blob: e8722590802d45269783169b9310a58b5adeea29 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
in vec2 uv_interp;
#ifdef TEXTURE_PAINT_MASK
in vec2 masking_uv_interp;
#endif
out vec4 fragColor;
uniform sampler2D image;
uniform bool imagePremultiplied;
uniform float alpha = 1.0;
uniform bool nearestInterp;
#ifdef TEXTURE_PAINT_MASK
uniform sampler2D maskingImage;
uniform bool maskingImagePremultiplied;
uniform vec3 maskingColor;
uniform bool maskingInvertStencil;
#endif
void main()
{
vec2 uv = uv_interp;
if (nearestInterp) {
vec2 tex_size = vec2(textureSize(image, 0).xy);
uv = (floor(uv_interp * tex_size) + 0.5) / tex_size;
}
vec4 color = texture_read_as_srgb(image, imagePremultiplied, uv);
color.a *= alpha;
#ifdef TEXTURE_PAINT_MASK
vec4 mask = vec4(
texture_read_as_srgb(maskingImage, maskingImagePremultiplied, masking_uv_interp).rgb, 1.0);
if (maskingInvertStencil) {
mask.rgb = 1.0 - mask.rgb;
}
float mask_step = smoothstep(0, 3.0, mask.r + mask.g + mask.b);
mask.rgb *= maskingColor;
color = mix(color, mask, mask_step);
#endif
fragColor = color;
}
|