切换不同模块时，显示天地图影像

guoshilong

2023-02-03 dd4c39fb89fb2a2d0795036e61c104eb2d08afee

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uniform sampler2D u_texture;
 
varying vec2 v_textureCoordinates;
 
void main()
{
    vec4 color = texture2D(u_texture, v_textureCoordinates);
    gl_FragColor = czm_gammaCorrect(color);
}