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#ifndef MBGL_GEOMETRY_TRIANGLE_ELEMENTS_BUFFER
#define MBGL_GEOMETRY_TRIANGLE_ELEMENTS_BUFFER
#include <mbgl/geometry/buffer.hpp>
#include <mbgl/geometry/vao.hpp>
namespace mbgl {
struct ElementGroup {
VertexArrayObject array;
uint32_t vertex_length;
uint32_t elements_length;
ElementGroup() : vertex_length(0), elements_length(0) {}
ElementGroup(uint32_t vertex_length, uint32_t elements_length)
: vertex_length(vertex_length),
elements_length(elements_length) {
}
};
class TriangleElementsBuffer : public Buffer<
6, // bytes per triangle (3 * unsigned short == 6 bytes)
GL_ELEMENT_ARRAY_BUFFER
> {
public:
typedef uint16_t element_type;
void add(element_type a, element_type b, element_type c);
};
class LineElementsBuffer : public Buffer<
4, // bytes per triangle (2 * unsigned short == 6 bytes)
GL_ELEMENT_ARRAY_BUFFER
> {
public:
typedef uint16_t element_type;
void add(element_type a, element_type b);
};
class PointElementsBuffer : public Buffer<
2, // bytes per point (1 unsigned short)
GL_ELEMENT_ARRAY_BUFFER
> {
public:
typedef uint16_t element_type;
void add(element_type a);
};
}
#endif
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