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authorMarek Olšák <[email protected]>2017-06-09 18:46:07 +0200
committerMarek Olšák <[email protected]>2017-06-27 19:55:09 +0200
commit4a10d6154e1a6086e1eecf0e17ab63cc41862ea6 (patch)
treed8166d615f4771bc96147185dc12a52e59776c4a /include/c99_math.h
parentaef998fe4b7551faf8a44409aa74554b45d2b67c (diff)
radeonsi: move instance divisors into a constant buffer
Shader key size: 107 -> 47 Divisors of 0 and 1 are encoded in the shader key. Greater instance divisors are loaded from a constant buffer. The shader code doing the division is huge. Is it something we need to worry about? Does any app use instance divisors >= 2? VS prolog disassembly: s_load_dwordx4 s[12:15], s[0:1], 0x80 ; C00A0300 00000080 s_nop 0 ; BF800000 s_waitcnt lgkmcnt(0) ; BF8C007F s_buffer_load_dword s14, s[12:15], 0x4 ; C0220386 00000004 s_waitcnt lgkmcnt(0) ; BF8C007F v_cvt_f32_u32_e32 v4, s14 ; 7E080C0E v_rcp_iflag_f32_e32 v4, v4 ; 7E084704 v_mul_f32_e32 v4, 0x4f800000, v4 ; 0A0808FF 4F800000 v_cvt_u32_f32_e32 v4, v4 ; 7E080F04 v_mul_hi_u32 v5, v4, s14 ; D2860005 00001D04 v_mul_lo_i32 v6, v4, s14 ; D2850006 00001D04 v_cmp_eq_u32_e64 s[12:13], 0, v5 ; D0CA000C 00020A80 v_sub_i32_e32 v5, vcc, 0, v6 ; 340A0C80 v_cndmask_b32_e64 v5, v6, v5, s[12:13] ; D1000005 00320B06 v_mul_hi_u32 v5, v5, v4 ; D2860005 00020905 v_add_i32_e32 v6, vcc, v5, v4 ; 320C0905 v_subrev_i32_e32 v4, vcc, v5, v4 ; 36080905 v_cndmask_b32_e64 v4, v4, v6, s[12:13] ; D1000004 00320D04 v_mul_hi_u32 v5, v4, v1 ; D2860005 00020304 v_add_i32_e32 v4, vcc, s8, v0 ; 32080008 v_mul_lo_i32 v6, v5, s14 ; D2850006 00001D05 v_add_i32_e32 v7, vcc, 1, v5 ; 320E0A81 v_cmp_ge_u32_e64 s[12:13], v1, v6 ; D0CE000C 00020D01 v_sub_i32_e32 v6, vcc, v1, v6 ; 340C0D01 v_cmp_le_u32_e32 vcc, s14, v6 ; 7D960C0E v_cndmask_b32_e64 v8, 0, -1, s[12:13] ; D1000008 00318280 v_cndmask_b32_e64 v6, 0, -1, vcc ; D1000006 01A98280 v_and_b32_e32 v6, v8, v6 ; 260C0D08 v_cmp_eq_u32_e32 vcc, 0, v6 ; 7D940C80 v_cndmask_b32_e32 v6, v7, v5, vcc ; 000C0B07 v_add_i32_e32 v5, vcc, -1, v5 ; 320A0AC1 v_cmp_eq_u32_e32 vcc, 0, v8 ; 7D941080 v_cndmask_b32_e32 v5, v6, v5, vcc ; 000A0B06 v_add_i32_e32 v5, vcc, s9, v5 ; 320A0A09 v2: set prefer_mono for fetched instance divisors Reviewed-by: Nicolai Hähnle <[email protected]>
Diffstat (limited to 'include/c99_math.h')
0 files changed, 0 insertions, 0 deletions