diff options
Diffstat (limited to 'Samples/CommonSrc/Render/Render_LoadTextureDDS.cpp')
| -rw-r--r-- | Samples/CommonSrc/Render/Render_LoadTextureDDS.cpp | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/Samples/CommonSrc/Render/Render_LoadTextureDDS.cpp b/Samples/CommonSrc/Render/Render_LoadTextureDDS.cpp new file mode 100644 index 0000000..e11b07f --- /dev/null +++ b/Samples/CommonSrc/Render/Render_LoadTextureDDS.cpp @@ -0,0 +1,121 @@ +/************************************************************************************
+
+Filename : WavPlayer_OSX.h
+Content : A DDS file loader for cross-platform compressed texture support.
+Created : March 5, 2013
+Authors : Peter Hoff, Dan Goodman, Bryan Croteau
+
+Copyright : Copyright 2013 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+#include "Render_Device.h"
+
+#ifdef OVR_DEFINE_NEW
+#undef new
+#endif
+
+namespace OVR { namespace Render {
+
+static const UPInt OVR_DDS_PF_FOURCC = 0x4;
+static const UInt32 OVR_DTX1_MAGIC_NUMBER = 827611204;
+static const UInt32 OVR_DTX5_MAGIC_NUMBER = 894720068;
+
+struct OVR_DDS_PIXELFORMAT
+{
+ UInt32 Size;
+ UInt32 Flags;
+ UInt32 FourCC;
+ UInt32 RGBBitCount;
+ UInt32 RBitMask;
+ UInt32 GBitMask;
+ UInt32 BBitMask;
+ UInt32 ABitMask;
+};
+
+struct OVR_DDS_HEADER
+{
+ UInt32 Size;
+ UInt32 Flags;
+ UInt32 Height;
+ UInt32 Width;
+ UInt32 PitchOrLinearSize;
+ UInt32 Depth;
+ UInt32 MipMapCount;
+ UInt32 Reserved1[11];
+ OVR_DDS_PIXELFORMAT PixelFormat;
+ UInt32 Caps;
+ UInt32 Caps2;
+ UInt32 Caps3;
+ UInt32 Caps4;
+ UInt32 Reserved2;
+};
+
+Texture* LoadTextureDDS(RenderDevice* ren, File* f)
+{
+ OVR_DDS_HEADER header;
+ unsigned char filecode[4];
+
+ f->Read(filecode, 4);
+ if (strncmp((const char*)filecode, "DDS ", 4) != 0)
+ {
+ return NULL;
+ }
+
+ f->Read((unsigned char*)(&header), sizeof(header));
+
+ int width = header.Width;
+ int height = header.Height;
+
+ int format = 0;
+
+ UInt32 mipCount = header.MipMapCount;
+ if(mipCount <= 0)
+ {
+ mipCount = 1;
+ }
+ if(header.PixelFormat.Flags & OVR_DDS_PF_FOURCC)
+ {
+ if(header.PixelFormat.FourCC == OVR_DTX1_MAGIC_NUMBER)
+ {
+ format = Texture_DXT1;
+ }
+ else if(header.PixelFormat.FourCC == OVR_DTX5_MAGIC_NUMBER)
+ {
+ format = Texture_DXT5;
+ }
+ else
+ {
+ return NULL;
+ }
+ }
+
+ int byteLen = f->BytesAvailable();
+ unsigned char* bytes = new unsigned char[byteLen];
+ f->Read(bytes, byteLen);
+ Texture* out = ren->CreateTexture(format, (int)width, (int)height, bytes, mipCount);
+ if(strstr(f->GetFilePath(), "_c."))
+ {
+ out->SetSampleMode(Sample_Clamp);
+ }
+ OVR_FREE(bytes);
+ return out;
+}
+
+
+}}
+
+#ifdef OVR_DEFINE_NEW
+#define new OVR_DEFINE_NEW
+#endif
\ No newline at end of file |