1 files changed, 30 insertions, 0 deletions
diff --git a/gfx/layers/d3d11/mlgshaders/clear-vs.hlsl b/gfx/layers/d3d11/mlgshaders/clear-vs.hlsl
new file mode 100644
index 0000000000..5d95fcf611
--- /dev/null
+++ b/gfx/layers/d3d11/mlgshaders/clear-vs.hlsl
@@ -0,0 +1,30 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "common-vs.hlsl"
+#include "clear-common.hlsl"
+
+struct VS_CLEAR_IN
+{
+  float2 vPos : POSITION;
+  int4 vRect : TEXCOORD0;
+};
+
+// Note: we use slot 2 so we don't have to rebind the layer slot (1) to run
+// this shader.
+cbuffer ClearConstants : register(b2) {
+  int sDepth : packoffset(c0.x);
+};
+
+VS_CLEAR_OUT ClearVS(const VS_CLEAR_IN aInput)
+{
+  float4 rect = float4(aInput.vRect.x, aInput.vRect.y, aInput.vRect.z, aInput.vRect.w);
+  float4 screenPos = float4(UnitQuadToRect(aInput.vPos, rect), 0, 1);
+  float4 worldPos = mul(WorldTransform, screenPos);
+  worldPos.z = ComputeDepth(worldPos, sDepth);
+
+  VS_CLEAR_OUT output;
+  output.vPosition = worldPos;
+  return output;
+}