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-rw-r--r--scene/resources/particles_material.cpp257
1 files changed, 132 insertions, 125 deletions
diff --git a/scene/resources/particles_material.cpp b/scene/resources/particles_material.cpp
index 195ce070a7..bb47eebe9b 100644
--- a/scene/resources/particles_material.cpp
+++ b/scene/resources/particles_material.cpp
@@ -289,7 +289,7 @@ void ParticlesMaterial::_update_shader() {
code += "}\n";
code += "\n";
- code += "void compute() {\n";
+ code += "void start() {\n";
code += " uint base_number = NUMBER;\n";
code += " uint alt_seed = hash(base_number + uint(1) + RANDOM_SEED);\n";
code += " float angle_rand = rand_from_seed(alt_seed);\n";
@@ -305,97 +305,94 @@ void ParticlesMaterial::_update_shader() {
code += " ivec2 emission_tex_size = textureSize(emission_texture_points, 0);\n";
code += " ivec2 emission_tex_ofs = ivec2(point % emission_tex_size.x, point / emission_tex_size.x);\n";
}
- code += " float tv = 0.0;\n";
- code += " if (RESTART) {\n";
-
if (tex_parameters[PARAM_ANGLE].is_valid()) {
- code += " float tex_angle = textureLod(angle_texture, vec2(0.0, 0.0), 0.0).r;\n";
+ code += " float tex_angle = textureLod(angle_texture, vec2(0.0, 0.0), 0.0).r;\n";
} else {
- code += " float tex_angle = 0.0;\n";
+ code += " float tex_angle = 0.0;\n";
}
if (tex_parameters[PARAM_ANIM_OFFSET].is_valid()) {
- code += " float tex_anim_offset = textureLod(anim_offset_texture, vec2(0.0, 0.0), 0.0).r;\n";
+ code += " float tex_anim_offset = textureLod(anim_offset_texture, vec2(0.0, 0.0), 0.0).r;\n";
} else {
- code += " float tex_anim_offset = 0.0;\n";
+ code += " float tex_anim_offset = 0.0;\n";
}
- code += " float spread_rad = spread * degree_to_rad;\n";
+ code += " float spread_rad = spread * degree_to_rad;\n";
- code += " if (RESTART_VELOCITY) {\n";
+ code += " if (RESTART_VELOCITY) {\n";
if (tex_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
- code += " float tex_linear_velocity = textureLod(linear_velocity_texture, vec2(0.0, 0.0), 0.0).r;\n";
+ code += " float tex_linear_velocity = textureLod(linear_velocity_texture, vec2(0.0, 0.0), 0.0).r;\n";
} else {
- code += " float tex_linear_velocity = 0.0;\n";
+ code += " float tex_linear_velocity = 0.0;\n";
}
if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
- code += " float angle1_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad;\n";
- code += " angle1_rad += direction.x != 0.0 ? atan(direction.y, direction.x) : sign(direction.y) * (pi / 2.0);\n";
- code += " vec3 rot = vec3(cos(angle1_rad), sin(angle1_rad), 0.0);\n";
- code += " VELOCITY = rot * initial_linear_velocity * mix(1.0, rand_from_seed(alt_seed), initial_linear_velocity_random);\n";
+ code += " float angle1_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad;\n";
+ code += " angle1_rad += direction.x != 0.0 ? atan(direction.y, direction.x) : sign(direction.y) * (pi / 2.0);\n";
+ code += " vec3 rot = vec3(cos(angle1_rad), sin(angle1_rad), 0.0);\n";
+ code += " VELOCITY = rot * initial_linear_velocity * mix(1.0, rand_from_seed(alt_seed), initial_linear_velocity_random);\n";
} else {
//initiate velocity spread in 3D
- code += " float angle1_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad;\n";
- code += " float angle2_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad * (1.0 - flatness);\n";
- code += " vec3 direction_xz = vec3(sin(angle1_rad), 0.0, cos(angle1_rad));\n";
- code += " vec3 direction_yz = vec3(0.0, sin(angle2_rad), cos(angle2_rad));\n";
- code += " direction_yz.z = direction_yz.z / max(0.0001,sqrt(abs(direction_yz.z))); // better uniform distribution\n";
- code += " vec3 spread_direction = vec3(direction_xz.x * direction_yz.z, direction_yz.y, direction_xz.z * direction_yz.z);\n";
- code += " vec3 direction_nrm = normalize(direction);\n";
- code += " // rotate spread to direction\n";
- code += " vec3 binormal = cross(vec3(0.0, 1.0, 0.0), direction_nrm);\n";
- code += " if (length(binormal) < 0.0001) {\n";
- code += " // direction is parallel to Y. Choose Z as the binormal.\n";
- code += " binormal = vec3(0.0, 0.0, 1.0);\n";
- code += " }\n";
- code += " binormal = normalize(binormal);\n";
- code += " vec3 normal = cross(binormal, direction_nrm);\n";
- code += " spread_direction = binormal * spread_direction.x + normal * spread_direction.y + direction_nrm * spread_direction.z;\n";
- code += " VELOCITY = spread_direction * initial_linear_velocity * mix(1.0, rand_from_seed(alt_seed), initial_linear_velocity_random);\n";
+ code += " float angle1_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad;\n";
+ code += " float angle2_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad * (1.0 - flatness);\n";
+ code += " vec3 direction_xz = vec3(sin(angle1_rad), 0.0, cos(angle1_rad));\n";
+ code += " vec3 direction_yz = vec3(0.0, sin(angle2_rad), cos(angle2_rad));\n";
+ code += " direction_yz.z = direction_yz.z / max(0.0001,sqrt(abs(direction_yz.z))); // better uniform distribution\n";
+ code += " vec3 spread_direction = vec3(direction_xz.x * direction_yz.z, direction_yz.y, direction_xz.z * direction_yz.z);\n";
+ code += " vec3 direction_nrm = normalize(direction);\n";
+ code += " // rotate spread to direction\n";
+ code += " vec3 binormal = cross(vec3(0.0, 1.0, 0.0), direction_nrm);\n";
+ code += " if (length(binormal) < 0.0001) {\n";
+ code += " // direction is parallel to Y. Choose Z as the binormal.\n";
+ code += " binormal = vec3(0.0, 0.0, 1.0);\n";
+ code += " }\n";
+ code += " binormal = normalize(binormal);\n";
+ code += " vec3 normal = cross(binormal, direction_nrm);\n";
+ code += " spread_direction = binormal * spread_direction.x + normal * spread_direction.y + direction_nrm * spread_direction.z;\n";
+ code += " VELOCITY = spread_direction * initial_linear_velocity * mix(1.0, rand_from_seed(alt_seed), initial_linear_velocity_random);\n";
}
- code += " }\n";
+ code += " }\n";
- code += " float base_angle = (initial_angle + tex_angle) * mix(1.0, angle_rand, initial_angle_random);\n";
- code += " CUSTOM.x = base_angle * degree_to_rad;\n"; // angle
- code += " CUSTOM.y = 0.0;\n"; // phase
- code += " CUSTOM.w = (1.0 - lifetime_randomness * rand_from_seed(alt_seed));\n";
- code += " CUSTOM.z = (anim_offset + tex_anim_offset) * mix(1.0, anim_offset_rand, anim_offset_random);\n"; // animation offset (0-1)
+ code += " float base_angle = (initial_angle + tex_angle) * mix(1.0, angle_rand, initial_angle_random);\n";
+ code += " CUSTOM.x = base_angle * degree_to_rad;\n"; // angle
+ code += " CUSTOM.y = 0.0;\n"; // phase
+ code += " CUSTOM.w = (1.0 - lifetime_randomness * rand_from_seed(alt_seed));\n";
+ code += " CUSTOM.z = (anim_offset + tex_anim_offset) * mix(1.0, anim_offset_rand, anim_offset_random);\n"; // animation offset (0-1)
- code += " if (RESTART_POSITION) {\n";
+ code += " if (RESTART_POSITION) {\n";
switch (emission_shape) {
case EMISSION_SHAPE_POINT: {
//do none, identity (will later be multiplied by emission transform)
- code += " TRANSFORM = mat4(vec4(1,0,0,0),vec4(0,1,0,0),vec4(0,0,1,0),vec4(0,0,0,1));\n";
+ code += " TRANSFORM = mat4(vec4(1,0,0,0),vec4(0,1,0,0),vec4(0,0,1,0),vec4(0,0,0,1));\n";
} break;
case EMISSION_SHAPE_SPHERE: {
- code += " float s = rand_from_seed(alt_seed) * 2.0 - 1.0;\n";
- code += " float t = rand_from_seed(alt_seed) * 2.0 * pi;\n";
- code += " float radius = emission_sphere_radius * sqrt(1.0 - s * s);\n";
- code += " TRANSFORM[3].xyz = vec3(radius * cos(t), radius * sin(t), emission_sphere_radius * s);\n";
+ code += " float s = rand_from_seed(alt_seed) * 2.0 - 1.0;\n";
+ code += " float t = rand_from_seed(alt_seed) * 2.0 * pi;\n";
+ code += " float radius = emission_sphere_radius * sqrt(1.0 - s * s);\n";
+ code += " TRANSFORM[3].xyz = vec3(radius * cos(t), radius * sin(t), emission_sphere_radius * s);\n";
} break;
case EMISSION_SHAPE_BOX: {
- code += " TRANSFORM[3].xyz = vec3(rand_from_seed(alt_seed) * 2.0 - 1.0, rand_from_seed(alt_seed) * 2.0 - 1.0, rand_from_seed(alt_seed) * 2.0 - 1.0) * emission_box_extents;\n";
+ code += " TRANSFORM[3].xyz = vec3(rand_from_seed(alt_seed) * 2.0 - 1.0, rand_from_seed(alt_seed) * 2.0 - 1.0, rand_from_seed(alt_seed) * 2.0 - 1.0) * emission_box_extents;\n";
} break;
case EMISSION_SHAPE_POINTS:
case EMISSION_SHAPE_DIRECTED_POINTS: {
- code += " TRANSFORM[3].xyz = texelFetch(emission_texture_points, emission_tex_ofs, 0).xyz;\n";
+ code += " TRANSFORM[3].xyz = texelFetch(emission_texture_points, emission_tex_ofs, 0).xyz;\n";
if (emission_shape == EMISSION_SHAPE_DIRECTED_POINTS) {
if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
- code += " mat2 rotm;";
- code += " rotm[0] = texelFetch(emission_texture_normal, emission_tex_ofs, 0).xy;\n";
- code += " rotm[1] = rotm[0].yx * vec2(1.0, -1.0);\n";
- code += " if (RESTART_VELOCITY) VELOCITY.xy = rotm * VELOCITY.xy;\n";
+ code += " mat2 rotm;";
+ code += " rotm[0] = texelFetch(emission_texture_normal, emission_tex_ofs, 0).xy;\n";
+ code += " rotm[1] = rotm[0].yx * vec2(1.0, -1.0);\n";
+ code += " if (RESTART_VELOCITY) VELOCITY.xy = rotm * VELOCITY.xy;\n";
} else {
- code += " vec3 normal = texelFetch(emission_texture_normal, emission_tex_ofs, 0).xyz;\n";
- code += " vec3 v0 = abs(normal.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(0.0, 1.0, 0.0);\n";
- code += " vec3 tangent = normalize(cross(v0, normal));\n";
- code += " vec3 bitangent = normalize(cross(tangent, normal));\n";
- code += " if (RESTART_VELOCITY) VELOCITY = mat3(tangent, bitangent, normal) * VELOCITY;\n";
+ code += " vec3 normal = texelFetch(emission_texture_normal, emission_tex_ofs, 0).xyz;\n";
+ code += " vec3 v0 = abs(normal.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(0.0, 1.0, 0.0);\n";
+ code += " vec3 tangent = normalize(cross(v0, normal));\n";
+ code += " vec3 bitangent = normalize(cross(tangent, normal));\n";
+ code += " if (RESTART_VELOCITY) VELOCITY = mat3(tangent, bitangent, normal) * VELOCITY;\n";
}
}
} break;
@@ -404,134 +401,144 @@ void ParticlesMaterial::_update_shader() {
}
}
- code += " if (RESTART_VELOCITY) VELOCITY = (EMISSION_TRANSFORM * vec4(VELOCITY, 0.0)).xyz;\n";
- code += " TRANSFORM = EMISSION_TRANSFORM * TRANSFORM;\n";
+ code += " if (RESTART_VELOCITY) VELOCITY = (EMISSION_TRANSFORM * vec4(VELOCITY, 0.0)).xyz;\n";
+ code += " TRANSFORM = EMISSION_TRANSFORM * TRANSFORM;\n";
if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
- code += " VELOCITY.z = 0.0;\n";
- code += " TRANSFORM[3].z = 0.0;\n";
+ code += " VELOCITY.z = 0.0;\n";
+ code += " TRANSFORM[3].z = 0.0;\n";
}
- code += " }\n";
+ code += " }\n";
+ code += "}\n\n";
- code += " } else {\n";
+ code += "void process() {\n";
+ code += " uint base_number = NUMBER;\n";
+ code += " uint alt_seed = hash(base_number + uint(1) + RANDOM_SEED);\n";
+ code += " float angle_rand = rand_from_seed(alt_seed);\n";
+ code += " float scale_rand = rand_from_seed(alt_seed);\n";
+ code += " float hue_rot_rand = rand_from_seed(alt_seed);\n";
+ code += " float anim_offset_rand = rand_from_seed(alt_seed);\n";
+ code += " float pi = 3.14159;\n";
+ code += " float degree_to_rad = pi / 180.0;\n";
+ code += "\n";
- code += " CUSTOM.y += DELTA / LIFETIME;\n";
- code += " tv = CUSTOM.y / CUSTOM.w;\n";
+ code += " CUSTOM.y += DELTA / LIFETIME;\n";
+ code += " float tv = CUSTOM.y / CUSTOM.w;\n";
if (tex_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
- code += " float tex_linear_velocity = textureLod(linear_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_linear_velocity = textureLod(linear_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_linear_velocity = 0.0;\n";
+ code += " float tex_linear_velocity = 0.0;\n";
}
if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
if (tex_parameters[PARAM_ORBIT_VELOCITY].is_valid()) {
- code += " float tex_orbit_velocity = textureLod(orbit_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_orbit_velocity = textureLod(orbit_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_orbit_velocity = 0.0;\n";
+ code += " float tex_orbit_velocity = 0.0;\n";
}
}
if (tex_parameters[PARAM_ANGULAR_VELOCITY].is_valid()) {
- code += " float tex_angular_velocity = textureLod(angular_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_angular_velocity = textureLod(angular_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_angular_velocity = 0.0;\n";
+ code += " float tex_angular_velocity = 0.0;\n";
}
if (tex_parameters[PARAM_LINEAR_ACCEL].is_valid()) {
- code += " float tex_linear_accel = textureLod(linear_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_linear_accel = textureLod(linear_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_linear_accel = 0.0;\n";
+ code += " float tex_linear_accel = 0.0;\n";
}
if (tex_parameters[PARAM_RADIAL_ACCEL].is_valid()) {
- code += " float tex_radial_accel = textureLod(radial_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_radial_accel = textureLod(radial_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_radial_accel = 0.0;\n";
+ code += " float tex_radial_accel = 0.0;\n";
}
if (tex_parameters[PARAM_TANGENTIAL_ACCEL].is_valid()) {
- code += " float tex_tangent_accel = textureLod(tangent_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_tangent_accel = textureLod(tangent_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_tangent_accel = 0.0;\n";
+ code += " float tex_tangent_accel = 0.0;\n";
}
if (tex_parameters[PARAM_DAMPING].is_valid()) {
- code += " float tex_damping = textureLod(damping_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_damping = textureLod(damping_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_damping = 0.0;\n";
+ code += " float tex_damping = 0.0;\n";
}
if (tex_parameters[PARAM_ANGLE].is_valid()) {
- code += " float tex_angle = textureLod(angle_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_angle = textureLod(angle_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_angle = 0.0;\n";
+ code += " float tex_angle = 0.0;\n";
}
if (tex_parameters[PARAM_ANIM_SPEED].is_valid()) {
- code += " float tex_anim_speed = textureLod(anim_speed_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_anim_speed = textureLod(anim_speed_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_anim_speed = 0.0;\n";
+ code += " float tex_anim_speed = 0.0;\n";
}
if (tex_parameters[PARAM_ANIM_OFFSET].is_valid()) {
- code += " float tex_anim_offset = textureLod(anim_offset_texture, vec2(tv, 0.0), 0.0).r;\n";
+ code += " float tex_anim_offset = textureLod(anim_offset_texture, vec2(tv, 0.0), 0.0).r;\n";
} else {
- code += " float tex_anim_offset = 0.0;\n";
+ code += " float tex_anim_offset = 0.0;\n";
}
- code += " vec3 force = gravity;\n";
- code += " vec3 pos = TRANSFORM[3].xyz;\n";
+ code += " vec3 force = gravity;\n";
+ code += " vec3 pos = TRANSFORM[3].xyz;\n";
if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
- code += " pos.z = 0.0;\n";
- }
- code += " // apply linear acceleration\n";
- code += " force += length(VELOCITY) > 0.0 ? normalize(VELOCITY) * (linear_accel + tex_linear_accel) * mix(1.0, rand_from_seed(alt_seed), linear_accel_random) : vec3(0.0);\n";
- code += " // apply radial acceleration\n";
- code += " vec3 org = EMISSION_TRANSFORM[3].xyz;\n";
- code += " vec3 diff = pos - org;\n";
- code += " force += length(diff) > 0.0 ? normalize(diff) * (radial_accel + tex_radial_accel) * mix(1.0, rand_from_seed(alt_seed), radial_accel_random) : vec3(0.0);\n";
- code += " // apply tangential acceleration;\n";
+ code += " pos.z = 0.0;\n";
+ }
+ code += " // apply linear acceleration\n";
+ code += " force += length(VELOCITY) > 0.0 ? normalize(VELOCITY) * (linear_accel + tex_linear_accel) * mix(1.0, rand_from_seed(alt_seed), linear_accel_random) : vec3(0.0);\n";
+ code += " // apply radial acceleration\n";
+ code += " vec3 org = EMISSION_TRANSFORM[3].xyz;\n";
+ code += " vec3 diff = pos - org;\n";
+ code += " force += length(diff) > 0.0 ? normalize(diff) * (radial_accel + tex_radial_accel) * mix(1.0, rand_from_seed(alt_seed), radial_accel_random) : vec3(0.0);\n";
+ code += " // apply tangential acceleration;\n";
if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
- code += " force += length(diff.yx) > 0.0 ? vec3(normalize(diff.yx * vec2(-1.0, 1.0)), 0.0) * ((tangent_accel + tex_tangent_accel) * mix(1.0, rand_from_seed(alt_seed), tangent_accel_random)) : vec3(0.0);\n";
+ code += " force += length(diff.yx) > 0.0 ? vec3(normalize(diff.yx * vec2(-1.0, 1.0)), 0.0) * ((tangent_accel + tex_tangent_accel) * mix(1.0, rand_from_seed(alt_seed), tangent_accel_random)) : vec3(0.0);\n";
} else {
- code += " vec3 crossDiff = cross(normalize(diff), normalize(gravity));\n";
- code += " force += length(crossDiff) > 0.0 ? normalize(crossDiff) * ((tangent_accel + tex_tangent_accel) * mix(1.0, rand_from_seed(alt_seed), tangent_accel_random)) : vec3(0.0);\n";
+ code += " vec3 crossDiff = cross(normalize(diff), normalize(gravity));\n";
+ code += " force += length(crossDiff) > 0.0 ? normalize(crossDiff) * ((tangent_accel + tex_tangent_accel) * mix(1.0, rand_from_seed(alt_seed), tangent_accel_random)) : vec3(0.0);\n";
}
if (attractor_interaction_enabled) {
- code += " force += ATTRACTOR_FORCE;\n\n";
+ code += " force += ATTRACTOR_FORCE;\n\n";
}
- code += " // apply attractor forces\n";
- code += " VELOCITY += force * DELTA;\n";
- code += " // orbit velocity\n";
+ code += " // apply attractor forces\n";
+ code += " VELOCITY += force * DELTA;\n";
+ code += " // orbit velocity\n";
if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
- code += " float orbit_amount = (orbit_velocity + tex_orbit_velocity) * mix(1.0, rand_from_seed(alt_seed), orbit_velocity_random);\n";
- code += " if (orbit_amount != 0.0) {\n";
- code += " float ang = orbit_amount * DELTA * pi * 2.0;\n";
- code += " mat2 rot = mat2(vec2(cos(ang), -sin(ang)), vec2(sin(ang), cos(ang)));\n";
- code += " TRANSFORM[3].xy -= diff.xy;\n";
- code += " TRANSFORM[3].xy += rot * diff.xy;\n";
- code += " }\n";
+ code += " float orbit_amount = (orbit_velocity + tex_orbit_velocity) * mix(1.0, rand_from_seed(alt_seed), orbit_velocity_random);\n";
+ code += " if (orbit_amount != 0.0) {\n";
+ code += " float ang = orbit_amount * DELTA * pi * 2.0;\n";
+ code += " mat2 rot = mat2(vec2(cos(ang), -sin(ang)), vec2(sin(ang), cos(ang)));\n";
+ code += " TRANSFORM[3].xy -= diff.xy;\n";
+ code += " TRANSFORM[3].xy += rot * diff.xy;\n";
+ code += " }\n";
}
if (tex_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
- code += " VELOCITY = normalize(VELOCITY) * tex_linear_velocity;\n";
- }
- code += " if (damping + tex_damping > 0.0) {\n";
- code += " float v = length(VELOCITY);\n";
- code += " float damp = (damping + tex_damping) * mix(1.0, rand_from_seed(alt_seed), damping_random);\n";
- code += " v -= damp * DELTA;\n";
- code += " if (v < 0.0) {\n";
- code += " VELOCITY = vec3(0.0);\n";
- code += " } else {\n";
- code += " VELOCITY = normalize(VELOCITY) * v;\n";
- code += " }\n";
+ code += " VELOCITY = normalize(VELOCITY) * tex_linear_velocity;\n";
+ }
+ code += " if (damping + tex_damping > 0.0) {\n";
+ code += " float v = length(VELOCITY);\n";
+ code += " float damp = (damping + tex_damping) * mix(1.0, rand_from_seed(alt_seed), damping_random);\n";
+ code += " v -= damp * DELTA;\n";
+ code += " if (v < 0.0) {\n";
+ code += " VELOCITY = vec3(0.0);\n";
+ code += " } else {\n";
+ code += " VELOCITY = normalize(VELOCITY) * v;\n";
code += " }\n";
- code += " float base_angle = (initial_angle + tex_angle) * mix(1.0, angle_rand, initial_angle_random);\n";
- code += " base_angle += CUSTOM.y * LIFETIME * (angular_velocity + tex_angular_velocity) * mix(1.0, rand_from_seed(alt_seed) * 2.0 - 1.0, angular_velocity_random);\n";
- code += " CUSTOM.x = base_angle * degree_to_rad;\n"; // angle
- code += " CUSTOM.z = (anim_offset + tex_anim_offset) * mix(1.0, anim_offset_rand, anim_offset_random) + CUSTOM.y * (anim_speed + tex_anim_speed) * mix(1.0, rand_from_seed(alt_seed), anim_speed_random);\n"; // angle
code += " }\n";
+ code += " float base_angle = (initial_angle + tex_angle) * mix(1.0, angle_rand, initial_angle_random);\n";
+ code += " base_angle += CUSTOM.y * LIFETIME * (angular_velocity + tex_angular_velocity) * mix(1.0, rand_from_seed(alt_seed) * 2.0 - 1.0, angular_velocity_random);\n";
+ code += " CUSTOM.x = base_angle * degree_to_rad;\n"; // angle
+ code += " CUSTOM.z = (anim_offset + tex_anim_offset) * mix(1.0, anim_offset_rand, anim_offset_random) + CUSTOM.y * (anim_speed + tex_anim_speed) * mix(1.0, rand_from_seed(alt_seed), anim_speed_random);\n"; // angle
+
// apply color
// apply hue rotation
if (tex_parameters[PARAM_SCALE].is_valid()) {
@@ -659,7 +666,7 @@ void ParticlesMaterial::_update_shader() {
code += " }";
}
- code += " if (CUSTOM.y > CUSTOM.w) {";
+ code += " if (CUSTOM.y > CUSTOM.w) {\n";
code += " ACTIVE = false;\n";
code += " }\n";
code += "}\n";
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 21:20:45 +0000