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ARM: SIMD assembly optimization for function BlitARGBto565PixelAlpha
This commit is contained in:
Ben Avison
@@ -166,3 +166,200 @@ generate_composite_function \
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RGBtoRGBPixelAlpha_process_tail
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/******************************************************************************/
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.macro ARGBto565PixelAlpha_init
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line_saved_regs STRIDE_D, STRIDE_S, ORIG_W
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mov MASK, #0x001f
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mov STRIDE_M, #0x0010
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orr MASK, MASK, MASK, lsl #16
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orr STRIDE_M, STRIDE_M, STRIDE_M, lsl #16
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.endm
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.macro ARGBto565PixelAlpha_newline
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mov STRIDE_S, #0x0200
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.endm
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/* On entry:
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* s1 holds 1 32bpp source pixel
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* d holds 1 16bpp destination pixel
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* rbmask, rbhalf, ghalf hold 0x001f001f, 0x00100010, 0x00000200 respectively
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* other registers are temporaries
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* On exit:
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* Constant registers preserved
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*/
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.macro ARGBto565PixelAlpha_1pixel_translucent s, d, rbmask, rbhalf, ghalf, alpha, rb, g, misc
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mov alpha, s, lsr #27
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and misc, s, #0xfc00
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and g, d, #0x07e0
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pkhbt rb, d, d, lsl #5
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rsb misc, g, misc, lsr #5
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and s, rbmask, s, lsr #3
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and rb, rbmask, rb
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sub s, s, rb
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smlabb misc, misc, alpha, ghalf
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mla s, s, alpha, rbhalf
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add misc, misc, misc, lsl #5
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add g, g, misc, asr #10
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add s, s, s, lsl #5
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and g, g, #0x07e0
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add rb, rb, s, asr #10
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and rb, rb, rbmask
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pkhbt rb, rb, rb, lsl #11
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orr d, rb, g
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orr d, d, rb, lsr #16
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.endm
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/* On entry:
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* s1 holds 1 32bpp source pixel
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* d holds 1 16bpp destination pixel
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* rbmask holds 0x001f001f
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* On exit:
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* Constant registers preserved
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*/
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.macro ARGBto565PixelAlpha_1pixel_opaque s, d, rbmask
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and d, rbmask, s, lsr #3
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and s, s, #0xfc00
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orr d, d, d, lsr #5
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orr d, d, s, lsr #5
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.endm
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/* On entry:
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* s1, s2 hold 2 32bpp source pixels
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* d holds 2 16bpp destination pixels
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* rbmask, rbhalf, ghalf hold 0x001f001f, 0x00100010, 0x00000200 respectively
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* other registers are temporaries
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* On exit:
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* Constant registers preserved
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* Blended results have been written through destination pointer
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*/
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.macro ARGBto565PixelAlpha_2pixels_translucent s1, s2, d, rbmask, rbhalf, ghalf, alpha, rb, g, misc
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mov alpha, s1, lsr #27
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and misc, s1, #0xfc00
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and g, d, #0x07e0
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pkhbt rb, d, d, lsl #5
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rsb misc, g, misc, lsr #5
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and s1, rbmask, s1, lsr #3
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and rb, rbmask, rb
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sub s1, s1, rb
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smlabb misc, misc, alpha, ghalf
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mla s1, s1, alpha, rbhalf
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uxth d, d, ror #16
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add misc, misc, misc, lsl #5
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mov alpha, s2, lsr #27
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add g, g, misc, asr #10
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add s1, s1, s1, lsl #5
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and g, g, #0x07e0
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add rb, rb, s1, asr #10
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and rb, rb, rbmask
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and misc, s2, #0xfc00
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pkhbt rb, rb, rb, lsl #11
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and s1, d, #0x07e0
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pkhbt d, d, d, lsl #5
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rsb misc, s1, misc, lsr #5
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and s2, rbmask, s2, lsr #3
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and d, rbmask, d
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sub s2, s2, d
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smlabb misc, misc, alpha, ghalf
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mla s2, s2, alpha, rbhalf
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orr alpha, rb, g
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add misc, misc, misc, lsl #5
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orr alpha, alpha, rb, lsr #16
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add s1, s1, misc, asr #10
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add s2, s2, s2, lsl #5
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and s1, s1, #0x07e0
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add d, d, s2, asr #10
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and d, d, rbmask
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strh alpha, [DST, #-4]
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pkhbt d, d, d, lsl #11
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orr alpha, d, s1
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orr alpha, alpha, d, lsr #16
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strh alpha, [DST, #-2]
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.endm
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/* On entry:
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* s1, s2 hold 2 32bpp source pixels
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* rbmask holds 0x001f001f
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* other registers are temporaries
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* On exit:
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* Constant registers preserved
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* Blended results have been written through destination pointer
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*/
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.macro ARGBto565PixelAlpha_2pixels_opaque s1, s2, d, rbmask, g
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and g, s1, #0xfc00
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and d, rbmask, s1, lsr #3
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and s1, rbmask, s2, lsr #3
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orr d, d, d, lsr #5
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orr d, d, g, lsr #5
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and g, s2, #0xfc00
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strh d, [DST, #-4]
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orr s1, s1, s1, lsr #5
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orr s1, s1, g, lsr #5
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strh s1, [DST, #-2]
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.endm
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.macro ARGBto565PixelAlpha_2pixels_head
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ldrd WK0, WK1, [SRC], #8
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ldr WK2, [DST], #4
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orr SCRATCH, WK0, WK1
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and ORIG_W, WK0, WK1
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tst SCRATCH, #0xff000000
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.endm
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.macro ARGBto565PixelAlpha_2pixels_tail
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beq 20f @ all transparent
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cmp ORIG_W, #0xff000000
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bhs 10f @ all opaque
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ARGBto565PixelAlpha_2pixels_translucent WK0, WK1, WK2, MASK, STRIDE_M, STRIDE_S, STRIDE_D, WK3, SCRATCH, ORIG_W
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b 20f
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10: ARGBto565PixelAlpha_2pixels_opaque WK0, WK1, WK2, MASK, SCRATCH
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20:
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.endm
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.macro ARGBto565PixelAlpha_process_head cond, numbytes, firstreg, unaligned_src, unaligned_mask, preload
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.if numbytes == 16
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ARGBto565PixelAlpha_2pixels_head
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ARGBto565PixelAlpha_2pixels_tail
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ARGBto565PixelAlpha_2pixels_head
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ARGBto565PixelAlpha_2pixels_tail
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.endif
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.if numbytes >= 8
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ARGBto565PixelAlpha_2pixels_head
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ARGBto565PixelAlpha_2pixels_tail
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.endif
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.if numbytes >= 4
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ARGBto565PixelAlpha_2pixels_head
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.else // numbytes == 2
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ldr WK0, [SRC], #4
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ldrh WK2, [DST], #2
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tst WK0, #0xff000000
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.endif
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.endm
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.macro ARGBto565PixelAlpha_process_tail cond, numbytes, firstreg
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.if numbytes >= 4
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ARGBto565PixelAlpha_2pixels_tail
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.else // numbytes == 2
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beq 20f @ all transparent
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cmp WK0, #0xff000000
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bhs 10f @ opaque
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ARGBto565PixelAlpha_1pixel_translucent WK0, WK2, MASK, STRIDE_M, STRIDE_S, STRIDE_D, WK3, SCRATCH, ORIG_W
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b 19f
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10: ARGBto565PixelAlpha_1pixel_opaque WK0, WK2, MASK
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19: strh WK2, [DST, #-2]
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20:
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.endif
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.endm
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generate_composite_function \
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BlitARGBto565PixelAlphaARMSIMDAsm, 32, 0, 16, \
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FLAG_DST_READWRITE | FLAG_BRANCH_OVER | FLAG_PROCESS_CORRUPTS_PSR | FLAG_PROCESS_DOES_STORE | FLAG_SPILL_LINE_VARS | FLAG_PROCESS_CORRUPTS_WK0, \
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2, /* prefetch distance */ \
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ARGBto565PixelAlpha_init, \
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ARGBto565PixelAlpha_newline, \
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nop_macro, /* cleanup */ \
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ARGBto565PixelAlpha_process_head, \
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ARGBto565PixelAlpha_process_tail
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