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我正在繪製一個框架與鐘擺懸掛它，鐘擺有紋理應用，但框架沒有紋理。當我同時顯示我得到 
opengl多個對象，紋理和非紋理，artifacting
但是，當我只渲染擺錘他們正確繪製和我得到
我不確定這是爲什麼。我把擺擺了起來，紋理似乎映射到框架的頂點。這裏是VAO decleration
// Create a vertex array object
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
// Create and initialize two buffer objects
glGenBuffers(2, buffers);
//one buffer for the vertices and colours
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]);
glBufferData(GL_ARRAY_BUFFER, numFPointBytes + numVertexColourBytes,NULL, GL_STATIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, numFPointBytes, fPoints);
glBufferSubData(GL_ARRAY_BUFFER, numVertexPositionBytes, numVertexColourBytes, frameVertexColours);
//one buffer for the indices
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(frameIndices),frameIndices, GL_STATIC_DRAW);
// set up vertex arrays
GLuint fVPosition = glGetAttribLocation(program, "vPosition");
glEnableVertexAttribArray(fVPosition);
glVertexAttribPointer(fVPosition, 4, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(0));
GLuint fVColor = glGetAttribLocation(program, "vColor");
glEnableVertexAttribArray(fVColor);
glVertexAttribPointer(fVColor, 4, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(numVertexPositionBytes));
glBindVertexArray(0);
glGenVertexArrays(2, &pVao);
glBindVertexArray(pVao);
// Create and initialize two buffer objects
glGenBuffers(1, pBuffers);
//glBufferSubData(GL_ARRAY_BUFFER, numPVertexPositionBytes, numPVertexColourBytes, pCols);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, pBuffers[0]);
glEnableVertexAttribArray(0);
glBufferData(GL_ELEMENT_ARRAY_BUFFER,numPVertexPositionBytes+ numPVertexColourBytes+numTexCoordBytes, NULL, GL_STATIC_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, numPVertexPositionBytes, pendulumVertexPos);
glBufferSubData(GL_ARRAY_BUFFER, numPVertexPositionBytes, numPVertexColourBytes, pCols);
glBufferSubData(GL_ARRAY_BUFFER, numPVertexPositionBytes+numPVertexColourBytes, numTexCoordBytes, texCoords);
// set up vertex arrays
GLuint pVPosition = glGetAttribLocation(program, "vPosition");
glEnableVertexAttribArray(pVPosition);
glVertexAttribPointer(pVPosition, 4, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(0));
GLuint pVColor = glGetAttribLocation(program, "vColor");
glEnableVertexAttribArray(pVColor);
glVertexAttribPointer(pVColor, 4, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(numPVertexPositionBytes));
GLuint vTexCoord = glGetAttribLocation(program, "vTexCoord");
glEnableVertexAttribArray(vTexCoord);
glVertexAttribPointer(vTexCoord, 2, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(numPVertexPositionBytes+numPVertexColourBytes));
和顯示
void
display(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
modelViewStack.loadIdentity();
modelViewStack.pushMatrix();
glDisable(GL_TEXTURE_2D);
modelViewStack.lookAt(radius*sin(theta)*cos(phi),
radius*sin(theta)*sin(phi),
radius*cos(theta),
0.0,0.0,0.0,
0.0,1.0,0.0);
modelViewStack.rotatef(rotate,0.0,1.0,0.0);
glUniformMatrix4fv(modelView, 1, GL_FALSE, modelViewStack.getMatrixf());
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]);
glBufferSubData(GL_ARRAY_BUFFER, 0, numVertexPositionBytes, frameVertexPositions);
glBufferSubData(GL_ARRAY_BUFFER, numVertexPositionBytes, numVertexColourBytes, frameVertexColours);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]);
//Indexing into vertices we need to use glDrawElements
glDrawElements(GL_TRIANGLES, NumFIndices, GL_UNSIGNED_BYTE, 0);
modelViewStack.popMatrix();
lineScale = 1.0/8.0;
pendulumScale = 1.0/8.0;
for(int i = 0; i<NumPendulums; i++){
if(!active[i]){
currentTheta[i] = 0.0;
}
modelViewStack.loadIdentity();
modelViewStack.pushMatrix();
glEnable(GL_TEXTURE_2D);
modelViewStack.lookAt(radius*sin(theta)*cos(phi),
radius*sin(theta)*sin(phi),
radius*cos(theta),
0.0,0.0,0.0,
0.0,1.0,0.0);
modelViewStack.scalef(pendulumScale,pendulumScale,pendulumScale);
modelViewStack.rotatef(currentTheta[i],0.0,0.0,1.0);
modelViewStack.rotatef(rotate,0.0,1.0,0.0);
modelViewStack.translatef(dhVals[i][1],dhVals[i][4],0.0);
glUniformMatrix4fv(modelView, 1, GL_FALSE, modelViewStack.getMatrixf());
glBindVertexArray(pVao);
glBindBuffer(GL_ARRAY_BUFFER, pBuffers[0]);
glDrawArrays(GL_TRIANGLES,0,NumPVertices);
glBindVertexArray(0);
glDisable(GL_TEXTURE_2D);
modelViewStack.popMatrix();
modelViewStack.loadIdentity();
modelViewStack.pushMatrix();
modelViewStack.lookAt(radius*sin(theta)*cos(phi),
radius*sin(theta)*sin(phi),
radius*cos(theta),
0.0,0.0,0.0,
0.0,1.0,0.0);
modelViewStack.rotatef(currentTheta[i],0.0,0.0,1.0);
modelViewStack.rotatef(rotate,0.0,1.0,0.0);
modelViewStack.scalef(pendulumScale,lineScale,pendulumScale);
modelViewStack.translatef(dhVals[i][1],0.0,0.0);
glUniformMatrix4fv(modelView, 1, GL_FALSE, modelViewStack.getMatrixf());
glEnableVertexAttribArray(0);
glBindVertexArray(lineVao);
glDrawArrays(GL_LINES,0,NumLVertices);
glBindVertexArray(0);
modelViewStack.popMatrix();
float temp = changeAngle(currentTheta[i], dhVals[i][5], dhVals[i][6], dhVals[i][7], i);
currentTheta[i] = temp;
lineScale+=0.09;
}
projectionStack.loadIdentity();
projectionStack.ortho(-20.0,20.0,-20.0,10.0,-20.0,20.0);
calculateLighting(fPoints,frameVertexColours,NumFSides,6);
calculateLighting(pPoints,pCols,NumPSides,6);
glUniformMatrix4fv(projection, 1, GL_FALSE, projectionStack.getMatrixf());
glutSwapBuffers();
}
這是保持verteces問題還是別的什麼？