ba1e9445ee
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5025 fc73d0e0-1445-4013-8a0c-d673dee63da5
59 lines
1.3 KiB
GLSL
59 lines
1.3 KiB
GLSL
!!permu BUMP
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!!permu SKELETAL
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!!cvarf r_glsl_offsetmapping_scale
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//light pre-pass rendering (defered lighting)
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//this is the initial pass, that draws the surface normals and depth to the initial colour buffer
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#include "sys/defs.h"
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#if defined(OFFSETMAPPING)
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varying vec3 eyevector;
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#endif
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varying vec3 norm, tang, bitang;
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#if defined(BUMP)
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varying vec2 tc;
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#endif
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#ifdef VERTEX_SHADER
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#include "sys/skeletal.h"
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void main()
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{
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#if defined(BUMP)
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gl_Position = skeletaltransform_nst(norm, tang, bitang);
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tc = v_texcoord;
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#else
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gl_Position = skeletaltransform_n(norm);
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#endif
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#if defined(OFFSETMAPPING)
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vec3 eyeminusvertex = e_eyepos - v_position.xyz;
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eyevector.x = dot(eyeminusvertex, v_svector.xyz);
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eyevector.y = dot(eyeminusvertex, v_tvector.xyz);
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eyevector.z = dot(eyeminusvertex, v_normal.xyz);
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#endif
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}
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#endif
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#ifdef FRAGMENT_SHADER
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#ifdef OFFSETMAPPING
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#include "sys/offsetmapping.h"
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#endif
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void main()
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{
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//adjust texture coords for offsetmapping
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#ifdef OFFSETMAPPING
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vec2 tcoffsetmap = offsetmap(s_normalmap, tc, eyevector);
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#define tc tcoffsetmap
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#endif
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vec3 onorm;
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#if defined(BUMP)
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vec3 bm = 2.0*texture2D(s_normalmap, tc).xyz - 1.0;
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onorm = normalize(bm.x * tang + bm.y * bitang + bm.z * norm);
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#else
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onorm = norm;
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#endif
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gl_FragColor = vec4(onorm.xyz, gl_FragCoord.z);
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}
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#endif
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