Improve MIS texture parameter naming

Assets/ScriptableRenderLoop/HDRenderLoop/Sky/Resources/GGXConvolve.shader

             SAMPLERCUBE(sampler_MainTex);
 
             #ifdef USE_MIS
-                #define MIS_TEXTURE_HEIGHT 256
-                #define MIS_TEXTURE_WIDTH  2 * MIS_TEXTURE_HEIGHT
+                #define TEXTURE_HEIGHT_MIS 256
+                #define TEXTURE_WIDTH_MIS  2 * TEXTURE_HEIGHT_MIS
                 TEXTURE2D(_MarginalRowDensities);
                 TEXTURE2D(_ConditionalDensities);
             #endif
                                                  V, N,
                                                  roughness,
                                                  _InvOmegaP,
-                                                 MIS_TEXTURE_WIDTH,
-                                                 MIS_TEXTURE_HEIGHT,
+                                                 TEXTURE_WIDTH_MIS,
+                                                 TEXTURE_HEIGHT_MIS,
                                                  1024,
                                                  false);
                 #else

Assets/ScriptableRenderLoop/HDRenderLoop/Sky/SkyManager.cs

 
         // Configuration parameters for Multiple Importance Sampling.
         const bool              m_useMIS           = false;
-        const int               MIS_TEXTURE_HEIGHT = 256;
-        const int               MIS_TEXTURE_WIDTH  = MIS_TEXTURE_HEIGHT * 2;
+        const int               m_TextureHeightMIS = 256;
+        const int               m_TextureWidthMIS  = m_TextureHeightMIS * 2;
 
         SkyParameters           m_SkyParameters = null;
 
                 if (m_useMIS)
                 {
                     // + 1 because we store the value of the integral of the cubemap at the end of the texture.
-                    m_SkyboxMarginalRowCdfRT = new RenderTexture(MIS_TEXTURE_HEIGHT + 1, 1, 1, RenderTextureFormat.RFloat);
+                    m_SkyboxMarginalRowCdfRT = new RenderTexture(m_TextureHeightMIS + 1, 1, 1, RenderTextureFormat.RFloat);
                     m_SkyboxMarginalRowCdfRT.dimension = TextureDimension.Tex2D;
                     m_SkyboxMarginalRowCdfRT.useMipMap = false;
                     m_SkyboxMarginalRowCdfRT.autoGenerateMips = false;
 
                     // TODO: switch the format to R16 (once it's available) to save some bandwidth.
-                    m_SkyboxConditionalCdfRT = new RenderTexture(MIS_TEXTURE_WIDTH, MIS_TEXTURE_HEIGHT, 1, RenderTextureFormat.RFloat);
+                    m_SkyboxConditionalCdfRT = new RenderTexture(m_TextureWidthMIS, m_TextureHeightMIS, 1, RenderTextureFormat.RFloat);
                     m_SkyboxConditionalCdfRT.dimension = TextureDimension.Tex2D;
                     m_SkyboxConditionalCdfRT.useMipMap = false;
                     m_SkyboxConditionalCdfRT.autoGenerateMips = false;
             m_BuildProbabilityTablesCS.SetTexture(m_MarginalRowDensitiesKernel, "marginalRowDensities", m_SkyboxMarginalRowCdfRT);
 
             var cmd = new CommandBuffer() { name = "" };
-            cmd.DispatchCompute(m_BuildProbabilityTablesCS, m_ConditionalDensitiesKernel, MIS_TEXTURE_HEIGHT, 1, 1);
+            cmd.DispatchCompute(m_BuildProbabilityTablesCS, m_ConditionalDensitiesKernel, m_TextureHeightMIS, 1, 1);
             cmd.DispatchCompute(m_BuildProbabilityTablesCS, m_MarginalRowDensitiesKernel, 1, 1, 1);
             renderLoop.ExecuteCommandBuffer(cmd);
             cmd.Dispose();