基于Qt的OpenGL可编程管线学习(15)-颜色加深、颜色减淡、想家相减
1、颜色加深
网站建设哪家好,找成都创新互联!专注于网页设计、网站建设、微信开发、成都小程序开发、集团企业网站建设等服务项目。为回馈新老客户创新互联还提供了旌阳免费建站欢迎大家使用!
shader
//颜色加深 uniform sampler2D U_MainTexture; uniform sampler2D U_SubTexture; varying vec2 M_coord; void main() { vec4 blendColor = texture2D(U_SubTexture, M_coord); vec4 baseColor = texture2D(U_MainTexture, M_coord); gl_FragColor = vec4(1.0) - (vec4(1.0) - baseColor) / blendColor; }
效果图
2、颜色减淡
shader
//颜色减淡 uniform sampler2D U_MainTexture; uniform sampler2D U_SubTexture; varying vec2 M_coord; void main() { vec4 blendColor = texture2D(U_SubTexture, M_coord); vec4 baseColor = texture2D(U_MainTexture, M_coord); gl_FragColor = baseColor / (vec4(1.0) - blendColor); }
效果图
3、相加
shader
//相加 uniform sampler2D U_MainTexture; uniform sampler2D U_SubTexture; varying vec2 M_coord; void main() { vec4 blendColor = texture2D(U_SubTexture, M_coord); vec4 baseColor = texture2D(U_MainTexture, M_coord); gl_FragColor = blendColor + baseColor; }
4、相减
shader
//相减 uniform sampler2D U_MainTexture; uniform sampler2D U_SubTexture; varying vec2 M_coord; void main() { vec4 blendColor = texture2D(U_SubTexture, M_coord); vec4 baseColor = texture2D(U_MainTexture, M_coord); gl_FragColor = vec4(baseColor.rgb - blendColor.rgb, 1.0); }
效果图
分享题目:基于Qt的OpenGL可编程管线学习(15)-颜色加深、颜色减淡、想家相减
当前URL:http://lswzjz.com/article/pecjgp.html