2020-03-14 17:58:12 +01:00
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"global": "vec3 blend3d_normal(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*c1 + (1.0-opacity)*c2;\n}\n\nvec3 blend3d_multiply(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*c1*c2 + (1.0-opacity)*c2;\n}\n\nvec3 blend3d_screen(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*(1.0-(1.0-c1)*(1.0-c2)) + (1.0-opacity)*c2;\n}\n\nfloat blend3d_overlay_f(float c1, float c2) {\n\treturn (c1 < 0.5) ? (2.0*c1*c2) : (1.0-2.0*(1.0-c1)*(1.0-c2));\n}\n\nvec3 blend3d_overlay(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*vec3(blend3d_overlay_f(c1.x, c2.x), blend3d_overlay_f(c1.y, c2.y), blend3d_overlay_f(c1.z, c2.z)) + (1.0-opacity)*c2;\n}\n\nvec3 blend3d_hard_light(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*0.5*(c1*c2+blend3d_overlay(c1, c2, 1.0)) + (1.0-opacity)*c2;\n}\n\nfloat blend3d_soft_light_f(float c1, float c2) {\n\treturn (c2 < 0.5) ? (2.0*c1*c2+c1*c1*(1.0-2.0*c2)) : 2.0*c1*(1.0-c2)+sqrt(c1)*(2.0*c2-1.0);\n}\n\nvec3 blend3d_soft_light(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*vec3(blend3d_soft_light_f(c1.x, c2.x), blend3d_soft_light_f(c1.y, c2.y), blend3d_soft_light_f(c1.z, c2.z)) + (1.0-opacity)*c2;\n}\n\nfloat blend3d_burn_f(float c1, float c2) {\n\treturn (c1==0.0)?c1:max((1.0-((1.0-c2)/c1)),0.0);\n}\n\nvec3 blend3d_burn(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*vec3(blend3d_burn_f(c1.x, c2.x), blend3d_burn_f(c1.y, c2.y), blend3d_burn_f(c1.z, c2.z)) + (1.0-opacity)*c2;\n}\n\nfloat blend3d_dodge_f(float c1, float c2) {\n\treturn (c1==1.0)?c1:min(c2/(1.0-c1),1.0);\n}\n\nvec3 blend3d_dodge(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*vec3(blend3d_dodge_f(c1.x, c2.x), blend3d_dodge_f(c1.y, c2.y), blend3d_dodge_f(c1.z, c2.z)) + (1.0-opacity)*c2;\n}\n\nvec3 blend3d_lighten(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*max(c1, c2) + (1.0-opacity)*c2;\n}\n\nvec3 blend3d_darken(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*min(c1, c2) + (1.0-opacity)*c2;\n}\n\nvec3 blend3d_difference(vec3 c1, vec3 c2, float opacity) {\n\treturn opacity*clamp(c2-c1, vec3(0.0), vec3(1.0)) + (1.0-opacity)*c2;\n}\n",
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