allow loading DXT2 and DXT4 dds files

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10614 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_textures.c b/gl_textures.c
index 192568fac7ed340ab2a3c8eaa5ad02536057052b..98fc44d69f7a55ba858f61f96d20ffe57f283e2f 100644 (file)
--- a/gl_textures.c
+++ b/gl_textures.c
@@ -1873,7 +1873,7 @@ rtexture_t *R_LoadTextureDDSFile(rtexturepool_t *rtexturepool, const char *filen
                        }
                }
        }
-       else if (!memcmp(dds+84, "DXT3", 4))
+       else if (!memcmp(dds+84, "DXT3", 4) || !memcmp(dds+84, "DXT2", 4))
        {
                if(!vid.support.ext_texture_compression_s3tc)
                {
@@ -1892,7 +1892,7 @@ rtexture_t *R_LoadTextureDDSFile(rtexturepool_t *rtexturepool, const char *filen
                }
                // we currently always assume alpha
        }
-       else if (!memcmp(dds+84, "DXT5", 4))
+       else if (!memcmp(dds+84, "DXT5", 4) || !memcmp(dds+84, "DXT4", 4))
        {
                if(!vid.support.ext_texture_compression_s3tc)
                {
@@ -2045,8 +2045,8 @@ rtexture_t *R_LoadTextureDDSFile(rtexturepool_t *rtexturepool, const char *filen
                        {
                        case TEXTYPE_BGRA: d3dformat = (flags & TEXF_ALPHA) ? D3DFMT_A8R8G8B8 : D3DFMT_X8R8G8B8;break;
                        case TEXTYPE_DXT1: case TEXTYPE_DXT1A: d3dformat = D3DFMT_DXT1;break;
-                       case TEXTYPE_DXT3: d3dformat = D3DFMT_DXT3;break;
-                       case TEXTYPE_DXT5: d3dformat = D3DFMT_DXT5;break;
+                       case TEXTYPE_DXT2: case TEXTYPE_DXT3: d3dformat = D3DFMT_DXT3;break;
+                       case TEXTYPE_DXT4: case TEXTYPE_DXT5: d3dformat = D3DFMT_DXT5;break;
                        default: d3dformat = D3DFMT_A8R8G8B8;Host_Error("R_LoadTextureDDSFile: unsupported texture type %i when picking D3DFMT", (int)textype);break;
                        }
                        d3dusage = 0;