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#include "dolphin/gx/GXTransform.h"
#include "dolphin/gx/GX.h"
#include "dolphin/gx/GXInit.h"
static void Copy6Floats(register f32 src[6], register f32 dst[6]) {
register f32 ps_0, ps_1, ps_2;
// clang-format off
#ifdef __MWERKS__
asm {
psq_l ps_0, 0(src), 0, 0
psq_l ps_1, 8(src), 0, 0
psq_l ps_2, 16(src), 0, 0
psq_st ps_0, 0(dst), 0, 0
psq_st ps_1, 8(dst), 0, 0
psq_st ps_2, 16(dst), 0, 0
}
#endif
// clang-format on
}
static void WriteProjPS(const register f32 src[6], register volatile void* dst) {
register f32 ps_0, ps_1, ps_2;
// clang-format off
#ifdef __MWERKS__
asm {
psq_l ps_0, 0(src), 0, 0
psq_l ps_1, 8(src), 0, 0
psq_l ps_2, 16(src), 0, 0
psq_st ps_0, 0(dst), 0, 0
psq_st ps_1, 0(dst), 0, 0
psq_st ps_2, 0(dst), 0, 0
}
#endif
// clang-format on
}
void GXProject(f32 model_x, f32 model_y, f32 model_z, Mtx model_mtx, f32* proj_mtx, f32* viewpoint,
f32* screen_x, f32* screen_y, f32* screen_z) {
f32 sp10[3];
f32 var_f30;
f32 var_f29;
f32 var_f28;
f32 var_f31;
sp10[0] = (model_mtx[0][0] * model_x) + (model_mtx[0][1] * model_y) +
(model_mtx[0][2] * model_z) + model_mtx[0][3];
sp10[1] = (model_mtx[1][0] * model_x) + (model_mtx[1][1] * model_y) +
(model_mtx[1][2] * model_z) + model_mtx[1][3];
sp10[2] = (model_mtx[2][0] * model_x) + (model_mtx[2][1] * model_y) +
(model_mtx[2][2] * model_z) + model_mtx[2][3];
if (proj_mtx[0] == 0.0f) {
var_f30 = (sp10[0] * proj_mtx[1]) + (sp10[2] * proj_mtx[2]);
var_f29 = (sp10[1] * proj_mtx[3]) + (sp10[2] * proj_mtx[4]);
var_f28 = proj_mtx[6] + (sp10[2] * proj_mtx[5]);
var_f31 = 1.0f / -sp10[2];
} else {
var_f30 = proj_mtx[2] + (sp10[0] * proj_mtx[1]);
var_f29 = proj_mtx[4] + (sp10[1] * proj_mtx[3]);
var_f28 = proj_mtx[6] + (sp10[2] * proj_mtx[5]);
var_f31 = 1.0f;
}
*screen_x = (viewpoint[2] / 2) + (viewpoint[0] + (var_f31 * (var_f30 * viewpoint[2] / 2)));
*screen_y = (viewpoint[3] / 2) + (viewpoint[1] + (var_f31 * (-var_f29 * viewpoint[3] / 2)));
*screen_z = viewpoint[5] + (var_f31 * (var_f28 * (viewpoint[5] - viewpoint[4])));
}
void GXSetProjection(const Mtx44 proj, GXProjectionType type) {
volatile void* fifo;
u32 reg;
gx->projType = type;
gx->projMtx[0] = proj[0][0];
gx->projMtx[2] = proj[1][1];
gx->projMtx[4] = proj[2][2];
gx->projMtx[5] = proj[2][3];
if (type == GX_ORTHOGRAPHIC) {
gx->projMtx[1] = proj[0][3];
gx->projMtx[3] = proj[1][3];
} else {
gx->projMtx[1] = proj[0][2];
gx->projMtx[3] = proj[1][2];
}
reg = 0x00061020;
GX_WRITE_U8(0x10);
GX_WRITE_U32(reg);
GX_WRITE_XF_REG_F(32, gx->projMtx[0]);
GX_WRITE_XF_REG_F(33, gx->projMtx[1]);
GX_WRITE_XF_REG_F(34, gx->projMtx[2]);
GX_WRITE_XF_REG_F(35, gx->projMtx[3]);
GX_WRITE_XF_REG_F(36, gx->projMtx[4]);
GX_WRITE_XF_REG_F(37, gx->projMtx[5]);
GX_WRITE_XF_REG_2(38, gx->projType);
gx->bpSentNot = GX_TRUE;
}
void GXSetProjectionv(f32* proj) {
gx->projType = proj[0];
gx->projMtx[0] = proj[1];
gx->projMtx[1] = proj[2];
gx->projMtx[2] = proj[3];
gx->projMtx[3] = proj[4];
gx->projMtx[4] = proj[5];
gx->projMtx[5] = proj[6];
GX_WRITE_U8(0x10);
GX_WRITE_U32(0x00061020);
GX_WRITE_XF_REG_F(32, gx->projMtx[0]);
GX_WRITE_XF_REG_F(33, gx->projMtx[1]);
GX_WRITE_XF_REG_F(34, gx->projMtx[2]);
GX_WRITE_XF_REG_F(35, gx->projMtx[3]);
GX_WRITE_XF_REG_F(36, gx->projMtx[4]);
GX_WRITE_XF_REG_F(37, gx->projMtx[5]);
GX_WRITE_XF_REG_2(38, gx->projType);
gx->bpSentNot = GX_TRUE;
}
void GXGetProjectionv(f32* proj) {
proj[0] = gx->projType;
proj[1] = gx->projMtx[0];
proj[2] = gx->projMtx[1];
proj[3] = gx->projMtx[2];
proj[4] = gx->projMtx[3];
proj[5] = gx->projMtx[4];
proj[6] = gx->projMtx[5];
}
static void WriteMTXPS4x3(register volatile void* dst, register const Mtx src) {
register f32 ps_0, ps_1, ps_2, ps_3, ps_4, ps_5;
// clang-format off
#ifdef __MWERKS__
asm {
psq_l ps_0, 0(src), 0, 0
psq_l ps_1, 8(src), 0, 0
psq_l ps_2, 16(src), 0, 0
psq_l ps_3, 24(src), 0, 0
psq_l ps_4, 32(src), 0, 0
psq_l ps_5, 40(src), 0, 0
psq_st ps_0, 0(dst), 0, 0
psq_st ps_1, 0(dst), 0, 0
psq_st ps_2, 0(dst), 0, 0
psq_st ps_3, 0(dst), 0, 0
psq_st ps_4, 0(dst), 0, 0
psq_st ps_5, 0(dst), 0, 0
}
#endif
// clang-format on
}
void GXLoadPosMtxImm(Mtx mtx, u32 id) {
GX_XF_LOAD_REGS(4 * 3 - 1, id * 4 + GX_XF_MEM_POSMTX);
WriteMTXPS4x3(&GXFIFO, mtx);
}
static void WriteMTXPS3x3(register volatile void* dst, register const Mtx src) {
register f32 ps_0, ps_1, ps_2, ps_3, ps_4, ps_5;
// clang-format off
#ifdef __MWERKS__
asm {
psq_l ps_0, 0(src), 0, 0
lfs ps_1, 8(src)
psq_l ps_2, 16(src), 0, 0
lfs ps_3, 24(src)
psq_l ps_4, 32(src), 0, 0
lfs ps_5, 40(src)
psq_st ps_0, 0(dst), 0, 0
stfs ps_1, 0(dst)
psq_st ps_2, 0(dst), 0, 0
stfs ps_3, 0(dst)
psq_st ps_4, 0(dst), 0, 0
stfs ps_5, 0(dst)
}
#endif
// clang-format on
}
void GXLoadNrmMtxImm(Mtx mtx, u32 id) {
GX_XF_LOAD_REGS(3 * 3 - 1, id * 3 + GX_XF_MEM_NRMMTX);
WriteMTXPS3x3(&GXFIFO, mtx);
}
void GXSetCurrentMtx(u32 id) {
GX_SET_REG(gx->matIdxA, id, GX_XF_MTXIDX0_GEOM_ST, GX_XF_MTXIDX0_GEOM_END);
__GXSetMatrixIndex(GX_VA_PNMTXIDX);
}
static void WriteMTXPS4x2(register volatile void* dst, register const Mtx src) {
register f32 ps_0, ps_1, ps_2, ps_3;
// clang-format off
#ifdef __MWERKS__
asm {
psq_l ps_0, 0(src), 0, 0
psq_l ps_1, 8(src), 0, 0
psq_l ps_2, 16(src), 0, 0
psq_l ps_3, 24(src), 0, 0
psq_st ps_0, 0(dst), 0, 0
psq_st ps_1, 0(dst), 0, 0
psq_st ps_2, 0(dst), 0, 0
psq_st ps_3, 0(dst), 0, 0
}
#endif
// clang-format on
}
void GXLoadTexMtxImm(const Mtx mtx, u32 id, GXTexMtxType type) {
u32 addr;
u32 num;
u32 reg;
// Matrix address in XF memory
addr = id >= GX_PTTEXMTX0 ? (id - GX_PTTEXMTX0) * 4 + GX_XF_MEM_DUALTEXMTX :
id * 4 + (u64)GX_XF_MEM_POSMTX;
// Number of elements in matrix
num = type == GX_MTX2x4 ? (u64)(2 * 4) : 3 * 4;
reg = addr | (num - 1) << 16;
GX_XF_LOAD_REG_HDR(reg);
if (type == GX_MTX3x4) {
WriteMTXPS4x3(&GXFIFO, mtx);
} else {
WriteMTXPS4x2(&GXFIFO, mtx);
}
}
void __GXSetViewport(void) {
f32 a, b, c, d, e, f;
f32 near, far;
a = gx->vpWd / 2;
b = -gx->vpHt / 2;
d = gx->vpLeft + (gx->vpWd / 2) + 342.0f;
e = gx->vpTop + (gx->vpHt / 2) + 342.0f;
near = gx->vpNearz * gx->zScale;
far = gx->vpFarz * gx->zScale;
c = far - near;
f = far + gx->zOffset;
GX_XF_LOAD_REGS(5, GX_XF_REG_SCALEX);
GXFIFO.f32 = a;
GXFIFO.f32 = b;
GXFIFO.f32 = c;
GXFIFO.f32 = d;
GXFIFO.f32 = e;
GXFIFO.f32 = f;
}
void GXSetViewport(f32 left, f32 top, f32 width, f32 height, f32 nearZ, f32 farZ) {
gx->vpLeft = left;
gx->vpTop = top;
gx->vpWd = width;
gx->vpHt = height;
gx->vpNearz = nearZ;
gx->vpFarz = farZ;
__GXSetViewport();
gx->bpSentNot = GX_TRUE;
}
void GXGetViewportv(f32* p) {
Copy6Floats(&gx->vpLeft, p);
}
void GXSetScissor(u32 left, u32 top, u32 width, u32 height) {
u32 y1, x1, y2, x2;
u32 reg;
y1 = top + 342;
x1 = left + 342;
GX_SET_REG(gx->suScis0, y1, GX_BP_SCISSORTL_TOP_ST, GX_BP_SCISSORTL_TOP_END);
GX_SET_REG(gx->suScis0, x1, GX_BP_SCISSORTL_LEFT_ST, GX_BP_SCISSORTL_LEFT_END);
y2 = y1 + height - 1;
x2 = (x1 + width) - 1;
GX_SET_REG(gx->suScis1, y2, GX_BP_SCISSORBR_BOT_ST, GX_BP_SCISSORBR_BOT_END);
GX_SET_REG(gx->suScis1, x2, GX_BP_SCISSORBR_RIGHT_ST, GX_BP_SCISSORBR_RIGHT_END);
GX_BP_LOAD_REG(gx->suScis0);
GX_BP_LOAD_REG(gx->suScis1);
gx->bpSentNot = FALSE;
}
void GXGetScissor(u32* left, u32* top, u32* width, u32* height) {
u32 y1 = (gx->suScis0 & 0x0007FF) >> 0;
u32 x1 = (gx->suScis0 & 0x7FF000) >> 12;
u32 y2 = (gx->suScis1 & 0x0007FF) >> 0;
u32 x2 = (gx->suScis1 & 0x7FF000) >> 12;
*left = x1 - 0x156;
*top = y1 - 0x156;
*width = (x2 - x1) + 1;
*height = (y2 - y1) + 1;
}
void GXSetScissorBoxOffset(s32 x, s32 y) {
u32 cmd = 0;
u32 x1;
u32 y1;
x1 = (u32)(x + 342) / 2;
y1 = (u32)(y + 342) / 2;
GX_SET_REG(cmd, x1, GX_BP_SCISSOROFS_OX_ST, GX_BP_SCISSOROFS_OX_END);
GX_SET_REG(cmd, y1, GX_BP_SCISSOROFS_OY_ST, GX_BP_SCISSOROFS_OY_END);
GX_SET_REG(cmd, GX_BP_REG_SCISSOROFFSET, 0, 7);
GX_BP_LOAD_REG(cmd);
gx->bpSentNot = GX_FALSE;
}
void GXSetClipMode(GXClipMode mode) {
GX_XF_LOAD_REG(GX_XF_REG_CLIPDISABLE, mode);
gx->bpSentNot = GX_TRUE;
}
void __GXSetMatrixIndex(GXAttr index) {
// Tex4 and after is stored in XF MatrixIndex1
if (index < GX_VA_TEX4MTXIDX) {
GX_CP_LOAD_REG(GX_CP_REG_MTXIDXA, gx->matIdxA);
GX_XF_LOAD_REG(GX_XF_REG_MATRIXINDEX0, gx->matIdxA);
} else {
GX_CP_LOAD_REG(GX_CP_REG_MTXIDXB, gx->matIdxB);
GX_XF_LOAD_REG(GX_XF_REG_MATRIXINDEX1, gx->matIdxB);
}
gx->bpSentNot = GX_TRUE;
}
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