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42 lines
1.1 KiB
Scala
42 lines
1.1 KiB
Scala
$input v_pos, v_view, v_normal, v_texcoord0
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/*
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* Copyright 2013 Milos Tosic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include "../common/common.sh"
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SAMPLER2D(s_texColor, 0);
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SAMPLER2D(s_texStipple, 1);
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uniform vec4 u_stipple;
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vec2 blinn(vec3 _lightDir, vec3 _normal, vec3 _viewDir)
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{
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float ndotl = dot(_normal, _lightDir);
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vec3 reflected = _lightDir - 2.0*ndotl*_normal; // reflect(_lightDir, _normal);
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float rdotv = dot(reflected, _viewDir);
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return vec2(ndotl, rdotv);
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}
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void main()
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{
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vec2 viewport = (u_viewRect.zw - u_viewRect.xy) * vec2(1.0/8.0, 1.0/4.0);
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vec2 stippleUV = viewport*(v_pos.xy*0.5 + 0.5);
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vec4 color = texture2D(s_texColor, v_texcoord0);
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if ( (u_stipple.x - texture2D(s_texStipple, stippleUV).x)*u_stipple.y > u_stipple.z
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|| color.w < 0.5)
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{
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discard;
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}
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vec3 lightDir = vec3(0.0, 0.0, -1.0);
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vec3 normal = normalize(v_normal);
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vec3 view = normalize(v_view);
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vec2 bln = blinn(lightDir, normal, view);
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float l = saturate(bln.y) + 0.12;
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color.xyz = toLinear(color.xyz)*l;
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gl_FragColor = toGamma(color);
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}
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