glDrawArrays崩潰與GLES2

Question

GLuint vBuffer; 
glGenBuffers(1, &vBuffer); 
glBindBuffer(GL_ARRAY_BUFFER, vBuffer); 
int totalSize = sizeof(tempVertexList); 
glBufferData(GL_ARRAY_BUFFER, totalSize, tempVertexList, GL_STREAM_DRAW); 
glDrawArrays(GL_TRIANGLE_STRIP, 0, vertexCount); 

此代碼崩潰，當涉及到glDrawArrays，我失蹤的任何明顯的原因？ vertexCount是4和tempVertexList充滿定義爲

4層頂點結構

typedef struct 
{ 
    float Position[3]; 
    float Colour[4]; 
} Vertex; 

Answer 1

glVertexAttribPointer(positionSlot, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0); 
glVertexAttribPointer(colorSlot, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex), (GLvoid*)(sizeof(float)*3)); 

需求

每個GL_ARRAY_BUFFER改變時被調用，不知道剛剛發現:)