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hide cursor on canvas, add mouse focus event, brush preview solid when small

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omigamedev
2019-03-06 20:39:27 +01:00
parent 5eba9f1227
commit 3296de98cc
15 changed files with 194 additions and 24 deletions
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33
data/shaders/stroke-preview.glsl
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@@ -16,6 +16,8 @@ void main()
uniform sampler2D tex;
uniform mediump vec4 col;
uniform mediump float alpha;
uniform bool draw_outline;
in mediump vec2 uv;
out mediump vec4 frag;
@@ -23,16 +25,23 @@ out mediump vec4 frag;
void main()
{
mediump float stroke = 1.0 - texture(tex, uv).r;
int zero_count = 0;
if (textureOffset(tex, uv, ivec2(-1, -1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(-1, 0)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(-1, +1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2( 0, -1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2( 0, 0)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2( 0, +1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(+1, -1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(+1, 0)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(+1, +1)).r > 0.99) zero_count++;
mediump float edge = (zero_count > 1 && zero_count < 9) ? 0.75 : 0.0;
frag = vec4(col.rgb, edge * (1.0 - float(zero_count) / 9.f));
if (draw_outline)
{
int zero_count = 0;
if (textureOffset(tex, uv, ivec2(-1, -1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(-1, 0)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(-1, +1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2( 0, -1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2( 0, 0)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2( 0, +1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(+1, -1)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(+1, 0)).r > 0.99) zero_count++;
if (textureOffset(tex, uv, ivec2(+1, +1)).r > 0.99) zero_count++;
mediump float edge = (zero_count > 1 && zero_count < 9) ? 0.75 : 0.0;
frag = vec4(col.rgb, edge * (1.0 - float(zero_count) / 9.f));
}
else
{
frag = vec4(col.rgb, stroke * alpha);
}
}