1 files changed, 45 insertions, 0 deletions
diff --git a/src/mbgl/shader/fill_uniforms.cpp b/src/mbgl/shader/fill_uniforms.cpp
new file mode 100644
index 0000000000..368cb12fcf
--- /dev/null
+++ b/src/mbgl/shader/fill_uniforms.cpp
@@ -0,0 +1,45 @@
+#include <mbgl/shader/fill_uniforms.hpp>
+#include <mbgl/sprite/sprite_atlas.hpp>
+#include <mbgl/style/property_evaluator.hpp>
+#include <mbgl/tile/tile_id.hpp>
+#include <mbgl/map/transform_state.hpp>
+
+namespace mbgl {
+
+using namespace style;
+
+FillPatternUniforms::Values
+FillPatternUniforms::values(mat4 matrix,
+                            float opacity,
+                            Size framebufferSize,
+                            const SpriteAtlasPosition& a,
+                            const SpriteAtlasPosition& b,
+                            const Faded<std::string>& fading,
+                            const UnwrappedTileID& tileID,
+                            const TransformState& state)
+{
+    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 FillPatternUniforms::Values {
+        matrix,
+        opacity,
+        framebufferSize,
+        a.tl,
+        a.br,
+        b.tl,
+        b.br,
+        a.size,
+        b.size,
+        fading.fromScale,
+        fading.toScale,
+        fading.t,
+        0,
+        std::array<float, 2> {{ float(pixelX >> 16), float(pixelY >> 16) }},
+        std::array<float, 2> {{ float(pixelX & 0xFFFF), float(pixelY & 0xFFFF) }},
+        1.0f / tileID.pixelsToTileUnits(1.0f, state.getIntegerZoom())
+    };
+}
+
+} // namespace mbgl