glEnable and glDisable enable and disable various capabilities. Use glIsEnabled or glGet to determine the current setting of any capability. The initial value for each capability with the exception of GL_DITHER and GL_MULTISAMPLE is GL_FALSE.

Mar 9, 2021 · The glEnable and glDisable functions enable and disable various OpenGL graphics capabilities. Use glIsEnabled or glGet to determine the current setting of any capability. Both glEnable and glDisable take a single argument, cap, which can assume one of …

Like most of OpenGL's functionality we can enable blending by enabling GL_BLEND: glEnable (GL_BLEND); Now that we've enabled blending we need to tell OpenGL how it should actually blend.

However, you can create a transparency effect with the blend feature and carefully ordering your primitive data. You might also consider using screen door transparency. An OpenGL application typically enables blending as follows: glEnable (GL_BLEND); glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

Apr 14, 2016 · have you glEnable'd alpha blending? And have you set up your blend parameters? You can't just set the alpha you need to setup various other parameters in OpenGL. glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glEnable( GL_BLEND );

Feb 5, 2021 · glEnable and glDisable enable and disable various capabilities. Use glIsEnabled or glGet to determine the current setting of any capability. The initial value for each capability with the exception of GL_DITHER and GL_MULTISAMPLE is GL_FALSE .

Jun 22, 2013 · glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA); you should assure also that: when creating the particle tex with glTexImage2D, use as format GL_RGBA (or GL_LUMINANCE_ALPHA if you are using gray shaded textures)

Jul 20, 2017 · Blending on all buffers can be enabled or disabled with glEnable and glDisable. When blending is disabled to a buffer, the color from the fragment shader will be written directly to that buffer. When blending is enabled, one of the following blend equations will be used to determine the color written to that buffer.

glEnable and glDisable enable and disable various capabilities. Use glIsEnabled or glGet to determine the current setting of any capability. The initial value for each capability with the exception of GL_DITHER and GL_MULTISAMPLE is GL_FALSE .

Dec 21, 2014 · For what you want the blend function would be dst = src.alpha * src + (1 - src.alpha) * dst. The OpenGL call to set this up would be glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) . This function is also known as the mix function.