mirror of
https://github.com/daniel-lynch/ovrplugin-openxr-shim.git
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Daniel LynchandClaude Opus 4.8
a72a79ad29
An independent reimplementation of Meta's libOVRPlugin ABI on top of OpenXR, so VrApi-era Meta Quest VR titles can run on non-Meta OpenXR runtimes (Monado, Steam Frame) instead of being locked to Meta hardware. Original code only — no Meta/Epic/Capcom binaries, headers, or assets. Includes a desktop harness that drives the shim against Monado headless. Scope/legal: interoperability; entitlement handling is out of scope. See README for the legal/scope section and docs/ for the research trail and design notes. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01D6sFYGXZPsq3v7xtcDES6g
72 lines
3.2 KiB
Java
72 lines
3.2 KiB
Java
// Dump ovrp* struct layouts Ghidra inferred + decompile the Compositor layer
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// methods (ground-truth field offsets for ovrpLayerDesc / ovrpLayerSubmit).
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// -> ~/dev/re4vr-port/analysis/struct_layouts.txt
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// @category RE4VR
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import ghidra.app.script.GhidraScript;
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import ghidra.app.decompiler.*;
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import ghidra.program.model.data.*;
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import ghidra.program.model.listing.*;
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import java.io.PrintWriter;
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import java.util.*;
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public class DumpStructs extends GhidraScript {
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public void run() throws Exception {
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String out = System.getProperty("user.home")
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+ "/dev/re4vr-port/analysis/struct_layouts.txt";
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PrintWriter w = new PrintWriter(out);
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// 1) every struct/typedef whose name mentions ovrp or Layer
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w.println("## ===== INFERRED STRUCT LAYOUTS (name ~ ovrp|Layer) =====");
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DataTypeManager dtm = currentProgram.getDataTypeManager();
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Iterator<DataType> it = dtm.getAllDataTypes();
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while (it.hasNext()) {
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DataType dt = it.next();
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String nm = dt.getName();
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if (!(nm.toLowerCase().contains("ovrp") || nm.contains("Layer"))) continue;
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if (dt instanceof Structure) {
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Structure s = (Structure) dt;
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w.println("\nstruct " + nm + " /* size=" + s.getLength()
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+ " (0x" + Integer.toHexString(s.getLength()) + ") */ {");
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for (DataTypeComponent c : s.getComponents()) {
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w.printf(" +0x%-4x %-24s %s%n", c.getOffset(),
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c.getDataType().getName(),
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c.getFieldName() == null ? "" : c.getFieldName());
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}
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w.println("};");
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} else {
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w.println(nm + " (" + dt.getClass().getSimpleName()
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+ ", len=" + dt.getLength() + ")");
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}
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}
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// 2) decompile the Compositor layer methods for real offsets
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String[] targets = {
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"ImportLayerDesc", "ExportEyeLayerDesc", "CalculateEyeLayerDesc",
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"SetupLayer", "GetLayerTexture", "EndFrame", "SubmitLayer"
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};
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w.println("\n\n## ===== COMPOSITOR METHOD BODIES (field-offset ground truth) =====");
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DecompInterface dec = new DecompInterface();
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dec.openProgram(currentProgram);
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FunctionManager fm = currentProgram.getFunctionManager();
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Set<String> seen = new HashSet<>();
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for (Function f : fm.getFunctions(true)) {
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String name = f.getName();
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boolean hit = false;
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for (String t : targets) if (name.contains(t)) { hit = true; break; }
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if (!hit) continue;
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if (!seen.add(f.getEntryPoint().toString())) continue;
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try {
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DecompileResults r = dec.decompileFunction(f, 60, monitor);
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DecompiledFunction df = r.getDecompiledFunction();
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if (df != null) {
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w.println("\n/* ===== " + name + " @ " + f.getEntryPoint()
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+ " ===== */");
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w.println(df.getC());
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}
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} catch (Exception e) { /* skip */ }
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}
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w.close();
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println("DumpStructs: wrote " + out);
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}
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}
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