/* * Copyright (C) 2010 Apple Inc. All rights reserved. * Copyright (C) 2010 Google Inc. All rights reserved. * Copyright (C) 2010 Mozilla Corporation. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef WEBGLTEXELCONVERSIONS_H_ #define WEBGLTEXELCONVERSIONS_H_ #ifdef __SUNPRO_CC #define __restrict #endif #include "WebGLTypes.h" #include <stdint.h> #include "mozilla/Attributes.h" #include "mozilla/Casting.h" namespace mozilla { bool ConvertImage(size_t width, size_t height, const void* srcBegin, size_t srcStride, gl::OriginPos srcOrigin, WebGLTexelFormat srcFormat, bool srcPremultiplied, void* dstBegin, size_t dstStride, gl::OriginPos dstOrigin, WebGLTexelFormat dstFormat, bool dstPremultiplied, bool* out_wasTrivial); ////////////////////////////////////////////////////////////////////////////////////////// // single precision float // seeeeeeeemmmmmmmmmmmmmmmmmmmmmmm // half precision float // seeeeemmmmmmmmmm // IEEE 16bits floating point: const uint16_t kFloat16Value_Zero = 0x0000; // = 0000000000000000b const uint16_t kFloat16Value_One = 0x3C00; // = 0011110000000000b const uint16_t kFloat16Value_Infinity = 0x7C00; // = 0111110000000000b const uint16_t kFloat16Value_NaN = 0x7FFF; // = 011111yyyyyyyyyyb (nonzero y) MOZ_ALWAYS_INLINE uint16_t packToFloat16(float v) { union { float f32Value; uint32_t f32Bits; }; f32Value = v; // pull the sign from v into f16bits uint16_t f16Bits = uint16_t(f32Bits >> 16) & 0x8000; const uint32_t mantissa = f32Bits & 0x7FFFFF; const uint32_t exp = (f32Bits >> 23) & 0xFF; // Adapted from: OpenGL ES 2.0 Programming Guide Appx. // Converting Float to Half-Float // 143 = 255 - 127 + 15 // = sp_max - sp_bias + hp_bias if (exp >= 143) { if (mantissa && exp == 0xFF) { // Single precision was NaN return f16Bits | kFloat16Value_NaN; } else { // Outside range, store as infinity return f16Bits | kFloat16Value_Infinity; } } // too small, try to make a denormalized number // 112 = 255 - 127 - (15 + 1) // = sp_max - sp_bias - (hp_bias + 1) if (exp <= 112) { return f16Bits | uint16_t(mantissa >> (14 + 112 - exp)); } f16Bits |= uint16_t(exp - 112) << 10; f16Bits |= uint16_t(mantissa >> 13) & 0x03FF; return f16Bits; } MOZ_ALWAYS_INLINE float unpackFromFloat16(uint16_t v) { union { float f32Value; uint32_t f32Bits; }; // grab sign bit f32Bits = uint32_t(v & 0x8000) << 16; uint16_t exp = (v >> 10) & 0x001F; uint16_t mantissa = v & 0x03FF; if (!exp) { // Handle denormalized numbers // Adapted from: OpenGL ES 2.0 Programming Guide Appx. // Converting Float to Half-Float if (mantissa) { exp = 112; // See packToFloat16 mantissa <<= 1; // For every leading zero, decrement the exponent // and shift the mantissa to the left while ((mantissa & (1 << 10)) == 0) { mantissa <<= 1; --exp; } mantissa &= 0x03FF; f32Bits |= (exp << 23) | (mantissa << 13); // Denormalized number return f32Value; } // +/- zero return f32Value; } if (exp == 0x001F) { if (v & 0x03FF) { // this is a NaN f32Bits |= 0x7FFFFFFF; } else { // this is -inf or +inf f32Bits |= 0x7F800000; } return f32Value; } f32Bits |= uint32_t(exp + (-15 + 127)) << 23; f32Bits |= uint32_t(v & 0x03FF) << 13; return f32Value; } // These routines come from angle/common/mathutil.h // They are copied here to remove the dependency on ANGLE headers // included from mathutil.h MOZ_ALWAYS_INLINE uint16_t packToFloat11(float fp32) { const unsigned int float32MantissaMask = 0x7FFFFF; const unsigned int float32ExponentMask = 0x7F800000; const unsigned int float32SignMask = 0x80000000; const unsigned int float32ValueMask = ~float32SignMask; const unsigned int float32ExponentFirstBit = 23; const unsigned int float32ExponentBias = 127; const unsigned short float11Max = 0x7BF; const unsigned short float11MantissaMask = 0x3F; const unsigned short float11ExponentMask = 0x7C0; const unsigned short float11BitMask = 0x7FF; const unsigned int float11ExponentBias = 14; const unsigned int float32Maxfloat11 = 0x477E0000; const unsigned int float32Minfloat11 = 0x38800000; const unsigned int float32Bits = BitwiseCast<unsigned int>(fp32); const bool float32Sign = (float32Bits & float32SignMask) == float32SignMask; unsigned int float32Val = float32Bits & float32ValueMask; if ((float32Val & float32ExponentMask) == float32ExponentMask) { // INF or NAN if ((float32Val & float32MantissaMask) != 0) { return float11ExponentMask | (((float32Val >> 17) | (float32Val >> 11) | (float32Val >> 6) | (float32Val)) & float11MantissaMask); } else if (float32Sign) { // -INF is clamped to 0 since float11 is positive only return 0; } else { return float11ExponentMask; } } else if (float32Sign) { // float11 is positive only, so clamp to zero return 0; } else if (float32Val > float32Maxfloat11) { // The number is too large to be represented as a float11, set to max return float11Max; } else { if (float32Val < float32Minfloat11) { // The number is too small to be represented as a normalized float11 // Convert it to a denormalized value. const unsigned int shift = (float32ExponentBias - float11ExponentBias) - (float32Val >> float32ExponentFirstBit); float32Val = ((1 << float32ExponentFirstBit) | (float32Val & float32MantissaMask)) >> shift; } else { // Rebias the exponent to represent the value as a normalized float11 float32Val += 0xC8000000; } return ((float32Val + 0xFFFF + ((float32Val >> 17) & 1)) >> 17) & float11BitMask; } } MOZ_ALWAYS_INLINE uint16_t packToFloat10(float fp32) { const unsigned int float32MantissaMask = 0x7FFFFF; const unsigned int float32ExponentMask = 0x7F800000; const unsigned int float32SignMask = 0x80000000; const unsigned int float32ValueMask = ~float32SignMask; const unsigned int float32ExponentFirstBit = 23; const unsigned int float32ExponentBias = 127; const unsigned short float10Max = 0x3DF; const unsigned short float10MantissaMask = 0x1F; const unsigned short float10ExponentMask = 0x3E0; const unsigned short float10BitMask = 0x3FF; const unsigned int float10ExponentBias = 14; const unsigned int float32Maxfloat10 = 0x477C0000; const unsigned int float32Minfloat10 = 0x38800000; const unsigned int float32Bits = BitwiseCast<unsigned int>(fp32); const bool float32Sign = (float32Bits & float32SignMask) == float32SignMask; unsigned int float32Val = float32Bits & float32ValueMask; if ((float32Val & float32ExponentMask) == float32ExponentMask) { // INF or NAN if ((float32Val & float32MantissaMask) != 0) { return float10ExponentMask | (((float32Val >> 18) | (float32Val >> 13) | (float32Val >> 3) | (float32Val)) & float10MantissaMask); } else if (float32Sign) { // -INF is clamped to 0 since float11 is positive only return 0; } else { return float10ExponentMask; } } else if (float32Sign) { // float10 is positive only, so clamp to zero return 0; } else if (float32Val > float32Maxfloat10) { // The number is too large to be represented as a float11, set to max return float10Max; } else { if (float32Val < float32Minfloat10) { // The number is too small to be represented as a normalized float11 // Convert it to a denormalized value. const unsigned int shift = (float32ExponentBias - float10ExponentBias) - (float32Val >> float32ExponentFirstBit); float32Val = ((1 << float32ExponentFirstBit) | (float32Val & float32MantissaMask)) >> shift; } else { // Rebias the exponent to represent the value as a normalized float11 float32Val += 0xC8000000; } return ((float32Val + 0x1FFFF + ((float32Val >> 18) & 1)) >> 18) & float10BitMask; } } enum class WebGLTexelPremultiplicationOp : int { None, Premultiply, Unpremultiply }; namespace WebGLTexelConversions { template<WebGLTexelFormat Format> struct IsFloatFormat { static const bool Value = Format == WebGLTexelFormat::A32F || Format == WebGLTexelFormat::R32F || Format == WebGLTexelFormat::RA32F || Format == WebGLTexelFormat::RG32F || Format == WebGLTexelFormat::RGB11F11F10F || Format == WebGLTexelFormat::RGB32F || Format == WebGLTexelFormat::RGBA32F; }; template<WebGLTexelFormat Format> struct IsHalfFloatFormat { static const bool Value = Format == WebGLTexelFormat::A16F || Format == WebGLTexelFormat::R16F || Format == WebGLTexelFormat::RA16F || Format == WebGLTexelFormat::RG16F || Format == WebGLTexelFormat::RGB16F || Format == WebGLTexelFormat::RGBA16F; }; template<WebGLTexelFormat Format> struct Is16bppFormat { static const bool Value = Format == WebGLTexelFormat::RGB565 || Format == WebGLTexelFormat::RGBA4444 || Format == WebGLTexelFormat::RGBA5551; }; template<WebGLTexelFormat Format, bool IsFloat = IsFloatFormat<Format>::Value, bool Is16bpp = Is16bppFormat<Format>::Value, bool IsHalfFloat = IsHalfFloatFormat<Format>::Value> struct DataTypeForFormat { typedef uint8_t Type; }; template<WebGLTexelFormat Format> struct DataTypeForFormat<Format, true, false, false> { typedef float Type; }; template<WebGLTexelFormat Format> struct DataTypeForFormat<Format, false, true, false> { typedef uint16_t Type; }; template<WebGLTexelFormat Format> struct DataTypeForFormat<Format, false, false, true> { typedef uint16_t Type; }; template<> struct DataTypeForFormat<WebGLTexelFormat::RGB11F11F10F, true, false, false> { typedef uint32_t Type; }; template<WebGLTexelFormat Format> struct IntermediateFormat { static const WebGLTexelFormat Value = IsFloatFormat<Format>::Value ? WebGLTexelFormat::RGBA32F : IsHalfFloatFormat<Format>::Value ? WebGLTexelFormat::RGBA16F : WebGLTexelFormat::RGBA8; }; inline size_t TexelBytesForFormat(WebGLTexelFormat format) { switch (format) { case WebGLTexelFormat::A8: case WebGLTexelFormat::R8: return 1; case WebGLTexelFormat::A16F: case WebGLTexelFormat::R16F: case WebGLTexelFormat::RA8: case WebGLTexelFormat::RG8: case WebGLTexelFormat::RGB565: case WebGLTexelFormat::RGBA4444: case WebGLTexelFormat::RGBA5551: return 2; case WebGLTexelFormat::RGB8: return 3; case WebGLTexelFormat::A32F: case WebGLTexelFormat::R32F: case WebGLTexelFormat::RA16F: case WebGLTexelFormat::RG16F: case WebGLTexelFormat::RGB11F11F10F: case WebGLTexelFormat::RGBA8: case WebGLTexelFormat::BGRX8: case WebGLTexelFormat::BGRA8: return 4; case WebGLTexelFormat::RGB16F: return 6; case WebGLTexelFormat::RA32F: case WebGLTexelFormat::RG32F: case WebGLTexelFormat::RGBA16F: return 8; case WebGLTexelFormat::RGB32F: return 12; case WebGLTexelFormat::RGBA32F: return 16; default: MOZ_ASSERT(false, "Unknown texel format. Coding mistake?"); return 0; } } MOZ_ALWAYS_INLINE bool HasAlpha(WebGLTexelFormat format) { return (format == WebGLTexelFormat::A8 || format == WebGLTexelFormat::A16F || format == WebGLTexelFormat::A32F || format == WebGLTexelFormat::RA8 || format == WebGLTexelFormat::RA16F || format == WebGLTexelFormat::RA32F || format == WebGLTexelFormat::RGBA4444 || format == WebGLTexelFormat::RGBA5551 || format == WebGLTexelFormat::RGBA8 || format == WebGLTexelFormat::RGBA16F || format == WebGLTexelFormat::RGBA32F || format == WebGLTexelFormat::BGRA8); } MOZ_ALWAYS_INLINE bool HasColor(WebGLTexelFormat format) { return (format == WebGLTexelFormat::R8 || format == WebGLTexelFormat::R16F || format == WebGLTexelFormat::R32F || format == WebGLTexelFormat::RA8 || format == WebGLTexelFormat::RA16F || format == WebGLTexelFormat::RA32F || format == WebGLTexelFormat::RG8 || format == WebGLTexelFormat::RG16F || format == WebGLTexelFormat::RG32F || format == WebGLTexelFormat::RGB565 || format == WebGLTexelFormat::RGB8 || format == WebGLTexelFormat::RGB11F11F10F || format == WebGLTexelFormat::RGB16F || format == WebGLTexelFormat::RGB32F || format == WebGLTexelFormat::RGBA4444 || format == WebGLTexelFormat::RGBA5551 || format == WebGLTexelFormat::RGBA8 || format == WebGLTexelFormat::RGBA16F || format == WebGLTexelFormat::RGBA32F || format == WebGLTexelFormat::BGRX8 || format == WebGLTexelFormat::BGRA8); } /****** BEGIN CODE SHARED WITH WEBKIT ******/ // the pack/unpack functions here are originally from this file: // http://trac.webkit.org/browser/trunk/WebCore/platform/graphics/GraphicsContext3D.cpp //---------------------------------------------------------------------- // Pixel unpacking routines. template<WebGLTexelFormat Format, typename SrcType, typename DstType> MOZ_ALWAYS_INLINE void unpack(const SrcType* __restrict src, DstType* __restrict dst) { MOZ_ASSERT(false, "Unimplemented texture format conversion"); } //////////////////////////////////////////////////////////////////////////////// // 1-channel formats template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::A8, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = 0; dst[1] = 0; dst[2] = 0; dst[3] = src[0]; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::A16F, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = kFloat16Value_Zero; dst[1] = kFloat16Value_Zero; dst[2] = kFloat16Value_Zero; dst[3] = src[0]; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::A32F, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = 0; dst[1] = 0; dst[2] = 0; dst[3] = src[0]; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::R8, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[0]; dst[2] = src[0]; dst[3] = 0xFF; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::R16F, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[0]; dst[2] = src[0]; dst[3] = kFloat16Value_One; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::R32F, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[0]; dst[2] = src[0]; dst[3] = 1.0f; } //////////////////////////////////////////////////////////////////////////////// // 2-channel formats template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RA8, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[0]; dst[2] = src[0]; dst[3] = src[1]; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RA16F, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[0]; dst[2] = src[0]; dst[3] = src[1]; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RA32F, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[0]; dst[2] = src[0]; dst[3] = src[1]; } //////////////////////////////////////////////////////////////////////////////// // 3-channel formats template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGB565, uint16_t, uint8_t>(const uint16_t* __restrict src, uint8_t* __restrict dst) { uint16_t packedValue = src[0]; uint8_t r = (packedValue >> 11) & 0x1F; uint8_t g = (packedValue >> 5) & 0x3F; uint8_t b = packedValue & 0x1F; dst[0] = (r << 3) | (r & 0x7); dst[1] = (g << 2) | (g & 0x3); dst[2] = (b << 3) | (b & 0x7); dst[3] = 0xFF; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGB8, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = 0xFF; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGB16F, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = kFloat16Value_One; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGB32F, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = 1.0f; } //////////////////////////////////////////////////////////////////////////////// // 4-channel formats template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGBA4444, uint16_t, uint8_t>(const uint16_t* __restrict src, uint8_t* __restrict dst) { uint16_t packedValue = src[0]; uint8_t r = (packedValue >> 12) & 0x0F; uint8_t g = (packedValue >> 8) & 0x0F; uint8_t b = (packedValue >> 4) & 0x0F; uint8_t a = packedValue & 0x0F; dst[0] = (r << 4) | r; dst[1] = (g << 4) | g; dst[2] = (b << 4) | b; dst[3] = (a << 4) | a; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGBA5551, uint16_t, uint8_t>(const uint16_t* __restrict src, uint8_t* __restrict dst) { uint16_t packedValue = src[0]; uint8_t r = (packedValue >> 11) & 0x1F; uint8_t g = (packedValue >> 6) & 0x1F; uint8_t b = (packedValue >> 1) & 0x1F; dst[0] = (r << 3) | (r & 0x7); dst[1] = (g << 3) | (g & 0x7); dst[2] = (b << 3) | (b & 0x7); dst[3] = (packedValue & 0x1) ? 0xFF : 0; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGBA8, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGBA16F, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::RGBA32F, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } //////////////////////////////////////////////////////////////////////////////// // DOM element formats template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::BGRX8, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[2]; dst[1] = src[1]; dst[2] = src[0]; dst[3] = 0xFF; } template<> MOZ_ALWAYS_INLINE void unpack<WebGLTexelFormat::BGRA8, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[2]; dst[1] = src[1]; dst[2] = src[0]; dst[3] = src[3]; } //---------------------------------------------------------------------- // Pixel packing routines. // template<WebGLTexelFormat Format, WebGLTexelPremultiplicationOp PremultiplicationOp, typename SrcType, typename DstType> MOZ_ALWAYS_INLINE void pack(const SrcType* __restrict src, DstType* __restrict dst) { MOZ_CRASH("GFX: Unimplemented texture format conversion"); } //////////////////////////////////////////////////////////////////////////////// // 1-channel formats template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A8, WebGLTexelPremultiplicationOp::None, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A8, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A8, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A16F, WebGLTexelPremultiplicationOp::None, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A16F, WebGLTexelPremultiplicationOp::Premultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A16F, WebGLTexelPremultiplicationOp::Unpremultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A32F, WebGLTexelPremultiplicationOp::None, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A32F, WebGLTexelPremultiplicationOp::Premultiply, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::A32F, WebGLTexelPremultiplicationOp::Unpremultiply, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R8, WebGLTexelPremultiplicationOp::None, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R8, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] / 255.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); dst[0] = srcR; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R8, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); dst[0] = srcR; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R16F, WebGLTexelPremultiplicationOp::None, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R16F, WebGLTexelPremultiplicationOp::Premultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = unpackFromFloat16(src[3]); dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R16F, WebGLTexelPremultiplicationOp::Unpremultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float unpackedAlpha = unpackFromFloat16(src[3]); float scaleFactor = unpackedAlpha ? 1.0f / unpackedAlpha : 1.0f; dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R32F, WebGLTexelPremultiplicationOp::None, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R32F, WebGLTexelPremultiplicationOp::Premultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3]; dst[0] = src[0] * scaleFactor; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::R32F, WebGLTexelPremultiplicationOp::Unpremultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3] ? 1.0f / src[3] : 1.0f; dst[0] = src[0] * scaleFactor; } //////////////////////////////////////////////////////////////////////////////// // 2-channel formats template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA8, WebGLTexelPremultiplicationOp::None, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA8, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] / 255.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); dst[0] = srcR; dst[1] = src[3]; } // FIXME: this routine is lossy and must be removed. template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA8, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); dst[0] = srcR; dst[1] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA16F, WebGLTexelPremultiplicationOp::None, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA16F, WebGLTexelPremultiplicationOp::Premultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = unpackFromFloat16(src[3]); dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); dst[1] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA16F, WebGLTexelPremultiplicationOp::Unpremultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float unpackedAlpha = unpackFromFloat16(src[3]); float scaleFactor = unpackedAlpha ? 1.0f / unpackedAlpha : 1.0f; dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); dst[1] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA32F, WebGLTexelPremultiplicationOp::None, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA32F, WebGLTexelPremultiplicationOp::Premultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3]; dst[0] = src[0] * scaleFactor; dst[1] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RA32F, WebGLTexelPremultiplicationOp::Unpremultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3] ? 1.0f / src[3] : 1.0f; dst[0] = src[0] * scaleFactor; dst[1] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG8, WebGLTexelPremultiplicationOp::None, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG8, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] / 255.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); dst[0] = srcR; dst[1] = srcG; } // FIXME: this routine is lossy and must be removed. template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG8, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); dst[0] = srcR; dst[1] = srcG; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG16F, WebGLTexelPremultiplicationOp::None, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG16F, WebGLTexelPremultiplicationOp::Premultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = unpackFromFloat16(src[3]); dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); dst[1] = packToFloat16(unpackFromFloat16(src[1]) * scaleFactor); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG16F, WebGLTexelPremultiplicationOp::Unpremultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float unpackedAlpha = unpackFromFloat16(src[3]); float scaleFactor = unpackedAlpha ? 1.0f / unpackedAlpha : 1.0f; dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); dst[1] = packToFloat16(unpackFromFloat16(src[1]) * scaleFactor); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG32F, WebGLTexelPremultiplicationOp::None, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG32F, WebGLTexelPremultiplicationOp::Premultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3]; dst[0] = src[0] * scaleFactor; dst[1] = src[1] * scaleFactor; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RG32F, WebGLTexelPremultiplicationOp::Unpremultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3] ? 1.0f / src[3] : 1.0f; dst[0] = src[0] * scaleFactor; dst[1] = src[1] * scaleFactor; } //////////////////////////////////////////////////////////////////////////////// // 3-channel formats template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB565, WebGLTexelPremultiplicationOp::None, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { *dst = ( ((src[0] & 0xF8) << 8) | ((src[1] & 0xFC) << 3) | ((src[2] & 0xF8) >> 3)); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB565, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = src[3] / 255.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); *dst = ( ((srcR & 0xF8) << 8) | ((srcG & 0xFC) << 3) | ((srcB & 0xF8) >> 3)); } // FIXME: this routine is lossy and must be removed. template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB565, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); *dst = ( ((srcR & 0xF8) << 8) | ((srcG & 0xFC) << 3) | ((srcB & 0xF8) >> 3)); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB8, WebGLTexelPremultiplicationOp::None, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB8, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] / 255.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); dst[0] = srcR; dst[1] = srcG; dst[2] = srcB; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB8, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); dst[0] = srcR; dst[1] = srcG; dst[2] = srcB; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB11F11F10F, WebGLTexelPremultiplicationOp::None, float, uint32_t>(const float* __restrict src, uint32_t* __restrict dst) { dst[0] = ((packToFloat11(src[0]) << 0) | (packToFloat11(src[1]) << 11) | (packToFloat10(src[2]) << 22)); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB11F11F10F, WebGLTexelPremultiplicationOp::Premultiply, float, uint32_t>(const float* __restrict src, uint32_t* __restrict dst) { float scaleFactor = src[3]; dst[0] = ((packToFloat11(src[0] * scaleFactor) << 0) | (packToFloat11(src[1] * scaleFactor) << 11) | (packToFloat10(src[2] * scaleFactor) << 22)); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB11F11F10F, WebGLTexelPremultiplicationOp::Unpremultiply, float, uint32_t>(const float* __restrict src, uint32_t* __restrict dst) { float scaleFactor = src[3] ? 1.0f / src[3] : 1.0f; dst[0] = ((packToFloat11(src[0] * scaleFactor) << 0) | (packToFloat11(src[1] * scaleFactor) << 11) | (packToFloat10(src[2] * scaleFactor) << 22)); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB16F, WebGLTexelPremultiplicationOp::None, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB16F, WebGLTexelPremultiplicationOp::Premultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = unpackFromFloat16(src[3]); dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); dst[1] = packToFloat16(unpackFromFloat16(src[1]) * scaleFactor); dst[2] = packToFloat16(unpackFromFloat16(src[2]) * scaleFactor); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB16F, WebGLTexelPremultiplicationOp::Unpremultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float unpackedAlpha = unpackFromFloat16(src[3]); float scaleFactor = unpackedAlpha ? 1.0f / unpackedAlpha : 1.0f; dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); dst[1] = packToFloat16(unpackFromFloat16(src[1]) * scaleFactor); dst[2] = packToFloat16(unpackFromFloat16(src[2]) * scaleFactor); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB32F, WebGLTexelPremultiplicationOp::None, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB32F, WebGLTexelPremultiplicationOp::Premultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3]; dst[0] = src[0] * scaleFactor; dst[1] = src[1] * scaleFactor; dst[2] = src[2] * scaleFactor; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGB32F, WebGLTexelPremultiplicationOp::Unpremultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3] ? 1.0f / src[3] : 1.0f; dst[0] = src[0] * scaleFactor; dst[1] = src[1] * scaleFactor; dst[2] = src[2] * scaleFactor; } //////////////////////////////////////////////////////////////////////////////// // 4-channel formats template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA4444, WebGLTexelPremultiplicationOp::None, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { *dst = ( ((src[0] & 0xF0) << 8) | ((src[1] & 0xF0) << 4) | (src[2] & 0xF0) | (src[3] >> 4) ); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA4444, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = src[3] / 255.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); *dst = ( ((srcR & 0xF0) << 8) | ((srcG & 0xF0) << 4) | (srcB & 0xF0) | (src[3] >> 4)); } // FIXME: this routine is lossy and must be removed. template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA4444, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); *dst = ( ((srcR & 0xF0) << 8) | ((srcG & 0xF0) << 4) | (srcB & 0xF0) | (src[3] >> 4)); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA5551, WebGLTexelPremultiplicationOp::None, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { *dst = ( ((src[0] & 0xF8) << 8) | ((src[1] & 0xF8) << 3) | ((src[2] & 0xF8) >> 2) | (src[3] >> 7)); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA5551, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = src[3] / 255.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); *dst = ( ((srcR & 0xF8) << 8) | ((srcG & 0xF8) << 3) | ((srcB & 0xF8) >> 2) | (src[3] >> 7)); } // FIXME: this routine is lossy and must be removed. template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA5551, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); *dst = ( ((srcR & 0xF8) << 8) | ((srcG & 0xF8) << 3) | ((srcB & 0xF8) >> 2) | (src[3] >> 7)); } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA8, WebGLTexelPremultiplicationOp::None, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA8, WebGLTexelPremultiplicationOp::Premultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] / 255.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); dst[0] = srcR; dst[1] = srcG; dst[2] = srcB; dst[3] = src[3]; } // FIXME: this routine is lossy and must be removed. template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA8, WebGLTexelPremultiplicationOp::Unpremultiply, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { float scaleFactor = src[3] ? 255.0f / src[3] : 1.0f; uint8_t srcR = static_cast<uint8_t>(src[0] * scaleFactor); uint8_t srcG = static_cast<uint8_t>(src[1] * scaleFactor); uint8_t srcB = static_cast<uint8_t>(src[2] * scaleFactor); dst[0] = srcR; dst[1] = srcG; dst[2] = srcB; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA16F, WebGLTexelPremultiplicationOp::None, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA16F, WebGLTexelPremultiplicationOp::Premultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float scaleFactor = unpackFromFloat16(src[3]); dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); dst[1] = packToFloat16(unpackFromFloat16(src[1]) * scaleFactor); dst[2] = packToFloat16(unpackFromFloat16(src[2]) * scaleFactor); dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA16F, WebGLTexelPremultiplicationOp::Unpremultiply, uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { float unpackedAlpha = unpackFromFloat16(src[3]); float scaleFactor = unpackedAlpha ? 1.0f / unpackedAlpha : 1.0f; dst[0] = packToFloat16(unpackFromFloat16(src[0]) * scaleFactor); dst[1] = packToFloat16(unpackFromFloat16(src[1]) * scaleFactor); dst[2] = packToFloat16(unpackFromFloat16(src[2]) * scaleFactor); dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA32F, WebGLTexelPremultiplicationOp::None, float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA32F, WebGLTexelPremultiplicationOp::Premultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3]; dst[0] = src[0] * scaleFactor; dst[1] = src[1] * scaleFactor; dst[2] = src[2] * scaleFactor; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void pack<WebGLTexelFormat::RGBA32F, WebGLTexelPremultiplicationOp::Unpremultiply, float, float>(const float* __restrict src, float* __restrict dst) { float scaleFactor = src[3] ? 1.0f / src[3] : 1.0f; dst[0] = src[0] * scaleFactor; dst[1] = src[1] * scaleFactor; dst[2] = src[2] * scaleFactor; dst[3] = src[3]; } /****** END CODE SHARED WITH WEBKIT ******/ template<typename SrcType, typename DstType> MOZ_ALWAYS_INLINE void convertType(const SrcType* __restrict src, DstType* __restrict dst) { MOZ_ASSERT(false, "Unimplemented texture format conversion"); } template<> MOZ_ALWAYS_INLINE void convertType<uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void convertType<uint16_t, uint16_t>(const uint16_t* __restrict src, uint16_t* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void convertType<float, float>(const float* __restrict src, float* __restrict dst) { dst[0] = src[0]; dst[1] = src[1]; dst[2] = src[2]; dst[3] = src[3]; } template<> MOZ_ALWAYS_INLINE void convertType<uint8_t, float>(const uint8_t* __restrict src, float* __restrict dst) { const float scaleFactor = 1.f / 255.0f; dst[0] = src[0] * scaleFactor; dst[1] = src[1] * scaleFactor; dst[2] = src[2] * scaleFactor; dst[3] = src[3] * scaleFactor; } template<> MOZ_ALWAYS_INLINE void convertType<uint8_t, uint16_t>(const uint8_t* __restrict src, uint16_t* __restrict dst) { const float scaleFactor = 1.f / 255.0f; dst[0] = packToFloat16(src[0] * scaleFactor); dst[1] = packToFloat16(src[1] * scaleFactor); dst[2] = packToFloat16(src[2] * scaleFactor); dst[3] = packToFloat16(src[3] * scaleFactor); } } // end namespace WebGLTexelConversions } // end namespace mozilla #endif // WEBGLTEXELCONVERSIONS_H_