public static int GenerateTexture(string resourceName, Assembly a)
{
Stream resourceStream = a.GetManifestResourceStream(resourceName);
return(HelperTexture.LoadTextureCompressedNoMipMap(resourceStream));
}
/// <summary>
/// Erstellt eine Skybox (oder Environment Map) für die aktuelle Szene als Bitmap
/// </summary>
/// <param name="resolution">Auflösung der Skybox (Standard: 4096)</param>
public static void CreateSkyboxFromCurrentSceneAndExit(int resolution = 4096)
{
_resolution = HelperTexture.RoundDownToPowerOf2(resolution);
KWEngine.CurrentWorld.AddRemoveObjects();
CreateFramebuffer();
InitFramebufferBloom();
Matrix4 modelViewProjectionMatrixBloom = Matrix4.CreateScale(_resolution, _resolution, 1) * Matrix4.LookAt(0, 0, 1, 0, 0, 0, 0, 1, 0) * Matrix4.CreateOrthographic(_resolution, _resolution, 0.1f, 100f);
Vector3 camPosition = KWEngine.CurrentWorld.GetCameraPositionEitherWay();
_viewMatrixSkybox[0] = Matrix4.LookAt(camPosition, camPosition + new Vector3(1, 0, 0), new Vector3(0, -1, 0)); // right
_viewMatrixSkybox[1] = Matrix4.LookAt(camPosition, camPosition + new Vector3(-1, 0, 0), new Vector3(0, -1, 0)); // left
_viewMatrixSkybox[2] = Matrix4.LookAt(camPosition, camPosition + new Vector3(0, 1, 0), new Vector3(0, 0, 1)); // top
_viewMatrixSkybox[3] = Matrix4.LookAt(camPosition, camPosition + new Vector3(0, -1, 0), new Vector3(0, 0, -1)); // bottom
_viewMatrixSkybox[4] = Matrix4.LookAt(camPosition, camPosition + new Vector3(0, 0, 1), new Vector3(0, -1, 0)); // front
_viewMatrixSkybox[5] = Matrix4.LookAt(camPosition, camPosition + new Vector3(0, 0, -1), new Vector3(0, -1, 0)); // back
_projectionMatrixSkybox = Matrix4.CreatePerspectiveFieldOfView(
MathHelper.DegreesToRadians(90),
1,
0.1f,
10000);
Bitmap[] bitmaps = new Bitmap[6];
for (int s = 0; s < _viewMatrixSkybox.Length; s++)
{
KWEngine.CurrentWindow.DrawSceneForSkybox(_viewMatrixSkybox[s], _projectionMatrixSkybox, s);
// Downsample framebuffer:
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, _fbFull);
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, _fbDownsample);
GL.ReadBuffer(ReadBufferMode.ColorAttachment0);
GL.DrawBuffer(DrawBufferMode.ColorAttachment0);
GL.BlitFramebuffer(0, 0, _resolution, _resolution, 0, 0, _resolution, _resolution, ClearBufferMask.ColorBufferBit, BlitFramebufferFilter.Linear);
GL.ReadBuffer(ReadBufferMode.ColorAttachment1);
GL.DrawBuffer(DrawBufferMode.ColorAttachment1);
GL.BlitFramebuffer(0, 0, _resolution, _resolution, 0, 0, _resolution, _resolution, ClearBufferMask.ColorBufferBit, BlitFramebufferFilter.Linear);
// Draw bloom:
GL.UseProgram(KWEngine.RendererBloomOld.GetProgramId());
GL.Viewport(0, 0, _resolution, _resolution);
int sourceTex; // this is the texture that the bloom will be read from
for (int i = 0; i < 4; i++)
{
if (i % 2 == 0)
{
if (i == 0)
{
HelperGeneral.SwitchToBufferAndClear(_fbBloom1);
}
else
{
GL.BindFramebuffer(FramebufferTarget.Framebuffer, _fbBloom1);
}
if (i == 0)
{
sourceTex = _tex1d;
}
else
{
sourceTex = _fbBloomTex1;
}
}
else
{
sourceTex = _fbBloomTex0;
GL.BindFramebuffer(FramebufferTarget.Framebuffer, _fbBloom2);
}
KWEngine.RendererBloomOld.DrawBloom(
KWEngine.KWRect,
ref modelViewProjectionMatrixBloom,
i % 2 == 0,
sourceTex
);
}
HelperGeneral.SwitchToBufferAndClear(_fbDownsample);
GL.UseProgram(KWEngine.RendererMerge.GetProgramId());
GL.Viewport(0, 0, _resolution, _resolution);
KWEngine.RendererMerge.DrawMerge(KWEngine.KWRect, ref modelViewProjectionMatrixBloom, _tex0d, _fbBloomTex1);
GL.UseProgram(0); // unload bloom shader program
GL.BindFramebuffer(FramebufferTarget.Framebuffer, _fbDownsample);
GL.ReadBuffer(ReadBufferMode.ColorAttachment0);
bitmaps[s] = new Bitmap(_resolution, _resolution);
BitmapData bd = bitmaps[s].LockBits(new Rectangle(0, 0, _resolution, _resolution), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
GL.ReadPixels(0, 0, _resolution, _resolution, OpenTK.Graphics.OpenGL4.PixelFormat.Bgra, PixelType.UnsignedByte, bd.Scan0);
bitmaps[s].UnlockBits(bd);
}
// make 6img:
Rectangle srcRect = new Rectangle(0, 0, _resolution, _resolution);
Bitmap finalBitmap = new Bitmap(_resolution * 4, _resolution * 3);
// left?:
using (Graphics grD = Graphics.FromImage(finalBitmap))
{
grD.DrawImage(bitmaps[1], new Rectangle(0, _resolution, _resolution, _resolution), srcRect, GraphicsUnit.Pixel);
}
// front?:
using (Graphics grD = Graphics.FromImage(finalBitmap))
{
grD.DrawImage(bitmaps[4], new Rectangle(_resolution, _resolution, _resolution, _resolution), srcRect, GraphicsUnit.Pixel);
}
// right?:
using (Graphics grD = Graphics.FromImage(finalBitmap))
{
grD.DrawImage(bitmaps[0], new Rectangle(_resolution * 2, _resolution, _resolution, _resolution), srcRect, GraphicsUnit.Pixel);
}
// back?:
using (Graphics grD = Graphics.FromImage(finalBitmap))
{
grD.DrawImage(bitmaps[5], new Rectangle(_resolution * 3, _resolution, _resolution, _resolution), srcRect, GraphicsUnit.Pixel);
}
// top?:
using (Graphics grD = Graphics.FromImage(finalBitmap))
{
grD.DrawImage(bitmaps[2], new Rectangle(_resolution, 0, _resolution, _resolution), srcRect, GraphicsUnit.Pixel);
}
// bottom?:
using (Graphics grD = Graphics.FromImage(finalBitmap))
{
grD.DrawImage(bitmaps[3], new Rectangle(_resolution, _resolution * 2, _resolution, _resolution), srcRect, GraphicsUnit.Pixel);
}
string fileaffix = DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss");
finalBitmap.Save(fileaffix + "-environmentmap.png", ImageFormat.Png);
finalBitmap.Dispose();
DeleteFramebuffer();
KWEngine.CurrentWindow.ForceClose();
}
