RE_Extension.h

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#ifndef __RE_Extension_h__
#define __RE_Extension_h__

enum RE_Extension
{
    RE_EXT_INVALID = -1,

    // Types
    RE_EXT_ABGR = 0,
    RE_EXT_HALF_FLOAT,
    RE_EXT_PACKED_PIXELS,
    RE_EXT_HALF_FLOAT_VERTEX,
    RE_EXT_DEPTH_BUFFER_FLOAT,
    RE_EXT_DEPTH_BUFFER_NO_CLAMP,

    // Operations
    RE_EXT_BLEND_COLOR,
    RE_EXT_BLEND_LOGIC_OP,
    RE_EXT_BLEND_MINMAX,
    RE_EXT_BLEND_SUBTRACT,
    RE_EXT_BLEND_SEPARATE,

    // Texture
    RE_EXT_SGIS_TEXTURE_BORDER_CLAMP,
    RE_EXT_SGIS_TEXTURE_EDGE_CLAMP,
    RE_EXT_MULTI_TEXTURE,
    RE_EXT_TEXTURE,
    RE_EXT_TEXTURE_3D,
    RE_EXT_TEXTURE_CUBE_MAP,
    RE_EXT_TEXTURE_CUBE_MAP_SEAMLESS,
    RE_EXT_TEXTURE_CUBE_MAP_ARRAY,
    RE_EXT_TEXTURE_EDGE_CLAMP,
    RE_EXT_TEXTURE_BORDER_CLAMP,
    RE_EXT_TEXTURE_NON_POWER_TWO,
    RE_EXT_TEXTURE_RECTANGLE,
    RE_EXT_TEXTURE_FLOAT,
    RE_EXT_TEXTURE_ARRAY,
    RE_EXT_TEXTURE_COMPRESSION,
    RE_EXT_TEXTURE_INTEGER,
    RE_EXT_TEXTURE_ANISOTROPIC_FILTER,
    RE_EXT_TEXTURE_MULTISAMPLE,
    RE_EXT_TEXTURE_2CHAN,
    RE_EXT_TEXTURE_BUFFER,
    RE_EXT_TEXTURE_BUFFER_RGB32,
    RE_EXT_TEXTURE_BUFFER_RANGE,
    RE_EXT_TEXTURE_SWIZZLE,
    RE_EXT_TEXTURE_BINDLESS,
    RE_EXT_TEXTURE_BINDLESS_FREE_INDEXING,
    RE_EXT_TEXTURE_COPY,
    RE_EXT_SHADOWS,
    RE_EXT_TEXTURE_BARRIER,
    RE_EXT_INTERNALFORMAT_QUERY,

    // GLSL
    RE_EXT_SHADERS,
    RE_EXT_SHADER_VER4,
    RE_EXT_GEOMETRY_SHADER,
    RE_EXT_TESS_SHADER,
    RE_EXT_UNIFORM_BUFFER,
    RE_EXT_SHADER_VER5,
    RE_EXT_SHADER_FP64,
    RE_EXT_SHADER_ATTRIB64,
    RE_EXT_TRANSFORM_FEEDBACK,
    RE_EXT_TRANSFORM_FEEDBACK_STREAM,
    RE_EXT_EXPLICIT_ATTRIBUTE_LOCATION,
    RE_EXT_SAMPLE_SHADING,
    RE_EXT_SHADER_BIT_ENCODING,
    RE_EXT_SEPARATE_SHADERS,
    RE_EXT_PROGRAM_INTERFACE_QUERY,
    RE_EXT_IMAGE_LOAD_STORE,
    RE_EXT_COMPUTE_SHADER,
    RE_EXT_SHADING_LANGUAGE_PACKING,
    RE_EXT_SHADER_ATOMIC_COUNTERS,

    // Geometry related
    RE_EXT_VERTEX_BUFFER_OBJECT,
    RE_EXT_VERTEX_ARRAY_OBJECT,
    RE_EXT_MAP_BUFFER_RANGE,
    RE_EXT_BUFFER_STORAGE,
    RE_EXT_PRIMITIVE_RESTART,
    RE_EXT_DRAW_INSTANCED,
    RE_EXT_DRAW_INDIRECT,
    RE_EXT_INSTANCED_ARRAYS,
    RE_EXT_ELEMENTS_BASE_VERTEX,
    RE_EXT_BASE_INSTANCE,
    RE_EXT_POINT_SPRITE,
    RE_EXT_SHADER_STORAGE_BUFFER,
    RE_EXT_CLEAR_BUFFER,

    // Frame buffer related
    RE_EXT_MULTISAMPLE,
    RE_EXT_DRAW_BUFFERS,
    RE_EXT_FRAME_BUFFER_OBJECT,
    RE_EXT_FRAME_BUFFER_BLIT,
    RE_EXT_FRAME_BUFFER_MULTISAMPLE,
    RE_EXT_PIXEL_BUFFER_OBJECT,
    RE_EXT_OCCLUSION_QUERY,
    RE_EXT_OCCLUSION_QUERY_BOOLEAN,
    RE_EXT_DEPTH_CLAMP,
    RE_EXT_MULTI_BIND,

    // GL control related
    RE_EXT_SYNC,
    RE_EXT_CONDITIONAL_RENDER,

    RE_EXT_DIRECT_STATE_ACCESS,
    RE_EXT_COMPATIBILITY,
    
    RE_EXT_EXTERNAL_OBJECTS,

    // OpenGL Queries
    RE_EXT_MEMORY_QUERY,
    RE_EXT_TIMER_QUERY,
    RE_EXT_GPU_MEMORY,
    RE_EXT_DEBUG_OUTPUT,
    RE_EXT_DEBUG_OUTPUT2,

    // System (GLX, WGL)
    RE_EXT_WGL_EXTENSIONS_STRING,
    RE_EXT_SWAP_INTERVAL,
    RE_EXT_ROBUSTNESS,
    
    RE_EXT_NUM_EXTENSIONS       // sentinel, always last
};

#endif // __RE_Extension_h__