Original Post
Hi all! Im trying to make an alpha mask with a grayscale checker, see here: http://www.hymedia.ca/ax6/temp/alpha_mask.jpg I ve tried 1000s of combinations but still wont work! glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT); glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_INTERPOLATE_EXT); glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE0_RGB GL_PREVIOUS); glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR); glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE1_RGB, GL_TEXTURE); glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR); glTexEnvf(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_TEXTURE); glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND2_RGB, GL_SRC_COLOR); any help will be welcome! thx [Edited by - golgoth on December 21, 2005 7:58:56 AM]