omar/panopainter
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add stencil alpha control to ui

Browse Source
This commit is contained in:
omigamedev
2017-10-20 10:26:08 +01:00
parent 283e4e2b5c
commit 856628162a
7 changed files with 10 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
engine/app_shaders.cpp
View File

@@ -248,6 +248,7 @@ void App::initShaders()
"uniform mediump vec2 resolution;\n"
"uniform mediump float alpha;\n"
"uniform mediump vec2 stencil_offset;\n"
"uniform mediump float stencil_alpha;\n"
"in mediump vec2 uv;\n"
"in mediump float q;\n"
#ifdef __IOS__
@@ -257,7 +258,7 @@ void App::initShaders()
#endif
"void main(){\n"
" mediump vec2 uv2 = gl_FragCoord.st / resolution;\n"
" mediump float stencil = 1-(texture(tex_stencil, (uv2+stencil_offset) * 5.0).r * 0.9);\n"
" mediump float stencil = 1-(texture(tex_stencil, (uv2+stencil_offset) * 5.0).r * 0.9) * stencil_alpha;\n"
" mediump float brush_alpha = ( 1.0 - texture(tex, uv/q).r ) * alpha;\n"
" mediump vec4 fg = vec4(col.rgb, brush_alpha);\n"
#ifdef __IOS__