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#include "global.h"
#include "gx.h"
ARM_FUNC void G2x_SetBGyAffine_(u32 ptr, const struct Mtx22 *mtx, fx32 a, fx32 b, fx32 c, fx32 d){
fx32 temp0, temp1, temp2, temp3;
*((vu32 *)ptr + 0) = (u32)((u16)(fx16)(mtx->_[0] >> 4) | (u16)(fx16)(mtx->_[1] >> 4)<< 0x10);
*((vu32 *)ptr + 1) = (u32)((u16)(fx16)(mtx->_[2] >> 4) | (u16)(fx16)(mtx->_[3] >> 4)<< 0x10);
temp0 = c - a;
temp1 = d - b;
temp2 = mtx->_[0] * temp0 + mtx->_[1] * temp1 + (a << 0xC);
temp3 = mtx->_[2] * temp0 + mtx->_[3] * temp1 + (b << 0xC);
*((vu32 *)ptr + 2) = (u32)(temp2 >> 4);
*((vu32 *)ptr + 3) = (u32)(temp3 >> 4);
}
ARM_FUNC void G2x_SetBlendAlpha_(u32 *ptr, fx32 a, fx32 b, fx32 c, fx32 d){
*ptr = (u32)(((a | 0x40) | (b << 0x8)) | ((c | (d << 0x8)) << 0x10));
}
ARM_FUNC void G2x_SetBlendBrightness_(u16 *ptr, fx32 a, fx32 brightness){
if (brightness < 0)
{
ptr[0] = (u16)(a | 0xC0);
ptr[2] = (u16)(-brightness);
}
else
{
ptr[0] = (u16)(a | 0x80);
ptr[2] = (u16)brightness;
}
}
ARM_FUNC void G2x_SetBlendBrightnessExt_(u16 *ptr, fx32 a, fx32 b, fx32 c, fx32 d, fx32 brightness){
ptr[1] = (u16)(c | (d << 0x8));
if (brightness < 0)
{
ptr[0] = (u16)(0xC0 | a | (b << 0x8));
ptr[2] = (u16)(-brightness);
}
else
{
ptr[0] = (u16)(0x80 | a | (b << 0x8));
ptr[2] = (u16)brightness;
}
}
ARM_FUNC void G2x_ChangeBlendBrightness_(u16 *ptr, fx32 brightness){
u32 temp = *ptr;
if (brightness < 0)
{
if ((temp & 0xC0) == 0x80)
{
ptr[0] = (u16)((temp & ~0xC0) | 0xC0);
}
ptr[2] = (u16)(-brightness);
}
else
{
if ((temp & 0xC0) == 0xC0)
{
ptr[0] = (u16)((temp & ~0xC0) | 0x80);
}
ptr[2] = (u16)brightness;
}
}
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