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ARM: SIMD optimization for 4:4:4:4 to 8:8:8:8 normal blits

Ben Avison 2019-10-24 21:15:50 -04:00
parent becc649ae2
commit 74846657ec
2 changed files with 76 additions and 0 deletions
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19
src/video/SDL_blit_N.c
View File

@ -950,6 +950,21 @@ Blit_BGR888_RGB888ARMSIMD(SDL_BlitInfo * info)
Blit_BGR888_RGB888ARMSIMDAsm(width, height, dstp, dststride, srcp, srcstride);
}
void Blit_RGB444_RGB888ARMSIMDAsm(int32_t w, int32_t h, uint32_t *dst, int32_t dst_stride, uint16_t *src, int32_t src_stride);
static void
Blit_RGB444_RGB888ARMSIMD(SDL_BlitInfo * info)
{
int32_t width = info->dst_w;
int32_t height = info->dst_h;
uint32_t *dstp = (uint32_t *)info->dst;
int32_t dststride = width + (info->dst_skip >> 2);
uint16_t *srcp = (uint16_t *)info->src;
int32_t srcstride = width + (info->src_skip >> 1);
Blit_RGB444_RGB888ARMSIMDAsm(width, height, dstp, dststride, srcp, srcstride);
}
#endif
/* This is now endian dependent */
@ -3226,6 +3241,10 @@ static const struct blit_table normal_blit_2[] = {
BLIT_FEATURE_HAS_ALTIVEC, Blit_RGB565_32Altivec, NO_ALPHA | COPY_ALPHA | SET_ALPHA},
{0x00007C00, 0x000003E0, 0x0000001F, 4, 0x00000000, 0x00000000, 0x00000000,
BLIT_FEATURE_HAS_ALTIVEC, Blit_RGB555_32Altivec, NO_ALPHA | COPY_ALPHA | SET_ALPHA},
#endif
#if SDL_ARM_SIMD_BLITTERS
{0x00000F00, 0x000000F0, 0x0000000F, 4, 0x00FF0000, 0x0000FF00, 0x000000FF,
BLIT_FEATURE_HAS_ARM_SIMD, Blit_RGB444_RGB888ARMSIMD, NO_ALPHA | COPY_ALPHA},
#endif
{0x0000F800, 0x000007E0, 0x0000001F, 4, 0x00FF0000, 0x0000FF00, 0x000000FF,
0, Blit_RGB565_ARGB8888, NO_ALPHA | COPY_ALPHA | SET_ALPHA},

57
src/video/arm/pixman-arm-simd-asm.S
View File

@ -473,3 +473,60 @@ generate_composite_function \
nop_macro, /* cleanup */ \
BGR888toRGB888_process_head, \
BGR888toRGB888_process_tail
/******************************************************************************/
.macro RGB444toRGB888_init
ldr MASK, =0x0f0f0f0f
/* Set GE[3:0] to 0101 so SEL instructions do what we want */
msr CPSR_s, #0x50000
.endm
.macro RGB444toRGB888_1pixel reg, mask, tmp
pkhbt WK&reg, WK&reg, WK&reg, lsl #12 @ 0000aaaarrrrggggaaaarrrrggggbbbb
and WK&reg, mask, WK&reg @ 0000aaaa0000gggg0000rrrr0000bbbb
orr WK&reg, WK&reg, WK&reg, lsl #4 @ aaaaaaaaggggggggrrrrrrrrbbbbbbbb
pkhtb tmp, WK&reg, WK&reg, asr #8 @ aaaaaaaaggggggggggggggggrrrrrrrr
pkhbt WK&reg, WK&reg, WK&reg, lsl #8 @ ggggggggrrrrrrrrrrrrrrrrbbbbbbbb
sel WK&reg, WK&reg, tmp @ aaaaaaaarrrrrrrrggggggggbbbbbbbb
.endm
.macro RGB444toRGB888_2pixels in, out1, out2, mask, tmp1, tmp2
and tmp1, mask, WK&in @ 0000RRRR0000BBBB0000rrrr0000bbbb
and tmp2, mask, WK&in, lsr #4 @ 0000AAAA0000GGGG0000aaaa0000gggg
orr tmp1, tmp1, tmp1, lsl #4 @ RRRRRRRRBBBBBBBBrrrrrrrrbbbbbbbb
orr tmp2, tmp2, tmp2, lsl #4 @ AAAAAAAAGGGGGGGGaaaaaaaagggggggg
pkhtb WK&out2, tmp2, tmp1, asr #16 @ AAAAAAAAGGGGGGGGRRRRRRRRBBBBBBBB
pkhbt WK&out1, tmp1, tmp2, lsl #16 @ aaaaaaaaggggggggrrrrrrrrbbbbbbbb
pkhtb tmp2, WK&out2, WK&out2, asr #8 @ AAAAAAAAGGGGGGGGGGGGGGGGRRRRRRRR
pkhtb tmp1, WK&out1, WK&out1, asr #8 @ aaaaaaaaggggggggggggggggrrrrrrrr
pkhbt WK&out1, WK&out1, WK&out1, lsl #8 @ ggggggggrrrrrrrrrrrrrrrrbbbbbbbb
pkhbt WK&out2, WK&out2, WK&out2, lsl #8 @ GGGGGGGGRRRRRRRRRRRRRRRRBBBBBBBB
sel WK&out1, WK&out1, tmp1 @ aaaaaaaarrrrrrrrggggggggbbbbbbbb
sel WK&out2, WK&out2, tmp2 @ AAAAAAAARRRRRRRRGGGGGGGGBBBBBBBB
.endm
.macro RGB444toRGB888_process_head cond, numbytes, firstreg, unaligned_src, unaligned_mask, preload
pixld cond, numbytes/2, firstreg, SRC, unaligned_src
.endm
.macro RGB444toRGB888_process_tail cond, numbytes, firstreg
.if numbytes >= 8
.if numbytes == 16
RGB444toRGB888_2pixels %(firstreg+1), %(firstreg+2), %(firstreg+3), MASK, STRIDE_M, SCRATCH
.endif
RGB444toRGB888_2pixels %(firstreg+0), %(firstreg+0), %(firstreg+1), MASK, STRIDE_M, SCRATCH
.else @ numbytes == 4
RGB444toRGB888_1pixel %(firstreg+0), MASK, SCRATCH
.endif
.endm
generate_composite_function \
Blit_RGB444_RGB888ARMSIMDAsm, 16, 0, 32, \
FLAG_DST_WRITEONLY | FLAG_BRANCH_OVER, \
2, /* prefetch distance */ \
RGB444toRGB888_init, \
nop_macro, /* newline */ \
nop_macro, /* cleanup */ \
RGB444toRGB888_process_head, \
RGB444toRGB888_process_tail