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#pragma once
#include <cstdint>
#include <type_traits>
namespace mbgl {
namespace gl {
// Mapping based on https://www.opengl.org/wiki/OpenGL_Type
using ProgramID = uint32_t;
using ShaderID = uint32_t;
using BufferID = uint32_t;
using TextureID = uint32_t;
using VertexArrayID = uint32_t;
using FramebufferID = uint32_t;
using RenderbufferID = uint32_t;
using AttributeLocation = int32_t;
using UniformLocation = int32_t;
using TextureUnit = uint8_t;
enum class ShaderType : uint32_t {
Vertex = 0x8B31,
Fragment = 0x8B30
};
enum class DataType : uint32_t {
Byte = 0x1400,
UnsignedByte = 0x1401,
Short = 0x1402,
UnsignedShort = 0x1403,
Integer = 0x1404,
UnsignedInteger = 0x1405,
Float = 0x1406
};
template <typename T> struct DataTypeOf;
template <> struct DataTypeOf<int8_t> : std::integral_constant<DataType, DataType::Byte> {};
template <> struct DataTypeOf<uint8_t> : std::integral_constant<DataType, DataType::UnsignedByte> {};
template <> struct DataTypeOf<int16_t> : std::integral_constant<DataType, DataType::Short> {};
template <> struct DataTypeOf<uint16_t> : std::integral_constant<DataType, DataType::UnsignedShort> {};
template <> struct DataTypeOf<int32_t> : std::integral_constant<DataType, DataType::Integer> {};
template <> struct DataTypeOf<uint32_t> : std::integral_constant<DataType, DataType::UnsignedInteger> {};
template <> struct DataTypeOf<float> : std::integral_constant<DataType, DataType::Float> {};
enum class RenderbufferType : uint32_t {
RGBA = 0x8058,
DepthStencil = 0x88F0,
};
enum class TextureMipMap : bool { No = false, Yes = true };
enum class TextureFilter : bool { Nearest = false, Linear = true };
enum class TextureWrap : bool { Clamp, Repeat };
enum class TextureFormat : uint32_t {
RGBA = 0x1908,
Alpha = 0x1906,
#if not MBGL_USE_GLES2
Stencil = 0x1901,
Depth = 0x1902,
#endif // MBGL_USE_GLES2
};
enum class PrimitiveType {
Points = 0x0000,
Lines = 0x0001,
LineLoop = 0x0002,
LineStrip = 0x0003,
Triangles = 0x0004,
TriangleStrip = 0x0005,
TriangleFan = 0x0006
};
#if not MBGL_USE_GLES2
struct PixelStorageType {
int32_t alignment;
};
constexpr bool operator!=(const PixelStorageType& a, const PixelStorageType& b) {
return a.alignment != b.alignment;
}
#endif // MBGL_USE_GLES2
} // namespace gl
} // namespace mbgl
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