Fixed 3d arrow rendering on Samsung Galaxy Nexus.

1 files changed, 17 insertions, 2 deletions

diff --git a/drape/shaders/arrow3d_fragment_shader.fsh b/drape/shaders/arrow3d_fragment_shader.fsh
index bcdff2015e..467ec1587e 100644
--- a/drape/shaders/arrow3d_fragment_shader.fsh
+++ b/drape/shaders/arrow3d_fragment_shader.fsh
@@ -1,9 +1,24 @@
 varying float v_intensity;
 
+#ifdef SAMSUNG_GOOGLE_NEXUS
+uniform sampler2D u_colorTex;
+#endif
+
 const vec3 color = vec3(0.0, 0.75, 1.0);
 
 void main()
 {
-  gl_FragColor.rgb = (v_intensity * 0.4 + 0.6) * color;
-  gl_FragColor.a = 1.0;
+#ifdef SAMSUNG_GOOGLE_NEXUS
+  // Because of a bug in OpenGL driver on Samsung Google Nexus this workaround is here.
+  const float kFakeColorScalar = 0.0;
+  lowp vec4 fakeColor = texture2D(u_colorTex, vec2(0.0, 0.0)) * kFakeColorScalar;
+#endif
+
+  vec4 resColor = vec4((v_intensity * 0.4 + 0.6) * color, 1.0);
+  
+#ifdef SAMSUNG_GOOGLE_NEXUS
+  gl_FragColor = resColor + fakeColor;
+#else
+  gl_FragColor = resColor;
+#endif
 }