| // shader.cpp : This file contains the 'main' function. Program execution begins and ends there. | |
| // | |
| int main() | |
| { | |
| //Get screen sizes | |
| int x = GetSystemMetrics(SM_CXSCREEN); | |
| int y = GetSystemMetrics(SM_CYSCREEN); | |
| int size = x * y; | |
| DWORD* pixels = (DWORD*)VirtualAlloc(0, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE); | |
| while (true) { | |
| //Prepare the pixels | |
| PRGBTRIPLE rgb; | |
| HDC hdc = GetDC(0); | |
| HDC mdc = CreateCompatibleDC(hdc); | |
| BITMAPINFO bmi = { 40, x, y, 1, 24 }; | |
| HBITMAP bitmap = CreateDIBSection(hdc, &bmi, 0, (void**)&rgb, 0, 0); | |
| //Read the pixels | |
| SelectObject(mdc, bitmap); | |
| BitBlt(mdc, 0, 0, x, y, hdc, 0, 0, SRCCOPY); | |
| //Write the pixels | |
| for (int i = 0; i < size; i++) { | |
| rgb[i].rgbtRed += GetRValue(i) * 10; | |
| rgb[i].rgbtGreen += GetGValue(i) * 10; | |
| rgb[i].rgbtBlue += GetBValue(i) * 10; | |
| } | |
| BitBlt(hdc, 0, 0, x, y, mdc, 0, 0, SRCCOPY); | |
| Sleep(10); | |
| //Delete objects so the program won't use more and more memory | |
| ReleaseDC(0, hdc); | |
| DeleteObject(bitmap); | |
| DeleteObject(rgb); | |
| DeleteDC(hdc); | |
| DeleteDC(mdc); | |
| } | |
| } | |
| // Run program: Ctrl + F5 or Debug > Start Without Debugging menu | |
| // Debug program: F5 or Debug > Start Debugging menu | |
| // Tips for Getting Started: | |
| // 1. Use the Solution Explorer window to add/manage files | |
| // 2. Use the Team Explorer window to connect to source control | |
| // 3. Use the Output window to see build output and other messages | |
| // 4. Use the Error List window to view errors | |
| // 5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project | |
| // 6. In the future, to open this project again, go to File > Open > Project and select the .sln file | |