我正在尝试关注[this] [1]简单教程,但是在达到' glDrawArrays'时出现以下错误:
openGLTest.exe中0x03D7598E(nvoglv32.dll)的未处理异常:0xC0000005:访问冲突读取位置0x00000000。
void createMesh(void) {
float* vertices = new float[18];// Amount of vertices
vertices[0] = -0.5; vertices[1] = -0.5; vertices[2] = 0.0; // Bottom left corner
vertices[3] = -0.5; vertices[4] = 0.5; vertices[5] = 0.0; // Top left corner
vertices[6] = 0.5; vertices[7] = 0.5; vertices[8] = 0.0; // Top Right corner
vertices[9] = 0.5; vertices[10] = -0.5; vertices[11] = 0.0; // Bottom right corner
vertices[12] = -0.5; vertices[13] = -0.5; vertices[14] = 0.0; // Bottom left corner
vertices[15] = 0.5; vertices[16] = 0.5; vertices[17] = 0.0; // Top Right corner
glGenVertexArrays(1, &vaoID[0]); // Create our Vertex Array Object
glBindVertexArray(vaoID[0]); // Bind our Vertex Array Object so we can use it
glGenBuffers(1, vboID); // Generate our Vertex Buffer Object
glBindBuffer(GL_ARRAY_BUFFER, vboID[0]); // Bind our Vertex Buffer Object
glBufferData(GL_ARRAY_BUFFER, 18 * sizeof(GLfloat), vertices, GL_STATIC_DRAW); // Set the size and data of our VBO and set it to STATIC_DRAW
glVertexAttribPointer((GLuint)0, 3, GL_FLOAT, GL_FALSE, 0, 0); // Set up our vertex attributes pointer
glEnableVertexAttribArray(0); // Disable our Vertex Array Object
glBindVertexArray(0); // Disable our Vertex Buffer Object
delete[] vertices; // Delete our vertices from memory
glBindVertexArray(vaoID[0]); // Bind our Vertex Array Object
glDrawArrays(GL_TRIANGLES, 0, 6); // Draw our square
glBindVertexArray(0); // Unbind our Vertex Array Object
}
由于教程是一样的,我对导致它的原因感到茫然!
答案 0 :(得分:4)
在处理OpenGL时,访问冲突读取位置0通常意味着您未正确建立到OpenGL API的挂钩。 GLEW是否在您的代码中正确设置?您是否致电glewInit()
并确认结果为GL_TRUE
?在使上下文变为当前之前或之后调用glewInit()
?验证所有这些事情,它应该解决问题。
答案 1 :(得分:2)
经过多次实验,我通过将第一行更改为:
来解决此问题float vertices[18];
并删除:
delete[] vertices;
答案 2 :(得分:0)
我在使用 glDraw 时遇到了同样的错误。我通过先绑定 VertexArray 然后绑定 IndexBuffer 来修复它