DDSLoader: Fix (#24124)

FourCC code is missing iff the file contains uncompressed texture and the DDSLoader seems to support uncompressed textures.

examples/jsm/loaders/DDSLoader.js

@@ -27,18 +27,18 @@ class DDSLoader extends CompressedTextureLoader {
 
 		const DDS_MAGIC = 0x20534444;
 
-		// let DDSD_CAPS = 0x1;
-		// let DDSD_HEIGHT = 0x2;
-		// let DDSD_WIDTH = 0x4;
-		// let DDSD_PITCH = 0x8;
-		// let DDSD_PIXELFORMAT = 0x1000;
+		// const DDSD_CAPS = 0x1;
+		// const DDSD_HEIGHT = 0x2;
+		// const DDSD_WIDTH = 0x4;
+		// const DDSD_PITCH = 0x8;
+		// const DDSD_PIXELFORMAT = 0x1000;
 		const DDSD_MIPMAPCOUNT = 0x20000;
-		// let DDSD_LINEARSIZE = 0x80000;
-		// let DDSD_DEPTH = 0x800000;
+		// const DDSD_LINEARSIZE = 0x80000;
+		// const DDSD_DEPTH = 0x800000;
 
-		// let DDSCAPS_COMPLEX = 0x8;
-		// let DDSCAPS_MIPMAP = 0x400000;
-		// let DDSCAPS_TEXTURE = 0x1000;
+		// const DDSCAPS_COMPLEX = 0x8;
+		// const DDSCAPS_MIPMAP = 0x400000;
+		// const DDSCAPS_TEXTURE = 0x1000;
 
 		const DDSCAPS2_CUBEMAP = 0x200;
 		const DDSCAPS2_CUBEMAP_POSITIVEX = 0x400;
@@ -47,14 +47,14 @@ class DDSLoader extends CompressedTextureLoader {
 		const DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000;
 		const DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000;
 		const DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000;
-		// let DDSCAPS2_VOLUME = 0x200000;
+		// const DDSCAPS2_VOLUME = 0x200000;
 
-		// let DDPF_ALPHAPIXELS = 0x1;
-		// let DDPF_ALPHA = 0x2;
-		const DDPF_FOURCC = 0x4;
-		// let DDPF_RGB = 0x40;
-		// let DDPF_YUV = 0x200;
-		// let DDPF_LUMINANCE = 0x20000;
+		// const DDPF_ALPHAPIXELS = 0x1;
+		// const DDPF_ALPHA = 0x2;
+		// const DDPF_FOURCC = 0x4;
+		// const DDPF_RGB = 0x40;
+		// const DDPF_YUV = 0x200;
+		// const DDPF_LUMINANCE = 0x20000;
 
 		function fourCCToInt32( value ) {
 
@@ -122,7 +122,7 @@ class DDSLoader extends CompressedTextureLoader {
 
 		const off_mipmapCount = 7;
 
-		const off_pfFlags = 20;
+		// const off_pfFlags = 20;
 		const off_pfFourCC = 21;
 		const off_RGBBitCount = 22;
 		const off_RBitMask = 23;
@@ -130,10 +130,10 @@ class DDSLoader extends CompressedTextureLoader {
 		const off_BBitMask = 25;
 		const off_ABitMask = 26;
 
-		// let off_caps = 27;
+		// const off_caps = 27;
 		const off_caps2 = 28;
-		// let off_caps3 = 29;
-		// let off_caps4 = 30;
+		// const off_caps3 = 29;
+		// const off_caps4 = 30;
 
 		// Parse header
 
@@ -146,13 +146,6 @@ class DDSLoader extends CompressedTextureLoader {
 
 		}
 
-		if ( ! header[ off_pfFlags ] & DDPF_FOURCC ) {
-
-			console.error( 'THREE.DDSLoader.parse: Unsupported format, must contain a FourCC code.' );
-			return dds;
-
-		}
-
 		let blockBytes;
 
 		const fourCC = header[ off_pfFourCC ];