Fix vertex stream count and normalized data layout.

tests/fuzzers/VertexRoutineFuzzer.cpp

@@ -26,6 +26,7 @@
 
 #include <cstdint>
 #include <memory>
+#include <cassert>
 
 namespace {
 
@@ -149,11 +150,13 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
 		return 0;
 	}
 
+	constexpr int MAX_ATTRIBUTE_COMPONENTS = 4;
+
 	struct Stream
 	{
-		uint8_t count : BITS(sw::STREAMTYPE_LAST);
-		bool normalized;
-		uint8_t reserved : 8 - BITS(sw::STREAMTYPE_LAST) - 1;
+		uint8_t count : BITS(MAX_ATTRIBUTE_COMPONENTS);
+		bool normalized : 1;
+		uint8_t reserved : 8 - BITS(MAX_ATTRIBUTE_COMPONENTS) - 1;
 	};
 
 	for(int i = 0; i < sw::MAX_VERTEX_INPUTS; i++)
@@ -162,7 +165,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
 		Stream stream = (Stream&)data[1 + 2 * i + 1];
 
 		if(type > sw::STREAMTYPE_LAST) return 0;
-		if(stream.count > 4) return 0;
+		if(stream.count > MAX_ATTRIBUTE_COMPONENTS) return 0;
 		if(stream.reserved != 0) return 0;
 
 		state.input[i].type = type;
@@ -199,5 +202,12 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
 	sw::VertexProgram program(state, bytecodeShader.get());
 	program.generate();
 
+	// TODO
+//	sw::Routine *routine = program(L"VertexRoutine");
+//	assert(routine);
+//	const void *entry = routine->getEntry();
+//	assert(entry);
+//	delete routine;
+
 	return 0;
 }