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Update shading_language.rst

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pkowal1982 2016-07-31 12:44:56 +02:00 committed by GitHub
parent 5e087b8904
commit 93ac24a8e2
1 changed files with 9 additions and 2 deletions
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reference/shading_language.rst
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@ -487,8 +487,15 @@ Obtaining world-space normal and position in material fragment program:
// Use reverse multiply because INV_CAMERA_MATRIX is world2cam
vec3 world_normal = NORMAL * mat3(INV_CAMERA_MATRIX);
vec3 world_pos = (VERTEX - INV_CAMERA_MATRIX.w.xyz) * mat3(INV_CAMERA_MATRIX);
vec4 invcamx = INV_CAMERA_MATRIX.x;
vec4 invcamy = INV_CAMERA_MATRIX.y;
vec4 invcamz = INV_CAMERA_MATRIX.z;
vec4 invcamw = INV_CAMERA_MATRIX.w;
mat3 invcam = mat3(invcamx.xyz, invcamy.xyz, invcamz.xyz);
vec3 world_normal = NORMAL * invcam;
vec3 world_pos = (VERTEX - invcamw.xyz) * invcam;
Notes
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