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#pragma once
#include <mbgl/gl/attribute.hpp>
#include <mbgl/gl/uniform.hpp>
#include <cstdint>
namespace mbgl {
namespace attributes {
/*
* Pack a pair of values, interpreted as uint8's, into a single float.
* Used to conserve vertex attributes. Values are unpacked in the vertex
* shader using the `unpack_float()` function, defined in _prelude.vertex.glsl.
*/
template <typename T>
inline uint16_t packUint8Pair(T a, T b) {
return static_cast<uint16_t>(a) * 256 + static_cast<uint16_t>(b);
}
// Layout attributes
MBGL_DEFINE_ATTRIBUTE(int16_t, 2, a_pos);
MBGL_DEFINE_ATTRIBUTE(int16_t, 2, a_extrude);
MBGL_DEFINE_ATTRIBUTE(int16_t, 4, a_pos_offset);
MBGL_DEFINE_ATTRIBUTE(uint16_t, 2, a_texture_pos);
template <typename T, std::size_t N>
struct a_data {
static auto name() { return "a_data"; }
using Type = gl::Attribute<T, N>;
};
struct a_size {
static auto name() { return "a_size"; }
using Type = gl::Attribute<uint16_t, 3>;
};
template <std::size_t N>
struct a_offset {
static auto name() { return "a_offset"; }
using Type = gl::Attribute<int16_t, N>;
};
// Paint attributes
struct a_color {
static auto name() { return "a_color"; }
using Type = gl::Attribute<float, 2>;
};
struct a_fill_color {
static auto name() { return "a_fill_color"; }
using Type = gl::Attribute<float, 2>;
};
struct a_halo_color {
static auto name() { return "a_halo_color"; }
using Type = gl::Attribute<float, 2>;
};
struct a_stroke_color {
static auto name() { return "a_stroke_color"; }
using Type = gl::Attribute<float, 2>;
};
struct a_outline_color {
static auto name() { return "a_outline_color"; }
using Type = gl::Attribute<float, 2>;
};
struct a_opacity {
static auto name() { return "a_opacity"; }
using Type = gl::Attribute<float, 1>;
};
struct a_stroke_opacity {
static auto name() { return "a_stroke_opacity"; }
using Type = gl::Attribute<float, 1>;
};
struct a_blur {
static auto name() { return "a_blur"; }
using Type = gl::Attribute<float, 1>;
};
struct a_radius {
static auto name() { return "a_radius"; }
using Type = gl::Attribute<float, 1>;
};
struct a_width {
static auto name() { return "a_width"; }
using Type = gl::Attribute<float, 1>;
};
struct a_height {
static auto name() { return "a_height"; }
using Type = gl::Attribute<float, 1>;
};
struct a_base {
static auto name() { return "a_base"; }
using Type = gl::Attribute<float, 1>;
};
struct a_gap_width {
static auto name() { return "a_gapwidth"; }
using Type = gl::Attribute<float, 1>;
};
struct a_stroke_width {
static auto name() { return "a_stroke_width"; }
using Type = gl::Attribute<float, 1>;
};
template <>
struct a_offset<1> {
static auto name() { return "a_offset"; }
using Type = gl::Attribute<float, 1>;
};
struct a_halo_width {
static auto name() { return "a_halo_width"; }
using Type = gl::Attribute<float, 1>;
};
struct a_halo_blur {
static auto name() { return "a_halo_blur"; }
using Type = gl::Attribute<float, 1>;
};
} // namespace attributes
} // namespace mbgl
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