69 lines
1.9 KiB
Go
69 lines
1.9 KiB
Go
//go:build !go1.21
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// +build !go1.21
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package rl
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/*
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#include "raylib.h"
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#include <stdlib.h>
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*/
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import "C"
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import (
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"runtime"
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"golang.org/x/exp/slices"
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)
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// List of VaoIDs of meshes created by calling UploadMesh()
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// Used by UnloadMesh() to determine if mesh is go-managed or C-allocated
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var goManagedMeshIDs = make([]uint32, 0)
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// UploadMesh - Upload vertex data into a VAO (if supported) and VBO
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func UploadMesh(mesh *Mesh, dynamic bool) {
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// check if mesh has already been uploaded to prevent duplication
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if mesh.VaoID != 0 {
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TraceLog(LogWarning, "VAO: [ID %d] Trying to re-load an already loaded mesh", mesh.VaoID)
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return
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}
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defer runtime.KeepAlive(mesh.Vertices)
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defer runtime.KeepAlive(mesh.Texcoords)
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defer runtime.KeepAlive(mesh.Texcoords2)
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defer runtime.KeepAlive(mesh.Normals)
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defer runtime.KeepAlive(mesh.Tangents)
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defer runtime.KeepAlive(mesh.Colors)
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defer runtime.KeepAlive(mesh.Indices)
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defer runtime.KeepAlive(mesh.AnimVertices)
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defer runtime.KeepAlive(mesh.AnimNormals)
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defer runtime.KeepAlive(mesh.BoneIds)
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defer runtime.KeepAlive(mesh.BoneWeights)
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defer runtime.KeepAlive(mesh.VboID)
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cMesh := mesh.cptr()
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C.UploadMesh(cMesh, C.bool(dynamic))
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// Add new mesh VaoID to list
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goManagedMeshIDs = append(goManagedMeshIDs, mesh.VaoID)
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}
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// UnloadMesh - Unload mesh from memory (RAM and/or VRAM)
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func UnloadMesh(mesh *Mesh) {
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// Check list of go-managed mesh IDs
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if slices.Contains(goManagedMeshIDs, mesh.VaoID) {
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// C.UnloadMesh() only needs to read the VaoID & VboID
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// passing a temporary struct with all other fields nil makes it safe for the C code to call free()
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tempMesh := Mesh{
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VaoID: mesh.VaoID,
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VboID: mesh.VboID,
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}
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cmesh := tempMesh.cptr()
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C.UnloadMesh(*cmesh)
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// remove mesh VaoID from list
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goManagedMeshIDs = slices.DeleteFunc(goManagedMeshIDs, func(id uint32) bool { return id == mesh.VaoID })
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} else {
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cmesh := mesh.cptr()
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C.UnloadMesh(*cmesh)
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}
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}
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