#version 310 es precision highp float; precision highp int; layout(location = 0) in vec4 v_fragmentColor; layout(location = 1) in vec2 v_texCoord; layout(binding = 0) uniform sampler2D u_tex0; layout(std140, binding = 0) uniform fs_ub { vec4 u_textColor; }; layout(location = 0) out vec4 FragColor; void main() { FragColor = v_fragmentColor * vec4(u_textColor.rgb,// RGB from uniform u_textColor.a * texture(u_tex0, v_texCoord).a// A from texture & uniform ); }