1 files changed, 7 insertions, 2 deletions
diff --git a/src/mbgl/gl/context.cpp b/src/mbgl/gl/context.cpp
index 1b4d6fbcb7..3508b92a79 100644
--- a/src/mbgl/gl/context.cpp
+++ b/src/mbgl/gl/context.cpp
@@ -164,15 +164,20 @@ void Context::verifyProgramLinkage(ProgramID program_) {
     throw std::runtime_error("program failed to link");
 }
 
-UniqueBuffer Context::createVertexBuffer(const void* data, std::size_t size) {
+UniqueBuffer Context::createVertexBuffer(const void* data, std::size_t size, const BufferUsageType usage) {
     BufferID id = 0;
     MBGL_CHECK_ERROR(glGenBuffers(1, &id));
     UniqueBuffer result { std::move(id), { this } };
     vertexBuffer = result;
-    MBGL_CHECK_ERROR(glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW));
+    MBGL_CHECK_ERROR(glBufferData(GL_ARRAY_BUFFER, size, data, static_cast<GLenum>(usage)));
     return result;
 }
 
+void Context::updateVertexBuffer(UniqueBuffer& buffer, const void* data, std::size_t size) {
+    vertexBuffer = buffer;
+    MBGL_CHECK_ERROR(glBufferSubData(GL_ARRAY_BUFFER, 0, size, data));
+}
+
 UniqueBuffer Context::createIndexBuffer(const void* data, std::size_t size) {
     BufferID id = 0;
     MBGL_CHECK_ERROR(glGenBuffers(1, &id));