1 files changed, 30 insertions, 0 deletions
diff --git a/gfx/wr/webrender/res/debug_font.glsl b/gfx/wr/webrender/res/debug_font.glsl
new file mode 100644
index 0000000000..3b08f1b2fe
--- /dev/null
+++ b/gfx/wr/webrender/res/debug_font.glsl
@@ -0,0 +1,30 @@
+/* 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/. */
+
+#define WR_FEATURE_TEXTURE_2D
+
+#include shared,shared_other
+
+varying highp vec2 vColorTexCoord;
+varying mediump vec4 vColor;
+
+#ifdef WR_VERTEX_SHADER
+in vec4 aColor;
+in vec2 aColorTexCoord;
+
+void main(void) {
+    vColor = aColor;
+    vColorTexCoord = aColorTexCoord;
+    vec4 pos = vec4(aPosition, 0.0, 1.0);
+    pos.xy = floor(pos.xy + 0.5);
+    gl_Position = uTransform * pos;
+}
+#endif
+
+#ifdef WR_FRAGMENT_SHADER
+void main(void) {
+    float alpha = texture(sColor0, vColorTexCoord).r;
+    oFragColor = vColor * alpha;
+}
+#endif