int TextureViewParser::GetDefaultView( lua_State *L )
{
INIT_LUA_STACK_TRACKING( L );
// Texture should be the first argument
auto *pTexture = *GetUserData<ITexture**>( L, 1, m_TextureLibMetatableName.c_str() );
// View type should be the second argument
TEXTURE_VIEW_TYPE ViewType;
m_ViewTypeParser.SetValue( L, 2, &ViewType );
auto pView = pTexture->GetDefaultView( ViewType );
if( !pView )
SCRIPT_PARSING_ERROR( L, "Failed to get default texture view of type ", GetTexViewTypeLiteralName( ViewType ) );
// Push existing object
PushObject(L, pView);
CHECK_LUA_STACK_HEIGHT( +1 );
// Returning one value to Lua
return 1;
}
void TextureBaseGL::CreateViewInternal( const struct TextureViewDesc &OrigViewDesc, class ITextureView **ppView, bool bIsDefaultView )
{
VERIFY( ppView != nullptr, "Null pointer provided" );
if( !ppView )return;
VERIFY( *ppView == nullptr, "Overwriting reference to existing object may cause memory leaks" );
*ppView = nullptr;
try
{
auto ViewDesc = OrigViewDesc;
CorrectTextureViewDesc(ViewDesc);
auto *pDeviceGLImpl = ValidatedCast<RenderDeviceGLImpl>(GetDevice());
auto &TexViewAllocator = pDeviceGLImpl->GetTexViewObjAllocator();
VERIFY( &TexViewAllocator == &m_dbgTexViewObjAllocator, "Texture view allocator does not match allocator provided during texture initialization" );
// http://www.opengl.org/wiki/Texture_Storage#Texture_views
GLenum GLViewFormat = TexFormatToGLInternalTexFormat( ViewDesc.Format, m_Desc.BindFlags );
VERIFY( GLViewFormat != 0, "Unsupported texture format" );
TextureViewGLImpl *pViewOGL = nullptr;
if( ViewDesc.ViewType == TEXTURE_VIEW_SHADER_RESOURCE )
{
bool bIsFullTextureView =
ViewDesc.TextureDim == m_Desc.Type &&
ViewDesc.Format == GetDefaultTextureViewFormat( m_Desc.Format, ViewDesc.ViewType, m_Desc.BindFlags ) &&
ViewDesc.MostDetailedMip == 0 &&
ViewDesc.NumMipLevels == m_Desc.MipLevels &&
ViewDesc.FirstArraySlice == 0 &&
ViewDesc.NumArraySlices == m_Desc.ArraySize;
pViewOGL = NEW_RC_OBJ(TexViewAllocator, "TextureViewGLImpl instance", TextureViewGLImpl, bIsDefaultView ? this : nullptr)(
pDeviceGLImpl, ViewDesc, this,
!bIsFullTextureView, // Create OpenGL texture view object if view
// does not address the whole texture
bIsDefaultView
);
if( !bIsFullTextureView )
{
GLenum GLViewTarget = 0;
switch(ViewDesc.TextureDim)
{
case RESOURCE_DIM_TEX_1D:
GLViewTarget = GL_TEXTURE_1D;
ViewDesc.NumArraySlices = 1;
break;
case RESOURCE_DIM_TEX_1D_ARRAY:
GLViewTarget = GL_TEXTURE_1D_ARRAY;
break;
case RESOURCE_DIM_TEX_2D:
GLViewTarget = m_Desc.SampleCount > 1 ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D;
ViewDesc.NumArraySlices = 1;
break;
case RESOURCE_DIM_TEX_2D_ARRAY:
GLViewTarget = m_Desc.SampleCount > 1 ? GL_TEXTURE_2D_MULTISAMPLE_ARRAY : GL_TEXTURE_2D_ARRAY;
break;
case RESOURCE_DIM_TEX_3D:
GLViewTarget = GL_TEXTURE_3D;
break;
case RESOURCE_DIM_TEX_CUBE:
GLViewTarget = GL_TEXTURE_CUBE_MAP;
break;
case RESOURCE_DIM_TEX_CUBE_ARRAY:
GLViewTarget = GL_TEXTURE_CUBE_MAP_ARRAY;
break;
default: UNEXPECTED("Unsupported texture view type");
}
glTextureView( pViewOGL->GetHandle(), GLViewTarget, m_GlTexture, GLViewFormat, ViewDesc.MostDetailedMip, ViewDesc.NumMipLevels, ViewDesc.FirstArraySlice, ViewDesc.NumArraySlices );
CHECK_GL_ERROR_AND_THROW( "Failed to create texture view" );
pViewOGL->SetBindTarget(GLViewTarget);
}
}
else if( ViewDesc.ViewType == TEXTURE_VIEW_UNORDERED_ACCESS )
{
VERIFY( ViewDesc.NumArraySlices == 1 || ViewDesc.NumArraySlices == m_Desc.ArraySize,
"Only single array/depth slice or the whole texture can be bound as UAV in OpenGL");
VERIFY( ViewDesc.AccessFlags != 0, "At least one access flag must be specified" );
pViewOGL = NEW_RC_OBJ(TexViewAllocator, "TextureViewGLImpl instance", TextureViewGLImpl, bIsDefaultView ? this : nullptr)(
pDeviceGLImpl, ViewDesc, this,
false, // Do NOT create texture view OpenGL object
bIsDefaultView
);
}
else if( ViewDesc.ViewType == TEXTURE_VIEW_RENDER_TARGET )
{
VERIFY( ViewDesc.NumMipLevels == 1, "Only single mip level can be bound as RTV" );
pViewOGL = NEW_RC_OBJ(TexViewAllocator, "TextureViewGLImpl instance", TextureViewGLImpl, bIsDefaultView ? this : nullptr)(
pDeviceGLImpl, ViewDesc, this,
false, // Do NOT create texture view OpenGL object
bIsDefaultView
);
}
else if( ViewDesc.ViewType == TEXTURE_VIEW_DEPTH_STENCIL )
{
VERIFY( ViewDesc.NumMipLevels == 1, "Only single mip level can be bound as DSV" );
pViewOGL = NEW_RC_OBJ(TexViewAllocator, "TextureViewGLImpl instance", TextureViewGLImpl, bIsDefaultView ? this : nullptr)(
pDeviceGLImpl, ViewDesc, this,
false, // Do NOT create texture view OpenGL object
bIsDefaultView
);
}
if( bIsDefaultView )
*ppView = pViewOGL;
else
{
if( pViewOGL )
{
pViewOGL->QueryInterface( IID_TextureView, reinterpret_cast<IObject**>(ppView) );
}
}
}
catch( const std::runtime_error& )
{
const auto *ViewTypeName = GetTexViewTypeLiteralName(OrigViewDesc.ViewType);
LOG_ERROR("Failed to create view \"", OrigViewDesc.Name ? OrigViewDesc.Name : "", "\" (", ViewTypeName, ") for texture \"", m_Desc.Name ? m_Desc.Name : "", "\"" )
}
}
