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gerrit-public.fairphone.software / platform / external / swiftshader / 34cab51bf94edbb6b96e9d0edba678fcf711cd77 / . / src / Renderer / Blitter.cpp
blob: afa91874184b8eb8f74c753354c8c4d0dd72b29f [file] [log] [blame]
// SwiftShader Software Renderer
//
// Copyright(c) 2005-2013 TransGaming Inc.
//
// All rights reserved. No part of this software may be copied, distributed, transmitted,
// transcribed, stored in a retrieval system, translated into any human or computer
// language by any means, or disclosed to third parties without the explicit written
// agreement of TransGaming Inc. Without such an agreement, no rights or licenses, express
// or implied, including but not limited to any patent rights, are granted to you.
//
#include "Blitter.hpp"
#include "Common/Debug.hpp"
#include "Reactor/Reactor.hpp"
namespace sw
{
Blitter blitter;
Blitter::Blitter()
{
blitCache = new RoutineCache<BlitState>(1024);
}
Blitter::~Blitter()
{
delete blitCache;
}
void Blitter::blit(Surface *source, const SliceRect &sourceRect, Surface *dest, const SliceRect &destRect, bool filter)
{
if(blitReactor(source, sourceRect, dest, destRect, filter))
{
return;
}
SliceRect 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(sRect.x0, sRect.y0, sRect.slice, sw::LOCK_READONLY, sw::PUBLIC);
dest->lockInternal(dRect.x0, dRect.y0, dRect.slice, sw::LOCK_WRITEONLY, sw::PUBLIC);
float w = static_cast<float>(sRect.x1 - sRect.x0) / static_cast<float>(dRect.x1 - dRect.x0);
float h = static_cast<float>(sRect.y1 - sRect.y0) / static_cast<float>(dRect.y1 - dRect.y0);
const float xStart = (float)sRect.x0 + 0.5f * w;
float y = (float)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++)
{
dest->copyInternal(source, i, j, x, y, 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, Format format)
{
c = Float4(1.0f, 1.0f, 1.0f, 1.0f);
switch(format)
{
case FORMAT_L8:
c.xyz = Float(Int(*Pointer<Byte>(element)));
break;
case FORMAT_A8:
c.xyz = 0.0f;
c.w = Float(Int(*Pointer<Byte>(element)));
break;
case FORMAT_R8I:
c.yzw = 0.0f;
c.x = Float(Int(*Pointer<SByte>(element)));
break;
case FORMAT_R8UI:
c.yzw = 0.0f;
c.x = Float(Int(*Pointer<Byte>(element)));
break;
case FORMAT_R8I_SNORM:
c.yzw = 0.0f;
c.x = Float(Int(*Pointer<SByte>(element)));
break;
case FORMAT_R8:
c.yzw = 0.0f;
c.x = Float(Int(*Pointer<Byte>(element)));
break;
case FORMAT_R16I:
c.yzw = 0.0f;
c.x = Float(Int(*Pointer<Short>(element)));
break;
case FORMAT_R16UI:
c.yzw = 0.0f;
c.x = Float(Int(*Pointer<UShort>(element)));
break;
case FORMAT_R32I:
c.yzw = 0.0f;
c.x = Float(Int(*Pointer<Int>(element)));
break;
case FORMAT_R32UI:
c.yzw = 0.0f;
c.x = Float(Int(*Pointer<UInt>(element)));
break;
case FORMAT_A8R8G8B8:
c = Float4(*Pointer<Byte4>(element)).zyxw;
break;
case FORMAT_A8B8G8R8I:
c = Float4(*Pointer<SByte4>(element));
break;
case FORMAT_A8B8G8R8UI:
c = Float4(*Pointer<Byte4>(element));
break;
case FORMAT_A8B8G8R8I_SNORM:
c = Float4(*Pointer<SByte4>(element));
break;
case FORMAT_A8B8G8R8:
c = Float4(*Pointer<Byte4>(element));
break;
case FORMAT_X8R8G8B8:
c = Float4(*Pointer<Byte4>(element)).zyxw;
c.w = 1.0f;
break;
case FORMAT_X8B8G8R8I:
c = Float4(*Pointer<SByte4>(element));
c.w = 1.0f;
break;
case FORMAT_X8B8G8R8UI:
c = Float4(*Pointer<Byte4>(element));
c.w = 1.0f;
break;
case FORMAT_X8B8G8R8I_SNORM:
c = Float4(*Pointer<SByte4>(element));
c.w = 1.0f;
break;
case FORMAT_X8B8G8R8:
c = Float4(*Pointer<Byte4>(element));
c.w = 1.0f;
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 = 1.0f;
break;
case FORMAT_X16B16G16R16UI:
c = Float4(*Pointer<UShort4>(element));
c.w = 1.0f;
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 = 1.0f;
break;
case FORMAT_X32B32G32R32UI:
c = Float4(*Pointer<UInt4>(element));
c.w = 1.0f;
break;
case FORMAT_G8R8I:
c.x = Float(Int(*Pointer<SByte>(element + 0)));
c.y = Float(Int(*Pointer<SByte>(element + 1)));
break;
case FORMAT_G8R8UI:
c.x = Float(Int(*Pointer<Byte>(element + 0)));
c.y = Float(Int(*Pointer<Byte>(element + 1)));
break;
case FORMAT_G8R8I_SNORM:
c.x = Float(Int(*Pointer<SByte>(element + 0)));
c.y = Float(Int(*Pointer<SByte>(element + 1)));
break;
case FORMAT_G8R8:
c.x = Float(Int(*Pointer<Byte>(element + 0)));
c.y = Float(Int(*Pointer<Byte>(element + 1)));
break;
case FORMAT_G16R16I:
c.x = Float(Int(*Pointer<Short>(element + 0)));
c.y = Float(Int(*Pointer<Short>(element + 2)));
break;
case FORMAT_G16R16:
case FORMAT_G16R16UI:
c.x = Float(Int(*Pointer<UShort>(element + 0)));
c.y = Float(Int(*Pointer<UShort>(element + 2)));
break;
case FORMAT_G32R32I:
c.x = Float(Int(*Pointer<Int>(element + 0)));
c.y = Float(Int(*Pointer<Int>(element + 4)));
break;
case FORMAT_G32R32UI:
c.x = Float(Int(*Pointer<UInt>(element + 0)));
c.y = Float(Int(*Pointer<UInt>(element + 4)));
break;
case FORMAT_A32B32G32R32F:
c = *Pointer<Float4>(element);
break;
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;
default:
return false;
}
return true;
}
bool Blitter::write(Float4 &c, Pointer<Byte> element, Format format)
{
switch(format)
{
case FORMAT_L8:
*Pointer<Byte>(element) = Byte(RoundInt(Float(c.x)));
break;
case FORMAT_A8:
*Pointer<Byte>(element) = Byte(RoundInt(Float(c.w)));
break;
case FORMAT_A8R8G8B8:
{
UShort4 c0 = As<UShort4>(RoundShort4(c.zyxw));
Byte8 c1 = Pack(c0, c0);
*Pointer<UInt>(element) = UInt(As<Long>(c1));
}
break;
case FORMAT_A8B8G8R8:
{
UShort4 c0 = As<UShort4>(RoundShort4(c));
Byte8 c1 = Pack(c0, c0);
*Pointer<UInt>(element) = UInt(As<Long>(c1));
}
break;
case FORMAT_X8R8G8B8:
{
UShort4 c0 = As<UShort4>(RoundShort4(c.zyxw));
Byte8 c1 = Pack(c0, c0);
*Pointer<UInt>(element) = UInt(As<Long>(c1)) | 0xFF000000;
}
break;
case FORMAT_X8B8G8R8:
{
UShort4 c0 = As<UShort4>(RoundShort4(c));
Byte8 c1 = Pack(c0, c0);
*Pointer<UInt>(element) = UInt(As<Long>(c1)) | 0xFF000000;
}
break;
case FORMAT_A32B32G32R32F:
*Pointer<Float4>(element) = c;
break;
case FORMAT_G32R32F:
*Pointer<Float2>(element) = Float2(c);
break;
case FORMAT_R32F:
*Pointer<Float>(element) = c.x;
break;
case FORMAT_A8B8G8R8I:
case FORMAT_A8B8G8R8I_SNORM:
*Pointer<SByte>(element + 3) = As<SByte>(RoundInt(Float(c.w)));
case FORMAT_X8B8G8R8I:
case FORMAT_X8B8G8R8I_SNORM:
if(format == FORMAT_X8B8G8R8I || format == FORMAT_X8B8G8R8I_SNORM)
{
*Pointer<SByte>(element + 3) = SByte(0x7F);
}
*Pointer<SByte>(element + 2) = As<SByte>(RoundInt(Float(c.z)));
case FORMAT_G8R8I:
case FORMAT_G8R8I_SNORM:
*Pointer<SByte>(element + 1) = As<SByte>(RoundInt(Float(c.y)));
case FORMAT_R8I:
case FORMAT_R8I_SNORM:
*Pointer<SByte>(element) = As<SByte>(RoundInt(Float(c.x)));
break;
case FORMAT_A8B8G8R8UI:
*Pointer<Byte>(element + 3) = As<Byte>(UInt(Float(c.w) + Float(0.5f)));
case FORMAT_X8B8G8R8UI:
if(format == FORMAT_X8B8G8R8UI)
{
*Pointer<Byte>(element + 3) = Byte(0xFF);
}
*Pointer<Byte>(element + 2) = As<Byte>(UInt(Float(c.z) + Float(0.5f)));
case FORMAT_G8R8UI:
case FORMAT_G8R8:
*Pointer<Byte>(element + 1) = As<Byte>(UInt(Float(c.y) + Float(0.5f)));
case FORMAT_R8UI:
case FORMAT_R8:
*Pointer<Byte>(element) = As<Byte>(UInt(Float(c.x) + Float(0.5f)));
break;
case FORMAT_A16B16G16R16I:
*Pointer<Short4>(element) = Short4(RoundInt(c));
break;
case FORMAT_X16B16G16R16I:
*Pointer<Short4>(element) = Short4(RoundInt(c));
*Pointer<Short>(element + 6) = Short(0x7F);
break;
case FORMAT_G16R16I:
*Pointer<UInt>(element) = UInt(As<Long>(Short4(RoundInt(c))));
break;
case FORMAT_R16I:
*Pointer<Short>(element) = As<Short>(RoundInt(Float(c.x)));
break;
case FORMAT_A16B16G16R16UI:
case FORMAT_A16B16G16R16:
*Pointer<UShort4>(element) = UShort4(RoundInt(c));
break;
case FORMAT_X16B16G16R16UI:
*Pointer<UShort4>(element) = UShort4(RoundInt(c));
*Pointer<UShort>(element + 6) = UShort(0xFF);
break;
case FORMAT_G16R16UI:
case FORMAT_G16R16:
*Pointer<UInt>(element) = UInt(As<Long>(UShort4(RoundInt(c))));
case FORMAT_R16UI:
*Pointer<UShort>(element) = As<UShort>(UInt(Float(c.x) + Float(0.5f)));
break;
case FORMAT_A32B32G32R32I:
*Pointer<Int4>(element) = RoundInt(c);
break;
case FORMAT_X32B32G32R32I:
*Pointer<Int4>(element) = RoundInt(c);
*Pointer<Int>(element + 12) = Int(0x7FFFFFFF);
break;
case FORMAT_G32R32I:
*Pointer<Int>(element + 4) = RoundInt(Float(c.y));
case FORMAT_R32I:
*Pointer<Int>(element) = RoundInt(Float(c.x));
break;
case FORMAT_A32B32G32R32UI:
*Pointer<UInt4>(element) = UInt4(c + Float4(0.5f));
break;
case FORMAT_X32B32G32R32UI:
*Pointer<UInt4>(element) = UInt4(c + Float4(0.5f));
*Pointer<UInt4>(element + 12) = UInt4(0xFFFFFFFF);
break;
case FORMAT_G32R32UI:
*Pointer<UInt>(element + 4) = UInt(Float(c.y) + Float(0.5f));
case FORMAT_R32UI:
*Pointer<UInt>(element) = UInt(Float(c.x) + Float(0.5f));
break;
default:
return false;
}
return true;
}
bool Blitter::read(Int4 &c, Pointer<Byte> element, Format format)
{
c = Int4(0);
switch(format)
{
case FORMAT_A8B8G8R8I:
Insert(c, Int(*Pointer<SByte>(element + 3)), 3);
case FORMAT_X8B8G8R8I:
Insert(c, Int(*Pointer<SByte>(element + 2)), 2);
case FORMAT_G8R8I:
Insert(c, Int(*Pointer<SByte>(element + 1)), 1);
case FORMAT_R8I:
Insert(c, Int(*Pointer<SByte>(element)), 0);
if(format != FORMAT_A8B8G8R8I)
{
Insert(c, Int(0x7F), 3); // Set alpha
}
break;
case FORMAT_A8B8G8R8UI:
Insert(c, Int(*Pointer<Byte>(element + 3)), 3);
case FORMAT_X8B8G8R8UI:
Insert(c, Int(*Pointer<Byte>(element + 2)), 2);
case FORMAT_G8R8UI:
Insert(c, Int(*Pointer<Byte>(element + 1)), 1);
case FORMAT_R8UI:
Insert(c, Int(*Pointer<Byte>(element)), 0);
if(format != FORMAT_A8B8G8R8UI)
{
Insert(c, Int(0xFF), 3); // Set alpha
}
break;
case FORMAT_A16B16G16R16I:
Insert(c, Int(*Pointer<Short>(element + 3)), 3);
case FORMAT_X16B16G16R16I:
Insert(c, Int(*Pointer<Short>(element + 2)), 2);
case FORMAT_G16R16I:
Insert(c, Int(*Pointer<Short>(element + 1)), 1);
case FORMAT_R16I:
Insert(c, Int(*Pointer<Short>(element)), 0);
if(format != FORMAT_A16B16G16R16I)
{
Insert(c, Int(0x7FFF), 3); // Set alpha
}
break;
case FORMAT_A16B16G16R16UI:
Insert(c, Int(*Pointer<UShort>(element + 3)), 3);
case FORMAT_X16B16G16R16UI:
Insert(c, Int(*Pointer<UShort>(element + 2)), 2);
case FORMAT_G16R16UI:
Insert(c, Int(*Pointer<UShort>(element + 1)), 1);
case FORMAT_R16UI:
Insert(c, Int(*Pointer<UShort>(element)), 0);
if(format != FORMAT_A16B16G16R16UI)
{
Insert(c, Int(0xFFFF), 3); // Set alpha
}
break;
case FORMAT_A32B32G32R32I:
Insert(c, Int(*Pointer<Int>(element + 3)), 3);
case FORMAT_X32B32G32R32I:
Insert(c, Int(*Pointer<Int>(element + 2)), 2);
case FORMAT_G32R32I:
Insert(c, Int(*Pointer<Int>(element + 1)), 1);
case FORMAT_R32I:
Insert(c, Int(*Pointer<Int>(element)), 0);
if(format != FORMAT_A32B32G32R32I)
{
Insert(c, Int(0x7FFFFFFF), 3); // Set alpha
}
break;
case FORMAT_A32B32G32R32UI:
Insert(c, Int(*Pointer<UInt>(element + 3)), 3);
case FORMAT_X32B32G32R32UI:
Insert(c, Int(*Pointer<UInt>(element + 2)), 2);
case FORMAT_G32R32UI:
Insert(c, Int(*Pointer<UInt>(element + 1)), 1);
case FORMAT_R32UI:
Insert(c, Int(*Pointer<UInt>(element)), 0);
if(format != FORMAT_A32B32G32R32UI)
{
Insert(c, Int(UInt(0xFFFFFFFFU)), 3); // Set alpha
}
break;
default:
return false;
}
return true;
}
bool Blitter::write(Int4 &c, Pointer<Byte> element, Format format)
{
switch(format)
{
case FORMAT_A8B8G8R8I:
*Pointer<SByte>(element + 3) = As<SByte>(Extract(c, 3));
case FORMAT_X8B8G8R8I:
*Pointer<SByte>(element + 2) = As<SByte>(Extract(c, 2));
case FORMAT_G8R8I:
*Pointer<SByte>(element + 1) = As<SByte>(Extract(c, 1));
case FORMAT_R8I:
*Pointer<SByte>(element) = As<SByte>(Extract(c, 0));
if(format != FORMAT_A8B8G8R8I)
{
*Pointer<SByte>(element + 3) = SByte(0x7F);
}
break;
case FORMAT_A8B8G8R8UI:
*Pointer<Byte>(element + 3) = As<Byte>(Extract(c, 3));
case FORMAT_X8B8G8R8UI:
*Pointer<Byte>(element + 2) = As<Byte>(Extract(c, 2));
case FORMAT_G8R8UI:
*Pointer<Byte>(element + 1) = As<Byte>(Extract(c, 1));
case FORMAT_R8UI:
*Pointer<Byte>(element) = As<Byte>(Extract(c, 0));
if(format != FORMAT_A8B8G8R8UI)
{
*Pointer<Byte>(element + 3) = Byte(0xFF);
}
break;
case FORMAT_A16B16G16R16I:
*Pointer<Short>(element + 3) = As<Short>(Extract(c, 3));
case FORMAT_X16B16G16R16I:
*Pointer<Short>(element + 2) = As<Short>(Extract(c, 2));
case FORMAT_G16R16I:
*Pointer<Short>(element + 1) = As<Short>(Extract(c, 1));
case FORMAT_R16I:
*Pointer<Short>(element) = As<Short>(Extract(c, 0));
if(format != FORMAT_A16B16G16R16I)
{
*Pointer<Short>(element + 3) = Short(0x7FFF);
}
break;
case FORMAT_A16B16G16R16UI:
*Pointer<UShort>(element + 3) = As<UShort>(Extract(c, 3));
case FORMAT_X16B16G16R16UI:
*Pointer<UShort>(element + 2) = As<UShort>(Extract(c, 2));
case FORMAT_G16R16UI:
*Pointer<UShort>(element + 1) = As<UShort>(Extract(c, 1));
case FORMAT_R16UI:
*Pointer<UShort>(element) = As<UShort>(Extract(c, 0));
if(format != FORMAT_A16B16G16R16UI)
{
*Pointer<UShort>(element + 3) = UShort(0xFFFF);
}
break;
case FORMAT_A32B32G32R32I:
*Pointer<Int4>(element) = c;
break;
case FORMAT_X32B32G32R32I:
*Pointer<Int4>(element) = c;
*Pointer<Int>(element + 3) = Int(0x7FFFFFFF);
break;
case FORMAT_G32R32I:
*Pointer<Int2>(element) = As<Int2>(c);
break;
case FORMAT_R32I:
*Pointer<Int>(element) = Extract(c, 0);
break;
case FORMAT_A32B32G32R32UI:
*Pointer<UInt4>(element) = As<UInt4>(c);
break;
case FORMAT_X32B32G32R32UI:
*Pointer<UInt4>(element) = As<UInt4>(c);
*Pointer<UInt>(element + 3) = UInt(0xFFFFFFFF);
break;
case FORMAT_G32R32UI:
*Pointer<UInt2>(element) = As<UInt2>(c);
break;
case FORMAT_R32UI:
*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_X8B8G8R8:
case FORMAT_A8B8G8R8:
scale = vector(0xFF, 0xFF, 0xFF, 0xFF);
break;
case FORMAT_R8I_SNORM:
case FORMAT_G8R8I_SNORM:
case FORMAT_X8B8G8R8I_SNORM:
case FORMAT_A8B8G8R8I_SNORM:
scale = vector(0x7F, 0x7F, 0x7F, 0x7F);
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_A16B16G16R16:
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_G32R32F:
case FORMAT_R32F:
scale = vector(1.0f, 1.0f, 1.0f, 1.0f);
break;
default:
return false;
}
return true;
}
Routine *Blitter::generate(BlitState &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));
Float y = y0;
For(Int j = y0d, j < y1d, j++)
{
Float x = x0;
Pointer<Byte> destLine = dest + j * dPitchB;
For(Int i = x0d, i < x1d, i++)
{
bool intSrc = Surface::isNonNormalizedInteger(state.sourceFormat);
bool intDst = Surface::isNonNormalizedInteger(state.destFormat);
if(intSrc && intDst) // 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
Pointer<Byte> s = source + Int(y) * sPitchB + Int(x) * Surface::bytes(state.sourceFormat);
if(!read(color, s, state.sourceFormat))
{
return nullptr;
}
Pointer<Byte> d = destLine + i * Surface::bytes(state.destFormat);
if(!write(color, d, state.destFormat))
{
return nullptr;
}
}
else
{
Float4 color;
if(!state.filter || intSrc)
{
Int X = Int(x);
Int Y = Int(y);
Pointer<Byte> s = source + Y * sPitchB + X * Surface::bytes(state.sourceFormat);
if(!read(color, s, state.sourceFormat))
{
return nullptr;
}
}
else // Bilinear filtering
{
Float x0 = x - 0.5f;
Float y0 = y - 0.5f;
Int X0 = Max(Int(x0), 0);
Int Y0 = Max(Int(y0), 0);
Int X1 = IfThenElse(X0 + 1 >= sWidth, X0, X0 + 1);
Int Y1 = IfThenElse(Y0 + 1 >= sHeight, Y0, Y0 + 1);
Pointer<Byte> s00 = source + Y0 * sPitchB + X0 * Surface::bytes(state.sourceFormat);
Pointer<Byte> s01 = source + Y0 * sPitchB + X1 * Surface::bytes(state.sourceFormat);
Pointer<Byte> s10 = source + Y1 * sPitchB + X0 * Surface::bytes(state.sourceFormat);
Pointer<Byte> s11 = source + Y1 * sPitchB + X1 * Surface::bytes(state.sourceFormat);
Float4 c00; if(!read(c00, s00, state.sourceFormat)) return nullptr;
Float4 c01; if(!read(c01, s01, state.sourceFormat)) return nullptr;
Float4 c10; if(!read(c10, s10, state.sourceFormat)) return nullptr;
Float4 c11; if(!read(c11, s11, state.sourceFormat)) return nullptr;
Float4 fx = Float4(x0 - Float(X0));
Float4 fy = Float4(y0 - Float(Y0));
color = c00 * (Float4(1.0f) - fx) * (Float4(1.0f) - fy) +
c01 * fx * (Float4(1.0f) - fy) +
c10 * (Float4(1.0f) - fx) * fy +
c11 * fx * fy;
}
float4 scale, unscale;
if(!GetScale(unscale, state.sourceFormat) || !GetScale(scale, state.destFormat))
{
return nullptr;
}
if(unscale != scale)
{
color *= Float4(scale.x / unscale.x, scale.y / unscale.y, scale.z / unscale.z, scale.w / unscale.w);
}
if(Surface::isFloatFormat(state.sourceFormat) && !Surface::isFloatFormat(state.destFormat))
{
color = Min(color, Float4(scale.x, scale.y, scale.z, scale.w));
color = Max(color, 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));
}
Pointer<Byte> d = destLine + i * Surface::bytes(state.destFormat);
if(!write(color, d, state.destFormat))
{
return nullptr;
}
}
x += w;
}
y += h;
}
}
return function(L"BlitRoutine");
}
bool Blitter::blitReactor(Surface *source, const SliceRect &sourceRect, Surface *dest, const SliceRect &destRect, bool filter)
{
Rect dRect = destRect;
Rect 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);
}
BlitState state;
bool useSourceInternal = !source->isExternalDirty();
bool useDestInternal = !dest->isExternalDirty();
state.sourceFormat = source->getFormat(useSourceInternal);
state.destFormat = dest->getFormat(useDestInternal);
state.filter = filter;
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;
data.source = source->lock(0, 0, sourceRect.slice, sw::LOCK_READONLY, sw::PUBLIC, useSourceInternal);
data.dest = dest->lock(0, 0, destRect.slice, sw::LOCK_WRITEONLY, sw::PUBLIC, useDestInternal);
data.sPitchB = source->getPitchB(useSourceInternal);
data.dPitchB = dest->getPitchB(useDestInternal);
data.w = 1.0f / (dRect.x1 - dRect.x0) * (sRect.x1 - sRect.x0);
data.h = 1.0f / (dRect.y1 - dRect.y0) * (sRect.y1 - sRect.y0);
data.x0 = (float)sRect.x0 + 0.5f * data.w;
data.y0 = (float)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);
source->unlock(useSourceInternal);
dest->unlock(useDestInternal);
return true;
}
}