private static void ConfigureGraphicsContext(Application application, Surface surface)
{
GraphicsContext graphicsContext = new GLGraphicsContext(GraphicsBackend.WebGL2);
graphicsContext.CreateDevice();
SwapChainDescription swapChainDescription = new SwapChainDescription()
{
SurfaceInfo = surface.SurfaceInfo,
Width = surface.Width,
Height = surface.Height,
ColorTargetFormat = PixelFormat.R8G8B8A8_UNorm,
ColorTargetFlags = TextureFlags.RenderTarget | TextureFlags.ShaderResource,
DepthStencilTargetFormat = PixelFormat.D24_UNorm_S8_UInt,
DepthStencilTargetFlags = TextureFlags.DepthStencil,
SampleCount = TextureSampleCount.None,
IsWindowed = true,
RefreshRate = 60
};
var swapChain = graphicsContext.CreateSwapChain(swapChainDescription);
swapChain.VerticalSync = true;
var graphicsPresenter = application.Container.Resolve <GraphicsPresenter>();
var firstDisplay = new Display(surface, swapChain);
graphicsPresenter.AddDisplay("DefaultDisplay", firstDisplay);
application.Container.RegisterInstance(graphicsContext);
}
private GLFrameBuffer(GLGraphicsContext context)
{
this.context = context;
OGL.GenFramebuffers(1, out fboId);
context.CheckForErrorsIfDebugging();
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad (e);
String version = GL.GetString(StringName.Version);
Console.WriteLine("GL version: " + version);
context = GLGraphics.NewContext(Context, true);
program = context.NewProgramFromFiles("Render.vert", "Render.frag");
texture0 = context.NewTexture(TextureMinFilter.Nearest, TextureMagFilter.Nearest, TextureWrapMode.Clamp, TextureWrapMode.Clamp);
texture0.UploadImage(sourceImage);
sourceImage.Dispose();
texture1 = context.NewTexture(TextureMinFilter.Nearest, TextureMagFilter.Nearest, TextureWrapMode.Clamp, TextureWrapMode.Clamp);
texture1.UploadImage(new byte[4 * 4 * 4], 4, 4, PixelInternalFormat.Four, PixelFormat.Rgba, PixelType.UnsignedByte);
CreateAndFillBuffers();
paramSpec = ImmutableList<Tuple<String, Object>>.List(new Tuple<String, Object>[] {
Tuple.Create<String, Object>("a_position", positions),
Tuple.Create<String, Object>("a_texPos", textureCoords),
Tuple.Create<String, Object>("u_texture0", texture0),
Tuple.Create<String, Object>("u_texture1", texture1)});
}
internal GLFrameBuffer(GLRenderBuffer colorBuffer, GLRenderBuffer depthBuffer, FramebufferTarget fbTarget, bool disposeRenderBuffers, GLGraphicsContext context)
: this(context)
{
this.disposeRenderBuffers = disposeRenderBuffers;
this.colorBuffer = colorBuffer;
this.depthBuffer = depthBuffer;
this.fbTarget = fbTarget;
OGL.BindFramebuffer(fbTarget, fboId);
OGL.FramebufferRenderbuffer(fbTarget, FramebufferAttachment.ColorAttachment0,
RenderbufferTarget.Renderbuffer, colorBuffer.Id);
OGL.FramebufferRenderbuffer(fbTarget, FramebufferAttachment.DepthAttachment,
RenderbufferTarget.Renderbuffer, depthBuffer.Id);
FramebufferErrorCode err = OGL.CheckFramebufferStatus(fbTarget);
switch(err) {
case FramebufferErrorCode.FramebufferComplete:
break;
default:
this.Dispose();
throw new Exception(String.Format("Invalid frame buffer status: {0}", err));
}
OGL.BindFramebuffer(fbTarget, 0);
context.CheckForErrorsIfDebugging();
}
internal GLProgram(GLGraphicsContext context, String vertexShader, String fragmentShader)
{
this.context = context;
this.vertexShader = new GLVertexShader(vertexShader);
this.fragmentShader = new GLFragmentShader(fragmentShader);
programId = OGL.CreateProgram();
OGL.AttachShader(programId, this.vertexShader.Id);
OGL.AttachShader(programId, this.fragmentShader.Id);
Link();
}
public TextRenderer(GLGraphicsContext context, int height, int width, String text)
{
this.text = text;
texture = context.NewEmptyTexture(OpenTK.Graphics.OpenGL.TextureMinFilter.Linear, OpenTK.Graphics.OpenGL.TextureMagFilter.Linear,
OpenTK.Graphics.OpenGL.TextureWrapMode.ClampToBorder, OpenTK.Graphics.OpenGL.TextureWrapMode.ClampToBorder,
width, height,
OpenTK.Graphics.OpenGL.PixelFormat.Rgba, OpenTK.Graphics.OpenGL.PixelType.UnsignedByte);
texRenderer = new TextureRenderer(context, texture);
Resize (width, height);
}
internal GLRenderBuffer(int width, int height, RenderbufferStorage storage, GLGraphicsContext context)
{
this.width = width;
this.height = height;
OGL.GenRenderbuffers(1, out renderBufferId);
context.CheckForErrorsIfDebugging();
OGL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, renderBufferId);
OGL.RenderbufferStorage(RenderbufferTarget.Renderbuffer,
storage, width, height);
OGL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, 0);
context.CheckForErrorsIfDebugging();
}
public TextureRenderer(GLGraphicsContext context, GLTexture texture)
{
this.context = context;
texture = context.NewTexture(OpenTK.Graphics.OpenGL.TextureMinFilter.Nearest, OpenTK.Graphics.OpenGL.TextureMagFilter.Nearest,
OpenTK.Graphics.OpenGL.TextureWrapMode.Clamp, OpenTK.Graphics.OpenGL.TextureWrapMode.Clamp);
vertices = context.NewVertexBuffer<Vector3>(OpenTK.Graphics.OpenGL.VertexAttribPointerType.Float,
3);
vertices.UploadVertices(new Vector3[] {
new Vector3(-1, -1, 0),
new Vector3(1, -1, 0),
new Vector3(-1, 1, 0),
new Vector3(1, 1, 0)});
texCoords = context.NewVertexBuffer<Vector2>(OpenTK.Graphics.OpenGL.VertexAttribPointerType.Float,
2);
texCoords.UploadVertices(new Vector2[] {
new Vector2(0, 0),
new Vector2(1, 0),
new Vector2(0, 1),
new Vector2(1, 1)});
prog = context.NewProgram(MVP_VERTEX_SHADER, TEXTURE_SHADER);
paramSpec = ImmutableList<Tuple<String, Object>>.List(
Tuple.Create<String, Object>("a_position", vertices),
Tuple.Create<String, Object>("a_texPos", texCoords),
Tuple.Create<String, Object>("u_texture0", texture));
}
