fix ssao frame buffer binding

core/src/main/java/com/seibel/distanthorizons/core/render/glObject/GLState.java

@@ -23,11 +23,13 @@ import org.lwjgl.opengl.GL32;
 
 public class GLState
 {
+	private static final int FBO_MAX = 4;
+	
 	public int program;
 	public int vao;
 	public int vbo;
 	public int ebo;
-	public int fbo;
+	public int[] fbo;
 	public int texture2D;
 	/** IE: GL_TEXTURE0, GL_TEXTURE1, etc. */
 	public int activeTextureNumber;
@@ -54,6 +56,8 @@ public class GLState
 	
 	
 	public GLState() {
+		this.fbo = new int[FBO_MAX];
+		
 		this.saveState();
 	}
 	
@@ -63,7 +67,8 @@ public class GLState
 		this.vao = GL32.glGetInteger(GL32.GL_VERTEX_ARRAY_BINDING);
 		this.vbo = GL32.glGetInteger(GL32.GL_ARRAY_BUFFER_BINDING);
 		this.ebo = GL32.glGetInteger(GL32.GL_ELEMENT_ARRAY_BUFFER_BINDING);
-		this.fbo = GL32.glGetInteger(GL32.GL_FRAMEBUFFER_BINDING);
+		
+		GL32.glGetIntegerv(GL32.GL_FRAMEBUFFER_BINDING, this.fbo);
 		
 		this.texture2D = GL32.glGetInteger(GL32.GL_TEXTURE_BINDING_2D);
 		this.activeTextureNumber = GL32.glGetInteger(GL32.GL_ACTIVE_TEXTURE);
@@ -101,7 +106,7 @@ public class GLState
 	public String toString()
 	{
 		return "GLState{" +
-				"program=" + this.program + ", vao=" + this.vao + ", vbo=" + this.vbo + ", ebo=" + this.ebo + ", fbo=" + this.fbo +
+				"program=" + this.program + ", vao=" + this.vao + ", vbo=" + this.vbo + ", ebo=" + this.ebo + ", fbo=" + this.fbo[0] +
 				", text=" + GLEnums.getString(this.texture2D) + "@" + this.activeTextureNumber + ", text0=" + GLEnums.getString(this.texture0) +
 				", blend=" + this.blend + ", blendMode=" + GLEnums.getString(this.blendSrcColor) + "," + GLEnums.getString(this.blendDstColor) +
 				", depth=" + this.depth +
@@ -113,9 +118,21 @@ public class GLState
 				'}';
 	}
 	
+	public void RestoreFrameBuffer()
+	{
+		for (int i = 0; i < FBO_MAX; i++)
+		{
+			int buffer = this.fbo[i];
+			if (i > 0 && buffer == 0) break;
+			
+			GL32.glBindFramebuffer(GL32.GL_FRAMEBUFFER, GL32.glIsFramebuffer(buffer) ? buffer : 0);
+		}
+	}
+	
 	public void restore()
 	{
-		GL32.glBindFramebuffer(GL32.GL_FRAMEBUFFER, GL32.glIsFramebuffer(this.fbo) ? this.fbo : 0);
+		this.RestoreFrameBuffer();
+		
 		if (this.blend)
 		{
 			GL32.glEnable(GL32.GL_BLEND);

core/src/main/java/com/seibel/distanthorizons/core/render/renderer/LodRenderer.java

@@ -176,8 +176,6 @@ public class LodRenderer
 			return;
 		}
 		
-		
-		
 		if (!renderLock.tryLock())
 		{
 			// never lock the render thread, if the lock isn't available don't wait for it
@@ -285,7 +283,7 @@ public class LodRenderer
 			if (Config.Client.Advanced.Graphics.Ssao.enabled.get())
 			{
 				profiler.popPush("LOD SSAO");
-				SSAORenderer.INSTANCE.render(partialTicks);
+				SSAORenderer.INSTANCE.render(minecraftGlState, partialTicks);
 			}
 			
 			

core/src/main/java/com/seibel/distanthorizons/core/render/renderer/shaders/AbstractShaderRenderer.java

@@ -99,7 +99,7 @@ public abstract class AbstractShaderRenderer
 		int width = MC_RENDER.getTargetFrameBufferViewportWidth();
 		int height = MC_RENDER.getTargetFrameBufferViewportHeight();
 		
-		GL32.glBindFramebuffer(GL32.GL_FRAMEBUFFER, MC_RENDER.getTargetFrameBuffer());
+		//GL32.glBindFramebuffer(GL32.GL_FRAMEBUFFER, MC_RENDER.getTargetFrameBuffer());
 		GL32.glViewport(0, 0, width, height);
 		GL32.glDisable(GL32.GL_DEPTH_TEST);
 		GL32.glDisable(GL32.GL_SCISSOR_TEST);
@@ -118,7 +118,7 @@ public abstract class AbstractShaderRenderer
 		GL32.glDrawArrays(GL32.GL_TRIANGLES, 0, 6);
 		
 		// explicitly unbinding the frame buffer is necessary to prevent GL_CLEAR calls from hitting the wrong buffer
-		GL32.glBindFramebuffer(GL32.GL_FRAMEBUFFER, 0);
+		//GL32.glBindFramebuffer(GL32.GL_FRAMEBUFFER, 0);
 		
 		state.restore();
 	}

core/src/main/java/com/seibel/distanthorizons/core/render/renderer/shaders/SSAORenderer.java

@@ -179,7 +179,7 @@ public class SSAORenderer
 	// render //
 	//========//
 	
-	public void render(float partialTicks)
+	public void render(GLState primaryState, float partialTicks)
 	{
 		GLState state = new GLState();
 		
@@ -239,7 +239,8 @@ public class SSAORenderer
 		
 		this.applyShader.bind();
 		
-		GL32.glBindFramebuffer(GL32.GL_FRAMEBUFFER, MC_RENDER.getTargetFrameBuffer());
+		//GL32.glBindFramebuffer(GL32.GL_FRAMEBUFFER, MC_RENDER.getTargetFrameBuffer());
+		primaryState.RestoreFrameBuffer();
 		
 		GL32.glEnable(GL11.GL_BLEND);
 		GL32.glBlendEquation(GL32.GL_FUNC_ADD);