0027257: Visualization, TKOpenGl - bind integer vertex attributes

2025-08-09 13:22:24 +03:00 · 2016-03-14 13:05:36 +03:00
2 changed files with 10 additions and 2 deletions
--- a/src/OpenGl/OpenGl_VertexBuffer.hxx
+++ b/src/OpenGl/OpenGl_VertexBuffer.hxx
@@ -15,7 +15,7 @@
 #ifndef _OpenGl_VertexBuffer_H__
 #define _OpenGl_VertexBuffer_H__

-#include <OpenGl_GlCore20.hxx>
+#include <OpenGl_GlCore32.hxx>
 #include <OpenGl_Resource.hxx>
 #include <OpenGl_Context.hxx>
 #include <OpenGl_ShaderProgram.hxx>
--- a/src/OpenGl/OpenGl_VertexBuffer.lxx
+++ b/src/OpenGl/OpenGl_VertexBuffer.lxx
@@ -35,7 +35,15 @@ inline void OpenGl_VertexBuffer::bindAttribute (const Handle(OpenGl_Context)&
  }

  theCtx->core20fwd->glEnableVertexAttribArray (theAttribute);
-  theCtx->core20fwd->glVertexAttribPointer (theAttribute, theNbComp, theDataType, theDataType != GL_FLOAT, theStride, theOffset);
+  if (theDataType == GL_UNSIGNED_INT
+   && theCtx->core32 != NULL)
+  {
+    theCtx->core32->glVertexAttribIPointer (theAttribute, theNbComp, theDataType, theStride, theOffset);
+  }
+  else
+  {
+    theCtx->core20fwd->glVertexAttribPointer (theAttribute, theNbComp, theDataType, theDataType != GL_FLOAT, theStride, theOffset);
+  }
 }

 #if !defined(GL_ES_VERSION_2_0)