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Anuken
2019-01-27 23:26:07 -05:00
parent db2e6b6973
commit e9a82652a0
44 changed files with 1800 additions and 1838 deletions
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core/assets/shaders/shadow.fragment Normal file
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#ifdef GL_ES
precision mediump float;
precision mediump int;
#endif
#define SPACE 2.0
uniform sampler2D u_texture;
uniform vec4 u_color;
uniform vec2 u_texsize;
uniform float u_scl;
varying vec4 v_color;
varying vec2 v_texCoord;
void main() {
vec2 v = vec2(1.0/u_texsize.x, 1.0/u_texsize.y);
vec4 c = texture2D(u_texture, v_texCoord.xy);
float spacing = SPACE * u_scl;
gl_FragColor = mix(vec4(0.0, 0.0, 0.0, min(c.a, u_color.a)), u_color,
(1.0-step(0.001, texture2D(u_texture, v_texCoord.xy).a)) *
step(0.001,
//cardinals
texture2D(u_texture, v_texCoord.xy + vec2(0, spacing) * v).a +
texture2D(u_texture, v_texCoord.xy + vec2(0, -spacing) * v).a +
texture2D(u_texture, v_texCoord.xy + vec2(spacing, 0) * v).a +
texture2D(u_texture, v_texCoord.xy + vec2(-spacing, 0) * v).a +
//cardinal edges
texture2D(u_texture, v_texCoord.xy + vec2(spacing, spacing) * v).a +
texture2D(u_texture, v_texCoord.xy + vec2(spacing, -spacing) * v).a +
texture2D(u_texture, v_texCoord.xy + vec2(-spacing, spacing) * v).a +
texture2D(u_texture, v_texCoord.xy + vec2(-spacing, -spacing) * v).a +
//cardinals * 2
texture2D(u_texture, v_texCoord.xy + vec2(0, spacing) * v*2.0).a +
texture2D(u_texture, v_texCoord.xy + vec2(0, -spacing) * v*2.0).a +
texture2D(u_texture, v_texCoord.xy + vec2(spacing, 0) * v*2.0).a +
texture2D(u_texture, v_texCoord.xy + vec2(-spacing, 0) * v*2.0).a
));
}