[general] moving ios and android project under ./platform folder

src/mbgl/programs/fill_program.cpp

@@ -0,0 +1,37 @@
+#include <mbgl/programs/fill_program.hpp>
+#include <mbgl/renderer/image_atlas.hpp>
+#include <mbgl/renderer/cross_faded_property_evaluator.hpp>
+#include <mbgl/tile/tile_id.hpp>
+#include <mbgl/map/transform_state.hpp>
+
+namespace mbgl {
+
+using namespace style;
+
+static_assert(sizeof(FillLayoutVertex) == 4, "expected FillLayoutVertex size");
+
+FillPatternProgram::LayoutUniformValues
+FillPatternProgram::layoutUniformValues(mat4 matrix,
+                                        Size framebufferSize,
+                                        Size atlasSize,
+                                        const CrossfadeParameters& crossfade,
+                                        const UnwrappedTileID& tileID,
+                                        const TransformState& state,
+                                        const float pixelRatio) {
+    const auto tileRatio = 1 / tileID.pixelsToTileUnits(1, state.getIntegerZoom());
+    int32_t tileSizeAtNearestZoom = util::tileSize * state.zoomScale(state.getIntegerZoom() - tileID.canonical.z);
+    int32_t pixelX = tileSizeAtNearestZoom * (tileID.canonical.x + tileID.wrap * state.zoomScale(tileID.canonical.z));
+    int32_t pixelY = tileSizeAtNearestZoom * tileID.canonical.y;
+
+    return {
+        uniforms::matrix::Value( matrix ),
+        uniforms::world::Value( framebufferSize ),
+        uniforms::texsize::Value( atlasSize ),
+        uniforms::scale::Value({ {pixelRatio, tileRatio, crossfade.fromScale, crossfade.toScale} } ),
+        uniforms::fade::Value( crossfade.t ),
+        uniforms::pixel_coord_upper::Value( std::array<float, 2> {{ float(pixelX >> 16), float(pixelY >> 16) }}),
+        uniforms::pixel_coord_lower::Value( std::array<float, 2> {{ float(pixelX & 0xFFFF), float(pixelY & 0xFFFF) }} )
+    };
+}
+
+} // namespace mbgl