diff --git a/source/common/rendering/gl/system/gl_framebuffer.cpp b/source/common/rendering/gl/system/gl_framebuffer.cpp
index 047e116a1..ee37dc7fa 100644
--- a/source/common/rendering/gl/system/gl_framebuffer.cpp
+++ b/source/common/rendering/gl/system/gl_framebuffer.cpp
@@ -432,20 +432,20 @@ void OpenGLFrameBuffer::PostProcessScene(int fixedcm, const std::function<void()
 
 void videoShowFrame(int32_t w)
 {
-    static GLenum buffers[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
+	static GLenum buffers[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
 
-    if (gl_ssao)
-    {
-        glDrawBuffers(1, buffers);
-        OpenGLRenderer::GLRenderer->AmbientOccludeScene(GLInterface.GetMatrix(Matrix_Projection).get()[5]);
+	if (gl_ssao)
+	{
+		glDrawBuffers(1, buffers);
+		OpenGLRenderer::GLRenderer->AmbientOccludeScene(GLInterface.GetProjectionM5());
 		glViewport(screen->mSceneViewport.left, screen->mSceneViewport.top, screen->mSceneViewport.width, screen->mSceneViewport.height);
-        OpenGLRenderer::GLRenderer->mBuffers->BindSceneFB(true);
-        glDrawBuffers(3, buffers);
+		OpenGLRenderer::GLRenderer->mBuffers->BindSceneFB(true);
+		glDrawBuffers(3, buffers);
 
 		// To do: the translucent part of the scene should be drawn here
 
 		glDrawBuffers(1, buffers);
-    }
+	}
 
 	OpenGLRenderer::GLRenderer->mBuffers->BlitSceneToTexture(); // Copy the resulting scene to the current post process texture
 	screen->PostProcessScene(0, []() {
diff --git a/source/glbackend/glbackend.cpp b/source/glbackend/glbackend.cpp
index bd04412fc..176eee4fa 100644
--- a/source/glbackend/glbackend.cpp
+++ b/source/glbackend/glbackend.cpp
@@ -317,6 +317,7 @@ void GLInstance::UnbindAllTextures()
 
 void GLInstance::SetMatrix(int num, const VSMatrix *mat)
 {
+	if (num == Matrix_Projection) mProjectionM5 = mat->get()[5];
 	renderState.matrixIndex[num] = matrixArray.Size();
 	matrixArray.Push(*mat);
 }
diff --git a/source/glbackend/glbackend.h b/source/glbackend/glbackend.h
index 7369659c2..d5e497dd4 100644
--- a/source/glbackend/glbackend.h
+++ b/source/glbackend/glbackend.h
@@ -199,8 +199,7 @@ class GLInstance
 	int LastVB_Offset[2] = {};
 	IIndexBuffer* LastIndexBuffer = nullptr;
 
-
-	VSMatrix matrices[NUMMATRICES];
+	float mProjectionM5 = 1.0f; // needed by ssao
 	PolymostRenderState renderState;
 	FShader* activeShader;
 	PolymostShader* polymostShader;
@@ -260,10 +259,7 @@ public:
 		LastIndexBuffer = (IIndexBuffer*)~intptr_t(0);
 	}
 
-	const VSMatrix &GetMatrix(int num)
-	{
-		return matrices[num];
-	}
+	float GetProjectionM5() { return mProjectionM5; }
 	void SetMatrix(int num, const VSMatrix *mat );
 	void SetMatrix(int num, const float *mat)
 	{