/
BaseRenderer.cs
1674 lines (1456 loc) · 48.6 KB
/
BaseRenderer.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.ExceptionServices;
using System.Threading;
using LibRender2.Backgrounds;
using LibRender2.Cameras;
using LibRender2.Fogs;
using LibRender2.Lightings;
using LibRender2.Loadings;
using LibRender2.MotionBlurs;
using LibRender2.Objects;
using LibRender2.Overlays;
using LibRender2.Primitives;
using LibRender2.Screens;
using LibRender2.Shaders;
using LibRender2.Text;
using LibRender2.Textures;
using LibRender2.Viewports;
using OpenBveApi;
using OpenBveApi.Colors;
using OpenBveApi.FileSystem;
using OpenBveApi.Hosts;
using OpenBveApi.Interface;
using OpenBveApi.Math;
using OpenBveApi.Objects;
using OpenBveApi.Routes;
using OpenBveApi.Textures;
using OpenBveApi.World;
using OpenTK.Graphics;
using OpenTK.Graphics.OpenGL;
using Path = OpenBveApi.Path;
using PixelFormat = OpenBveApi.Textures.PixelFormat;
using Vector3 = OpenBveApi.Math.Vector3;
namespace LibRender2
{
public abstract class BaseRenderer
{
// constants
protected const float inv255 = 1.0f / 255.0f;
/// <summary>Holds the lock for GDI Plus functions</summary>
public static readonly object GdiPlusLock = new object();
/// <summary>The callback to the host application</summary>
internal HostInterface currentHost;
/// <summary>The host filesystem</summary>
internal FileSystem fileSystem;
/// <summary>Holds a reference to the current options</summary>
internal BaseOptions currentOptions;
public List<ObjectState> StaticObjectStates;
public List<ObjectState> DynamicObjectStates;
public VisibleObjectLibrary VisibleObjects;
protected int[] ObjectsSortedByStart;
protected int[] ObjectsSortedByEnd;
protected int ObjectsSortedByStartPointer;
protected int ObjectsSortedByEndPointer;
protected internal double LastUpdatedTrackPosition;
/// <summary>Whether ReShade is in use</summary>
/// <remarks>Don't use OpenGL error checking with ReShade, as this breaks</remarks>
public bool ReShadeInUse;
/// <summary>A dummy VAO used when working with procedural data within the shader</summary>
public VertexArrayObject dummyVao;
public Screen Screen;
/// <summary>The track follower for the main camera</summary>
public TrackFollower CameraTrackFollower;
/// <summary>Holds a reference to the current interface type of the game (Used by the renderer)</summary>
public InterfaceType CurrentInterface
{
get
{
return currentInterface;
}
set
{
previousInterface = currentInterface;
currentInterface = value;
}
}
/// <summary>Holds a reference to the previous interface type of the game</summary>
public InterfaceType PreviousInterface => previousInterface;
//Backing properties for the interface values
private InterfaceType currentInterface = InterfaceType.Normal;
private InterfaceType previousInterface = InterfaceType.Normal;
public CameraProperties Camera;
public Lighting Lighting;
public Background Background;
public Fog Fog;
public Marker Marker;
public OpenGlString OpenGlString;
public TextureManager TextureManager;
public Cube Cube;
public Rectangle Rectangle;
public Loading Loading;
public Keys Keys;
public MotionBlur MotionBlur;
public Fonts Fonts;
public Matrix4D CurrentProjectionMatrix;
public Matrix4D CurrentViewMatrix;
public Vector3 TransformedLightPosition;
protected List<Matrix4D> projectionMatrixList;
protected List<Matrix4D> viewMatrixList;
public List<int> usedTrackColors = new List<int>();
public Dictionary<int, RailPath> trackColors = new Dictionary<int, RailPath>();
#pragma warning disable 0219, CS0169
/// <summary>Holds the last openGL error</summary>
/// <remarks>Is only used in debug builds, hence the pragma</remarks>
private ErrorCode lastError;
#pragma warning restore 0219, CS0169
/// <summary>The current shader in use</summary>
protected internal Shader CurrentShader;
public Shader DefaultShader;
/// <summary>Whether fog is enabled in the debug options</summary>
public bool OptionFog = true;
/// <summary>Whether lighting is enabled in the debug options</summary>
public bool OptionLighting = true;
/// <summary>Whether normals rendering is enabled in the debug options</summary>
public bool OptionNormals = false;
/// <summary>Whether back face culling is enabled</summary>
public bool OptionBackFaceCulling = true;
/// <summary>Whether WireFrame rendering is enabled in the debug options</summary>
public bool OptionWireFrame = false;
/// <summary>The current viewport mode</summary>
protected ViewportMode CurrentViewportMode = ViewportMode.Scenery;
/// <summary>The current debug output mode</summary>
public OutputMode CurrentOutputMode = OutputMode.Default;
/// <summary>The previous debug output mode</summary>
public OutputMode PreviousOutputMode = OutputMode.Default;
/// <summary>The currently displayed timetable</summary>
public DisplayedTimetable CurrentTimetable = DisplayedTimetable.None;
/// <summary>The total number of OpenGL triangles in the current frame</summary>
public int InfoTotalTriangles;
/// <summary>The total number of OpenGL triangle strips in the current frame</summary>
public int InfoTotalTriangleStrip;
/// <summary>The total number of OpenGL quad strips in the current frame</summary>
public int InfoTotalQuadStrip;
/// <summary>The total number of OpenGL quads in the current frame</summary>
public int InfoTotalQuads;
/// <summary>The total number of OpenGL polygons in the current frame</summary>
public int InfoTotalPolygon;
/// <summary>The game's current framerate</summary>
public double FrameRate = 1.0;
/// <summary>Whether Blend is enabled in openGL</summary>
private bool blendEnabled;
private BlendingFactor blendSrcFactor;
private BlendingFactor blendDestFactor;
/// <summary>Whether Alpha Testing is enabled in openGL</summary>
private bool alphaTestEnabled;
/// <summary>The current AlphaFunc comparison</summary>
private AlphaFunction alphaFuncComparison;
/// <summary>The current AlphaFunc comparison value</summary>
private float alphaFuncValue;
/// <summary>Stores the most recently bound texture</summary>
public OpenGlTexture LastBoundTexture;
private Color32 lastColor;
/// <summary>Holds the handle of the last VAO bound by openGL</summary>
public int lastVAO;
public bool ForceLegacyOpenGL
{
get;
set;
}
protected internal Texture _programLogo;
protected internal Texture whitePixel;
private bool logoError;
/// <summary>Gets the current program logo</summary>
public Texture ProgramLogo
{
get
{
if (_programLogo != null || logoError)
{
return _programLogo;
}
try
{
if (Screen.Width > 1024)
{
currentHost.RegisterTexture(Path.CombineFile(fileSystem.GetDataFolder("In-game"), "logo_1024.png"), new TextureParameters(null, null), out _programLogo, true);
}
else if (Screen.Width > 512)
{
currentHost.RegisterTexture(Path.CombineFile(fileSystem.GetDataFolder("In-game"), "logo_512.png"), new TextureParameters(null, null), out _programLogo, true);
}
else
{
currentHost.RegisterTexture(Path.CombineFile(fileSystem.GetDataFolder("In-game"), "logo_256.png"), new TextureParameters(null, null), out _programLogo, true);
}
}
catch
{
_programLogo = null;
logoError = true;
}
return _programLogo;
}
}
public bool LoadLogo()
{
return currentHost.LoadTexture(ref _programLogo, OpenGlTextureWrapMode.ClampClamp);
}
/*
* List of VBO and IBO to delete on the next frame pass
* This needs to be done here as opposed to in the finalizer
*/
internal static readonly List<int> vaoToDelete = new List<int>();
internal static readonly List<int> vboToDelete = new List<int>();
internal static readonly List<int> iboToDelete = new List<int>();
public bool AvailableNewRenderer => currentOptions != null && currentOptions.IsUseNewRenderer && !ForceLegacyOpenGL;
protected BaseRenderer(HostInterface CurrentHost, BaseOptions CurrentOptions, FileSystem FileSystem)
{
currentHost = CurrentHost;
currentOptions = CurrentOptions;
fileSystem = FileSystem;
if (CurrentHost.Application != HostApplication.TrainEditor)
{
/*
* TrainEditor2 uses a GLControl
* On the Linux SLD2 backend, this crashes when attempting to get the list of supported screen resolutions
* As we don't care about fullscreen here, just don't bother with this constructor
*/
Screen = new Screen();
}
Camera = new CameraProperties(this);
Lighting = new Lighting(this);
Marker = new Marker();
projectionMatrixList = new List<Matrix4D>();
viewMatrixList = new List<Matrix4D>();
Fonts = new Fonts(currentHost, currentOptions.Font);
VisibilityThread = new Thread(vt);
VisibilityThread.Start();
}
~BaseRenderer()
{
DeInitialize();
}
/// <summary>Call this once to initialise the renderer</summary>
/// <remarks>A call to DeInitialize should be made when closing the progam to release resources</remarks>
[HandleProcessCorruptedStateExceptions] //As some graphics cards crash really nastily if we request unsupported features
public virtual void Initialize()
{
if (!ForceLegacyOpenGL && (currentOptions.IsUseNewRenderer || currentHost.Application != HostApplication.OpenBve)) // GL3 has already failed. Don't trigger unneccessary exceptions
{
try
{
if (DefaultShader == null)
{
DefaultShader = new Shader(this, "default", "default", true);
}
DefaultShader.Activate();
DefaultShader.SetMaterialAmbient(Color32.White);
DefaultShader.SetMaterialDiffuse(Color32.White);
DefaultShader.SetMaterialSpecular(Color32.White);
lastColor = Color32.White;
DefaultShader.Deactivate();
dummyVao = new VertexArrayObject();
}
catch
{
currentHost.AddMessage(MessageType.Error, false, "Initializing the default shaders failed- Falling back to legacy openGL.");
currentOptions.IsUseNewRenderer = false;
ForceLegacyOpenGL = true;
try
{
/*
* Nasty little edge case with some Intel graphics- They create the shader OK
* but it crashes on use, but remains active
* Deactivate it, otherwise we get a grey screen
*/
if (DefaultShader != null)
{
DefaultShader.Deactivate();
}
}
catch
{
// ignored
}
}
if (DefaultShader == null)
{
// Shader failed to load, but no exception
currentHost.AddMessage(MessageType.Error, false, "Initializing the default shaders failed- Falling back to legacy openGL.");
currentOptions.IsUseNewRenderer = false;
ForceLegacyOpenGL = true;
}
}
Background = new Background(this);
Fog = new Fog();
OpenGlString = new OpenGlString(this); //text shader shares the rectangle fragment shader
TextureManager = new TextureManager(currentHost, this);
Cube = new Cube(this);
Rectangle = new Rectangle(this);
Loading = new Loading(this);
Keys = new Keys(this);
MotionBlur = new MotionBlur(this);
StaticObjectStates = new List<ObjectState>();
DynamicObjectStates = new List<ObjectState>();
VisibleObjects = new VisibleObjectLibrary(this);
whitePixel = new Texture(new Texture(1, 1, PixelFormat.RGBAlpha, new byte[] {255, 255, 255, 255}, null));
GL.ClearColor(0.67f, 0.67f, 0.67f, 1.0f);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Lequal);
SetBlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
GL.Hint(HintTarget.FogHint, HintMode.Fastest);
GL.Hint(HintTarget.LineSmoothHint, HintMode.Fastest);
GL.Hint(HintTarget.PerspectiveCorrectionHint, HintMode.Fastest);
GL.Hint(HintTarget.PointSmoothHint, HintMode.Fastest);
GL.Hint(HintTarget.PolygonSmoothHint, HintMode.Fastest);
GL.Hint(HintTarget.GenerateMipmapHint, HintMode.Nicest);
GL.Enable(EnableCap.CullFace);
GL.CullFace(CullFaceMode.Front);
GL.Disable(EnableCap.Dither);
GL.Disable(EnableCap.Lighting);
GL.Disable(EnableCap.Fog);
if (!AvailableNewRenderer)
{
GL.Disable(EnableCap.Texture2D);
GL.Fog(FogParameter.FogMode, (int)FogMode.Linear);
}
// ReSharper disable once PossibleNullReferenceException
string openGLdll = Path.CombineFile(Path.GetDirectoryName(Assembly.GetEntryAssembly().Location), "opengl32.dll");
if (File.Exists(openGLdll))
{
FileVersionInfo glVersionInfo = FileVersionInfo.GetVersionInfo(openGLdll);
if (glVersionInfo.ProductName == @"ReShade")
{
ReShadeInUse = true;
}
}
}
/// <summary>Deinitializes the renderer</summary>
public void DeInitialize()
{
// terminate spinning thread
visibilityThread = false;
}
/// <summary>Should be called when the OpenGL version is switched mid-game</summary>
/// <remarks>We need to purge the current shader state and update lighting to avoid glitches</remarks>
public void SwitchOpenGLVersion()
{
if (currentOptions.IsUseNewRenderer && AvailableNewRenderer)
{
DefaultShader.Activate();
DefaultShader.Deactivate();
}
currentOptions.IsUseNewRenderer = !currentOptions.IsUseNewRenderer;
Lighting.Initialize();
}
/// <summary>Performs cleanup of disposed resources</summary>
public void ReleaseResources()
{
//Must remember to lock on the lists as the destructor is in a different thread
lock (vaoToDelete)
{
foreach (int VAO in vaoToDelete)
{
GL.DeleteVertexArray(VAO);
}
vaoToDelete.Clear();
}
lock (vboToDelete)
{
foreach (int VBO in vboToDelete)
{
GL.DeleteBuffer(VBO);
}
vboToDelete.Clear();
}
lock (iboToDelete)
{
foreach (int IBO in iboToDelete)
{
GL.DeleteBuffer(IBO);
}
iboToDelete.Clear();
}
}
/// <summary>
/// Performs a reset of OpenGL to the default state
/// </summary>
public virtual void ResetOpenGlState()
{
GL.Enable(EnableCap.CullFace);
if (!AvailableNewRenderer)
{
GL.Disable(EnableCap.Lighting);
GL.Disable(EnableCap.Fog);
GL.Disable(EnableCap.Texture2D);
}
SetBlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
UnsetBlendFunc();
GL.Enable(EnableCap.DepthTest);
GL.DepthMask(true);
SetAlphaFunc(AlphaFunction.Greater, 0.9f);
}
public void PushMatrix(MatrixMode Mode)
{
switch (Mode)
{
case MatrixMode.Modelview:
viewMatrixList.Add(CurrentViewMatrix);
break;
case MatrixMode.Projection:
projectionMatrixList.Add(CurrentProjectionMatrix);
break;
default:
throw new ArgumentOutOfRangeException(nameof(Mode), Mode, null);
}
}
public void PopMatrix(MatrixMode Mode)
{
switch (Mode)
{
case MatrixMode.Modelview:
CurrentViewMatrix = viewMatrixList.Last();
viewMatrixList.RemoveAt(viewMatrixList.Count - 1);
break;
case MatrixMode.Projection:
CurrentProjectionMatrix = projectionMatrixList.Last();
projectionMatrixList.RemoveAt(projectionMatrixList.Count - 1);
break;
default:
throw new ArgumentOutOfRangeException(nameof(Mode), Mode, null);
}
}
public void Reset()
{
currentHost.AnimatedObjectCollectionCache.Clear();
currentHost.StaticObjectCache.Clear();
TextureManager.UnloadAllTextures();
Initialize();
}
public int CreateStaticObject(StaticObject Prototype, Vector3 Position, Transformation WorldTransformation, Transformation LocalTransformation, ObjectDisposalMode AccurateObjectDisposal, double AccurateObjectDisposalZOffset, double StartingDistance, double EndingDistance, double BlockLength, double TrackPosition, double Brightness)
{
Matrix4D Translate = Matrix4D.CreateTranslation(Position.X, Position.Y, -Position.Z);
Matrix4D Rotate = (Matrix4D)new Transformation(LocalTransformation, WorldTransformation);
return CreateStaticObject(Position, Prototype, LocalTransformation, Rotate, Translate, AccurateObjectDisposal, AccurateObjectDisposalZOffset, StartingDistance, EndingDistance, BlockLength, TrackPosition, Brightness);
}
public int CreateStaticObject(Vector3 Position, StaticObject Prototype, Transformation LocalTransformation, Matrix4D Rotate, Matrix4D Translate, ObjectDisposalMode AccurateObjectDisposal, double AccurateObjectDisposalZOffset, double StartingDistance, double EndingDistance, double BlockLength, double TrackPosition, double Brightness)
{
if (Prototype == null)
{
return -1;
}
if (Prototype.Mesh.Faces.Length == 0)
{
//Null object- Waste of time trying to calculate anything for these
return -1;
}
float startingDistance = float.MaxValue;
float endingDistance = float.MinValue;
if (AccurateObjectDisposal == ObjectDisposalMode.Accurate)
{
foreach (VertexTemplate vertex in Prototype.Mesh.Vertices)
{
Vector3 Coordinates = new Vector3(vertex.Coordinates);
Coordinates.Rotate(LocalTransformation);
if (Coordinates.Z < startingDistance)
{
startingDistance = (float)Coordinates.Z;
}
if (Coordinates.Z > endingDistance)
{
endingDistance = (float)Coordinates.Z;
}
}
startingDistance += (float)AccurateObjectDisposalZOffset;
endingDistance += (float)AccurateObjectDisposalZOffset;
}
const double minBlockLength = 20.0;
if (BlockLength < minBlockLength)
{
BlockLength *= Math.Ceiling(minBlockLength / BlockLength);
}
switch (AccurateObjectDisposal)
{
case ObjectDisposalMode.Accurate:
startingDistance += (float)TrackPosition;
endingDistance += (float)TrackPosition;
double z = BlockLength * Math.Floor(TrackPosition / BlockLength);
StartingDistance = Math.Min(z - BlockLength, startingDistance);
EndingDistance = Math.Max(z + 2.0 * BlockLength, endingDistance);
startingDistance = (float)(BlockLength * Math.Floor(StartingDistance / BlockLength));
endingDistance = (float)(BlockLength * Math.Ceiling(EndingDistance / BlockLength));
break;
case ObjectDisposalMode.Legacy:
startingDistance = (float)StartingDistance;
endingDistance = (float)EndingDistance;
break;
case ObjectDisposalMode.Mechanik:
startingDistance = (float) StartingDistance;
endingDistance = (float) EndingDistance + 1500;
if (startingDistance < 0)
{
startingDistance = 0;
}
break;
}
StaticObjectStates.Add(new ObjectState
{
Prototype = Prototype,
Translation = Translate,
Rotate = Rotate,
Brightness = Brightness,
StartingDistance = startingDistance,
EndingDistance = endingDistance,
WorldPosition = Position
});
foreach (MeshFace face in Prototype.Mesh.Faces)
{
switch (face.Flags & FaceFlags.FaceTypeMask)
{
case FaceFlags.Triangles:
InfoTotalTriangles++;
break;
case FaceFlags.TriangleStrip:
InfoTotalTriangleStrip++;
break;
case FaceFlags.Quads:
InfoTotalQuads++;
break;
case FaceFlags.QuadStrip:
InfoTotalQuadStrip++;
break;
case FaceFlags.Polygon:
InfoTotalPolygon++;
break;
}
}
return StaticObjectStates.Count - 1;
}
public void CreateDynamicObject(ref ObjectState internalObject)
{
if (internalObject == null)
{
internalObject = new ObjectState( new StaticObject(currentHost));
}
internalObject.Prototype.Dynamic = true;
DynamicObjectStates.Add(internalObject);
}
/// <summary>Initializes the visibility of all objects within the game world</summary>
/// <remarks>If the new renderer is enabled, this must be run in a thread processing an openGL context in order to successfully create
/// the required VAO objects</remarks>
public void InitializeVisibility()
{
if (!ForceLegacyOpenGL) // as we might want to switch renderer types
{
for (int i = 0; i < StaticObjectStates.Count; i++)
{
VAOExtensions.CreateVAO(ref StaticObjectStates[i].Prototype.Mesh, false, DefaultShader.VertexLayout, this);
}
for (int i = 0; i < DynamicObjectStates.Count; i++)
{
VAOExtensions.CreateVAO(ref DynamicObjectStates[i].Prototype.Mesh, false, DefaultShader.VertexLayout, this);
}
}
ObjectsSortedByStart = StaticObjectStates.Select((x, i) => new { Index = i, Distance = x.StartingDistance }).OrderBy(x => x.Distance).Select(x => x.Index).ToArray();
ObjectsSortedByEnd = StaticObjectStates.Select((x, i) => new { Index = i, Distance = x.EndingDistance }).OrderBy(x => x.Distance).Select(x => x.Index).ToArray();
ObjectsSortedByStartPointer = 0;
ObjectsSortedByEndPointer = 0;
if (currentOptions.ObjectDisposalMode == ObjectDisposalMode.QuadTree)
{
foreach (ObjectState state in StaticObjectStates)
{
VisibleObjects.quadTree.Add(state, Orientation3.Default);
}
VisibleObjects.quadTree.Initialize(currentOptions.QuadTreeLeafSize);
UpdateQuadTreeVisibility();
}
else
{
double p = CameraTrackFollower.TrackPosition + Camera.Alignment.Position.Z;
foreach (ObjectState state in StaticObjectStates.Where(recipe => recipe.StartingDistance <= p + Camera.ForwardViewingDistance & recipe.EndingDistance >= p - Camera.BackwardViewingDistance))
{
VisibleObjects.ShowObject(state, ObjectType.Static);
}
}
}
private VisibilityUpdate updateVisibility;
public bool visibilityThread = true;
public Thread VisibilityThread;
private void vt()
{
while (visibilityThread)
{
if (updateVisibility != VisibilityUpdate.None && CameraTrackFollower != null)
{
UpdateVisibility(CameraTrackFollower.TrackPosition + Camera.Alignment.Position.Z);
updateVisibility = VisibilityUpdate.None;
}
else
{
Thread.Sleep(100);
}
}
}
public void UpdateVisibility(bool force)
{
updateVisibility = force ? VisibilityUpdate.Force : VisibilityUpdate.None;
}
private void UpdateVisibility(double TrackPosition)
{
if (currentOptions.ObjectDisposalMode == ObjectDisposalMode.QuadTree)
{
UpdateQuadTreeVisibility();
}
else
{
if (updateVisibility == VisibilityUpdate.Normal)
{
UpdateLegacyVisibility(TrackPosition);
}
else
{
/*
* The original visibility algorithm fails to handle correctly cases where the
* camera angle is rotated, but the track position does not change
*
* Horrible kludge...
*/
UpdateLegacyVisibility(TrackPosition + 0.01);
UpdateLegacyVisibility(TrackPosition - 0.01);
}
}
}
private void UpdateQuadTreeVisibility()
{
if (VisibleObjects == null || VisibleObjects.quadTree == null)
{
Thread.Sleep(10);
return;
}
Camera.UpdateQuadTreeLeaf();
}
private void UpdateLegacyVisibility(double TrackPosition)
{
if (ObjectsSortedByStart == null || ObjectsSortedByStart.Length == 0 || StaticObjectStates.Count == 0)
{
return;
}
double d = TrackPosition - LastUpdatedTrackPosition;
int n = ObjectsSortedByStart.Length;
double p = CameraTrackFollower.TrackPosition + Camera.Alignment.Position.Z;
if (d < 0.0)
{
if (ObjectsSortedByStartPointer >= n)
{
ObjectsSortedByStartPointer = n - 1;
}
if (ObjectsSortedByEndPointer >= n)
{
ObjectsSortedByEndPointer = n - 1;
}
// dispose
while (ObjectsSortedByStartPointer >= 0)
{
int o = ObjectsSortedByStart[ObjectsSortedByStartPointer];
if (StaticObjectStates[o].StartingDistance > p + Camera.ForwardViewingDistance)
{
VisibleObjects.HideObject(StaticObjectStates[o]);
ObjectsSortedByStartPointer--;
}
else
{
break;
}
}
// introduce
while (ObjectsSortedByEndPointer >= 0)
{
int o = ObjectsSortedByEnd[ObjectsSortedByEndPointer];
if (StaticObjectStates[o].EndingDistance >= p - Camera.BackwardViewingDistance)
{
if (StaticObjectStates[o].StartingDistance <= p + Camera.ForwardViewingDistance)
{
VisibleObjects.ShowObject(StaticObjectStates[o], ObjectType.Static);
}
ObjectsSortedByEndPointer--;
}
else
{
break;
}
}
}
else if (d > 0.0)
{
if (ObjectsSortedByStartPointer < 0)
{
ObjectsSortedByStartPointer = 0;
}
if (ObjectsSortedByEndPointer < 0)
{
ObjectsSortedByEndPointer = 0;
}
// dispose
while (ObjectsSortedByEndPointer < n)
{
int o = ObjectsSortedByEnd[ObjectsSortedByEndPointer];
if (StaticObjectStates[o].EndingDistance < p - Camera.BackwardViewingDistance)
{
VisibleObjects.HideObject(StaticObjectStates[o]);
ObjectsSortedByEndPointer++;
}
else
{
break;
}
}
// introduce
while (ObjectsSortedByStartPointer < n)
{
int o = ObjectsSortedByStart[ObjectsSortedByStartPointer];
if (StaticObjectStates[o].StartingDistance <= p + Camera.ForwardViewingDistance)
{
if (StaticObjectStates[o].EndingDistance >= p - Camera.BackwardViewingDistance)
{
VisibleObjects.ShowObject(StaticObjectStates[o], ObjectType.Static);
}
ObjectsSortedByStartPointer++;
}
else
{
break;
}
}
}
LastUpdatedTrackPosition = TrackPosition;
}
public void UpdateViewingDistances(double BackgroundImageDistance)
{
double f = Math.Atan2(CameraTrackFollower.WorldDirection.Z, CameraTrackFollower.WorldDirection.X);
double c = Math.Atan2(Camera.AbsoluteDirection.Z, Camera.AbsoluteDirection.X) - f;
if (c < -Math.PI)
{
c += 2.0 * Math.PI;
}
else if (c > Math.PI)
{
c -= 2.0 * Math.PI;
}
double a0 = c - 0.5 * Camera.HorizontalViewingAngle;
double a1 = c + 0.5 * Camera.HorizontalViewingAngle;
double max;
if (a0 <= 0.0 & a1 >= 0.0)
{
max = 1.0;
}
else
{
double c0 = Math.Cos(a0);
double c1 = Math.Cos(a1);
max = c0 > c1 ? c0 : c1;
if (max < 0.0) max = 0.0;
}
double min;
if (a0 <= -Math.PI | a1 >= Math.PI)
{
min = -1.0;
}
else
{
double c0 = Math.Cos(a0);
double c1 = Math.Cos(a1);
min = c0 < c1 ? c0 : c1;
if (min > 0.0) min = 0.0;
}
double d = BackgroundImageDistance + Camera.ExtraViewingDistance;
Camera.ForwardViewingDistance = d * max;
Camera.BackwardViewingDistance = -d * min;
updateVisibility = VisibilityUpdate.Force;
}
/// <summary>Determines the maximum Anisotropic filtering level the system supports</summary>
public void DetermineMaxAFLevel()
{
if (currentHost.Platform == HostPlatform.AppleOSX)
{
// Calling GL.GetString in this manner seems to be crashing the OS-X driver (No idea, but probably OpenTK....)
// As we only support newer Intel Macs, 16x AF is safe
currentOptions.AnisotropicFilteringMaximum = 16;
return;
}
string[] Extensions;
try
{
Extensions = GL.GetString(StringName.Extensions).Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
ErrorCode error = GL.GetError();
if (error == ErrorCode.InvalidEnum)
{
// Doing this on a forward compatible GL context fails with invalid enum
currentOptions.AnisotropicFilteringMaximum = 16;
return;
}
}
catch
{
currentOptions.AnisotropicFilteringMaximum = 0;
currentOptions.AnisotropicFilteringLevel = 0;
return;
}
currentOptions.AnisotropicFilteringMaximum = 0;
foreach (string extension in Extensions)
{
if (String.Compare(extension, "GL_EXT_texture_filter_anisotropic", StringComparison.OrdinalIgnoreCase) == 0)
{
float n = GL.GetFloat((GetPName)ExtTextureFilterAnisotropic.MaxTextureMaxAnisotropyExt);
int MaxAF = (int)Math.Round(n);
if (MaxAF != currentOptions.AnisotropicFilteringMaximum)
{
currentOptions.AnisotropicFilteringMaximum = (int)Math.Round(n);
}
break;
}
}
if (currentOptions.AnisotropicFilteringMaximum <= 0)
{
currentOptions.AnisotropicFilteringMaximum = 0;
currentOptions.AnisotropicFilteringLevel = 0;
}
else if (currentOptions.AnisotropicFilteringLevel == 0 & currentOptions.AnisotropicFilteringMaximum > 0)
{
currentOptions.AnisotropicFilteringLevel = currentOptions.AnisotropicFilteringMaximum;
}
else if (currentOptions.AnisotropicFilteringLevel > currentOptions.AnisotropicFilteringMaximum)
{
currentOptions.AnisotropicFilteringLevel = currentOptions.AnisotropicFilteringMaximum;
}
}
public void UpdateViewport()
{
UpdateViewport(Screen.Width, Screen.Height);
}
/// <summary>Updates the openGL viewport</summary>
/// <param name="Mode">The viewport change mode</param>
public void UpdateViewport(ViewportChangeMode Mode)
{
switch (Mode)
{
case ViewportChangeMode.ChangeToScenery:
CurrentViewportMode = ViewportMode.Scenery;
break;
case ViewportChangeMode.ChangeToCab:
CurrentViewportMode = ViewportMode.Cab;
break;
}
UpdateViewport();
}
public virtual void UpdateViewport(int Width, int Height)
{
Screen.Width = Width;
Screen.Height = Height;
GL.Viewport(0, 0, Screen.Width, Screen.Height);
Screen.AspectRatio = Screen.Width / (double)Screen.Height;
Camera.HorizontalViewingAngle = 2.0 * Math.Atan(Math.Tan(0.5 * Camera.VerticalViewingAngle) * Screen.AspectRatio);
CurrentProjectionMatrix = Matrix4D.CreatePerspectiveFieldOfView(Camera.VerticalViewingAngle, Screen.AspectRatio, 0.2, currentOptions.ViewingDistance);
}
public void ResetShader(Shader Shader)
{
#if DEBUG
if (!ReShadeInUse)
{
lastError = GL.GetError();
if (lastError != ErrorCode.NoError)
{
throw new InvalidOperationException($"OpenGL Error: {lastError}");
}
}
#endif