/** * @author thespite / http://www.twitter.com/thespite */ import { MaxEquation, MinEquation, RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_10x10_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGB_ETC1_Format, RGBA_PVRTC_2BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGB_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGBA_S3TC_DXT5_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT1_Format, RGB_S3TC_DXT1_Format, SrcAlphaSaturateFactor, OneMinusDstColorFactor, DstColorFactor, OneMinusDstAlphaFactor, DstAlphaFactor, OneMinusSrcAlphaFactor, SrcAlphaFactor, OneMinusSrcColorFactor, SrcColorFactor, OneFactor, ZeroFactor, ReverseSubtractEquation, SubtractEquation, AddEquation, DepthFormat, DepthStencilFormat, LuminanceAlphaFormat, LuminanceFormat, RGBAFormat, RGBFormat, AlphaFormat, HalfFloatType, FloatType, UnsignedIntType, IntType, UnsignedShortType, ShortType, ByteType, UnsignedInt248Type, UnsignedShort565Type, UnsignedShort5551Type, UnsignedShort4444Type, UnsignedByteType, LinearMipMapLinearFilter, LinearMipMapNearestFilter, LinearFilter, NearestMipMapLinearFilter, NearestMipMapNearestFilter, NearestFilter, MirroredRepeatWrapping, ClampToEdgeWrapping, RepeatWrapping } from '../../constants.js'; function WebGLUtils( gl, extensions, capabilities ) { function convert( p ) { var extension; if ( p === RepeatWrapping ) return gl.REPEAT; if ( p === ClampToEdgeWrapping ) return gl.CLAMP_TO_EDGE; if ( p === MirroredRepeatWrapping ) return gl.MIRRORED_REPEAT; if ( p === NearestFilter ) return gl.NEAREST; if ( p === NearestMipMapNearestFilter ) return gl.NEAREST_MIPMAP_NEAREST; if ( p === NearestMipMapLinearFilter ) return gl.NEAREST_MIPMAP_LINEAR; if ( p === LinearFilter ) return gl.LINEAR; if ( p === LinearMipMapNearestFilter ) return gl.LINEAR_MIPMAP_NEAREST; if ( p === LinearMipMapLinearFilter ) return gl.LINEAR_MIPMAP_LINEAR; if ( p === UnsignedByteType ) return gl.UNSIGNED_BYTE; if ( p === UnsignedShort4444Type ) return gl.UNSIGNED_SHORT_4_4_4_4; if ( p === UnsignedShort5551Type ) return gl.UNSIGNED_SHORT_5_5_5_1; if ( p === UnsignedShort565Type ) return gl.UNSIGNED_SHORT_5_6_5; if ( p === ByteType ) return gl.BYTE; if ( p === ShortType ) return gl.SHORT; if ( p === UnsignedShortType ) return gl.UNSIGNED_SHORT; if ( p === IntType ) return gl.INT; if ( p === UnsignedIntType ) return gl.UNSIGNED_INT; if ( p === FloatType ) return gl.FLOAT; if ( p === HalfFloatType ) { if ( capabilities.isWebGL2 ) return gl.HALF_FLOAT; extension = extensions.get( 'OES_texture_half_float' ); if ( extension !== null ) return extension.HALF_FLOAT_OES; } if ( p === AlphaFormat ) return gl.ALPHA; if ( p === RGBFormat ) return gl.RGB; if ( p === RGBAFormat ) return gl.RGBA; if ( p === LuminanceFormat ) return gl.LUMINANCE; if ( p === LuminanceAlphaFormat ) return gl.LUMINANCE_ALPHA; if ( p === DepthFormat ) return gl.DEPTH_COMPONENT; if ( p === DepthStencilFormat ) return gl.DEPTH_STENCIL; if ( p === AddEquation ) return gl.FUNC_ADD; if ( p === SubtractEquation ) return gl.FUNC_SUBTRACT; if ( p === ReverseSubtractEquation ) return gl.FUNC_REVERSE_SUBTRACT; if ( p === ZeroFactor ) return gl.ZERO; if ( p === OneFactor ) return gl.ONE; if ( p === SrcColorFactor ) return gl.SRC_COLOR; if ( p === OneMinusSrcColorFactor ) return gl.ONE_MINUS_SRC_COLOR; if ( p === SrcAlphaFactor ) return gl.SRC_ALPHA; if ( p === OneMinusSrcAlphaFactor ) return gl.ONE_MINUS_SRC_ALPHA; if ( p === DstAlphaFactor ) return gl.DST_ALPHA; if ( p === OneMinusDstAlphaFactor ) return gl.ONE_MINUS_DST_ALPHA; if ( p === DstColorFactor ) return gl.DST_COLOR; if ( p === OneMinusDstColorFactor ) return gl.ONE_MINUS_DST_COLOR; if ( p === SrcAlphaSaturateFactor ) return gl.SRC_ALPHA_SATURATE; if ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) { extension = extensions.get( 'WEBGL_compressed_texture_s3tc' ); if ( extension !== null ) { if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT; if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT; if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT; if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT; } } if ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) { extension = extensions.get( 'WEBGL_compressed_texture_pvrtc' ); if ( extension !== null ) { if ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG; if ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG; if ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG; if ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG; } } if ( p === RGB_ETC1_Format ) { extension = extensions.get( 'WEBGL_compressed_texture_etc1' ); if ( extension !== null ) return extension.COMPRESSED_RGB_ETC1_WEBGL; } if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format || p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format || p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format || p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format || p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ) { extension = extensions.get( 'WEBGL_compressed_texture_astc' ); if ( extension !== null ) { return p; } } if ( p === MinEquation || p === MaxEquation ) { if ( capabilities.isWebGL2 ) { if ( p === MinEquation ) return gl.MIN; if ( p === MaxEquation ) return gl.MAX; } extension = extensions.get( 'EXT_blend_minmax' ); if ( extension !== null ) { if ( p === MinEquation ) return extension.MIN_EXT; if ( p === MaxEquation ) return extension.MAX_EXT; } } if ( p === UnsignedInt248Type ) { if ( capabilities.isWebGL2 ) return gl.UNSIGNED_INT_24_8; extension = extensions.get( 'WEBGL_depth_texture' ); if ( extension !== null ) return extension.UNSIGNED_INT_24_8_WEBGL; } return 0; } return { convert: convert }; } export { WebGLUtils };