168 lines
6.5 KiB
GLSL
168 lines
6.5 KiB
GLSL
#version 150
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//#extension GL_EXT_gpu_shader4 : enable
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in vec3 view_dir;
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in vec4 view_pos;
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uniform vec3 ambient;
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uniform sampler2D t0, t1, t2, t3, t4, t_pp;
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uniform sampler2D td;
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uniform int gid, lightsCount, shadow_on;
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uniform float z_near, z_far;
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uniform bool firstPass;
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uniform vec2 dt;
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uniform vec4 back_color;
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uniform mat4 mat_proji, mat_view, mat_viewi, mat_viewproji;
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float light_diffuse(int model, vec3 l, vec3 n) {return max(0., dot(l, n));}
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float light_specular(int model, vec3 l, vec3 n, vec3 h, vec3 v, float shininess) {return max(0., pow(dot(n, h), shininess));}
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vec4 pos, lpos, shp;
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vec3 li, si, ldir, halfV, bn, bn2, lwdir;
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vec3 vds, vds2;
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float sh_pow, sh_mul, dist, NdotL, NdotH, spot, ldist, diff, sdist, shadow;
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float getShadow(int light, vec3 view_pos, vec3 dpos) {
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shp = qgl_Light[light].shadowMatrix * vec4(view_pos + dpos, 1);
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shp.z -= z_near / 20.;
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return textureProj(qgl_Light[light].shadow, shp);
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}
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void calcLight(in int index, in vec3 n, in vec3 v, in vec4 v2) {
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lpos = qgl_Light[index].position;
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ldir = lpos.xyz - (pos.xyz * lpos.w);
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ldist = length(ldir);
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ldir = normalize(ldir);
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halfV = normalize(ldir + v);
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NdotL = max(dot(n, ldir), 0.0001);
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NdotH = max(dot(n, halfV), 0.0001);
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spot = step(0., NdotL) * qgl_Light[index].intensity;
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if (qgl_Light[index].endAngle <= 90.) {
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float scos = max(dot(-ldir, qgl_Light[index].direction.xyz), 0.);
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spot *= scos * step(qgl_Light[index].endAngleCos, scos);
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spot *= smoothstep(qgl_Light[index].endAngleCos, qgl_Light[index].startAngleCos, scos);
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//lwdir = mat3(mat_viewi) * qgl_Light[index].direction.xyz;
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//bn = normalize(cross(lwdir, vec3(1, 0, 0)));
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//bn2 = normalize(cross(lwdir, bn));
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float ds = ldist/200.;//max(abs(sdist) / 5000, 0.02);
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//spot *= clamp(1. - sdist, 0, 1);
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vds = ds * bn.xyz;
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vds2 = ds * bn2.xyz;
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float shadow = getShadow(index, pos.xyz, vec3(0)) * 3.;
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shadow += getShadow(index, pos.xyz, vds ) * 2.;
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shadow += getShadow(index, pos.xyz, - vds ) * 2.;
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shadow += getShadow(index, pos.xyz, - vds2 ) * 2.;
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shadow += getShadow(index, pos.xyz, + vds2 ) * 2.;
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/*shadow += getShadow(index, pos.xyz, vds - vds2 ) * 1.5;
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shadow += getShadow(index, pos.xyz, vds + vds2 ) * 1.5;
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shadow += getShadow(index, pos.xyz, - vds - vds2 ) * 1.5;
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shadow += getShadow(index, pos.xyz, - vds + vds2 ) * 1.5;
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shadow += getShadow(index, pos.xyz, vds + vds );
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shadow += getShadow(index, pos.xyz, - vds - vds );
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shadow += getShadow(index, pos.xyz, - vds2 - vds2);
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shadow += getShadow(index, pos.xyz, + vds2 + vds2);
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shadow += getShadow(index, pos.xyz, vds + vds - vds2 );
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shadow += getShadow(index, pos.xyz, - vds - vds - vds2 );
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shadow += getShadow(index, pos.xyz, vds + vds + vds2 );
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shadow += getShadow(index, pos.xyz, - vds - vds + vds2 );
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shadow += getShadow(index, pos.xyz, vds - vds2 - vds2);
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shadow += getShadow(index, pos.xyz, vds + vds2 + vds2);
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shadow += getShadow(index, pos.xyz, - vds - vds2 - vds2);
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shadow += getShadow(index, pos.xyz, - vds + vds2 + vds2);*/
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//shadow += shadow += getShadow(index, pos.xyz, vds+vds2)*10;
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spot *= mix(1., shadow / 11., shadow_on);
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}
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spot /= (qgl_Light[index].constantAttenuation + ldist * (qgl_Light[index].linearAttenuation + ldist * qgl_Light[index].quadraticAttenuation));
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///li += spot * gl_LightSource[index].diffuse.rgb * light_diffuse(0, ldir, n);
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//si += spot * qgl_Light[index].color.rgb * sh_mul * light_specular(0, ldir, n, halfV, v, sh_pow);
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float NdotLs = NdotL*NdotL;
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float NdotHs = NdotH*NdotH;
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float ndlc = (1. - NdotLs) / NdotLs;
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float der = NdotLs * (sh_mul + ndlc);
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diff = 2. / (1. + sqrt(1. + (1. - sh_mul) * ndlc));
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li += spot * qgl_Light[index].color.rgb * diff;// * light_diffuse(0, ldir, n);
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ndlc = (1. - NdotHs) / NdotHs;
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der = NdotHs * (sh_mul + ndlc);
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si += spot * qgl_Light[index].color.rgb * (sh_mul / (der*der) / 3.1416);
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}
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const float _pe = 2.4e-7;
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void main(void) {
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//if (d == 1.) discard;
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ivec2 tc = ivec2(gl_FragCoord.xy);
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float z = texelFetch(td, tc, 0).r;
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if (z == 1.) {
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qgl_FragData[0] = back_color;
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return;
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}
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vec4 v0 = texelFetch(t0, tc, 0),
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v1 = texelFetch(t1, tc, 0),
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v2 = texelFetch(t2, tc, 0),
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v3 = texelFetch(t3, tc, 0),
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v4 = texelFetch(t4, tc, 0);
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z = z + z - 1;
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z = ((_pe - 2.) * z_near) / (z + _pe - 1.); // infinite depth
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vec2 sp = gl_FragCoord.xy * dt * 2 - vec2(1, 1);
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vec3 dc = v0.rgb, n = v1.xyz;
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bn = normalize(vec3(v3.w, v4.zw));
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bn2 = normalize(cross(n, bn));
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float height = v2.w;
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li = qgl_AmbientLight.color.rgb * qgl_AmbientLight.intensity;
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si = vec3(0.);
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/*float posz = z_near * z_far / (texelFetch(td, tc, 0).r * (z_far - z_near) - z_far);
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pos = vec4(sp, 0., 1) * mat_proji;
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pos.xy *= v0.z;
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pos.z = posz;*/
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pos.w = 1;
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pos.xyz = view_dir * z;
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//pos.z = -pos.z;
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//pos.z = posz;
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//pos.xyz += n * height;
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//pos.xyz = v3.xyz;
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//pos = v3;
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//pos = vec4(sp, 0, 1.) * mat_proji;
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//pos *= v0.w;
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//pos.z += 1;
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//pos.xy *= 10.;
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//pos.z = v0.w;
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vec3 v = normalize(-pos.xyz);
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float reflectivity = 0.;
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float specularity = modf(v1.w, reflectivity);
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sh_pow = 1. / max((1. - specularity), 0.0001);
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sh_mul = max(1. - specularity, 0.0001);
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for (int i = 0; i < 8; ++i)
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calcLight(i, n, v, v2);
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// calcLight(0, n, v, v2);
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qgl_FragData[0] = vec4(max(vec3(0), li * dc + si * v2.rgb + v3.rgb + texelFetch(t_pp, tc, 0).rgb), v0.w);
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//qgl_FragData[0].rgb = vec3(length(view_pos.xyz - qgl_Light[1].position.xyz)/3);
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//qgl_FragData[0].rgb = vec3(view_pos.xyz);
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//shd = shd - shp.w;
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/*vec3 fp = pos.xyz;// * lpos.w;
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vec3 _dlp = fp - qgl_Light[0].position.xyz;
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vec3 _ld = qgl_Light[0].direction.xyz;
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float lz = dot(_ld, _dlp);
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vec3 _lt = normalize(cross(_ld, _dlp));
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vec3 _lt2 = normalize(cross(_lt, _dlp));
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float ly = dot(qgl_Light[0].shadowDir0.xyz, normalize(_dlp));
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float lx = dot(qgl_Light[0].shadowDir1.xyz, normalize(_dlp));
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vec3 dd = mat3(mat_viewi)*(normalize(_dlp) - _ld);
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//qgl_FragData[0].rgb = vec3(abs(shp.xy/shp.w)/1,0);
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float Y = dot(_dlp, qgl_Light[0].shadowDir0.xyz) / length(qgl_Light[0].shadowDir0.xyz);
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float X = dot(_dlp, qgl_Light[0].shadowDir1.xyz) / length(qgl_Light[0].shadowDir1.xyz);
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qgl_FragData[0].rgb = vec3(abs((mat3(mat_viewi)*_dlp).x)/100);*/
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//qgl_FragData[0].rgb = vec3(abs(mat3(mat_viewi)* qgl_Light[0].direction.xyz));
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//qgl_FragData[0].rgb = vec3(texture(qgl_Light[0].shadow,shp.xyz/shp.w)/2);
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//qgl_FragData[0].a = 0.;
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}
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