swr/rast: Add extra (optional) parameter in GATHERPS

Now also takes in an additional parameter (draw context) for future
expansion.

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

src/gallium/drivers/swr/rasterizer/jitter/builder.h

@@ -38,6 +38,8 @@ namespace SwrJit
     struct Builder
     {
         Builder(JitManager *pJitMgr);
+        virtual ~Builder() {}
+
         IRBuilder<> *IRB() { return mpIRBuilder; };
         JitManager *JM() { return mpJitMgr; }
 

src/gallium/drivers/swr/rasterizer/jitter/builder_misc.cpp

@@ -589,7 +589,7 @@ namespace SwrJit
     /// @param vIndices - SIMD wide value of VB byte offsets
     /// @param vMask - SIMD wide mask that controls whether to access memory or the src values
     /// @param scale - value to scale indices by
-    Value *Builder::GATHERPS(Value *vSrc, Value *pBase, Value *vIndices, Value *vMask, uint8_t scale)
+    Value *Builder::GATHERPS(Value *vSrc, Value *pBase, Value *vIndices, Value *vMask, uint8_t scale, Value *pDrawContext)
     {
         Value *vGather;
 

src/gallium/drivers/swr/rasterizer/jitter/builder_misc.h

@@ -134,7 +134,7 @@ Value *MASKLOADD(Value* src, Value* mask);
 void Gather4(const SWR_FORMAT format, Value* pSrcBase, Value* byteOffsets,
                       Value* mask, Value* vGatherComponents[], bool bPackedOutput);
 
-Value *GATHERPS(Value *src, Value *pBase, Value *indices, Value *mask, uint8_t scale = 1);
+virtual Value *GATHERPS(Value *src, Value *pBase, Value *indices, Value *mask, uint8_t scale = 1, Value *pDrawContext = nullptr);
 Value *GATHERPS_16(Value *src, Value *pBase, Value *indices, Value *mask, uint8_t scale = 1);
 
 void GATHER4PS(const SWR_FORMAT_INFO &info, Value* pSrcBase, Value* byteOffsets,

src/gallium/drivers/swr/rasterizer/jitter/fetch_jit.cpp

@@ -55,9 +55,12 @@ enum ConversionType
 //////////////////////////////////////////////////////////////////////////
 /// Interface to Jitting a fetch shader
 //////////////////////////////////////////////////////////////////////////
-struct FetchJit : public Builder
+struct FetchJit : 
+    public Builder
 {
-    FetchJit(JitManager* pJitMgr) : Builder(pJitMgr){};
+    FetchJit(JitManager* pJitMgr) :
+        Builder(pJitMgr)
+    {}
 
     Function* Create(const FETCH_COMPILE_STATE& fetchState);
 
@@ -1361,7 +1364,7 @@ void FetchJit::JitGatherVertices(const FETCH_COMPILE_STATE &fetchState,
                                 // But, we know that elements must be aligned for FETCH. :)
                                 // Right shift the offset by a bit and then scale by 2 to remove the sign extension.
                                 Value *vShiftedOffsets = LSHR(vOffsets, 1);
-                                vVertexElements[currentVertexElement++] = GATHERPS(gatherSrc, pStreamBase, vShiftedOffsets, vGatherMask, 2);
+                                vVertexElements[currentVertexElement++] = GATHERPS(gatherSrc, pStreamBase, vShiftedOffsets, vGatherMask, 2, mpPrivateContext);
                             }
                             else
                             {