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;
; W A R N I N G
; -------------
;
; This file is not part of the Qt API. It exists purely as an
; implementation detail. This header file may change from version to
; version without notice, or even be removed.
;
; We mean it.
;
ARM
PRESERVE8
INCLUDE qdrawhelper_armv6_rvct.inc
;-----------------------------------------------------------------------------
; qt_blend_rgb32_on_rgb32_arm
;
; @brief
;
; @param dest Destination pixels (r0)
; @param dbpl Destination bytes per line (r1)
; @param src Source pixels (r2)
; @param sbpl Source bytes per line (r3)
; @param w Width (s0 -> r4)
; @param h Height (s1 -> r5)
; @param const_alpha Constant alpha (s2 -> r6)
;
;---------------------------------------------------------------------------
qt_blend_rgb32_on_rgb32_armv6 Function
stmfd sp!, {r4-r12, r14}
; read arguments off the stack
add r8, sp, #10 * 4
ldmia r8, {r9-r11}
; Reorganize registers
mov r4, r10
mov r5, r1
mov r6, r3
mov r1, r2
mov r2, r9
mov r3, r11
; Now we have registers
; @param dest Destination pixels (r0)
; @param src Source pixels (r1)
; @param w Width (r2)
; @param const_alpha Constant alpha (r3)
; @param h Height (r4)
; @param dbpl Destination bytes per line (r5)
; @param sbpl Source bytes per line (r6)
cmp r3, #256 ; test if we have fully opaque constant alpha value
bne rgb32_blend_const_alpha ; branch if not
rgb32_blend_loop
subs r4, r4, #1
bmi rgb32_blend_exit ; while(h--)
rgb321 PixCpySafe r0, r1, r2
add r0, r0, r5 ; dest = dest + dbpl
add r1, r1, r6 ; src = src + sbpl
b rgb32_blend_loop
rgb32_blend_const_alpha
;ldr r14, =ComponentHalf ; load 0x800080 to r14
mov r14, #0x800000
add r14, r14, #0x80
sub r3, r3, #1 ; const_alpha -= 1;
rgb32_blend_loop_const_alpha
subs r4, r4, #1
bmi rgb32_blend_exit ; while(h--)
rgb322 BlendRowSafe PixelSourceOverConstAlpha
add r0, r0, r5 ; dest = dest + dbpl
add r1, r1, r6 ; src = src + sbpl
b rgb32_blend_loop_const_alpha
rgb32_blend_exit
ldmfd sp!, {r4-r12, pc} ; pop and return
;-----------------------------------------------------------------------------
; qt_blend_argb32_on_argb32_arm
;
; @brief
;
; @param dest Destination pixels (r0)
; @param dbpl Destination bytes per line (r1)
; @param src Source pixels (r2)
; @param sbpl Source bytes per line (r3)
; @param w Width (s0 -> r4)
; @param h Height (s1 -> r5)
; @param const_alpha Constant alpha (s2 -> r6)
;
;---------------------------------------------------------------------------
qt_blend_argb32_on_argb32_armv6 Function
stmfd sp!, {r4-r12, r14}
; read arguments off the stack
add r8, sp, #10 * 4
ldmia r8, {r9-r11}
; Reorganize registers
mov r4, r10
mov r5, r1
mov r6, r3
mov r1, r2
mov r2, r9
mov r3, r11
; Now we have registers
; @param dest Destination pixels (r0)
; @param src Source pixels (r1)
; @param w Width (r2)
; @param const_alpha Constant alpha (r3)
; @param h Height (r4)
; @param dbpl Destination bytes per line (r5)
; @param sbpl Source bytes per line (r6)
;ldr r14, =ComponentHalf ; load 0x800080 to r14
mov r14, #0x800000
add r14, r14, #0x80
cmp r3, #256 ; test if we have fully opaque constant alpha value
bne argb32_blend_const_alpha ; branch if not
argb32_blend_loop
subs r4, r4, #1
bmi argb32_blend_exit ; while(h--)
argb321 BlendRowSafe PixelSourceOver
add r0, r0, r5 ; dest = dest + dbpl
add r1, r1, r6 ; src = src + sbpl
b argb32_blend_loop
argb32_blend_const_alpha
sub r3, r3, #1 ; const_alpha -= 1;
argb32_blend_loop_const_alpha
subs r4, r4, #1
bmi argb32_blend_exit ; while(h--)
argb322 BlendRowSafe PixelSourceOverConstAlpha
add r0, r0, r5 ; dest = dest + dbpl
add r1, r1, r6 ; src = src + sbpl
b argb32_blend_loop_const_alpha
argb32_blend_exit
ldmfd sp!, {r4-r12, pc} ; pop and return
END ; File end