a294670bac
Changes output for geometry info node in Eevee to be consistent with Cycles (w/o osl) Before this patch Eevee outputs Z-tangent even for hair. This patch changes it to output hair tangent (growth direction). Hair tangent is impossible to derive otherwise from normal or view direction. Reviewed By: fclem, brecht Differential Revision: https://developer.blender.org/D10841
54 lines
1.4 KiB
GLSL
54 lines
1.4 KiB
GLSL
void node_geometry(vec3 I,
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vec3 N,
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vec3 orco,
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mat4 objmat,
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mat4 toworld,
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vec2 barycentric,
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out vec3 position,
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out vec3 normal,
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out vec3 tangent,
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out vec3 true_normal,
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out vec3 incoming,
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out vec3 parametric,
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out float backfacing,
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out float pointiness,
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out float random_per_island)
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{
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/* handle perspective/orthographic */
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vec3 I_view = (ProjectionMatrix[3][3] == 0.0) ? normalize(I) : vec3(0.0, 0.0, -1.0);
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incoming = -(toworld * vec4(I_view, 0.0)).xyz;
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#if defined(WORLD_BACKGROUND) || defined(PROBE_CAPTURE)
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position = -incoming;
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true_normal = normal = incoming;
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tangent = parametric = vec3(0.0);
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vec3(0.0);
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backfacing = 0.0;
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pointiness = 0.0;
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#else
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position = worldPosition;
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# ifndef VOLUMETRICS
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normal = normalize(N);
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vec3 B = dFdx(worldPosition);
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vec3 T = dFdy(worldPosition);
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true_normal = normalize(cross(B, T));
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# else
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normal = (toworld * vec4(N, 0.0)).xyz;
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true_normal = normal;
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# endif
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# ifdef HAIR_SHADER
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tangent = -hairTangent;
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# else
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tangent_orco_z(orco, orco);
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node_tangent(N, orco, objmat, tangent);
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# endif
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parametric = vec3(barycentric, 0.0);
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backfacing = (gl_FrontFacing) ? 0.0 : 1.0;
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pointiness = 0.5;
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random_per_island = 0.0;
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#endif
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}
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