在支持OpenGL 3.1的GPU上运行this sample code时,Pyopengl 3.1.5(Python 3.8和Windows10 Pro-64位)窗口显示一个黑屏
示例代码中缺少一些内容。
1.没有为fragcolor指定颜色。
2.整数值作为glVetex2f()
的输入而不是浮点数提供。
在纠正上述问题并运行代码时,屏幕仍为黑色。
import OpenGL
from OpenGL.GL import *
from OpenGL.GLUT import *
from OpenGL.GLU import *
import io
print("Imports successful!")
w, h = 500,500
def poly_shape():
glBegin(GL_QUADS)
glColor4f(1.0,0.0,0.0,1.0)
glVertex2f(100.0, 100.0)
glVertex2f(200.0, 100.0)
glVertex2f(200.0, 200.0)
glVertex2f(100.0, 200.0)
glEnd()
def showScreen():
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) # Remove everything from screen (i.e. displays all white)
glLoadIdentity() # Reset all graphic/shape's position
poly_shape() # Draw function call
glutSwapBuffers()
#------
glutInit()
glutInitDisplayMode(GLUT_RGBA) # Set the display mode to be colored
glutInitWindowSize(500, 500) # Set the w and h of your window
glutInitWindowPosition(0, 0) # Set the position at which this windows should appear
wind = glutCreateWindow("OpenGL Coding Practice") # Set a window title
glutDisplayFunc(showScreen)
glutIdleFunc(showScreen) # Keeps the window open
glutMainLoop() # Keeps the above created window displaying/running in a loop
在sample code 中,缺少Mvp(模型视图投影)矩阵的代码。将其添加到ShowScreen()函数下时,绘制调用(本例中为方形)将在视口中渲染
相关问题 更多 >
编程相关推荐