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Added OutputGraph to output control flow as a graphvis text file

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This commit is contained in:
Jake Turner
2025-04-02 12:54:56 +01:00
parent 744c9a2899
commit ee4a2c40a9
2 changed files with 37 additions and 0 deletions
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renderdoc/driver/shaders/dxil/dxil_controlflow.cpp
+35
View File
@@ -71,6 +71,38 @@ already computed
namespace DXIL
{
void OutputGraph(const char *const name, const ControlFlow *graph)
{
ControlFlow::BlockArray divergentBlocks = graph->GetDivergentBlocks();
rdcarray<ConvergentBlockData> convergentBlocks = graph->GetConvergentBlocks();
rdcstr fname = StringFormat::Fmt("%s.txt", name);
FILE *f = FileIO::fopen(fname.c_str(), FileIO::WriteText);
rdcstr line = StringFormat::Fmt("digraph %s {\n", name);
fprintf(f, line.c_str());
for(uint32_t from : graph->m_Blocks)
{
line = StringFormat::Fmt("%u", from);
if(divergentBlocks.contains(from))
line += StringFormat::Fmt(" [shape=diamond color=red]");
line += ";\n";
for(uint32_t to : graph->m_BlockOutLinks[from])
line += StringFormat::Fmt("%u -> %u [weight=1];\n", from, to);
fprintf(f, line.c_str());
}
for(ConvergentBlockData data : convergentBlocks)
{
line = StringFormat::Fmt("%u -> %u [weight=0 style=dashed color=blue constraint=false];\n",
data.first, data.second, data.first, data.second);
fprintf(f, line.c_str());
}
fprintf(f, "}\n");
FileIO::fclose(f);
}
bool ControlFlow::IsBlockConnected(const size_t pathsType, uint32_t from, uint32_t to) const
{
const rdcarray<BlockPath> &paths = m_PathSets[pathsType];
@@ -627,6 +659,7 @@ void ControlFlow::Construct(const rdcarray<rdcpair<uint32_t, uint32_t>> &links)
}
RDCLOG("Convergent Blocks: %s", output.c_str());
}
// OutputGraph("dxil_cfg", this);
// Clear temporary data
m_TracedBlocks.clear();
@@ -1813,6 +1846,8 @@ TEST_CASE("DXIL Control Flow", "[dxil][controlflow]")
REQUIRE(expectedCountDivergentBlocks == convergentBlocks.count());
CheckDivergentBlocks(expectedConvergentBlocks, divergentBlocks);
CheckConvergentBlocks(expectedConvergentBlocks, convergentBlocks);
// OutputGraph("complex_case", &controlFlow);
}
};
};
renderdoc/driver/shaders/dxil/dxil_controlflow.h
+2
View File
@@ -87,5 +87,7 @@ private:
rdcarray<uint32_t> m_DivergentBlocks;
rdcarray<ConvergentBlockData> m_ConvergentBlocks;
mutable rdcarray<rdcarray<ConnectionState>> m_Connections;
friend void OutputGraph(const char *const name, const ControlFlow *graph);
};
}; // namespace DXIL