[Fix] (DirectVulkan): suppress blended depth writes on Qualcomm and mark gl_Position invariant to fix MC 26.3 OIT cloud flicker

2026-09-12 22:28:32 +09:00 · 2026-07-19 05:47:23 -04:00
parent fc0688c223
commit f3def150e7
6 changed files with 145 additions and 0 deletions
@@ -39,6 +39,13 @@ namespace MobileGL {
                // which wrongly includes baseInstance).
                static bool RebaseInstanceIndexForVulkan(const Vector<Uint32>& inputBinary,
                                                         Vector<uint32_t>& outputBinary);
+                // Adds the Invariant decoration to every Position builtin output. GL apps
+                // routinely rely on cross-program position invariance for multi-pass
+                // equality depth tests (e.g. GEQUAL re-draws of the same geometry), and
+                // mobile drivers that optimize per-pipeline break that without the
+                // decoration. DirectVulkan only.
+                static bool DecoratePositionInvariantForVulkan(const Vector<Uint32>& inputBinary,
+                                                               Vector<uint32_t>& outputBinary);
                static Result<String> DecompileShader(SpvcSession& session);
            };
        } // namespace ShaderTranspiler