hello in 2020 ^^, i'm using immediate mode atm and got issues with transparency when using PVR_TXRFMT_ARGB1555 non twiddled. Alpha information seems ignored , blending is enabled and blendFunc GL_ONE_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA the problem may come from glTexEnvi(GL_TEXTURE_2D, GL_TEXTURE_ENV_...