36 lines
1.8 KiB
Python
36 lines
1.8 KiB
Python
import arm.utils
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def skin_pos(vert):
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vert.add_include('compiled.inc')
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rpdat = arm.utils.get_rp()
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if rpdat.arm_skin == 'GPU (Matrix)':
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vert.add_include('std/skinning_mat.glsl')
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vert.add_uniform('vec4 skinBones[skinMaxBones * 3]', link='_skinBones', included=True)
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vert.add_uniform('float posUnpack', link='_posUnpack')
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vert.write_attrib('mat4 skinningMat = getSkinningMat(ivec4(bone * 32767), weight);')
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vert.write_attrib('spos.xyz *= posUnpack;')
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vert.write_attrib('spos *= skinningMat;')
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vert.write_attrib('spos.xyz /= posUnpack;')
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else: # Dual Quat
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vert.add_include('std/skinning.glsl')
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vert.add_uniform('vec4 skinBones[skinMaxBones * 2]', link='_skinBones', included=True)
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vert.add_uniform('float posUnpack', link='_posUnpack')
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vert.write_attrib('vec4 skinA;')
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vert.write_attrib('vec4 skinB;')
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vert.write_attrib('getSkinningDualQuat(ivec4(bone * 32767), weight, skinA, skinB);')
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vert.write_attrib('spos.xyz *= posUnpack;')
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vert.write_attrib('spos.xyz += 2.0 * cross(skinA.xyz, cross(skinA.xyz, spos.xyz) + skinA.w * spos.xyz); // Rotate')
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vert.write_attrib('spos.xyz += 2.0 * (skinA.w * skinB.xyz - skinB.w * skinA.xyz + cross(skinA.xyz, skinB.xyz)); // Translate')
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vert.write_attrib('spos.xyz /= posUnpack;')
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def skin_nor(vert, prep):
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rpdat = arm.utils.get_rp()
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if rpdat.arm_skin == 'GPU (Matrix)':
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vert.write('mat3 skinningMatVec = getSkinningMatVec(skinningMat);')
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vert.write(prep + 'wnormal = normalize(N * (vec3(nor.xy, pos.w) * skinningMatVec));')
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else: # Dual Quat
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vert.write(prep + 'wnormal = normalize(N * (vec3(nor.xy, pos.w) + 2.0 * cross(skinA.xyz, cross(skinA.xyz, vec3(nor.xy, pos.w)) + skinA.w * vec3(nor.xy, pos.w))));')
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