File size: 1,951 Bytes
cd295bd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | // shader.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <windows.h>
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
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