ogl_beamforming

Ultrasound Beamforming Implemented with OpenGL
git clone anongit@rnpnr.xyz:ogl_beamforming.git
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intrinsics.c (2299B)


      1 #define FORCE_INLINE inline __attribute__((always_inline))
      2 
      3 /* TODO(rnp): msvc probably won't build this but there are other things preventing that as well */
      4 #define sqrt_f32(a)     __builtin_sqrtf(a)
      5 #define atan2_f32(y, x) __builtin_atan2f(y, x)
      6 
      7 static FORCE_INLINE u32
      8 clz_u32(u32 a)
      9 {
     10 	u32 result = 32;
     11 	if (a) result = __builtin_clz(a);
     12 	return result;
     13 }
     14 
     15 static FORCE_INLINE u32
     16 ctz_u32(u32 a)
     17 {
     18 	u32 result = 32;
     19 	if (a) result = __builtin_ctz(a);
     20 	return result;
     21 }
     22 
     23 #ifdef __ARM_ARCH_ISA_A64
     24 /* TODO? debuggers just loop here forever and need a manual PC increment (step over) */
     25 #define debugbreak() asm volatile ("brk 0xf000")
     26 
     27 /* NOTE(rnp): we are only doing a handful of f32x4 operations so we will just use NEON and do
     28  * the macro renaming thing. If you are implementing a serious wide vector operation you should
     29  * use SVE(2) instead. The semantics are different however and the code will be written for an
     30  * arbitrary vector bit width. In that case you will also need x86_64 code for determining
     31  * the supported vector width (ideally at runtime though that may not be possible).
     32  */
     33 #include <arm_neon.h>
     34 typedef float32x4_t f32x4;
     35 typedef int32x4_t   i32x4;
     36 
     37 #define cvt_i32x4_f32x4(a)    vcvtq_f32_s32(a)
     38 #define cvt_f32x4_i32x4(a)    vcvtq_s32_f32(a)
     39 #define dup_f32x4(f)          vdupq_n_f32(f)
     40 #define load_f32x4(a)         vld1q_f32(a)
     41 #define load_i32x4(a)         vld1q_s32(a)
     42 #define mul_f32x4(a, b)       vmulq_f32(a, b)
     43 #define set_f32x4(a, b, c, d) vld1q_f32((f32 []){d, c, b, a})
     44 #define sqrt_f32x4(a)         vsqrtq_f32(a)
     45 #define store_f32x4(a, o)     vst1q_f32(o, a)
     46 #define store_i32x4(a, o)     vst1q_s32(o, a)
     47 
     48 #elif __x86_64__
     49 #include <immintrin.h>
     50 typedef __m128  f32x4;
     51 typedef __m128i i32x4;
     52 
     53 #define cvt_i32x4_f32x4(a)    _mm_cvtepi32_ps(a)
     54 #define cvt_f32x4_i32x4(a)    _mm_cvtps_epi32(a)
     55 #define dup_f32x4(f)          _mm_set1_ps(f)
     56 #define load_f32x4(a)         _mm_loadu_ps(a)
     57 #define load_i32x4(a)         _mm_loadu_si128((i32x4 *)a)
     58 #define mul_f32x4(a, b)       _mm_mul_ps(a, b)
     59 #define set_f32x4(a, b, c, d) _mm_set_ps(a, b, c, d)
     60 #define sqrt_f32x4(a)         _mm_sqrt_ps(a)
     61 #define store_f32x4(a, o)     _mm_storeu_ps(o, a)
     62 #define store_i32x4(a, o)     _mm_storeu_si128((i32x4 *)o, a)
     63 
     64 #define debugbreak() asm volatile ("int3; nop")
     65 
     66 #endif