65 lines
1.8 KiB
GLSL
65 lines
1.8 KiB
GLSL
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#include webgl_header.vs
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uniform bool isPicking;
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attribute vec4 a_Vertex;
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attribute vec3 a_Normal;
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attribute vec4 a_Color;
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attribute float a_Accessibility; /* This is for ambient occlusion, 1.0 by default */
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varying vec3 packed_data_0 ;
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varying vec4 packed_data_1 ;
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varying vec4 packed_data_2 ;
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varying vec4 packed_data_4 ;
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//varying vec3 N;
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#define NORMAL packed_data_0
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#ifdef PURE_OPENGL_ES_2
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varying vec4 COLOR;
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#else
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// using the built-in allows to use glShadeModel
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#define COLOR gl_FrontColor
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#endif
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//#define fog packed_data_1.w
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#define E 2.718281828459045
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/* this doesn't work for setting fog_color, need to set the values independently */
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//#define fog_color ( packed_data_1.x, packed_data_1.y, packed_data_1.z )
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varying float fog;
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varying vec2 bgTextureLookup;
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uniform bool lighting_enabled;
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uniform float ambient_occlusion_scale;
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uniform int accessibility_mode;
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uniform float accessibility_mode_on;
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void main()
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{
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NORMAL = normalize(g_NormalMatrix * a_Normal);
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vec3 eye_pos = vec3(g_ModelViewMatrix * a_Vertex);
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#ifdef PYMOL_WEBGL_IOS
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gl_PointSize = g_PointSize;
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#endif
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if (isPicking){
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COLOR = a_Color; // no lighting
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} else {
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vec4 COLORa;
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if (accessibility_mode == 1){
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COLORa = vec4(clamp(a_Color.xyz * (1.-(ambient_occlusion_scale*a_Accessibility)), 0., 1.), a_Color.w);
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} else if (accessibility_mode == 2){
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COLORa = vec4(a_Color.xyz * cos(90.*radians(clamp(ambient_occlusion_scale*a_Accessibility, 0., 1.))), a_Color.w);
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} else {
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COLORa = vec4(clamp(a_Color.xyz * (1. / (1. + pow(E, 0.5 * ( (ambient_occlusion_scale * a_Accessibility) - 10.)))), 0., 1.), a_Color.w);
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}
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COLOR = mix(a_Color, COLORa, accessibility_mode_on);
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fog = (g_Fog_end + eye_pos.z) * g_Fog_scale;
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}
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gl_Position = g_ProjectionMatrix * g_ModelViewMatrix * a_Vertex;
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bgTextureLookup = (gl_Position.xy/gl_Position.w) / 2.0 + 0.5;
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}
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