diff --git a/libobs-opengl/gl-subsystem.c b/libobs-opengl/gl-subsystem.c
index 80b5d3229..ddcea29df 100644
--- a/libobs-opengl/gl-subsystem.c
+++ b/libobs-opengl/gl-subsystem.c
@@ -877,10 +877,25 @@ static inline bool can_render(const gs_device_t *device)
 static void update_viewproj_matrix(struct gs_device *device)
 {
 	struct gs_shader *vs = device->cur_vertex_shader;
-	gs_matrix_get(&device->cur_view);
+	struct matrix4 cur_proj;
 
-	matrix4_mul(&device->cur_viewproj, &device->cur_view,
-			&device->cur_proj);
+	gs_matrix_get(&device->cur_view);
+	matrix4_copy(&cur_proj, &device->cur_proj);
+
+	if (device->cur_fbo) {
+		cur_proj.x.y = -cur_proj.x.y;
+		cur_proj.y.y = -cur_proj.y.y;
+		cur_proj.z.y = -cur_proj.z.y;
+		cur_proj.t.y = -cur_proj.t.y;
+
+		glFrontFace(GL_CW);
+	} else {
+		glFrontFace(GL_CCW);
+	}
+
+	gl_success("glFrontFace");
+
+	matrix4_mul(&device->cur_viewproj, &device->cur_view, &cur_proj);
 	matrix4_transpose(&device->cur_viewproj, &device->cur_viewproj);
 
 	if (vs->viewproj)
diff --git a/libobs/data/format_conversion.effect b/libobs/data/format_conversion.effect
index e58996003..74f29d698 100644
--- a/libobs/data/format_conversion.effect
+++ b/libobs/data/format_conversion.effect
@@ -63,11 +63,7 @@ VertInOut VSDefault(VertInOut vert_in)
 
 float4 PSNV12(VertInOut vert_in) : TARGET
 {
-#ifdef _OPENGL
-	float v_mul = floor((1.0 - vert_in.uv.y) * input_height);
-#else
 	float v_mul = floor(vert_in.uv.y * input_height);
-#endif
 
 	float byte_offset = floor((v_mul + vert_in.uv.x) * width) * 4.0;
 	byte_offset += PRECISION_OFFSET;
@@ -127,11 +123,7 @@ float4 PSNV12(VertInOut vert_in) : TARGET
 
 float4 PSPlanar420(VertInOut vert_in) : TARGET
 {
-#ifdef _OPENGL
-	float v_mul = floor((1.0 - vert_in.uv.y) * input_height);
-#else
 	float v_mul = floor(vert_in.uv.y * input_height);
-#endif
 
 	float byte_offset = floor((v_mul + vert_in.uv.x) * width) * 4.0;
 	byte_offset += PRECISION_OFFSET;
@@ -202,9 +194,6 @@ float4 PSPacked422_Reverse(VertInOut vert_in, int u_pos, int v_pos,
 		int y0_pos, int y1_pos) : TARGET
 {
 	float y = vert_in.uv.y;
-#ifdef _OPENGL
-	y = 1. - y;
-#endif
 	float odd = floor(fmod(width * vert_in.uv.x + PRECISION_OFFSET, 2.0));
 	float x = floor(width_d2 * vert_in.uv.x + PRECISION_OFFSET) *
 			width_d2_i;
@@ -233,9 +222,6 @@ float4 PSPlanar420_Reverse(VertInOut vert_in) : TARGET
 {
 	float x = vert_in.uv.x;
 	float y = vert_in.uv.y;
-#ifdef _OPENGL
-	y = 1. - y;
-#endif
 	float x_offset   = floor(x * width  + PRECISION_OFFSET);
 	float y_offset   = floor(y * height + PRECISION_OFFSET);
 
@@ -258,9 +244,6 @@ float4 PSNV12_Reverse(VertInOut vert_in) : TARGET
 {
 	float x = vert_in.uv.x;
 	float y = vert_in.uv.y;
-#ifdef _OPENGL
-	y = 1. - y;
-#endif
 	float x_offset   = floor(x * width  + PRECISION_OFFSET);
 	float y_offset   = floor(y * height + PRECISION_OFFSET);