diff --git a/ext/native/thin3d/GLQueueRunner.h b/ext/native/thin3d/GLQueueRunner.h
index b813b77026..1c805f3eed 100644
--- a/ext/native/thin3d/GLQueueRunner.h
+++ b/ext/native/thin3d/GLQueueRunner.h
@@ -344,7 +344,7 @@ private:
 
 	GLRFramebuffer *curFB_ = nullptr;
 
-	GLuint globalVAO_;
+	GLuint globalVAO_ = 0;
 
 	GLint curFramebuffer_ = 0;
 	int curFBWidth_ = 0;
@@ -357,7 +357,7 @@ private:
 	GLint readbackBuffer_ = 0;
 	int readbackBufferSize_ = 0;
 
-	float maxAnisotropyLevel_;
+	float maxAnisotropyLevel_ = 0.0f;
 
 	// Framebuffer state?
 	GLuint currentDrawHandle_ = 0;
diff --git a/ext/native/thin3d/thin3d_gl.cpp b/ext/native/thin3d/thin3d_gl.cpp
index dec2b0b5a3..05aed08ef1 100644
--- a/ext/native/thin3d/thin3d_gl.cpp
+++ b/ext/native/thin3d/thin3d_gl.cpp
@@ -395,12 +395,7 @@ public:
 	}
 
 	void SetScissorRect(int left, int top, int width, int height) override {
-		int y = top;
-		if (!curFB_) {
-			// We render "upside down" to the backbuffer since GL is silly.
-			y = targetHeight_ - (top + height);
-		}
-		renderManager_.SetScissor({ left, y, width, height });
+		renderManager_.SetScissor({ left, top, width, height });
 	}
 
 	void SetViewports(int count, Viewport *viewports) override {
@@ -492,7 +487,6 @@ private:
 	int curVBufferOffsets_[4]{};
 	OpenGLBuffer *curIBuffer_ = nullptr;
 	int curIBufferOffset_ = 0;
-	OpenGLFramebuffer *curFB_;
 
 	// Frames in flight is not such a strict concept as with Vulkan until we start using glBufferStorage and fences.
 	// But might as well have the structure ready, and can't hurt to rotate buffers.