4 files changed, 9 insertions, 10 deletions

diff --git a/src/shader_recompiler/backend/glasm/emit_context.cpp b/src/shader_recompiler/backend/glasm/emit_context.cpp
index e18526816..08918a5c2 100644
--- a/src/shader_recompiler/backend/glasm/emit_context.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_context.cpp
@@ -117,13 +117,9 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
                 index, index);
         }
     }
-    for (size_t index = 0; index < info.stores_frag_color.size(); ++index) {
-        if (!info.stores_frag_color[index]) {
-            continue;
-        }
-        if (index == 0) {
-            Add("OUTPUT frag_color0=result.color;");
-        } else {
+    if (stage == Stage::Fragment) {
+        Add("OUTPUT frag_color0=result.color;");
+        for (size_t index = 1; index < info.stores_frag_color.size(); ++index) {
             Add("OUTPUT frag_color{}=result.color[{}];", index, index);
         }
     }
diff --git a/src/shader_recompiler/backend/glasm/emit_glasm.cpp b/src/shader_recompiler/backend/glasm/emit_glasm.cpp
index e23208d2c..70ca6f621 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm.cpp
@@ -298,8 +298,7 @@ void SetupOptions(const IR::Program& program, const Profile& profile,
     if (stage == Stage::Fragment && runtime_info.force_early_z != 0) {
         header += "OPTION NV_early_fragment_tests;";
     }
-    const auto non_zero_frag_colors{info.stores_frag_color | std::views::drop(1)};
-    if (std::ranges::find(non_zero_frag_colors, true) != non_zero_frag_colors.end()) {
+    if (stage == Stage::Fragment) {
         header += "OPTION ARB_draw_buffers;";
     }
 }
diff --git a/src/shader_recompiler/backend/spirv/emit_context.cpp b/src/shader_recompiler/backend/spirv/emit_context.cpp
index 3e8899f53..7c618125e 100644
--- a/src/shader_recompiler/backend/spirv/emit_context.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_context.cpp
@@ -1320,7 +1320,7 @@ void EmitContext::DefineOutputs(const IR::Program& program) {
         break;
     case Stage::Fragment:
         for (u32 index = 0; index < 8; ++index) {
-            if (!info.stores_frag_color[index]) {
+            if (!info.stores_frag_color[index] && !profile.need_declared_frag_colors) {
                 continue;
             }
             frag_color[index] = DefineOutput(*this, F32[4], std::nullopt);
diff --git a/src/shader_recompiler/profile.h b/src/shader_recompiler/profile.h
index f8913bf14..f059e3b26 100644
--- a/src/shader_recompiler/profile.h
+++ b/src/shader_recompiler/profile.h
@@ -84,7 +84,11 @@ struct Profile {
     bool support_int64_atomics{};
 
     bool warp_size_potentially_larger_than_guest{};
+
     bool lower_left_origin_mode{};
+    /// Fragment outputs have to be declared even if they are not written to avoid undefined values.
+    /// See Ori and the Blind Forest's main menu for reference.
+    bool need_declared_frag_colors{};
 
     /// OpFClamp is broken and OpFMax + OpFMin should be used instead
     bool has_broken_spirv_clamp{};