From ac7c744dfb6e87481eea7081b84c5ae2f585ee7b Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 26 Jul 2009 19:06:34 +0000
Subject: [PATCH] Disable blend and depth test while rendering Bloom Restore
 original FBO after rendering ShadowMap

---
 source/bloom.cpp     | 8 ++++++++
 source/shadowmap.cpp | 7 ++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/source/bloom.cpp b/source/bloom.cpp
index b9e62698..b74bde80 100644
--- a/source/bloom.cpp
+++ b/source/bloom.cpp
@@ -7,8 +7,11 @@ Distributed under the LGPL
 
 #include <cmath>
 #include <msp/strings/formatter.h>
+#include "blend.h"
 #include "bloom.h"
 #include "meshbuilder.h"
+#include "misc.h"
+#include "tests.h"
 #include "texunit.h"
 
 using namespace std;
@@ -130,6 +133,8 @@ void Bloom::render(const Texture2D &src)
 	blur_shader.bind();
 	fbo.bind();
 	src.bind_to(0);
+	disable(DEPTH_TEST);
+	disable(BLEND);
 	for(unsigned i=0; i<2; ++i)
 	{
 		fbo.attach(COLOR_ATTACHMENT0, tex[i], 0);
@@ -151,6 +156,9 @@ void Bloom::render(const Texture2D &src)
 	Texture::unbind();
 	TexUnit::activate(0);
 	Texture::unbind();
+	// XXX Should check if the modes were enabled in the first place
+	enable(DEPTH_TEST);
+	enable(BLEND);
 }
 
 } // namespace GL
diff --git a/source/shadowmap.cpp b/source/shadowmap.cpp
index 9c8b57bf..3691773a 100644
--- a/source/shadowmap.cpp
+++ b/source/shadowmap.cpp
@@ -95,7 +95,8 @@ void ShadowMap::prepare()
 		push_matrix();
 		load_matrix(matrix);
 
-		Bind _bind_fbo(fbo);
+		const Framebuffer *old_fbo=Framebuffer::current();
+		fbo.bind();
 		glViewport(0, 0, size, size);
 		glClear(GL_DEPTH_BUFFER_BIT);
 		scene.render("shadow");
@@ -104,6 +105,10 @@ void ShadowMap::prepare()
 		pop_matrix();
 		matrix_mode(MODELVIEW);
 		pop_matrix();
+		if(old_fbo)
+			old_fbo->bind();
+		else
+			Framebuffer::unbind();
 	}
 
 	depth_buf.bind_to(3);
-- 
2.45.2