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doc room_draw2

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Dragorn421 2022-06-16 14:56:10 +02:00
parent 72c31f9bcd
commit 75088ccdb5
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GPG key ID: 32B53D2D16FC4118
1 changed files with 27 additions and 6 deletions
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33
src/code/z_room.c
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@ -71,7 +71,7 @@ void Room_Draw0(PlayState* play, Room* room, u32 flags) {
typedef struct MeshHeader2EntryLinked {
/* 0x00 */ MeshHeader2Entry* meshHeader2Entry;
/* 0x04 */ f32 unk_04_zDiff;
/* 0x04 */ f32 startZ;
/* 0x08 */ struct MeshHeader2EntryLinked* prev;
/* 0x0C */ struct MeshHeader2EntryLinked* next;
} MeshHeader2EntryLinked; // size = 0x10
@ -93,16 +93,19 @@ void Room_Draw2(PlayState* play, Room* room, u32 flags) {
s32 pad2;
MeshHeader2Entry* meshHeader2Entries;
MeshHeader2Entry* meshHeader2EntryIter;
f32 temp_f2_zDiff;
f32 entryStartZ;
OPEN_DISPS(play->state.gfxCtx, "../z_room.c", 287);
if (flags & ROOM_DRAW_OPA) {
func_800342EC(&D_801270A0, play);
gSPSegment(POLY_OPA_DISP++, 0x03, room->segment);
func_80093C80(play);
gSPMatrix(POLY_OPA_DISP++, &gMtxClear, G_MTX_MODELVIEW | G_MTX_LOAD);
}
if (1) {}
if (flags & ROOM_DRAW_XLU) {
func_8003435C(&D_801270A0, play);
gSPSegment(POLY_XLU_DISP++, 0x03, room->segment);
@ -116,25 +119,39 @@ void Room_Draw2(PlayState* play, Room* room, u32 flags) {
ASSERT(meshHeader2->numEntries <= ARRAY_COUNT(linkedEntriesBuffer), "polygon2->num <= SHAPE_SORT_MAX",
"../z_room.c", 317);
meshHeader2Entries = meshHeader2Entry;
// Pick and sort entries by depth
for (i = 0; i < meshHeader2->numEntries; i++, meshHeader2Entry++) {
// Project the entry position, to get the depth it is at.
pos.x = meshHeader2Entry->pos.x;
pos.y = meshHeader2Entry->pos.y;
pos.z = meshHeader2Entry->pos.z;
SkinMatrix_Vec3fMtxFMultXYZW(&play->viewProjectionMtxF, &pos, &projectedPos, &projectedW);
// If the entry isn't fully before the rendered depth range
if (-(f32)meshHeader2Entry->radius < projectedPos.z) {
temp_f2_zDiff = projectedPos.z - meshHeader2Entry->radius;
if (temp_f2_zDiff < play->lightCtx.fogFar) {
// Compute the depth at which this entry starts
entryStartZ = projectedPos.z - meshHeader2Entry->radius;
// If the entry isn't fully after the rendered depth range
if (entryStartZ < play->lightCtx.fogFar) {
// This entry will be rendered
insert->meshHeader2Entry = meshHeader2Entry;
insert->unk_04_zDiff = temp_f2_zDiff;
insert->startZ = entryStartZ;
// Insert into the linked list, ordered by ascending start depth
iter = head;
if (iter == NULL) {
head = tail = insert;
insert->prev = insert->next = NULL;
} else {
do {
if (insert->unk_04_zDiff < iter->unk_04_zDiff) {
if (insert->startZ < iter->startZ) {
break;
}
iter = iter->next;
@ -156,6 +173,7 @@ void Room_Draw2(PlayState* play, Room* room, u32 flags) {
insert->next = iter;
}
}
insert++;
}
}
@ -163,11 +181,14 @@ void Room_Draw2(PlayState* play, Room* room, u32 flags) {
R_MESH2_NUM_ALL_ENTRIES = meshHeader2->numEntries & 0xFFFF & 0xFFFF & 0xFFFF; // if this is real then I might not be
// Draw entries, from nearest to furthest
for (i = 1; head != NULL; head = head->next, i++) {
Gfx* displayList;
meshHeader2Entry = head->meshHeader2Entry;
if (R_MESH2_DEBUG_MODE != 0) {
// Debug mode drawing
// This loop does nothing
meshHeader2EntryIter = meshHeader2Entries;