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// [config]
// expect_result: pass
// glsl_version: 1.10
//
// # NOTE: Config section was auto-generated from file
// # NOTE: 'glslparser.tests' at git revision
// # NOTE: 6cc17ae70b70d150aa1751f8e28db7b2a9bd50f0
// [end config]
/*
* bumpTBN_SH_FP.glsl - ambient, diffuse and specular lighting in tangent space
* with shadow mapping and 4-samples PCF
*
* Simple test GLSL shader
* Copyright (c) 2007 Cesare Tirabassi <norsetto@ubuntu.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
varying vec3 lvec, vvec;
uniform sampler2D colorMap;
uniform sampler2D bumpMap;
uniform sampler2DShadow shadowMap;
const vec2 texmapscale = vec2( 1.0/1024.0, 1.0/1024.0 );
vec4 offset_lookup(sampler2DShadow map, vec4 loc, vec2 offset )
{
return shadow2DProj( map, vec4(loc.xy + offset * texmapscale * loc.w, loc.z, loc.w ) );
}
void main()
{
vec3 lv = normalize(lvec);
vec3 vv = normalize(vvec);
vec3 nv = 2.0*texture2D(bumpMap, gl_TexCoord[0].st).rgb-1.0;
float diff = max(dot(lv, nv), 0.0);
float spec = 0.0;
if (diff != 0.0)
spec = pow( max( dot(-normalize(reflect(lv,nv)), vv), 0.0), 64.0 );
vec4 texture = texture2D(colorMap, gl_TexCoord[0].st);
vec2 offset = mod(gl_FragCoord.xy, 2.0);
offset.y += offset.x;
if ( offset.y > 1.1)
offset.y = 0.0;
vec4 shadow = ( offset_lookup( shadowMap, gl_TexCoord[1], offset+vec2(-1.5, 0.5) ) +
offset_lookup( shadowMap, gl_TexCoord[1], offset+vec2( 0.5, 0.5) ) +
offset_lookup( shadowMap, gl_TexCoord[1], offset+vec2(-1.5, -1.5) ) +
offset_lookup( shadowMap, gl_TexCoord[1], offset+vec2( 0.5, -1.5) ) )*0.25;
// vec4 shadow = shadow2DProj(shadowMap, gl_TexCoord[1]);
gl_FragColor = texture*( shadow*( 0.1 + 0.75 * diff + spec * texture.a ) + 0.2 );
}
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