Textures_练习一

修改片段着色器，仅让笑脸图案朝另一个方向看

 1 #version 330 core
 2 out vec4 FragColor;
 3 
 4 in vec3 ourColor;
 5 in vec2 TexCoord;
 6 
 7 uniform sampler2D ourTexture1;
 8 uniform sampler2D ourTexture2;
 9 
10 void main()
11 {
12     FragColor = mix(texture(ourTexture1, TexCoord), texture(ourTexture2, vec2(1.0 - TexCoord.x, TexCoord.y)), 0.2);
13 }

View Code

将顶点和纹理坐标的对应关系改变一下即可，左上对应右上，右上对应左上....，换成表达式就是1.0 - TexCoord.x

2019/11/27