1 files changed, 53 insertions, 0 deletions
diff --git a/src/mbgl/shader/sdf_shader.hpp b/src/mbgl/shader/sdf_shader.hpp
new file mode 100644
index 0000000000..0737c25ee1
--- /dev/null
+++ b/src/mbgl/shader/sdf_shader.hpp
@@ -0,0 +1,53 @@
+#ifndef MBGL_SHADER_SDF_SHADER
+#define MBGL_SHADER_SDF_SHADER
+
+#include <mbgl/shader/shader.hpp>
+#include <mbgl/shader/uniform.hpp>
+
+namespace mbgl {
+
+class SDFShader : public Shader {
+public:
+    SDFShader();
+
+    virtual void bind(char *offset) = 0;
+
+    UniformMatrix<4>              u_matrix      = {"u_matrix",      *this};
+    UniformMatrix<4>              u_exmatrix    = {"u_exmatrix",    *this};
+    Uniform<std::array<float, 4>> u_color       = {"u_color",       *this};
+    Uniform<std::array<float, 2>> u_texsize     = {"u_texsize",     *this};
+    Uniform<float>                u_buffer      = {"u_buffer",      *this};
+    Uniform<float>                u_gamma       = {"u_gamma",       *this};
+    Uniform<float>                u_angle       = {"u_angle",       *this};
+    Uniform<float>                u_zoom        = {"u_zoom",        *this};
+    Uniform<float>                u_flip        = {"u_flip",        *this};
+    Uniform<float>                u_fadedist    = {"u_fadedist",    *this};
+    Uniform<float>                u_minfadezoom = {"u_minfadezoom", *this};
+    Uniform<float>                u_maxfadezoom = {"u_maxfadezoom", *this};
+    Uniform<float>                u_fadezoom    = {"u_fadezoom",    *this};
+
+protected:
+    int32_t a_pos = -1;
+    int32_t a_offset = -1;
+    int32_t a_tex = -1;
+    int32_t a_angle = -1;
+    int32_t a_minzoom = -1;
+    int32_t a_maxzoom = -1;
+    int32_t a_rangeend = -1;
+    int32_t a_rangestart = -1;
+    int32_t a_labelminzoom = -1;
+};
+
+class SDFGlyphShader : public SDFShader {
+public:
+    void bind(char *offset);
+};
+
+class SDFIconShader : public SDFShader {
+public:
+    void bind(char *offset);
+};
+
+}
+
+#endif