OpenGl_Resource was slightly corrected and OpenGl_Element was extended
with Release method to manage GPU resources.
OpenGl_PrimitiveArray now uses new OpenGl_VertexBuffer class (requires OpenGL 1.5+).
Strange workarounds for feedback mode were removed.
OpenGl_Context now provides access to shared GPU resources
and manages resources queue for delayed release
(replaces functionality of removed OpenGl_ResourceCleaner).
Loaded GL_ARB_texture_buffer_object and GL_ARB_draw_instanced extensions.
Global maps of views, workspaces and structures
were moved to OpenGl_GraphicDriver members.
UserDrawCallback() function moved to OpenGl_GraphicDriver methods.
Aspect_GraphicCallbackStruct now holds handle of OpenGl_Context
instead of system-dependent pointers to GL context definition.
New classes NCollection_Vec2, NCollection_Vec3 and NCollection_Vec4
implements interface to low-level data (points, vertices, colors) in GLSL-style.
Removed EnableVBO argument from vdrawparray Draw Harness command
Corrected compilation errors
Fixed wrong argument in Index VBO initialization
Fixed several cases of incorrect memory management in TKV3d
Visual3d_ViewManager::Remove()
Destroy structures before last view removed for correct GPU resources management.
Graphic3d_Structure::GraphicClear()
Remove groups to avoid usage of dead OpenGl_Group pointers.
V3d_View::Remove()
Fixed mistake in #0000280 patch.
Small correction
Fixed OCC280 test command
Replace removed view within created one in ViewerTest EventManager.
ViewerTest, do not create unused 3D view
In current design NIS_View always created and used for both - NIS objects and AIS objects.
GL_NONE replaced with PARRAY_DRAW_MODE_NONE to disambiguate with GL_POINTS
DRAW_MODE_NONE constant moved into OpenGl_PrimitiveArray class to avoid potential name collisions
Added native handles to OpenGl_Context
Removed unused and unimplemented PolygonHoles
Removed unimplemented Polygon functions
Removed unused QuadrangleMesh functions
Removed unused TriangleMesh functions
Removed dead Bezier function declarations
Redirect Graphic3d_Group::Polyline() to primitives array
Move Prs3d_ShadedShape template code to StdPrs_ShadedShape
where it is only used before.
Remove TriangleSet usage from AIS_TexturedShape
Texture coordinates functionality added StdPrs_ShadedShape
to eliminate code duplication.
Eliminated usage of TriangleSet from QABugs_PresentableObject
Eliminated usage of TriangleMesh from StdPrs_ShadedSurface
Removed TriangleMesh and TriangleSet support
OpenGl_PrimitiveArray - render Edges only for primitives > GL_LINE_STRIP
Added vgrid command to show grid in 3D Viewer
Extend OpenGl_Context to provide GL2.0 core functionality
Added 'glext.h' header provided by Khronos group with definitions
and GL functions' types.
Added OpenGl_GlCoreXX structures with function list
to appropriate GL core functionality.
Fixed memory leak in OpenGl_Context destructor.
Eliminate inclusions of gl.h header
Use OpenGl_GlCore11.hxx instead.
Removed obsolote M_PI redefinitions.
Slightly cleaned up included headers.
Reuse definitions from glext.h
OpenGl_ArbVBO and OpenGl_ExtFBO originally provide own definitions
for OpenGL extensions.
