invalid operation after glUseProgram

[Relic]

>>and sizeof(vertexarray)=4. because vertexarray is a pointer.<<

Ok, I was mislead on the array thing because of the new float[] allocation. Would still be fatal under 64-bit where the pointer size is 8 bytes.

[destiny]

Thank you! I traced my program.
float *VertexArray=new float[ 1310]
glBufferData(GL_ARRAY_BUFFER, 5240,VertexArray, GL_STATIC_DRAW);
glDrawArrays(GL_TRIANGLE_FAN,0,655)
Maybe it's not because the length of arrays.
I tried vertex at a time,still,when it came to glEnd ,invalid operation.I'm so confused. Maybe it's because of glcalllist above.

[destiny]

I seemed to understand what's wrong,but I don't know how to solve the problem.I found my codes are in the display list, the display list is an invalid operation ,So whatever I draw would be wrong

[destiny]

Thank you, Relic! Finally find my problem, before drawing something ,I should give the uniforms.