commit 75a6185ae44bea0c703f8a24dc4feea671416b54
author Alexis Hetu <sugoi@google.com> Fri Jul 14 14:17:14 2017 -0400
committer Alexis Hétu <sugoi@google.com> Thu Jul 20 15:17:31 2017 +0000
tree 84e745183dfd7b3071f81fe98dc20813e422d014
parent 6e744267d366d897716136c0008f934f16055ada

Compute texture coordinates using floating point operations

Modified the texture coordinate computation to use floating
point operations when sampling floating point textures to
increase accuracy and remove useless type conversions.

Bug swiftshader:76

Change-Id: I76e5fd9a68aa6ba5eb21524edb8c6c6183e5430e
Reviewed-on: https://swiftshader-review.googlesource.com/10628
Tested-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

src/Renderer/Sampler.cpp

diff --git a/src/Renderer/Sampler.cpp b/src/Renderer/Sampler.cpp
index 7d7d47c..24734da 100644
--- a/src/Renderer/Sampler.cpp
+++ b/src/Renderer/Sampler.cpp
@@ -207,8 +207,15 @@
 				mipmap.onePitchP[2] = 1;
 				mipmap.onePitchP[3] = pitchP;
 
+				mipmap.pitchP[0] = pitchP;
+				mipmap.pitchP[1] = pitchP;
+				mipmap.pitchP[2] = pitchP;
+				mipmap.pitchP[3] = pitchP;
+
 				mipmap.sliceP[0] = sliceP;
 				mipmap.sliceP[1] = sliceP;
+				mipmap.sliceP[2] = sliceP;
+				mipmap.sliceP[3] = sliceP;
 
 				if(internalTextureFormat == FORMAT_YV12_BT601 ||
 				   internalTextureFormat == FORMAT_YV12_BT709 ||