diff options
Diffstat (limited to 'source/slang/reflection.cpp')
| -rw-r--r-- | source/slang/reflection.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/source/slang/reflection.cpp b/source/slang/reflection.cpp index 14199f126..a1ea3ff72 100644 --- a/source/slang/reflection.cpp +++ b/source/slang/reflection.cpp @@ -666,6 +666,36 @@ SLANG_API size_t spReflectionVariableLayout_GetSemanticIndex(SlangReflectionVari return varLayout->semanticIndex; } +SLANG_API SlangStage spReflectionVariableLayout_getStage( + SlangReflectionVariableLayout* inVarLayout) +{ + auto varLayout = convert(inVarLayout); + if(!varLayout) return SLANG_STAGE_NONE; + + // A parameter that is not a varying input or output is + // not considered to belong to a single stage. + // + // TODO: We might need to reconsider this for, e.g., entry + // point parameters, where they might be stage-specific even + // if they are uniform. + if (!varLayout->FindResourceInfo(Slang::LayoutResourceKind::VaryingInput) + && !varLayout->FindResourceInfo(Slang::LayoutResourceKind::VaryingOutput)) + { + return SLANG_STAGE_NONE; + } + + // TODO: We should find the stage for a variable layout by + // walking up the tree of layout information, until we find + // something that has a definitive stage attached to it (e.g., + // either an entry point or a GLSL translation unit). + // + // We don't currently have parent links in the reflection layout + // information, so doing that walk would be tricky right now, so + // it is easier to just bloat the representation and store yet another + // field on every variable layout. + return (SlangStage) varLayout->stage; +} + // Shader Parameter Reflection |