Remove some of unused legacy uniforms (maplibre#3481)

Author: alexcristici

src/mbgl/shaders/uniforms.hpp

@@ -7,17 +7,14 @@
 namespace mbgl {
 namespace uniforms {
 
-// Uniforms common to several shaders.
-
+// Legacy matrix uniform used in legacy shader ClippingMaskProgram
 MBGL_DEFINE_UNIFORM_MATRIX(double, 4, matrix);
+
+// Legacy uniforms needed by layer properties templates, not used in shaders.
+// Shaders are using UBOs in drawable architecture.
 MBGL_DEFINE_UNIFORM_SCALAR(float, opacity);
 MBGL_DEFINE_UNIFORM_SCALAR(Color, color);
 MBGL_DEFINE_UNIFORM_SCALAR(float, blur);
-
-MBGL_DEFINE_UNIFORM_SCALAR(float, zoom);
-MBGL_DEFINE_UNIFORM_SCALAR(float, collision_y_stretch);
-MBGL_DEFINE_UNIFORM_SCALAR(float, pitch);
-MBGL_DEFINE_UNIFORM_SCALAR(float, bearing);
 MBGL_DEFINE_UNIFORM_SCALAR(float, radius);
 MBGL_DEFINE_UNIFORM_SCALAR(float, stroke_width);
 MBGL_DEFINE_UNIFORM_SCALAR(Color, stroke_color);
@@ -33,39 +30,9 @@ MBGL_DEFINE_UNIFORM_SCALAR(float, width);
 MBGL_DEFINE_UNIFORM_SCALAR(float, floorwidth);
 MBGL_DEFINE_UNIFORM_SCALAR(float, gapwidth);
 MBGL_DEFINE_UNIFORM_SCALAR(float, offset);
-MBGL_DEFINE_UNIFORM_SCALAR(Size, world);
-MBGL_DEFINE_UNIFORM_SCALAR(Size, texsize);
-MBGL_DEFINE_UNIFORM_SCALAR(Size, texsize_icon);
-MBGL_DEFINE_UNIFORM_SCALAR(bool, pitch_with_map);
-MBGL_DEFINE_UNIFORM_SCALAR(float, camera_to_center_distance);
-MBGL_DEFINE_UNIFORM_SCALAR(float, device_pixel_ratio);
-MBGL_DEFINE_UNIFORM_SCALAR(float, fade);
-MBGL_DEFINE_UNIFORM_SCALAR(float, fade_change);
 MBGL_DEFINE_UNIFORM_SCALAR(float, weight);
-
-MBGL_DEFINE_UNIFORM_VECTOR(float, 2, extrude_scale);
-
-namespace heatmap {
-MBGL_DEFINE_UNIFORM_SCALAR(float, extrude_scale);
-} // namespace heatmap
-
 MBGL_DEFINE_UNIFORM_VECTOR(uint16_t, 4, pattern_from);
 MBGL_DEFINE_UNIFORM_VECTOR(uint16_t, 4, pattern_to);
-MBGL_DEFINE_UNIFORM_VECTOR(float, 4, scale);
-MBGL_DEFINE_UNIFORM_VECTOR(uint16_t, 2, pattern_tl_a);
-MBGL_DEFINE_UNIFORM_VECTOR(uint16_t, 2, pattern_br_a);
-MBGL_DEFINE_UNIFORM_VECTOR(uint16_t, 2, pattern_tl_b);
-MBGL_DEFINE_UNIFORM_VECTOR(uint16_t, 2, pattern_br_b);
-MBGL_DEFINE_UNIFORM_VECTOR(float, 2, pattern_size_a);
-MBGL_DEFINE_UNIFORM_VECTOR(float, 2, pattern_size_b);
-MBGL_DEFINE_UNIFORM_VECTOR(float, 2, pixel_coord_upper);
-MBGL_DEFINE_UNIFORM_VECTOR(float, 2, pixel_coord_lower);
-
-MBGL_DEFINE_UNIFORM_SCALAR(float, mix);
-MBGL_DEFINE_UNIFORM_SCALAR(float, scale_a);
-MBGL_DEFINE_UNIFORM_SCALAR(float, scale_b);
-MBGL_DEFINE_UNIFORM_SCALAR(float, tile_units_to_pixels);
-MBGL_DEFINE_UNIFORM_SCALAR(float, overscale_factor);
 
 } // namespace uniforms
 } // namespace mbgl