| /* |
| * Copyright (C) 2011 University of Szeged |
| * Copyright (C) 2011 Zoltan Herczeg |
| * |
| * 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 UNIVERSITY OF SZEGED ``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 UNIVERSITY OF SZEGED 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 FELightingNEON_h |
| #define FELightingNEON_h |
| |
| #if CPU(ARM_NEON) && CPU(ARM_TRADITIONAL) && COMPILER(GCC_OR_CLANG) |
| |
| #include "FELighting.h" |
| #include "PointLightSource.h" |
| #include "SpotLightSource.h" |
| #include <wtf/ParallelJobs.h> |
| |
| namespace WebCore { |
| |
| // Otherwise: Distant Light. |
| #define FLAG_POINT_LIGHT 0x01 |
| #define FLAG_SPOT_LIGHT 0x02 |
| #define FLAG_CONE_EXPONENT_IS_1 0x04 |
| |
| // Otherwise: Diffuse light. |
| #define FLAG_SPECULAR_LIGHT 0x10 |
| #define FLAG_DIFFUSE_CONST_IS_1 0x20 |
| #define FLAG_SPECULAR_EXPONENT_IS_1 0x40 |
| |
| // Must be aligned to 16 bytes. |
| struct FELightingFloatArgumentsForNeon { |
| float surfaceScale; |
| float minusSurfaceScaleDividedByFour; |
| float diffuseConstant; |
| float padding1; |
| |
| float coneCutOffLimit; |
| float coneFullLight; |
| float coneCutOffRange; |
| float constOne; |
| |
| float lightX; |
| float lightY; |
| float lightZ; |
| float padding2; |
| |
| float directionX; |
| float directionY; |
| float directionZ; |
| float padding3; |
| |
| float colorRed; |
| float colorGreen; |
| float colorBlue; |
| float padding4; |
| }; |
| |
| struct FELightingPaintingDataForNeon { |
| unsigned char* pixels; |
| float yStart; |
| int widthDecreasedByTwo; |
| int absoluteHeight; |
| // Combination of FLAG constants above. |
| int flags; |
| int specularExponent; |
| int coneExponent; |
| FELightingFloatArgumentsForNeon* floatArguments; |
| short* paintingConstants; |
| }; |
| |
| short* feLightingConstantsForNeon(); |
| |
| extern "C" { |
| void neonDrawLighting(FELightingPaintingDataForNeon*); |
| } |
| |
| inline void FELighting::platformApplyNeon(const LightingData& data, const LightSource::PaintingData& paintingData) |
| { |
| alignas(16) FELightingFloatArgumentsForNeon floatArguments; |
| FELightingPaintingDataForNeon neonData = { |
| data.pixels->data(), |
| 1, |
| data.widthDecreasedByOne - 1, |
| data.heightDecreasedByOne - 1, |
| 0, |
| 0, |
| 0, |
| &floatArguments, |
| feLightingConstantsForNeon() |
| }; |
| |
| // Set light source arguments. |
| floatArguments.constOne = 1; |
| |
| floatArguments.colorRed = m_lightingColor.red(); |
| floatArguments.colorGreen = m_lightingColor.green(); |
| floatArguments.colorBlue = m_lightingColor.blue(); |
| floatArguments.padding4 = 0; |
| |
| if (m_lightSource->type() == LS_POINT) { |
| neonData.flags |= FLAG_POINT_LIGHT; |
| PointLightSource& pointLightSource = static_cast<PointLightSource&>(m_lightSource.get()); |
| floatArguments.lightX = pointLightSource.position().x(); |
| floatArguments.lightY = pointLightSource.position().y(); |
| floatArguments.lightZ = pointLightSource.position().z(); |
| floatArguments.padding2 = 0; |
| } else if (m_lightSource->type() == LS_SPOT) { |
| neonData.flags |= FLAG_SPOT_LIGHT; |
| SpotLightSource& spotLightSource = static_cast<SpotLightSource&>(m_lightSource.get()); |
| floatArguments.lightX = spotLightSource.position().x(); |
| floatArguments.lightY = spotLightSource.position().y(); |
| floatArguments.lightZ = spotLightSource.position().z(); |
| floatArguments.padding2 = 0; |
| |
| floatArguments.directionX = paintingData.directionVector.x(); |
| floatArguments.directionY = paintingData.directionVector.y(); |
| floatArguments.directionZ = paintingData.directionVector.z(); |
| floatArguments.padding3 = 0; |
| |
| floatArguments.coneCutOffLimit = paintingData.coneCutOffLimit; |
| floatArguments.coneFullLight = paintingData.coneFullLight; |
| floatArguments.coneCutOffRange = paintingData.coneCutOffLimit - paintingData.coneFullLight; |
| neonData.coneExponent = getPowerCoefficients(spotLightSource.specularExponent()); |
| if (spotLightSource.specularExponent() == 1) |
| neonData.flags |= FLAG_CONE_EXPONENT_IS_1; |
| } else { |
| ASSERT(m_lightSource->type() == LS_DISTANT); |
| floatArguments.lightX = paintingData.lightVector.x(); |
| floatArguments.lightY = paintingData.lightVector.y(); |
| floatArguments.lightZ = paintingData.lightVector.z(); |
| floatArguments.padding2 = 1; |
| } |
| |
| // Set lighting arguments. |
| floatArguments.surfaceScale = data.surfaceScale; |
| floatArguments.minusSurfaceScaleDividedByFour = -data.surfaceScale / 4; |
| if (m_lightingType == FELighting::DiffuseLighting) |
| floatArguments.diffuseConstant = m_diffuseConstant; |
| else { |
| neonData.flags |= FLAG_SPECULAR_LIGHT; |
| floatArguments.diffuseConstant = m_specularConstant; |
| neonData.specularExponent = getPowerCoefficients(m_specularExponent); |
| if (m_specularExponent == 1) |
| neonData.flags |= FLAG_SPECULAR_EXPONENT_IS_1; |
| } |
| if (floatArguments.diffuseConstant == 1) |
| neonData.flags |= FLAG_DIFFUSE_CONST_IS_1; |
| |
| int optimalThreadNumber = ((data.widthDecreasedByOne - 1) * (data.heightDecreasedByOne - 1)) / s_minimalRectDimension; |
| if (optimalThreadNumber > 1) { |
| // Initialize parallel jobs |
| ParallelJobs<FELightingPaintingDataForNeon> parallelJobs(&WebCore::FELighting::platformApplyNeonWorker, optimalThreadNumber); |
| |
| // Fill the parameter array |
| int job = parallelJobs.numberOfJobs(); |
| if (job > 1) { |
| int yStart = 1; |
| int yStep = (data.heightDecreasedByOne - 1) / job; |
| for (--job; job >= 0; --job) { |
| FELightingPaintingDataForNeon& params = parallelJobs.parameter(job); |
| params = neonData; |
| params.yStart = yStart; |
| params.pixels += (yStart - 1) * (data.widthDecreasedByOne + 1) * 4; |
| if (job > 0) { |
| params.absoluteHeight = yStep; |
| yStart += yStep; |
| } else |
| params.absoluteHeight = data.heightDecreasedByOne - yStart; |
| } |
| parallelJobs.execute(); |
| return; |
| } |
| } |
| |
| neonDrawLighting(&neonData); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // CPU(ARM_NEON) && COMPILER(GCC_OR_CLANG) |
| |
| #endif // FELightingNEON_h |