From 9994ccb3422b88649eb160bf373d4d29b08a4768 Mon Sep 17 00:00:00 2001
From: Jules Blok <jules.blok@gmail.com>
Date: Sat, 8 Nov 2014 15:08:41 +0100
Subject: [PATCH] PostProcessing: Invalidate shader when anaglyph stereoscopy
 is toggled.

---
 Source/Core/VideoBackends/OGL/PostProcessing.cpp | 5 ++++-
 Source/Core/VideoBackends/OGL/PostProcessing.h   | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Source/Core/VideoBackends/OGL/PostProcessing.cpp b/Source/Core/VideoBackends/OGL/PostProcessing.cpp
index 84088459ed..80bdf8eef4 100644
--- a/Source/Core/VideoBackends/OGL/PostProcessing.cpp
+++ b/Source/Core/VideoBackends/OGL/PostProcessing.cpp
@@ -38,6 +38,7 @@ static char s_vertex_shader[] =
 
 OpenGLPostProcessing::OpenGLPostProcessing()
 	: m_initialized(false)
+	, m_anaglyph(false)
 {
 	CreateHeader();
 
@@ -160,7 +161,8 @@ void OpenGLPostProcessing::BlitFromTexture(TargetRectangle src, TargetRectangle
 void OpenGLPostProcessing::ApplyShader()
 {
 	// shader didn't changed
-	if (m_initialized && m_config.GetShader() == g_ActiveConfig.sPostProcessingShader)
+	if (m_initialized && m_config.GetShader() == g_ActiveConfig.sPostProcessingShader &&
+			((g_ActiveConfig.iStereoMode == STEREO_ANAGLYPH) == m_anaglyph))
 		return;
 
 	m_shader.Destroy();
@@ -222,6 +224,7 @@ void OpenGLPostProcessing::ApplyShader()
 		std::string glsl_name = "option_" + it.first;
 		m_uniform_bindings[it.first] = glGetUniformLocation(m_shader.glprogid, glsl_name.c_str());
 	}
+	m_anaglyph = g_ActiveConfig.iStereoMode == STEREO_ANAGLYPH;
 	m_initialized = true;
 }
 
diff --git a/Source/Core/VideoBackends/OGL/PostProcessing.h b/Source/Core/VideoBackends/OGL/PostProcessing.h
index 4c67eca839..e2be0bdc7d 100644
--- a/Source/Core/VideoBackends/OGL/PostProcessing.h
+++ b/Source/Core/VideoBackends/OGL/PostProcessing.h
@@ -28,6 +28,7 @@ public:
 
 private:
 	bool m_initialized;
+	bool m_anaglyph;
 	SHADER m_shader;
 	GLuint m_uniform_resolution;
 	GLuint m_uniform_src_rect;