diff options
Diffstat (limited to 'shaders/image.frag.glsl')
| -rw-r--r-- | shaders/image.frag.glsl | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/shaders/image.frag.glsl b/shaders/image.frag.glsl index 2a3c2038..0cc1b2ee 100644 --- a/shaders/image.frag.glsl +++ b/shaders/image.frag.glsl @@ -1,6 +1,9 @@ #version 450 layout(set = 2, binding = 0) uniform sampler2D u_image; +layout(std140, set = 3, binding = 0) uniform UiUniforms { + float background_opacity; +} u_ui; layout(location = 0) in vec2 v_uv; layout(location = 1) in vec2 v_panel_uv; @@ -19,6 +22,9 @@ float cellNoise(uint serial, uint col, uint row) { void main() { vec4 source = texture(u_image, v_uv); + // Keep source coverage for destination subtraction; the pipeline scales + // source alpha by the same opacity through its alpha blend constant. + source.rgb *= clamp(u_ui.background_opacity, 0.0, 1.0); uint effect = v_effect.x & 0x7fffffffu; bool oldLayer = (v_effect.x & 0x80000000u) != 0u; float progress = clamp(uintBitsToFloat(v_effect.y), 0.0, 1.0); |