diff options
Diffstat (limited to 'plugins/gpulib/cspace_neon.s')
| -rw-r--r-- | plugins/gpulib/cspace_neon.s | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/plugins/gpulib/cspace_neon.s b/plugins/gpulib/cspace_neon.s new file mode 100644 index 0000000..abc0381 --- /dev/null +++ b/plugins/gpulib/cspace_neon.s @@ -0,0 +1,132 @@ +/* + * (C) GraÅžvydas "notaz" Ignotas, 2010 + * + * This work is licensed under the terms of any of these licenses + * (at your option): + * - GNU GPL, version 2 or later. + * - GNU LGPL, version 2.1 or later. + * See the COPYING file in the top-level directory. + */ + +.text +.align 2 + +.global bgr555_to_rgb565 +bgr555_to_rgb565: + pld [r1] + mov r3, #0x07c0 + vdup.16 q15, r3 + subs r2, r2, #64 + blt btr16_end64 +0: + pld [r1, #64*2] + vldmia r1!, {q0-q3} + vshl.u16 q4, q0, #11 + vshl.u16 q5, q1, #11 + vshl.u16 q6, q2, #11 + vshl.u16 q7, q3, #11 + vsri.u16 q4, q0, #10 + vsri.u16 q5, q1, #10 + vsri.u16 q6, q2, #10 + vsri.u16 q7, q3, #10 + vshl.u16 q0, q0, #1 + vshl.u16 q1, q1, #1 + vshl.u16 q2, q2, #1 + vshl.u16 q3, q3, #1 + vbit q4, q0, q15 + vbit q5, q1, q15 + vbit q6, q2, q15 + vbit q7, q3, q15 + vstmia r0!, {q4-q7} + subs r2, r2, #64 + bge 0b + +btr16_end64: + adds r2, r2, #64 + bxeq lr + subs r2, r2, #16 + blt btr16_end16 + + @ handle the remainder (reasonably rare) +0: + vld1.16 {q0}, [r1]! + vshl.u16 q1, q0, #11 + vshl.u16 q2, q0, #1 + vsri.u16 q1, q0, #10 + vbit q1, q2, q15 + subs r2, r2, #16 + vst1.16 {q1}, [r0]! + bge 0b + +btr16_end16: + adds r2, r2, #16 + bxeq lr + subs r2, r2, #8 + bxlt lr + + @ very rare + vld1.16 d0, [r1]! + vshl.u16 d1, d0, #11 + vshl.u16 d2, d0, #1 + vsri.u16 d1, d0, #10 + vbit d1, d2, d30 + vst1.16 d1, [r0]! + bx lr + + +.global bgr888_to_rgb888 +bgr888_to_rgb888: + pld [r1] + @ r2 /= 48 + mov r2, r2, lsr #4 + movw r3, #0x5556 + movt r3, #0x5555 + umull r12,r2, r3, r2 +0: + pld [r1, #48*3] + vld3.8 {d0-d2}, [r1, :64]! + vld3.8 {d3-d5}, [r1, :64]! + vswp d0, d2 + vswp d3, d5 + vst3.8 {d0-d2}, [r0, :64]! + vst3.8 {d3-d5}, [r0, :64]! + subs r2, r2, #1 + bne 0b + + bx lr + + +.global bgr888_to_rgb565 +bgr888_to_rgb565: + pld [r1] + @ r2 /= 48 + mov r2, r2, lsr #4 + movw r3, #0x5556 + movt r3, #0x5555 + umull r12,r2, r3, r2 + + mov r3, #0x07e0 + vdup.16 q15, r3 +0: + pld [r1, #48*3] + vld3.8 {d1-d3}, [r1, :64]! + vld3.8 {d5-d7}, [r1, :64]! + + vshll.u8 q8, d2, #3 @ g + vshll.u8 q9, d6, #3 + vshr.u8 d0, d3, #3 @ b + vshr.u8 d4, d7, #3 + vzip.8 d0, d1 @ rb + vzip.8 d4, d5 + vbit q0, q8, q15 + vbit q2, q9, q15 + + vstmia r0!, {d0,d1} + vstmia r0!, {d4,d5} + subs r2, r2, #1 + bne 0b + + bx lr + + +@ vim:filetype=armasm |