From 0210479fd322fbb3982f9c52b9806b1ee513a5d0 Mon Sep 17 00:00:00 2001
From: Joshua Goins <josh@redstrate.com>
Date: Thu, 11 Aug 2022 09:23:15 -0400
Subject: [PATCH] Parse texture attribute and formats

---
 Cargo.lock |  1 +
 Cargo.toml |  5 +++-
 src/tex.rs | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
 3 files changed, 86 insertions(+), 3 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 7f47118..80a0925 100755
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -441,6 +441,7 @@ version = "0.1.0"
 dependencies = [
  "binrw",
  "bitfield-struct",
+ "bitflags",
  "crc",
  "criterion",
  "glam",
diff --git a/Cargo.toml b/Cargo.toml
index d6dfa3e..6f2b6d1 100755
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,4 +49,7 @@ serde = { version = "1.0", features = ["derive"] }
 sha1_smol = "1.0.0"
 
 # needed for deconstructing skeleton pose matrices
-glam = "0.21.3"
\ No newline at end of file
+glam = "0.21.3"
+
+# needed for c-style bitflags used in some formats (such as tex files)
+bitflags = "1.3"
\ No newline at end of file
diff --git a/src/tex.rs b/src/tex.rs
index 52d3da7..0e14230 100644
--- a/src/tex.rs
+++ b/src/tex.rs
@@ -2,12 +2,91 @@ use std::io::Cursor;
 use binrw::binread;
 use crate::gamedata::MemoryBuffer;
 use binrw::BinRead;
+use bitflags::bitflags;
+
+// Attributes and Format are adapted from Lumina (https://github.com/NotAdam/Lumina/blob/master/src/Lumina/Data/Files/TexFile.cs)
+bitflags! {
+    #[binread]
+    struct TextureAttribute : u32 {
+        const DiscardPerFrame = 0x1;
+        const DiscardPerMap = 0x2;
+
+        const Managed = 0x4;
+        const UserManaged = 0x8;
+        const CpuRead = 0x10;
+        const LocationMain = 0x20;
+        const NoGpuRead = 0x40;
+        const AlignedSize = 0x80;
+        const EdgeCulling = 0x100;
+        const LocationOnion = 0x200;
+        const ReadWrite = 0x400;
+        const Immutable = 0x800;
+
+        const TextureRenderTarget = 0x100000;
+        const TextureDepthStencil = 0x200000;
+        const TextureType1D = 0x400000;
+        const TextureType2D = 0x800000;
+        const TextureType3D = 0x1000000;
+        const TextureTypeCube = 0x2000000;
+        const TextureTypeMask = 0x3C00000;
+        const TextureSwizzle = 0x4000000;
+        const TextureNoTiled = 0x8000000;
+        const TextureNoSwizzle = 0x80000000;
+    }
+}
+
+bitflags! {
+    #[binread]
+    struct TextureFormat : u32 {
+        const TypeShift = 0xC;
+        const TypeMask = 0xF000;
+        const ComponentShift = 0x8;
+        const ComponentMask = 0xF00;
+        const BppShift = 0x4;
+        const BppMask = 0xF0;
+        const EnumShift = 0x0;
+        const EnumMask = 0xF;
+        const TypeInteger = 0x1;
+        const TypeFloat = 0x2;
+        const TypeDxt = 0x3;
+        const TypeBc123 = 0x3;
+        const TypeDepthStencil = 0x4;
+        const TypeSpecial = 0x5;
+        const TypeBc57 = 0x6;
+
+        const L8 = 0x1130;
+        const A8 = 0x1131;
+        const B4G4R4A4 = 0x1440;
+        const B5G5R5A1 = 0x1441;
+        const B8G8R8A8 = 0x1450;
+        const B8G8R8X8 = 0x1451;
+
+        const R32F = 0x2150;
+        const R16G16F = 0x2250;
+        const R32G32F = 0x2260;
+        const R16G16B16A16F = 0x2460;
+        const R32G32B32A32F = 0x2470;
+
+        const BC1 = 0x3420;
+        const BC2 = 0x3430;
+        const BC3 = 0x3431;
+        const BC5 = 0x6230;
+        const BC7 = 0x6432;
+
+        const D16 = 0x4140;
+        const D24S8 = 0x4250;
+
+        const Null = 0x5100;
+        const Shadow16 = 0x5140;
+        const Shadow24 = 0x5150;
+    }
+}
 
 #[binread]
 #[derive(Debug)]
 struct TexHeader {
-    attribute : u32,
-    format: u32,
+    attribute : TextureAttribute,
+    format: TextureFormat,
 
     width : u16,
     height : u16,