// 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 "Blitter.hpp"
#include "Shader/ShaderCore.hpp"
#include "Reactor/Reactor.hpp"
#include "Common/Memory.hpp"
#include "Common/Debug.hpp"
namespace sw
{
Blitter::Blitter()
{
blitCache = new RoutineCache<State>(1024);
}
Blitter::~Blitter()
{
delete blitCache;
}
void Blitter::clear(void *pixel, sw::Format format, Surface *dest, const SliceRect &dRect, unsigned int rgbaMask)
{
if(fastClear(pixel, format, dest, dRect, rgbaMask))
{
return;
}
sw::Surface *color = sw::Surface::create(1, 1, 1, format, pixel, sw::Surface::bytes(format), sw::Surface::bytes(format));
SliceRectF sRect((float)dRect.x0, (float)dRect.y0, (float)dRect.x1, (float)dRect.y1, 0);
blit(color, sRect, dest, dRect, {rgbaMask});
delete color;
}
bool Blitter::fastClear(void *pixel, sw::Format format, Surface *dest, const SliceRect &dRect, unsigned int rgbaMask)
{
if(format != FORMAT_A32B32G32R32F)
{
return false;
}
float *color = (float*)pixel;
float r = color[0];
float g = color[1];
float b = color[2];
float a = color[3];
uint32_t packed;
switch(dest->getFormat())
{
case FORMAT_R5G6B5:
if((rgbaMask & 0x7) != 0x7) return false;
packed = ((uint16_t)(31 * b + 0.5f) << 0) |
((uint16_t)(63 * g + 0.5f) << 5) |
((uint16_t)(31 * r + 0.5f) << 11);
break;
case FORMAT_X8B8G8R8:
if((rgbaMask & 0x7) != 0x7) return false;
packed = ((uint32_t)(255) << 24) |
((uint32_t)(255 * b + 0.5f) << 16) |
((uint32_t)(255 * g + 0.5f) << 8) |
((uint32_t)(255 * r + 0.5f) << 0);
break;
case FORMAT_A8B8G8R8:
if((rgbaMask & 0xF) != 0xF) return false;
packed = ((uint32_t)(255 * a + 0.5f) << 24) |
((uint32_t)(255 * b + 0.5f) << 16) |
((uint32_t)(255 * g + 0.5f) << 8) |
((uint32_t)(255 * r + 0.5f) << 0);
break;
case FORMAT_X8R8G8B8:
if((rgbaMask & 0x7) != 0x7) return false;
packed = ((uint32_t)(255) << 24) |
((uint32_t)(255 * r + 0.5f) << 16) |
((uint32_t)(255 * g + 0.5f) << 8) |
((uint32_t)(255 * b + 0.5f) << 0);
break;
case FORMAT_A8R8G8B8:
if((rgbaMask & 0xF) != 0xF) return false;
packed = ((uint32_t)(255 * a + 0.5f) << 24) |
((uint32_t)(255 * r + 0.5f) << 16) |
((uint32_t)(255 * g + 0.5f) << 8) |
((uint32_t)(255 * b + 0.5f) << 0);
break;
default:
return false;
}
bool useDestInternal = !dest->isExternalDirty();
uint8_t *slice = (uint8_t*)dest->lock(dRect.x0, dRect.y0, dRect.slice, sw::LOCK_WRITEONLY, sw::PUBLIC, useDestInternal);
for(int j = 0; j < dest->getSamples(); j++)
{
uint8_t *d = slice;
switch(Surface::bytes(dest->getFormat()))
{
case 2:
for(int i = dRect.y0; i < dRect.y1; i++)
{
sw::clear((uint16_t*)d, packed, dRect.x1 - dRect.x0);
d += dest->getPitchB(useDestInternal);
}
break;
case 4:
for(int i = dRect.y0; i < dRect.y1; i++)
{
sw::clear((uint32_t*)d, packed, dRect.x1 - dRect.x0);
d += dest->getPitchB(useDestInternal);
}
break;
default:
assert(false);
}
slice += dest->getSliceB(useDestInternal);
}
dest->unlock(useDestInternal);
return true;
}
void Blitter::blit(Surface *source, const SliceRectF &sourceRect, Surface *dest, const SliceRect &destRect, const Blitter::Options& options)
{
if(dest->getInternalFormat() == FORMAT_NULL)
{
return;
}
if(blitReactor(source, sourceRect, dest, destRect, options))
{
return;
}
SliceRectF sRect = sourceRect;
SliceRect dRect = destRect;
bool flipX = destRect.x0 > destRect.x1;
bool flipY = destRect.y0 > destRect.y1;
if(flipX)
{
swap(dRect.x0, dRect.x1);
swap(sRect.x0, sRect.x1);
}
if(flipY)
{
swap(dRect.y0, dRect.y1);
swap(sRect.y0, sRect.y1);
}
source->lockInternal((int)sRect.x0, (int)sRect.y0, sRect.slice, sw::LOCK_READONLY, sw::PUBLIC);
dest->lockInternal(dRect.x0, dRect.y0, dRect.slice, sw::LOCK_WRITEONLY, sw::PUBLIC);
float w = sRect.width() / dRect.width();
float h = sRect.height() / dRect.height();
const float xStart = sRect.x0 + 0.5f * w;
float y = sRect.y0 + 0.5f * h;
for(int j = dRect.y0; j < dRect.y1; j++)
{
float x = xStart;
for(int i = dRect.x0; i < dRect.x1; i++)
{
// FIXME: Support RGBA mask
dest->copyInternal(source, i, j, x, y, options.filter);
x += w;
}
y += h;
}
source->unlockInternal();
dest->unlockInternal();
}
void Blitter::blit3D(Surface *source, Surface *dest)
{
source->lockInternal(0, 0, 0, sw::LOCK_READONLY, sw::PUBLIC);
dest->lockInternal(0, 0, 0, sw::LOCK_WRITEONLY, sw::PUBLIC);
float w = static_cast<float>(source->getWidth()) / static_cast<float>(dest->getWidth());
float h = static_cast<float>(source->getHeight()) / static_cast<float>(dest->getHeight());
float d = static_cast<float>(source->getDepth()) / static_cast<float>(dest->getDepth());
float z = 0.5f * d;
for(int k = 0; k < dest->getDepth(); k++)
{
float y = 0.5f * h;
for(int j = 0; j < dest->getHeight(); j++)
{
float x = 0.5f * w;
for(int i = 0; i < dest->getWidth(); i++)
{
dest->copyInternal(source, i, j, k, x, y, z, true);
x += w;
}
y += h;
}
z += d;
}
source->unlockInternal();
dest->unlockInternal();
}
bool Blitter::read(Float4 &c, Pointer<Byte> element, const State &state)
{
c = Float4(0.0f, 0.0f, 0.0f, 1.0f);
switch(state.sourceFormat)
{
case FORMAT_L8:
c.xyz = Float(Int(*Pointer<Byte>(element)));
c.w = float(0xFF);
break;
case FORMAT_A8:
c.w = Float(Int(*Pointer<Byte>(element)));
break;
case FORMAT_R8I:
case FORMAT_R8_SNORM:
c.x = Float(Int(*Pointer<SByte>(element)));
c.w = float(0x7F);
break;
case FORMAT_R8:
case FORMAT_R8UI:
c.x = Float(Int(*Pointer<Byte>(element)));
c.w = float(0xFF);
break;
case FORMAT_R16I:
c.x = Float(Int(*Pointer<Short>(element)));
c.w = float(0x7FFF);
break;
case FORMAT_R16UI:
c.x = Float(Int(*Pointer<UShort>(element)));
c.w = float(0xFFFF);
break;
case FORMAT_R32I:
c.x = Float(*Pointer<Int>(element));
c.w = float(0x7FFFFFFF);
break;
case FORMAT_R32UI:
c.x = Float(*Pointer<UInt>(element));
c.w = float(0xFFFFFFFF);
break;
case FORMAT_A8R8G8B8:
c = Float4(*Pointer<Byte4>(element)).zyxw;
break;
case FORMAT_A8B8G8R8I:
case FORMAT_A8B8G8R8_SNORM:
c = Float4(*Pointer<SByte4>(element));
break;
case FORMAT_A8B8G8R8:
case FORMAT_A8B8G8R8UI:
case FORMAT_SRGB8_A8:
c = Float4(*Pointer<Byte4>(element));
break;
case FORMAT_X8R8G8B8:
c = Float4(*Pointer<Byte4>(element)).zyxw;
c.w = float(0xFF);
break;
case FORMAT_R8G8B8:
c.z = Float(Int(*Pointer<Byte>(element + 0)));
c.y = Float(Int(*Pointer<Byte>(element + 1)));
c.x = Float(Int(*Pointer<Byte>(element + 2)));
c.w = float(0xFF);
break;
case FORMAT_B8G8R8:
c.x = Float(Int(*Pointer<Byte>(element + 0)));
c.y = Float(Int(*Pointer<Byte>(element + 1)));
c.z = Float(Int(*Pointer<Byte>(element + 2)));
c.w = float(0xFF);
break;
case FORMAT_X8B8G8R8I:
case FORMAT_X8B8G8R8_SNORM:
c = Float4(*Pointer<SByte4>(element));
c.w = float(0x7F);
break;
case FORMAT_X8B8G8R8:
case FORMAT_X8B8G8R8UI:
case FORMAT_SRGB8_X8:
c = Float4(*Pointer<Byte4>(element));
c.w = float(0xFF);
break;
case FORMAT_A16B16G16R16I:
c = Float4(*Pointer<Short4>(element));
break;
case FORMAT_A16B16G16R16:
case FORMAT_A16B16G16R16UI:
c = Float4(*Pointer<UShort4>(element));
break;
case FORMAT_X16B16G16R16I:
c = Float4(*Pointer<Short4>(element));
c.w = float(0x7FFF);
break;
case FORMAT_X16B16G16R16UI:
c = Float4(*Pointer<UShort4>(element));
c.w = float(0xFFFF);
break;
case FORMAT_A32B32G32R32I:
c = Float4(*Pointer<Int4>(element));
break;
case FORMAT_A32B32G32R32UI:
c = Float4(*Pointer<UInt4>(element));
break;
case FORMAT_X32B32G32R32I:
c = Float4(*Pointer<Int4>(element));
c.w = float(0x7FFFFFFF);
break;
case FORMAT_X32B32G32R32UI:
c = Float4(*Pointer<UInt4>(element));
c.w = float(0xFFFFFFFF);
break;
case FORMAT_G8R8I:
case FORMAT_G8R8_SNORM:
c.x = Float(Int(*Pointer<SByte>(element + 0)));
c.y = Float(Int(*Pointer<SByte>(element + 1)));
c.w = float(0x7F);
break;
case FORMAT_G8R8:
case FORMAT_G8R8UI:
c.x = Float(Int(*Pointer<Byte>(element + 0)));
c.y = Float(Int(*Pointer<Byte>(element + 1)));
c.w = float(0xFF);
break;
case FORMAT_G16R16I:
c.x = Float(Int(*Pointer<Short>(element + 0)));
c.y = Float(Int(*Pointer<Short>(element + 2)));
c.w = float(0x7FFF);
break;
case FORMAT_G16R16:
case FORMAT_G16R16UI:
c.x = Float(Int(*Pointer<UShort>(element + 0)));
c.y = Float(Int(*Pointer<UShort>(element + 2)));
c.w = float(0xFFFF);
break;
case FORMAT_G32R32I:
c.x = Float(*Pointer<Int>(element + 0));
c.y = Float(*Pointer<Int>(element + 4));
c.w = float(0x7FFFFFFF);
break;
case FORMAT_G32R32UI:
c.x = Float(*Pointer<UInt>(element + 0));
c.y = Float(*Pointer<UInt>(element + 4));
c.w = float(0xFFFFFFFF);
break;
case FORMAT_A32B32G32R32F:
c = *Pointer<Float4>(element);
break;
case FORMAT_X32B32G32R32F:
case FORMAT_X32B32G32R32F_UNSIGNED:
case FORMAT_B32G32R32F:
c.z = *Pointer<Float>(element + 8);
case FORMAT_G32R32F:
c.x = *Pointer<Float>(element + 0);
c.y = *Pointer<Float>(element + 4);
break;
case FORMAT_R32F:
c.x = *Pointer<Float>(element);
break;
case FORMAT_R5G6B5:
c.x = Float(Int((*Pointer<UShort>(element) & UShort(0xF800)) >> UShort(11)));
c.y = Float(Int((*Pointer<UShort>(element) & UShort(0x07E0)) >> UShort(5)));
c.z = Float(Int(*Pointer<UShort>(element) & UShort(0x001F)));
break;
case FORMAT_A2B10G10R10:
case FORMAT_A2B10G10R10UI:
c.x = Float(Int((*Pointer<UInt>(element) & UInt(0x000003FF))));
c.y = Float(Int((*Pointer<UInt>(element) & UInt(0x000FFC00)) >> 10));
c.z = Float(Int((*Pointer<UInt>(element) & UInt(0x3FF00000)) >> 20));
c.w = Float(Int((*Pointer<UInt>(element) & UInt(0xC0000000)) >> 30));
break;
case FORMAT_D16:
c.x = Float(Int((*Pointer<UShort>(element))));
break;
case FORMAT_D24S8:
c.x = Float(Int((*Pointer<UInt>(element))));
break;
case FORMAT_D32:
c.x = Float(Int((*Pointer<UInt>(element))));
break;
case FORMAT_D32F_COMPLEMENTARY:
case FORMAT_D32FS8_COMPLEMENTARY:
c.x = 1.0f - *Pointer<Float>(element);
break;
case FORMAT_D32F:
case FORMAT_D32FS8:
case FORMAT_D32F_LOCKABLE:
case FORMAT_D32FS8_TEXTURE:
case FORMAT_D32F_SHADOW:
case FORMAT_D32FS8_SHADOW:
c.x = *Pointer<Float>(element);
break;
case FORMAT_S8:
c.x = Float(Int(*Pointer<Byte>(element)));
break;
default:
return false;
}
return true;
}
bool Blitter::write(Float4 &c, Pointer<Byte> element, const State &state)
{
bool writeR = state.writeRed;
bool writeG = state.writeGreen;
bool writeB = state.writeBlue;
bool writeA = state.writeAlpha;
bool writeRGBA = writeR && writeG && writeB && writeA;
switch(state.destFormat)
{
case FORMAT_L8:
*Pointer<Byte>(element) = Byte(RoundInt(Float(c.x)));
break;
case FORMAT_A8:
if(writeA) { *Pointer<Byte>(element) = Byte(RoundInt(Float(c.w))); }
break;
case FORMAT_A8R8G8B8:
if(writeRGBA)
{
Short4 c0 = RoundShort4(c.zyxw);
*Pointer<Byte4>(element) = Byte4(PackUnsigned(c0, c0));
}
else
{
if(writeB) { *Pointer<Byte>(element + 0) = Byte(RoundInt(Float(c.z))); }
if(writeG) { *Pointer<Byte>(element + 1) = Byte(RoundInt(Float(c.y))); }
if(writeR) { *Pointer<Byte>(element + 2) = Byte(RoundInt(Float(c.x))); }
if(writeA) { *Pointer<Byte>(element + 3) = Byte(RoundInt(Float(c.w))); }
}
break;
case FORMAT_A8B8G8R8:
case FORMAT_SRGB8_A8:
if(writeRGBA)
{
Short4 c0 = RoundShort4(c);
*Pointer<Byte4>(element) = Byte4(PackUnsigned(c0, c0));
}
else
{
if(writeR) { *Pointer<Byte>(element + 0) = Byte(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<Byte>(element + 1) = Byte(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<Byte>(element + 2) = Byte(RoundInt(Float(c.z))); }
if(writeA) { *Pointer<Byte>(element + 3) = Byte(RoundInt(Float(c.w))); }
}
break;
case FORMAT_X8R8G8B8:
if(writeRGBA)
{
Short4 c0 = RoundShort4(c.zyxw) | Short4(0x0000, 0x0000, 0x0000, 0x00FF);
*Pointer<Byte4>(element) = Byte4(PackUnsigned(c0, c0));
}
else
{
if(writeB) { *Pointer<Byte>(element + 0) = Byte(RoundInt(Float(c.z))); }
if(writeG) { *Pointer<Byte>(element + 1) = Byte(RoundInt(Float(c.y))); }
if(writeR) { *Pointer<Byte>(element + 2) = Byte(RoundInt(Float(c.x))); }
if(writeA) { *Pointer<Byte>(element + 3) = Byte(0xFF); }
}
break;
case FORMAT_X8B8G8R8:
case FORMAT_SRGB8_X8:
if(writeRGBA)
{
Short4 c0 = RoundShort4(c) | Short4(0x0000, 0x0000, 0x0000, 0x00FF);
*Pointer<Byte4>(element) = Byte4(PackUnsigned(c0, c0));
}
else
{
if(writeR) { *Pointer<Byte>(element + 0) = Byte(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<Byte>(element + 1) = Byte(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<Byte>(element + 2) = Byte(RoundInt(Float(c.z))); }
if(writeA) { *Pointer<Byte>(element + 3) = Byte(0xFF); }
}
break;
case FORMAT_R8G8B8:
if(writeR) { *Pointer<Byte>(element + 2) = Byte(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<Byte>(element + 1) = Byte(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<Byte>(element + 0) = Byte(RoundInt(Float(c.z))); }
break;
case FORMAT_B8G8R8:
if(writeR) { *Pointer<Byte>(element + 0) = Byte(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<Byte>(element + 1) = Byte(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<Byte>(element + 2) = Byte(RoundInt(Float(c.z))); }
break;
case FORMAT_A32B32G32R32F:
if(writeRGBA)
{
*Pointer<Float4>(element) = c;
}
else
{
if(writeR) { *Pointer<Float>(element) = c.x; }
if(writeG) { *Pointer<Float>(element + 4) = c.y; }
if(writeB) { *Pointer<Float>(element + 8) = c.z; }
if(writeA) { *Pointer<Float>(element + 12) = c.w; }
}
break;
case FORMAT_X32B32G32R32F:
case FORMAT_X32B32G32R32F_UNSIGNED:
if(writeA) { *Pointer<Float>(element + 12) = 1.0f; }
case FORMAT_B32G32R32F:
if(writeR) { *Pointer<Float>(element) = c.x; }
if(writeG) { *Pointer<Float>(element + 4) = c.y; }
if(writeB) { *Pointer<Float>(element + 8) = c.z; }
break;
case FORMAT_G32R32F:
if(writeR && writeG)
{
*Pointer<Float2>(element) = Float2(c);
}
else
{
if(writeR) { *Pointer<Float>(element) = c.x; }
if(writeG) { *Pointer<Float>(element + 4) = c.y; }
}
break;
case FORMAT_R32F:
if(writeR) { *Pointer<Float>(element) = c.x; }
break;
case FORMAT_A8B8G8R8I:
case FORMAT_A8B8G8R8_SNORM:
if(writeA) { *Pointer<SByte>(element + 3) = SByte(RoundInt(Float(c.w))); }
case FORMAT_X8B8G8R8I:
case FORMAT_X8B8G8R8_SNORM:
if(writeA && (state.destFormat == FORMAT_X8B8G8R8I || state.destFormat == FORMAT_X8B8G8R8_SNORM))
{
*Pointer<SByte>(element + 3) = SByte(0x7F);
}
if(writeB) { *Pointer<SByte>(element + 2) = SByte(RoundInt(Float(c.z))); }
case FORMAT_G8R8I:
case FORMAT_G8R8_SNORM:
if(writeG) { *Pointer<SByte>(element + 1) = SByte(RoundInt(Float(c.y))); }
case FORMAT_R8I:
case FORMAT_R8_SNORM:
if(writeR) { *Pointer<SByte>(element) = SByte(RoundInt(Float(c.x))); }
break;
case FORMAT_A8B8G8R8UI:
if(writeA) { *Pointer<Byte>(element + 3) = Byte(RoundInt(Float(c.w))); }
case FORMAT_X8B8G8R8UI:
if(writeA && (state.destFormat == FORMAT_X8B8G8R8UI))
{
*Pointer<Byte>(element + 3) = Byte(0xFF);
}
if(writeB) { *Pointer<Byte>(element + 2) = Byte(RoundInt(Float(c.z))); }
case FORMAT_G8R8UI:
case FORMAT_G8R8:
if(writeG) { *Pointer<Byte>(element + 1) = Byte(RoundInt(Float(c.y))); }
case FORMAT_R8UI:
case FORMAT_R8:
if(writeR) { *Pointer<Byte>(element) = Byte(RoundInt(Float(c.x))); }
break;
case FORMAT_A16B16G16R16I:
if(writeRGBA)
{
*Pointer<Short4>(element) = Short4(RoundInt(c));
}
else
{
if(writeR) { *Pointer<Short>(element) = Short(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<Short>(element + 2) = Short(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<Short>(element + 4) = Short(RoundInt(Float(c.z))); }
if(writeA) { *Pointer<Short>(element + 6) = Short(RoundInt(Float(c.w))); }
}
break;
case FORMAT_X16B16G16R16I:
if(writeRGBA)
{
*Pointer<Short4>(element) = Short4(RoundInt(c));
}
else
{
if(writeR) { *Pointer<Short>(element) = Short(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<Short>(element + 2) = Short(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<Short>(element + 4) = Short(RoundInt(Float(c.z))); }
}
if(writeA) { *Pointer<Short>(element + 6) = Short(0x7F); }
break;
case FORMAT_G16R16I:
if(writeR && writeG)
{
*Pointer<Short2>(element) = Short2(Short4(RoundInt(c)));
}
else
{
if(writeR) { *Pointer<Short>(element) = Short(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<Short>(element + 2) = Short(RoundInt(Float(c.y))); }
}
break;
case FORMAT_R16I:
if(writeR) { *Pointer<Short>(element) = Short(RoundInt(Float(c.x))); }
break;
case FORMAT_A16B16G16R16UI:
case FORMAT_A16B16G16R16:
if(writeRGBA)
{
*Pointer<UShort4>(element) = UShort4(RoundInt(c));
}
else
{
if(writeR) { *Pointer<UShort>(element) = UShort(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<UShort>(element + 2) = UShort(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<UShort>(element + 4) = UShort(RoundInt(Float(c.z))); }
if(writeA) { *Pointer<UShort>(element + 6) = UShort(RoundInt(Float(c.w))); }
}
break;
case FORMAT_X16B16G16R16UI:
if(writeRGBA)
{
*Pointer<UShort4>(element) = UShort4(RoundInt(c));
}
else
{
if(writeR) { *Pointer<UShort>(element) = UShort(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<UShort>(element + 2) = UShort(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<UShort>(element + 4) = UShort(RoundInt(Float(c.z))); }
}
if(writeA) { *Pointer<UShort>(element + 6) = UShort(0xFF); }
break;
case FORMAT_G16R16UI:
case FORMAT_G16R16:
if(writeR && writeG)
{
*Pointer<UShort2>(element) = UShort2(UShort4(RoundInt(c)));
}
else
{
if(writeR) { *Pointer<UShort>(element) = UShort(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<UShort>(element + 2) = UShort(RoundInt(Float(c.y))); }
}
break;
case FORMAT_R16UI:
if(writeR) { *Pointer<UShort>(element) = UShort(RoundInt(Float(c.x))); }
break;
case FORMAT_A32B32G32R32I:
if(writeRGBA)
{
*Pointer<Int4>(element) = RoundInt(c);
}
else
{
if(writeR) { *Pointer<Int>(element) = RoundInt(Float(c.x)); }
if(writeG) { *Pointer<Int>(element + 4) = RoundInt(Float(c.y)); }
if(writeB) { *Pointer<Int>(element + 8) = RoundInt(Float(c.z)); }
if(writeA) { *Pointer<Int>(element + 12) = RoundInt(Float(c.w)); }
}
break;
case FORMAT_X32B32G32R32I:
if(writeRGBA)
{
*Pointer<Int4>(element) = RoundInt(c);
}
else
{
if(writeR) { *Pointer<Int>(element) = RoundInt(Float(c.x)); }
if(writeG) { *Pointer<Int>(element + 4) = RoundInt(Float(c.y)); }
if(writeB) { *Pointer<Int>(element + 8) = RoundInt(Float(c.z)); }
}
if(writeA) { *Pointer<Int>(element + 12) = Int(0x7FFFFFFF); }
break;
case FORMAT_G32R32I:
if(writeG) { *Pointer<Int>(element + 4) = RoundInt(Float(c.y)); }
case FORMAT_R32I:
if(writeR) { *Pointer<Int>(element) = RoundInt(Float(c.x)); }
break;
case FORMAT_A32B32G32R32UI:
if(writeRGBA)
{
*Pointer<UInt4>(element) = UInt4(RoundInt(c));
}
else
{
if(writeR) { *Pointer<UInt>(element) = As<UInt>(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<UInt>(element + 4) = As<UInt>(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<UInt>(element + 8) = As<UInt>(RoundInt(Float(c.z))); }
if(writeA) { *Pointer<UInt>(element + 12) = As<UInt>(RoundInt(Float(c.w))); }
}
break;
case FORMAT_X32B32G32R32UI:
if(writeRGBA)
{
*Pointer<UInt4>(element) = UInt4(RoundInt(c));
}
else
{
if(writeR) { *Pointer<UInt>(element) = As<UInt>(RoundInt(Float(c.x))); }
if(writeG) { *Pointer<UInt>(element + 4) = As<UInt>(RoundInt(Float(c.y))); }
if(writeB) { *Pointer<UInt>(element + 8) = As<UInt>(RoundInt(Float(c.z))); }
}
if(writeA) { *Pointer<UInt4>(element + 12) = UInt4(0xFFFFFFFF); }
break;
case FORMAT_G32R32UI:
if(writeG) { *Pointer<UInt>(element + 4) = As<UInt>(RoundInt(Float(c.y))); }
case FORMAT_R32UI:
if(writeR) { *Pointer<UInt>(element) = As<UInt>(RoundInt(Float(c.x))); }
break;
case FORMAT_R5G6B5:
if(writeR && writeG && writeB)
{
*Pointer<UShort>(element) = UShort(RoundInt(Float(c.z)) |
(RoundInt(Float(c.y)) << Int(5)) |
(RoundInt(Float(c.x)) << Int(11)));
}
else
{
unsigned short mask = (writeB ? 0x001F : 0x0000) | (writeG ? 0x07E0 : 0x0000) | (writeR ? 0xF800 : 0x0000);
unsigned short unmask = ~mask;
*Pointer<UShort>(element) = (*Pointer<UShort>(element) & UShort(unmask)) |
(UShort(RoundInt(Float(c.z)) |
(RoundInt(Float(c.y)) << Int(5)) |
(RoundInt(Float(c.x)) << Int(11))) & UShort(mask));
}
break;
case FORMAT_A2B10G10R10:
case FORMAT_A2B10G10R10UI:
if(writeRGBA)
{
*Pointer<UInt>(element) = UInt(RoundInt(Float(c.x)) |
(RoundInt(Float(c.y)) << 10) |
(RoundInt(Float(c.z)) << 20) |
(RoundInt(Float(c.w)) << 30));
}
else
{
unsigned int mask = (writeA ? 0xC0000000 : 0x0000) |
(writeB ? 0x3FF00000 : 0x0000) |
(writeG ? 0x000FFC00 : 0x0000) |
(writeR ? 0x000003FF : 0x0000);
unsigned int unmask = ~mask;
*Pointer<UInt>(element) = (*Pointer<UInt>(element) & UInt(unmask)) |
(UInt(RoundInt(Float(c.x)) |
(RoundInt(Float(c.y)) << 10) |
(RoundInt(Float(c.z)) << 20) |
(RoundInt(Float(c.w)) << 30)) & UInt(mask));
}
break;
case FORMAT_D16:
*Pointer<UShort>(element) = UShort(RoundInt(Float(c.x)));
break;
case FORMAT_D24S8:
*Pointer<UInt>(element) = UInt(RoundInt(Float(c.x)));
break;
case FORMAT_D32:
*Pointer<UInt>(element) = UInt(RoundInt(Float(c.x)));
break;
case FORMAT_D32F_COMPLEMENTARY:
case FORMAT_D32FS8_COMPLEMENTARY:
*Pointer<Float>(element) = 1.0f - c.x;
break;
case FORMAT_D32F:
case FORMAT_D32FS8:
case FORMAT_D32F_LOCKABLE:
case FORMAT_D32FS8_TEXTURE:
case FORMAT_D32F_SHADOW:
case FORMAT_D32FS8_SHADOW:
*Pointer<Float>(element) = c.x;
break;
case FORMAT_S8:
*Pointer<Byte>(element) = Byte(RoundInt(Float(c.x)));
break;
default:
return false;
}
return true;
}
bool Blitter::read(Int4 &c, Pointer<Byte> element, const State &state)
{
c = Int4(0, 0, 0, 1);
switch(state.sourceFormat)
{
case FORMAT_A8B8G8R8I:
c = Insert(c, Int(*Pointer<SByte>(element + 3)), 3);
case FORMAT_X8B8G8R8I:
c = Insert(c, Int(*Pointer<SByte>(element + 2)), 2);
case FORMAT_G8R8I:
c = Insert(c, Int(*Pointer<SByte>(element + 1)), 1);
case FORMAT_R8I:
c = Insert(c, Int(*Pointer<SByte>(element)), 0);
break;
case FORMAT_A8B8G8R8UI:
c = Insert(c, Int(*Pointer<Byte>(element + 3)), 3);
case FORMAT_X8B8G8R8UI:
c = Insert(c, Int(*Pointer<Byte>(element + 2)), 2);
case FORMAT_G8R8UI:
c = Insert(c, Int(*Pointer<Byte>(element + 1)), 1);
case FORMAT_R8UI:
c = Insert(c, Int(*Pointer<Byte>(element)), 0);
break;
case FORMAT_A16B16G16R16I:
c = Insert(c, Int(*Pointer<Short>(element + 6)), 3);
case FORMAT_X16B16G16R16I:
c = Insert(c, Int(*Pointer<Short>(element + 4)), 2);
case FORMAT_G16R16I:
c = Insert(c, Int(*Pointer<Short>(element + 2)), 1);
case FORMAT_R16I:
c = Insert(c, Int(*Pointer<Short>(element)), 0);
break;
case FORMAT_A16B16G16R16UI:
c = Insert(c, Int(*Pointer<UShort>(element + 6)), 3);
case FORMAT_X16B16G16R16UI:
c = Insert(c, Int(*Pointer<UShort>(element + 4)), 2);
case FORMAT_G16R16UI:
c = Insert(c, Int(*Pointer<UShort>(element + 2)), 1);
case FORMAT_R16UI:
c = Insert(c, Int(*Pointer<UShort>(element)), 0);
break;
case FORMAT_A32B32G32R32I:
case FORMAT_A32B32G32R32UI:
c = *Pointer<Int4>(element);
break;
case FORMAT_X32B32G32R32I:
case FORMAT_X32B32G32R32UI:
c = Insert(c, *Pointer<Int>(element + 8), 2);
case FORMAT_G32R32I:
case FORMAT_G32R32UI:
c = Insert(c, *Pointer<Int>(element + 4), 1);
case FORMAT_R32I:
case FORMAT_R32UI:
c = Insert(c, *Pointer<Int>(element), 0);
break;
default:
return false;
}
return true;
}
bool Blitter::write(Int4 &c, Pointer<Byte> element, const State &state)
{
bool writeR = state.writeRed;
bool writeG = state.writeGreen;
bool writeB = state.writeBlue;
bool writeA = state.writeAlpha;
bool writeRGBA = writeR && writeG && writeB && writeA;
switch(state.destFormat)
{
case FORMAT_A8B8G8R8I:
if(writeA) { *Pointer<SByte>(element + 3) = SByte(Extract(c, 3)); }
case FORMAT_X8B8G8R8I:
if(writeA && (state.destFormat != FORMAT_A8B8G8R8I))
{
*Pointer<SByte>(element + 3) = SByte(0x7F);
}
if(writeB) { *Pointer<SByte>(element + 2) = SByte(Extract(c, 2)); }
case FORMAT_G8R8I:
if(writeG) { *Pointer<SByte>(element + 1) = SByte(Extract(c, 1)); }
case FORMAT_R8I:
if(writeR) { *Pointer<SByte>(element) = SByte(Extract(c, 0)); }
break;
case FORMAT_A8B8G8R8UI:
if(writeA) { *Pointer<Byte>(element + 3) = Byte(Extract(c, 3)); }
case FORMAT_X8B8G8R8UI:
if(writeA && (state.destFormat != FORMAT_A8B8G8R8UI))
{
*Pointer<Byte>(element + 3) = Byte(0xFF);
}
if(writeB) { *Pointer<Byte>(element + 2) = Byte(Extract(c, 2)); }
case FORMAT_G8R8UI:
if(writeG) { *Pointer<Byte>(element + 1) = Byte(Extract(c, 1)); }
case FORMAT_R8UI:
if(writeR) { *Pointer<Byte>(element) = Byte(Extract(c, 0)); }
break;
case FORMAT_A16B16G16R16I:
if(writeA) { *Pointer<Short>(element + 6) = Short(Extract(c, 3)); }
case FORMAT_X16B16G16R16I:
if(writeA && (state.destFormat != FORMAT_A16B16G16R16I))
{
*Pointer<Short>(element + 6) = Short(0x7FFF);
}
if(writeB) { *Pointer<Short>(element + 4) = Short(Extract(c, 2)); }
case FORMAT_G16R16I:
if(writeG) { *Pointer<Short>(element + 2) = Short(Extract(c, 1)); }
case FORMAT_R16I:
if(writeR) { *Pointer<Short>(element) = Short(Extract(c, 0)); }
break;
case FORMAT_A16B16G16R16UI:
if(writeA) { *Pointer<UShort>(element + 6) = UShort(Extract(c, 3)); }
case FORMAT_X16B16G16R16UI:
if(writeA && (state.destFormat != FORMAT_A16B16G16R16UI))
{
*Pointer<UShort>(element + 6) = UShort(0xFFFF);
}
if(writeB) { *Pointer<UShort>(element + 4) = UShort(Extract(c, 2)); }
case FORMAT_G16R16UI:
if(writeG) { *Pointer<UShort>(element + 2) = UShort(Extract(c, 1)); }
case FORMAT_R16UI:
if(writeR) { *Pointer<UShort>(element) = UShort(Extract(c, 0)); }
break;
case FORMAT_A32B32G32R32I:
if(writeRGBA)
{
*Pointer<Int4>(element) = c;
}
else
{
if(writeR) { *Pointer<Int>(element) = Extract(c, 0); }
if(writeG) { *Pointer<Int>(element + 4) = Extract(c, 1); }
if(writeB) { *Pointer<Int>(element + 8) = Extract(c, 2); }
if(writeA) { *Pointer<Int>(element + 12) = Extract(c, 3); }
}
break;
case FORMAT_X32B32G32R32I:
if(writeRGBA)
{
*Pointer<Int4>(element) = c;
}
else
{
if(writeR) { *Pointer<Int>(element) = Extract(c, 0); }
if(writeG) { *Pointer<Int>(element + 4) = Extract(c, 1); }
if(writeB) { *Pointer<Int>(element + 8) = Extract(c, 2); }
}
if(writeA) { *Pointer<Int>(element + 12) = Int(0x7FFFFFFF); }
break;
case FORMAT_G32R32I:
if(writeR) { *Pointer<Int>(element) = Extract(c, 0); }
if(writeG) { *Pointer<Int>(element + 4) = Extract(c, 1); }
break;
case FORMAT_R32I:
if(writeR) { *Pointer<Int>(element) = Extract(c, 0); }
break;
case FORMAT_A32B32G32R32UI:
if(writeRGBA)
{
*Pointer<UInt4>(element) = As<UInt4>(c);
}
else
{
if(writeR) { *Pointer<UInt>(element) = As<UInt>(Extract(c, 0)); }
if(writeG) { *Pointer<UInt>(element + 4) = As<UInt>(Extract(c, 1)); }
if(writeB) { *Pointer<UInt>(element + 8) = As<UInt>(Extract(c, 2)); }
if(writeA) { *Pointer<UInt>(element + 12) = As<UInt>(Extract(c, 3)); }
}
break;
case FORMAT_X32B32G32R32UI:
if(writeRGBA)
{
*Pointer<UInt4>(element) = As<UInt4>(c);
}
else
{
if(writeR) { *Pointer<UInt>(element) = As<UInt>(Extract(c, 0)); }
if(writeG) { *Pointer<UInt>(element + 4) = As<UInt>(Extract(c, 1)); }
if(writeB) { *Pointer<UInt>(element + 8) = As<UInt>(Extract(c, 2)); }
}
if(writeA) { *Pointer<UInt>(element + 3) = UInt(0xFFFFFFFF); }
break;
case FORMAT_G32R32UI:
if(writeR) { *Pointer<UInt>(element) = As<UInt>(Extract(c, 0)); }
if(writeG) { *Pointer<UInt>(element + 4) = As<UInt>(Extract(c, 1)); }
break;
case FORMAT_R32UI:
if(writeR) { *Pointer<UInt>(element) = As<UInt>(Extract(c, 0)); }
break;
default:
return false;
}
return true;
}
bool Blitter::GetScale(float4 &scale, Format format)
{
switch(format)
{
case FORMAT_L8:
case FORMAT_A8:
case FORMAT_A8R8G8B8:
case FORMAT_X8R8G8B8:
case FORMAT_R8:
case FORMAT_G8R8:
case FORMAT_R8G8B8:
case FORMAT_B8G8R8:
case FORMAT_X8B8G8R8:
case FORMAT_A8B8G8R8:
case FORMAT_SRGB8_X8:
case FORMAT_SRGB8_A8:
scale = vector(0xFF, 0xFF, 0xFF, 0xFF);
break;
case FORMAT_R8_SNORM:
case FORMAT_G8R8_SNORM:
case FORMAT_X8B8G8R8_SNORM:
case FORMAT_A8B8G8R8_SNORM:
scale = vector(0x7F, 0x7F, 0x7F, 0x7F);
break;
case FORMAT_A16B16G16R16:
scale = vector(0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF);
break;
case FORMAT_R8I:
case FORMAT_R8UI:
case FORMAT_G8R8I:
case FORMAT_G8R8UI:
case FORMAT_X8B8G8R8I:
case FORMAT_X8B8G8R8UI:
case FORMAT_A8B8G8R8I:
case FORMAT_A8B8G8R8UI:
case FORMAT_R16I:
case FORMAT_R16UI:
case FORMAT_G16R16:
case FORMAT_G16R16I:
case FORMAT_G16R16UI:
case FORMAT_X16B16G16R16I:
case FORMAT_X16B16G16R16UI:
case FORMAT_A16B16G16R16I:
case FORMAT_A16B16G16R16UI:
case FORMAT_R32I:
case FORMAT_R32UI:
case FORMAT_G32R32I:
case FORMAT_G32R32UI:
case FORMAT_X32B32G32R32I:
case FORMAT_X32B32G32R32UI:
case FORMAT_A32B32G32R32I:
case FORMAT_A32B32G32R32UI:
case FORMAT_A32B32G32R32F:
case FORMAT_X32B32G32R32F:
case FORMAT_X32B32G32R32F_UNSIGNED:
case FORMAT_B32G32R32F:
case FORMAT_G32R32F:
case FORMAT_R32F:
case FORMAT_A2B10G10R10UI:
scale = vector(1.0f, 1.0f, 1.0f, 1.0f);
break;
case FORMAT_R5G6B5:
scale = vector(0x1F, 0x3F, 0x1F, 1.0f);
break;
case FORMAT_A2B10G10R10:
scale = vector(0x3FF, 0x3FF, 0x3FF, 0x03);
break;
case FORMAT_D16:
scale = vector(0xFFFF, 0.0f, 0.0f, 0.0f);
break;
case FORMAT_D24S8:
scale = vector(0xFFFFFF, 0.0f, 0.0f, 0.0f);
break;
case FORMAT_D32:
scale = vector(static_cast<float>(0xFFFFFFFF), 0.0f, 0.0f, 0.0f);
break;
case FORMAT_D32F:
case FORMAT_D32FS8:
case FORMAT_D32F_COMPLEMENTARY:
case FORMAT_D32FS8_COMPLEMENTARY:
case FORMAT_D32F_LOCKABLE:
case FORMAT_D32FS8_TEXTURE:
case FORMAT_D32F_SHADOW:
case FORMAT_D32FS8_SHADOW:
case FORMAT_S8:
scale = vector(1.0f, 1.0f, 1.0f, 1.0f);
break;
default:
return false;
}
return true;
}
bool Blitter::ApplyScaleAndClamp(Float4 &value, const State &state, bool preScaled)
{
float4 scale, unscale;
if(state.clearOperation &&
Surface::isNonNormalizedInteger(state.sourceFormat) &&
!Surface::isNonNormalizedInteger(state.destFormat))
{
// If we're clearing a buffer from an int or uint color into a normalized color,
// then the whole range of the int or uint color must be scaled between 0 and 1.
switch(state.sourceFormat)
{
case FORMAT_A32B32G32R32I:
unscale = replicate(static_cast<float>(0x7FFFFFFF));
break;
case FORMAT_A32B32G32R32UI:
unscale = replicate(static_cast<float>(0xFFFFFFFF));
break;
default:
return false;
}
}
else if(!GetScale(unscale, state.sourceFormat))
{
return false;
}
if(!GetScale(scale, state.destFormat))
{
return false;
}
bool srcSRGB = Surface::isSRGBformat(state.sourceFormat);
bool dstSRGB = Surface::isSRGBformat(state.destFormat);
if(state.convertSRGB && ((srcSRGB && !preScaled) || dstSRGB)) // One of the formats is sRGB encoded.
{
value *= preScaled ? Float4(1.0f / scale.x, 1.0f / scale.y, 1.0f / scale.z, 1.0f / scale.w) : // Unapply scale
Float4(1.0f / unscale.x, 1.0f / unscale.y, 1.0f / unscale.z, 1.0f / unscale.w); // Apply unscale
value = (srcSRGB && !preScaled) ? sRGBtoLinear(value) : LinearToSRGB(value);
value *= Float4(scale.x, scale.y, scale.z, scale.w); // Apply scale
}
else if(unscale != scale)
{
value *= Float4(scale.x / unscale.x, scale.y / unscale.y, scale.z / unscale.z, scale.w / unscale.w);
}
if(state.destFormat == FORMAT_X32B32G32R32F_UNSIGNED)
{
value = Max(value, Float4(0.0f)); // TODO: Only necessary if source is signed.
}
else if(Surface::isFloatFormat(state.sourceFormat) && !Surface::isFloatFormat(state.destFormat))
{
value = Min(value, Float4(scale.x, scale.y, scale.z, scale.w));
value = Max(value, Float4(Surface::isUnsignedComponent(state.destFormat, 0) ? 0.0f : -scale.x,
Surface::isUnsignedComponent(state.destFormat, 1) ? 0.0f : -scale.y,
Surface::isUnsignedComponent(state.destFormat, 2) ? 0.0f : -scale.z,
Surface::isUnsignedComponent(state.destFormat, 3) ? 0.0f : -scale.w));
}
return true;
}
Int Blitter::ComputeOffset(Int &x, Int &y, Int &pitchB, int bytes, bool quadLayout)
{
if(!quadLayout)
{
return y * pitchB + x * bytes;
}
else
{
// (x & ~1) * 2 + (x & 1) == (x - (x & 1)) * 2 + (x & 1) == x * 2 - (x & 1) * 2 + (x & 1) == x * 2 - (x & 1)
return (y & Int(~1)) * pitchB +
((y & Int(1)) * 2 + x * 2 - (x & Int(1))) * bytes;
}
}
Float4 Blitter::LinearToSRGB(Float4 &c)
{
Float4 lc = Min(c, Float4(0.0031308f)) * Float4(12.92f);
Float4 ec = Float4(1.055f) * power(c, Float4(1.0f / 2.4f)) - Float4(0.055f);
Float4 s = c;
s.xyz = Max(lc, ec);
return s;
}
Float4 Blitter::sRGBtoLinear(Float4 &c)
{
Float4 lc = c * Float4(1.0f / 12.92f);
Float4 ec = power((c + Float4(0.055f)) * Float4(1.0f / 1.055f), Float4(2.4f));
Int4 linear = CmpLT(c, Float4(0.04045f));
Float4 s = c;
s.xyz = As<Float4>((linear & As<Int4>(lc)) | (~linear & As<Int4>(ec))); // FIXME: IfThenElse()
return s;
}
Routine *Blitter::generate(const State &state)
{
Function<Void(Pointer<Byte>)> function;
{
Pointer<Byte> blit(function.Arg<0>());
Pointer<Byte> source = *Pointer<Pointer<Byte>>(blit + OFFSET(BlitData,source));
Pointer<Byte> dest = *Pointer<Pointer<Byte>>(blit + OFFSET(BlitData,dest));
Int sPitchB = *Pointer<Int>(blit + OFFSET(BlitData,sPitchB));
Int dPitchB = *Pointer<Int>(blit + OFFSET(BlitData,dPitchB));
Float x0 = *Pointer<Float>(blit + OFFSET(BlitData,x0));
Float y0 = *Pointer<Float>(blit + OFFSET(BlitData,y0));
Float w = *Pointer<Float>(blit + OFFSET(BlitData,w));
Float h = *Pointer<Float>(blit + OFFSET(BlitData,h));
Int x0d = *Pointer<Int>(blit + OFFSET(BlitData,x0d));
Int x1d = *Pointer<Int>(blit + OFFSET(BlitData,x1d));
Int y0d = *Pointer<Int>(blit + OFFSET(BlitData,y0d));
Int y1d = *Pointer<Int>(blit + OFFSET(BlitData,y1d));
Int sWidth = *Pointer<Int>(blit + OFFSET(BlitData,sWidth));
Int sHeight = *Pointer<Int>(blit + OFFSET(BlitData,sHeight));
bool intSrc = Surface::isNonNormalizedInteger(state.sourceFormat);
bool intDst = Surface::isNonNormalizedInteger(state.destFormat);
bool intBoth = intSrc && intDst;
bool srcQuadLayout = Surface::hasQuadLayout(state.sourceFormat);
bool dstQuadLayout = Surface::hasQuadLayout(state.destFormat);
int srcBytes = Surface::bytes(state.sourceFormat);
int dstBytes = Surface::bytes(state.destFormat);
bool hasConstantColorI = false;
Int4 constantColorI;
bool hasConstantColorF = false;
Float4 constantColorF;
if(state.clearOperation)
{
if(intBoth) // Integer types
{
if(!read(constantColorI, source, state))
{
return nullptr;
}
hasConstantColorI = true;
}
else
{
if(!read(constantColorF, source, state))
{
return nullptr;
}
hasConstantColorF = true;
if(!ApplyScaleAndClamp(constantColorF, state))
{
return nullptr;
}
}
}
Float y = y0;
For(Int j = y0d, j < y1d, j++)
{
Float x = x0;
Pointer<Byte> destLine = dest + (dstQuadLayout ? j & Int(~1) : RValue<Int>(j)) * dPitchB;
For(Int i = x0d, i < x1d, i++)
{
Pointer<Byte> d = destLine + (dstQuadLayout ? (((j & Int(1)) << 1) + (i * 2) - (i & Int(1))) : RValue<Int>(i)) * dstBytes;
if(hasConstantColorI)
{
if(!write(constantColorI, d, state))
{
return nullptr;
}
}
else if(hasConstantColorF)
{
for(int s = 0; s < state.destSamples; s++)
{
if(!write(constantColorF, d, state))
{
return nullptr;
}
d += *Pointer<Int>(blit + OFFSET(BlitData, dSliceB));
}
}
else if(intBoth) // Integer types do not support filtering
{
Int4 color; // When both formats are true integer types, we don't go to float to avoid losing precision
Int X = Int(x);
Int Y = Int(y);
if(state.clampToEdge)
{
X = Clamp(X, 0, sWidth - 1);
Y = Clamp(Y, 0, sHeight - 1);
}
Pointer<Byte> s = source + ComputeOffset(X, Y, sPitchB, srcBytes, srcQuadLayout);
if(!read(color, s, state))
{
return nullptr;
}
if(!write(color, d, state))
{
return nullptr;
}
}
else
{
Float4 color;
bool preScaled = false;
if(!state.filter || intSrc)
{
Int X = Int(x);
Int Y = Int(y);
if(state.clampToEdge)
{
X = Clamp(X, 0, sWidth - 1);
Y = Clamp(Y, 0, sHeight - 1);
}
Pointer<Byte> s = source + ComputeOffset(X, Y, sPitchB, srcBytes, srcQuadLayout);
if(!read(color, s, state))
{
return nullptr;
}
}
else // Bilinear filtering
{
Float X = x;
Float Y = y;
if(state.clampToEdge)
{
X = Min(Max(x, 0.5f), Float(sWidth) - 0.5f);
Y = Min(Max(y, 0.5f), Float(sHeight) - 0.5f);
}
Float x0 = X - 0.5f;
Float y0 = Y - 0.5f;
Int X0 = Max(Int(x0), 0);
Int Y0 = Max(Int(y0), 0);
Int X1 = X0 + 1;
Int Y1 = Y0 + 1;
X1 = IfThenElse(X1 >= sWidth, X0, X1);
Y1 = IfThenElse(Y1 >= sHeight, Y0, Y1);
Pointer<Byte> s00 = source + ComputeOffset(X0, Y0, sPitchB, srcBytes, srcQuadLayout);
Pointer<Byte> s01 = source + ComputeOffset(X1, Y0, sPitchB, srcBytes, srcQuadLayout);
Pointer<Byte> s10 = source + ComputeOffset(X0, Y1, sPitchB, srcBytes, srcQuadLayout);
Pointer<Byte> s11 = source + ComputeOffset(X1, Y1, sPitchB, srcBytes, srcQuadLayout);
Float4 c00; if(!read(c00, s00, state)) return nullptr;
Float4 c01; if(!read(c01, s01, state)) return nullptr;
Float4 c10; if(!read(c10, s10, state)) return nullptr;
Float4 c11; if(!read(c11, s11, state)) return nullptr;
if(state.convertSRGB && Surface::isSRGBformat(state.sourceFormat)) // sRGB -> RGB
{
if(!ApplyScaleAndClamp(c00, state)) return nullptr;
if(!ApplyScaleAndClamp(c01, state)) return nullptr;
if(!ApplyScaleAndClamp(c10, state)) return nullptr;
if(!ApplyScaleAndClamp(c11, state)) return nullptr;
preScaled = true;
}
Float4 fx = Float4(x0 - Float(X0));
Float4 fy = Float4(y0 - Float(Y0));
Float4 ix = Float4(1.0f) - fx;
Float4 iy = Float4(1.0f) - fy;
color = (c00 * ix + c01 * fx) * iy +
(c10 * ix + c11 * fx) * fy;
}
if(!ApplyScaleAndClamp(color, state, preScaled))
{
return nullptr;
}
for(int s = 0; s < state.destSamples; s++)
{
if(!write(color, d, state))
{
return nullptr;
}
d += *Pointer<Int>(blit + OFFSET(BlitData,dSliceB));
}
}
if(!state.clearOperation) { x += w; }
}
if(!state.clearOperation) { y += h; }
}
}
return function(L"BlitRoutine");
}
bool Blitter::blitReactor(Surface *source, const SliceRectF &sourceRect, Surface *dest, const SliceRect &destRect, const Blitter::Options &options)
{
ASSERT(!options.clearOperation || ((source->getWidth() == 1) && (source->getHeight() == 1) && (source->getDepth() == 1)));
Rect dRect = destRect;
RectF sRect = sourceRect;
if(destRect.x0 > destRect.x1)
{
swap(dRect.x0, dRect.x1);
swap(sRect.x0, sRect.x1);
}
if(destRect.y0 > destRect.y1)
{
swap(dRect.y0, dRect.y1);
swap(sRect.y0, sRect.y1);
}
State state(options);
state.clampToEdge = (sourceRect.x0 < 0.0f) ||
(sourceRect.y0 < 0.0f) ||
(sourceRect.x1 > (float)source->getWidth()) ||
(sourceRect.y1 > (float)source->getHeight());
bool useSourceInternal = !source->isExternalDirty();
bool useDestInternal = !dest->isExternalDirty();
bool isStencil = options.useStencil;
state.sourceFormat = isStencil ? source->getStencilFormat() : source->getFormat(useSourceInternal);
state.destFormat = isStencil ? dest->getStencilFormat() : dest->getFormat(useDestInternal);
state.destSamples = dest->getSamples();
criticalSection.lock();
Routine *blitRoutine = blitCache->query(state);
if(!blitRoutine)
{
blitRoutine = generate(state);
if(!blitRoutine)
{
criticalSection.unlock();
return false;
}
blitCache->add(state, blitRoutine);
}
criticalSection.unlock();
void (*blitFunction)(const BlitData *data) = (void(*)(const BlitData*))blitRoutine->getEntry();
BlitData data;
bool isRGBA = options.writeMask == 0xF;
bool isEntireDest = dest->isEntire(destRect);
data.source = isStencil ? source->lockStencil(0, 0, 0, sw::PUBLIC) :
source->lock(0, 0, sourceRect.slice, sw::LOCK_READONLY, sw::PUBLIC, useSourceInternal);
data.dest = isStencil ? dest->lockStencil(0, 0, 0, sw::PUBLIC) :
dest->lock(0, 0, destRect.slice, isRGBA ? (isEntireDest ? sw::LOCK_DISCARD : sw::LOCK_WRITEONLY) : sw::LOCK_READWRITE, sw::PUBLIC, useDestInternal);
data.sPitchB = isStencil ? source->getStencilPitchB() : source->getPitchB(useSourceInternal);
data.dPitchB = isStencil ? dest->getStencilPitchB() : dest->getPitchB(useDestInternal);
data.dSliceB = isStencil ? dest->getStencilSliceB() : dest->getSliceB(useDestInternal);
data.w = sRect.width() / dRect.width();
data.h = sRect.height() / dRect.height();
data.x0 = sRect.x0 + 0.5f * data.w;
data.y0 = sRect.y0 + 0.5f * data.h;
data.x0d = dRect.x0;
data.x1d = dRect.x1;
data.y0d = dRect.y0;
data.y1d = dRect.y1;
data.sWidth = source->getWidth();
data.sHeight = source->getHeight();
blitFunction(&data);
if(isStencil)
{
source->unlockStencil();
dest->unlockStencil();
}
else
{
source->unlock(useSourceInternal);
dest->unlock(useDestInternal);
}
return true;
}
}