Repo created

libs/drape/attribute_provider.cpp

@@ -0,0 +1,107 @@
+#include "drape/attribute_provider.hpp"
+
+#include "base/assert.hpp"
+#include "base/stl_helpers.hpp"
+
+#ifdef DEBUG
+#define INIT_CHECK_INFO(x) m_checkInfo = std::vector<bool>((std::vector<bool>::size_type)(x), false);
+#define CHECK_STREAMS      CheckStreams()
+#define INIT_STREAM(x)     InitCheckStream((x))
+#else
+#include "base/macros.hpp"
+#define INIT_CHECK_INFO(x) UNUSED_VALUE((x))
+#define CHECK_STREAMS
+#define INIT_STREAM(x) UNUSED_VALUE((x))
+#endif
+
+namespace dp
+{
+AttributeProvider::AttributeProvider(uint8_t streamCount, uint32_t vertexCount) : m_vertexCount(vertexCount)
+{
+  m_streams.resize(streamCount);
+  INIT_CHECK_INFO(streamCount);
+}
+
+bool AttributeProvider::IsDataExists() const
+{
+  CHECK_STREAMS;
+  return m_vertexCount > 0;
+}
+
+uint32_t AttributeProvider::GetVertexCount() const
+{
+  return m_vertexCount;
+}
+
+uint8_t AttributeProvider::GetStreamCount() const
+{
+  return m_streams.size();
+}
+
+void const * AttributeProvider::GetRawPointer(uint8_t streamIndex)
+{
+  ASSERT_LESS(streamIndex, GetStreamCount(), ());
+  CHECK_STREAMS;
+  return m_streams[streamIndex].m_data.get();
+}
+
+BindingInfo const & AttributeProvider::GetBindingInfo(uint8_t streamIndex) const
+{
+  ASSERT_LESS(streamIndex, GetStreamCount(), ());
+  CHECK_STREAMS;
+  return m_streams[streamIndex].m_binding;
+}
+
+void AttributeProvider::Advance(uint32_t vertexCount)
+{
+  ASSERT_LESS_OR_EQUAL(vertexCount, m_vertexCount, ());
+  CHECK_STREAMS;
+
+  if (m_vertexCount != vertexCount)
+  {
+    for (size_t i = 0; i < GetStreamCount(); ++i)
+    {
+      BindingInfo const & info = m_streams[i].m_binding;
+      uint32_t offset = vertexCount * info.GetElementSize();
+      void * rawPointer = m_streams[i].m_data.get();
+      m_streams[i].m_data = make_ref((void *)(((uint8_t *)rawPointer) + offset));
+    }
+  }
+
+  m_vertexCount -= vertexCount;
+}
+
+void AttributeProvider::InitStream(uint8_t streamIndex, BindingInfo const & bindingInfo, ref_ptr<void> data)
+{
+  ASSERT_LESS(streamIndex, GetStreamCount(), ());
+  AttributeStream s;
+  s.m_binding = bindingInfo;
+  s.m_data = data;
+  m_streams[streamIndex] = s;
+  INIT_STREAM(streamIndex);
+}
+
+void AttributeProvider::Reset(uint32_t vertexCount)
+{
+  m_vertexCount = vertexCount;
+}
+
+void AttributeProvider::UpdateStream(uint8_t streamIndex, ref_ptr<void> data)
+{
+  ASSERT_LESS(streamIndex, GetStreamCount(), ());
+  m_streams[streamIndex].m_data = data;
+  INIT_STREAM(streamIndex);
+}
+
+#ifdef DEBUG
+void AttributeProvider::CheckStreams() const
+{
+  ASSERT(!base::IsExist(m_checkInfo, false), ("Not all streams initialized"));
+}
+
+void AttributeProvider::InitCheckStream(uint8_t streamIndex)
+{
+  m_checkInfo[streamIndex] = true;
+}
+#endif
+}  // namespace dp