157 lines
2.6 KiB
ArmAsm
157 lines
2.6 KiB
ArmAsm
#include <gint/config.h>
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#if GINT_RENDER_MONO
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.global _bopti_gasm_mono_scsp
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.global _bopti_gasm_mono_alpha_scsp
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.global _bopti_gasm_gray_scsp
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.global _bopti_gasm_gray_alpha_scsp
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/* REGISTER ALLOCATION:
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r0: OR layer
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r1: (temp)
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r2: light vram longword
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r3: dark vram longword
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--
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r4: light pointer
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r5: layer pointer
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r6: mask
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r7: dark pointer
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--
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@r15: -(x&31) */
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_bopti_gasm_mono_scsp:
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/* Read layer longword and shift it */
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mov.l @r5, r0
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mov.l @r15, r1
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shld r1, r0
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/* Clear target VRAM and unwanted image data */
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and r6, r0
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mov.l @r4, r2
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not r6, r6
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mov.l @r7, r3
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and r6, r2
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and r6, r3
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/* Blit and return */
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or r0, r2
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or r0, r3
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mov.l r2, @r4
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rts
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mov.l r3, @r7
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/* REGISTER ALLOCATION:
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r0: AND layer
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r1: (temp)
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r2: light vram longword
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r3: dark vram longword
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--
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r4: light pointer
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r5: layer pointer, then OR layer
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r6: mask
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r7: dark pointer
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--
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@r15: -(x&31) */
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_bopti_gasm_mono_alpha_scsp:
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/* Read layer longwords and shift them */
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mov.l @r5, r0
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mov.l @r15, r1
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mov.l @(4,r5), r5
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shld r1, r0
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shld r1, r5
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/* Clear any unwanted image data */
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and r6, r0
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mov.l @r4, r2
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and r6, r5
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mov.l @r7, r3
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/* Blit and return */
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not r0, r0
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and r0, r2
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and r0, r3
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or r5, r2
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or r5, r3
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mov.l r2, @r4
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rts
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mov.l r3, @r7
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/* REGISTER ALLOCATION:
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r0: LIGHT layer
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r1: (temp)
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r2: light vram longword
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r3: dark vram longword
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--
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r4: light pointer
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r5: layer pointer, then DARK layer
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r6: mask
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r7: dark pointer
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--
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@r15: -(x&31) */
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_bopti_gasm_gray_scsp:
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/* Read layer longwords and shift them */
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mov.l @r5, r0
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mov.l @r15, r1
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mov.l @(4,r5), r5
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shld r1, r0
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shld r1, r5
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/* Clear target VRAM and unapplied image data */
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and r6, r0
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mov.l @r4, r2
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and r6, r5
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mov.l @r7, r3
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not r6, r6
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and r6, r2
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and r6, r3
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/* Blit and return */
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or r0, r2
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or r5, r3
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mov.l r2, @r4
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rts
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mov.l r3, @r7
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/* REGISTER ALLOCATION:
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r0: AND layer
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r1: LIGHT layer
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r2: (temp), then light vram longword
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r3: dark vram longword
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--
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r4: light pointer
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r5: layer pointer, then DARK layer
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r6: mask
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r7: dark pointer
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--
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@r15: -(x&31) */
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_bopti_gasm_gray_alpha_scsp:
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/* Read layer longwords and shift them */
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mov.l @r5, r0
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mov.l @(4,r5), r1
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mov.l @(8,r5), r5
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mov.l @r15, r2
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shld r2, r0
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shld r2, r1
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shld r2, r5
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/* Clear unappliqed image data */
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and r6, r0
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and r6, r1
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and r6, r5
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/* Blit the AND layer */
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mov.l @r4, r2
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not r0, r0
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mov.l @r7, r3
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and r0, r2
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and r0, r3
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/* Blit the LIGHT and DARY layers, and return */
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or r1, r2
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or r5, r3
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mov.l r2, @r4
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rts
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mov.l r3, @r7
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#endif /* GINT_RENDER_MONO */
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