[core] Use separate shaders for background and clipping

1 files changed, 83 insertions, 0 deletions

diff --git a/src/mbgl/programs/background_program.hpp b/src/mbgl/programs/background_program.hpp
new file mode 100644
index 0000000000..b76318938c
--- /dev/null
+++ b/src/mbgl/programs/background_program.hpp
@@ -0,0 +1,83 @@
+#pragma once
+
+#include <mbgl/programs/program.hpp>
+#include <mbgl/programs/attributes.hpp>
+#include <mbgl/programs/uniforms.hpp>
+#include <mbgl/shaders/background.hpp>
+#include <mbgl/shaders/background_pattern.hpp>
+#include <mbgl/util/geometry.hpp>
+#include <mbgl/util/mat4.hpp>
+#include <mbgl/util/size.hpp>
+#include <mbgl/style/layers/background_layer_properties.hpp>
+
+#include <string>
+
+namespace mbgl {
+
+class ImagePosition;
+class UnwrappedTileID;
+class TransformState;
+template <class> class Faded;
+
+using BackgroundLayoutAttributes = PositionOnlyLayoutAttributes;
+
+struct BackgroundUniforms : gl::Uniforms<
+    uniforms::u_matrix,
+    uniforms::u_color,
+    uniforms::u_opacity>
+{};
+
+struct BackgroundPatternUniforms : gl::Uniforms<
+    uniforms::u_matrix,
+    uniforms::u_opacity,
+    uniforms::u_texsize,
+    uniforms::u_pattern_tl_a,
+    uniforms::u_pattern_br_a,
+    uniforms::u_pattern_tl_b,
+    uniforms::u_pattern_br_b,
+    uniforms::u_pattern_size_a,
+    uniforms::u_pattern_size_b,
+    uniforms::u_scale_a,
+    uniforms::u_scale_b,
+    uniforms::u_mix,
+    uniforms::u_image,
+    uniforms::u_pixel_coord_upper,
+    uniforms::u_pixel_coord_lower,
+    uniforms::u_tile_units_to_pixels>
+{
+    static Values values(mat4 matrix,
+                         float opacity,
+                         Size atlasSize,
+                         const ImagePosition&,
+                         const ImagePosition&,
+                         const Faded<std::string>&,
+                         const UnwrappedTileID&,
+                         const TransformState&);
+};
+
+class BackgroundProgram : public Program<
+    shaders::background,
+    gl::Triangle,
+    BackgroundLayoutAttributes,
+    BackgroundUniforms,
+    style::Properties<>>
+{
+public:
+    using Program::Program;
+};
+
+class BackgroundPatternProgram : public Program<
+    shaders::background_pattern,
+    gl::Triangle,
+    BackgroundLayoutAttributes,
+    BackgroundPatternUniforms,
+    style::Properties<>>
+{
+public:
+    using Program::Program;
+};
+
+using BackgroundLayoutVertex = BackgroundProgram::LayoutVertex;
+using BackgroundAttributes = BackgroundProgram::Attributes;
+
+} // namespace mbgl