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Re-factor of gfx_transpose_palette

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Requires testing i feel as though osinterface call might be incorrect.
This commit is contained in:
Duncan
2014-06-18 13:03:37 +01:00
parent 4b02a71692
commit 31bf6bf4b3
1 changed files with 12 additions and 16 deletions
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28
src/gfx.c
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@@ -1121,25 +1121,21 @@ void gfx_draw_sprite_palette_set(rct_drawpixelinfo *dpi, int image_id, int x, in
*/
void gfx_transpose_palette(int pal, unsigned char product)
{
int eax, ebx, ebp;
uint8* esi, *edi;
rct_g1_element g1 = RCT2_ADDRESS(RCT2_ADDRESS_G1_ELEMENTS, rct_g1_element)[pal];
int width = g1.width;
int x = g1.x_offset;
uint8* dest_pointer = RCT2_ADDRESS(0x014124680,uint8)[x];
uint8* source_pointer = g1.offset;
ebx = pal * 16;
esi = (uint8*)(*((int*)(RCT2_ADDRESS_G1_ELEMENTS + ebx)));
ebp = *((short*)(0x009EBD2C + ebx));
eax = *((short*)(0x009EBD30 + ebx)) * 4;
edi = (uint8*)0x01424680 + eax;
for (; ebp > 0; ebp--) {
edi[0] = (esi[0] * product) >> 8;
edi[1] = (esi[1] * product) >> 8;
edi[2] = (esi[2] * product) >> 8;
esi += 3;
edi += 4;
for (; width > 0; width--) {
dest_pointer[0] = (source_pointer[0] * product) >> 8;
dest_pointer[1] = (source_pointer[1] * product) >> 8;
dest_pointer[2] = (source_pointer[2] * product) >> 8;
source_pointer += 3;
dest_pointer += 4;
}
osinterface_update_palette((char*)0x01424680, 10, 236);
osinterface_update_palette((char*)0x01424680, 10, 236);//Odd would have expected dest_pointer
}
/**
* Draws i formatted text string centred at i specified position.
* rct2: 0x006C1D6C