From 11f4e739bd6d076606069420a38a5e8535fa9440 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Sat, 20 Jul 2019 17:38:25 -0400
Subject: Shader_Ir: Implement F16 Variants of F2F, F2I, I2F.

This commit takes care of implementing the F16 Variants of the
conversion instructions and makes sure conversions are done.
---
 .../renderer_opengl/gl_shader_decompiler.cpp           | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src/video_core/renderer_opengl')

diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index e19d502bc..7e9251626 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -1122,6 +1122,16 @@ private:
                                Type::Float);
     }
 
+    std::string FCastHalf0(Operation operation) {
+        const std::string op_a = VisitOperand(operation, 0, Type::HalfFloat);
+        return fmt::format("({})[0]", op_a);
+    }
+
+    std::string FCastHalf1(Operation operation) {
+        const std::string op_a = VisitOperand(operation, 0, Type::HalfFloat);
+        return fmt::format("({})[1]", op_a);
+    }
+
     template <Type type>
     std::string Min(Operation operation) {
         return GenerateBinaryCall(operation, "min", type, type, type);
@@ -1278,6 +1288,11 @@ private:
         return ApplyPrecise(operation, BitwiseCastResult(clamped, Type::HalfFloat));
     }
 
+    std::string HCastFloat(Operation operation) {
+        const std::string op_a = VisitOperand(operation, 0, Type::Float);
+        return fmt::format("fromHalf2(vec2({}, 0.0f))", op_a);
+    }
+
     std::string HUnpack(Operation operation) {
         const std::string operand{VisitOperand(operation, 0, Type::HalfFloat)};
         const auto value = [&]() -> std::string {
@@ -1718,6 +1733,8 @@ private:
         &GLSLDecompiler::Negate<Type::Float>,
         &GLSLDecompiler::Absolute<Type::Float>,
         &GLSLDecompiler::FClamp,
+        &GLSLDecompiler::FCastHalf0,
+        &GLSLDecompiler::FCastHalf1,
         &GLSLDecompiler::Min<Type::Float>,
         &GLSLDecompiler::Max<Type::Float>,
         &GLSLDecompiler::FCos,
@@ -1778,6 +1795,7 @@ private:
         &GLSLDecompiler::Absolute<Type::HalfFloat>,
         &GLSLDecompiler::HNegate,
         &GLSLDecompiler::HClamp,
+        &GLSLDecompiler::HCastFloat,
         &GLSLDecompiler::HUnpack,
         &GLSLDecompiler::HMergeF32,
         &GLSLDecompiler::HMergeH0,
-- 
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