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Materials support - MATL chunk #25
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@mik14a
mik14a committed Nov 8, 2023
2 parents 5823790 + 2295d82 commit df2dea1
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Showing 4 changed files with 108 additions and 27 deletions.
105 changes: 78 additions & 27 deletions Source/VOX4UEditor/Private/Vox.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -10,23 +10,23 @@ DEFINE_LOG_CATEGORY_STATIC(LogVox, Log, All)
/**
* MagicaVoxel default palette
*/
static const uint32 MagicaVoxelDefaultPalette[256] = {
0xffffffff, 0xffffffcc, 0xffffff99, 0xffffff66, 0xffffff33, 0xffffff00, 0xffffccff, 0xffffcccc, 0xffffcc99, 0xffffcc66, 0xffffcc33, 0xffffcc00, 0xffff99ff, 0xffff99cc, 0xffff9999, 0xffff9966,
0xffff9933, 0xffff9900, 0xffff66ff, 0xffff66cc, 0xffff6699, 0xffff6666, 0xffff6633, 0xffff6600, 0xffff33ff, 0xffff33cc, 0xffff3399, 0xffff3366, 0xffff3333, 0xffff3300, 0xffff00ff, 0xffff00cc,
0xffff0099, 0xffff0066, 0xffff0033, 0xffff0000, 0xffccffff, 0xffccffcc, 0xffccff99, 0xffccff66, 0xffccff33, 0xffccff00, 0xffccccff, 0xffcccccc, 0xffcccc99, 0xffcccc66, 0xffcccc33, 0xffcccc00,
0xffcc99ff, 0xffcc99cc, 0xffcc9999, 0xffcc9966, 0xffcc9933, 0xffcc9900, 0xffcc66ff, 0xffcc66cc, 0xffcc6699, 0xffcc6666, 0xffcc6633, 0xffcc6600, 0xffcc33ff, 0xffcc33cc, 0xffcc3399, 0xffcc3366,
0xffcc3333, 0xffcc3300, 0xffcc00ff, 0xffcc00cc, 0xffcc0099, 0xffcc0066, 0xffcc0033, 0xffcc0000, 0xff99ffff, 0xff99ffcc, 0xff99ff99, 0xff99ff66, 0xff99ff33, 0xff99ff00, 0xff99ccff, 0xff99cccc,
0xff99cc99, 0xff99cc66, 0xff99cc33, 0xff99cc00, 0xff9999ff, 0xff9999cc, 0xff999999, 0xff999966, 0xff999933, 0xff999900, 0xff9966ff, 0xff9966cc, 0xff996699, 0xff996666, 0xff996633, 0xff996600,
0xff9933ff, 0xff9933cc, 0xff993399, 0xff993366, 0xff993333, 0xff993300, 0xff9900ff, 0xff9900cc, 0xff990099, 0xff990066, 0xff990033, 0xff990000, 0xff66ffff, 0xff66ffcc, 0xff66ff99, 0xff66ff66,
0xff66ff33, 0xff66ff00, 0xff66ccff, 0xff66cccc, 0xff66cc99, 0xff66cc66, 0xff66cc33, 0xff66cc00, 0xff6699ff, 0xff6699cc, 0xff669999, 0xff669966, 0xff669933, 0xff669900, 0xff6666ff, 0xff6666cc,
0xff666699, 0xff666666, 0xff666633, 0xff666600, 0xff6633ff, 0xff6633cc, 0xff663399, 0xff663366, 0xff663333, 0xff663300, 0xff6600ff, 0xff6600cc, 0xff660099, 0xff660066, 0xff660033, 0xff660000,
0xff33ffff, 0xff33ffcc, 0xff33ff99, 0xff33ff66, 0xff33ff33, 0xff33ff00, 0xff33ccff, 0xff33cccc, 0xff33cc99, 0xff33cc66, 0xff33cc33, 0xff33cc00, 0xff3399ff, 0xff3399cc, 0xff339999, 0xff339966,
0xff339933, 0xff339900, 0xff3366ff, 0xff3366cc, 0xff336699, 0xff336666, 0xff336633, 0xff336600, 0xff3333ff, 0xff3333cc, 0xff333399, 0xff333366, 0xff333333, 0xff333300, 0xff3300ff, 0xff3300cc,
0xff330099, 0xff330066, 0xff330033, 0xff330000, 0xff00ffff, 0xff00ffcc, 0xff00ff99, 0xff00ff66, 0xff00ff33, 0xff00ff00, 0xff00ccff, 0xff00cccc, 0xff00cc99, 0xff00cc66, 0xff00cc33, 0xff00cc00,
0xff0099ff, 0xff0099cc, 0xff009999, 0xff009966, 0xff009933, 0xff009900, 0xff0066ff, 0xff0066cc, 0xff006699, 0xff006666, 0xff006633, 0xff006600, 0xff0033ff, 0xff0033cc, 0xff003399, 0xff003366,
0xff003333, 0xff003300, 0xff0000ff, 0xff0000cc, 0xff000099, 0xff000066, 0xff000033, 0xffee0000, 0xffdd0000, 0xffbb0000, 0xffaa0000, 0xff880000, 0xff770000, 0xff550000, 0xff440000, 0xff220000,
0xff110000, 0xff00ee00, 0xff00dd00, 0xff00bb00, 0xff00aa00, 0xff008800, 0xff007700, 0xff005500, 0xff004400, 0xff002200, 0xff001100, 0xff0000ee, 0xff0000dd, 0xff0000bb, 0xff0000aa, 0xff000088,
0xff000077, 0xff000055, 0xff000044, 0xff000022, 0xff000011, 0xffeeeeee, 0xffdddddd, 0xffbbbbbb, 0xffaaaaaa, 0xff888888, 0xff777777, 0xff555555, 0xff444444, 0xff222222, 0xff111111, 0xff000000
static const uint32 MagicaVoxelDefaultPalette[256] = {
0xffffffff, 0xffffffcc, 0xffffff99, 0xffffff66, 0xffffff33, 0xffffff00, 0xffffccff, 0xffffcccc, 0xffffcc99, 0xffffcc66, 0xffffcc33, 0xffffcc00, 0xffff99ff, 0xffff99cc, 0xffff9999, 0xffff9966,
0xffff9933, 0xffff9900, 0xffff66ff, 0xffff66cc, 0xffff6699, 0xffff6666, 0xffff6633, 0xffff6600, 0xffff33ff, 0xffff33cc, 0xffff3399, 0xffff3366, 0xffff3333, 0xffff3300, 0xffff00ff, 0xffff00cc,
0xffff0099, 0xffff0066, 0xffff0033, 0xffff0000, 0xffccffff, 0xffccffcc, 0xffccff99, 0xffccff66, 0xffccff33, 0xffccff00, 0xffccccff, 0xffcccccc, 0xffcccc99, 0xffcccc66, 0xffcccc33, 0xffcccc00,
0xffcc99ff, 0xffcc99cc, 0xffcc9999, 0xffcc9966, 0xffcc9933, 0xffcc9900, 0xffcc66ff, 0xffcc66cc, 0xffcc6699, 0xffcc6666, 0xffcc6633, 0xffcc6600, 0xffcc33ff, 0xffcc33cc, 0xffcc3399, 0xffcc3366,
0xffcc3333, 0xffcc3300, 0xffcc00ff, 0xffcc00cc, 0xffcc0099, 0xffcc0066, 0xffcc0033, 0xffcc0000, 0xff99ffff, 0xff99ffcc, 0xff99ff99, 0xff99ff66, 0xff99ff33, 0xff99ff00, 0xff99ccff, 0xff99cccc,
0xff99cc99, 0xff99cc66, 0xff99cc33, 0xff99cc00, 0xff9999ff, 0xff9999cc, 0xff999999, 0xff999966, 0xff999933, 0xff999900, 0xff9966ff, 0xff9966cc, 0xff996699, 0xff996666, 0xff996633, 0xff996600,
0xff9933ff, 0xff9933cc, 0xff993399, 0xff993366, 0xff993333, 0xff993300, 0xff9900ff, 0xff9900cc, 0xff990099, 0xff990066, 0xff990033, 0xff990000, 0xff66ffff, 0xff66ffcc, 0xff66ff99, 0xff66ff66,
0xff66ff33, 0xff66ff00, 0xff66ccff, 0xff66cccc, 0xff66cc99, 0xff66cc66, 0xff66cc33, 0xff66cc00, 0xff6699ff, 0xff6699cc, 0xff669999, 0xff669966, 0xff669933, 0xff669900, 0xff6666ff, 0xff6666cc,
0xff666699, 0xff666666, 0xff666633, 0xff666600, 0xff6633ff, 0xff6633cc, 0xff663399, 0xff663366, 0xff663333, 0xff663300, 0xff6600ff, 0xff6600cc, 0xff660099, 0xff660066, 0xff660033, 0xff660000,
0xff33ffff, 0xff33ffcc, 0xff33ff99, 0xff33ff66, 0xff33ff33, 0xff33ff00, 0xff33ccff, 0xff33cccc, 0xff33cc99, 0xff33cc66, 0xff33cc33, 0xff33cc00, 0xff3399ff, 0xff3399cc, 0xff339999, 0xff339966,
0xff339933, 0xff339900, 0xff3366ff, 0xff3366cc, 0xff336699, 0xff336666, 0xff336633, 0xff336600, 0xff3333ff, 0xff3333cc, 0xff333399, 0xff333366, 0xff333333, 0xff333300, 0xff3300ff, 0xff3300cc,
0xff330099, 0xff330066, 0xff330033, 0xff330000, 0xff00ffff, 0xff00ffcc, 0xff00ff99, 0xff00ff66, 0xff00ff33, 0xff00ff00, 0xff00ccff, 0xff00cccc, 0xff00cc99, 0xff00cc66, 0xff00cc33, 0xff00cc00,
0xff0099ff, 0xff0099cc, 0xff009999, 0xff009966, 0xff009933, 0xff009900, 0xff0066ff, 0xff0066cc, 0xff006699, 0xff006666, 0xff006633, 0xff006600, 0xff0033ff, 0xff0033cc, 0xff003399, 0xff003366,
0xff003333, 0xff003300, 0xff0000ff, 0xff0000cc, 0xff000099, 0xff000066, 0xff000033, 0xffee0000, 0xffdd0000, 0xffbb0000, 0xffaa0000, 0xff880000, 0xff770000, 0xff550000, 0xff440000, 0xff220000,
0xff110000, 0xff00ee00, 0xff00dd00, 0xff00bb00, 0xff00aa00, 0xff008800, 0xff007700, 0xff005500, 0xff004400, 0xff002200, 0xff001100, 0xff0000ee, 0xff0000dd, 0xff0000bb, 0xff0000aa, 0xff000088,
0xff000077, 0xff000055, 0xff000044, 0xff000022, 0xff000011, 0xffeeeeee, 0xffdddddd, 0xffbbbbbb, 0xffaaaaaa, 0xff888888, 0xff777777, 0xff555555, 0xff444444, 0xff222222, 0xff111111, 0xff000000
};

/**
Expand Down Expand Up @@ -73,6 +73,7 @@ bool FVox::Import(FArchive& Ar, const UVoxImportOption* ImportOption)
uint32 SizeOfChunkContents;
uint32 TotalSizeOfChildrenChunks;

Materials.Init(FVoxMaterial(), 256);
do {
Ar.Serialize(ChunkId, 4);
Ar << SizeOfChunkContents;
Expand Down Expand Up @@ -117,11 +118,61 @@ bool FVox::Import(FArchive& Ar, const UVoxImportOption* ImportOption)
UE_LOG(LogVox, Verbose, TEXT(" %s"), *Color.ToString());
Palette.Add(Color);
}
} else if (0 == FCStringAnsi::Strncmp("MATT", ChunkId, 4)) {
UE_LOG(LogVox, Warning, TEXT("Unsupported MATT chunk."));
uint8 byte;
for (uint32 i = 0; i < SizeOfChunkContents; ++i) {
Ar << byte;
} else if (0 == FCStringAnsi::Strncmp("MATL", ChunkId, 4)) {
UE_LOG(LogVox, Verbose, TEXT("MATL:"));

int32 MaterialId;
Ar << MaterialId;

FVoxMaterial& Material = Materials[MaterialId - 1];

int32 DictNumPairs;
Ar << DictNumPairs;

UE_LOG(LogVox, Display, TEXT("Material[%i]:"), MaterialId);
for (int i = 0; i < DictNumPairs; i++)
{
uint32 KeyStringSize;
Ar << KeyStringSize;
ANSICHAR Key[256] = { 0, };
Ar.Serialize(Key, KeyStringSize);

uint32 ValueStringSize;
Ar << ValueStringSize;
ANSICHAR Value[256] = { 0, };
Ar.Serialize(Value, ValueStringSize);

if (0 == FCStringAnsi::Strcmp("_type", Key)) {
if (0 == FCStringAnsi::Strcmp("_diffuse", Value)) {
Material.Type = EVoxMaterialType::DIFFUSE;
} else if (0 == FCStringAnsi::Strcmp("_metal", Value)) {
Material.Type = EVoxMaterialType::METAL;
} else if (0 == FCStringAnsi::Strcmp("_glass", Value)) {
Material.Type = EVoxMaterialType::GLASS;
} else if (0 == FCStringAnsi::Strcmp("_emit", Value)) {
Material.Type = EVoxMaterialType::EMIT;
}
} else if (0 == FCStringAnsi::Strcmp("_metal", Key)) {
Material.Metallic = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_rough", Key)) {
Material.Roughness = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_flux", Key)) {
Material.Emissive = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_spec", Key)) {
Material.Specular = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_weight", Key)) {
Material.Weight = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_alpha", Key)) {
Material.Alpha = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_ri", Key)) {
Material.IOR = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_att", Key)) {
Material.Att = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_trans", Key)) {
Material.Transparency = static_cast<float>(atof(Value));
} else if (0 == FCStringAnsi::Strcmp("_g", Key)) {
Material.Phase = static_cast<float>(atof(Value));
}
}
} else {
FString UnknownChunk(ChunkId);
Expand Down Expand Up @@ -165,12 +216,12 @@ bool FVox::Import(FArchive& Ar, const UVoxImportOption* ImportOption)
* +---x (left)
*/
static const FIntVector Vectors[6] = {
FIntVector( 0, 0, 1), // Up
FIntVector( 0, 0,-1), // Down
FIntVector( 1, 0, 0), // Forward
FIntVector(0, 0, 1), // Up
FIntVector(0, 0,-1), // Down
FIntVector(1, 0, 0), // Forward
FIntVector(-1, 0, 0), // Backward
FIntVector( 0, 1, 0), // Right
FIntVector( 0,-1, 0) // Left
FIntVector(0, 1, 0), // Right
FIntVector(0,-1, 0) // Left
};

/**
Expand Down
3 changes: 3 additions & 0 deletions Source/VOX4UEditor/Private/Vox.h
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@

#include "CoreMinimal.h"
#include <RawMesh.h>
#include "VoxMaterial.h"

class UTexture2D;
class UVoxImportOption;
Expand All @@ -29,6 +30,8 @@ struct FVox
TMap<FIntVector, uint8> Voxel;
/** Palette */
TArray<FColor> Palette;
/** Materials */
TArray<FVoxMaterial> Materials;

public:

Expand Down
1 change: 1 addition & 0 deletions Source/VOX4UEditor/Private/VoxMaterial.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
#include "VoxMaterial.h"
26 changes: 26 additions & 0 deletions Source/VOX4UEditor/Private/VoxMaterial.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
#pragma once

#include "CoreMinimal.h"

enum class EVoxMaterialType : uint8
{
DIFFUSE = 0, // _diffuse
METAL, // _metal
GLASS, // _glass
EMIT // _emit
};

struct FVoxMaterial
{
EVoxMaterialType Type = EVoxMaterialType::DIFFUSE; // _type
float Metallic; // _metal
float Roughness; // _rough
float Emissive; // _flux
float Specular; // _spec
float Weight; // _weight
float Alpha; // _alpha
float IOR; // _ri (_ior = _ri - 1.0)
float Att; // _att
float Transparency; // _trans
float Phase; // _g
};

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