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all blending modes for pattern and dual brush

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omigamedev
2019-02-22 02:26:25 +01:00
parent 39ee7289c5
commit 876c002616
11 changed files with 75 additions and 21 deletions
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4
data/shaders/stroke.glsl
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@@ -22,6 +22,7 @@ void main()
#include "include/ext-fb-fetch.glsl"
#include "include/rand.glsl"
#include "include/color.glsl"
#include "include/blend-stroke.glsl"
uniform mediump sampler2D tex;
uniform mediump sampler2D tex_bg;
@@ -41,6 +42,7 @@ uniform mediump float pattern_contr;
uniform mediump float pattern_depth;
uniform mediump vec2 pattern_offset;
uniform mediump bool pattern_invert;
uniform mediump int patt_blend_mode;
in mediump vec2 uv;
in mediump vec2 uv_2;
@@ -68,7 +70,7 @@ void main()
patt = brightness1(patt, 1.0 - pattern_bright);
if (pattern_contr != 0.5)
patt = contrast1(patt, pattern_contr);
fg.a = mix(fg.a, fg.a * patt, pattern_depth);
fg.a = blend_stroke(fg.a, patt, pattern_depth, patt_blend_mode);
}
#if defined(GL_EXT_shader_framebuffer_fetch)