0
我試圖動態淡入淡出物品,因爲它們顯得更遠。IOS GLKit:動態淡化紋理(OpenGL)
我有這個工作正常,紋理顯示正常,但不褪色。
effect.texture2d0.enabled = GL_TRUE;
effect.texture2d0.envMode = GLKTextureEnvModeReplace;
effect.texture2d0.target = GLKTextureTarget2D;
effect.texture2d0.name = texture.name;
// transparancy
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
然後我改變它(基於幾個堆棧溢出帖子)。使GLKTextureEnvModeModulate或添加glColor4f給我GL錯誤的錯誤:0x0502
effect.texture2d0.enabled = GL_TRUE;
effect.texture2d0.envMode = GLKTextureEnvModeModulate;
effect.texture2d0.target = GLKTextureTarget2D;
effect.texture2d0.name = texture.name;
// transparancy
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); // GL_SRC_ALPHA
glColor4f(0.7, 0.7, 0.7, 0.7);