156 lines
6.5 KiB
Python
156 lines
6.5 KiB
Python
import bpy
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import lnx
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import lnx.material.mat_state as mat_state
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import lnx.material.make_tess as make_tess
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from lnx.material.shader import ShaderContext
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if lnx.is_reload(__name__):
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mat_state = lnx.reload_module(mat_state)
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make_tess = lnx.reload_module(make_tess)
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lnx.material.shader = lnx.reload_module(lnx.material.shader)
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from lnx.material.shader import ShaderContext
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else:
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lnx.enable_reload(__name__)
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def make(con_mesh: ShaderContext):
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vert = con_mesh.vert
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frag = con_mesh.frag
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geom = con_mesh.geom
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tesc = con_mesh.tesc
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tese = con_mesh.tese
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# Additional values referenced in cycles
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# TODO: enable from cycles.py
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if frag.contains('dotNV') and not frag.contains('float dotNV'):
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frag.write_init('float dotNV = max(dot(n, vVec), 0.0);')
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# n is not always defined yet (in some shadowmap shaders e.g.)
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if not frag.contains('vec3 n'):
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vert.add_out('vec3 wnormal')
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billboard = mat_state.material.lnx_billboard
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if billboard == 'spherical':
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vert.add_uniform('mat3 N', '_normalMatrixSphere')
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elif billboard == 'cylindrical':
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vert.add_uniform('mat3 N', '_normalMatrixCylinder')
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else:
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vert.add_uniform('mat3 N', '_normalMatrix')
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vert.write_attrib('wnormal = normalize(N * vec3(nor.xy, pos.w));')
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frag.write_attrib('vec3 n = normalize(wnormal);')
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# If not yet added, add nor vertex data
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vertex_elems = con_mesh.data['vertex_elements']
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has_normals = False
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for elem in vertex_elems:
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if elem['name'] == 'nor':
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has_normals = True
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break
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if not has_normals:
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vertex_elems.append({'name': 'nor', 'data': 'short2norm'})
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write_wpos = False
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if frag.contains('vVec') and not frag.contains('vec3 vVec'):
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if tese is not None:
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tese.add_out('vec3 eyeDir')
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tese.add_uniform('vec3 eye', '_cameraPosition')
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tese.write('eyeDir = eye - wposition;')
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else:
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if not vert.contains('wposition'):
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write_wpos = True
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vert.add_out('vec3 eyeDir')
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vert.add_uniform('vec3 eye', '_cameraPosition')
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vert.write('eyeDir = eye - wposition;')
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frag.write_attrib('vec3 vVec = normalize(eyeDir);')
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export_wpos = False
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if frag.contains('wposition') and not frag.contains('vec3 wposition'):
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export_wpos = True
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if tese is not None:
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export_wpos = True
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if vert.contains('wposition'):
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write_wpos = True
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if export_wpos:
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vert.add_uniform('mat4 W', '_worldMatrix')
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vert.add_out('vec3 wposition')
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vert.write('wposition = vec4(W * spos).xyz;')
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elif write_wpos:
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vert.add_uniform('mat4 W', '_worldMatrix')
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vert.write_attrib('vec3 wposition = vec4(W * spos).xyz;')
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frag_mpos = (frag.contains('mposition') and not frag.contains('vec3 mposition')) or vert.contains('mposition')
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if frag_mpos:
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vert.add_out('vec3 mposition')
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vert.add_uniform('float posUnpack', link='_posUnpack')
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vert.write_attrib('mposition = spos.xyz * posUnpack;')
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if tese is not None:
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if frag_mpos:
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make_tess.interpolate(tese, 'mposition', 3, declare_out=True)
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elif tese.contains('mposition') and not tese.contains('vec3 mposition'):
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vert.add_out('vec3 mposition')
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vert.write_pre = True
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vert.add_uniform('float posUnpack', link='_posUnpack')
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vert.write('mposition = spos.xyz * posUnpack;')
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vert.write_pre = False
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make_tess.interpolate(tese, 'mposition', 3, declare_out=False)
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frag_bpos = (frag.contains('bposition') and not frag.contains('vec3 bposition')) or vert.contains('bposition')
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if frag_bpos:
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vert.add_out('vec3 bposition')
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vert.add_uniform('vec3 dim', link='_dim')
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vert.add_uniform('vec3 hdim', link='_halfDim')
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vert.add_uniform('float posUnpack', link='_posUnpack')
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vert.write_attrib('bposition = (spos.xyz * posUnpack + hdim) / dim;')
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vert.write_attrib('if (dim.z == 0) bposition.z = 0;')
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vert.write_attrib('if (dim.y == 0) bposition.y = 0;')
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vert.write_attrib('if (dim.x == 0) bposition.x = 0;')
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if tese is not None:
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if frag_bpos:
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make_tess.interpolate(tese, 'bposition', 3, declare_out=True)
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elif tese.contains('bposition') and not tese.contains('vec3 bposition'):
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vert.add_out('vec3 bposition')
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vert.add_uniform('vec3 dim', link='_dim')
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vert.add_uniform('vec3 hdim', link='_halfDim')
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vert.add_uniform('float posUnpack', link='_posUnpack')
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vert.write_attrib('bposition = (spos.xyz * posUnpack + hdim) / dim;')
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make_tess.interpolate(tese, 'bposition', 3, declare_out=False)
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frag_wtan = (frag.contains('wtangent') and not frag.contains('vec3 wtangent')) or vert.contains('wtangent')
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if frag_wtan:
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# Indicate we want tang attrib in finalizer to prevent TBN generation
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con_mesh.add_elem('tex', 'short2norm')
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con_mesh.add_elem('tang', 'short4norm')
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vert.add_out('vec3 wtangent')
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vert.write_pre = True
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vert.write('wtangent = normalize(N * tang.xyz);')
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vert.write_pre = False
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if tese is not None:
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if frag_wtan:
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make_tess.interpolate(tese, 'wtangent', 3, declare_out=True)
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elif tese.contains('wtangent') and not tese.contains('vec3 wtangent'):
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vert.add_out('vec3 wtangent')
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vert.write_pre = True
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vert.write('wtangent = normalize(N * tang.xyz);')
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vert.write_pre = False
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make_tess.interpolate(tese, 'wtangent', 3, declare_out=False)
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if frag.contains('vVecCam'):
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vert.add_out('vec3 eyeDirCam')
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vert.add_uniform('mat4 WV', '_worldViewMatrix')
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vert.write('eyeDirCam = vec4(WV * spos).xyz; eyeDirCam.z *= -1;')
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frag.write_attrib('vec3 vVecCam = normalize(eyeDirCam);')
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if frag.contains('nAttr'):
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vert.add_out('vec3 nAttr')
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vert.write_attrib('nAttr = vec3(nor.xy, pos.w);')
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wrd = bpy.data.worlds['Lnx']
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if '_Legacy' in wrd.world_defs:
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frag.replace('sampler2DShadow', 'sampler2D')
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frag.replace('samplerCubeShadow', 'samplerCube')
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