Fix libimg to execute emms after mmx code

Also, remove an emms hack from Dino game.
Fix #98.
This commit is contained in:
2025-02-24 01:40:31 +00:00
parent 54669d62b4
commit a11466d56b
6 changed files with 175 additions and 128 deletions

View File

@@ -1,76 +0,0 @@
match =MMX, COMPOSITE_MODE {include 'blend_mmx.asm'}
match =SSE, COMPOSITE_MODE {include 'blend_sse.asm'}
;;============================================================================;;
proc img.blend uses ebx esi edi, _bottom, _top, _xbottom, _ybottom, \ ;///////;;
_xtop, _ytop, _width, _height ;//////////////;;
;;----------------------------------------------------------------------------;;
;? Alpha blend _top image to _bottom one (both must be of type Image.bpp32) ;;
;;----------------------------------------------------------------------------;;
;> _bottom = pointer to bottom image (will be changed) ;;
;> _top = pointer to top image (unchanged) ;;
;> _xbottom = x coord inside _bottom image where to put _top image ;;
;> _ybottom = y coord inside _bottom image where to put _top image ;;
;> _xtop = x coord inside _top image to start from ;;
;> _ytop = y coord inside _top image to start from ;;
;> _width = width of _top image area to put to _bottom image ;;
;> _height = height of _top image area to put to _bottom image ;;
;;----------------------------------------------------------------------------;;
;< eax = 0 (fail) / _bottom (ok) ;;
;;============================================================================;;
mov esi, [_top]
mov edi, [_bottom]
mov eax, [esi+Image.Width]
sub eax, [_width]
shl eax, 2
push eax
mov eax, [edi+Image.Width]
sub eax, [_width]
shl eax, 2
push eax
mov eax, [_ytop]
imul eax, [esi+Image.Width]
add eax, [_xtop]
shl eax, 2
mov esi, [esi+Image.Data]
add esi, eax
mov eax, [_ybottom]
imul eax, [edi+Image.Width]
add eax, [_xbottom]
shl eax, 2
mov edi, [edi+Image.Data]
add edi, eax
stdcall xcf._.composite_rgb_00, [_width], [_height]
mov eax, [_bottom]
ret
endp
xcf._.composite_table.begin:
.p00 dd 00, xcf._.composite_rgb_00, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Normal
.p01 dd 01, xcf._.composite_rgb_01, xcf._.composite_gray_01, xcf._.composite_gray_01 ; Dissolve : random dithering to discrete alpha
; .p02 dd 02, xcf._.composite_rgb_02, 0, xcf._.composite_indexed_02 ; Behind : not selectable in the GIMP UI. not implemented
.p03 dd 03, xcf._.composite_rgb_03, xcf._.composite_rgb_03, xcf._.composite_indexed_00 ; Multiply
.p04 dd 04, xcf._.composite_rgb_04, xcf._.composite_rgb_04, xcf._.composite_indexed_00 ; Screen
.p05 dd 05, xcf._.composite_rgb_05, xcf._.composite_rgb_05, xcf._.composite_indexed_00 ; Overlay
.p06 dd 06, xcf._.composite_rgb_06, xcf._.composite_rgb_06, xcf._.composite_indexed_00 ; Difference
.p07 dd 07, xcf._.composite_rgb_07, xcf._.composite_rgb_07, xcf._.composite_indexed_00 ; Addition
.p08 dd 08, xcf._.composite_rgb_08, xcf._.composite_rgb_08, xcf._.composite_indexed_00 ; Subtract
.p09 dd 09, xcf._.composite_rgb_09, xcf._.composite_rgb_09, xcf._.composite_indexed_00 ; Darken Only
.p10 dd 10, xcf._.composite_rgb_10, xcf._.composite_rgb_10, xcf._.composite_indexed_00 ; Lighten Only
.p11 dd 11, xcf._.composite_rgb_11, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Hue (H of HSV)
.p12 dd 12, xcf._.composite_rgb_12, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Saturation (S of HSV)
.p13 dd 13, xcf._.composite_rgb_13, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Color (H and S of HSL)
.p14 dd 14, xcf._.composite_rgb_14, xcf._.composite_gray_00, xcf._.composite_indexed_00 ; Value (V of HSV)
.p15 dd 15, xcf._.composite_rgb_15, xcf._.composite_rgb_15, xcf._.composite_indexed_00 ; Divide
.p16 dd 16, xcf._.composite_rgb_16, xcf._.composite_rgb_16, xcf._.composite_indexed_00 ; Dodge
.p17 dd 17, xcf._.composite_rgb_17, xcf._.composite_rgb_17, xcf._.composite_indexed_00 ; Burn
.p18 dd 18, xcf._.composite_rgb_18, xcf._.composite_rgb_18, xcf._.composite_indexed_00 ; Hard Light
.p19 dd 19, xcf._.composite_rgb_05, xcf._.composite_rgb_05, xcf._.composite_indexed_00 ; Soft Light : XCF >= 2 only ('soft light' == 'overlay')
.p20 dd 20, xcf._.composite_rgb_20, xcf._.composite_rgb_20, xcf._.composite_indexed_00 ; Grain Extract : XCF >= 2 only
.p21 dd 21, xcf._.composite_rgb_21, xcf._.composite_rgb_21, xcf._.composite_indexed_00 ; Grain Merge : XCF >= 2 only
xcf._.composite_table.end:

View File

@@ -17,6 +17,56 @@
;; ;;
;;================================================================================================;;
;;============================================================================;;
proc img.blend uses ebx esi edi, _bottom, _top, _xbottom, _ybottom, \ ;///////;;
_xtop, _ytop, _width, _height ;//////////////;;
;;----------------------------------------------------------------------------;;
;? Alpha blend _top image to _bottom one (both must be of type Image.bpp32) ;;
;;----------------------------------------------------------------------------;;
;> _bottom = pointer to bottom image (will be changed) ;;
;> _top = pointer to top image (unchanged) ;;
;> _xbottom = x coord inside _bottom image where to put _top image ;;
;> _ybottom = y coord inside _bottom image where to put _top image ;;
;> _xtop = x coord inside _top image to start from ;;
;> _ytop = y coord inside _top image to start from ;;
;> _width = width of _top image area to put to _bottom image ;;
;> _height = height of _top image area to put to _bottom image ;;
;;----------------------------------------------------------------------------;;
;< eax = 0 (fail) / _bottom (ok) ;;
;;============================================================================;;
mov esi, [_top]
mov edi, [_bottom]
mov eax, [esi+Image.Width]
sub eax, [_width]
shl eax, 2
push eax
mov eax, [edi+Image.Width]
sub eax, [_width]
shl eax, 2
push eax
mov eax, [_ytop]
imul eax, [esi+Image.Width]
add eax, [_xtop]
shl eax, 2
mov esi, [esi+Image.Data]
add esi, eax
mov eax, [_ybottom]
imul eax, [edi+Image.Width]
add eax, [_xbottom]
shl eax, 2
mov edi, [edi+Image.Data]
add edi, eax
stdcall img._.composite_rgb_00, [_width], [_height]
mov eax, [_bottom]
emms
ret
endp
proc xcf._.blend_rgb
xchg al, bh
@@ -158,7 +208,7 @@ proc xcf._.merge_8a _copy_width, _copy_height, _img_total_bpl, _bottom_total_bpl
endp
proc xcf._.composite_rgb_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_rgb_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
.line:
mov ecx, [_copy_width]
@@ -219,7 +269,7 @@ proc xcf._.composite_rgb_00 _copy_width, _copy_height, _bottom_total_bpl, _img_t
endp
proc xcf._.composite_gray_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_gray_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
.line:
mov ecx, [_copy_width]
@@ -277,7 +327,7 @@ proc xcf._.composite_gray_00 _copy_width, _copy_height, _bottom_total_bpl, _img_
endp
proc xcf._.composite_indexed_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_indexed_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
.line:
mov ecx, [_copy_width]
@@ -302,7 +352,7 @@ proc xcf._.composite_indexed_00 _copy_width, _copy_height, _bottom_total_bpl, _i
endp
proc xcf._.composite_rgb_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_rgb_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
pushad
pxor mm4, mm4
@@ -349,7 +399,7 @@ proc xcf._.composite_rgb_01 _copy_width, _copy_height, _bottom_total_bpl, _img_t
endp
proc xcf._.composite_gray_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_gray_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
pushad
pxor mm4, mm4
@@ -394,7 +444,7 @@ proc xcf._.composite_gray_01 _copy_width, _copy_height, _bottom_total_bpl, _img_
endp
proc xcf._.composite_rgb_03 ; Multiply
proc img._.composite_rgb_03 ; Multiply
punpcklbw mm2, mm0
punpcklbw mm3, mm0
@@ -405,7 +455,7 @@ proc xcf._.composite_rgb_03 ; Multiply
endp
proc xcf._.composite_rgb_04 ; Screen
proc img._.composite_rgb_04 ; Screen
punpcklbw mm2, mm0
punpcklbw mm3, mm0
@@ -422,7 +472,7 @@ proc xcf._.composite_rgb_04 ; Screen
endp
proc xcf._.composite_rgb_05 ; Overlay
proc img._.composite_rgb_05 ; Overlay
punpcklbw mm2, mm0
punpcklbw mm3, mm0
@@ -438,7 +488,7 @@ proc xcf._.composite_rgb_05 ; Overlay
endp
proc xcf._.composite_rgb_06 ; Difference
proc img._.composite_rgb_06 ; Difference
movq mm4, mm3
pminub mm4, mm2
@@ -451,7 +501,7 @@ proc xcf._.composite_rgb_06 ; Difference
endp
proc xcf._.composite_rgb_07 ; Addition
proc img._.composite_rgb_07 ; Addition
paddusb mm3, mm2
punpcklbw mm2, mm0
@@ -461,7 +511,7 @@ proc xcf._.composite_rgb_07 ; Addition
endp
proc xcf._.composite_rgb_08 ; Subtract
proc img._.composite_rgb_08 ; Subtract
movq mm4, mm2
psubusb mm4, mm3
@@ -473,7 +523,7 @@ proc xcf._.composite_rgb_08 ; Subtract
endp
proc xcf._.composite_rgb_09 ; Darken Only
proc img._.composite_rgb_09 ; Darken Only
pminub mm3, mm2
punpcklbw mm2, mm0
@@ -483,7 +533,7 @@ proc xcf._.composite_rgb_09 ; Darken Only
endp
proc xcf._.composite_rgb_10 ; Lighten Only
proc img._.composite_rgb_10 ; Lighten Only
pmaxub mm3, mm2
punpcklbw mm2, mm0
@@ -493,7 +543,7 @@ proc xcf._.composite_rgb_10 ; Lighten Only
endp
proc xcf._.composite_rgb_11 ; Hue (H of HSV)
proc img._.composite_rgb_11 ; Hue (H of HSV)
push eax ebx ecx edx
movd eax, mm3
@@ -527,7 +577,7 @@ proc xcf._.composite_rgb_11 ; Hue (H of HSV)
endp
proc xcf._.composite_rgb_12 ; Saturation (S of HSV)
proc img._.composite_rgb_12 ; Saturation (S of HSV)
push eax ebx ecx edx
movd eax, mm3
@@ -559,7 +609,7 @@ proc xcf._.composite_rgb_12 ; Saturation (S of HSV)
endp
proc xcf._.composite_rgb_13 ; Color (H and S of HSL)
proc img._.composite_rgb_13 ; Color (H and S of HSL)
push eax ebx ecx edx
movd eax, mm3
@@ -586,7 +636,7 @@ proc xcf._.composite_rgb_13 ; Color (H and S of HSL)
endp
proc xcf._.composite_rgb_14 ; Value (V of HSV)
proc img._.composite_rgb_14 ; Value (V of HSV)
push eax ebx ecx edx
movd eax, mm3
@@ -617,7 +667,7 @@ proc xcf._.composite_rgb_14 ; Value (V of HSV)
endp
proc xcf._.composite_rgb_15 ; Divide
proc img._.composite_rgb_15 ; Divide
push eax ebx ecx
movd eax, mm3
@@ -665,7 +715,7 @@ proc xcf._.composite_rgb_15 ; Divide
endp
proc xcf._.composite_rgb_16 ; Dodge
proc img._.composite_rgb_16 ; Dodge
push eax ebx ecx
movd eax, mm3
@@ -715,7 +765,7 @@ proc xcf._.composite_rgb_16 ; Dodge
endp
proc xcf._.composite_rgb_17 ; Burn
proc img._.composite_rgb_17 ; Burn
push eax ebx ecx
movd eax, mm3
@@ -767,7 +817,7 @@ proc xcf._.composite_rgb_17 ; Burn
endp
proc xcf._.composite_rgb_18 ; Hard Light
proc img._.composite_rgb_18 ; Hard Light
push eax ebx ecx
movd eax, mm3
@@ -809,7 +859,7 @@ proc xcf._.composite_rgb_18 ; Hard Light
endp
proc xcf._.composite_rgb_20 ; Grain Extract
proc img._.composite_rgb_20 ; Grain Extract
punpcklbw mm2, mm0
punpcklbw mm3, mm0
@@ -823,7 +873,7 @@ proc xcf._.composite_rgb_20 ; Grain Extract
endp
proc xcf._.composite_rgb_21 ; Grain Merge
proc img._.composite_rgb_21 ; Grain Merge
punpcklbw mm2, mm0
punpcklbw mm3, mm0

View File

@@ -17,6 +17,55 @@
;; ;;
;;================================================================================================;;
;;============================================================================;;
proc img.blend uses ebx esi edi, _bottom, _top, _xbottom, _ybottom, \ ;///////;;
_xtop, _ytop, _width, _height ;//////////////;;
;;----------------------------------------------------------------------------;;
;? Alpha blend _top image to _bottom one (both must be of type Image.bpp32) ;;
;;----------------------------------------------------------------------------;;
;> _bottom = pointer to bottom image (will be changed) ;;
;> _top = pointer to top image (unchanged) ;;
;> _xbottom = x coord inside _bottom image where to put _top image ;;
;> _ybottom = y coord inside _bottom image where to put _top image ;;
;> _xtop = x coord inside _top image to start from ;;
;> _ytop = y coord inside _top image to start from ;;
;> _width = width of _top image area to put to _bottom image ;;
;> _height = height of _top image area to put to _bottom image ;;
;;----------------------------------------------------------------------------;;
;< eax = 0 (fail) / _bottom (ok) ;;
;;============================================================================;;
mov esi, [_top]
mov edi, [_bottom]
mov eax, [esi+Image.Width]
sub eax, [_width]
shl eax, 2
push eax
mov eax, [edi+Image.Width]
sub eax, [_width]
shl eax, 2
push eax
mov eax, [_ytop]
imul eax, [esi+Image.Width]
add eax, [_xtop]
shl eax, 2
mov esi, [esi+Image.Data]
add esi, eax
mov eax, [_ybottom]
imul eax, [edi+Image.Width]
add eax, [_xbottom]
shl eax, 2
mov edi, [edi+Image.Data]
add edi, eax
stdcall img._.composite_rgb_00, [_width], [_height]
mov eax, [_bottom]
ret
endp
proc xcf._.blend_rgb
push eax ebx
@@ -248,7 +297,7 @@ proc xcf._.merge_8a _copy_width, _copy_height, _img_total_bpl, _bottom_total_bpl
endp
proc xcf._.composite_rgb_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_rgb_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
pxor xmm0, xmm0
@@ -412,7 +461,7 @@ proc xcf._.composite_rgb_00 _copy_width, _copy_height, _bottom_total_bpl, _img_t
endp
proc xcf._.composite_gray_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_gray_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
.line:
mov ecx, [_copy_width]
@@ -470,7 +519,7 @@ proc xcf._.composite_gray_00 _copy_width, _copy_height, _bottom_total_bpl, _img_
endp
proc xcf._.composite_indexed_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_indexed_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
.line:
mov ecx, [_copy_width]
@@ -495,7 +544,7 @@ proc xcf._.composite_indexed_00 _copy_width, _copy_height, _bottom_total_bpl, _i
endp
proc xcf._.composite_rgb_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_rgb_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
pushad
pxor xmm4, xmm4
@@ -542,7 +591,7 @@ proc xcf._.composite_rgb_01 _copy_width, _copy_height, _bottom_total_bpl, _img_t
endp
proc xcf._.composite_gray_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
proc img._.composite_gray_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
pushad
pxor xmm4, xmm4
@@ -587,7 +636,7 @@ proc xcf._.composite_gray_01 _copy_width, _copy_height, _bottom_total_bpl, _img_
endp
proc xcf._.composite_rgb_03 ; Multiply
proc img._.composite_rgb_03 ; Multiply
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
@@ -598,7 +647,7 @@ proc xcf._.composite_rgb_03 ; Multiply
endp
proc xcf._.composite_rgb_04 ; Screen
proc img._.composite_rgb_04 ; Screen
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
@@ -614,7 +663,7 @@ proc xcf._.composite_rgb_04 ; Screen
endp
proc xcf._.composite_rgb_05 ; Overlay
proc img._.composite_rgb_05 ; Overlay
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
@@ -630,7 +679,7 @@ proc xcf._.composite_rgb_05 ; Overlay
endp
proc xcf._.composite_rgb_06 ; Difference
proc img._.composite_rgb_06 ; Difference
movdqa xmm4, xmm3
pminub xmm4, xmm2
@@ -643,7 +692,7 @@ proc xcf._.composite_rgb_06 ; Difference
endp
proc xcf._.composite_rgb_07 ; Addition
proc img._.composite_rgb_07 ; Addition
paddusb xmm3, xmm2
punpcklbw xmm2, xmm0
@@ -653,7 +702,7 @@ proc xcf._.composite_rgb_07 ; Addition
endp
proc xcf._.composite_rgb_08 ; Subtract
proc img._.composite_rgb_08 ; Subtract
movdqa xmm4, xmm2
psubusb xmm4, xmm3
@@ -665,7 +714,7 @@ proc xcf._.composite_rgb_08 ; Subtract
endp
proc xcf._.composite_rgb_09 ; Darken Only
proc img._.composite_rgb_09 ; Darken Only
pminub xmm3, xmm2
punpcklbw xmm2, xmm0
@@ -675,7 +724,7 @@ proc xcf._.composite_rgb_09 ; Darken Only
endp
proc xcf._.composite_rgb_10 ; Lighten Only
proc img._.composite_rgb_10 ; Lighten Only
pmaxub xmm3, xmm2
punpcklbw xmm2, xmm0
@@ -685,7 +734,7 @@ proc xcf._.composite_rgb_10 ; Lighten Only
endp
proc xcf._.composite_rgb_11 ; Hue (H of HSV)
proc img._.composite_rgb_11 ; Hue (H of HSV)
push eax ebx ecx edx
movd eax, xmm3
@@ -749,7 +798,7 @@ proc xcf._.composite_rgb_11 ; Hue (H of HSV)
endp
proc xcf._.composite_rgb_12 ; Saturation (S of HSV)
proc img._.composite_rgb_12 ; Saturation (S of HSV)
push eax ebx ecx edx
movd eax, xmm3
@@ -807,7 +856,7 @@ proc xcf._.composite_rgb_12 ; Saturation (S of HSV)
endp
proc xcf._.composite_rgb_13 ; Color (H and S of HSL)
proc img._.composite_rgb_13 ; Color (H and S of HSL)
push eax ebx ecx edx
movd eax, xmm3
@@ -854,7 +903,7 @@ proc xcf._.composite_rgb_13 ; Color (H and S of HSL)
endp
proc xcf._.composite_rgb_14 ; Value (V of HSV)
proc img._.composite_rgb_14 ; Value (V of HSV)
push eax ebx ecx edx
movd eax, xmm3
@@ -909,7 +958,7 @@ proc xcf._.composite_rgb_14 ; Value (V of HSV)
endp
proc xcf._.composite_rgb_15 ; Divide
proc img._.composite_rgb_15 ; Divide
push eax ebx ecx
movd eax, xmm3
@@ -1006,7 +1055,7 @@ proc xcf._.composite_rgb_15 ; Divide
endp
proc xcf._.composite_rgb_16 ; Dodge
proc img._.composite_rgb_16 ; Dodge
push eax ebx ecx
movd eax, xmm3
@@ -1107,7 +1156,7 @@ proc xcf._.composite_rgb_16 ; Dodge
endp
proc xcf._.composite_rgb_17 ; Burn
proc img._.composite_rgb_17 ; Burn
push eax ebx ecx
movd eax, xmm3
@@ -1212,7 +1261,7 @@ proc xcf._.composite_rgb_17 ; Burn
endp
proc xcf._.composite_rgb_18 ; Hard Light
proc img._.composite_rgb_18 ; Hard Light
push eax ebx ecx
movd eax, xmm3
@@ -1297,7 +1346,7 @@ proc xcf._.composite_rgb_18 ; Hard Light
endp
proc xcf._.composite_rgb_20 ; Grain Extract
proc img._.composite_rgb_20 ; Grain Extract
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
@@ -1311,7 +1360,7 @@ proc xcf._.composite_rgb_20 ; Grain Extract
endp
proc xcf._.composite_rgb_21 ; Grain Merge
proc img._.composite_rgb_21 ; Grain Merge
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0

View File

@@ -57,10 +57,11 @@ include 'xbm/xbm.asm'
include 'scale.asm'
include 'convert.asm'
COMPOSITE_MODE equ MMX
; MMX | pretty fast and compatible
; SSE | a bit faster, but may be unsupported by some CPUs
include 'blend.asm'
COMPOSITE_MODE equ MMX
match =MMX, COMPOSITE_MODE {include 'blend_mmx.asm'}
match =SSE, COMPOSITE_MODE {include 'blend_sse.asm'}
;;============================================================================;;
proc lib_init ;///////////////////////////////////////////////////////////////;;

View File

@@ -963,8 +963,8 @@ endl
@@:
mov edx, 12
.type_defined:
mov ecx, (xcf._.composite_table.end - xcf._.composite_table.begin) / 8
mov edi, xcf._.composite_table.begin
mov ecx, (img._.composite_table.end - img._.composite_table.begin) / 8
mov edi, img._.composite_table.begin
.still:
cmp eax, [edi]
@@ -1628,3 +1628,28 @@ xcf._.prop_table_begin:
dd 11, xcf._.parse_properties.11
dd 15, xcf._.parse_properties.15
xcf._.prop_table_end:
img._.composite_table.begin:
.p00 dd 00, img._.composite_rgb_00, img._.composite_gray_00, img._.composite_indexed_00 ; Normal
.p01 dd 01, img._.composite_rgb_01, img._.composite_gray_01, img._.composite_gray_01 ; Dissolve : random dithering to discrete alpha
; .p02 dd 02, img._.composite_rgb_02, 0, img._.composite_indexed_02 ; Behind : not selectable in the GIMP UI. not implemented
.p03 dd 03, img._.composite_rgb_03, img._.composite_rgb_03, img._.composite_indexed_00 ; Multiply
.p04 dd 04, img._.composite_rgb_04, img._.composite_rgb_04, img._.composite_indexed_00 ; Screen
.p05 dd 05, img._.composite_rgb_05, img._.composite_rgb_05, img._.composite_indexed_00 ; Overlay
.p06 dd 06, img._.composite_rgb_06, img._.composite_rgb_06, img._.composite_indexed_00 ; Difference
.p07 dd 07, img._.composite_rgb_07, img._.composite_rgb_07, img._.composite_indexed_00 ; Addition
.p08 dd 08, img._.composite_rgb_08, img._.composite_rgb_08, img._.composite_indexed_00 ; Subtract
.p09 dd 09, img._.composite_rgb_09, img._.composite_rgb_09, img._.composite_indexed_00 ; Darken Only
.p10 dd 10, img._.composite_rgb_10, img._.composite_rgb_10, img._.composite_indexed_00 ; Lighten Only
.p11 dd 11, img._.composite_rgb_11, img._.composite_gray_00, img._.composite_indexed_00 ; Hue (H of HSV)
.p12 dd 12, img._.composite_rgb_12, img._.composite_gray_00, img._.composite_indexed_00 ; Saturation (S of HSV)
.p13 dd 13, img._.composite_rgb_13, img._.composite_gray_00, img._.composite_indexed_00 ; Color (H and S of HSL)
.p14 dd 14, img._.composite_rgb_14, img._.composite_gray_00, img._.composite_indexed_00 ; Value (V of HSV)
.p15 dd 15, img._.composite_rgb_15, img._.composite_rgb_15, img._.composite_indexed_00 ; Divide
.p16 dd 16, img._.composite_rgb_16, img._.composite_rgb_16, img._.composite_indexed_00 ; Dodge
.p17 dd 17, img._.composite_rgb_17, img._.composite_rgb_17, img._.composite_indexed_00 ; Burn
.p18 dd 18, img._.composite_rgb_18, img._.composite_rgb_18, img._.composite_indexed_00 ; Hard Light
.p19 dd 19, img._.composite_rgb_05, img._.composite_rgb_05, img._.composite_indexed_00 ; Soft Light : XCF >= 2 only ('soft light' == 'overlay')
.p20 dd 20, img._.composite_rgb_20, img._.composite_rgb_20, img._.composite_indexed_00 ; Grain Extract : XCF >= 2 only
.p21 dd 21, img._.composite_rgb_21, img._.composite_rgb_21, img._.composite_indexed_00 ; Grain Merge : XCF >= 2 only
img._.composite_table.end: