573526dae5
Four small wins on top of the grouped-instanced refactor. 1. Drop unused animState lookup. Was a side-effect-free _entitySpawnAdapter.GetState call per per-instance entity, made redundant by the Issue #47 fix that trusts MeshRefs. 2. Front-to-back sort opaque groups. Squared distance from camera to each group's first-instance translation; ascending sort. Lets the GPU's depth test reject fragments behind closer geometry — real win on dense scenes (Holtburg courtyard, Foundry interior). 3. Per-entity AABB frustum cull. 5m-radius AABB check per entity before walking parts. Skips work for distant entities even when their landblock is partially visible. Animated entities (other characters, NPCs, monsters) bypass — they always need per-frame work for animation regardless. Conservative radius covers typical entity bounds; large outliers stay landblock-culled. 4. Memoize palette hash per entity. TextureCache.HashPaletteOverride is now internal; new GetOrUploadWithPaletteOverride overload takes a precomputed hash. The dispatcher computes it ONCE per entity and reuses across every (part, batch) lookup, avoiding the per-batch FNV-1a fold over SubPalettes. Trees / scenery without palette overrides skip entirely (palHash stays 0). Visual output unchanged; FPS up further, especially in dense scenes. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
521 lines
21 KiB
C#
521 lines
21 KiB
C#
using System;
|
||
using System.Collections.Generic;
|
||
using System.Numerics;
|
||
using AcDream.Core.Meshing;
|
||
using AcDream.Core.Terrain;
|
||
using AcDream.Core.World;
|
||
using Chorizite.OpenGLSDLBackend.Lib;
|
||
using Silk.NET.OpenGL;
|
||
|
||
namespace AcDream.App.Rendering.Wb;
|
||
|
||
/// <summary>
|
||
/// Draws entities using WB's <see cref="ObjectRenderData"/> (a single global
|
||
/// VAO/VBO/IBO under modern rendering) with acdream's <see cref="TextureCache"/>
|
||
/// for texture resolution and <see cref="AcSurfaceMetadataTable"/> for
|
||
/// translucency classification.
|
||
///
|
||
/// <para>
|
||
/// <b>Atlas-tier</b> entities (<c>ServerGuid == 0</c>): mesh data comes from WB's
|
||
/// <see cref="ObjectMeshManager"/> via <see cref="WbMeshAdapter.TryGetRenderData"/>.
|
||
/// Textures resolve through <see cref="TextureCache.GetOrUpload"/> using the batch's
|
||
/// <c>SurfaceId</c>.
|
||
/// </para>
|
||
///
|
||
/// <para>
|
||
/// <b>Per-instance-tier</b> entities (<c>ServerGuid != 0</c>): mesh data also from
|
||
/// WB, but textures resolve through <see cref="TextureCache"/> with palette and
|
||
/// surface overrides applied. <see cref="AnimatedEntityState"/> is currently
|
||
/// unused at draw time — GameWindow's spawn path already bakes AnimPartChanges +
|
||
/// GfxObjDegradeResolver (Issue #47 close-detail mesh) into <c>MeshRefs</c>.
|
||
/// </para>
|
||
///
|
||
/// <para>
|
||
/// <b>GL strategy:</b> GROUPED instanced drawing. All visible (entity, batch)
|
||
/// pairs are bucketed by <see cref="GroupKey"/>; within a group a single
|
||
/// <c>glDrawElementsInstancedBaseVertexBaseInstance</c> renders all instances.
|
||
/// All matrices for the frame land in one shared instance VBO via a single
|
||
/// <c>BufferData</c> upload. This drops draw calls from O(entities×batches)
|
||
/// to O(unique GfxObj×batch×texture) — typically two orders of magnitude fewer.
|
||
/// </para>
|
||
///
|
||
/// <para>
|
||
/// <b>Shader:</b> reuses <c>mesh_instanced</c> (vert locations 0-2 = Position/
|
||
/// Normal/UV from WB's <c>VertexPositionNormalTexture</c>; locations 3-6 = instance
|
||
/// matrix from our VBO). WB's 32-byte vertex stride is compatible.
|
||
/// </para>
|
||
///
|
||
/// <para>
|
||
/// <b>Modern rendering assumption:</b> WB's <c>_useModernRendering</c> path (GL
|
||
/// 4.3 + bindless) puts every mesh in a single shared VAO/VBO/IBO and uses
|
||
/// <c>FirstIndex</c> + <c>BaseVertex</c> per batch. The dispatcher honors those
|
||
/// offsets via <c>DrawElementsInstancedBaseVertex(BaseInstance)</c>. The legacy
|
||
/// per-mesh-VAO path also works since FirstIndex/BaseVertex are zero there.
|
||
/// </para>
|
||
/// </summary>
|
||
public sealed unsafe class WbDrawDispatcher : IDisposable
|
||
{
|
||
private readonly GL _gl;
|
||
private readonly Shader _shader;
|
||
private readonly TextureCache _textures;
|
||
private readonly WbMeshAdapter _meshAdapter;
|
||
private readonly EntitySpawnAdapter _entitySpawnAdapter;
|
||
|
||
private readonly uint _instanceVbo;
|
||
private readonly HashSet<uint> _patchedVaos = new();
|
||
|
||
// Per-frame scratch — reused across frames to avoid per-frame allocation.
|
||
private readonly Dictionary<GroupKey, InstanceGroup> _groups = new();
|
||
private readonly List<InstanceGroup> _opaqueDraws = new();
|
||
private readonly List<InstanceGroup> _translucentDraws = new();
|
||
private float[] _instanceBuffer = new float[256 * 16]; // grow on demand, never shrink
|
||
|
||
// Per-entity-cull AABB radius. Conservative — covers most entities; large
|
||
// outliers (long banners, tall columns) are still landblock-culled.
|
||
private const float PerEntityCullRadius = 5.0f;
|
||
|
||
private bool _disposed;
|
||
|
||
// Diagnostic counters logged once per ~5s under ACDREAM_WB_DIAG=1.
|
||
private int _entitiesSeen;
|
||
private int _entitiesDrawn;
|
||
private int _meshesMissing;
|
||
private int _drawsIssued;
|
||
private int _instancesIssued;
|
||
private long _lastLogTick;
|
||
|
||
public WbDrawDispatcher(
|
||
GL gl,
|
||
Shader shader,
|
||
TextureCache textures,
|
||
WbMeshAdapter meshAdapter,
|
||
EntitySpawnAdapter entitySpawnAdapter)
|
||
{
|
||
ArgumentNullException.ThrowIfNull(gl);
|
||
ArgumentNullException.ThrowIfNull(shader);
|
||
ArgumentNullException.ThrowIfNull(textures);
|
||
ArgumentNullException.ThrowIfNull(meshAdapter);
|
||
ArgumentNullException.ThrowIfNull(entitySpawnAdapter);
|
||
|
||
_gl = gl;
|
||
_shader = shader;
|
||
_textures = textures;
|
||
_meshAdapter = meshAdapter;
|
||
_entitySpawnAdapter = entitySpawnAdapter;
|
||
|
||
_instanceVbo = _gl.GenBuffer();
|
||
}
|
||
|
||
public static Matrix4x4 ComposePartWorldMatrix(
|
||
Matrix4x4 entityWorld,
|
||
Matrix4x4 animOverride,
|
||
Matrix4x4 restPose)
|
||
=> restPose * animOverride * entityWorld;
|
||
|
||
public void Draw(
|
||
ICamera camera,
|
||
IEnumerable<(uint LandblockId, Vector3 AabbMin, Vector3 AabbMax, IReadOnlyList<WorldEntity> Entities)> landblockEntries,
|
||
FrustumPlanes? frustum = null,
|
||
uint? neverCullLandblockId = null,
|
||
HashSet<uint>? visibleCellIds = null,
|
||
HashSet<uint>? animatedEntityIds = null)
|
||
{
|
||
_shader.Use();
|
||
var vp = camera.View * camera.Projection;
|
||
_shader.SetMatrix4("uViewProjection", vp);
|
||
|
||
bool diag = string.Equals(Environment.GetEnvironmentVariable("ACDREAM_WB_DIAG"), "1", StringComparison.Ordinal);
|
||
|
||
// Camera world-space position for front-to-back sort (perf #2). The view
|
||
// matrix is the inverse of the camera's world transform, so the world
|
||
// translation lives in the inverse's translation row.
|
||
Vector3 camPos = Vector3.Zero;
|
||
if (Matrix4x4.Invert(camera.View, out var invView))
|
||
camPos = invView.Translation;
|
||
|
||
// ── Phase 1: clear groups, walk entities, build groups ──────────────
|
||
foreach (var grp in _groups.Values) grp.Matrices.Clear();
|
||
|
||
var metaTable = _meshAdapter.MetadataTable;
|
||
uint anyVao = 0;
|
||
|
||
foreach (var entry in landblockEntries)
|
||
{
|
||
bool landblockVisible = frustum is null
|
||
|| entry.LandblockId == neverCullLandblockId
|
||
|| FrustumCuller.IsAabbVisible(frustum.Value, entry.AabbMin, entry.AabbMax);
|
||
|
||
if (!landblockVisible && (animatedEntityIds is null || animatedEntityIds.Count == 0))
|
||
continue;
|
||
|
||
foreach (var entity in entry.Entities)
|
||
{
|
||
if (entity.MeshRefs.Count == 0) continue;
|
||
|
||
bool isAnimated = animatedEntityIds?.Contains(entity.Id) == true;
|
||
if (!landblockVisible && !isAnimated) continue;
|
||
|
||
if (entity.ParentCellId.HasValue && visibleCellIds is not null
|
||
&& !visibleCellIds.Contains(entity.ParentCellId.Value))
|
||
continue;
|
||
|
||
// Per-entity AABB frustum cull (perf #3). Skips work for distant
|
||
// entities even when their landblock is visible. Animated
|
||
// entities bypass — they're tracked at landblock level + need
|
||
// per-frame work for animation regardless. Conservative 5m
|
||
// radius covers typical entity bounds.
|
||
if (frustum is not null && !isAnimated && entry.LandblockId != neverCullLandblockId)
|
||
{
|
||
var p = entity.Position;
|
||
var aMin = new Vector3(p.X - PerEntityCullRadius, p.Y - PerEntityCullRadius, p.Z - PerEntityCullRadius);
|
||
var aMax = new Vector3(p.X + PerEntityCullRadius, p.Y + PerEntityCullRadius, p.Z + PerEntityCullRadius);
|
||
if (!FrustumCuller.IsAabbVisible(frustum.Value, aMin, aMax))
|
||
continue;
|
||
}
|
||
|
||
if (diag) _entitiesSeen++;
|
||
|
||
var entityWorld =
|
||
Matrix4x4.CreateFromQuaternion(entity.Rotation) *
|
||
Matrix4x4.CreateTranslation(entity.Position);
|
||
|
||
// Compute palette-override hash ONCE per entity (perf #4).
|
||
// Reused across every (part, batch) lookup so the FNV-1a fold
|
||
// over SubPalettes runs once instead of N times. Zero when the
|
||
// entity has no palette override (trees, scenery).
|
||
ulong palHash = 0;
|
||
if (entity.PaletteOverride is not null)
|
||
palHash = TextureCache.HashPaletteOverride(entity.PaletteOverride);
|
||
|
||
bool drewAny = false;
|
||
for (int partIdx = 0; partIdx < entity.MeshRefs.Count; partIdx++)
|
||
{
|
||
// Note: GameWindow's spawn path already applies
|
||
// AnimPartChanges + GfxObjDegradeResolver (Issue #47 fix —
|
||
// close-detail mesh swap for humanoids) to MeshRefs. We
|
||
// trust MeshRefs as the source of truth here. AnimatedEntityState's
|
||
// overrides become relevant only for hot-swap (0xF625
|
||
// ObjDescEvent) which today rebuilds MeshRefs anyway.
|
||
var meshRef = entity.MeshRefs[partIdx];
|
||
ulong gfxObjId = meshRef.GfxObjId;
|
||
|
||
var renderData = _meshAdapter.TryGetRenderData(gfxObjId);
|
||
if (renderData is null)
|
||
{
|
||
if (diag) _meshesMissing++;
|
||
continue;
|
||
}
|
||
drewAny = true;
|
||
if (anyVao == 0) anyVao = renderData.VAO;
|
||
|
||
if (renderData.IsSetup && renderData.SetupParts.Count > 0)
|
||
{
|
||
foreach (var (partGfxObjId, partTransform) in renderData.SetupParts)
|
||
{
|
||
var partData = _meshAdapter.TryGetRenderData(partGfxObjId);
|
||
if (partData is null) continue;
|
||
|
||
var model = ComposePartWorldMatrix(
|
||
entityWorld, meshRef.PartTransform, partTransform);
|
||
|
||
ClassifyBatches(partData, partGfxObjId, model, entity, meshRef, palHash, metaTable);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
var model = meshRef.PartTransform * entityWorld;
|
||
ClassifyBatches(renderData, gfxObjId, model, entity, meshRef, palHash, metaTable);
|
||
}
|
||
}
|
||
|
||
if (diag && drewAny) _entitiesDrawn++;
|
||
}
|
||
}
|
||
|
||
// Nothing visible — skip the GL pass entirely.
|
||
if (anyVao == 0)
|
||
{
|
||
if (diag) MaybeFlushDiag();
|
||
return;
|
||
}
|
||
|
||
// ── Phase 2: lay matrices out contiguously, assign per-group offsets,
|
||
// split into opaque/translucent + compute sort keys ─────────
|
||
int totalInstances = 0;
|
||
foreach (var grp in _groups.Values) totalInstances += grp.Matrices.Count;
|
||
if (totalInstances == 0)
|
||
{
|
||
if (diag) MaybeFlushDiag();
|
||
return;
|
||
}
|
||
|
||
int needed = totalInstances * 16;
|
||
if (_instanceBuffer.Length < needed)
|
||
_instanceBuffer = new float[needed + 256 * 16]; // headroom
|
||
|
||
_opaqueDraws.Clear();
|
||
_translucentDraws.Clear();
|
||
|
||
int cursor = 0;
|
||
foreach (var grp in _groups.Values)
|
||
{
|
||
if (grp.Matrices.Count == 0) continue;
|
||
|
||
grp.FirstInstance = cursor;
|
||
grp.InstanceCount = grp.Matrices.Count;
|
||
|
||
// Use the first instance's translation as the group's representative
|
||
// position for front-to-back sort (perf #2). Cheap heuristic; works
|
||
// well when instances of one group are spatially coherent
|
||
// (typical for trees in one landblock area, NPCs at one spawn).
|
||
var firstM = grp.Matrices[0];
|
||
var grpPos = new Vector3(firstM.M41, firstM.M42, firstM.M43);
|
||
grp.SortDistance = Vector3.DistanceSquared(camPos, grpPos);
|
||
|
||
for (int i = 0; i < grp.Matrices.Count; i++)
|
||
{
|
||
WriteMatrix(_instanceBuffer, cursor * 16, grp.Matrices[i]);
|
||
cursor++;
|
||
}
|
||
|
||
if (grp.Translucency == TranslucencyKind.Opaque || grp.Translucency == TranslucencyKind.ClipMap)
|
||
_opaqueDraws.Add(grp);
|
||
else
|
||
_translucentDraws.Add(grp);
|
||
}
|
||
|
||
// Front-to-back sort for opaque pass: nearer groups draw first so the
|
||
// depth test rejects fragments hidden behind them, reducing fragment
|
||
// shader cost from overdraw on dense scenes (Holtburg courtyard,
|
||
// Foundry interior).
|
||
_opaqueDraws.Sort(static (a, b) => a.SortDistance.CompareTo(b.SortDistance));
|
||
|
||
// ── Phase 3: one upload of all matrices ─────────────────────────────
|
||
_gl.BindBuffer(BufferTargetARB.ArrayBuffer, _instanceVbo);
|
||
fixed (float* p = _instanceBuffer)
|
||
_gl.BufferData(BufferTargetARB.ArrayBuffer,
|
||
(nuint)(totalInstances * 16 * sizeof(float)), p, BufferUsageARB.DynamicDraw);
|
||
|
||
// ── Phase 4: bind VAO once (modern rendering shares one global VAO) ──
|
||
EnsureInstanceAttribs(anyVao);
|
||
_gl.BindVertexArray(anyVao);
|
||
|
||
// ── Phase 5: opaque + ClipMap pass (front-to-back sorted) ───────────
|
||
if (string.Equals(Environment.GetEnvironmentVariable("ACDREAM_NO_CULL"), "1", StringComparison.Ordinal))
|
||
_gl.Disable(EnableCap.CullFace);
|
||
|
||
foreach (var grp in _opaqueDraws)
|
||
{
|
||
_shader.SetInt("uTranslucencyKind", (int)grp.Translucency);
|
||
DrawGroup(grp);
|
||
}
|
||
|
||
// ── Phase 6: translucent pass ───────────────────────────────────────
|
||
_gl.Enable(EnableCap.Blend);
|
||
_gl.DepthMask(false);
|
||
|
||
if (string.Equals(Environment.GetEnvironmentVariable("ACDREAM_NO_CULL"), "1", StringComparison.Ordinal))
|
||
{
|
||
_gl.Disable(EnableCap.CullFace);
|
||
}
|
||
else
|
||
{
|
||
_gl.Enable(EnableCap.CullFace);
|
||
_gl.CullFace(TriangleFace.Back);
|
||
_gl.FrontFace(FrontFaceDirection.Ccw);
|
||
}
|
||
|
||
foreach (var grp in _translucentDraws)
|
||
{
|
||
switch (grp.Translucency)
|
||
{
|
||
case TranslucencyKind.Additive:
|
||
_gl.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.One);
|
||
break;
|
||
case TranslucencyKind.InvAlpha:
|
||
_gl.BlendFunc(BlendingFactor.OneMinusSrcAlpha, BlendingFactor.SrcAlpha);
|
||
break;
|
||
default:
|
||
_gl.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
|
||
break;
|
||
}
|
||
|
||
_shader.SetInt("uTranslucencyKind", (int)grp.Translucency);
|
||
DrawGroup(grp);
|
||
}
|
||
|
||
_gl.DepthMask(true);
|
||
_gl.Disable(EnableCap.Blend);
|
||
_gl.Disable(EnableCap.CullFace);
|
||
_gl.BindVertexArray(0);
|
||
|
||
if (diag)
|
||
{
|
||
_drawsIssued += _opaqueDraws.Count + _translucentDraws.Count;
|
||
_instancesIssued += totalInstances;
|
||
MaybeFlushDiag();
|
||
}
|
||
}
|
||
|
||
private void DrawGroup(InstanceGroup grp)
|
||
{
|
||
_gl.ActiveTexture(TextureUnit.Texture0);
|
||
_gl.BindTexture(TextureTarget.Texture2D, grp.TextureHandle);
|
||
_gl.BindBuffer(BufferTargetARB.ElementArrayBuffer, grp.Ibo);
|
||
|
||
// BaseInstance offsets the per-instance attribute fetches into our
|
||
// shared instance VBO so each group reads its own slice. Requires
|
||
// GL_ARB_base_instance (GL 4.2+); WB requires 4.3 so this is available.
|
||
_gl.DrawElementsInstancedBaseVertexBaseInstance(
|
||
PrimitiveType.Triangles,
|
||
(uint)grp.IndexCount,
|
||
DrawElementsType.UnsignedShort,
|
||
(void*)(grp.FirstIndex * sizeof(ushort)),
|
||
(uint)grp.InstanceCount,
|
||
grp.BaseVertex,
|
||
(uint)grp.FirstInstance);
|
||
}
|
||
|
||
private void MaybeFlushDiag()
|
||
{
|
||
long now = Environment.TickCount64;
|
||
if (now - _lastLogTick > 5000)
|
||
{
|
||
Console.WriteLine(
|
||
$"[WB-DIAG] entSeen={_entitiesSeen} entDrawn={_entitiesDrawn} meshMissing={_meshesMissing} drawsIssued={_drawsIssued} instances={_instancesIssued} groups={_groups.Count}");
|
||
_entitiesSeen = _entitiesDrawn = _meshesMissing = _drawsIssued = _instancesIssued = 0;
|
||
_lastLogTick = now;
|
||
}
|
||
}
|
||
|
||
private void ClassifyBatches(
|
||
ObjectRenderData renderData,
|
||
ulong gfxObjId,
|
||
Matrix4x4 model,
|
||
WorldEntity entity,
|
||
MeshRef meshRef,
|
||
ulong palHash,
|
||
AcSurfaceMetadataTable metaTable)
|
||
{
|
||
for (int batchIdx = 0; batchIdx < renderData.Batches.Count; batchIdx++)
|
||
{
|
||
var batch = renderData.Batches[batchIdx];
|
||
|
||
TranslucencyKind translucency;
|
||
if (metaTable.TryLookup(gfxObjId, batchIdx, out var meta))
|
||
{
|
||
translucency = meta.Translucency;
|
||
}
|
||
else
|
||
{
|
||
translucency = batch.IsAdditive ? TranslucencyKind.Additive
|
||
: batch.IsTransparent ? TranslucencyKind.AlphaBlend
|
||
: TranslucencyKind.Opaque;
|
||
}
|
||
|
||
uint texHandle = ResolveTexture(entity, meshRef, batch, palHash);
|
||
if (texHandle == 0) continue;
|
||
|
||
var key = new GroupKey(
|
||
batch.IBO, batch.FirstIndex, (int)batch.BaseVertex,
|
||
batch.IndexCount, texHandle, translucency);
|
||
|
||
if (!_groups.TryGetValue(key, out var grp))
|
||
{
|
||
grp = new InstanceGroup
|
||
{
|
||
Ibo = batch.IBO,
|
||
FirstIndex = batch.FirstIndex,
|
||
BaseVertex = (int)batch.BaseVertex,
|
||
IndexCount = batch.IndexCount,
|
||
TextureHandle = texHandle,
|
||
Translucency = translucency,
|
||
};
|
||
_groups[key] = grp;
|
||
}
|
||
grp.Matrices.Add(model);
|
||
}
|
||
}
|
||
|
||
private uint ResolveTexture(WorldEntity entity, MeshRef meshRef, ObjectRenderBatch batch, ulong palHash)
|
||
{
|
||
// WB stores the surface id on batch.Key.SurfaceId (TextureKey struct);
|
||
// batch.SurfaceId is unset (zero) for batches built by ObjectMeshManager.
|
||
uint surfaceId = batch.Key.SurfaceId;
|
||
if (surfaceId == 0 || surfaceId == 0xFFFFFFFF) return 0;
|
||
|
||
uint overrideOrigTex = 0;
|
||
bool hasOrigTexOverride = meshRef.SurfaceOverrides is not null
|
||
&& meshRef.SurfaceOverrides.TryGetValue(surfaceId, out overrideOrigTex);
|
||
uint? origTexOverride = hasOrigTexOverride ? overrideOrigTex : (uint?)null;
|
||
|
||
if (entity.PaletteOverride is not null)
|
||
{
|
||
// perf #4: pass the entity-precomputed palette hash so TextureCache
|
||
// can skip its internal HashPaletteOverride for repeat lookups
|
||
// within the same character.
|
||
return _textures.GetOrUploadWithPaletteOverride(
|
||
surfaceId, origTexOverride, entity.PaletteOverride, palHash);
|
||
}
|
||
else if (hasOrigTexOverride)
|
||
{
|
||
return _textures.GetOrUploadWithOrigTextureOverride(surfaceId, overrideOrigTex);
|
||
}
|
||
else
|
||
{
|
||
return _textures.GetOrUpload(surfaceId);
|
||
}
|
||
}
|
||
|
||
private void EnsureInstanceAttribs(uint vao)
|
||
{
|
||
if (!_patchedVaos.Add(vao)) return;
|
||
|
||
_gl.BindVertexArray(vao);
|
||
_gl.BindBuffer(BufferTargetARB.ArrayBuffer, _instanceVbo);
|
||
for (uint row = 0; row < 4; row++)
|
||
{
|
||
uint loc = 3 + row;
|
||
_gl.EnableVertexAttribArray(loc);
|
||
_gl.VertexAttribPointer(loc, 4, VertexAttribPointerType.Float, false, 64, (void*)(row * 16));
|
||
_gl.VertexAttribDivisor(loc, 1);
|
||
}
|
||
}
|
||
|
||
private static void WriteMatrix(float[] buf, int offset, in Matrix4x4 m)
|
||
{
|
||
buf[offset + 0] = m.M11; buf[offset + 1] = m.M12; buf[offset + 2] = m.M13; buf[offset + 3] = m.M14;
|
||
buf[offset + 4] = m.M21; buf[offset + 5] = m.M22; buf[offset + 6] = m.M23; buf[offset + 7] = m.M24;
|
||
buf[offset + 8] = m.M31; buf[offset + 9] = m.M32; buf[offset + 10] = m.M33; buf[offset + 11] = m.M34;
|
||
buf[offset + 12] = m.M41; buf[offset + 13] = m.M42; buf[offset + 14] = m.M43; buf[offset + 15] = m.M44;
|
||
}
|
||
|
||
public void Dispose()
|
||
{
|
||
if (_disposed) return;
|
||
_disposed = true;
|
||
_gl.DeleteBuffer(_instanceVbo);
|
||
}
|
||
|
||
private readonly record struct GroupKey(
|
||
uint Ibo,
|
||
uint FirstIndex,
|
||
int BaseVertex,
|
||
int IndexCount,
|
||
uint TextureHandle,
|
||
TranslucencyKind Translucency);
|
||
|
||
private sealed class InstanceGroup
|
||
{
|
||
public uint Ibo;
|
||
public uint FirstIndex;
|
||
public int BaseVertex;
|
||
public int IndexCount;
|
||
public uint TextureHandle;
|
||
public TranslucencyKind Translucency;
|
||
public int FirstInstance; // offset into the shared instance VBO (in instances, not bytes)
|
||
public int InstanceCount;
|
||
public float SortDistance; // squared distance from camera to first instance, for opaque sort
|
||
public readonly List<Matrix4x4> Matrices = new();
|
||
}
|
||
}
|