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我想下面這段代碼轉換成使用頂點緩衝區之一:「訪問衝突讀取位置」頂點緩衝區
glBegin (GL_QUADS);
glTexCoord2fv (&_vertex[ci->index_list[7]].uv.x);
glVertex3fv (&_vertex[ci->index_list[7]].position.x);
glVertex3fv (&_vertex[ci->index_list[5]].position.x);
glVertex3fv (&_vertex[ci->index_list[3]].position.x);
glVertex3fv (&_vertex[ci->index_list[1]].position.x);
glEnd();
我的錯誤代碼部分看起來是這樣的:
GLfloat * p = (GLfloat *) malloc(sizeof(GLfloat)*14);
//Memcopies vertices into p pointer
memcpy(&p[counter+0], &_vertex[ci->index_list[7]].uv.x, sizeof(GLfloat)*2);
memcpy(&p[counter+2], &_vertex[ci->index_list[7]].position.x, sizeof(GLfloat)*3);
memcpy(&p[counter+5], &_vertex[ci->index_list[5]].position.x, sizeof(GLfloat)*3);
memcpy(&p[counter+8], &_vertex[ci->index_list[3]].position.x, sizeof(GLfloat)*3);
memcpy(&p[counter+11], &_vertex[ci->index_list[1]].position.x, sizeof(GLfloat)*3);
glGenBuffers(1, &vboId1);
glBindBuffer(GL_ARRAY_BUFFER, vboId1);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat)*14, p, GL_STATIC_DRAW_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
glTexCoordPointer(2, GL_FLOAT, sizeof(GLfloat)*14, (GLfloat*)0);
glVertexPointer(3, GL_FLOAT, 0, 2+(GLfloat*)0);
glDrawArrays(GL_QUADS, 0, 1);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
但是,我在glDrawArrays行上得到了「訪問衝突讀取位置」錯誤。任何想法在這裏可能是錯的?我對OpenGL /圖形非常新,很確定我搞砸了一些明顯的東西。