Julian

@schneckerstein.bsky.social

384 Followers 433 Following

-10x Code-Person @symmetrybreak.bsky.social Working on Misgiven and Tasty Grass Shader

#include <xmmintrin.h> void Distances_SIMD(void) { float points_X_arr[] = {16.0f, 00.0f, 10.0f, 43.0f}; float points_Y_arr[] = {00.0f, 16.0f, 10.0f, 08.0f}; __m128 points_X = _mm_load_ps(points_X_arr); __m128 points_Y = _mm_load_ps(points_Y_arr); __m128 xSqr = _mm_mul_ps(points_X, points_X); __m128 ySqr = _mm_mul_ps(points_Y, points_Y); __m128 length = _mm_sqrt_ps(_mm_add_ps(xSqr, ySqr)); float lengths[4]; _mm_store_ps(lengths, length); for(int i = 0; i < 4; i++){ printf("Point = (%f,%f), Length = %f.\n", points_X_arr[i], points_Y_arr[i], length[i]); } }
void CircleArea_SIMD(void) { float circlesRadii[] = {1.0f, 2.0f, 0.5f, 4.0f}; __m128 circlesRadius = _mm_load_ps(circlesRadii); const float pi = 3.141f; __m128 pi_wide = _mm_load_ps1(&pi); // caluclate: pi * radius * radius, but for 4 radii at once. __m128 areas = _mm_mul_ps(pi_wide, _mm_mul_ps(circlesRadius, circlesRadius)); float areaScalar[4]; _mm_store_ps(areaScalar, areas); for(int i = 0; i < 4; i++){ printf("Radius = %f, Area = %f.\n", circlesRadii[i], areaScalar[i]); } }