oot/src/code/z_fbdemo.c

#include <ultra64.h>
#include <global.h>

Gfx D_8012AFB0[] = {
    gsDPPipeSync(),
    gsDPSetCycleType(G_CYC_FILL),
    gsDPSetColorImage(G_IM_FMT_RGBA, G_IM_SIZ_16b, 320, 0x0F000000),
    gsDPSetFillColor((GPACK_RGBA5551(65, 65, 65, 1) << 16) | GPACK_RGBA5551(65, 65, 65, 1)),
    gsDPFillRectangle(0, 0, 319, 239),
    gsDPPipeSync(),
    gsDPSetFillColor((GPACK_RGBA5551(65, 65, 255, 1) << 16) | GPACK_RGBA5551(65, 65, 255, 1)),
    gsDPFillRectangle(20, 20, 300, 220),
    gsDPPipeSync(),
    gsSPEndDisplayList(),
};

Gfx D_8012B000[] = {
    gsDPPipeSync(),
    gsSPTexture(0x8000, 0x8000, 0, G_TX_RENDERTILE, G_ON),
    gsSPClearGeometryMode(G_ZBUFFER | G_SHADE | G_CULL_BOTH | G_FOG | G_LIGHTING | G_TEXTURE_GEN |
                          G_TEXTURE_GEN_LINEAR | G_LOD | G_SHADING_SMOOTH),
    gsDPSetCombineMode(G_CC_DECALRGB, G_CC_DECALRGB),
    gsDPSetOtherMode(G_AD_DISABLE | G_CD_MAGICSQ | G_CK_NONE | G_TC_FILT | G_TF_BILERP | G_TT_NONE | G_TL_TILE |
                         G_TD_CLAMP | G_TP_PERSP | G_CYC_1CYCLE | G_PM_1PRIMITIVE,
                     G_AC_NONE | G_ZS_PIXEL | G_RM_AA_OPA_SURF | G_RM_AA_OPA_SURF2),
    gsSPEndDisplayList(),
};

#ifdef NON_EQUIVALENT
// The general control flow is correct and nothing is especially out of order but there are
// many small reoderings and regalloc all over so functional equivalence cannot be verified
void TransitionUnk_InitGraphics(TransitionUnk* this) {
    Vtx* vtx2;
    s32 frame;
    s32 rowTex;
    s32 row;
    Gfx* gfx;
    Vtx* vtx;
    s32 col;
    s32 colTex;

    guMtxIdent(&this->modelView);
    guMtxIdent(&this->unk_98);
    guOrtho(&this->projection, 0.0f, SCREEN_WIDTH, SCREEN_HEIGHT, 0.0f, -1000.0f, 1000.0f, 1.0f);

    for (frame = 0; frame < 2; frame++) {
        this->frame = frame;
        vtx = (frame == 0) ? this->vtxFrame1 : this->vtxFrame2;
        for (col = 0, colTex = 0; col < this->col + 1; col++, colTex += 0x20) {
            for (row = 0, rowTex = 0; row < this->row + 1; row++, rowTex += 0x20) {
                vtx2 = vtx;
                vtx2->v.tc[0] = rowTex * 0x40;
                vtx2->v.ob[0] = rowTex;
                vtx2->v.ob[1] = col * 0x20;
                vtx2->v.ob[2] = -5;
                vtx2->v.flag = 0;
                vtx2->v.tc[1] = colTex * 0x40;
                vtx2->v.cn[0] = 0;
                vtx2->v.cn[1] = 0;
                vtx2->v.cn[2] = 120;
                vtx2->v.cn[3] = 255;
                vtx++;
            }
        }
    }

    gfx = this->gfx;
    for (col = 0, colTex = 0; col < this->col; col++, colTex += 0x20) {
        gSPVertex(gfx++, SEGMENT_ADDR(0xA, col * (this->row + 1) * sizeof(Vtx)), this->row + 1, 0);
        for (row = 0, rowTex = 0; row < this->row; row++, rowTex += 0x20) {
            gDPPipeSync(gfx++);
            gDPSetTextureImage(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, SCREEN_WIDTH, SEGMENT_ADDR(0xB, 0));
            gDPSetTile(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, 9, 0x0000, G_TX_LOADTILE, 0, G_TX_NOMIRROR | G_TX_WRAP,
                       G_TX_NOMASK, G_TX_NOLOD, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOLOD);
            gDPLoadSync(gfx++);
            gDPLoadTile(gfx++, G_TX_LOADTILE, rowTex, colTex, rowTex + 0x20, colTex + 0x20);
            gDPPipeSync(gfx++);
            gDPSetTile(gfx++, G_IM_FMT_RGBA, G_IM_SIZ_16b, 9, 0x0000, G_TX_RENDERTILE, 0, G_TX_NOMIRROR | G_TX_WRAP,
                       G_TX_NOMASK, G_TX_NOLOD, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOLOD);
            gDPSetTileSize(gfx++, G_TX_RENDERTILE, rowTex, colTex, rowTex + 0x20, colTex + 0x20);
            gSP1Quadrangle(gfx++, row, row + 1, row + this->row, row + this->row + 1, 0);
        }
    }
    gDPPipeSync(gfx++);
    gSPEndDisplayList(gfx++);

    LOG("this->col * (1 + this->row * (1 + 7 + 1)) + 1 + 1", this->col * (1 + this->row * 9) + 2, "%d", "../z_fbdemo.c",
        144);
    LOG("gp - this->gfxtbl", gfx - this->gfx, "%d", "../z_fbdemo.c", 145);
}
#else
#pragma GLOBAL_ASM("asm/non_matchings/code/z_fbdemo/TransitionUnk_InitGraphics.s")
#endif

void TransitionUnk_InitData(TransitionUnk* this) {
    s32 col;
    s32 row;

    for (col = 0; col < this->col + 1; col++) {
        for (row = 0; row < this->row + 1; row++) {
            (this->unk_0C + row + col * (this->row + 1))->unk_0 = row * 32;
            (this->unk_0C + row + col * (this->row + 1))->unk_4 = col * 32;
        }
    }
}

void TransitionUnk_Destroy(TransitionUnk* this) {
    osSyncPrintf("fbdemo_cleanup(%08x)\n", this);
    osSyncPrintf("msleep(100);\n");
    Sleep_Msec(100);
    if (this->unk_0C != NULL) {
        SystemArena_FreeDebug(this->unk_0C, "../z_fbdemo.c", 180);
        this->unk_0C = NULL;
    }
    if (this->vtxFrame1 != NULL) {
        SystemArena_FreeDebug(this->vtxFrame1, "../z_fbdemo.c", 181);
        this->vtxFrame1 = NULL;
    }
    if (this->vtxFrame2 != NULL) {
        SystemArena_FreeDebug(this->vtxFrame2, "../z_fbdemo.c", 182);
        this->vtxFrame2 = NULL;
    }
    if (this->gfx != NULL) {
        SystemArena_FreeDebug(this->gfx, "../z_fbdemo.c", 183);
        this->gfx = NULL;
    }
}

TransitionUnk* TransitionUnk_Init(TransitionUnk* this, s32 row, s32 col) {
    osSyncPrintf("fbdemo_init(%08x, %d, %d)\n", this, row, col);
    bzero(this, sizeof(*this));
    this->frame = 0;
    this->row = row;
    this->col = col;
    this->unk_0C = SystemArena_MallocDebug((row + 1) * sizeof(TransitionUnkData) * (col + 1), "../z_fbdemo.c", 195);
    this->vtxFrame1 = SystemArena_MallocDebug((row + 1) * sizeof(Vtx) * (col + 1), "../z_fbdemo.c", 196);
    this->vtxFrame2 = SystemArena_MallocDebug((row + 1) * sizeof(Vtx) * (col + 1), "../z_fbdemo.c", 197);
    this->gfx = SystemArena_MallocDebug((this->col * (1 + this->row * 9) + 2) * sizeof(Gfx), "../z_fbdemo.c", 198);
    if (this->unk_0C == NULL || this->vtxFrame1 == NULL || this->vtxFrame2 == NULL || this->gfx == NULL) {
        osSyncPrintf("fbdemo_init allocation error\n");
        if (this->unk_0C != NULL) {
            SystemArena_FreeDebug(this->unk_0C, "../z_fbdemo.c", 202);
            this->unk_0C = NULL;
        }
        if (this->vtxFrame1 != NULL) {
            SystemArena_FreeDebug(this->vtxFrame1, "../z_fbdemo.c", 203);
            this->vtxFrame1 = NULL;
        }
        if (this->vtxFrame2 != NULL) {
            SystemArena_FreeDebug(this->vtxFrame2, "../z_fbdemo.c", 204);
            this->vtxFrame2 = NULL;
        }
        if (this->gfx != NULL) {
            SystemArena_FreeDebug(this->gfx, "../z_fbdemo.c", 205);
            this->gfx = NULL;
        }
        return NULL;
    }
    TransitionUnk_InitGraphics(this);
    TransitionUnk_InitData(this);
    this->frame = 0;
    return this;
}

void TransitionUnk_SetData(TransitionUnk* this) {
    s32 col;
    Vtx* vtx;
    s32 row;

    for (col = 0; col < this->col + 1; col++) {
        for (row = 0; row < this->row + 1; row++) {
            vtx = (this->frame == 0) ? this->vtxFrame1 : this->vtxFrame2;
            (vtx + row + col * (this->row + 1))->v.ob[0] = (this->unk_0C + row + col * (this->row + 1))->unk_0;
            vtx = (this->frame == 0) ? this->vtxFrame1 : this->vtxFrame2;
            (vtx + row + col * (this->row + 1))->v.ob[1] = (this->unk_0C + row + col * (this->row + 1))->unk_4;
        }
    }
}

void TransitionUnk_Draw(TransitionUnk* this, Gfx** gfxP) {
    Gfx* gfx = *gfxP;

    gSPDisplayList(gfx++, D_8012B000);
    TransitionUnk_SetData(this);
    gSPMatrix(gfx++, &this->projection, G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_PROJECTION);
    gSPMatrix(gfx++, &this->modelView, G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
    gSPSegment(gfx++, 0xA, this->frame == 0 ? this->vtxFrame1 : this->vtxFrame2);
    gSPSegment(gfx++, 0xB, this->zBuffer);
    gSPDisplayList(gfx++, D_8012B000);
    gSPDisplayList(gfx++, this->gfx);
    gDPPipeSync(gfx++);
    this->frame ^= 1;
    *gfxP = gfx;
}

void TransitionUnk_Update(TransitionUnk* this) {
    f32 temp_f00;
    f32 temp_f12;
    s32 col;
    f32 phi_f14;
    s32 row;

    for (col = 0; col < this->col + 1; col++) {
        for (row = 0; row < this->row + 1; row++) {
            temp_f00 =
                (this->unk_0C + row + col * (this->row + 1))->unk_0 - (this->unk_0C + 5 + 4 * (this->row + 1))->unk_0;
            temp_f12 =
                (this->unk_0C + row + col * (this->row + 1))->unk_4 - (this->unk_0C + 5 + 4 * (this->row + 1))->unk_4;
            phi_f14 = (SQ(temp_f00) + SQ(temp_f12)) / 100.0f;
            if (phi_f14 != 0.0f) {
                if (phi_f14 < 1.0f) {
                    phi_f14 = 1.0f;
                }
                (this->unk_0C + row + col * (this->row + 1))->unk_0 -= temp_f00 / phi_f14;
                (this->unk_0C + row + col * (this->row + 1))->unk_4 -= temp_f12 / phi_f14;
            }
        }
    }
}

void func_800B23E8(TransitionUnk* this) {
}

s32 func_800B23F0(TransitionUnk* this) {
    return 0;
}