我想在OpenGL ES“2.0”中结合2D和3D，即使在openGL es 1.0和2.0上有很多问题，但我很难解决这个问题。因此，对于2D我要脱离本教程：http://www.raywenderlich.com/9743/how-to-create-a-simple-2d-iphone-game-with-opengl-es-2-0-and-glkit-part-1和3D我正在使用现有的多维数据集旋转xcode模板...ios opengl es 2.0 2D + 3D组合
我在第二个glDrawArray上获取EXC_BAD_ACCESS（不知何故，它认为原始缓冲区仍然适用？无论如何，在绘制2D纹理之前解除此绑定？）错误与以下渲染函数。它可以工作，如果我禁用行： glEnableVertexAttribArray（GLKVertexAttribPosition）; glVertexAttribPointer（GLKVertexAttribPosition，3，GL_FLOAT，GL_FALSE，24，BUFFER_OFFSET（0））; glEnableVertexAttribArray（GLKVertexAttribNormal）; glVertexAttribPointer（GLKVertexAttribNormal，3，GL_FLOAT，GL_FALSE，24，BUFFER_OFFSET（12））;
发生了什么事？提前致谢。
[代码]
glEnable(GL_DEPTH_TEST);
// glGenVertexArraysOES(1, &_vertexArrayNum);
// glBindVertexArrayOES(_vertexArrayNum);
glGenBuffers(1, &_vertexBufferNum);
glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferNum);
glBufferData(GL_ARRAY_BUFFER, sizeof(gCubeVertexData), gCubeVertexData, GL_STATIC_DRAW);
glEnableVertexAttribArray(GLKVertexAttribPosition);
glVertexAttribPointer(GLKVertexAttribPosition, 3, GL_FLOAT, GL_FALSE, 24, BUFFER_OFFSET(0));
glEnableVertexAttribArray(GLKVertexAttribNormal);
glVertexAttribPointer(GLKVertexAttribNormal, 3, GL_FLOAT, GL_FALSE, 24, BUFFER_OFFSET(12));
glBindVertexArrayOES(0);
float aspect = fabsf(self.view.bounds.size.width/self.view.bounds.size.height);
GLKMatrix4 projectionMatrix = GLKMatrix4MakePerspective(GLKMathDegreesToRadians(65.0f), aspect, 0.1f, 100.0f);
self.effect.transform.projectionMatrix = projectionMatrix;
GLKMatrix4 baseModelViewMatrix = GLKMatrix4MakeTranslation(0.0f, 0.0f, -4.0f);
// baseModelViewMatrix = GLKMatrix4Rotate(baseModelViewMatrix, _rotation, 0.0f, 1.0f, 0.0f);
// Compute the model view matrix for the object rendered with GLKit
// GLKMatrix4 modelViewMatrix = GLKMatrix4MakeTranslation(0.0f, 0.0f, 1.5f);
GLKMatrix4 modelViewMatrix = GLKMatrix4MakeRotation(_rotation, 0, 1, 0);
//modelViewMatrix = GLKMatrix4Rotate(modelViewMatrix, _rotation, 1.0f, 1.0f, 1.0f);
modelViewMatrix = GLKMatrix4Multiply(baseModelViewMatrix, modelViewMatrix);
self.effect.transform.modelviewMatrix = modelViewMatrix;
glClearColor(0.65f, 0.65f, 0.65f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBindVertexArrayOES(_vertexArrayNum);
// Render the object with GLKit
// [self.effect prepareToDraw];
// glDrawArrays(GL_TRIANGLES, 0, 36);
modelViewMatrix = GLKMatrix4MakeScale(2.0f, 2.0f, 2.0f);
projectionMatrix = GLKMatrix4MakeOrtho(0, 480, 0, 320, -1024, 1048);
self.effect.transform.projectionMatrix = projectionMatrix;
self.effect.transform.modelviewMatrix = modelViewMatrix;
[self.effect prepareToDraw];
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
[self.player render];
[/代码]
UPDATE： 添加glEnableClientState（GL_VERTEX_ARRAY）;缠绕在立方体绘图部分......这摆脱了访问错误的不良，但立方体和精灵都没有绘制（除非我注释掉代码部分）...
UPDATE2： 所以问题显然是在我调用glDrawArray来绘制多维数据集（这可以正常工作）之后......我再次调用glDrawArray，如下所示。但不知何故，它仍然试图渲染之前的数组？ // 1 self.effect.texture2d0.name = self.textureInfo.name; self.effect.texture2d0.enabled = YES;
// 2
[self.effect prepareToDraw];
// 3
glEnableVertexAttribArray(GLKVertexAttribPosition);
glEnableVertexAttribArray(GLKVertexAttribTexCoord0);
// 4
long offset = (long)&_quad;
glVertexAttribPointer(GLKVertexAttribPosition, 2, GL_FLOAT, GL_FALSE, sizeof(TexturedVertex), (void *) (offset + offsetof(TexturedVertex, geometryVertex)));
glVertexAttribPointer(GLKVertexAttribTexCoord0, 2, GL_FLOAT, GL_FALSE, sizeof(TexturedVertex), (void *) (offset + offsetof(TexturedVertex, textureVertex)));
// 5
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);