Topics

1

General / Visual Studio 2019 compatibility

« on: June 18, 2021, 10:08:09 pm »

I'm following the "SFML and Visual Studio" Tutorial on this site. It states:

"You must download the package that matches your version of Visual C++. Indeed, a library compiled with VC++ 10 (Visual Studio 2010) won't be compatible with VC++ 12 (Visual Studio 2013) for example. If there's no SFML package compiled for your version of Visual C++, you will have to build SFML yourself."

This implies that the "Visual C++ 15 (2017) - 32-bit" package from the download page is not compatible with Visual Studio 2019. Is that actually the case?

2

Graphics / Unexpected result while drawing pixels

« on: February 27, 2010, 02:15:51 pm »

Hi,

I'm new to SFML and I got some unexpected results running my first test code:

Code: [Select]

#include <SFML/Graphics.hpp>

using namespace sf;

int main()
{
const unsigned int width = 200;
const unsigned int height = width;

RenderWindow app(VideoMode(width, height, 32), "");

Image image(width, height);
Sprite sprite(image);

const unsigned int step = 2;
for (unsigned int y = 0; y <= height - step; y += step)
{
for (unsigned int x = 0; x <= width - step; x += step)
{
image.SetPixel(x, y, Color::White);
}
}

app.Draw(sprite);
app.Display();

while (app.IsOpened())
{
Event event;
while (app.GetEvent(event))
{
if (event.Type == Event::Closed)
{
app.Close();
}
}
}

return EXIT_SUCCESS;
}


The resulting image is not what I would expect: the pixels become gray and blurry towards the edges of the image. What is causing this and how can I prevent it? I'm using SFML version 1.5 under Windows 7 64 bit with an ATI Radeon 5770 graphics card with the latest display drivers.

I would like to mix drawing shapes (using sf::Shape::Line, sf::Shape::Circle and sf::Shape::Rectangle) and pixels: draw some shapes, then draw some pixels, draw some more shapes, etc, and then display the results. What is a good approach to draw the pixels in this case?