mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 22:55:23 +00:00
1345 lines
45 KiB
C++
1345 lines
45 KiB
C++
/*
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* Copyright (C) 2010 Apple Inc. All rights reserved.
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* Copyright (C) 2010 Google Inc. All rights reserved.
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* Copyright (C) 2010 Mozilla Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef WEBGLTEXELCONVERSIONS_H_
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#define WEBGLTEXELCONVERSIONS_H_
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#ifdef __SUNPRO_CC
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#define __restrict
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#endif
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#include "WebGLTypes.h"
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#include <stdint.h>
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#include "mozilla/Attributes.h"
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#include "mozilla/Casting.h"
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namespace mozilla {
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bool ConvertImage(size_t width, size_t height,
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const void* srcBegin, size_t srcStride, gl::OriginPos srcOrigin,
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WebGLTexelFormat srcFormat, bool srcPremultiplied,
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void* dstBegin, size_t dstStride, gl::OriginPos dstOrigin,
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WebGLTexelFormat dstFormat, bool dstPremultiplied);
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//////////////////////////////////////////////////////////////////////////////////////////
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// single precision float
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// seeeeeeeemmmmmmmmmmmmmmmmmmmmmmm
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// half precision float
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// seeeeemmmmmmmmmm
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// IEEE 16bits floating point:
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const uint16_t kFloat16Value_Zero = 0x0000; // = 0000000000000000b
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const uint16_t kFloat16Value_One = 0x3C00; // = 0011110000000000b
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const uint16_t kFloat16Value_Infinity = 0x7C00; // = 0111110000000000b
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const uint16_t kFloat16Value_NaN = 0x7FFF; // = 011111yyyyyyyyyyb (nonzero y)
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MOZ_ALWAYS_INLINE uint16_t
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packToFloat16(float v)
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{
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union {
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float f32Value;
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uint32_t f32Bits;
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};
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f32Value = v;
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// pull the sign from v into f16bits
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uint16_t f16Bits = uint16_t(f32Bits >> 16) & 0x8000;
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const uint32_t mantissa = f32Bits & 0x7FFFFF;
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const uint32_t exp = (f32Bits >> 23) & 0xFF;
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// Adapted from: OpenGL ES 2.0 Programming Guide Appx.
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// Converting Float to Half-Float
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// 143 = 255 - 127 + 15
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// = sp_max - sp_bias + hp_bias
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if (exp >= 143) {
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if (mantissa && exp == 0xFF) {
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// Single precision was NaN
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return f16Bits | kFloat16Value_NaN;
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} else {
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// Outside range, store as infinity
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return f16Bits | kFloat16Value_Infinity;
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}
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}
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// too small, try to make a denormalized number
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// 112 = 255 - 127 - (15 + 1)
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// = sp_max - sp_bias - (hp_bias + 1)
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if (exp <= 112) {
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return f16Bits | uint16_t(mantissa >> (14 + 112 - exp));
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}
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f16Bits |= uint16_t(exp - 112) << 10;
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f16Bits |= uint16_t(mantissa >> 13) & 0x03FF;
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return f16Bits;
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}
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MOZ_ALWAYS_INLINE float
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unpackFromFloat16(uint16_t v)
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{
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union {
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float f32Value;
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uint32_t f32Bits;
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};
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// grab sign bit
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f32Bits = uint32_t(v & 0x8000) << 16;
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uint16_t exp = (v >> 10) & 0x001F;
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uint16_t mantissa = v & 0x03FF;
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if (!exp) {
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// Handle denormalized numbers
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// Adapted from: OpenGL ES 2.0 Programming Guide Appx.
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// Converting Float to Half-Float
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if (mantissa) {
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exp = 112; // See packToFloat16
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mantissa <<= 1;
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// For every leading zero, decrement the exponent
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// and shift the mantissa to the left
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while ((mantissa & (1 << 10)) == 0) {
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mantissa <<= 1;
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--exp;
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}
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mantissa &= 0x03FF;
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f32Bits |= (exp << 23) | (mantissa << 13);
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// Denormalized number
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return f32Value;
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}
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// +/- zero
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return f32Value;
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}
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if (exp == 0x001F) {
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if (v & 0x03FF) {
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// this is a NaN
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f32Bits |= 0x7FFFFFFF;
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} else {
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// this is -inf or +inf
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f32Bits |= 0x7F800000;
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}
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return f32Value;
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}
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f32Bits |= uint32_t(exp + (-15 + 127)) << 23;
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f32Bits |= uint32_t(v & 0x03FF) << 13;
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return f32Value;
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}
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// These routines come from angle/common/mathutil.h
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// They are copied here to remove the dependency on ANGLE headers
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// included from mathutil.h
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MOZ_ALWAYS_INLINE uint16_t
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packToFloat11(float fp32)
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{
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const unsigned int float32MantissaMask = 0x7FFFFF;
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const unsigned int float32ExponentMask = 0x7F800000;
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const unsigned int float32SignMask = 0x80000000;
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const unsigned int float32ValueMask = ~float32SignMask;
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const unsigned int float32ExponentFirstBit = 23;
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const unsigned int float32ExponentBias = 127;
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const unsigned short float11Max = 0x7BF;
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const unsigned short float11MantissaMask = 0x3F;
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const unsigned short float11ExponentMask = 0x7C0;
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const unsigned short float11BitMask = 0x7FF;
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const unsigned int float11ExponentBias = 14;
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const unsigned int float32Maxfloat11 = 0x477E0000;
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const unsigned int float32Minfloat11 = 0x38800000;
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const unsigned int float32Bits = BitwiseCast<unsigned int>(fp32);
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const bool float32Sign = (float32Bits & float32SignMask) == float32SignMask;
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unsigned int float32Val = float32Bits & float32ValueMask;
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if ((float32Val & float32ExponentMask) == float32ExponentMask)
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{
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// INF or NAN
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if ((float32Val & float32MantissaMask) != 0)
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{
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return float11ExponentMask | (((float32Val >> 17) | (float32Val >> 11) | (float32Val >> 6) | (float32Val)) & float11MantissaMask);
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}
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else if (float32Sign)
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{
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// -INF is clamped to 0 since float11 is positive only
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return 0;
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}
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else
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{
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return float11ExponentMask;
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}
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}
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else if (float32Sign)
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{
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// float11 is positive only, so clamp to zero
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return 0;
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}
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else if (float32Val > float32Maxfloat11)
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{
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// The number is too large to be represented as a float11, set to max
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return float11Max;
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}
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else
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{
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if (float32Val < float32Minfloat11)
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{
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// The number is too small to be represented as a normalized float11
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// Convert it to a denormalized value.
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const unsigned int shift = (float32ExponentBias - float11ExponentBias) - (float32Val >> float32ExponentFirstBit);
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float32Val = ((1 << float32ExponentFirstBit) | (float32Val & float32MantissaMask)) >> shift;
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}
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else
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{
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// Rebias the exponent to represent the value as a normalized float11
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float32Val += 0xC8000000;
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}
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return ((float32Val + 0xFFFF + ((float32Val >> 17) & 1)) >> 17) & float11BitMask;
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}
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}
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MOZ_ALWAYS_INLINE uint16_t
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packToFloat10(float fp32)
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{
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const unsigned int float32MantissaMask = 0x7FFFFF;
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const unsigned int float32ExponentMask = 0x7F800000;
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const unsigned int float32SignMask = 0x80000000;
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const unsigned int float32ValueMask = ~float32SignMask;
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const unsigned int float32ExponentFirstBit = 23;
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const unsigned int float32ExponentBias = 127;
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const unsigned short float10Max = 0x3DF;
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const unsigned short float10MantissaMask = 0x1F;
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const unsigned short float10ExponentMask = 0x3E0;
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const unsigned short float10BitMask = 0x3FF;
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const unsigned int float10ExponentBias = 14;
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const unsigned int float32Maxfloat10 = 0x477C0000;
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const unsigned int float32Minfloat10 = 0x38800000;
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const unsigned int float32Bits = BitwiseCast<unsigned int>(fp32);
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const bool float32Sign = (float32Bits & float32SignMask) == float32SignMask;
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unsigned int float32Val = float32Bits & float32ValueMask;
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if ((float32Val & float32ExponentMask) == float32ExponentMask)
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{
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// INF or NAN
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if ((float32Val & float32MantissaMask) != 0)
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{
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return float10ExponentMask | (((float32Val >> 18) | (float32Val >> 13) | (float32Val >> 3) | (float32Val)) & float10MantissaMask);
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}
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else if (float32Sign)
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{
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// -INF is clamped to 0 since float11 is positive only
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return 0;
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}
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else
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{
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return float10ExponentMask;
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}
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}
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else if (float32Sign)
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{
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// float10 is positive only, so clamp to zero
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return 0;
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}
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else if (float32Val > float32Maxfloat10)
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{
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// The number is too large to be represented as a float11, set to max
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return float10Max;
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}
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else
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{
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if (float32Val < float32Minfloat10)
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{
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// The number is too small to be represented as a normalized float11
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// Convert it to a denormalized value.
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const unsigned int shift = (float32ExponentBias - float10ExponentBias) - (float32Val >> float32ExponentFirstBit);
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float32Val = ((1 << float32ExponentFirstBit) | (float32Val & float32MantissaMask)) >> shift;
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}
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else
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{
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// Rebias the exponent to represent the value as a normalized float11
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float32Val += 0xC8000000;
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}
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return ((float32Val + 0x1FFFF + ((float32Val >> 18) & 1)) >> 18) & float10BitMask;
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}
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}
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enum class WebGLTexelPremultiplicationOp : int {
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None,
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Premultiply,
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Unpremultiply
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};
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namespace WebGLTexelConversions {
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template<WebGLTexelFormat Format>
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struct IsFloatFormat
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{
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static const bool Value =
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Format == WebGLTexelFormat::A32F ||
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Format == WebGLTexelFormat::R32F ||
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Format == WebGLTexelFormat::RA32F ||
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Format == WebGLTexelFormat::RG32F ||
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Format == WebGLTexelFormat::RGB11F11F10F ||
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Format == WebGLTexelFormat::RGB32F ||
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Format == WebGLTexelFormat::RGBA32F;
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};
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template<WebGLTexelFormat Format>
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struct IsHalfFloatFormat
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{
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static const bool Value =
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Format == WebGLTexelFormat::A16F ||
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Format == WebGLTexelFormat::R16F ||
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Format == WebGLTexelFormat::RA16F ||
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Format == WebGLTexelFormat::RG16F ||
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Format == WebGLTexelFormat::RGB16F ||
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Format == WebGLTexelFormat::RGBA16F;
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};
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template<WebGLTexelFormat Format>
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struct Is16bppFormat
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{
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static const bool Value =
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Format == WebGLTexelFormat::RGB565 ||
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Format == WebGLTexelFormat::RGBA4444 ||
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Format == WebGLTexelFormat::RGBA5551;
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};
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template<WebGLTexelFormat Format,
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bool IsFloat = IsFloatFormat<Format>::Value,
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bool Is16bpp = Is16bppFormat<Format>::Value,
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bool IsHalfFloat = IsHalfFloatFormat<Format>::Value>
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struct DataTypeForFormat
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{
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typedef uint8_t Type;
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};
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template<WebGLTexelFormat Format>
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struct DataTypeForFormat<Format, true, false, false>
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{
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typedef float Type;
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};
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template<WebGLTexelFormat Format>
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struct DataTypeForFormat<Format, false, true, false>
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{
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typedef uint16_t Type;
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};
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template<WebGLTexelFormat Format>
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struct DataTypeForFormat<Format, false, false, true>
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{
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typedef uint16_t Type;
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};
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template<>
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struct DataTypeForFormat<WebGLTexelFormat::RGB11F11F10F, true, false, false>
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{
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typedef uint32_t Type;
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};
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template<WebGLTexelFormat Format>
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struct IntermediateFormat
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{
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static const WebGLTexelFormat Value
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= IsFloatFormat<Format>::Value
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? WebGLTexelFormat::RGBA32F
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: IsHalfFloatFormat<Format>::Value ? WebGLTexelFormat::RGBA16F
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: WebGLTexelFormat::RGBA8;
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};
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inline size_t TexelBytesForFormat(WebGLTexelFormat format) {
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switch (format) {
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case WebGLTexelFormat::A8:
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case WebGLTexelFormat::R8:
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return 1;
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case WebGLTexelFormat::A16F:
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case WebGLTexelFormat::R16F:
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case WebGLTexelFormat::RA8:
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case WebGLTexelFormat::RG8:
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case WebGLTexelFormat::RGB565:
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case WebGLTexelFormat::RGBA4444:
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case WebGLTexelFormat::RGBA5551:
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return 2;
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case WebGLTexelFormat::RGB8:
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return 3;
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case WebGLTexelFormat::A32F:
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case WebGLTexelFormat::R32F:
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case WebGLTexelFormat::RA16F:
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case WebGLTexelFormat::RG16F:
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case WebGLTexelFormat::RGB11F11F10F:
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case WebGLTexelFormat::RGBA8:
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case WebGLTexelFormat::BGRX8:
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case WebGLTexelFormat::BGRA8:
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return 4;
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case WebGLTexelFormat::RGB16F:
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return 6;
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case WebGLTexelFormat::RA32F:
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case WebGLTexelFormat::RG32F:
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case WebGLTexelFormat::RGBA16F:
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return 8;
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case WebGLTexelFormat::RGB32F:
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return 12;
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case WebGLTexelFormat::RGBA32F:
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return 16;
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default:
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MOZ_ASSERT(false, "Unknown texel format. Coding mistake?");
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return 0;
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}
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}
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MOZ_ALWAYS_INLINE bool HasAlpha(WebGLTexelFormat format) {
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return (format == WebGLTexelFormat::A8 ||
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format == WebGLTexelFormat::A16F ||
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format == WebGLTexelFormat::A32F ||
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format == WebGLTexelFormat::RA8 ||
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format == WebGLTexelFormat::RA16F ||
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format == WebGLTexelFormat::RA32F ||
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format == WebGLTexelFormat::RGBA4444 ||
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format == WebGLTexelFormat::RGBA5551 ||
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format == WebGLTexelFormat::RGBA8 ||
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format == WebGLTexelFormat::RGBA16F ||
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format == WebGLTexelFormat::RGBA32F ||
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format == WebGLTexelFormat::BGRA8);
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}
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MOZ_ALWAYS_INLINE bool HasColor(WebGLTexelFormat format) {
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return (format == WebGLTexelFormat::R8 ||
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format == WebGLTexelFormat::R16F ||
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format == WebGLTexelFormat::R32F ||
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format == WebGLTexelFormat::RA8 ||
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format == WebGLTexelFormat::RA16F ||
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format == WebGLTexelFormat::RA32F ||
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format == WebGLTexelFormat::RG8 ||
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format == WebGLTexelFormat::RG16F ||
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format == WebGLTexelFormat::RG32F ||
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format == WebGLTexelFormat::RGB565 ||
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format == WebGLTexelFormat::RGB8 ||
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format == WebGLTexelFormat::RGB11F11F10F ||
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format == WebGLTexelFormat::RGB16F ||
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format == WebGLTexelFormat::RGB32F ||
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format == WebGLTexelFormat::RGBA4444 ||
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format == WebGLTexelFormat::RGBA5551 ||
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format == WebGLTexelFormat::RGBA8 ||
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format == WebGLTexelFormat::RGBA16F ||
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format == WebGLTexelFormat::RGBA32F ||
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format == WebGLTexelFormat::BGRX8 ||
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format == WebGLTexelFormat::BGRA8);
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}
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/****** BEGIN CODE SHARED WITH WEBKIT ******/
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|
|
|
// the pack/unpack functions here are originally from this file:
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|
// http://trac.webkit.org/browser/trunk/WebCore/platform/graphics/GraphicsContext3D.cpp
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|
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//----------------------------------------------------------------------
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|
// Pixel unpacking routines.
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|
|
template<WebGLTexelFormat Format, typename SrcType, typename DstType>
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|
MOZ_ALWAYS_INLINE void
|
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unpack(const SrcType* __restrict src,
|
|
DstType* __restrict dst)
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|
{
|
|
MOZ_ASSERT(false, "Unimplemented texture format conversion");
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|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
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|
// 1-channel formats
|
|
template<> MOZ_ALWAYS_INLINE void
|
|
unpack<WebGLTexelFormat::A8, uint8_t, uint8_t>(const uint8_t* __restrict src, uint8_t* __restrict dst)
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|
{
|
|
dst[0] = 0;
|
|
dst[1] = 0;
|
|
dst[2] = 0;
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|
dst[3] = src[0];
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|
}
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|
|
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("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];
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|
dst[3] = src[3];
|
|
}
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|
|
|
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
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|
|
|
} // end namespace mozilla
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#endif // WEBGLTEXELCONVERSIONS_H_
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