replace math_graphics with glm version 1.0.3

libs/glm/test/gtx/gtx_gradient_paint.cpp

@@ -0,0 +1,34 @@
+#define GLM_ENABLE_EXPERIMENTAL
+#include <glm/gtx/gradient_paint.hpp>
+
+static int test_radialGradient()
+{
+	int Error = 0;
+	
+	float Gradient = glm::radialGradient(glm::vec2(0), 1.0f, glm::vec2(1), glm::vec2(0.5));
+	Error += Gradient != 0.0f ? 0 : 1;
+	
+	return Error;
+}
+
+static int test_linearGradient()
+{
+	int Error = 0;
+
+	float Gradient = glm::linearGradient(glm::vec2(0), glm::vec2(1), glm::vec2(0.5));
+	Error += Gradient != 0.0f ? 0 : 1;
+
+	return Error;
+}
+
+int main()
+{
+	int Error = 0;
+
+    Error += test_radialGradient();
+    Error += test_linearGradient();
+    
+	return Error;
+}
+
+