为什么我不能在pyopengl中绘制纹理？ [英] Why can't I draw a texture in pyopengl?

问题描述

我经历了很多教程，但仍然无法弄清楚我做错了什么。如果我禁用纹理，它会正确绘制一个白色立方体，但是当我启用纹理时，它不会绘制任何东西（或者黑色正方形与背景相同）。我唯一怀疑的是GL_INT，因为到目前为止我只在项目中使用了无符号字节。在此先感谢。



编辑：我的窗口是RGB



这是我的代码：

 self.texture = glGenTextures（1）
 glPixelStorei（GL_UNPACK_ALIGNMENT，1）
 glPixelStorei（GL_PACK_ALIGNMENT，1）
 glBindTexture（GL_TEXTURE_2D，self.texture）
 pix = [255,255,255,0,0,055,555,255,0,0,0] 
 glMatrixMode（GL_PROJECTION）
 glLoadIdentity（）
 glOrtho （0.0,640,480,0.0,0.0,100.0）
 glMatrixMode（GL_MODELVIEW）
 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）
 glTexEnvf（GL_TEXTURE_ENV，GL_TEXTURE_ENV_MODE，GL_DECAL）
 glTexImage2D（GL_TEXTURE_2D，0,3,2,2,0，GL_RGB ，GL_INT，pix）
 glEnable（GL_TEXTURE_2D）
 glDisable（GL_LIGHTING）
 glBegin（GL_QUADS）; 
 glTexCoord2i（0,0）; glVertex2i（100,100）
 glTexCoord2i（0,1）; glVertex2i（100,200）
 glTexCoord2i（1,1）; glVertex2i（200,200）
 glTexCoord2i（1,0）; glVertex2i（200,100）
 glEnd（）
 glutSwapBuffers（）
 

解决方案

好的，我通过反复试验发现阵列需要是3D。这个数组适合我（3 * 4 * 3维）我用glTexImage2Df：



pix = [[[1.0,1.0,0.0]，[0.0， 0.0,0.0]，[1.0,1.0,1.0]，[0.0,0.0,0.0]]，[[1.0,1.0,1.0]，[0.0,0.0,0.0]，[1.0,1.0,1.0]，[0.0， 0.0,0.0]]，[[1.0,1.0,1.0]，[0.0,0.0,0.0]，[1.0,1.0,1.0]，[0.0,0.0,0.0]]]

I've gone through many tutorials and still I can't figure out what I'm doing wrong. If I disable textures it correctly draws a white cube but when I enable textures it draws nothing (or black square same color as background). The only thing I suspect is GL_INT because up to this point I have only been using unsigned byte in my projects. Thanks in advance.

Edit: my window is RGB

Here is my code:

self.texture = glGenTextures(1)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
glPixelStorei(GL_PACK_ALIGNMENT, 1)
glBindTexture(GL_TEXTURE_2D, self.texture)
pix=[255,255,255,0,0,0,255,255,255,0,0,0]
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, 640, 480, 0.0, 0.0, 100.0)
glMatrixMode(GL_MODELVIEW)
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)
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL)
glTexImage2D(GL_TEXTURE_2D, 0, 3, 2, 2, 0, GL_RGB, GL_INT, pix)
glEnable(GL_TEXTURE_2D)
glDisable( GL_LIGHTING)
glBegin(GL_QUADS);
glTexCoord2i(0, 0); glVertex2i(100, 100)
glTexCoord2i(0, 1); glVertex2i(100, 200)
glTexCoord2i(1, 1); glVertex2i(200, 200)
glTexCoord2i(1, 0); glVertex2i(200, 100)
glEnd()
glutSwapBuffers()

解决方案

Ok, I found out through trial and error that the array needs to be 3D. This array worked for me (3*4*3 dimensions) I used glTexImage2Df with this:

pix=[[[1.0,1.0,0.0],[0.0,0.0,0.0],[1.0,1.0,1.0],[0.0,0.0,0.0]],[[1.0,1.0,1.0],[0.0,0.0,0.0],[1.0,1.0,1.0],[0.0,0.0,0.0]],[[1.0,1.0,1.0],[0.0,0.0,0.0],[1.0,1.0,1.0],[0.0,0.0,0.0]]]

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