c - OpenGL 应用程序中的 GL_Invalid_Operation

Question

我当前正在连接 OpenGL 应用程序并收到GL_INVALID_OPERATION。整个 GL 分散在多个文件中，很难从中创建示例，但我已经使用 apitrace 创建了 OpenGL 跟踪。这是造成错误的一个 block :

glMatrixMode(mode = GL_PROJECTION)
glLoadIdentity()
glViewport(x = 0, y = 0, width = 1190, height = 746)
glOrtho(left = 0, right = 1190, bottom = 0, top = 746, zNear = 0, zFar = 128)
glBegin(mode = GL_QUADS)
glColor4f(red = 0.5, green = 0.5, blue = 0.5, alpha = 1)
glVertex3f(x = 1190, y = 746, z = 0)
glColor4f(red = 0.5, green = 0.5, blue = 0.5, alpha = 1)
glVertex3f(x = 0, y = 746, z = 0)
glColor4f(red = 0.5, green = 0.5, blue = 0.5, alpha = 1)
glVertex3f(x = 0, y = 100, z = 0)
glColor4f(red = 0.5, green = 0.5, blue = 0.5, alpha = 1)
glVertex3f(x = 1190, y = 100, z = 0)
glEnd()
glGetError() = GL_INVALID_OPERATION

有人对此有任何想法吗？

Answer 1

GL_QUADS 自版本 3 起已弃用，自版本 3.1 起已删除。

https://www.khronos.org/opengl/wiki/Primitive#Quads