From: notaz <notasas@gmail.com>
Date: Wed, 22 Aug 2012 22:28:50 +0000 (+0300)
Subject: unify NEON code, use preload
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a1eff5db323aedd15ed6fbfd13d06273b54d2d6f;p=sdl_omap.git

unify NEON code, use preload
---

diff --git a/src/video/SDL_blit_neon.S b/src/video/SDL_blit_neon.S
index 2823bce..af9af36 100644
--- a/src/video/SDL_blit_neon.S
+++ b/src/video/SDL_blit_neon.S
@@ -1,5 +1,5 @@
 /*
- * (C) Gražvydas "notaz" Ignotas, 2011
+ * (C) Gražvydas "notaz" Ignotas, 2011,2012
  *
  * This work is licensed under the terms of any of these licenses
  * (at your option):
@@ -28,49 +28,23 @@
     b          0b
 .endm
 
-@ void *dst, const void *src, int count
-.macro do_argb_alpha bgr2rgb
-    mov        r3, #0xff
-    vdup.i16   q12, r3
-0:
-    vld4.8     {d4-d7}, [r1]!
-    vld4.8     {d0-d3}, [r0]
-.if \bgr2rgb
-    vswp       d4, d6		@ BGR->RGB
-.endif
-    vmovl.u8   q11, d7
-    @ d = (((s-d)*a+255)>>8)+d
-    vsubl.u8   q8, d4, d0
-    vsubl.u8   q9, d5, d1
-    vsubl.u8   q10,d6, d2
-    vmul.s16   q8, q8, q11
-    vmul.s16   q9, q9, q11
-    vmul.s16   q10,q10,q11
-    vaddhn.i16 d4, q8, q12
-    vaddhn.i16 d5, q9, q12
-    vaddhn.i16 d6, q10,q12
-    vadd.i8    q2, q0
-    vadd.i8    d6, d2
-    vmov.i8    d7, d3
-    subs       r2, r2, #8
-    blt        do_argb_finish
-    vst4.8     {d4-d7}, [r0]!
-    bxeq       lr
-    nop
-    b          0b
-.endm
-
-
-@ void *dst, const void *src, int count, uint alpha
-.macro do_argb_alphaS bgr2rgb
+@ void *dst, const void *src, int count, uint global_alpha
+.macro do_argb_alpha bgr2rgb global_alpha
     mov        r12, #0xff
+.if \global_alpha
     vdup.16    q11, r3
-    vdup.16    q12, r12
+.endif
+    vdup.i16   q12, r12
 0:
+    pld        [r1, #64*2]
+    pld        [r0, #64*2]
     vld4.8     {d4-d7}, [r1]!
     vld4.8     {d0-d3}, [r0]
 .if \bgr2rgb
     vswp       d4, d6		@ BGR->RGB
+.endif
+.if !\global_alpha
+    vmovl.u8   q11, d7
 .endif
     @ d = (((s-d)*a+255)>>8)+d
     vsubl.u8   q8, d4, d0
@@ -132,18 +106,18 @@ neon_ABGRtoXRGB:
 
 .global neon_ARGBtoXRGBalpha
 neon_ARGBtoXRGBalpha:
-    do_argb_alpha 0
+    do_argb_alpha 0, 0
 
 .global neon_ABGRtoXRGBalpha
 neon_ABGRtoXRGBalpha:
-    do_argb_alpha 1
+    do_argb_alpha 1, 0
 
 .global neon_ARGBtoXRGBalphaS
 neon_ARGBtoXRGBalphaS:
-    do_argb_alphaS 0
+    do_argb_alpha 0, 1
 
 .global neon_ABGRtoXRGBalphaS
 neon_ABGRtoXRGBalphaS:
-    do_argb_alphaS 1
+    do_argb_alpha 1, 1
 
 @ vim:filetype=armasm