Removes asking GL of current bind framebuffer to avoid syncs.

Tested By: Stan
Differential Revision: https://code.wildfiregames.com/D4422
This was SVN commit r26193.

source/renderer/ShadowMap.cpp

@@ -117,9 +117,6 @@ struct ShadowMapInternals
 	// BeginRender and EndRender while we replace it with the shadow camera
 	CCamera SavedViewCamera;
 
-	// Save the caller's FBO so it can be restored
-	GLint SavedViewFBO;
-
 	void CalculateShadowMatrices(const int cascade);
 	void CreateTexture();
 	void UpdateCascadesParameters();
@@ -488,9 +485,6 @@ void ShadowMapInternals::CreateTexture()
 		Framebuffer = 0;
 	}
 
-	// save the caller's FBO
-	glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &SavedViewFBO);
-
 	glGenFramebuffersEXT(1, &Framebuffer);
 
 	CFG_GET_VAL("shadowquality", QualityLevel);
@@ -605,7 +599,7 @@ void ShadowMapInternals::CreateTexture()
 
 	GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
 
-	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, SavedViewFBO);
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
 
 	if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
 	{

source/renderer/WaterManager.cpp

@@ -238,9 +238,6 @@ int WaterManager::LoadWaterTextures()
 
 	// Create the water framebuffers
 
-	GLint currentFbo;
-	glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &currentFbo);
-
 	m_ReflectionFbo = 0;
 	glGenFramebuffersEXT(1, &m_ReflectionFbo);
 	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_ReflectionFbo);
@@ -288,7 +285,7 @@ int WaterManager::LoadWaterTextures()
 		UpdateQuality();
 	}
 
-	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, currentFbo);
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
 
 	// Enable rendering, now that we've succeeded this far
 	m_RenderWater = true;

source/tools/atlas/GameInterface/ActorViewer.cpp

@@ -505,8 +505,6 @@ void ActorViewer::Render()
 	// Set simulation context for rendering purposes
 	g_Renderer.GetSceneRenderer().SetSimulation(&m.Simulation2);
 
-	g_Renderer.BeginFrame();
-
 	// Find the centre of the interesting region, in the middle of the patch
 	// and half way up the model (assuming there is one)
 	CVector3D centre;
@@ -523,6 +521,8 @@ void ActorViewer::Render()
 
 	g_Renderer.GetSceneRenderer().SetSceneCamera(camera, camera);
 
+	g_Renderer.BeginFrame();
+
 	g_Renderer.GetSceneRenderer().RenderScene(g_Renderer.GetDeviceCommandContext(), m);
 
 	glDisable(GL_DEPTH_TEST);