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Add DXIL Debugger Support for Quad Operations

Browse Source 
HLSL
QuadReadLaneAt()
QuadReadAcrossDiagonal()
QuadReadAcrossX()
QuadReadAcrossY()

DXIL
DXOp::QuadReadLaneAt
DXOp::QuadOp
This commit is contained in:
Jake Turner
2025-04-06 14:37:15 +01:00
parent 038aee2459
commit fa22effc77
1 changed files with 52 additions and 33 deletions
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renderdoc/driver/shaders/dxil/dxil_debug.cpp
+52 -33
View File
@@ -3761,52 +3761,71 @@ bool ThreadState::ExecuteInstruction(DebugAPIWrapper *apiWrapper,
// QuadReadLaneAt(value,quadLane)
ShaderVariable b;
RDCASSERT(GetShaderVariable(inst.args[2], opCode, dxOpCode, b));
uint32_t lane = UINT32_MAX;
uint32_t lane = ~0U;
if(dxOpCode == DXOp::QuadOp)
{
QuadOpKind quadOp = (QuadOpKind)b.value.u32v[0];
switch(quadOp)
if(m_QuadLaneIndex == ~0U)
{
case QuadOpKind::ReadAcrossX:
RDCERR("Quad operation without proper quad neighbours");
lane = m_WorkgroupIndex;
}
else
{
QuadOpKind quadOp = (QuadOpKind)b.value.u32v[0];
switch(quadOp)
{
// 0->1
// 1->0
// 2->3
// 3->2
if(m_WorkgroupIndex % 2 == 0)
lane = m_WorkgroupIndex + 1;
else
lane = m_WorkgroupIndex - 1;
break;
case QuadOpKind::ReadAcrossX:
{
// 0->1
// 1->0
// 2->3
// 3->2
lane = m_QuadLaneIndex ^ 1;
break;
}
case QuadOpKind::ReadAcrossY:
{
// 0->2
// 1->3
// 2->0
// 3->1
lane = m_QuadLaneIndex ^ 2;
break;
}
case QuadOpKind::ReadAcrossDiagonal:
{
// 0->3
// 1->2
// 2->1
// 3->0
lane = m_QuadLaneIndex ^ 3;
break;
}
default: RDCERR("Unhandled QuadOpKind %s", ToStr(quadOp).c_str()); break;
}
case QuadOpKind::ReadAcrossY:
if(lane < 4)
lane = m_QuadNeighbours[lane];
if(lane == ~0U)
{
// 0->2
// 1->3
// 2->0
// 3->1
if(m_WorkgroupIndex < 2)
lane = m_WorkgroupIndex + 2;
else
lane = m_WorkgroupIndex - 2;
break;
RDCERR("QuadOp %s without proper quad neighbours", ToStr(quadOp).c_str());
lane = m_WorkgroupIndex;
}
case QuadOpKind::ReadAcrossDiagonal:
{
// 0->3
// 1->2
// 2->1
// 3->0
lane = 3 - m_WorkgroupIndex;
break;
}
default: RDCERR("Unhandled QuadOpKind %s", ToStr(quadOp).c_str()); break;
}
}
else if(dxOpCode == DXOp::QuadReadLaneAt)
{
// QuadReadLaneAt(value,quadLane)
lane = b.value.u32v[0];
RDCASSERT(lane < 4, lane);
lane = RDCMIN(lane, 3U);
lane = m_QuadNeighbours[lane];
if(lane == ~0U)
{
RDCERR("QuadReadLaneAt without proper quad neighbours");
lane = m_WorkgroupIndex;
}
}
else
{