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fix sdf shader

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This commit is contained in:
Pinchuk Aleksei
2019-08-08 18:47:46 +03:00
parent beb8de2040
commit f9291ae454
1 changed files with 3 additions and 3 deletions
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6
samples/bin/library/sdf_shader.frag
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@@ -14,14 +14,14 @@ varying vec4 v_color;
void main() {
float distance = 1.0 - texture2D(u_texture, v_st0).a;
float alpha = smoothstep(u_char_width + u_char_edge, u_char_width, distance);
float alpha = 1.0 - smoothstep(u_char_width, u_char_width + u_char_edge, distance);
float outline_alpha = smoothstep(u_outline_width + u_outline_edge, u_outline_width, distance);
float outline_alpha = 1.0 - smoothstep(u_outline_width, u_outline_width + u_outline_edge, distance);
float overall_alpha = alpha + (1.0 - alpha) * outline_alpha;
vec4 overall_color = mix(u_outline_color, v_color, alpha / overall_alpha);
float distance_shadow = 1.0 - texture2D(u_texture, v_st0 + u_shadow_offset).a;
float shadow_alpha = smoothstep(u_shadow_width + u_shadow_edge, u_shadow_width, distance_shadow);
float shadow_alpha = 1.0 - smoothstep(u_shadow_width, u_shadow_width + u_shadow_edge, distance_shadow);
vec4 shadow = vec4(u_shadow_color.rgb, shadow_alpha);
gl_FragColor = mix(shadow, overall_color, overall_alpha);