1 files changed, 10 insertions, 0 deletions
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
index b8e3b8527..cc6b98f7e 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
@@ -225,6 +225,16 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
         ctx.AddExtension("SPV_EXT_demote_to_helper_invocation");
         ctx.AddCapability(spv::Capability::DemoteToHelperInvocationEXT);
     }
+    if (info.stores_viewport_index) {
+        ctx.AddCapability(spv::Capability::MultiViewport);
+        if (profile.support_viewport_index_layer_non_geometry &&
+            ctx.stage == Shader::Stage::VertexB) {
+            ctx.AddExtension("SPV_EXT_shader_viewport_index_layer");
+            ctx.AddCapability(spv::Capability::ShaderViewportIndexLayerEXT);
+        } else {
+            ctx.ignore_viewport_layer = true;
+        }
+    }
     if (!profile.support_vertex_instance_id && (info.loads_instance_id || info.loads_vertex_id)) {
         ctx.AddExtension("SPV_KHR_shader_draw_parameters");
         ctx.AddCapability(spv::Capability::DrawParameters);