0; i < SDL_X_SIZE * SDL_Y_SIZE; i++) pixels[i] = color;
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}
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#define CHARMARGIN 0
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void drawString(const char* string, uint32_t pixels[], uint16_t screenXsize, uint32_t foreground, uint32_t background, uint16_t x, uint16_t y, uint8_t scale){
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uint16_t xCount = x;
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uint16_t yCount = y;
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for (int i = 0; string[i]; i++){
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if (string[i] > 31 && string[i] < 127){
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for (int _x = 0; _x < FONT_WIDTH * scale; _x++){
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if (xCount + _x >= screenXsize){
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xCount = x;
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yCount += (FONT_HEIGHT + CHARMARGIN) * scale;
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}
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for (int _y = 0; _y < FONT_HEIGHT * scale; _y++){
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uint8_t value = typeface[((string[i] - 32) * FONT_HEIGHT) + (_y / scale)] & (128 >> (_x / scale));
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if (value && foreground != 0) pixels[(( yCount + _y) * screenXsize) + (xCount + _x)] = foreground;
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else if (!value && background != 0) pixels[(( yCount + _y) * screenXsize) + (xCount + _x)] = background;
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}
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}
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xCount += (FONT_WIDTH + CHARMARGIN) * scale;
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} else if (string[i] == '\n'){
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xCount = x;
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yCount += (FONT_HEIGHT + CHARMARGIN) * scale;
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}
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}
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}
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