5 files changed, 9 insertions, 0 deletions
diff --git a/src/graphicsmanager.cpp b/src/graphicsmanager.cpp
index 5455da65b..257d4233e 100644
--- a/src/graphicsmanager.cpp
+++ b/src/graphicsmanager.cpp
@@ -961,6 +961,7 @@ void GraphicsManager::initOpenGLFunctions()
         assignFunction(glEnableVertexAttribArray, "glEnableVertexAttribArray");
         assignFunction(glDisableVertexAttribArray,
             "glDisableVertexAttribArray");
+        assignFunction(glVertexAttribIPointer, "glVertexAttribIPointer");
     }
     else
     {
diff --git a/src/render/mgl.cpp b/src/render/mgl.cpp
index 58b60019c..63730fbad 100644
--- a/src/render/mgl.cpp
+++ b/src/render/mgl.cpp
@@ -94,6 +94,7 @@ defName(glVertexAttribFormat);
 defName(glBindVertexBuffers);
 defName(glIsBuffer);
 defName(glVertexAttribIFormat);
+defName(glVertexAttribIPointer);
 
 #ifdef WIN32
 defName(wglGetExtensionsString);
diff --git a/src/render/mgl.h b/src/render/mgl.h
index 85545c19d..53c6b714b 100644
--- a/src/render/mgl.h
+++ b/src/render/mgl.h
@@ -97,6 +97,7 @@ defNameE(glVertexAttribFormat);
 defNameE(glBindVertexBuffers);
 defNameE(glIsBuffer);
 defNameE(glVertexAttribIFormat);
+defNameE(glVertexAttribIPointer);
 
 #ifdef WIN32
 defNameE(wglGetExtensionsString);
diff --git a/src/render/mgltypes.h b/src/render/mgltypes.h
index df9c16eee..9deefd41f 100644
--- a/src/render/mgltypes.h
+++ b/src/render/mgltypes.h
@@ -142,6 +142,8 @@ typedef void (APIENTRY *glBindVertexBuffers_t) (GLuint first, GLsizei count,
 typedef GLboolean (APIENTRY *glIsBuffer_t) (GLuint buffer);
 typedef void (APIENTRY *glVertexAttribIFormat_t) (GLuint attribindex,
     GLint size, GLenum type, GLuint relativeoffset);
+typedef void (APIENTRY *glVertexAttribIPointer_t) (GLuint index, GLint size,
+    GLenum type, GLsizei stride, const GLvoid * pointer);
 
 // callback
 typedef void (APIENTRY *GLDEBUGPROC_t) (GLenum source, GLenum type, GLuint id,
diff --git a/src/render/modernopenglgraphics.cpp b/src/render/modernopenglgraphics.cpp
index c0809012d..df14a026e 100644
--- a/src/render/modernopenglgraphics.cpp
+++ b/src/render/modernopenglgraphics.cpp
@@ -172,6 +172,7 @@ void ModernOpenGLGraphics::postInit()
 
     mglBindVertexBuffer(0, mVbo, 0, 4 * sizeof(GLint));
     mglVertexAttribBinding(mPosAttrib, 0);
+//    mglVertexAttribIPointer(mPosAttrib, 4, GL_INT, 4 * sizeof(GLint), 0);
     mAttributesCached = mVbo;
 
     screenResized();
@@ -1203,6 +1204,7 @@ void ModernOpenGLGraphics::bindArrayBufferAndAttributes(const GLuint vbo)
         mAttributesCached = mVboCached;
 //        logger->log("bind vertex buffer: %u", mVboCached);
         mglBindVertexBuffer(0, mVboCached, 0, 4 * sizeof(GLint));
+//        mglVertexAttribIPointer(mPosAttrib, 4, GL_INT, 4 * sizeof(GLint), 0);
 //        mglVertexAttribBinding(mPosAttrib, 0);
     }
     else if (mAttributesCached != mVboCached)
@@ -1210,6 +1212,7 @@ void ModernOpenGLGraphics::bindArrayBufferAndAttributes(const GLuint vbo)
         mAttributesCached = mVboCached;
 //        logger->log("bind vertex buffer: %u", mVboCached);
         mglBindVertexBuffer(0, mVboCached, 0, 4 * sizeof(GLint));
+//        mglVertexAttribIPointer(mPosAttrib, 4, GL_INT, 4 * sizeof(GLint), 0);
 //        mglVertexAttribBinding(mPosAttrib, 0);
     }
 }
@@ -1220,6 +1223,7 @@ void ModernOpenGLGraphics::bindAttributes()
     {
         mAttributesCached = mVboCached;
         mglBindVertexBuffer(0, mVboCached, 0, 4 * sizeof(GLint));
+//        mglVertexAttribIPointer(mPosAttrib, 4, GL_INT, 4 * sizeof(GLint), 0);
 //        mglVertexAttribBinding(mPosAttrib, 0);
     }
 }