Fixed dynamic vertex buffer allocation failure.

src/bgfx_p.h

@@ -2703,8 +2703,12 @@ namespace bgfx
 
 			if (!isValid(declHandle) )
 			{
-				VertexDeclHandle temp = { m_vertexDeclHandle.alloc() };
-				declHandle = temp;
+				declHandle.idx = m_vertexDeclHandle.alloc();
+				if (!isValid(declHandle) )
+				{
+					return declHandle;
+				}
+
 				CommandBuffer& cmdbuf = getCommandBuffer(CommandBuffer::CreateVertexDecl);
 				cmdbuf.write(declHandle);
 				cmdbuf.write(_decl);
@@ -2717,10 +2721,16 @@ namespace bgfx
 		{
 			VertexBufferHandle handle = { m_vertexBufferHandle.alloc() };
 
-			BX_WARN(isValid(handle), "Failed to allocate vertex buffer handle.");
 			if (isValid(handle) )
 			{
 				VertexDeclHandle declHandle = findVertexDecl(_decl);
+				if (!isValid(declHandle) )
+				{
+					BX_TRACE("WARNING: Failed to allocate vertex decl handle (BGFX_CONFIG_MAX_VERTEX_DECLS, max: %d).", BGFX_CONFIG_MAX_VERTEX_DECLS);
+					m_vertexBufferHandle.free(handle.idx);
+					return BGFX_INVALID_HANDLE;
+				}
+
 				m_declRef.add(handle, declHandle, _decl.m_hash);
 
 				m_vertexBuffers[handle.idx].m_stride = _decl.m_stride;
@@ -2730,13 +2740,14 @@ namespace bgfx
 				cmdbuf.write(_mem);
 				cmdbuf.write(declHandle);
 				cmdbuf.write(_flags);
-			}
-			else
-			{
-				release(_mem);
+
+				return handle;
 			}
 
-			return handle;
+			BX_TRACE("WARNING: Failed to allocate vertex buffer handle (BGFX_CONFIG_MAX_VERTEX_BUFFERS, max: %d).", BGFX_CONFIG_MAX_VERTEX_BUFFERS);
+			release(_mem);
+
+			return BGFX_INVALID_HANDLE;
 		}
 
 		BGFX_API_FUNC(void destroyVertexBuffer(VertexBufferHandle _handle) )
@@ -2960,6 +2971,7 @@ namespace bgfx
 				VertexBufferHandle vertexBufferHandle = { m_vertexBufferHandle.alloc() };
 				if (!isValid(vertexBufferHandle) )
 				{
+					BX_TRACE("WARNING: Failed to allocate vertex buffer handle (BGFX_CONFIG_MAX_VERTEX_BUFFERS, max: %d).", BGFX_CONFIG_MAX_VERTEX_BUFFERS);
 					return handle;
 				}
 
@@ -2980,8 +2992,19 @@ namespace bgfx
 			}
 
 			VertexDeclHandle declHandle = findVertexDecl(_decl);
+			if (!isValid(declHandle) )
+			{
+				BX_TRACE("WARNING: Failed to allocate vertex decl handle (BGFX_CONFIG_MAX_VERTEX_DECLS, max: %d).", BGFX_CONFIG_MAX_VERTEX_DECLS);
+				return handle;
+			}
 
 			handle.idx = m_dynamicVertexBufferHandle.alloc();
+			if (!isValid(handle) )
+			{
+				BX_TRACE("WARNING: Failed to allocate dynamic vertex buffer handle (BGFX_CONFIG_MAX_DYNAMIC_VERTEX_BUFFERS, max: %d).", BGFX_CONFIG_MAX_DYNAMIC_VERTEX_BUFFERS);
+				return handle;
+			}
+
 			DynamicVertexBuffer& dvb = m_dynamicVertexBuffers[handle.idx];
 			dvb.m_handle.idx  = uint16_t(ptr>>32);
 			dvb.m_offset      = uint32_t(ptr);