100 lines
3.7 KiB
Python
100 lines
3.7 KiB
Python
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import lnx.utils
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import lnx.material.mat_state as mat_state
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if lnx.is_reload(__name__):
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lnx.utils = lnx.reload_module(lnx.utils)
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mat_state = lnx.reload_module(mat_state)
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else:
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lnx.enable_reload(__name__)
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def write(vert, particle_info=None, shadowmap=False):
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# Outs
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out_index = True if particle_info != None and particle_info['index'] else False
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out_age = True if particle_info != None and particle_info['age'] else False
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out_lifetime = True if particle_info != None and particle_info['lifetime'] else False
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out_location = True if particle_info != None and particle_info['location'] else False
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out_size = True if particle_info != None and particle_info['size'] else False
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out_velocity = True if particle_info != None and particle_info['velocity'] else False
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out_angular_velocity = True if particle_info != None and particle_info['angular_velocity'] else False
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vert.add_uniform('mat4 pd', '_particleData')
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str_tex_hash = "float fhash(float n) { return fract(sin(n) * 43758.5453); }\n"
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vert.add_function(str_tex_hash)
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prep = 'float '
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if out_age:
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prep = ''
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vert.add_out('float p_age')
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# var p_age = lapTime - p.i * spawnRate
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vert.write(prep + 'p_age = pd[3][3] - gl_InstanceID * pd[0][1];')
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# p_age -= p_age * fhash(i) * r.lifetime_random;
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vert.write('p_age -= p_age * fhash(gl_InstanceID) * pd[2][3];')
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# Loop
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# pd[0][0] - animtime, loop stored in sign
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# vert.write('while (p_age < 0) p_age += pd[0][0];')
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vert.write('if (pd[0][0] > 0 && p_age < 0) p_age += (int(-p_age / pd[0][0]) + 1) * pd[0][0];')
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# lifetime
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prep = 'float '
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if out_lifetime:
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prep = ''
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vert.add_out('float p_lifetime')
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vert.write(prep + 'p_lifetime = pd[0][2];')
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# clip with nan
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vert.write('if (p_age < 0 || p_age > p_lifetime) {')
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vert.write(' gl_Position /= 0.0;')
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vert.write(' return;')
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vert.write('}')
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# vert.write('p_age /= 2;') # Match
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# object_align_factor / 2 + gxyz
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prep = 'vec3 '
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if out_velocity:
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prep = ''
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vert.add_out('vec3 p_velocity')
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vert.write(prep + 'p_velocity = vec3(pd[1][0], pd[1][1], pd[1][2]);')
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vert.write('p_velocity.x += fhash(gl_InstanceID) * pd[1][3] - pd[1][3] / 2;')
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vert.write('p_velocity.y += fhash(gl_InstanceID + pd[0][3]) * pd[1][3] - pd[1][3] / 2;')
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vert.write('p_velocity.z += fhash(gl_InstanceID + 2 * pd[0][3]) * pd[1][3] - pd[1][3] / 2;')
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# factor_random = pd[1][3]
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# p.i = gl_InstanceID
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# particles.length = pd[0][3]
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# gxyz
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vert.write('p_velocity.x += (pd[2][0] * p_age) / 5;')
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vert.write('p_velocity.y += (pd[2][1] * p_age) / 5;')
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vert.write('p_velocity.z += (pd[2][2] * p_age) / 5;')
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prep = 'vec3 '
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if out_location:
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prep = ''
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vert.add_out('vec3 p_location')
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vert.write(prep + 'p_location = p_velocity * p_age;')
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vert.write('spos.xyz += p_location;')
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# Particle fade
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if mat_state.material.lnx_particle_flag and lnx.utils.get_rp().lnx_particles == 'On' and mat_state.material.lnx_particle_fade:
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vert.add_out('float p_fade')
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vert.write('p_fade = sin(min((p_age / 2) * 3.141592, 3.141592));')
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if out_index:
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vert.add_out('float p_index');
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vert.write('p_index = gl_InstanceID;')
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def write_tilesheet(vert):
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# tilesx, tilesy, framerate - pd[3][0], pd[3][1], pd[3][2]
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vert.write('int frame = int((p_age) / pd[3][2]);')
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vert.write('int tx = frame % int(pd[3][0]);')
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vert.write('int ty = int(frame / pd[3][0]);')
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vert.write('vec2 tilesheetOffset = vec2(tx * (1 / pd[3][0]), ty * (1 / pd[3][1]));')
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vert.write('texCoord = tex * texUnpack + tilesheetOffset;')
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# vert.write('texCoord = tex;')
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