View difference between Paste ID: 1UP5c5d2 and c4emGGXn

 #version 450
 layout(set = 0, binding = 0, std140) uniform UBO
 {
    mat4 MVP;
    vec4 SourceSize; // Not used here, but doesn't hurt
 };
 
 float color_blend(float color_prev, float color_curr, float x)
 {
    float sum = color_curr;
    sum = sum + color_prev;
    return sum / 2.0;
 }
 
 #pragma name Composite blending
 
 #pragma stage vertex
 layout(location = 0) in vec4 Position;
 layout(location = 1) in vec2 TexCoord;
 layout(location = 0) out vec2 vTexCoord;
 void main()
 {
    gl_Position = MVP * Position;
    vTexCoord = TexCoord;
 }
 
 
 #pragma stage fragment
 layout(location = 0) in vec2 vTexCoord;
 layout(location = 0) out vec4 FragColor;
 layout(set = 0, binding = 2) uniform sampler2D Source;
 
 void main()
 {
    vec2 onePixel = vec2(1.0, 1.0) / SourceSize.xy;
    vec3 currentColor = texture(Source, vTexCoord).rgb;
    vec3 prevColor = texture(Source, vTexCoord - vec2(onePixel.x, 0)).rgb;
 
    float r = color_blend(prevColor.r, currentColor.r, vTexCoord.x);
    float g = color_blend(prevColor.g, currentColor.g, vTexCoord.x);
    float b = color_blend(prevColor.b, currentColor.b, vTexCoord.x);
    FragColor = vec4(r, g, b, 1.0);
 }