优化128mb EXR图像

Question

<{1}}中的initializeGL中的

：
我正在使用QGLWidget

加载.exr图像（128mb）4000x2000

imageio.imread

<{1}}中的from imageio import imread img_array = imread("c:/sample.exr") self.textureID = glGenTextures(1) 中的

：
我使用paintGL和QGLWidget绘制单个四边形，然后将纹理输入glBegin(GL_QUADS)并将其绑定到我之前创建的四边形。

glEnd()

加载图像或代码本身没有任何问题，一切都运行正常，但我面临性能问题，导航场景开始滞后，我认为是因为图像的大小。

有什么方法可以缩小尺寸吗？还是提高它的表现？

注意：即使图像为glTexImage2D我也只显示为glBindTexture(GL_TEXTURE_2D, self.textureID) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB32F, 1920, 1080, 0, GL_RGBA, GL_FLOAT, img_array) ，这意味着有0.4545伽玛乘法，我不知道这是否影响性能但想指出来。

提前致谢。

更新：
这是代码：

numpy.float32

我试过这个：
我将GL_RGBA移动到import os from PySide.QtGui import QColor from PySide.QtOpenGL import QGLWidget from imageio import imread from OpenGL.GL import * from OpenGL.GLU import * from engine.nodes import (ImageNode, NodeType, CubeNode, Vector3) class QImageProcessor(QGLWidget): def __init__(self, parent=None): super(QImageProcessor, self).__init__(parent) self.model = list() self.zoomVal = 1.2 self.local_translate = (0.0, 0.0, 0.0) self.local_scale = (1.0, 1.0, 1.0) self.xRot = 0 self.yRot = 0 self.zRot = 0 def initializeGL(self): self.qglClearColor(QColor.fromCmykF(0.0, 0.1, 0.0, 0.882)) glViewport( 0, 0, self.width(), self.height()) glEnable(GL_TEXTURE_2D) glEnable(GL_CULL_FACE) glEnable(GL_MULTISAMPLE) glEnable(GL_LINE_SMOOTH, GL_LINE_WIDTH, GL_ALIASED_LINE_WIDTH_RANGE) glShadeModel(GL_FLAT) glEnable(GL_DEPTH_TEST) glHint(GL_LINE_SMOOTH_HINT, GL_NICEST) glDepthRange (0.1, 1.0) # adding images image1 = "c:/sample.exr" new_image1 = ImageNode(image1) new_image1.TextureID = glGenTextures(1) new_image1.Data = imread(image1, format='.exr') self.model.append(new_image1) image2 = "c:/sample2.jpg" new_image2 = ImageNode(image2) new_image2.TextureID = glGenTextures(1) new_image2.Data = imread(image2, format='.jpg') self.model.append(new_image2) def paintGL(self): glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) gluOrtho2D(-self.zoomVal, +self.zoomVal, -self.zoomVal, +self.zoomVal) glLoadIdentity() glTranslated(*self.local_translate) glRotated(self.xRot / 16.0, 1.0, 0.0, 0.0) glRotated(self.yRot / 16.0, 0.0, 1.0, 0.0) glRotated(self.zRot / 16.0, 0.0, 0.0, 1.0) glScalef(*self.local_scale) genList = glGenLists(1) glNewList(genList, GL_COMPILE) for node in self.model: vertices = node.Vertices # list of vertices edges = node.Edges # list of edges face = node.Face # list of faces texcoords = node.TextureCoordinates # list of texture coordinates glPushAttrib(GL_ALL_ATTRIB_BITS) glPolygonMode(GL_FRONT, GL_FILL) glPixelStorei(GL_UNPACK_ALIGNMENT,1) glBindTexture(GL_TEXTURE_2D, node.TextureID) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR) glTexImage2D(GL_TEXTURE_2D, 0, node.InternalFormat, node.Width, node.Height, 0, node.Format, node.Type, node.Data) # face and UV glBegin(GL_QUADS) self.qglColor(QColor(255,255,255)) for vertex in face: glVertex3fv(vertices[vertex]) glTexCoord2f(texcoords[vertex][0], texcoords[vertex][1]) glEnd() glPopAttrib() glEndList() glCallList(genList) 函数，将其绑定一次然后将其绑定到0：

glTexCoord2f

然后在initializeGL再绑定它，

image2 = "c:/sample2.jpg"
new_image2 = ImageNode(image2)
new_image2.TextureID = glGenTextures(1)
new_image2.Data = imread(image2, format='.jpg')
glTexImage2D(GL_TEXTURE_2D, 0, new_image2.InternalFormat, new_image2.Width, new_image2.Height, 0, new_image2.Format, new_image2.Type, new_image2.Data)
glBindTexture(GL_TEXTURE_2D, new_image2.TextureID)
glBindTexture(GL_TEXTURE_2D, 0)
self.model.append(new_image2)

但它没有显示纹理，不确定我是否遗漏了某些东西。