Question

我目前正在使用PyOpenGL和PyGame为自上而下的2D侧卷轴编写代码。

下面显示的代码将在窗口中生成2D图像。

添加的图像是背景。我现在想使用OpenGL将sprite添加到后台。换句话说，我想将一个2D图像叠加在另一个上面。我似乎无法找到一个好方法。

import pygame
from pygame.locals import *
from OpenGL.GL import *
from OpenGL.GLU import *
from screenDictionary import *

### Initialize variables ###
gameOn = True
dispWidth = 1920
dispHeight = 1024
bgImg = 'A1_64.png'
bgImg2 = 'HookedFront64.png'
transTuple = (255, 0, 255)
blackTuple = (100, 100, 100)
screenX = 0
screenY = 0

### Initialize display ###
def createDisplay(dispWidth, dispHeight):
    pygame.init()
    screen = pygame.display.set_mode((dispWidth, dispHeight), DOUBLEBUF|OPENGL)
    pygame.display.set_caption('Hooked')
    return screen

def createSurfaces(screen):
    background = pygame.Surface(screen.get_size())
    background.fill(blackTuple)
    sprite = pygame.Surface(screen.get_size())
    sprite.set_colorkey(transTuple)
    return background

def loadScene(bgImg):
    img = pygame.image.load(bgImg)
    textureData = pygame.image.tostring(img, "RGB", 1)
    width = img.get_width()
    height = img.get_height()
    bgImgGL = glGenTextures(1)
    glBindTexture(GL_TEXTURE_2D, bgImgGL)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, textureData)
    glEnable(GL_TEXTURE_2D)

def placeScene():
    glLoadIdentity()
    gluPerspective(90, 1, 0.05, 100)
    glTranslatef(0,0,0)
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)
    glBegin(GL_QUADS)
    glTexCoord2f(0,0)
    glVertex3f(-4,-4,-4)
    glTexCoord2f(0,1)
    glVertex3f(-4,4,-4)
    glTexCoord2f(1,1)
    glVertex3f(4,4,-4)
    glTexCoord2f(1,0)
    glVertex3f(4,-4,-4)
    glEnd()    

screen = createDisplay(dispWidth, dispHeight)  
background = createSurfaces(screen)
mapParams = screenDictionary(screenX, screenY)
bgImg = mapParams[0]
loadScene(bgImg)
loadScene(bgImg2)
loadScene(bgImg)

###Run the game###
while gameOn:
    placeScene()
    pygame.display.flip()
    pygame.time.wait(1)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            gameOn = False

Answer 1

问题解决了。

所做的更改：使用gluOrtho2D代替gluPerspective。使用glVertex2f而不是glVertex3f。

最重要的变化：删除了glClear（GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT） 每次执行时都会清理现场... DUH！还在学习openGL，但是会留下这个以防万一其他人像我一样愚蠢并遇到类似的问题。

将一个2D图像叠加到另一个上？ PyOpenGL？

1 个答案: