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#include "global.h"
#include "gx.h"
ARM_FUNC void G3i_PerspectiveW_(fx32 fovsin, fx32 fovcos, fx32 ratio, fx32 near, fx32 far, fx32 scale, u32 load, struct Mtx44 *mtx){
fx32 fovcot, temp1, temp2;
fx64c temp0;
vu32 *reg_ptr;
fovcot = FX_Div(fovcos, fovsin);
if (scale != 0x1000) //!= 1.0
fovcot = (fovcot * scale) / 0x1000;
reg_CP_DIV_NUMER = (u64)((s64)fovcot << 0x20);
reg_CP_DIV_DENOM = (u32)ratio;
if (load)
{
reg_G3_MTX_MODE = 0x0;
reg_ptr = (vu32 *)®_G3_MTX_LOAD_4x4;
}
if (mtx)
{
mtx->_[1] = 0x0;
mtx->_[2] = 0x0;
mtx->_[3] = 0x0;
mtx->_[4] = 0x0;
mtx->_[6] = 0x0;
mtx->_[7] = 0x0;
mtx->_[8] = 0x0;
mtx->_[9] = 0x0;
mtx->_[11] = -scale;
mtx->_[12] = 0x0;
mtx->_[13] = 0x0;
mtx->_[15] = 0x0;
}
temp1 = FX_GetDivResult();
reg_CP_DIV_NUMER = (s64)0x1000 << 0x20;
reg_CP_DIV_DENOM = (u32)(near - far);
if (load)
{
*reg_ptr = (vu32)temp1;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = (vu32)fovcot;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
}
if (mtx)
{
mtx->_[0] = temp1;
mtx->_[5] = fovcot;
}
temp0 = FX_GetDivResultFx64c();
if (scale != 0x1000)
temp0 = (temp0 * scale) / 0x1000;
temp1 = (fx32)(((far + near) * temp0 + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT);
temp2 = (fx32)((((fx32)(((fx64)(near << 1) * far + (1 << (FX32_INT_SHIFT - 1))) >> FX32_INT_SHIFT)) * temp0 + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT);
if (load)
{
*reg_ptr = (vu32)temp1;
*reg_ptr = (vu32)(-scale);
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = (vu32)temp2;
*reg_ptr = 0x0;
}
if (mtx)
{
mtx->_[10] = temp1;
mtx->_[14] = temp2;
}
}
ARM_FUNC void G3i_OrthoW_(fx32 top, fx32 bottom, fx32 left, fx32 right, fx32 near, fx32 far, fx32 scale, u32 load, struct Mtx44 *mtx){
fx64c temp1, temp2, temp3;
fx32 temp0, temp4, temp5;
vu32 *reg_ptr;
FX_InvAsync(right - left);
if (load)
{
reg_G3_MTX_MODE = 0x0;
reg_ptr = (vu32 *)®_G3_MTX_LOAD_4x4;
}
if (mtx)
{
mtx->_[1] = 0x0;
mtx->_[2] = 0x0;
mtx->_[3] = 0x0;
mtx->_[4] = 0x0;
mtx->_[6] = 0x0;
mtx->_[7] = 0x0;
mtx->_[8] = 0x0;
mtx->_[9] = 0x0;
mtx->_[11] = 0x0;
mtx->_[15] = scale;
}
temp1 = FX_GetDivResultFx64c();
reg_CP_DIV_NUMER = (s64)0x1000 << 0x20;
reg_CP_DIV_DENOM = (u32)(top - bottom);
if (scale != 0x1000)
temp1 = (temp1 * scale) / 0x1000;
temp0 = (fx32)((0x2000 * temp1 + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT);
if (load)
{
*reg_ptr = (vu32)temp0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
}
if (mtx)
{
mtx->_[0] = temp0;
}
temp2 = FX_GetDivResultFx64c();
reg_CP_DIV_NUMER = (s64)0x1000 << 0x20;
reg_CP_DIV_DENOM = (u32)(near - far);
if (scale != 0x1000)
temp2 = (temp2 * scale) / 0x1000;
temp0 = (fx32)((0x2000 * temp2 + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT);
if (load)
{
*reg_ptr = (vu32)temp0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
}
if (mtx)
{
mtx->_[5] = temp0;
}
temp3 = FX_GetDivResultFx64c();
if (scale != 0x1000)
temp3 = (temp3 * scale) / 0x1000;
temp0 = (fx32)((0x2000 * temp3 + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT);
if (load)
{
*reg_ptr = (vu32)temp0;
*reg_ptr = 0x0;
}
if (mtx)
{
mtx->_[10] = temp0;
}
temp0 = (fx32)(((-(right + left)) * temp1 + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT);
temp4 = (fx32)(((-(top + bottom)) * temp2 + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT);
temp5 = (fx32)(((far + near) * temp3 + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT);
if (load)
{
*reg_ptr = (vu32)temp0;
*reg_ptr = (vu32)temp4;
*reg_ptr = (vu32)temp5;
*reg_ptr = (vu32)scale;
}
if (mtx)
{
mtx->_[12] = temp0;
mtx->_[13] = temp4;
mtx->_[14] = temp5;
}
}
ARM_FUNC void G3i_LookAt_(const struct Vecx32 *a, const struct Vecx32 *b, const struct Vecx32 *c, BOOL load, struct Mtx43 *mtx){
struct Vecx32 temp, temp1, temp2;
fx32 c1, c2, c3;
vu32 *reg_ptr;
temp.x = a->x - c->x;
temp.y = a->y - c->y;
temp.z = a->z - c->z;
VEC_Normalize(&temp, &temp);
VEC_CrossProduct(b, &temp, &temp1);
VEC_Normalize(&temp1, &temp1);
VEC_CrossProduct(&temp, &temp1, &temp2);
if (load)
{
reg_G3_MTX_MODE = 0x2;
reg_ptr = (vu32 *)®_G3_MTX_LOAD_4x3;
*reg_ptr = (vu32)temp1.x;
*reg_ptr = (vu32)temp2.x;
*reg_ptr = (vu32)temp.x;
*reg_ptr = (vu32)temp1.y;
*reg_ptr = (vu32)temp2.y;
*reg_ptr = (vu32)temp.y;
*reg_ptr = (vu32)temp1.z;
*reg_ptr = (vu32)temp2.z;
*reg_ptr = (vu32)temp.z;
}
c1 = -VEC_DotProduct(a, &temp1);
c2 = -VEC_DotProduct(a, &temp2);
c3 = -VEC_DotProduct(a, &temp);
if (load)
{
*reg_ptr = (vu32)c1;
*reg_ptr = (vu32)c2;
*reg_ptr = (vu32)c3;
}
if (mtx)
{
mtx->_[0] = temp1.x;
mtx->_[1] = temp2.x;
mtx->_[2] = temp.x;
mtx->_[3] = temp1.y;
mtx->_[4] = temp2.y;
mtx->_[5] = temp.y;
mtx->_[6] = temp1.z;
mtx->_[7] = temp2.z;
mtx->_[8] = temp.z;
mtx->_[9] = c1;
mtx->_[10] = c2;
mtx->_[11] = c3;
}
}
ARM_FUNC void G3_RotX(fx32 sinphi, fx32 cosphi){
vu32 *reg_ptr;
reg_ptr = (vu32 *)®_G3_MTX_MULT_3x3;
*reg_ptr = 0x1000;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = (vu32)cosphi;
*reg_ptr = (vu32)sinphi;
*reg_ptr = 0x0;
*reg_ptr = (vu32)(-sinphi);
*reg_ptr = (vu32)cosphi;
}
ARM_FUNC void G3_RotY(fx32 sinphi, fx32 cosphi){
vu32 *reg_ptr;
reg_ptr = (vu32 *)®_G3_MTX_MULT_3x3;
*reg_ptr = (vu32)cosphi;
*reg_ptr = 0x0;
*reg_ptr = (vu32)(-sinphi);
*reg_ptr = 0x0;
*reg_ptr = 0x1000;
*reg_ptr = 0x0;
*reg_ptr = (vu32)sinphi;
*reg_ptr = 0x0;
*reg_ptr = (vu32)cosphi;
}
ARM_FUNC void G3_RotZ(fx32 sinphi, fx32 cosphi){
vu32 *reg_ptr;
reg_ptr = (vu32 *)®_G3_MTX_MULT_3x3;
*reg_ptr = (vu32)cosphi;
*reg_ptr = (vu32)sinphi;
*reg_ptr = 0x0;
*reg_ptr = (vu32)(-sinphi);
*reg_ptr = (vu32)cosphi;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x0;
*reg_ptr = 0x1000;
}
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