Adding bindless material descriptors

res/shaders/lib/Material.slang

@@ -1,9 +1,41 @@
 import Common;
 import BRDF;
 import MaterialParameter;
+import Scene;
 
 //interface IMaterial
 //{
 //	associatedtype BRDF : IBRDF;
 //	BRDF prepare(MaterialParameter input);
 //};
+
+layout(set=4, binding=0)
+Texture2D textureArray[];
+layout(set=4, binding=1)
+SamplerState samplerArray[];
+layout(set=4, binding=2)
+StructuredBuffer<float> floatArray;
+
+Texture2D getMaterialTextureParameter(uint index)
+{
+	return textureArray[pOffsets.textureOffset + index];
+}
+
+SamplerState getMaterialSamplerParameter(uint index)
+{
+	return samplerArray[pOffsets.samplerOffset + index];
+}
+
+float getMaterialFloatParameter(uint index)
+{
+	return floatArray[pOffsets.floatOffset + index];
+}
+
+float3 getMaterialVectorParameter(uint index)
+{
+	return float3(
+		floatArray[pOffsets.floatOffset + index],
+		floatArray[pOffsets.floatOffset + index + 1],
+		floatArray[pOffsets.floatOffset + index + 2]
+	);
+}