glam

Port of glam-rs 0.33.8 to Cairo on top of the fixed Q32.32 scalar: Vec2/3/4, Mat2/3/4, Quat, Affine2/3, BVec*, IVec*, UVec*. Same module, type and method names as glam-rs.

Progress: docs/PORTING_STATUS.md. Compatible with Cairo 2.19.4.

Gas

Sierra gas (l2 gas, what a transaction pays) and prover cost (steps, range checks) of one call, net of the test overhead (X__op - X__base, see scripts/bench.py), measured with scarb 2.19.4, starknet-foundry 0.61.0 (.tool-versions). Source of truth: gas/*.snap; this region is generated by scripts/gas_tables.py, do not edit it.

Vec2

op l2 gas steps range checks add 2 600 22 4 mul_scalar 4 280 36 8 dot 1 880 16 4 perp_dot 1 880 16 4 length 2 220 18 6 normalize 6 940 57 16 rotate 4 680 40 8 from_angle 31 300 243 62 to_angle 28 120 210 46

Vec3

op l2 gas steps range checks add 3 440 29 6 mul_scalar 5 960 50 12 dot 2 080 18 4 cross 6 560 56 12 length 3 340 28 6 normalize 8 720 72 20 distance 3 640 31 6 lerp 6 860 59 12 reflect 9 680 83 18 angle_between 38 980 307 70

Vec4

op l2 gas steps range checks add 4 280 36 8 mul_scalar 7 640 64 16 dot 3 200 28 4 length 3 540 30 6 normalize 10 500 87 24 lerp 8 840 76 16

Mat2

op l2 gas steps range checks mul_vec2 4 680 40 8 mul_mat2 8 440 72 16 determinant 1 880 16 4 inverse 13 310 105 24 transpose 400 4 0 from_angle 31 700 247 62

Mat3

op l2 gas steps range checks mul_vec3 7 160 62 12 mul_mat3 19 640 170 36 determinant 3 800 34 4 inverse 39 530 328 80 transpose 900 9 0 from_quat 20 660 176 42 from_axis_angle 50 680 409 100 from_rotation_z 32 200 252 62

Mat4

op l2 gas steps range checks mul_vec4 10 040 88 16 mul_mat4 36 480 320 64 transform_point3 7 760 68 12 project_point3 20 590 171 32 determinant 16 380 143 28 inverse 102 610 868 208 transpose 2 520 24 0 from_quat 21 360 183 42 from_rotation_translation 21 360 183 42 look_at_rh 43 890 370 82

Quat

op l2 gas steps range checks mul_quat 10 040 88 16 mul_vec3 9 360 84 12 conjugate 1 000 10 0 normalize 10 500 87 24 slerp 122 180 923 225 lerp 24 120 196 47 from_axis_angle 40 350 312 78 from_rotation_arc 52 200 178 44 from_mat3 19 770 163 42 to_axis_angle 40 100 297 69

Affine2

op l2 gas steps range checks transform_point2 5 080 44 8 transform_vector2 4 680 40 8 mul_affine2 12 600 108 24 inverse 20 630 167 40 from_angle_translation 31 900 249 62

Affine3

op l2 gas steps range checks transform_point3 7 760 68 12 transform_vector3 7 160 62 12 mul_affine3 26 480 230 48 inverse 48 490 408 92 inverse_rigid 8 360 74 12 from_rotation_translation 20 960 179 42 look_to_rh 42 770 363 76

Euler angles (EulerRot, worst case: generic order)

op l2 gas steps range checks Quat::from_euler 110 800 874 214 Quat::to_euler 117 530 883 181 Mat3::from_euler 114 170 897 218 Mat3::to_euler 94 160 689 139 Mat4::from_euler 114 870 904 218

Camera (glam::camera)

op l2 gas steps range checks rh::proj::opengl::perspective 50 060 403 98 rh::proj::vulkan::perspective 48 780 393 94 rh::proj::vulkan::perspective_infinite_reverse 42 830 343 81 rh::proj::opengl::orthographic 22 440 189 48 rh::proj::opengl::frustum 24 040 202 52 rh::view::look_at_mat4 38 760 329 82 rh::view::look_to_mat4 28 740 247 56