float ReadRedAverage(HemicubeFramebuffer fbo)
{
TextureGL texture = framebuffer[(int)fbo][FramebufferAttachment.ColorAttachment0];
texture.GenerateMipmap();
// TODO AccessViolatonException
bool found = false;
while (
(found == false) &&
(smallestMipmapLevel >= 0)
)
{
try
{
framebuffer[(int)fbo].AttachTextureLevel(FramebufferAttachment.ColorAttachment0, smallestMipmapLevel);
found = true;
}
catch (Exception)
{
System.Diagnostics.Trace.TraceWarning("TODO");
--smallestMipmapLevel;
}
if (smallestMipmapLevel == -1)
{
System.Diagnostics.Trace.TraceWarning("TODO");
return(0);
}
}
float[] pixels = new float[4];
float[] depths = new float[4];
GL.ReadBuffer(ReadBufferMode.ColorAttachment0);
GL.ReadPixels <float>(0, 0, 1, 1, PixelFormat.Red, PixelType.Float, pixels);
framebuffer[(int)fbo].AttachTextureLevel(FramebufferAttachment.ColorAttachment0, 0);
return(pixels[0]);
}
private void Render(
HemicubeFramebuffer fbo,
HemicubeOrientation orientation,
Matrix4 cameraRotation,
Vector3 positionInWorld
)
{
// Select and activate framebuffer
framebuffer[(int)fbo].Begin();
framebuffer[(int)fbo].Check();
// Set camera orientation
int i = (int)orientation;
Matrix4 localToWorld = cameraRotation * faceOrientation[i];
localToWorld._03 = positionInWorld.X;
localToWorld._13 = positionInWorld.Y;
localToWorld._23 = positionInWorld.Z;
camera[i].Frame.Parent = null;
camera[i].Frame.LocalToParent.Set(localToWorld);
camera[i].Frame.LocalToWorld.Set(localToWorld);
renderer.Requested.Camera = camera[i];
//camera[i].Frame.UpdateHierarchical();
// Set viewport
renderer.Requested.Viewport = viewport[i];
#if false
switch (i)
{
case (int)HemicubeOrientation.PosX: GL.ClearColor(1.0f, 0.5f, 0.5f, 1.0f); break; // red
case (int)HemicubeOrientation.NegX: GL.ClearColor(1.0f, 1.0f, 0.5f, 1.0f); break; // yellow
case (int)HemicubeOrientation.PosY: GL.ClearColor(0.5f, 1.0f, 0.5f, 1.0f); break; // green
case (int)HemicubeOrientation.NegY: GL.ClearColor(0.5f, 1.0f, 1.0f, 1.0f); break; // cyan
case (int)HemicubeOrientation.NegZ: GL.ClearColor(0.5f, 0.5f, 1.0f, 1.0f); break; // blue
}
#endif
GL.Scissor(
(int)renderer.Requested.Viewport.X,
(int)renderer.Requested.Viewport.Y,
(int)renderer.Requested.Viewport.Width,
(int)renderer.Requested.Viewport.Height
);
GL.Enable(EnableCap.ScissorTest);
GL.Viewport(
(int)renderer.Requested.Viewport.X,
(int)renderer.Requested.Viewport.Y,
(int)renderer.Requested.Viewport.Width,
(int)renderer.Requested.Viewport.Height
);
// Clear and render
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Disable(EnableCap.ScissorTest);
renderer.Requested.Material = MaterialOverride;
//renderer.Requested.Program = ProgramOverride;
renderer.Requested.MeshMode = MeshMode.PolygonFill;
renderer.RenderGroup();
framebuffer[(int)fbo].End();
}
