Various fixes for VS-only pipeline

src/Device/QuadRasterizer.cpp

@@ -164,6 +164,8 @@ namespace sw
 					Dw = *Pointer<Float4>(primitive + OFFSET(Primitive,w.C), 16) + yyyy * *Pointer<Float4>(primitive + OFFSET(Primitive,w.B), 16);
 				}
 
+				if (spirvShader)
+				{
 					for (int interpolant = 0; interpolant < MAX_INTERFACE_COMPONENTS; interpolant++)
 					{
 						if (spirvShader->inputs[interpolant].Type == SpirvShader::ATTRIBTYPE_UNUSED)
@@ -172,7 +174,9 @@ namespace sw
 						Dv[interpolant] = *Pointer<Float4>(primitive + OFFSET(Primitive, V[interpolant].C), 16);
 						if (!spirvShader->inputs[interpolant].Flat)
 						{
-						Dv[interpolant] += yyyy * *Pointer<Float4>(primitive + OFFSET(Primitive, V[interpolant].B), 16);
+							Dv[interpolant] +=
+									yyyy * *Pointer<Float4>(primitive + OFFSET(Primitive, V[interpolant].B), 16);
+						}
 					}
 				}
 

src/Device/SetupProcessor.cpp

@@ -89,10 +89,13 @@ namespace sw
 		state.multiSample = context->sampleCount;
 		state.rasterizerDiscard = context->rasterizerDiscard;
 
+		if (context->pixelShader)
+		{
 			for (int interpolant = 0; interpolant < MAX_INTERFACE_COMPONENTS; interpolant++)
 			{
 				state.gradient[interpolant] = context->pixelShader->inputs[interpolant];
 			}
+		}
 
 		state.hash = state.computeHash();
 

src/Pipeline/PixelRoutine.cpp

@@ -37,8 +37,9 @@ namespace sw
 		  routine(pipelineLayout),
 		  descriptorSets(descriptorSets)
 	{
+		if (spirvShader)
+		{
 			spirvShader->emitProlog(&routine);
-
 			if (forceClearRegisters)
 			{
 				for (int i = 0; i < MAX_INTERFACE_COMPONENTS; i++)
@@ -47,6 +48,7 @@ namespace sw
 				}
 			}
 		}
+	}
 
 	PixelRoutine::~PixelRoutine()
 	{
@@ -59,7 +61,7 @@ namespace sw
 		#endif
 
 		// TODO: consider shader which modifies sample mask in general
-		const bool earlyDepthTest = !spirvShader->getModes().DepthReplacing && !state.alphaToCoverage;
+		const bool earlyDepthTest = !spirvShader || (!spirvShader->getModes().DepthReplacing && !state.alphaToCoverage);
 
 		Int zMask[4];   // Depth mask
 		Int sMask[4];   // Stencil mask
@@ -147,9 +149,11 @@ namespace sw
 				}
 			}
 
+			if (spirvShader)
+			{
 				for (int interpolant = 0; interpolant < MAX_INTERFACE_COMPONENTS; interpolant++)
 				{
-				auto const & input = spirvShader->inputs[interpolant];
+					auto const &input = spirvShader->inputs[interpolant];
 					if (input.Type != SpirvShader::ATTRIBTYPE_UNUSED)
 					{
 						if (input.Centroid && state.multiSample > 1)
@@ -170,6 +174,7 @@ namespace sw
 				}
 
 				setBuiltins(x, y, z, w);
+			}
 
 			#if PERF_PROFILE
 				cycles[PERF_INTERP] += Ticks() - interpTime;