itsmattkc
da3ff98774
Not doing this appeared to corrupt the composited buffer somehow and return a black image if there were two empty texture connections daisychained together on two AlphaOver instances.
34 lines
617 B
GLSL
34 lines
617 B
GLSL
#version 110
|
|
|
|
varying vec2 ove_texcoord;
|
|
|
|
uniform sampler2D base_in;
|
|
uniform sampler2D blend_in;
|
|
uniform bool base_in_enabled;
|
|
uniform bool blend_in_enabled;
|
|
|
|
void main(void) {
|
|
vec4 base_col = texture2D(base_in, ove_texcoord);
|
|
vec4 blend_col = texture2D(blend_in, ove_texcoord);
|
|
|
|
if (!base_in_enabled && !blend_in_enabled) {
|
|
gl_FragColor = vec4(0.0);
|
|
return;
|
|
}
|
|
|
|
if (!base_in_enabled) {
|
|
gl_FragColor = blend_col;
|
|
return;
|
|
}
|
|
|
|
if (!blend_in_enabled) {
|
|
gl_FragColor = base_col;
|
|
return;
|
|
}
|
|
|
|
base_col *= 1.0 - blend_col.a;
|
|
base_col += blend_col;
|
|
|
|
gl_FragColor = base_col;
|
|
}
|