print_n_panic/Microtransactions64
0
0
Fork 0
mirror of https://github.com/Print-and-Panic/Microtransactions64.git synced 2026-01-21 10:17:19 -08:00
Code Issues Packages Projects Releases Wiki Activity

the funny vec3f_copy optimization

Browse Source
This commit is contained in:
Arceveti
2021-09-25 18:33:35 -07:00
parent bf3828b724
commit 3d6725bfa1
5 changed files with 64 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
src/engine/math_util.c
View File

@@ -22,7 +22,8 @@ int gSplineState;
/// Copy vector 'src' to 'dest'
void vec3f_copy(Vec3f dest, Vec3f src) {
vec3_copy(dest, src);
((u64 *) dest)[0] = ((u64 *) src)[0];
((u32 *) dest)[2] = ((u32 *) src)[2];
}
/// Set vector 'dest' to (x, y, z)
@@ -32,7 +33,16 @@ void vec3f_set(Vec3f dest, f32 x, f32 y, f32 z) {
/// Add vector 'a' to 'dest'
void vec3f_add(Vec3f dest, Vec3f a) {
vec3_add(dest, a);
register f32 *temp = dest;
register s32 j;
register f32 sum, sum2;
for (j = 0; j < 3; j++) {
sum = *a;
a++;
sum2 = *temp;
temp++;
temp[-1] = (sum + sum2);
}
}
/// Make 'dest' the sum of vectors a and b.
@@ -135,7 +145,7 @@ void mtxf_identity(Mat4 mtx) {
*/
void mtxf_translate(Mat4 dest, Vec3f b) {
mtxf_identity(dest);
vec3_copy(dest[3], b);
vec3f_copy(dest[3], b);
}
/**
@@ -315,10 +325,10 @@ void mtxf_align_terrain_normal(Mat4 dest, Vec3f upDir, Vec3f pos, s32 yaw) {
vec3_cross(forwardDir, leftDir, upDir);
vec3f_normalize(forwardDir);
vec3_copy(dest[0], leftDir);
vec3_copy(dest[1], upDir);
vec3_copy(dest[2], forwardDir);
vec3_copy(dest[3], pos);
vec3f_copy(dest[0], leftDir);
vec3f_copy(dest[1], upDir);
vec3f_copy(dest[2], forwardDir);
vec3f_copy(dest[3], pos);
dest[0][3] = 0.0f;
dest[1][3] = 0.0f;
@@ -374,9 +384,9 @@ void mtxf_align_terrain_triangle(Mat4 mtx, Vec3f pos, s32 yaw, f32 radius) {
vec3f_normalize(xColumn);
vec3_cross(zColumn, xColumn, yColumn);
vec3f_normalize(zColumn);
vec3_copy(mtx[0], xColumn);
vec3_copy(mtx[1], yColumn);
vec3_copy(mtx[2], zColumn);
vec3f_copy(mtx[0], xColumn);
vec3f_copy(mtx[1], yColumn);
vec3f_copy(mtx[2], zColumn);
mtx[3][0] = pos[0];
mtx[3][1] = (avgY < pos[1]) ? pos[1] : avgY;
@@ -861,7 +871,7 @@ s32 ray_surface_intersect(Vec3f orig, Vec3f dir, f32 dir_length, struct Surface
return FALSE;
}
// Successful contact
vec3_copy(add_dir, dir);
vec3f_copy(add_dir, dir);
vec3_mul_val(add_dir, *length);
vec3_sum(hit_pos, orig, add_dir);
return TRUE;
@@ -895,7 +905,7 @@ void find_surface_on_ray_list(struct SurfaceNode *list, Vec3f orig, Vec3f dir, f
if ((hit = ray_surface_intersect(orig, dir, dir_length, list->surface, chk_hit_pos, &length)) != 0) {
if (length <= *max_length) {
*hit_surface = list->surface;
vec3_copy(hit_pos, chk_hit_pos);
vec3f_copy(hit_pos, chk_hit_pos);
*max_length = length;
}
}
@@ -944,7 +954,7 @@ void find_surface_on_ray(Vec3f orig, Vec3f dir, struct Surface **hit_surface, Ve
// Get normalized direction
dir_length = vec3f_length(dir);
max_length = dir_length;
vec3_copy(normalized_dir, dir);
vec3f_copy(normalized_dir, dir);
vec3f_normalize(normalized_dir);
// Get our cell coordinate