#version 440 layout(location = 0) in vec2 qt_TexCoord0; layout(location = 0) out vec4 fragColor; layout(binding = 1) uniform sampler2D source; void main() { fragColor = vec4(qt_TexCoord0.x, qt_TexCoord0.y, 0, 1) + texture(source, qt_TexCoord0); }