HLSL: Fix #1423: implement CalculateLevelOfDetailUnclamped().

(If there is a bias issue, we need to discover what it is.)

HLSL: Fix #1423: implement CalculateLevelOfDetailUnclamped().
dccfeedf · John Kessenich · ab8960fd · dccfeedf · dccfeedf
Commit dccfeedf authored Jul 02, 2018 by John Kessenich
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Showing with 3 additions and 6 deletions

hlsl.calculatelodunclamped.dx10.frag.out Test/baseResults/hlsl.calculatelodunclamped.dx10.frag.out +0 -0

hlslParseHelper.cpp hlsl/hlslParseHelper.cpp +3 -6

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--- a/Test/baseResults/hlsl.calculatelodunclamped.dx10.frag.out
+++ b/Test/baseResults/hlsl.calculatelodunclamped.dx10.frag.out
--- a/hlsl/hlslParseHelper.cpp
+++ b/hlsl/hlslParseHelper.cpp
@@ -4377,16 +4377,13 @@ void HlslParseContext::decomposeSampleMethods(const TSourceLoc& loc, TIntermType
            txquerylod->getSequence().push_back(txcombine);
            txquerylod->getSequence().push_back(argCoord);

-            TIntermTyped* lodComponent = intermediate.addConstantUnion(0, loc, true);
+            TIntermTyped* lodComponent = intermediate.addConstantUnion(
+                op == EOpMethodCalculateLevelOfDetail ? 0 : 1,
+                loc, true);
            TIntermTyped* lodComponentIdx = intermediate.addIndex(EOpIndexDirect, txquerylod, lodComponent, loc);
            lodComponentIdx->setType(TType(EbtFloat, EvqTemporary, 1));
-
            node = lodComponentIdx;

-            // We cannot currently obtain the unclamped LOD
-            if (op == EOpMethodCalculateLevelOfDetailUnclamped)
-                error(loc, "unimplemented: CalculateLevelOfDetailUnclamped", "", "");
-
            break;
        }