/// <summary>
/// Renders the entire GameEngine2D.
/// </summary>
private void Render()
{
GraphicsUtil.CheckError("Render - Pre");
if (!UseLightEngine)
{
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.Disable(EnableCap.DepthTest);
GL.DepthMask(false);
GL.Viewport(0, 0, Window.Width / Pixelation, Window.Height / Pixelation);
Shaders.ColorMult2DShader.Bind();
MainRenderContext.CalcShadows = false;
Scaler = OriginalScaler;
Adder = OriginalAdder;
GL.Uniform3(ShaderLocations.Common2D.SCALER, new Vector3(Scaler.X, Scaler.Y, MainRenderContext.AspectHelper));
GL.Uniform2(2, ref Adder);
MainRenderContext.Scaler = Scaler;
MainRenderContext.Adder = Adder;
RenderAll(false, null);
return;
}
GraphicsUtil.CheckError("Render - Begin");
if (Lights.Count > 0)
{
GL.BindFramebuffer(FramebufferTarget.Framebuffer, Lights[0].FBO);
GL.DrawBuffer(DrawBufferMode.ColorAttachment0);
}
// TODO: Discard fully out-of-view lights!
if (OneDLights)
{
Shader_Lightmap1D.Bind();
GL.BlendFunc(BlendingFactorSrc.One, BlendingFactorDest.Zero);
GL.Enable(EnableCap.DepthTest);
GL.DepthMask(true);
}
else
{
Shader_Lightmap.Bind();
}
GraphicsUtil.CheckError("Render - Before Light Precalcer");
MainRenderContext.CalcShadows = true;
for (int i = 0; i < Lights.Count; i++)
{
Lights[i].PrepareLightmap();
GraphicsUtil.CheckError("Render - Light Precalcer (Prep)");
Scaler = Lights[i].GetScaler();
GL.Uniform3(ShaderLocations.Common2D.SCALER, new Vector3(Scaler.X, Scaler.Y, MainRenderContext.AspectHelper));
GL.Uniform2(2, Adder = Lights[i].GetAdder());
if (OneDLights)
{
GL.ClearBuffer(ClearBuffer.Depth, 0, new float[] { 1f });
GL.Uniform4(21, new Vector4(ViewCenterInverse.X / OriginalScaler.X, Math.Max(OriginalScaler.X, OriginalScaler.Y), ViewCenterInverse.Y / OriginalScaler.Y + 1.0f, Lights[i].IsSkyLight ? 1.0f : 0.0f));
}
MainRenderContext.Scaler = Scaler;
MainRenderContext.Adder = Adder;
GraphicsUtil.CheckError("Render - Light Precalcer");
RenderAll(true, Lights[i].ShouldShadow);
}
if (OneDLights)
{
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.Disable(EnableCap.DepthTest);
GL.DepthMask(false);
}
MainRenderContext.CalcShadows = false;
GraphicsUtil.CheckError("Render - Lights precalced");
GL.Viewport(0, 0, Window.Width / Pixelation, Window.Height / Pixelation);
Shaders.ColorMult2DShader.Bind();
GL.BindFramebuffer(FramebufferTarget.Framebuffer, c_FBO);
GL.ClearBuffer(ClearBuffer.Color, 0, new float[] { 0, 0, 0, 1 });
Scaler = OriginalScaler;
Adder = OriginalAdder;
GL.Uniform3(ShaderLocations.Common2D.SCALER, new Vector3(Scaler.X, Scaler.Y, MainRenderContext.AspectHelper));
GL.Uniform2(2, ref Adder);
MainRenderContext.Scaler = Scaler;
MainRenderContext.Adder = Adder;
GraphicsUtil.CheckError("Render - Lights prepped");
RenderAll(false, null);
if (OneDLights)
{
Shader_ApplyLights1D.Bind();
}
else
{
Shader_Combine.Bind();
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, l_FBO);
GL.ClearBuffer(ClearBuffer.Color, 0, new float[] { 0, 0, 0, 1 });
Scaler = Vector2.One;
Adder = Vector2.Zero;
GL.Uniform3(ShaderLocations.Common2D.SCALER, new Vector3(Scaler.X, Scaler.Y, MainRenderContext.AspectHelper));
GL.Uniform2(2, ref Adder);
MainRenderContext.Scaler = Scaler;
MainRenderContext.Adder = Adder;
MainRenderContext.Engine = this;
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.One);
GraphicsUtil.CheckError("Render - Setup Lights combine");
for (int i = 0; i < Lights.Count; i++)
{
GL.Uniform2(3, Lights[i].GetSecondScaler(MainRenderContext));
GL.Uniform2(4, Lights[i].GetSecondAdder(MainRenderContext));
GL.Uniform4(6, new Vector4(Lights[i].Color.R, Lights[i].Color.G, Lights[i].Color.B, Lights[i].Color.A));
if (!OneDLights)
{
GL.Uniform1(5, (float)Lights[i].Width);
GL.Uniform1(8, Lights[i].SubDivider);
}
else
{
GL.Uniform1(8, Lights[i].ExtraLightDist);
GL.Uniform4(21, new Vector4(ViewCenterInverse.X / OriginalScaler.X, Math.Max(OriginalScaler.X, OriginalScaler.Y), ViewCenterInverse.Y / OriginalScaler.Y + 1.0f, Lights[i].IsSkyLight ? 1.0f : 0.0f));
}
GL.BindTexture(OneDLights ? TextureTarget.Texture1D : TextureTarget.Texture2D, Lights[i].FBO_Tex);
RenderHelper.RenderRectangle(MainRenderContext, -1, -1, 1, 1);
}
GraphicsUtil.CheckError("Render - Lights combined");
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.ActiveTexture(TextureUnit.Texture1);
GL.BindTexture(TextureTarget.Texture2D, l_FBO_Tex);
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, c_FBO_Tex);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.DrawBuffer(DrawBufferMode.Back);
Shader_Addlighttoscene.Bind();
Scaler = Vector2.One;
Adder = Vector2.Zero;
GL.Uniform3(ShaderLocations.Common2D.SCALER, new Vector3(Scaler.X, Scaler.Y, MainRenderContext.AspectHelper));
GL.Uniform2(2, ref Adder);
MainRenderContext.Scaler = Scaler;
MainRenderContext.Adder = Adder;
GL.Viewport(0, 0, Window.Width, Window.Height);
RenderHelper.RenderRectangle(MainRenderContext, -1, -1, 1, 1);
GraphicsUtil.CheckError("Render - Added");
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.ActiveTexture(TextureUnit.Texture1);
GL.BindTexture(TextureTarget.Texture2D, 0);
GL.ActiveTexture(TextureUnit.Texture0);
Shaders.ColorMult2DShader.Bind();
GraphicsUtil.CheckError("Render - Complete");
}