SPV texturing: Use comp. 2 as the 3rd comp. for Dref in ImageSampleProjDrefImplicitLod.

2015-12-13 12:23:33 -07:00
parent f5ce646546
commit 6feb4989fe
5 changed files with 9 additions and 9 deletions
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -1951,7 +1951,7 @@ spv::Id TGlslangToSpvTraverser::createImageTextureFunctionCall(glslang::TIntermO
        std::vector<spv::Id> indexes;
        int comp;
        if (cracked.proj)
-            comp = 3;
+            comp = 2;  // "The resulting 3rd component of P in the shadow forms is used as Dref"
        else
            comp = builder.getNumComponents(params.coords) - 1;
        indexes.push_back(comp);