RGB32F texture sampling fix

A cl recently introduced the XRB32F internal format, but while it fixed some cases where this format is used as a rendertarget, it seems to have caused regressions in sampling. A new case has been added in the sampling code to handle this new format properly. Change-Id: I7aa537a410d7b68c47771a72dec487e4b4c4e8be Reviewed-on: https://swiftshader-review.googlesource.com/5147Tested-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <capn@google.com>

RGB32F texture sampling fix
337f3d58 · Alexis Hetu · Alexis Hétu · 6edaa888 · 337f3d58
Commit 337f3d58 authored Apr 18, 2016 by Alexis Hetu Committed by Alexis Hétu Apr 18, 2016
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SamplerCore.cpp src/Shader/SamplerCore.cpp +9 -0

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--- a/src/Shader/SamplerCore.cpp
+++ b/src/Shader/SamplerCore.cpp
@@ -1950,6 +1950,15 @@ namespace sw
 			c.w = *Pointer<Float4>(buffer[f3] + index[3] * 16, 16);
 			transpose4x4(c.x, c.y, c.z, c.w);
 			break;
+		case 3:
+			ASSERT(state.textureFormat == FORMAT_X32B32G32R32F);
+			c.x = *Pointer<Float4>(buffer[f0] + index[0] * 16, 16);
+			c.y = *Pointer<Float4>(buffer[f1] + index[1] * 16, 16);
+			c.z = *Pointer<Float4>(buffer[f2] + index[2] * 16, 16);
+			c.w = *Pointer<Float4>(buffer[f3] + index[3] * 16, 16);
+			transpose4x3(c.x, c.y, c.z, c.w);
+			c.w = Float4(1.0f);
+			break;
 		case 2:
 			// FIXME: Optimal shuffling?
 			c.x.xy = *Pointer<Float4>(buffer[f0] + index[0] * 8);