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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "Sampler.hpp"
#include "Context.hpp"
#include "Surface.hpp"
#include "Shader/PixelRoutine.hpp"
#include "Common/Debug.hpp"
#include <memory.h>
#include <string.h>
namespace sw
{
FilterType Sampler::maximumTextureFilterQuality = FILTER_LINEAR;
MipmapType Sampler::maximumMipmapFilterQuality = MIPMAP_POINT;
Sampler::State::State()
{
memset(this, 0, sizeof(State));
}
Sampler::Sampler()
{
// FIXME: Mipmap::init
static const unsigned int zero = 0x00FF00FF;
for(int level = 0; level < MIPMAP_LEVELS; level++)
{
Mipmap &mipmap = texture.mipmap[level];
memset(&mipmap, 0, sizeof(Mipmap));
for(int face = 0; face < 6; face++)
{
mipmap.buffer[face] = &zero;
}
}
externalTextureFormat = FORMAT_NULL;
internalTextureFormat = FORMAT_NULL;
textureType = TEXTURE_NULL;
textureFilter = FILTER_LINEAR;
addressingModeU = ADDRESSING_WRAP;
addressingModeV = ADDRESSING_WRAP;
addressingModeW = ADDRESSING_WRAP;
mipmapFilterState = MIPMAP_NONE;
sRGB = false;
gather = false;
highPrecisionFiltering = false;
border = 0;
swizzleR = SWIZZLE_RED;
swizzleG = SWIZZLE_GREEN;
swizzleB = SWIZZLE_BLUE;
swizzleA = SWIZZLE_ALPHA;
compare = COMPARE_BYPASS;
texture.LOD = 0.0f;
exp2LOD = 1.0f;
texture.baseLevel = 0;
texture.maxLevel = 1000;
texture.maxLod = MAX_TEXTURE_LOD;
texture.minLod = 0;
}
Sampler::~Sampler()
{
}
Sampler::State Sampler::samplerState() const
{
State state;
if(textureType != TEXTURE_NULL)
{
state.textureType = textureType;
state.textureFormat = internalTextureFormat;
state.textureFilter = getTextureFilter();
state.addressingModeU = getAddressingModeU();
state.addressingModeV = getAddressingModeV();
state.addressingModeW = getAddressingModeW();
state.mipmapFilter = mipmapFilter();
state.sRGB = (sRGB && Surface::isSRGBreadable(externalTextureFormat)) || Surface::isSRGBformat(internalTextureFormat);
state.swizzleR = swizzleR;
state.swizzleG = swizzleG;
state.swizzleB = swizzleB;
state.swizzleA = swizzleA;
state.highPrecisionFiltering = highPrecisionFiltering;
state.compare = getCompareFunc();
#if PERF_PROFILE
state.compressedFormat = Surface::isCompressed(externalTextureFormat);
#endif
}
return state;
}
void Sampler::setTextureLevel(int face, int level, Surface *surface, TextureType type)
{
if(surface)
{
Mipmap &mipmap = texture.mipmap[level];
border = surface->getBorder();
mipmap.buffer[face] = surface->lockInternal(-border, -border, 0, LOCK_UNLOCKED, PRIVATE);
if(face == 0)
{
externalTextureFormat = surface->getExternalFormat();
internalTextureFormat = surface->getInternalFormat();
int width = surface->getWidth();
int height = surface->getHeight();
int depth = surface->getDepth();
int pitchP = surface->getInternalPitchP();
int sliceP = surface->getInternalSliceP();
if(level == 0)
{
texture.widthHeightLOD[0] = width * exp2LOD;
texture.widthHeightLOD[1] = width * exp2LOD;
texture.widthHeightLOD[2] = height * exp2LOD;
texture.widthHeightLOD[3] = height * exp2LOD;
texture.widthLOD[0] = width * exp2LOD;
texture.widthLOD[1] = width * exp2LOD;
texture.widthLOD[2] = width * exp2LOD;
texture.widthLOD[3] = width * exp2LOD;
texture.heightLOD[0] = height * exp2LOD;
texture.heightLOD[1] = height * exp2LOD;
texture.heightLOD[2] = height * exp2LOD;
texture.heightLOD[3] = height * exp2LOD;
texture.depthLOD[0] = depth * exp2LOD;
texture.depthLOD[1] = depth * exp2LOD;
texture.depthLOD[2] = depth * exp2LOD;
texture.depthLOD[3] = depth * exp2LOD;
}
if(Surface::isFloatFormat(internalTextureFormat))
{
mipmap.fWidth[0] = (float)width / 65536.0f;
mipmap.fWidth[1] = (float)width / 65536.0f;
mipmap.fWidth[2] = (float)width / 65536.0f;
mipmap.fWidth[3] = (float)width / 65536.0f;
mipmap.fHeight[0] = (float)height / 65536.0f;
mipmap.fHeight[1] = (float)height / 65536.0f;
mipmap.fHeight[2] = (float)height / 65536.0f;
mipmap.fHeight[3] = (float)height / 65536.0f;
mipmap.fDepth[0] = (float)depth / 65536.0f;
mipmap.fDepth[1] = (float)depth / 65536.0f;
mipmap.fDepth[2] = (float)depth / 65536.0f;
mipmap.fDepth[3] = (float)depth / 65536.0f;
}
short halfTexelU = 0x8000 / width;
short halfTexelV = 0x8000 / height;
short halfTexelW = 0x8000 / depth;
mipmap.uHalf[0] = halfTexelU;
mipmap.uHalf[1] = halfTexelU;
mipmap.uHalf[2] = halfTexelU;
mipmap.uHalf[3] = halfTexelU;
mipmap.vHalf[0] = halfTexelV;
mipmap.vHalf[1] = halfTexelV;
mipmap.vHalf[2] = halfTexelV;
mipmap.vHalf[3] = halfTexelV;
mipmap.wHalf[0] = halfTexelW;
mipmap.wHalf[1] = halfTexelW;
mipmap.wHalf[2] = halfTexelW;
mipmap.wHalf[3] = halfTexelW;
mipmap.width[0] = width;
mipmap.width[1] = width;
mipmap.width[2] = width;
mipmap.width[3] = width;
mipmap.height[0] = height;
mipmap.height[1] = height;
mipmap.height[2] = height;
mipmap.height[3] = height;
mipmap.depth[0] = depth;
mipmap.depth[1] = depth;
mipmap.depth[2] = depth;
mipmap.depth[3] = depth;
mipmap.onePitchP[0] = 1;
mipmap.onePitchP[1] = pitchP;
mipmap.onePitchP[2] = 1;
mipmap.onePitchP[3] = pitchP;
mipmap.pitchP[0] = pitchP;
mipmap.pitchP[1] = pitchP;
mipmap.pitchP[2] = pitchP;
mipmap.pitchP[3] = pitchP;
mipmap.sliceP[0] = sliceP;
mipmap.sliceP[1] = sliceP;
mipmap.sliceP[2] = sliceP;
mipmap.sliceP[3] = sliceP;
if(internalTextureFormat == FORMAT_YV12_BT601 ||
internalTextureFormat == FORMAT_YV12_BT709 ||
internalTextureFormat == FORMAT_YV12_JFIF)
{
unsigned int YStride = pitchP;
unsigned int YSize = YStride * height;
unsigned int CStride = align<16>(YStride / 2);
unsigned int CSize = CStride * height / 2;
mipmap.buffer[1] = (byte*)mipmap.buffer[0] + YSize;
mipmap.buffer[2] = (byte*)mipmap.buffer[1] + CSize;
texture.mipmap[1].width[0] = width / 2;
texture.mipmap[1].width[1] = width / 2;
texture.mipmap[1].width[2] = width / 2;
texture.mipmap[1].width[3] = width / 2;
texture.mipmap[1].height[0] = height / 2;
texture.mipmap[1].height[1] = height / 2;
texture.mipmap[1].height[2] = height / 2;
texture.mipmap[1].height[3] = height / 2;
texture.mipmap[1].onePitchP[0] = 1;
texture.mipmap[1].onePitchP[1] = CStride;
texture.mipmap[1].onePitchP[2] = 1;
texture.mipmap[1].onePitchP[3] = CStride;
}
}
}
textureType = type;
}
void Sampler::setTextureFilter(FilterType textureFilter)
{
this->textureFilter = (FilterType)min(textureFilter, maximumTextureFilterQuality);
}
void Sampler::setMipmapFilter(MipmapType mipmapFilter)
{
mipmapFilterState = (MipmapType)min(mipmapFilter, maximumMipmapFilterQuality);
}
void Sampler::setGatherEnable(bool enable)
{
gather = enable;
}
void Sampler::setAddressingModeU(AddressingMode addressingMode)
{
addressingModeU = addressingMode;
}
void Sampler::setAddressingModeV(AddressingMode addressingMode)
{
addressingModeV = addressingMode;
}
void Sampler::setAddressingModeW(AddressingMode addressingMode)
{
addressingModeW = addressingMode;
}
void Sampler::setReadSRGB(bool sRGB)
{
this->sRGB = sRGB;
}
void Sampler::setBorderColor(const Color<float> &borderColor)
{
// FIXME: Compact into generic function // FIXME: Clamp
short r = iround(0xFFFF * borderColor.r);
short g = iround(0xFFFF * borderColor.g);
short b = iround(0xFFFF * borderColor.b);
short a = iround(0xFFFF * borderColor.a);
texture.borderColor4[0][0] = texture.borderColor4[0][1] = texture.borderColor4[0][2] = texture.borderColor4[0][3] = r;
texture.borderColor4[1][0] = texture.borderColor4[1][1] = texture.borderColor4[1][2] = texture.borderColor4[1][3] = g;
texture.borderColor4[2][0] = texture.borderColor4[2][1] = texture.borderColor4[2][2] = texture.borderColor4[2][3] = b;
texture.borderColor4[3][0] = texture.borderColor4[3][1] = texture.borderColor4[3][2] = texture.borderColor4[3][3] = a;
texture.borderColorF[0][0] = texture.borderColorF[0][1] = texture.borderColorF[0][2] = texture.borderColorF[0][3] = borderColor.r;
texture.borderColorF[1][0] = texture.borderColorF[1][1] = texture.borderColorF[1][2] = texture.borderColorF[1][3] = borderColor.g;
texture.borderColorF[2][0] = texture.borderColorF[2][1] = texture.borderColorF[2][2] = texture.borderColorF[2][3] = borderColor.b;
texture.borderColorF[3][0] = texture.borderColorF[3][1] = texture.borderColorF[3][2] = texture.borderColorF[3][3] = borderColor.a;
}
void Sampler::setMaxAnisotropy(float maxAnisotropy)
{
texture.maxAnisotropy = maxAnisotropy;
}
void Sampler::setHighPrecisionFiltering(bool highPrecisionFiltering)
{
this->highPrecisionFiltering = highPrecisionFiltering;
}
void Sampler::setSwizzleR(SwizzleType swizzleR)
{
this->swizzleR = swizzleR;
}
void Sampler::setSwizzleG(SwizzleType swizzleG)
{
this->swizzleG = swizzleG;
}
void Sampler::setSwizzleB(SwizzleType swizzleB)
{
this->swizzleB = swizzleB;
}
void Sampler::setSwizzleA(SwizzleType swizzleA)
{
this->swizzleA = swizzleA;
}
void Sampler::setCompareFunc(CompareFunc compare)
{
this->compare = compare;
}
void Sampler::setBaseLevel(int baseLevel)
{
texture.baseLevel = baseLevel;
}
void Sampler::setMaxLevel(int maxLevel)
{
texture.maxLevel = maxLevel;
}
void Sampler::setMinLod(float minLod)
{
texture.minLod = clamp(minLod, 0.0f, (float)(MAX_TEXTURE_LOD));
}
void Sampler::setMaxLod(float maxLod)
{
texture.maxLod = clamp(maxLod, 0.0f, (float)(MAX_TEXTURE_LOD));
}
void Sampler::setFilterQuality(FilterType maximumFilterQuality)
{
Sampler::maximumTextureFilterQuality = maximumFilterQuality;
}
void Sampler::setMipmapQuality(MipmapType maximumFilterQuality)
{
Sampler::maximumMipmapFilterQuality = maximumFilterQuality;
}
void Sampler::setMipmapLOD(float LOD)
{
texture.LOD = LOD;
exp2LOD = exp2(LOD);
}
bool Sampler::hasTexture() const
{
return textureType != TEXTURE_NULL;
}
bool Sampler::hasUnsignedTexture() const
{
return Surface::isUnsignedComponent(internalTextureFormat, 0) &&
Surface::isUnsignedComponent(internalTextureFormat, 1) &&
Surface::isUnsignedComponent(internalTextureFormat, 2) &&
Surface::isUnsignedComponent(internalTextureFormat, 3);
}
bool Sampler::hasCubeTexture() const
{
return textureType == TEXTURE_CUBE;
}
bool Sampler::hasVolumeTexture() const
{
return textureType == TEXTURE_3D || textureType == TEXTURE_2D_ARRAY;
}
void Sampler::setSyncRequired(bool isSyncRequired)
{
syncRequired = isSyncRequired;
}
bool Sampler::requiresSync() const
{
return syncRequired;
}
const Texture &Sampler::getTextureData()
{
return texture;
}
MipmapType Sampler::mipmapFilter() const
{
if(mipmapFilterState != MIPMAP_NONE)
{
for(int i = 1; i < MIPMAP_LEVELS; i++)
{
if(texture.mipmap[0].buffer[0] != texture.mipmap[i].buffer[0])
{
return mipmapFilterState;
}
}
}
// Only one mipmap level
return MIPMAP_NONE;
}
TextureType Sampler::getTextureType() const
{
return textureType;
}
FilterType Sampler::getTextureFilter() const
{
// Don't filter 1x1 textures.
if(texture.mipmap[0].width[0] == 1 && texture.mipmap[0].height[0] == 1 && texture.mipmap[0].depth[0] == 1)
{
if(mipmapFilter() == MIPMAP_NONE)
{
return FILTER_POINT;
}
}
FilterType filter = textureFilter;
if(gather && Surface::componentCount(internalTextureFormat) == 1)
{
filter = FILTER_GATHER;
}
if(textureType != TEXTURE_2D || texture.maxAnisotropy == 1.0f)
{
return (FilterType)min(filter, FILTER_LINEAR);
}
return filter;
}
AddressingMode Sampler::getAddressingModeU() const
{
if(textureType == TEXTURE_CUBE)
{
return border ? ADDRESSING_SEAMLESS : ADDRESSING_CLAMP;
}
return addressingModeU;
}
AddressingMode Sampler::getAddressingModeV() const
{
if(textureType == TEXTURE_CUBE)
{
return border ? ADDRESSING_SEAMLESS : ADDRESSING_CLAMP;
}
return addressingModeV;
}
AddressingMode Sampler::getAddressingModeW() const
{
if(textureType == TEXTURE_2D_ARRAY ||
textureType == TEXTURE_2D ||
textureType == TEXTURE_CUBE ||
textureType == TEXTURE_RECTANGLE)
{
return ADDRESSING_LAYER;
}
return addressingModeW;
}
CompareFunc Sampler::getCompareFunc() const
{
if(getTextureFilter() == FILTER_GATHER)
{
return COMPARE_BYPASS;
}
if(internalTextureFormat == FORMAT_D32FS8_SHADOW)
{
return COMPARE_LESSEQUAL;
}
return compare;
}
}