Method innerCreateTexture

Engine/source/gfx/gl/gfxGLTextureManager.cpp:85–225

----------------------------------------------------------------------------- innerCreateTexture ----------------------------------------------------------------------------- This just creates the texture, no info is actually loaded to it. We do that later.

//-----------------------------------------------------------------------------
// This just creates the texture, no info is actually loaded to it.  We do that later.
void GFXGLTextureManager::innerCreateTexture( GFXGLTextureObject *retTex, 
                                               U32 height, 
                                               U32 width, 
                                               U32 depth,
                                               GFXFormat format, 
                                               GFXTextureProfile *profile, 
                                               U32 numMipLevels,
                                               bool forceMips)
{
   // No 24 bit formats.  They trigger various oddities because hardware (and Apple's drivers apparently...) don't natively support them.
   if (format == GFXFormatR8G8B8)
      format = GFXFormatR8G8B8A8;
   else if (format == GFXFormatR8G8B8_SRGB)
      format = GFXFormatR8G8B8A8_SRGB;
      
   retTex->mFormat = format;
   retTex->mIsZombie = false;
   retTex->mIsNPoT2 = false;
   
   GLenum binding = ( (height == 1 || width == 1) && ( height != width ) ) ? GL_TEXTURE_1D : ( (depth == 0) ? GL_TEXTURE_2D : GL_TEXTURE_3D );
   if((profile->testFlag(GFXTextureProfile::RenderTarget) || profile->testFlag(GFXTextureProfile::ZTarget)) && (!isPow2(width) || !isPow2(height)) && !depth)
      retTex->mIsNPoT2 = true;
   retTex->mBinding = binding;
   
   // Bind it
   PRESERVE_TEXTURE(binding);
   glBindTexture(retTex->getBinding(), retTex->getHandle());
   
   // Create it
   // @todo OPENGL - Creating mipmaps for compressed formats. Not supported on OpenGL ES and bugged on AMD. We use mipmaps present on file.
   if( forceMips && !retTex->mIsNPoT2 && !ImageUtil::isCompressedFormat(format) )
   {
      retTex->mMipLevels = numMipLevels > 1 ? numMipLevels : 0;
   }
   else if(profile->testFlag(GFXTextureProfile::NoMipmap) || profile->testFlag(GFXTextureProfile::RenderTarget) || numMipLevels == 1 || retTex->mIsNPoT2)
   {
      retTex->mMipLevels = 1;
   }
   else
   {
      retTex->mMipLevels = numMipLevels;
   }

   // @todo OPENGL - OpenGL ES2 not support mipmaps on NPOT textures
#if 0
   if(!retTex->mIsNPoT2)
   {
      if(!isPow2(width))
         width = getNextPow2(width);
      if(!isPow2(height))
         height = getNextPow2(height);
      if(depth && !isPow2(depth))
         depth = getNextPow2(depth);
   }
#endif
   
   AssertFatal(GFXGLTextureInternalFormat[format] != GL_ZERO, "GFXGLTextureManager::innerCreateTexture - invalid internal format");
   AssertFatal(GFXGLTextureFormat[format] != GL_ZERO, "GFXGLTextureManager::innerCreateTexture - invalid format");