[core] add shader defines for enabling/disabling attributes/uniforms for DDS

1 files changed, 38 insertions, 2 deletions

diff --git a/src/mbgl/shaders/fill.cpp b/src/mbgl/shaders/fill.cpp
index 0b775273d2..8f5f304014 100644
--- a/src/mbgl/shaders/fill.cpp
+++ b/src/mbgl/shaders/fill.cpp
@@ -11,28 +11,64 @@ attribute vec2 a_pos;
 
 uniform mat4 u_matrix;
 
+
+#ifndef HAS_UNIFORM_u_color
 uniform lowp float a_color_t;
 attribute highp vec4 a_color;
 varying highp vec4 color;
+#else
+uniform highp vec4 u_color;
+#endif
+
+#ifndef HAS_UNIFORM_u_opacity
 uniform lowp float a_opacity_t;
 attribute lowp vec2 a_opacity;
 varying lowp float opacity;
+#else
+uniform lowp float u_opacity;
+#endif
 
 void main() {
+
+#ifndef HAS_UNIFORM_u_color
     color = unpack_mix_vec4(a_color, a_color_t);
+#else
+    highp vec4 color = u_color;
+#endif
+
+#ifndef HAS_UNIFORM_u_opacity
     opacity = unpack_mix_vec2(a_opacity, a_opacity_t);
+#else
+    lowp float opacity = u_opacity;
+#endif
 
     gl_Position = u_matrix * vec4(a_pos, 0, 1);
 }
 
 )MBGL_SHADER";
 const char* fill::fragmentSource = R"MBGL_SHADER(
+
+#ifndef HAS_UNIFORM_u_color
 varying highp vec4 color;
+#else
+uniform highp vec4 u_color;
+#endif
+
+#ifndef HAS_UNIFORM_u_opacity
 varying lowp float opacity;
+#else
+uniform lowp float u_opacity;
+#endif
 
 void main() {
-    
-    
+
+#ifdef HAS_UNIFORM_u_color
+    highp vec4 color = u_color;
+#endif
+
+#ifdef HAS_UNIFORM_u_opacity
+    lowp float opacity = u_opacity;
+#endif
 
     gl_FragColor = color * opacity;