GLUT程序崩溃，没有任何异常

Question

我正在学习GLSL并尝试编写自己的光线追踪着色器。我使用Python与PyOpenGL + GLUT。这通常是完美的工作，但是当我增加射线的数量时，跟踪程序在glutSwitchBuffers操作上崩溃。没有错误信息，调试器中没有异常，它只是在应用程序经历高负载时关闭(大约每帧2000毫秒)。我现在不能上传我的代码，所以我希望任何人都可以给一个提示或建议至少

from random import random
from typing import Any
from OpenGL.GL import * 
from OpenGL.GLU import * 
from OpenGL.GLUT import *
import numpy as np
import time
import win32api
from PIL import Image
import sys

class RayTracing:
def __init__(self):
self.start = time.time()
self.cam_x = 0
self.cam_y = 0
self.cam_z = 0
self.cam_rot_x = 0
self.cam_rot_y = 0
self.cam_rot_z = 0
self.save = False
self.samples = 25
glutInit(sys.argv)
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB) 
glutInitWindowSize(1920, 1080)
glutCreateWindow(b'Ray Tracing')
glutFullScreen()
glutDisplayFunc(self.draw)
glutIdleFunc(self.draw)
with open('./rtx.frag', 'r') as shader_file:
shader = self.create_shader(GL_FRAGMENT_SHADER, shader_file.read())
self.program = glCreateProgram()
glAttachShader(self.program, shader)
glLinkProgram(self.program)
glUseProgram(self.program)
self.width = glutGet(GLUT_WINDOW_WIDTH)
self.height = glutGet(GLUT_WINDOW_HEIGHT)
location = glGetUniformLocation(self.program,'WindowSize')
glUniform2f(location, self.width, self.height)
glutKeyboardFunc(self.catch_keyboard)
glutSpecialFunc(self.specialKeys)
glutPassiveMotionFunc(self.mouse)
glutSetCursor(GLUT_CURSOR_NONE)

def draw(self):
location = glGetUniformLocation(self.program,'samples')
glUniform1i(location, self.samples)
location = glGetUniformLocation(self.program,'time')
glUniform1f(location, self.start - time.time())
location = glGetUniformLocation(self.program,'camera_pos')
glUniform3f(location, self.cam_x, self.cam_y, self.cam_z)
location = glGetUniformLocation(self.program,'camera_rot')
glUniform3f(location, self.cam_rot_x, self.cam_rot_y, self.cam_rot_z)
location = glGetUniformLocation(self.program,'seed_1')
glUniform2f(location, random(), random())
location = glGetUniformLocation(self.program,'seed_2')
glUniform2f(location, random(), random())
glClear(GL_COLOR_BUFFER_BIT)
glRecti(-1, -1, 1, 1)
glutSwapBuffers()  # Crashes on this line
def create_shader(self, shader_type, source):
shader = glCreateShader(shader_type)
glShaderSource(shader, source)
glCompileShader(shader)
return shader
def catch_keyboard(self, key, x, y):
if key == b'w':  # 87
self.cam_x += 1
if key == b's':  # 83
self.cam_x -= 1
if key == b'a':  # 65
self.cam_y -= 1
if key == b'd':  # 68
self.cam_y += 1
if key == b'e':  # 16
self.cam_z += 1
if key == b'q':  # 17
self.cam_z -= 1
def specialKeys(self, key, x, y):
if key == GLUT_KEY_END:
self.samples = 2500
self.save = True
glutHideWindow()
def mouse(self, x, y):
dx = 1920 / 2 - x
dy = 1080 / 2 - y
self.cam_rot_z += dy / 1080
self.cam_rot_y += -dx / 1920
win32api.SetCursorPos((int(1920 / 2), int(1080 / 2)))
def run(self):
glutMainLoop()
rtx = RayTracing()
rtx.run()

Answer 1

好的，我自己使用BDL注释找到解决方案。当显卡渲染帧超过2秒时，Windows就会终止这个进程。这被称为TDL超时。当您需要进行复杂的计算时，有两种方法可以解决问题:

1. 增加TDL超时点击(不推荐)
2. 将你的样本分成几个小样本，然后调用glFlush或类似的smith逐个计算它们。