From 92bebecf4632fb5435d74a77d45bf56535eb85e4 Mon Sep 17 00:00:00 2001
From: vonchenplus <vonchenplus@gmail.com>
Date: Tue, 26 Oct 2021 23:09:44 +0800
Subject: Support gl_FrontSecondaryColor attribute

---
 src/shader_recompiler/backend/spirv/emit_context.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src/shader_recompiler/backend/spirv/emit_context.cpp')

diff --git a/src/shader_recompiler/backend/spirv/emit_context.cpp b/src/shader_recompiler/backend/spirv/emit_context.cpp
index 9d84c4fc62..7726bc9c6d 100644
--- a/src/shader_recompiler/backend/spirv/emit_context.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_context.cpp
@@ -1286,6 +1286,14 @@ void EmitContext::DefineInputs(const IR::Program& program) {
         Decorate(id, spv::Decoration::Location, location);
         input_front_color = id;
     }
+    if (loads.AnyComponent(IR::Attribute::ColorFrontSpecularR)) {
+        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
+        previous_unused_location = location;
+        used_locations.set(location);
+        const Id id{DefineInput(*this, F32[4], true)};
+        Decorate(id, spv::Decoration::Location, location);
+        input_front_secondary_color = id;
+    }
     if (loads.AnyComponent(IR::Attribute::ColorBackDiffuseR)) {
         const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
         previous_unused_location = location;
@@ -1371,6 +1379,14 @@ void EmitContext::DefineOutputs(const IR::Program& program) {
         Decorate(id, spv::Decoration::Location, static_cast<u32>(location));
         output_front_color = id;
     }
+    if (info.stores.AnyComponent(IR::Attribute::ColorFrontSpecularR)) {
+        const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
+        previous_unused_location = location;
+        used_locations.set(location);
+        const Id id{DefineOutput(*this, F32[4], invocations)};
+        Decorate(id, spv::Decoration::Location, static_cast<u32>(location));
+        output_front_secondary_color = id;
+    }
     if (info.stores.AnyComponent(IR::Attribute::ColorBackDiffuseR)) {
         const size_t location = FindNextUnusedLocation(used_locations, previous_unused_location);
         previous_unused_location = location;
-- 
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