你必须自己混合颜色:
计算 0 和 1 之间的混合因子并混合颜色
float blend = lifeTime / maxLifeTime;
float red = (destRed * blend) + (srcRed * (1.0 - blend));
float green = (destGreen * blend) + (srcGreen * (1.0 - blend));
float blue = (destBlue * blend) + (srcBlue * (1.0 - blend));
问候罗恩