public static void RenderScreen(FBO fbo)
{
// Create the screen if it's not exist
if (screenVAO == 0)
{
float[] indArray = new float[] {
-1.0f, 1.0f, 0.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f,
1.0f, -1.0f, 1.0f, 0.0f,
1.0f, -1.0f, 1.0f, 0.0f,
-1.0f, -1.0f, 0.0f, 0.0f,
-1.0f, 1.0f, 0.0f, 1.0f
};
screenVAO = GL.GenVertexArray();
screenVBO = GL.GenBuffer();
GL.BindVertexArray(screenVAO);
GL.BindBuffer(BufferTarget.ArrayBuffer, screenVBO);
GL.BufferData(BufferTarget.ArrayBuffer, sizeof(float) * indArray.Length, indArray, BufferUsageHint.StaticDraw);
GL.EnableVertexAttribArray(GL.VERTEX_POSITION_LOCATION);
GL.VertexAttribPointer(GL.VERTEX_POSITION_LOCATION, 2, VertexAttribPointerType.Float, false, 4 * sizeof(float), 0);
GL.EnableVertexAttribArray(GL.VERTEX_TEXTURE_COORD_LOCATION);
GL.VertexAttribPointer(GL.VERTEX_TEXTURE_COORD_LOCATION, 2, VertexAttribPointerType.Float, false, 4 * sizeof(float), 2 * sizeof(float));
screenShaderProgram = new RenderTextureShaderProgram()
{
PostEffectMode = PostEffectMode.None,
Width = fbo.Size.Width,
Height = fbo.Size.Height
};
}
// Bind the shader
screenShaderProgram.Bind();
// Bind the vertex array
GL.BindVertexArray(screenVAO);
// Depth test settings
BackupState(RendererBackupMode.DepthTest);
BackupState(RendererBackupMode.FaceCulling);
DepthTest(false);
FaceCulling(false);
// Bind the texture
GL.ActiveTexture(GL.COLOR_TEXTURE_UNIT_INDEX);
GL.BindTexture(TextureTarget.Texture2D, fbo.GetTextureID(FramebufferAttachment.ColorAttachment0));
// Draw the screen
GL.DrawArrays(BeginMode.Triangles, 0, 6);
// Make sure this VAO don't change from the outside
GL.BindVertexArray(0);
// Restore states
RestoreState(RendererBackupMode.DepthTest);
RestoreState(RendererBackupMode.FaceCulling);
}
public void ClearAllColourBuffers(Vector4 colour)
{
foreach (var slot in TextureSlots.Where(s => s.Enabled).Select(s => s.Slot))
{
FBO.ClearColourBuffer(slot, colour);
}
}
protected override void OnRendering(IHostScreen screen, ref FBO currentFbo)
{
currentFbo = _gBuffer.FBO;
FBO.Bind(currentFbo, FBO.Target.FrameBuffer);
ElffyGL.Clear(ClearMask.ColorBufferBit | ClearMask.DepthBufferBit);
_gBuffer.ClearColorBuffers();
}
public RenderTexture(int width, int height, Filter filterMode = Filter.Linear, Wrapping wrapMode = Wrapping.Repeat, string path = "") : base(path, false)
{
fbo = new FBO();
fbo.Bind();
Handle = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, Handle);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba8, width, height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, IntPtr.Zero);
depthStencil = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, depthStencil);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Depth24Stencil8, width, height, 0, PixelFormat.DepthStencil, PixelType.UnsignedInt248, IntPtr.Zero);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToBorder);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToBorder);
var metaData = LoadMetaData();
SetFilter(metaData.Count >= 1 ? (Filter)Convert.ToInt32(metaData[0].value) : filterMode, false);
SetWrapping(metaData.Count >= 2 ? (Wrapping)Convert.ToInt32(metaData[1].value) : wrapMode);
fbo.AttachTexture(Handle);
fbo.AttachDepthStencilTexture(depthStencil);
if (GL.Ext.CheckFramebufferStatus(FramebufferTarget.Framebuffer) != FramebufferErrorCode.FramebufferComplete)
{
Logging.LogWarning(this, "Framebuffer is not complete!");
}
fbo.Unbind();
}
static (IHostScreen Screen, FBO Fbo, TextureObject DepthTex, Vector2i Size) Create(int width, int height)
{
var screen = Engine.GetValidCurrentContext();
var size = new Vector2i(width, height);
var depth = TextureObject.Empty;
var fbo = FBO.Empty;
try {
depth = TextureObject.Create();
TextureObject.Bind2D(depth);
TextureObject.DepthImage2DUninitialized(size);
TextureObject.Parameter2DMinFilter(TextureShrinkMode.NearestNeighbor, TextureMipmapMode.None);
TextureObject.Parameter2DMagFilter(TextureExpansionMode.NearestNeighbor);
TextureObject.Parameter2DWrapS(TextureWrapMode.ClampToBorder);
TextureObject.Parameter2DWrapT(TextureWrapMode.ClampToBorder);
fbo = FBO.Create();
FBO.Bind(fbo, FBO.Target.FrameBuffer);
FBO.SetTexture2DBuffer(depth, FBO.Attachment.DepthAttachment);
GL.DrawBuffer(DrawBufferMode.None);
GL.ReadBuffer(ReadBufferMode.None);
FBO.ThrowIfInvalidStatus();
FBO.Unbind(FBO.Target.FrameBuffer);
return(Screen : screen, Fbo : fbo, DepthTex : depth, Size : size);
}
catch {
TextureObject.Delete(ref depth);
FBO.Delete(ref fbo);
throw;
}
}
public void newSize()
{
if (_SnapBuffer != null)
{
_SnapBuffer.Dispose();
}
_SnapBuffer = null;
}
private void btn_Save_Click(object sender, EventArgs e)
{
if (FBO.ShowDialog() == DialogResult.OK)
{
Settings.Default.SavePath = FBO.SelectedPath;
Directory_Read(FBO.SelectedPath);
}
}
private protected sealed override void RenderOverride(IHostScreen screen, ref FBO currentFbo)
{
var timingPoints = TimingPoints;
timingPoints.BeforeRendering.DoQueuedEvents();
if (IsVisible)
{
RenderPostProcess(screen, ref currentFbo);
}
timingPoints.AfterRendering.DoQueuedEvents();
}
public Rasterizer(int resolutionX, int resolutionY, DrawHandler drawHandler)
{
if (ReferenceEquals(null, drawHandler))
{
throw new ArgumentException("Draw handler must not equal null!");
}
this.drawHandler = drawHandler;
copyToFrameBuffer = new TextureToFrameBuffer();
texRenderSurface = Texture.Create(resolutionX, resolutionY);
texRenderSurface.FilterNearest();
renderToTexture = new FBO(texRenderSurface);
}
public void BindForWriting()
{
SaveViewport();
FBO.Bind(FramebufferTarget.DrawFramebuffer);
GL.Viewport(0, 0, Width, Height);
SetDrawBuffers();
if (WantDepth)
{
GL.Enable(EnableCap.DepthTest);
GL.DepthMask(true);
}
}
public Image(int width, int height, bool hasDepthBuffer = false, byte components = 4, bool floatingPoint = false) : this(hasDepthBuffer)
{
var tex = TextureLoader.Create(width, height, components, floatingPoint);
if (hasDepthBuffer)
{
fbo = new FBOwithDepth(tex);
}
else
{
fbo = new FBO(tex);
}
}
public void Resize(int width, int height)
{
_width = width;
_height = height;
_aspect = (float)width / height;
_renderToTexture[0] = new FBO(Texture2dGL.Create(width, height));
_renderToTexture[1] = new FBO(Texture2dGL.Create(width, height));
_renderToTexture[2] = new FBO(Texture2dGL.Create(width, height));
_renderToTexture[3] = new FBO(Texture2dGL.Create(width / 2, height / 2));
_renderToTexture[4] = new FBO(Texture2dGL.Create(width, height));
_renderToTextureWithDepth[0] = new FBOwithDepth(Texture2dGL.Create(width, height));
_renderToTextureWithDepth[1] = new FBOwithDepth(Texture2dGL.Create(width / 2, height / 2, 1, true));
}
private void GlSetup()
{
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.DepthClamp);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.Blend);
GL.CullFace(CullFaceMode.Back);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.ActiveTexture(TextureUnit.Texture0);
_frameBuffer = new FBO(Width, Height, false, 4);
}
public Rasterizer(IContentLoader contentLoader, int resolutionX, int resolutionY, Action drawHandler)
{
if (drawHandler is null)
{
throw new ArgumentException("Draw handler must not equal null!");
}
this.drawHandler = drawHandler;
copyToFrameBuffer = new PostProcessing(contentLoader.LoadPixelShader("copy.frag"));
var texRenderSurface = Texture2dGL.Create(resolutionX, resolutionY);
texRenderSurface.Filter = TextureFilterMode.Nearest;
fbo = new FBO(texRenderSurface);
}
/// <summary>
/// Bind GBuffer for writing to the supplied textures
/// </summary>
/// <param name="outputTextures"></param>
public void BindForWritingTo(params TextureSlot[] outputTextures)
{
// shouldn't call this if we've got any texture slots defined.
SaveViewport();
FBO.Bind(FramebufferTarget.DrawFramebuffer);
GL.Viewport(0, 0, Width, Height);
for (int i = 0; i < outputTextures.Length; i++)
{
outputTextures[i].AttachToFramebuffer(FBO.Target);
}
GL.DrawBuffers(outputTextures.Length, outputTextures.Select(t => t.DrawBufferSlot).ToArray());
}
public PlayerTrail()
{
var window = Framework.Game.Instance.Window;
fbo = new FBO(Texture2dGL.Create(window.Width, window.Height));
fbo.Texture.WrapFunction = TextureWrapFunction.MirroredRepeat;
try {
shader = ShaderLoader.FromStrings(
DefaultShader.VertexShaderScreenQuad,
DefaultShader.FragmentShaderCopy);
} catch (ShaderException e) {
Console.WriteLine(e.ShaderLog);
}
}
public void UnbindFromWriting()
{
FBO.Unbind(FramebufferTarget.DrawFramebuffer);
RestoreViewport();
// generate any requested mipmaps
foreach (var ts in TextureSlots.Where(s => s.Enabled && s.TextureParam.MipMaps))
{
GL.Enable(EnableCap.Texture2D);
ts.Texture.Bind();
ts.Texture.ApplyParameters();
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
}
}
private void GlSetup()
{
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.DepthClamp);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.Blend);
GL.CullFace(CullFaceMode.Back);
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Fill);
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
GL.Enable(EnableCap.Multisample);
GL.ActiveTexture(TextureUnit.Texture0);
_frameBuffer = new FBO(Width, Height, true);
}
protected override void OnRendered(IHostScreen screen, ref FBO currentFbo)
{
var targetFbo = FBO.Empty;
var gBuffer = _gBuffer;
var screenSize = screen.FrameBufferSize;
var gBufSize = gBuffer.Size;
Debug.Assert(_postProcess is not null);
Debug.Assert(_ppProgram is not null);
FBO.Bind(targetFbo, FBO.Target.FrameBuffer);
if (IsVisible)
{
_ppProgram.Render(screenSize, (Vector2)screenSize / (Vector2)gBufSize);
}
currentFbo = targetFbo;
}
public void UpdateSurfaceSize(int width, int height)
{
if (0 == width || 0 == height)
{
return;
}
if (width != activeFBO.Texture.Width || height != activeFBO.Texture.Height)
{
var isActive = activeFBO == fboA;
fboA.Texture.Dispose();
fboB.Texture.Dispose();
fboA.Dispose();
fboB.Dispose();
fboA = new FBO(CreateTexture(width, height));
fboB = new FBO(CreateTexture(width, height));
activeFBO = isActive ? fboA : fboB;
}
}
public PostProcesser(OpenGL gl, int width, int height)
{
_gl = gl;
_fbo = new FBO(gl, width, height);
_flatProgram = new FlatShader(gl);
_flat = new VAO(gl);
_flatBuffer = new VBO(gl);
using (new Bind(_flat))
using (new Bind(_flatBuffer))
{
var flatData = new float[] { -1, -1, 1, -1, -1, 1, 1, 1, };
_flatBuffer.Update(flatData, flatData.Length * sizeof(float));
gl.EnableVertexAttribArray(0);
gl.VertexAttribPointer(0, 2, OpenGL.GL_FLOAT, false, 0, new IntPtr(0));
gl.BindVertexArray(0);
}
}
public PostProcessingVisual(int width, int height, IContentLoader contentLoader)
{
renderToTexture = new FBO(Texture2dGL.Create(width, height));
renderToTexture.Texture.WrapFunction = TextureWrapFunction.MirroredRepeat;
try
{
shaderProgram = contentLoader.LoadPixelShader("Grayscale");
shaderProgram = contentLoader.LoadPixelShader("Sepia");
shaderProgram = contentLoader.LoadPixelShader("Vignetting");
shaderProgram = contentLoader.LoadPixelShader("ChromaticAberration");
shaderProgram = contentLoader.LoadPixelShader("convolution");
shaderProgram = contentLoader.LoadPixelShader("EdgeDetect");
shaderProgram = contentLoader.LoadPixelShader("Ripple");
shaderProgram = contentLoader.LoadPixelShader("Swirl");
}
catch (ShaderException e)
{
Console.WriteLine(e.Message);
Console.ReadLine();
}
}
public void Load()
{
LogTrace($"Creating G-Buffer of size {Width}x{Height}");
FBO.Load();
FBO.Bind();
UnloadAndDestroyAllTextures();
InitAllTextures();
if (WantDepth)
{
InitAndAttachDepthTexture();
}
SetDrawBuffers();
var status = FBO.GetStatus();
LogTrace($"FBO state is {FBO.Status}");
FBO.Unbind();
}
protected abstract void RenderPostProcess(IHostScreen screen, ref FBO currentFbo);
public PostProcessing(int width, int height)
{
renderToTexture = new FBO(Texture.Create(width, height));
SetShader(TextureToFrameBuffer.FragmentShaderCopy);
}
public RenderSurfacePingPong()
{
fboA = new FBO(CreateTexture(1, 1));
fboB = new FBO(CreateTexture(1, 1));
activeFBO = fboA;
}
protected override void OnRendered(IHostScreen screen, ref FBO currentFbo)
{
// nop
}
protected override void OnRendering(IHostScreen screen, ref FBO currentFbo)
{
FBO.Bind(FBO.Empty, FBO.Target.FrameBuffer);
currentFbo = FBO.Empty;
}
protected sealed override void OnRendered(IHostScreen screen, ref FBO currentFbo)
{
Debug.Fail("This method should not be called.");
throw new NotSupportedException("This method should not be called.");
}
/// <summary>Load resources here.</summary>
/// <param name="e">Not used.</param>
protected override void OnLoad(EventArgs e)
{
//Base
base.OnLoad(e);
if (Utilities.EngineSettings == null) Utilities.EngineSettings = new Settings();
//Print useful information about the card
Console.WriteLine("==================================");
Console.WriteLine("Vendor: {0}", GL.GetString(StringName.Vendor));
Console.WriteLine("Renderer: {0}", GL.GetString(StringName.Renderer));
Console.WriteLine("GLSL Version: {0}", GL.GetString(StringName.ShadingLanguageVersion));
string versionOpenGL = GL.GetString(StringName.Version);
GLVersion.Major = (int)Char.GetNumericValue(versionOpenGL[0]);
GLVersion.Minor = (int)Char.GetNumericValue(versionOpenGL[2]);
Console.WriteLine("OpenGL version: {0}", versionOpenGL);
if (GLVersion.Major < 3 || (GLVersion.Major == 3 && GLVersion.Minor < 2))
{
Utilities.Print("You graphics card is on an older version of OpenGL ({0}). This application uses OpenGL 3.2. Good luck!", Utilities.PrintCode.WARNING, GLVersion.SimpleString() );
}
Console.WriteLine("==================================");
Utilities.Init(this);
Audio.Init();
GL.ClearColor(0, 0, 0, 0.0f);
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.CullFace);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.AlphaFunc(AlphaFunction.Greater, 0.1f);
//Textures
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.DepthClamp);
//Initialize our shadow FBO
shadowFBO = new FBO(Utilities.EngineSettings.ShadowMapSize, Utilities.EngineSettings.ShadowMapSize);
//Change some specific texture parameters
GL.BindTexture(TextureTarget.Texture2D, shadowFBO._RT);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureCompareMode, (int)TextureCompareMode.CompareRefToTexture);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureCompareFunc, (int)All.Lequal);
GL.BindTexture(TextureTarget.Texture2D, 0);
//Bind some textures to our default framebuffer
//Utilities.ScreenDepthTex = FBO.BindTextureToFBO(0, this.WindowContext.Width, this.WindowContext.Height, PixelInternalFormat.DepthComponent, PixelFormat.DepthComponent, FramebufferAttachment.DepthAttachment);
//Utilities.ScreenTex = FBO.BindTextureToFBO(0, this.WindowContext.Width, this.WindowContext.Height, PixelInternalFormat.Rgba, PixelFormat.Rgba, FramebufferAttachment.ColorAttachment1);
//Initalize lighting
LightingTechnique.Init();
//Initialize our shadows
ShadowTechnique.Init();
ShadowTechnique.Enabled = Utilities.EngineSettings.EnableShadows;
//Initialize skybox
SkyboxTechnique.Init();
//Initalize our gui system
GUI.GUIManager.Init();
//Create some debug stuff
Graphics.Init();
//Let's have some built in debug out stuff
GUI.GUIManager.PostDrawHUD += new GUI.GUIManager.OnDrawHUD(GUIManager_PostDrawHUD);
}
public void RenderFrame()
{
// ------------------------------------------------------------
// Out of frame loop
Debug.Assert(_currentTiming == CurrentFrameTiming.OutOfFrameLoop);
var isCloseRequested = _isCloseRequested;
var layers = Layers;
var frameTimingPoints = TimingPoints;
Mouse.InitFrame();
Keyboard.InitFrame();
// ------------------------------------------------------------
// First Frame initializing
if (_state == RenderingAreaLifeState.Activating)
{
_currentTiming = CurrentFrameTiming.FirstFrameInitializing;
try {
Initialized?.Invoke(OwnerScreen);
}
catch {
if (EngineSetting.UserCodeExceptionCatchMode == UserCodeExceptionCatchMode.Throw)
{
throw;
}
// Don't throw. (Ignore exceptions in user code)
}
finally {
_state = RenderingAreaLifeState.Alive;
}
}
// ------------------------------------------------------------
// Frame initializing
_currentTiming = CurrentFrameTiming.FrameInitializing;
if (isCloseRequested && _state == RenderingAreaLifeState.Alive)
{
_state = RenderingAreaLifeState.Terminating;
_runningTokenSource.Cancel();
layers.TerminateAllLayers(this,
onDead: static self =>
{
self._state = RenderingAreaLifeState.Dead;
});
}
layers.ApplyAdd();
frameTimingPoints.FrameInitializing.DoQueuedEvents();
// ------------------------------------------------------------
// Early update
_currentTiming = CurrentFrameTiming.EarlyUpdate;
frameTimingPoints.EarlyUpdate.DoQueuedEvents();
layers.EarlyUpdate();
// ------------------------------------------------------------
// Update
_currentTiming = CurrentFrameTiming.Update;
frameTimingPoints.Update.DoQueuedEvents();
layers.Update();
// ------------------------------------------------------------
// Late update
_currentTiming = CurrentFrameTiming.LateUpdate;
frameTimingPoints.LateUpdate.DoQueuedEvents();
layers.LateUpdate();
// ------------------------------------------------------------
// Before rendering
_currentTiming = CurrentFrameTiming.BeforeRendering;
FBO.Bind(FBO.Empty, FBO.Target.FrameBuffer);
ElffyGL.Clear(ClearMask.ColorBufferBit | ClearMask.DepthBufferBit);
frameTimingPoints.BeforeRendering.DoQueuedEvents();
// ------------------------------------------------------------
// Rendering
_currentTiming = CurrentFrameTiming.Rendering;
layers.Render();
// ------------------------------------------------------------
// After rendering
_currentTiming = CurrentFrameTiming.AfterRendering;
frameTimingPoints.AfterRendering.DoQueuedEvents();
// ------------------------------------------------------------
// Frame finalizing
_currentTiming = CurrentFrameTiming.FrameFinalizing;
layers.ApplyRemove();
// ------------------------------------------------------------
// End of frame (only internal accessible)
_currentTiming = CurrentFrameTiming.Internal_EndOfFrame;
frameTimingPoints.InternalEndOfFrame.DoQueuedEvents();
// ------------------------------------------------------------
// Out of frame loop
_currentTiming = CurrentFrameTiming.OutOfFrameLoop;
ContextAssociatedMemorySafety.CollectIfExist(OwnerScreen);
if (_state == RenderingAreaLifeState.Dead)
{
Dispose();
}
}
