Don't assign a `binding` to a `push_constant` buffer

Fixes #12

- This was a latent issue, but the previous commit brought it to the front.

- As indicated in #12, I don't allocate a descriptor-table slot to the block
  - Instead I allocate a `PushConstantBuffer`

- Unlike what #12 asks for, I don't use a different resource type for the contents of the block
  - Pretty much all the logic is easiest if these continue to be just plain `Uniform` data

1 files changed, 5 insertions, 4 deletions

diff --git a/source/slang/type-layout.h b/source/slang/type-layout.h
index add9930ae..d2254c9e5 100644
--- a/source/slang/type-layout.h
+++ b/source/slang/type-layout.h
@@ -517,10 +517,11 @@ struct LayoutRulesImpl
 
 struct LayoutRulesFamilyImpl
 {
-    virtual LayoutRulesImpl* getConstantBufferRules()   = 0;
-    virtual LayoutRulesImpl* getTextureBufferRules()    = 0;
-    virtual LayoutRulesImpl* getVaryingInputRules()     = 0;
-    virtual LayoutRulesImpl* getVaryingOutputRules()    = 0;
+    virtual LayoutRulesImpl* getConstantBufferRules()       = 0;
+    virtual LayoutRulesImpl* getPushConstantBufferRules()   = 0;
+    virtual LayoutRulesImpl* getTextureBufferRules()        = 0;
+    virtual LayoutRulesImpl* getVaryingInputRules()         = 0;
+    virtual LayoutRulesImpl* getVaryingOutputRules()        = 0;
     virtual LayoutRulesImpl* getSpecializationConstantRules()   = 0;
     virtual LayoutRulesImpl* getShaderStorageBufferRules()      = 0;
 };