public void RenderLightScattering(GameObject root, Camera camera)
{
GL.BlendFunc(BlendingFactorSrc.One, BlendingFactorDest.One);
root.Foreach <LightScatteringComponent>((GameObject go, LightScatteringComponent ls) => {
foreach (DirectionalLight dl in go.GetComponents <DirectionalLight>())
{
Framebuffer current = Framebuffer.Current;
framebuffer.Bind();
GL.Viewport(0, 0, width / 2, height / 2);
skyboxshader.Bind();
skyboxshader.SetUniform("lightDir", dl.Direction);
Matrix4 view = camera.ViewMatrix;
skyboxshader.SetUniform("view_matrix", false, ref view);
GL.DrawArrays(PrimitiveType.Triangles, 0, 36);
framebuffer2.Bind();
GL.Viewport(0, 0, width / 4, height / 4);
radialblurshader.Bind();
Vector4 orlightpos = Vector4.Transform(new Vector4(dl.Direction.Normalized(), 1), view);
Vector2 lightpos = orlightpos.Xy / orlightpos.W;
lightpos += new Vector2(1, 1);
lightpos /= 2;
radialblurshader.SetUniform("lightpos", lightpos);
colortexture.Bind(TextureUnit.Texture4);
GL.DrawArrays(PrimitiveType.Triangles, 0, 6);
current.Bind();
GL.Enable(EnableCap.Blend);
GL.Viewport(0, 0, width, height);
finalshader.Bind();
finalshader.SetUniform("lightcolor", ls.HasSpecialColor() ? ls.RayColor : dl.Color);
colortexture2.Bind(TextureUnit.Texture5);
GL.DrawArrays(PrimitiveType.Triangles, 0, 6);
GL.Disable(EnableCap.Blend);
}
});
}
public void RenderLight(Camera camera, GameObject root, Vector3 ambientlight)
{
Matrix4 view = camera.ViewMatrix;
Matrix4 mvp = camera.CameraMatrix;
skyboxshader.Bind();
skyboxshader.SetUniform("view_matrix", false, ref view);
GL.DepthMask(false);
GL.DrawArrays(PrimitiveType.Triangles, 0, 36);
GL.DepthMask(true);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
ambientlightshader.Bind();
ambientlightshader.SetUniform("lightColor", ambientlight);
GL.DrawArrays(PrimitiveType.Triangles, 0, 6);
GL.BlendFunc(BlendingFactorSrc.One, BlendingFactorDest.One);
directionallightshader.Bind();
directionallightshader.SetUniform("viewPos", camera.Position);
directionallightshader.BindUniformBlock("lights", 0);
lightrenderer.RenderLight <DirectionalLight>(root, 6);
pointlightshader.Bind();
pointlightshader.SetUniform("viewPos", camera.Position);
pointlightshader.SetUniform("mvp", false, ref mvp);
pointlightshader.BindUniformBlock("lights", 0);
lightrenderer.RenderLight <PointLight>(root, 36);
spotlightshader.Bind();
spotlightshader.SetUniform("viewPos", camera.Position);
spotlightshader.SetUniform("mvp", false, ref mvp);
spotlightshader.BindUniformBlock("lights", 0);
lightrenderer.RenderLight <SpotLight>(root, 36);
GL.Disable(EnableCap.Blend);
}
private void RenderGame(object sender, FrameEventArgs e)
{
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
if (wireframe)
{
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Line);
GL.Disable(EnableCap.CullFace);
Matrix4 mvp = camera.CameraMatrix;
worldshader.SetUniform("mvp", false, ref mvp);
worldshader.Bind();
model.Draw(root);
GL.PolygonMode(MaterialFace.FrontAndBack, PolygonMode.Fill);
GL.Enable(EnableCap.CullFace);
}
else
{
gBuffer.Bind();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
worldshader.Bind();
Matrix4 mvp = camera.CameraMatrix;
worldshader.SetUniform("mvp", false, ref mvp);
model.Draw(root);
root.WorldRender(camera);
lightBuffer.Bind();
gPosition.Bind(TextureUnit.Texture0);
gNormal.Bind(TextureUnit.Texture1);
gAlbedo.Bind(TextureUnit.Texture2);
gLight.Bind(TextureUnit.Texture3);
lightManager.RenderLight(camera, root, ambientlight);
root.LightRender(camera);
if (lightscattering)
{
lsr.RenderLightScattering(root, camera);
}
if (bloom)
{
bloomshader.Bind();
bloomFramebuffer.Bind();
lightTexture.Bind(TextureUnit.Texture0);
GL.DrawArrays(PrimitiveType.Triangles, 0, 6);
GL.Viewport(0, 0, (int)(Width / 2f), (int)(Height / 2f));
gaussianblurshader.Bind();
blurFramebuffer[0].Bind();
bloomTexture.Bind(TextureUnit.Texture0);
gaussianblurshader.SetUniform("horizontal", 1);
GL.DrawArrays(PrimitiveType.Triangles, 0, 6);
blurFramebuffer[1].Bind();
blurTexture[0].Bind(TextureUnit.Texture0);
gaussianblurshader.SetUniform("horizontal", 0);
GL.DrawArrays(PrimitiveType.Triangles, 0, 6);
}
blurFramebuffer[0].Unbind();
GL.Viewport(0, 0, Width, Height);
ppshader.Bind();
Matrix4 pmvp = camera.PreviousCameraMatrix;
ppshader.SetUniform("premvp", false, ref pmvp);
Matrix4 invmvp = camera.CameraMatrix.Inverted();
ppshader.SetUniform("invmvp", false, ref invmvp);
blurTexture[1].Bind(TextureUnit.Texture1);
lightTexture.Bind(TextureUnit.Texture0);
gDepth.Bind(TextureUnit.Texture2);
GL.Enable(EnableCap.Blend);
GL.DrawArrays(PrimitiveType.Triangles, 0, 6);
GL.Disable(EnableCap.Blend);
}
this.SwapBuffers();
}