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Codegen for all triangle variants

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This commit is contained in:
Magnus Norddahl 2016-11-12 10:21:02 +01:00
parent c852b6c5e9
commit eb4021b997
10 changed files with 319 additions and 83 deletions
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325
src/r_compiler/fixedfunction/drawtrianglecodegen.cpp
View file

@ -233,9 +233,17 @@ void DrawTriangleCodegen::LoopBlockX(TriDrawVariant variant, bool truecolor)
SSAFloat lightscale = SSAFloat::clamp((shade - SSAFloat::MIN(SSAFloat(24.0f), vis)) / 32.0f, SSAFloat(0.0f), SSAFloat(31.0f / 32.0f));
diminishedlight = SSAInt(SSAFloat::clamp((1.0f - lightscale) * 256.0f + 0.5f, SSAFloat(0.0f), SSAFloat(256.0f)), false);
SetStencilBlock(x / 8 + y / 8 * stencilPitch);
SSABool covered = a == SSAInt(0xF) && b == SSAInt(0xF) && c == SSAInt(0xF) && !clipneeded;
if (variant != TriDrawVariant::DrawSubsector)
{
covered = covered && StencilIsSingleValue();
}
// Accept whole block when totally covered
SSAIfBlock branch_covered;
branch_covered.if_block(a == SSAInt(0xF) && b == SSAInt(0xF) && c == SSAInt(0xF) && !clipneeded);
branch_covered.if_block(covered);
{
LoopFullBlock(variant, truecolor);
}
@ -254,58 +262,86 @@ void DrawTriangleCodegen::LoopBlockX(TriDrawVariant variant, bool truecolor)
void DrawTriangleCodegen::LoopFullBlock(TriDrawVariant variant, bool truecolor)
{
int pixelsize = truecolor ? 4 : 1;
stack_iy.store(SSAInt(0));
stack_buffer.store(dest);
stack_subsectorbuffer.store(subsectorGBuffer);
SSAForBlock loopy;
SSAInt iy = stack_iy.load();
SSAUBytePtr buffer = stack_buffer.load();
SSAIntPtr subsectorbuffer = stack_subsectorbuffer.load();
loopy.loop_block(iy < SSAInt(q), q);
SSAIfBlock branch_stenciltest;
if (variant != TriDrawVariant::DrawSubsector)
{
SSAInt varyingStep[TriVertex::NumVarying];
for (int i = 0; i < TriVertex::NumVarying; i++)
{
SSAFloat pos = varyingTL[i] + varyingBL[i] * SSAFloat(iy);
SSAFloat step = (varyingTR[i] + varyingBR[i] * SSAFloat(iy) - pos) * (1.0f / q);
stack_varying[i].store(SSAInt((pos - SSAFloat::floor(pos)) * SSAFloat((float)0x100000000LL), true));
varyingStep[i] = SSAInt(step * SSAFloat((float)0x100000000LL), true);
}
stack_ix.store(x);
SSAForBlock loopx;
SSAInt ix = stack_ix.load();
SSAInt varying[TriVertex::NumVarying];
for (int i = 0; i < TriVertex::NumVarying; i++)
varying[i] = stack_varying[i].load();
loopx.loop_block(ix < x + q, q);
{
SSAIfBlock branch;
branch.if_block(subsectorbuffer[ix].load(true) >= subsectorDepth);
{
if (truecolor)
ProcessPixel(buffer[ix * 4], subsectorbuffer[ix], varying, variant, truecolor);
else
ProcessPixel(buffer[ix], subsectorbuffer[ix], varying, variant, truecolor);
}
branch.end_block();
for (int i = 0; i < TriVertex::NumVarying; i++)
stack_varying[i].store(varying[i] + varyingStep[i]);
stack_ix.store(ix + 1);
}
loopx.end_block();
stack_buffer.store(buffer[pitch * pixelsize]);
stack_subsectorbuffer.store(subsectorbuffer[pitch]);
stack_iy.store(iy + 1);
branch_stenciltest.if_block(StencilGetSingle() == stencilTestValue);
}
if (variant == TriDrawVariant::Stencil)
{
StencilClear(stencilWriteValue);
}
else
{
int pixelsize = truecolor ? 4 : 1;
stack_iy.store(SSAInt(0));
stack_buffer.store(dest);
stack_subsectorbuffer.store(subsectorGBuffer);
SSAForBlock loopy;
SSAInt iy = stack_iy.load();
SSAUBytePtr buffer = stack_buffer.load();
SSAIntPtr subsectorbuffer = stack_subsectorbuffer.load();
loopy.loop_block(iy < SSAInt(q), q);
{
SSAInt varyingStep[TriVertex::NumVarying];
for (int i = 0; i < TriVertex::NumVarying; i++)
{
SSAFloat pos = varyingTL[i] + varyingBL[i] * SSAFloat(iy);
SSAFloat step = (varyingTR[i] + varyingBR[i] * SSAFloat(iy) - pos) * (1.0f / q);
stack_varying[i].store(SSAInt((pos - SSAFloat::floor(pos)) * SSAFloat((float)0x100000000LL), true));
varyingStep[i] = SSAInt(step * SSAFloat((float)0x100000000LL), true);
}
stack_ix.store(x);
SSAForBlock loopx;
SSAInt ix = stack_ix.load();
SSAInt varying[TriVertex::NumVarying];
for (int i = 0; i < TriVertex::NumVarying; i++)
varying[i] = stack_varying[i].load();
loopx.loop_block(ix < x + q, q);
{
if (variant == TriDrawVariant::DrawSubsector)
{
SSAIfBlock branch;
branch.if_block(subsectorbuffer[ix].load(true) >= subsectorDepth);
{
if (truecolor)
ProcessPixel(buffer[ix * 4], subsectorbuffer[ix], varying, variant, truecolor);
else
ProcessPixel(buffer[ix], subsectorbuffer[ix], varying, variant, truecolor);
}
branch.end_block();
}
else
{
if (truecolor)
ProcessPixel(buffer[ix * 4], subsectorbuffer[ix], varying, variant, truecolor);
else
ProcessPixel(buffer[ix], subsectorbuffer[ix], varying, variant, truecolor);
}
for (int i = 0; i < TriVertex::NumVarying; i++)
stack_varying[i].store(varying[i] + varyingStep[i]);
stack_ix.store(ix + 1);
}
loopx.end_block();
stack_buffer.store(buffer[pitch * pixelsize]);
stack_subsectorbuffer.store(subsectorbuffer[pitch]);
stack_iy.store(iy + 1);
}
loopy.end_block();
}
if (variant != TriDrawVariant::DrawSubsector)
{
branch_stenciltest.end_block();
}
loopy.end_block();
}
void DrawTriangleCodegen::LoopPartialBlock(TriDrawVariant variant, bool truecolor)
@ -354,14 +390,31 @@ void DrawTriangleCodegen::LoopPartialBlock(TriDrawVariant variant, bool truecolo
loopx.loop_block(ix < SSAInt(q), q);
{
SSABool visible = (ix + x >= clipleft) && (ix + x < clipright) && (cliptop <= y + iy) && (clipbottom > y + iy);
SSABool covered = CX1 > SSAInt(0) && CX2 > SSAInt(0) && CX3 > SSAInt(0) && visible;
if (variant == TriDrawVariant::DrawSubsector)
{
covered = covered && subsectorbuffer[ix + x].load(true) >= subsectorDepth;
}
else
{
covered = covered && StencilGet(ix, iy) == stencilTestValue;
}
SSAIfBlock branch;
branch.if_block(CX1 > SSAInt(0) && CX2 > SSAInt(0) && CX3 > SSAInt(0) && visible && subsectorbuffer[ix + x].load(true) >= subsectorDepth);
branch.if_block(covered);
{
if (truecolor)
ProcessPixel(buffer[(ix + x) * 4], subsectorbuffer[ix + x], varying, variant, truecolor);
if (variant == TriDrawVariant::Stencil)
{
StencilSet(ix, iy, stencilWriteValue);
}
else
ProcessPixel(buffer[ix + x], subsectorbuffer[ix + x], varying, variant, truecolor);
{
if (truecolor)
ProcessPixel(buffer[(ix + x) * 4], subsectorbuffer[ix + x], varying, variant, truecolor);
else
ProcessPixel(buffer[ix + x], subsectorbuffer[ix + x], varying, variant, truecolor);
}
}
branch.end_block();
@ -387,39 +440,157 @@ void DrawTriangleCodegen::LoopPartialBlock(TriDrawVariant variant, bool truecolo
void DrawTriangleCodegen::ProcessPixel(SSAUBytePtr buffer, SSAIntPtr subsectorbuffer, SSAInt *varying, TriDrawVariant variant, bool truecolor)
{
SSAInt ufrac = varying[0];
SSAInt vfrac = varying[1];
SSAInt upos = ((ufrac >> 16) * textureWidth) >> 16;
SSAInt vpos = ((vfrac >> 16) * textureHeight) >> 16;
SSAInt uvoffset = upos * textureHeight + vpos;
if (truecolor)
if (variant == TriDrawVariant::Fill)
{
SSAVec4i fg = texturePixels[uvoffset * 4].load_vec4ub(true);
SSAInt fg_alpha = fg[3];
fg = (fg * diminishedlight) >> 8;
fg.insert(3, fg_alpha);
SSAIfBlock branch_transparency;
branch_transparency.if_block(fg_alpha > SSAInt(127));
if (truecolor)
{
buffer.store_vec4ub(fg);
buffer.store_vec4ub(SSAVec4i::unpack(solidcolor));
}
branch_transparency.end_block();
else
{
//buffer.store(solidcolor);
}
subsectorbuffer.store(subsectorDepth);
}
else
{
SSAUByte palindex = texturePixels[uvoffset].load(true);
SSAIfBlock branch_transparency;
branch_transparency.if_block(!(palindex.zext_int() == SSAInt(0)));
SSAInt ufrac = varying[0];
SSAInt vfrac = varying[1];
SSAInt upos = ((ufrac >> 16) * textureWidth) >> 16;
SSAInt vpos = ((vfrac >> 16) * textureHeight) >> 16;
SSAInt uvoffset = upos * textureHeight + vpos;
if (truecolor)
{
buffer.store(palindex);
SSAVec4i fg = texturePixels[uvoffset * 4].load_vec4ub(true);
SSAInt fg_alpha = fg[3];
fg = (fg * diminishedlight) >> 8;
fg.insert(3, fg_alpha);
if (variant == TriDrawVariant::DrawMasked || variant == TriDrawVariant::DrawSubsector)
{
SSAIfBlock branch_transparency;
branch_transparency.if_block(fg_alpha > SSAInt(127));
{
buffer.store_vec4ub(fg);
if (variant != TriDrawVariant::DrawSubsector)
subsectorbuffer.store(subsectorDepth);
}
branch_transparency.end_block();
}
else
{
buffer.store_vec4ub(fg);
subsectorbuffer.store(subsectorDepth);
}
}
else
{
SSAUByte palindex = texturePixels[uvoffset].load(true);
if (variant == TriDrawVariant::DrawMasked || variant == TriDrawVariant::DrawSubsector)
{
SSAIfBlock branch_transparency;
branch_transparency.if_block(!(palindex.zext_int() == SSAInt(0)));
{
buffer.store(palindex);
if (variant != TriDrawVariant::DrawSubsector)
subsectorbuffer.store(subsectorDepth);
}
branch_transparency.end_block();
}
else
{
buffer.store(palindex);
subsectorbuffer.store(subsectorDepth);
}
}
branch_transparency.end_block();
}
}
void DrawTriangleCodegen::SetStencilBlock(SSAInt block)
{
StencilBlock = stencilValues[block * 64];
StencilBlockMask = stencilMasks[block];
}
void DrawTriangleCodegen::StencilSet(SSAInt x, SSAInt y, SSAUByte value)
{
SSAInt mask = StencilBlockMask.load(false);
SSAIfBlock branchNeedsUpdate;
branchNeedsUpdate.if_block(!(mask == SSAInt(0xffffffff) && StencilBlock[0].load(false) == value));
SSAIfBlock branchFirstSet;
branchFirstSet.if_block(mask == SSAInt(0xffffffff));
{
SSAUByte val0 = StencilBlock[0].load(false);
for (int i = 1; i < 8 * 8; i++)
StencilBlock[i].store(val0);
}
branchFirstSet.end_block();
SSAIfBlock branchNeedsUpdate2;
branchNeedsUpdate2.if_block(!(StencilBlock[x + y * 8].load(false) == value));
StencilBlock[x + y * 8].store(value);
SSAInt leveloffset = SSAInt(0);
for (int i = 1; i < 4; i++)
{
x = x >> 1;
y = y >> 1;
SSABool differs =
!(StencilBlock[(x << i) + (y << i) * 8].load(false) == value &&
StencilBlock[((x + 1) << i) + (y << i) * 8].load(false) == value &&
StencilBlock[(x << i) + ((y + 1) << i) * 8].load(false) == value &&
StencilBlock[((x + 1) << i) + ((y + 1) << i) * 8].load(false) == value);
SSAInt levelbit = SSAInt(1) << (leveloffset + x + y * (8 >> i));
mask = differs.select(mask & ~levelbit, mask | levelbit);
leveloffset = leveloffset + (SSAInt(8) >> leveloffset) * (SSAInt(8) >> leveloffset);
}
SSABool differs =
!(StencilBlock[0].load(false) == value &&
StencilBlock[4].load(false) == value &&
StencilBlock[4 * 8].load(false) == value &&
StencilBlock[4 * 8 + 4].load(false) == value);
mask = differs.select(mask & ~(1 << 22), mask | (1 << 22));
StencilBlockMask.store(mask);
branchNeedsUpdate2.end_block();
branchNeedsUpdate.end_block();
}
SSAUByte DrawTriangleCodegen::StencilGet(SSAInt x, SSAInt y)
{
SSABool oneValueBlock = StencilBlockMask.load(false) == SSAInt(0xffffffff);
return oneValueBlock.select(StencilBlock[0].load(false), StencilBlock[x + y * 8].load(false));
}
SSAUByte DrawTriangleCodegen::StencilGetSingle()
{
return StencilBlock[0].load(false);
}
void DrawTriangleCodegen::StencilClear(SSAUByte value)
{
StencilBlock[0].store(value);
StencilBlockMask.store(SSAInt(0xffffffff));
}
SSABool DrawTriangleCodegen::StencilIsSingleValue()
{
return StencilBlockMask.load(false) == SSAInt(0xffffffff);
}
void DrawTriangleCodegen::LoadArgs(TriDrawVariant variant, bool truecolor, SSAValue args, SSAValue thread_data)
{
dest = args[0][0].load(true);

10
src/r_compiler/fixedfunction/drawtrianglecodegen.h
View file

@ -47,6 +47,13 @@ private:
void ProcessPixel(SSAUBytePtr buffer, SSAIntPtr subsectorbuffer, SSAInt *varying, TriDrawVariant variant, bool truecolor);
void SetStencilBlock(SSAInt block);
void StencilSet(SSAInt x, SSAInt y, SSAUByte value);
void StencilClear(SSAUByte value);
SSAUByte StencilGet(SSAInt x, SSAInt y);
SSAUByte StencilGetSingle();
SSABool StencilIsSingleValue();
SSAFloat gradx(SSAFloat x0, SSAFloat y0, SSAFloat x1, SSAFloat y1, SSAFloat x2, SSAFloat y2, SSAFloat c0, SSAFloat c1, SSAFloat c2);
SSAFloat grady(SSAFloat x0, SSAFloat y0, SSAFloat x1, SSAFloat y1, SSAFloat x2, SSAFloat y2, SSAFloat c0, SSAFloat c1, SSAFloat c2);
@ -112,4 +119,7 @@ private:
SSAFloat varyingTR[TriVertex::NumVarying];
SSAFloat varyingBL[TriVertex::NumVarying];
SSAFloat varyingBR[TriVertex::NumVarying];
SSAUBytePtr StencilBlock;
SSAIntPtr StencilBlockMask;
};

1
src/r_compiler/llvmdrawers.h
View file

@ -263,6 +263,7 @@ struct TriDrawTriangleArgs
enum class TriDrawVariant
{
Draw,
DrawMasked,
Fill,
DrawSubsector,
Stencil,

39
src/r_compiler/ssa/ssa_bool.cpp
View file

@ -22,6 +22,8 @@
#include "r_compiler/llvm_include.h"
#include "ssa_bool.h"
#include "ssa_ubyte.h"
#include "ssa_value.h"
#include "ssa_scope.h"
SSABool::SSABool()
@ -49,6 +51,16 @@ SSAInt SSABool::zext_int()
return SSAInt::from_llvm(SSAScope::builder().CreateZExt(v, SSAInt::llvm_type(), SSAScope::hint()));
}
SSAInt SSABool::select(SSAInt a, SSAInt b)
{
return SSAValue::from_llvm(SSAScope::builder().CreateSelect(v, a.v, b.v, SSAScope::hint()));
}
SSAUByte SSABool::select(SSAUByte a, SSAUByte b)
{
return SSAValue::from_llvm(SSAScope::builder().CreateSelect(v, a.v, b.v, SSAScope::hint()));
}
SSABool operator&&(const SSABool &a, const SSABool &b)
{
return SSABool::from_llvm(SSAScope::builder().CreateAnd(a.v, b.v, SSAScope::hint()));
@ -91,6 +103,33 @@ SSABool operator>(const SSAInt &a, const SSAInt &b)
/////////////////////////////////////////////////////////////////////////////
SSABool operator<(const SSAUByte &a, const SSAUByte &b)
{
return SSABool::from_llvm(SSAScope::builder().CreateICmpSLT(a.v, b.v, SSAScope::hint()));
}
SSABool operator<=(const SSAUByte &a, const SSAUByte &b)
{
return SSABool::from_llvm(SSAScope::builder().CreateICmpSLE(a.v, b.v, SSAScope::hint()));
}
SSABool operator==(const SSAUByte &a, const SSAUByte &b)
{
return SSABool::from_llvm(SSAScope::builder().CreateICmpEQ(a.v, b.v, SSAScope::hint()));
}
SSABool operator>=(const SSAUByte &a, const SSAUByte &b)
{
return SSABool::from_llvm(SSAScope::builder().CreateICmpSGE(a.v, b.v, SSAScope::hint()));
}
SSABool operator>(const SSAUByte &a, const SSAUByte &b)
{
return SSABool::from_llvm(SSAScope::builder().CreateICmpSGT(a.v, b.v, SSAScope::hint()));
}
/////////////////////////////////////////////////////////////////////////////
SSABool operator<(const SSAFloat &a, const SSAFloat &b)
{
return SSABool::from_llvm(SSAScope::builder().CreateFCmpOLT(a.v, b.v, SSAScope::hint()));

9
src/r_compiler/ssa/ssa_bool.h
View file

@ -23,6 +23,7 @@
#pragma once
#include "ssa_int.h"
#include "ssa_ubyte.h"
#include "ssa_float.h"
namespace llvm { class Value; }
@ -38,6 +39,8 @@ public:
static llvm::Type *llvm_type();
SSAInt zext_int();
SSAInt select(SSAInt a, SSAInt b);
SSAUByte select(SSAUByte a, SSAUByte b);
llvm::Value *v;
};
@ -53,6 +56,12 @@ SSABool operator==(const SSAInt &a, const SSAInt &b);
SSABool operator>=(const SSAInt &a, const SSAInt &b);
SSABool operator>(const SSAInt &a, const SSAInt &b);
SSABool operator<(const SSAUByte &a, const SSAUByte &b);
SSABool operator<=(const SSAUByte &a, const SSAUByte &b);
SSABool operator==(const SSAUByte &a, const SSAUByte &b);
SSABool operator>=(const SSAUByte &a, const SSAUByte &b);
SSABool operator>(const SSAUByte &a, const SSAUByte &b);
SSABool operator<(const SSAFloat &a, const SSAFloat &b);
SSABool operator<=(const SSAFloat &a, const SSAFloat &b);
SSABool operator==(const SSAFloat &a, const SSAFloat &b);

5
src/r_compiler/ssa/ssa_int.cpp
View file

@ -195,3 +195,8 @@ SSAInt operator|(const SSAInt &a, const SSAInt &b)
{
return SSAInt::from_llvm(SSAScope::builder().CreateOr(a.v, b.v, SSAScope::hint()));
}
SSAInt operator~(const SSAInt &a)
{
return SSAInt::from_llvm(SSAScope::builder().CreateNot(a.v, SSAScope::hint()));
}

1
src/r_compiler/ssa/ssa_int.h
View file

@ -74,3 +74,4 @@ SSAInt operator&(const SSAInt &a, int b);
SSAInt operator&(const SSAInt &a, const SSAInt &b);
SSAInt operator|(const SSAInt &a, int b);
SSAInt operator|(const SSAInt &a, const SSAInt &b);
SSAInt operator~(const SSAInt &a);

2
src/r_poly.cpp
View file

@ -1524,7 +1524,7 @@ void PolySkyDome::SkyVertex(int r, int c, bool zflip)
// And finally the vertex.
TriVertex vert;
vert = SetVertexXYZ(-pos.X, z - 1.f, pos.Y, u * 4.0f, v + 0.5f/*, color*/);
vert = SetVertexXYZ(-pos.X, z - 1.f, pos.Y, u * 4.0f, v * 1.2f + 0.5f/*, color*/);
mVertices.Push(vert);
}

6
src/r_poly_triangle.cpp
View file

@ -58,10 +58,10 @@ void PolyTriangleDrawer::draw_arrays(const PolyDrawArgs &drawargs, TriDrawVarian
switch (variant)
{
default:
case TriDrawVariant::Draw: drawfunc = r_swtruecolor ? ScreenPolyTriangleDrawer::draw32 : ScreenPolyTriangleDrawer::draw; break;
case TriDrawVariant::Fill: drawfunc = r_swtruecolor ? ScreenPolyTriangleDrawer::fill32 : ScreenPolyTriangleDrawer::fill; break;
case TriDrawVariant::Draw: drawfunc = r_swtruecolor ? llvm->TriDraw32: llvm->TriDraw8; break;
case TriDrawVariant::Fill: drawfunc = r_swtruecolor ? llvm->TriFill32 : llvm->TriFill8; break;
case TriDrawVariant::DrawSubsector: drawfunc = r_swtruecolor ? llvm->TriDrawSubsector32 : llvm->TriDrawSubsector8; break;
case TriDrawVariant::Stencil: drawfunc = ScreenPolyTriangleDrawer::stencil; break;
case TriDrawVariant::Stencil: drawfunc = ScreenPolyTriangleDrawer::stencil/*llvm->TriStencil*/; break;
}
TriDrawTriangleArgs args;

4
src/r_poly_triangle.h
View file

@ -105,7 +105,7 @@ public:
x >>= 1;
y >>= 1;
bool same =
bool differs =
Values[(x << i) + (y << i) * 8] != value ||
Values[((x + 1) << i) + (y << i) * 8] != value ||
Values[(x << i) + ((y + 1) << i) * 8] != value ||
@ -113,7 +113,7 @@ public:
int levelbit = 1 << (leveloffset + x + y * (8 >> i));
if (same)
if (differs)
ValueMask = ValueMask & ~levelbit;
else
ValueMask = ValueMask | levelbit;