Merge pull request #143 from Yasei-no-otoko/avoid-gc

Avoid GC allocate in ColorGrading GetCurveTexture

Author: Chman

PostProcessing/Runtime/Components/ColorGradingComponent.cs

@@ -33,6 +33,7 @@ static class Uniforms
         const float k_CurveStep = 1f / k_CurvePrecision;
 
         Texture2D m_GradingCurves;
+        Color[] m_pixels = new Color[k_CurvePrecision * 2];
 
         public override bool active
         {
@@ -236,9 +237,7 @@ Texture2D GetCurveTexture()
                 };
             }
 
-            var pixels = new Color[k_CurvePrecision * 2];
             var curves = model.settings.curves;
-
             curves.hueVShue.Cache();
             curves.hueVSsat.Cache();
 
@@ -251,17 +250,17 @@ Texture2D GetCurveTexture()
                 float y = curves.hueVSsat.Evaluate(t);
                 float z = curves.satVSsat.Evaluate(t);
                 float w = curves.lumVSsat.Evaluate(t);
-                pixels[i] = new Color(x, y, z, w);
+                m_pixels[i] = new Color(x, y, z, w);
 
                 // YRGB
                 float m = curves.master.Evaluate(t);
                 float r = curves.red.Evaluate(t);
                 float g = curves.green.Evaluate(t);
                 float b = curves.blue.Evaluate(t);
-                pixels[i + k_CurvePrecision] = new Color(r, g, b, m);
+                m_pixels[i + k_CurvePrecision] = new Color(r, g, b, m);
             }
 
-            m_GradingCurves.SetPixels(pixels);
+            m_GradingCurves.SetPixels(m_pixels);
             m_GradingCurves.Apply(false, false);
 
             return m_GradingCurves;