Sprite Batcher has fields for optional texture/sampler uniform names

include/blah/graphics/batch.h

@@ -48,7 +48,9 @@ namespace Blah
 	{
 	public:
 
-		// The name of the Matrix Uniform in the Shader
+		// The name of the default uniforms to set
+		const char* texture_uniform;
+		const char* sampler_uniform;
 		const char* matrix_uniform;
 
 		// Default Sampler, set on clear

include/blah/graphics/material.h

@@ -65,6 +65,9 @@ namespace Blah
 		// Gets a pointer to the values of the given Uniform, or nullptr if it doesn't exist.
 		const float* get_value(const char* name, i64* length = nullptr) const;
 
+		// Checks if the shader attached to the material has a uniform value with the given name
+		bool has_value(const char* name) const;
+
 		// Returns the internal Texture buffer
 		const Vector<TextureRef>& textures() const;