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Documentation for skybox drawing (#1515)

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Tharo 2023-07-04 03:30:53 +01:00 • committed by GitHub
parent d3c6836df7
commit 100576edc9
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4 changed files with 425 additions and 319 deletions
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56
src/code/z_vr_box_draw.c
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@ -23,8 +23,8 @@ void Skybox_Draw(SkyboxContext* skyboxCtx, GraphicsContext* gfxCtx, s16 skyboxId
gDPSetPrimColor(POLY_OPA_DISP++, 0x00, 0x00, 0, 0, 0, blend);
gSPTexture(POLY_OPA_DISP++, 0x8000, 0x8000, 0, G_TX_RENDERTILE, G_ON);
// Prepare matrix
sSkyboxDrawMatrix = Graph_Alloc(gfxCtx, sizeof(Mtx));
Matrix_Translate(x, y, z, MTXMODE_NEW);
Matrix_Scale(1.0f, 1.0f, 1.0f, MTXMODE_APPLY);
Matrix_RotateX(skyboxCtx->rot.x, MTXMODE_APPLY);
@ -33,45 +33,61 @@ void Skybox_Draw(SkyboxContext* skyboxCtx, GraphicsContext* gfxCtx, s16 skyboxId
Matrix_ToMtx(sSkyboxDrawMatrix, "../z_vr_box_draw.c", 76);
gSPMatrix(POLY_OPA_DISP++, sSkyboxDrawMatrix, G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
// Enable magic square RGB dithering and bilinear filtering
gDPSetColorDither(POLY_OPA_DISP++, G_CD_MAGICSQ);
gDPSetTextureFilter(POLY_OPA_DISP++, G_TF_BILERP);
// All skyboxes use CI8 textures with an RGBA16 palette
gDPLoadTLUT_pal256(POLY_OPA_DISP++, skyboxCtx->palettes[0]);
gDPSetTextureLUT(POLY_OPA_DISP++, G_TT_RGBA16);
// Enable texture filtering RDP pipeline stages for bilinear filtering
gDPSetTextureConvert(POLY_OPA_DISP++, G_TC_FILT);
if (skyboxCtx->unk_140) {
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[0]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[1]);
if (skyboxCtx->drawType != SKYBOX_DRAW_128) {
// 256x256 textures, per-face palettes
// 2, 3 or 4 faces
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[0]); // -z face upper
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[1]); // -z face lower
gDPPipeSync(POLY_OPA_DISP++);
gDPLoadTLUT_pal256(POLY_OPA_DISP++, skyboxCtx->palettes[1]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[2]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[3]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[2]); // +x face upper
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[3]); // +x face lower
if (skyboxId != SKYBOX_BAZAAR) {
if (skyboxId <= SKYBOX_HOUSE_KAKARIKO || skyboxId > SKYBOX_BOMBCHU_SHOP) {
gDPPipeSync(POLY_OPA_DISP++);
gDPLoadTLUT_pal256(POLY_OPA_DISP++, skyboxCtx->palettes[2]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[4]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[5]);
if (skyboxId < SKYBOX_KOKIRI_SHOP || skyboxId > SKYBOX_BOMBCHU_SHOP) {
// Skip remaining faces for most shop skyboxes
gDPPipeSync(POLY_OPA_DISP++);
if (skyboxCtx->unk_140 != 2) {
gDPLoadTLUT_pal256(POLY_OPA_DISP++, skyboxCtx->palettes[2]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[4]); // +z face upper
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[5]); // +z face lower
// Note this pipesync is slightly misplaced and would be better off inside the condition
gDPPipeSync(POLY_OPA_DISP++);
if (skyboxCtx->drawType != SKYBOX_DRAW_256_3FACE) {
gDPLoadTLUT_pal256(POLY_OPA_DISP++, skyboxCtx->palettes[3]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[6]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[7]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[6]); // -x face upper
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[7]); // -x face lower
}
}
}
} else {
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[0]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[2]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[4]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[6]);
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[8]);
// 128x128 and 128x64 textures
// 5 or 6 faces
// Draw each face
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[0]); // -z face
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[2]); // +z face
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[4]); // -x face
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[6]); // +x face
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[8]); // +y face
if (skyboxId == SKYBOX_CUTSCENE_MAP) {
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[10]);
// Skip the bottom face in the cutscene map
gSPDisplayList(POLY_OPA_DISP++, skyboxCtx->dListBuf[10]); // -y face
}
}