public void ShouldSetBytesInRectangle()
{
var width = 10;
var height = 10;
var rectangle = new Rectangle(5, 5, width, height);
var format = PixelFormat.Format_RGB888;
var texture = graphics.CreateTexture(
graphics.OutputSize.Width,
graphics.OutputSize.Height,
format: format);
var pixels = new byte[width * height * format.GetBytesPerPixel()];
for (int i = 0; i < pixels.Length; i++)
{
pixels[i] = 255;
}
texture.SetPixels(ref pixels, rectangle);
graphics.Draw(texture);
var actual = new ColorRGB888[width * height];
graphics.ReadPixels(ref actual, rectangle);
actual.Distinct().Should().BeEquivalentTo(
new ColorRGB888(Color.White)
);
}
public void ShouldReadPixelsFromFramebuffer()
{
var color = Color.CornflowerBlue;
var readBuffer = new ColorRGB888[graphics.PixelCount];
graphics.Clear(Color.Black);
graphics.ReadPixels(ref readBuffer);
readBuffer.Distinct().Should().BeEquivalentTo(new ColorRGB888());
graphics.Clear(color);
app.Tick();
graphics.Clear(color);
graphics.ReadPixels(ref readBuffer);
readBuffer.Distinct().Should().BeEquivalentTo(new ColorRGB888(color));
}
public void ShouldReadPixelsFromFramebufferInRectangle()
{
var color = Color.CornflowerBlue;
var rectangle = new Rectangle(5, 5, 10, 10);
var readBuffer = new ColorRGB888[graphics.GetPixelBufferSize(rectangle)];
graphics.Clear(Color.Black);
graphics.ReadPixels(ref readBuffer, rectangle);
readBuffer.Distinct().Should().BeEquivalentTo(new ColorRGB888());
var texture = graphics.CreateTexture(rectangle.Width, rectangle.Height);
var textureData = Enumerable.Repeat(new ColorRGB888(color),
texture.PixelCount).ToArray();
texture.SetPixels(ref textureData);
graphics.Draw(texture, dstRect: rectangle);
graphics.ReadPixels(ref readBuffer, rectangle);
readBuffer.Distinct().Should().BeEquivalentTo(new ColorRGB888(color));
}
public void ShouldSaveFramebufferData()
{
var color = Color.CornflowerBlue.WithoutName();
graphics.Clear(color);
var ms = new MemoryStream();
graphics.SaveAsPng(ms);
ms.Seek(0, SeekOrigin.Begin);
var surface = SurfaceFactory.FromStream(ms, new PngDecoder());
var pixels = new ColorRGB888[surface.PixelCount];
surface.ReadPixels(ref pixels);
pixels.Distinct().Select(c => c.AsColor())
.Should().BeEquivalentTo(color);
}
public void ShouldDrawInSpecifiedRectangles(Rectangle?src, Rectangle?dst)
{
var color = new ColorRGB888(Color.CornflowerBlue);
var size = graphics.OutputSize;
var texture = graphics.CreateTexture(
dst?.Width ?? size.Width,
dst?.Height ?? size.Height);
var pixels = Enumerable.Repeat(
color,
texture.GetPixelBufferSize <ColorRGB888>(src)
).ToArray();
texture.SetPixels(ref pixels, src);
graphics.Clear(Color.Black);
graphics.Draw(texture, src, dst);
var portion = Project(texture, src, dst);
var actual = new ColorRGB888[graphics.GetPixelBufferSize(portion)];
graphics.ReadPixels(ref actual, portion);
actual.Distinct().Should().BeEquivalentTo(color);
}