In which language you are programing ? If you are programming in C then &Normal[i].x should be okay. Remark: You define a 1D array TGLCoord Normals [GridSize]; and try to access it like a 2D array => Normals[i, j+1]. I think this is valid in C# but in C you must write Normals[i][j+1]. So try something like this :
hey, even it works now, but still nothing to appear/show in GL_QUAD_STRIP? i had try to change it become a triangle (GL_TRIANGLES), and it is appears. Can anyone let me know why. Thanks…