From 29658532537e1db4ea4ab8142133407fd1e2f8ed Mon Sep 17 00:00:00 2001
From: assiduous <assiduous@diligentgraphics.com>
Date: Fri, 3 Apr 2020 22:38:37 -0700
Subject: Math lib: added RGBA8Unorm_To_F4Color and F4Color_To_RGBA8Unorm
 functions

---
 Common/interface/BasicMath.hpp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'Common/interface')

diff --git a/Common/interface/BasicMath.hpp b/Common/interface/BasicMath.hpp
index 81f646fb..867c91cd 100644
--- a/Common/interface/BasicMath.hpp
+++ b/Common/interface/BasicMath.hpp
@@ -1919,6 +1919,29 @@ T min3(const T& x, const T& y, const T& z)
     return std::min(std::min(x, y), z);
 }
 
+inline float4 RGBA8Unorm_To_F4Color(Uint32 RGBA8)
+{
+    // clang-format off
+    return float4
+    {
+            static_cast<float>((RGBA8 >>  0u) & 0xFF) / 255.f,
+            static_cast<float>((RGBA8 >>  8u) & 0xFF) / 255.f,
+            static_cast<float>((RGBA8 >> 16u) & 0xFF) / 255.f,
+            static_cast<float>((RGBA8 >> 24u) & 0xFF) / 255.f
+    };
+    // clang-format on
+}
+
+inline Uint32 F4Color_To_RGBA8Unorm(const float4& f4Color)
+{
+    Uint32 RGBA8U = 0;
+    RGBA8U |= static_cast<Uint32>(clamp(f4Color.r, 0.f, 1.f) * 255.f) << 0u;
+    RGBA8U |= static_cast<Uint32>(clamp(f4Color.g, 0.f, 1.f) * 255.f) << 8u;
+    RGBA8U |= static_cast<Uint32>(clamp(f4Color.b, 0.f, 1.f) * 255.f) << 16u;
+    RGBA8U |= static_cast<Uint32>(clamp(f4Color.a, 0.f, 1.f) * 255.f) << 24u;
+    return RGBA8U;
+}
+
 } // namespace Diligent
 
 
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