private InvokeOnDisposal bindFrameBuffer(FrameBuffer frameBuffer, Vector2 requestedSize)
{
if (!frameBuffer.IsInitialized)
{
frameBuffer.Initialize();
}
// These additional render buffers are only required if e.g. depth
// or stencil information needs to also be stored somewhere.
foreach (var f in Formats)
{
frameBuffer.Attach(f);
}
// This setter will also take care of allocating a texture of appropriate size within the framebuffer.
frameBuffer.Size = requestedSize;
frameBuffer.Bind();
return(new InvokeOnDisposal(() => frameBuffer.Unbind()));
}
protected override void PreDraw()
{
base.PreDraw();
foreach (var f in formats)
{
frameBuffer.Attach(f);
}
frameBuffer.Size = new Vector2(screenSpaceDrawQuad.Width, screenSpaceDrawQuad.Height);
frameBuffer.Bind();
// Set viewport to the texture size
GLWrapper.PushViewport(new Rectangle(0, 0, frameBuffer.Texture.Width, frameBuffer.Texture.Height));
// We need to draw children as if they were zero-based to the top-left of the texture
// so we make the new zero be this container's position without affecting children in any negative ways
GLWrapper.PushOrtho(new Rectangle((int)screenSpaceDrawQuad.TopLeft.X, (int)screenSpaceDrawQuad.TopLeft.Y, frameBuffer.Texture.Width, frameBuffer.Texture.Height));
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit | ClearBufferMask.StencilBufferBit);
}
/// <summary>
/// Binds and initialises a <see cref="FrameBuffer"/> if required.
/// </summary>
/// <param name="frameBuffer">The <see cref="FrameBuffer"/> to bind.</param>
/// <returns>A token that must be disposed upon finishing use of <paramref name="frameBuffer"/>.</returns>
protected ValueInvokeOnDisposal BindFrameBuffer(FrameBuffer frameBuffer)
{
if (!frameBuffer.IsInitialized)
{
frameBuffer.Initialize(true, filteringMode);
}
if (formats != null)
{
// These additional render buffers are only required if e.g. depth
// or stencil information needs to also be stored somewhere.
foreach (var f in formats)
{
frameBuffer.Attach(f);
}
}
// This setter will also take care of allocating a texture of appropriate size within the frame buffer.
frameBuffer.Size = frameBufferSize;
frameBuffer.Bind();
return(new ValueInvokeOnDisposal(frameBuffer.Unbind));
}
protected override void OnLoad(EventArgs e)
{
//WindowState = OpenTK.WindowState.Fullscreen;
//WindowBorder = OpenTK.WindowBorder.Hidden;
GL.Enable(EnableCap.DepthTest);
_graphicsDevice = new GraphicsDevice(this);
VSync = VSyncMode.On;
_graphicsDevice.ClearColor = new Color4(0.1f, 0.2f, 0.5f, 1.0f);
_3DCamera = new LookAtCamera(_graphicsDevice, new Vector3(0, 0, -5), Vector3.UnitY, Vector3.UnitZ);
_screenCamera = new GuiCamera(_graphicsDevice);
_graphicsDevice.Camera = _3DCamera;
_graphicsDevice.DebugBatch.WorldCamera = _3DCamera;
_graphicsDevice.DebugBatch.ScreenCamera = _screenCamera;
ContentManager content = new ContentManager(new ServiceProvider(), @"..\..\..\Content\");
content.RegisterTypeReader <BitmapFont>(new SpriteFontReader(Shaders.FontShader));
content.RegisterTypeReader <Texture2D>(new Texture2DReader());
content.RegisterTypeReader <Model>(new ModelReader());
_font = content.Get <BitmapFont>(@"SourceCodePro16.meb").Content as BitmapFont;
_graphicsDevice.DebugBatch.DefaultFont = _font;
string vsSrc = @"#version 330
in vec3 Position;
in vec3 Normal;
in vec2 TexCoord;
uniform mat4 WorldViewProj;
out vec2 fragTexCoord;
out vec3 fragNormal;
out vec3 position;
void main() {
fragTexCoord = TexCoord;
fragNormal = Normal;
position = (WorldViewProj * vec4(Position, 1)).xyz;
gl_Position = WorldViewProj * vec4(Position, 1);
}
";
string fsSrc = @"#version 330
#extension GL_ARB_explicit_attrib_location : require
uniform sampler2D Texture;
in vec2 fragTexCoord;
in vec3 fragNormal;
in vec3 position;
layout(location = 0) out vec4 diffuseOutput;
layout(location = 1) out vec4 posOutput;
layout(location = 2) out vec4 normOutput;
void main() {
diffuseOutput = texture(Texture, fragTexCoord);
posOutput.xyz = position;
normOutput = vec4(fragNormal * 0.5 + 0.5, 1);
}
";
_defferedShader = new Program(vsSrc, fsSrc);
_depthTexture = Texture2D.CreateEmpty(_graphicsDevice.Width, _graphicsDevice.Height, PixelInternalFormat.DepthComponent24, PixelFormat.DepthComponent, PixelType.UnsignedInt);
_diffuseTexture = Texture2D.CreateEmpty(_graphicsDevice.Width, _graphicsDevice.Height);
_normalTexture = Texture2D.CreateEmpty(_graphicsDevice.Width, _graphicsDevice.Height);
_positionTexture = Texture2D.CreateEmpty(_graphicsDevice.Width, _graphicsDevice.Height);
_fbo = new FrameBuffer(_graphicsDevice);
_fbo.Attach(_diffuseTexture, FramebufferAttachment.ColorAttachment0);
_fbo.Attach(_positionTexture, FramebufferAttachment.ColorAttachment1);
_fbo.Attach(_normalTexture, FramebufferAttachment.ColorAttachment2);
_fbo.Attach(_depthTexture, FramebufferAttachment.DepthAttachment);
_fbo.Unbind();
Utilities.CheckGLError();
_spriteBatch = new SpriteBatch(_graphicsDevice);
_dwarf = content.Get <Model>("\\dwarf1.meb").Content as Model;
_dwarfWorld = Matrix4.Scale(0.5f) * Matrix4.CreateTranslation(0, -1.5f, 0);
}
internal void Attach(RenderbufferInternalFormat format)
{
frameBuffer.Attach(format);
}
