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PixelRoutine.cpp
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PixelRoutine.cpp
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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 "PixelRoutine.hpp"
#include "SamplerCore.hpp"
#include "Constants.hpp"
#include "Renderer/Renderer.hpp"
#include "Renderer/QuadRasterizer.hpp"
#include "Renderer/Surface.hpp"
#include "Renderer/Primitive.hpp"
#include "Common/Debug.hpp"
namespace sw
{
extern bool complementaryDepthBuffer;
extern bool postBlendSRGB;
extern bool exactColorRounding;
extern bool forceClearRegisters;
PixelRoutine::PixelRoutine(const PixelProcessor::State &state, const PixelShader *shader)
: QuadRasterizer(state, shader), v(shader && shader->indirectAddressableInput)
{
if(!shader || shader->getShaderModel() < 0x0200 || forceClearRegisters)
{
for(int i = 0; i < MAX_FRAGMENT_INPUTS; i++)
{
v[i].x = Float4(0.0f);
v[i].y = Float4(0.0f);
v[i].z = Float4(0.0f);
v[i].w = Float4(0.0f);
}
}
}
PixelRoutine::~PixelRoutine()
{
}
void PixelRoutine::quad(Pointer<Byte> cBuffer[RENDERTARGETS], Pointer<Byte> &zBuffer, Pointer<Byte> &sBuffer, Int cMask[4], Int &x)
{
#if PERF_PROFILE
Long pipeTime = Ticks();
#endif
const bool earlyDepthTest = !state.depthOverride && !state.alphaTestActive();
Int zMask[4]; // Depth mask
Int sMask[4]; // Stencil mask
for(unsigned int q = 0; q < state.multiSample; q++)
{
zMask[q] = cMask[q];
sMask[q] = cMask[q];
}
for(unsigned int q = 0; q < state.multiSample; q++)
{
stencilTest(sBuffer, q, x, sMask[q], cMask[q]);
}
Float4 f;
Float4 rhwCentroid;
Float4 xxxx = Float4(Float(x)) + *Pointer<Float4>(primitive + OFFSET(Primitive,xQuad), 16);
if(interpolateZ())
{
for(unsigned int q = 0; q < state.multiSample; q++)
{
Float4 x = xxxx;
if(state.multiSample > 1)
{
x -= *Pointer<Float4>(constants + OFFSET(Constants,X) + q * sizeof(float4));
}
z[q] = interpolate(x, Dz[q], z[q], primitive + OFFSET(Primitive,z), false, false, state.depthClamp);
}
}
Bool depthPass = false;
if(earlyDepthTest)
{
for(unsigned int q = 0; q < state.multiSample; q++)
{
depthPass = depthPass || depthTest(zBuffer, q, x, z[q], sMask[q], zMask[q], cMask[q]);
}
}
If(depthPass || Bool(!earlyDepthTest))
{
#if PERF_PROFILE
Long interpTime = Ticks();
#endif
Float4 yyyy = Float4(Float(y)) + *Pointer<Float4>(primitive + OFFSET(Primitive,yQuad), 16);
// Centroid locations
Float4 XXXX = Float4(0.0f);
Float4 YYYY = Float4(0.0f);
if(state.centroid)
{
Float4 WWWW(1.0e-9f);
for(unsigned int q = 0; q < state.multiSample; q++)
{
XXXX += *Pointer<Float4>(constants + OFFSET(Constants,sampleX[q]) + 16 * cMask[q]);
YYYY += *Pointer<Float4>(constants + OFFSET(Constants,sampleY[q]) + 16 * cMask[q]);
WWWW += *Pointer<Float4>(constants + OFFSET(Constants,weight) + 16 * cMask[q]);
}
WWWW = Rcp_pp(WWWW);
XXXX *= WWWW;
YYYY *= WWWW;
XXXX += xxxx;
YYYY += yyyy;
}
if(interpolateW())
{
w = interpolate(xxxx, Dw, rhw, primitive + OFFSET(Primitive,w), false, false, false);
rhw = reciprocal(w, false, false, true);
if(state.centroid)
{
rhwCentroid = reciprocal(interpolateCentroid(XXXX, YYYY, rhwCentroid, primitive + OFFSET(Primitive,w), false, false));
}
}
for(int interpolant = 0; interpolant < MAX_FRAGMENT_INPUTS; interpolant++)
{
for(int component = 0; component < 4; component++)
{
if(state.interpolant[interpolant].component & (1 << component))
{
if(!state.interpolant[interpolant].centroid)
{
v[interpolant][component] = interpolate(xxxx, Dv[interpolant][component], rhw, primitive + OFFSET(Primitive, V[interpolant][component]), (state.interpolant[interpolant].flat & (1 << component)) != 0, state.perspective, false);
}
else
{
v[interpolant][component] = interpolateCentroid(XXXX, YYYY, rhwCentroid, primitive + OFFSET(Primitive, V[interpolant][component]), (state.interpolant[interpolant].flat & (1 << component)) != 0, state.perspective);
}
}
}
Float4 rcp;
switch(state.interpolant[interpolant].project)
{
case 0:
break;
case 1:
rcp = reciprocal(v[interpolant].y);
v[interpolant].x = v[interpolant].x * rcp;
break;
case 2:
rcp = reciprocal(v[interpolant].z);
v[interpolant].x = v[interpolant].x * rcp;
v[interpolant].y = v[interpolant].y * rcp;
break;
case 3:
rcp = reciprocal(v[interpolant].w);
v[interpolant].x = v[interpolant].x * rcp;
v[interpolant].y = v[interpolant].y * rcp;
v[interpolant].z = v[interpolant].z * rcp;
break;
}
}
if(state.fog.component)
{
f = interpolate(xxxx, Df, rhw, primitive + OFFSET(Primitive,f), state.fog.flat & 0x01, state.perspective, false);
}
setBuiltins(x, y, z, w);
#if PERF_PROFILE
cycles[PERF_INTERP] += Ticks() - interpTime;
#endif
Bool alphaPass = true;
if(colorUsed())
{
#if PERF_PROFILE
Long shaderTime = Ticks();
#endif
applyShader(cMask);
#if PERF_PROFILE
cycles[PERF_SHADER] += Ticks() - shaderTime;
#endif
alphaPass = alphaTest(cMask);
if((shader && shader->containsKill()) || state.alphaTestActive())
{
for(unsigned int q = 0; q < state.multiSample; q++)
{
zMask[q] &= cMask[q];
sMask[q] &= cMask[q];
}
}
}
If(alphaPass)
{
if(!earlyDepthTest)
{
for(unsigned int q = 0; q < state.multiSample; q++)
{
depthPass = depthPass || depthTest(zBuffer, q, x, z[q], sMask[q], zMask[q], cMask[q]);
}
}
#if PERF_PROFILE
Long ropTime = Ticks();
#endif
If(depthPass || Bool(earlyDepthTest))
{
for(unsigned int q = 0; q < state.multiSample; q++)
{
if(state.multiSampleMask & (1 << q))
{
writeDepth(zBuffer, q, x, z[q], zMask[q]);
if(state.occlusionEnabled)
{
occlusion += *Pointer<UInt>(constants + OFFSET(Constants,occlusionCount) + 4 * (zMask[q] & sMask[q]));
}
}
}
if(colorUsed())
{
#if PERF_PROFILE
AddAtomic(Pointer<Long>(&profiler.ropOperations), 4);
#endif
rasterOperation(f, cBuffer, x, sMask, zMask, cMask);
}
}
#if PERF_PROFILE
cycles[PERF_ROP] += Ticks() - ropTime;
#endif
}
}
for(unsigned int q = 0; q < state.multiSample; q++)
{
if(state.multiSampleMask & (1 << q))
{
writeStencil(sBuffer, q, x, sMask[q], zMask[q], cMask[q]);
}
}
#if PERF_PROFILE
cycles[PERF_PIPE] += Ticks() - pipeTime;
#endif
}
Float4 PixelRoutine::interpolateCentroid(Float4 &x, Float4 &y, Float4 &rhw, Pointer<Byte> planeEquation, bool flat, bool perspective)
{
Float4 interpolant = *Pointer<Float4>(planeEquation + OFFSET(PlaneEquation,C), 16);
if(!flat)
{
interpolant += x * *Pointer<Float4>(planeEquation + OFFSET(PlaneEquation,A), 16) +
y * *Pointer<Float4>(planeEquation + OFFSET(PlaneEquation,B), 16);
if(perspective)
{
interpolant *= rhw;
}
}
return interpolant;
}
void PixelRoutine::stencilTest(Pointer<Byte> &sBuffer, int q, Int &x, Int &sMask, Int &cMask)
{
if(!state.stencilActive)
{
return;
}
// (StencilRef & StencilMask) CompFunc (StencilBufferValue & StencilMask)
Pointer<Byte> buffer = sBuffer + 2 * x;
if(q > 0)
{
buffer += q * *Pointer<Int>(data + OFFSET(DrawData,stencilSliceB));
}
Byte8 value = *Pointer<Byte8>(buffer);
Byte8 valueCCW = value;
if(!state.noStencilMask)
{
value &= *Pointer<Byte8>(data + OFFSET(DrawData,stencil[0].testMaskQ));
}
stencilTest(value, state.stencilCompareMode, false);
if(state.twoSidedStencil)
{
if(!state.noStencilMaskCCW)
{
valueCCW &= *Pointer<Byte8>(data + OFFSET(DrawData,stencil[1].testMaskQ));
}
stencilTest(valueCCW, state.stencilCompareModeCCW, true);
value &= *Pointer<Byte8>(primitive + OFFSET(Primitive,clockwiseMask));
valueCCW &= *Pointer<Byte8>(primitive + OFFSET(Primitive,invClockwiseMask));
value |= valueCCW;
}
sMask = SignMask(value) & cMask;
}
void PixelRoutine::stencilTest(Byte8 &value, StencilCompareMode stencilCompareMode, bool CCW)
{
Byte8 equal;
switch(stencilCompareMode)
{
case STENCIL_ALWAYS:
value = Byte8(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
break;
case STENCIL_NEVER:
value = Byte8(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
break;
case STENCIL_LESS: // a < b ~ b > a
value += Byte8(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80);
value = CmpGT(As<SByte8>(value), *Pointer<SByte8>(data + OFFSET(DrawData,stencil[CCW].referenceMaskedSignedQ)));
break;
case STENCIL_EQUAL:
value = CmpEQ(value, *Pointer<Byte8>(data + OFFSET(DrawData,stencil[CCW].referenceMaskedQ)));
break;
case STENCIL_NOTEQUAL: // a != b ~ !(a == b)
value = CmpEQ(value, *Pointer<Byte8>(data + OFFSET(DrawData,stencil[CCW].referenceMaskedQ)));
value ^= Byte8(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
break;
case STENCIL_LESSEQUAL: // a <= b ~ (b > a) || (a == b)
equal = value;
equal = CmpEQ(equal, *Pointer<Byte8>(data + OFFSET(DrawData,stencil[CCW].referenceMaskedQ)));
value += Byte8(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80);
value = CmpGT(As<SByte8>(value), *Pointer<SByte8>(data + OFFSET(DrawData,stencil[CCW].referenceMaskedSignedQ)));
value |= equal;
break;
case STENCIL_GREATER: // a > b
equal = *Pointer<Byte8>(data + OFFSET(DrawData,stencil[CCW].referenceMaskedSignedQ));
value += Byte8(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80);
equal = CmpGT(As<SByte8>(equal), As<SByte8>(value));
value = equal;
break;
case STENCIL_GREATEREQUAL: // a >= b ~ !(a < b) ~ !(b > a)
value += Byte8(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80);
value = CmpGT(As<SByte8>(value), *Pointer<SByte8>(data + OFFSET(DrawData,stencil[CCW].referenceMaskedSignedQ)));
value ^= Byte8(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
break;
default:
ASSERT(false);
}
}
Bool PixelRoutine::depthTest(Pointer<Byte> &zBuffer, int q, Int &x, Float4 &z, Int &sMask, Int &zMask, Int &cMask)
{
if(!state.depthTestActive)
{
return true;
}
Float4 Z = z;
if(shader && shader->depthOverride())
{
if(complementaryDepthBuffer)
{
Z = Float4(1.0f) - oDepth;
}
else
{
Z = oDepth;
}
}
Pointer<Byte> buffer;
Int pitch;
if(!state.quadLayoutDepthBuffer)
{
buffer = zBuffer + 4 * x;
pitch = *Pointer<Int>(data + OFFSET(DrawData,depthPitchB));
}
else
{
buffer = zBuffer + 8 * x;
}
if(q > 0)
{
buffer += q * *Pointer<Int>(data + OFFSET(DrawData,depthSliceB));
}
Float4 zValue;
if(state.depthCompareMode != DEPTH_NEVER || (state.depthCompareMode != DEPTH_ALWAYS && !state.depthWriteEnable))
{
if(!state.quadLayoutDepthBuffer)
{
// FIXME: Properly optimizes?
zValue.xy = *Pointer<Float4>(buffer);
zValue.zw = *Pointer<Float4>(buffer + pitch - 8);
}
else
{
zValue = *Pointer<Float4>(buffer, 16);
}
}
Int4 zTest;
switch(state.depthCompareMode)
{
case DEPTH_ALWAYS:
// Optimized
break;
case DEPTH_NEVER:
// Optimized
break;
case DEPTH_EQUAL:
zTest = CmpEQ(zValue, Z);
break;
case DEPTH_NOTEQUAL:
zTest = CmpNEQ(zValue, Z);
break;
case DEPTH_LESS:
if(complementaryDepthBuffer)
{
zTest = CmpLT(zValue, Z);
}
else
{
zTest = CmpNLE(zValue, Z);
}
break;
case DEPTH_GREATEREQUAL:
if(complementaryDepthBuffer)
{
zTest = CmpNLT(zValue, Z);
}
else
{
zTest = CmpLE(zValue, Z);
}
break;
case DEPTH_LESSEQUAL:
if(complementaryDepthBuffer)
{
zTest = CmpLE(zValue, Z);
}
else
{
zTest = CmpNLT(zValue, Z);
}
break;
case DEPTH_GREATER:
if(complementaryDepthBuffer)
{
zTest = CmpNLE(zValue, Z);
}
else
{
zTest = CmpLT(zValue, Z);
}
break;
default:
ASSERT(false);
}
switch(state.depthCompareMode)
{
case DEPTH_ALWAYS:
zMask = cMask;
break;
case DEPTH_NEVER:
zMask = 0x0;
break;
default:
zMask = SignMask(zTest) & cMask;
break;
}
if(state.stencilActive)
{
zMask &= sMask;
}
return zMask != 0;
}
void PixelRoutine::alphaTest(Int &aMask, Short4 &alpha)
{
Short4 cmp;
Short4 equal;
switch(state.alphaCompareMode)
{
case ALPHA_ALWAYS:
aMask = 0xF;
break;
case ALPHA_NEVER:
aMask = 0x0;
break;
case ALPHA_EQUAL:
cmp = CmpEQ(alpha, *Pointer<Short4>(data + OFFSET(DrawData,factor.alphaReference4)));
aMask = SignMask(PackSigned(cmp, Short4(0x0000)));
break;
case ALPHA_NOTEQUAL: // a != b ~ !(a == b)
cmp = CmpEQ(alpha, *Pointer<Short4>(data + OFFSET(DrawData,factor.alphaReference4))) ^ Short4(0xFFFFu); // FIXME
aMask = SignMask(PackSigned(cmp, Short4(0x0000)));
break;
case ALPHA_LESS: // a < b ~ b > a
cmp = CmpGT(*Pointer<Short4>(data + OFFSET(DrawData,factor.alphaReference4)), alpha);
aMask = SignMask(PackSigned(cmp, Short4(0x0000)));
break;
case ALPHA_GREATEREQUAL: // a >= b ~ (a > b) || (a == b) ~ !(b > a) // TODO: Approximate
equal = CmpEQ(alpha, *Pointer<Short4>(data + OFFSET(DrawData,factor.alphaReference4)));
cmp = CmpGT(alpha, *Pointer<Short4>(data + OFFSET(DrawData,factor.alphaReference4)));
cmp |= equal;
aMask = SignMask(PackSigned(cmp, Short4(0x0000)));
break;
case ALPHA_LESSEQUAL: // a <= b ~ !(a > b)
cmp = CmpGT(alpha, *Pointer<Short4>(data + OFFSET(DrawData,factor.alphaReference4))) ^ Short4(0xFFFFu); // FIXME
aMask = SignMask(PackSigned(cmp, Short4(0x0000)));
break;
case ALPHA_GREATER: // a > b
cmp = CmpGT(alpha, *Pointer<Short4>(data + OFFSET(DrawData,factor.alphaReference4)));
aMask = SignMask(PackSigned(cmp, Short4(0x0000)));
break;
default:
ASSERT(false);
}
}
void PixelRoutine::alphaToCoverage(Int cMask[4], Float4 &alpha)
{
Int4 coverage0 = CmpNLT(alpha, *Pointer<Float4>(data + OFFSET(DrawData,a2c0)));
Int4 coverage1 = CmpNLT(alpha, *Pointer<Float4>(data + OFFSET(DrawData,a2c1)));
Int4 coverage2 = CmpNLT(alpha, *Pointer<Float4>(data + OFFSET(DrawData,a2c2)));
Int4 coverage3 = CmpNLT(alpha, *Pointer<Float4>(data + OFFSET(DrawData,a2c3)));
Int aMask0 = SignMask(coverage0);
Int aMask1 = SignMask(coverage1);
Int aMask2 = SignMask(coverage2);
Int aMask3 = SignMask(coverage3);
cMask[0] &= aMask0;
cMask[1] &= aMask1;
cMask[2] &= aMask2;
cMask[3] &= aMask3;
}
void PixelRoutine::fogBlend(Vector4f &c0, Float4 &fog)
{
if(!state.fogActive)
{
return;
}
if(state.pixelFogMode != FOG_NONE)
{
pixelFog(fog);
fog = Min(fog, Float4(1.0f));
fog = Max(fog, Float4(0.0f));
}
c0.x -= *Pointer<Float4>(data + OFFSET(DrawData,fog.colorF[0]));
c0.y -= *Pointer<Float4>(data + OFFSET(DrawData,fog.colorF[1]));
c0.z -= *Pointer<Float4>(data + OFFSET(DrawData,fog.colorF[2]));
c0.x *= fog;
c0.y *= fog;
c0.z *= fog;
c0.x += *Pointer<Float4>(data + OFFSET(DrawData,fog.colorF[0]));
c0.y += *Pointer<Float4>(data + OFFSET(DrawData,fog.colorF[1]));
c0.z += *Pointer<Float4>(data + OFFSET(DrawData,fog.colorF[2]));
}
void PixelRoutine::pixelFog(Float4 &visibility)
{
Float4 &zw = visibility;
if(state.pixelFogMode != FOG_NONE)
{
if(state.wBasedFog)
{
zw = rhw;
}
else
{
if(complementaryDepthBuffer)
{
zw = Float4(1.0f) - z[0];
}
else
{
zw = z[0];
}
}
}
switch(state.pixelFogMode)
{
case FOG_NONE:
break;
case FOG_LINEAR:
zw *= *Pointer<Float4>(data + OFFSET(DrawData,fog.scale));
zw += *Pointer<Float4>(data + OFFSET(DrawData,fog.offset));
break;
case FOG_EXP:
zw *= *Pointer<Float4>(data + OFFSET(DrawData,fog.densityE));
zw = exponential2(zw, true);
break;
case FOG_EXP2:
zw *= zw;
zw *= *Pointer<Float4>(data + OFFSET(DrawData,fog.density2E));
zw = exponential2(zw, true);
break;
default:
ASSERT(false);
}
}
void PixelRoutine::writeDepth(Pointer<Byte> &zBuffer, int q, Int &x, Float4 &z, Int &zMask)
{
if(!state.depthWriteEnable)
{
return;
}
Float4 Z = z;
if(shader && shader->depthOverride())
{
if(complementaryDepthBuffer)
{
Z = Float4(1.0f) - oDepth;
}
else
{
Z = oDepth;
}
}
Pointer<Byte> buffer;
Int pitch;
if(!state.quadLayoutDepthBuffer)
{
buffer = zBuffer + 4 * x;
pitch = *Pointer<Int>(data + OFFSET(DrawData,depthPitchB));
}
else
{
buffer = zBuffer + 8 * x;
}
if(q > 0)
{
buffer += q * *Pointer<Int>(data + OFFSET(DrawData,depthSliceB));
}
Float4 zValue;
if(state.depthCompareMode != DEPTH_NEVER || (state.depthCompareMode != DEPTH_ALWAYS && !state.depthWriteEnable))
{
if(!state.quadLayoutDepthBuffer)
{
// FIXME: Properly optimizes?
zValue.xy = *Pointer<Float4>(buffer);
zValue.zw = *Pointer<Float4>(buffer + pitch - 8);
}
else
{
zValue = *Pointer<Float4>(buffer, 16);
}
}
Z = As<Float4>(As<Int4>(Z) & *Pointer<Int4>(constants + OFFSET(Constants,maskD4X) + zMask * 16, 16));
zValue = As<Float4>(As<Int4>(zValue) & *Pointer<Int4>(constants + OFFSET(Constants,invMaskD4X) + zMask * 16, 16));
Z = As<Float4>(As<Int4>(Z) | As<Int4>(zValue));
if(!state.quadLayoutDepthBuffer)
{
// FIXME: Properly optimizes?
*Pointer<Float2>(buffer) = Float2(Z.xy);
*Pointer<Float2>(buffer + pitch) = Float2(Z.zw);
}
else
{
*Pointer<Float4>(buffer, 16) = Z;
}
}
void PixelRoutine::writeStencil(Pointer<Byte> &sBuffer, int q, Int &x, Int &sMask, Int &zMask, Int &cMask)
{
if(!state.stencilActive)
{
return;
}
if(state.stencilPassOperation == OPERATION_KEEP && state.stencilZFailOperation == OPERATION_KEEP && state.stencilFailOperation == OPERATION_KEEP)
{
if(!state.twoSidedStencil || (state.stencilPassOperationCCW == OPERATION_KEEP && state.stencilZFailOperationCCW == OPERATION_KEEP && state.stencilFailOperationCCW == OPERATION_KEEP))
{
return;
}
}
if(state.stencilWriteMasked && (!state.twoSidedStencil || state.stencilWriteMaskedCCW))
{
return;
}
Pointer<Byte> buffer = sBuffer + 2 * x;
if(q > 0)
{
buffer += q * *Pointer<Int>(data + OFFSET(DrawData,stencilSliceB));
}
Byte8 bufferValue = *Pointer<Byte8>(buffer);
Byte8 newValue;
stencilOperation(newValue, bufferValue, state.stencilPassOperation, state.stencilZFailOperation, state.stencilFailOperation, false, zMask, sMask);
if(!state.noStencilWriteMask)
{
Byte8 maskedValue = bufferValue;
newValue &= *Pointer<Byte8>(data + OFFSET(DrawData,stencil[0].writeMaskQ));
maskedValue &= *Pointer<Byte8>(data + OFFSET(DrawData,stencil[0].invWriteMaskQ));
newValue |= maskedValue;
}
if(state.twoSidedStencil)
{
Byte8 newValueCCW;
stencilOperation(newValueCCW, bufferValue, state.stencilPassOperationCCW, state.stencilZFailOperationCCW, state.stencilFailOperationCCW, true, zMask, sMask);
if(!state.noStencilWriteMaskCCW)
{
Byte8 maskedValue = bufferValue;
newValueCCW &= *Pointer<Byte8>(data + OFFSET(DrawData,stencil[1].writeMaskQ));
maskedValue &= *Pointer<Byte8>(data + OFFSET(DrawData,stencil[1].invWriteMaskQ));
newValueCCW |= maskedValue;
}
newValue &= *Pointer<Byte8>(primitive + OFFSET(Primitive,clockwiseMask));
newValueCCW &= *Pointer<Byte8>(primitive + OFFSET(Primitive,invClockwiseMask));
newValue |= newValueCCW;
}
newValue &= *Pointer<Byte8>(constants + OFFSET(Constants,maskB4Q) + 8 * cMask);
bufferValue &= *Pointer<Byte8>(constants + OFFSET(Constants,invMaskB4Q) + 8 * cMask);
newValue |= bufferValue;
*Pointer<Byte4>(buffer) = Byte4(newValue);
}
void PixelRoutine::stencilOperation(Byte8 &newValue, Byte8 &bufferValue, StencilOperation stencilPassOperation, StencilOperation stencilZFailOperation, StencilOperation stencilFailOperation, bool CCW, Int &zMask, Int &sMask)
{
Byte8 &pass = newValue;
Byte8 fail;
Byte8 zFail;
stencilOperation(pass, bufferValue, stencilPassOperation, CCW);
if(stencilZFailOperation != stencilPassOperation)
{
stencilOperation(zFail, bufferValue, stencilZFailOperation, CCW);
}
if(stencilFailOperation != stencilPassOperation || stencilFailOperation != stencilZFailOperation)
{
stencilOperation(fail, bufferValue, stencilFailOperation, CCW);
}
if(stencilFailOperation != stencilPassOperation || stencilFailOperation != stencilZFailOperation)
{
if(state.depthTestActive && stencilZFailOperation != stencilPassOperation) // zMask valid and values not the same
{
pass &= *Pointer<Byte8>(constants + OFFSET(Constants,maskB4Q) + 8 * zMask);
zFail &= *Pointer<Byte8>(constants + OFFSET(Constants,invMaskB4Q) + 8 * zMask);
pass |= zFail;
}
pass &= *Pointer<Byte8>(constants + OFFSET(Constants,maskB4Q) + 8 * sMask);
fail &= *Pointer<Byte8>(constants + OFFSET(Constants,invMaskB4Q) + 8 * sMask);
pass |= fail;
}
}
void PixelRoutine::stencilOperation(Byte8 &output, Byte8 &bufferValue, StencilOperation operation, bool CCW)
{
switch(operation)
{
case OPERATION_KEEP:
output = bufferValue;
break;
case OPERATION_ZERO:
output = Byte8(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
break;
case OPERATION_REPLACE:
output = *Pointer<Byte8>(data + OFFSET(DrawData,stencil[CCW].referenceQ));
break;
case OPERATION_INCRSAT:
output = AddSat(bufferValue, Byte8(1, 1, 1, 1, 1, 1, 1, 1));
break;
case OPERATION_DECRSAT:
output = SubSat(bufferValue, Byte8(1, 1, 1, 1, 1, 1, 1, 1));
break;
case OPERATION_INVERT:
output = bufferValue ^ Byte8(0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
break;
case OPERATION_INCR:
output = bufferValue + Byte8(1, 1, 1, 1, 1, 1, 1, 1);
break;
case OPERATION_DECR:
output = bufferValue - Byte8(1, 1, 1, 1, 1, 1, 1, 1);
break;
default:
ASSERT(false);
}
}
void PixelRoutine::blendFactor(Vector4s &blendFactor, const Vector4s ¤t, const Vector4s &pixel, BlendFactor blendFactorActive)
{
switch(blendFactorActive)
{
case BLEND_ZERO:
// Optimized
break;
case BLEND_ONE:
// Optimized
break;
case BLEND_SOURCE:
blendFactor.x = current.x;
blendFactor.y = current.y;
blendFactor.z = current.z;
break;
case BLEND_INVSOURCE:
blendFactor.x = Short4(0xFFFFu) - current.x;
blendFactor.y = Short4(0xFFFFu) - current.y;
blendFactor.z = Short4(0xFFFFu) - current.z;
break;
case BLEND_DEST:
blendFactor.x = pixel.x;
blendFactor.y = pixel.y;
blendFactor.z = pixel.z;
break;
case BLEND_INVDEST:
blendFactor.x = Short4(0xFFFFu) - pixel.x;
blendFactor.y = Short4(0xFFFFu) - pixel.y;
blendFactor.z = Short4(0xFFFFu) - pixel.z;
break;
case BLEND_SOURCEALPHA:
blendFactor.x = current.w;
blendFactor.y = current.w;
blendFactor.z = current.w;
break;
case BLEND_INVSOURCEALPHA:
blendFactor.x = Short4(0xFFFFu) - current.w;
blendFactor.y = Short4(0xFFFFu) - current.w;
blendFactor.z = Short4(0xFFFFu) - current.w;
break;
case BLEND_DESTALPHA:
blendFactor.x = pixel.w;
blendFactor.y = pixel.w;
blendFactor.z = pixel.w;
break;
case BLEND_INVDESTALPHA:
blendFactor.x = Short4(0xFFFFu) - pixel.w;
blendFactor.y = Short4(0xFFFFu) - pixel.w;
blendFactor.z = Short4(0xFFFFu) - pixel.w;
break;
case BLEND_SRCALPHASAT:
blendFactor.x = Short4(0xFFFFu) - pixel.w;
blendFactor.x = Min(As<UShort4>(blendFactor.x), As<UShort4>(current.w));
blendFactor.y = blendFactor.x;
blendFactor.z = blendFactor.x;
break;
case BLEND_CONSTANT:
blendFactor.x = *Pointer<Short4>(data + OFFSET(DrawData,factor.blendConstant4W[0]));
blendFactor.y = *Pointer<Short4>(data + OFFSET(DrawData,factor.blendConstant4W[1]));
blendFactor.z = *Pointer<Short4>(data + OFFSET(DrawData,factor.blendConstant4W[2]));
break;
case BLEND_INVCONSTANT:
blendFactor.x = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[0]));
blendFactor.y = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[1]));
blendFactor.z = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[2]));
break;
case BLEND_CONSTANTALPHA:
blendFactor.x = *Pointer<Short4>(data + OFFSET(DrawData,factor.blendConstant4W[3]));
blendFactor.y = *Pointer<Short4>(data + OFFSET(DrawData,factor.blendConstant4W[3]));
blendFactor.z = *Pointer<Short4>(data + OFFSET(DrawData,factor.blendConstant4W[3]));
break;
case BLEND_INVCONSTANTALPHA:
blendFactor.x = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[3]));
blendFactor.y = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[3]));
blendFactor.z = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[3]));
break;
default:
ASSERT(false);
}
}
void PixelRoutine::blendFactorAlpha(Vector4s &blendFactor, const Vector4s ¤t, const Vector4s &pixel, BlendFactor blendFactorAlphaActive)
{
switch(blendFactorAlphaActive)
{
case BLEND_ZERO:
// Optimized
break;
case BLEND_ONE:
// Optimized
break;
case BLEND_SOURCE:
blendFactor.w = current.w;
break;
case BLEND_INVSOURCE:
blendFactor.w = Short4(0xFFFFu) - current.w;
break;
case BLEND_DEST:
blendFactor.w = pixel.w;
break;
case BLEND_INVDEST:
blendFactor.w = Short4(0xFFFFu) - pixel.w;
break;
case BLEND_SOURCEALPHA:
blendFactor.w = current.w;
break;
case BLEND_INVSOURCEALPHA:
blendFactor.w = Short4(0xFFFFu) - current.w;
break;
case BLEND_DESTALPHA:
blendFactor.w = pixel.w;
break;
case BLEND_INVDESTALPHA:
blendFactor.w = Short4(0xFFFFu) - pixel.w;
break;
case BLEND_SRCALPHASAT:
blendFactor.w = Short4(0xFFFFu);
break;
case BLEND_CONSTANT:
case BLEND_CONSTANTALPHA:
blendFactor.w = *Pointer<Short4>(data + OFFSET(DrawData,factor.blendConstant4W[3]));
break;
case BLEND_INVCONSTANT:
case BLEND_INVCONSTANTALPHA:
blendFactor.w = *Pointer<Short4>(data + OFFSET(DrawData,factor.invBlendConstant4W[3]));
break;
default:
ASSERT(false);
}
}
bool PixelRoutine::isSRGB(int index) const
{
return Surface::isSRGBformat(state.targetFormat[index]);
}
void PixelRoutine::readPixel(int index, Pointer<Byte> &cBuffer, Int &x, Vector4s &pixel)
{
Short4 c01;