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#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_timer.h>
Uint32 mixSDLColors(Uint32 back, Uint32 front, SDL_PixelFormat *fmt, float alpha)
{
Uint32 ch1, ch2, sum = 0;
// mask = fmt->Rmask;
ch1 = back & fmt->Rmask;
ch2 = front & fmt->Rmask;
// sum += ch2;
sum += (ch1 + ch2) >> 1;
printf("%i", sum);
ch1 = back & fmt->Gmask;
ch2 = front & fmt->Gmask;
// sum += ch2;
sum += (ch1 + ch2) >> 1;
printf("%i", sum);
ch1 = back & fmt->Bmask;
ch2 = front & fmt->Bmask;
// sum += ch2;
sum += (ch1 + ch2) >> 1;
printf("%i", sum);
return sum;
}
int main(){
SDL_Window *window = NULL;
SDL_Surface *s = NULL;
// SDL_Renderer *renderer = NULL;
SDL_Init(SDL_INIT_VIDEO);
window = SDL_CreateWindow("test",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
960,
512,
0);
s = SDL_GetWindowSurface(window);
Uint32 a = 0; // 0x000000
Uint32 b = pow(2, 24) - 1; // 0xffffff
printf("0x808080 = %i", mixSDLColors(a, b, s->format, 0));
// renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
// SDL_Texture *sky = NULL;
// sky = IMG_LoadTexture(renderer, "/home/pupkich/Gameproj/textures/toxicclouds512.bmp");
// SDL_RenderCopy(renderer, sky, NULL, NULL);
// SDL_RenderPresent(renderer);
// SDL_DestroyTexture(sky);
// SDL_Delay(200);
}
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