fix transform commit shader

src/app_shaders.cpp

@@ -101,6 +101,7 @@ void App::initShaders()
         //"uniform image2D   img_mixer;\n"
         "uniform mediump float alpha;\n"
         "uniform mediump int blend_mode;\n"
+        "uniform mediump vec2 resolution;\n"
         "uniform bool lock;\n"
         "uniform bool mask;\n"
         "in mediump vec3 uv;\n"
@@ -139,7 +140,7 @@ void App::initShaders()
         "}\n"
     
         "void main(){\n"
-        "   mediump vec4 base = texture(tex, uv.xy);\n"
+        "   mediump vec4 base = texture(tex, gl_FragCoord.st / resolution);\n"
         "   mediump vec4 stroke = texture(tex_stroke, uv.xy);\n"
         "   stroke.a = mask ? stroke.a * alpha * blur(tex_mask, uv.xy).r : stroke.a * alpha;\n"