From abbc00adbf264024f676dd742a06d6190774178d Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Sun, 14 Dec 2014 11:54:00 +0000
Subject: [PATCH] Work around glVertexArrayVertexAttribDivisorEXT not being
 present

---
 renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp b/renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp
index 3cb5e79fa..2f3ee64c1 100644
--- a/renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp
+++ b/renderdoc/driver/gl/wrappers/gl_buffer_funcs.cpp
@@ -2541,7 +2541,19 @@ bool WrappedOpenGL::Serialise_glVertexArrayVertexAttribDivisorEXT(GLuint vaobj,
 	{
 		vaobj = (id != ResourceId()) ? GetResourceManager()->GetLiveResource(id).name : m_FakeVAO;
 
-		m_Real.glVertexArrayVertexAttribDivisorEXT(vaobj, Index, Divisor);
+		// at the time of writing, AMD driver seems to not have this entry point
+		if(m_Real.glVertexArrayVertexAttribDivisorEXT)
+		{
+			m_Real.glVertexArrayVertexAttribDivisorEXT(vaobj, Index, Divisor);
+		}
+		else
+		{
+			GLuint VAO = 0;
+			m_Real.glGetIntegerv(eGL_VERTEX_ARRAY_BINDING, (GLint *)&VAO);
+			m_Real.glBindVertexArray(vaobj);
+			m_Real.glVertexAttribDivisor(Index, Divisor);
+			m_Real.glBindVertexArray(VAO);
+		}
 	}
 
 	return true;