2 files changed, 12 insertions, 12 deletions

diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
index 93e2704b4..c84f9e4be 100644
--- a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
+++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
@@ -543,7 +543,7 @@ private:
         }
 
         for (u32 rt = 0; rt < static_cast<u32>(frag_colors.size()); ++rt) {
-            if (!IsRenderTargetUsed(rt)) {
+            if (!specialization.enabled_rendertargets[rt]) {
                 continue;
             }
 
@@ -1868,12 +1868,18 @@ private:
             // rendertargets/components are skipped in the register assignment.
             u32 current_reg = 0;
             for (u32 rt = 0; rt < Maxwell::NumRenderTargets; ++rt) {
+                if (!specialization.enabled_rendertargets[rt]) {
+                    // Skip rendertargets that are not enabled
+                    continue;
+                }
                 // TODO(Subv): Figure out how dual-source blending is configured in the Switch.
                 for (u32 component = 0; component < 4; ++component) {
+                    const Id pointer = AccessElement(t_out_float, frag_colors.at(rt), component);
                     if (header.ps.IsColorComponentOutputEnabled(rt, component)) {
-                        OpStore(AccessElement(t_out_float, frag_colors.at(rt), component),
-                                SafeGetRegister(current_reg));
+                        OpStore(pointer, SafeGetRegister(current_reg));
                         ++current_reg;
+                    } else {
+                        OpStore(pointer, component == 3 ? v_float_one : v_float_zero);
                     }
                 }
             }
@@ -2003,15 +2009,6 @@ private:
         return DeclareBuiltIn(builtin, spv::StorageClass::Input, type, std::move(name));
     }
 
-    bool IsRenderTargetUsed(u32 rt) const {
-        for (u32 component = 0; component < 4; ++component) {
-            if (header.ps.IsColorComponentOutputEnabled(rt, component)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
     template <typename... Args>
     Id AccessElement(Id pointer_type, Id composite, Args... elements_) {
         std::vector<Id> members;
diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.h b/src/video_core/renderer_vulkan/vk_shader_decompiler.h
index 2b01321b6..415801b6c 100644
--- a/src/video_core/renderer_vulkan/vk_shader_decompiler.h
+++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.h
@@ -101,6 +101,9 @@ struct Specialization final {
         Maxwell::TessellationSpacing spacing{};
         bool clockwise{};
     } tessellation;
+
+    // Fragment specific
+    std::bitset<8> enabled_rendertargets;
 };
 // Old gcc versions don't consider this trivially copyable.
 // static_assert(std::is_trivially_copyable_v<Specialization>);