shader: Implement early Z tests

2 files changed, 4 insertions, 0 deletions

diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
index 61a2018d7..7ad00c434 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
@@ -178,6 +178,9 @@ void DefineEntryPoint(const IR::Program& program, EmitContext& ctx, Id main) {
         if (program.info.stores_frag_depth) {
             ctx.AddExecutionMode(main, spv::ExecutionMode::DepthReplacing);
         }
+        if (ctx.profile.force_early_z) {
+            ctx.AddExecutionMode(main, spv::ExecutionMode::EarlyFragmentTests);
+        }
         break;
     default:
         throw NotImplementedException("Stage {}", program.stage);
diff --git a/src/shader_recompiler/profile.h b/src/shader_recompiler/profile.h
index 06f1f59bd..919bec4e2 100644
--- a/src/shader_recompiler/profile.h
+++ b/src/shader_recompiler/profile.h
@@ -53,6 +53,7 @@ struct Profile {
 
     std::array<AttributeType, 32> generic_input_types{};
     bool convert_depth_mode{};
+    bool force_early_z{};
 
     InputTopology input_topology{};