Weighted, Blended Order-Independent Transparency algorithm has been added rasterization pipeline.
In contrast to classical blending transparency it makes transparent objects look independent
from point of view. It also gives better depth occlusion when being used together with a weight factor
based on value of a GL depth buffer. The feature supports desktop OpenGL, OpenGL ES 3.0, ANGLE
and can be used together with MSAA on desktop GL.
To be used it require availability of:
1) Shaders pipeline.
2) Floating point color format for framebuffer (GL_ARB_color_buffer_float).
3) Multiple render targets (GL_ARB_draw_buffers).
Patch does not modify API and does not require application porting.
It adds new rendering options to Graphic3d_RenderingParams structure:
a) Transparency method from enumeration.
b) Scalar factor [0-1] controlling influence of a fragment's depth to its visibility.
Patch also simplifies processing of transparent objects for standard method:
rendering priority of transparent graphical structures is managed automatically,
therefore there is no need to care about it at application's side.
Graphic3d_SequenceOfHClipPlane now inherits Standard_Transient.
PrsMgr_PresentableObject, Graphic3d_Structure, Graphic3d_CStructure,
V3d_View, OpenGl_View now manages the plane list by Handle.
The getters ::GetClipPlanes() has been removed,
setters taking non-handle ::SetClipPlanes() has been marked deprecated.
OpenGl_Structure::Render() and SelectMgr_ViewerSelector::checkOverlap()
now disable global (view) clipping planes for objects
with flags Graphic3d_TMF_TriedronPers and Graphic3d_TMF_2d
or with new flag Graphic3d_SequenceOfHClipPlane::ToOverrideGlobal().
OpenGl_Clipping now implements interface for managing clipping planes
without copying the sequences.
The filtering of duplicates is no more performed by OpenGl_Clipping
- application is responsible to not do this.
OpenGl_Clipping tries avoiding unnecessary allocations for managing
list of active planes.
MFC sample has been updated to use V3d_View::ClipPlanes() method.
Graphic3d_ClipPlane - Graphic3d_AspectFillArea3d is now stored as class field.
OpenGl_CappingAlgo::RenderCapping() now handles special mode
preserving material from rendered object.
MeshVS_ElementalColorPrsBuilder::Build() now creates single primitives group
for triangles, thus Closed flag is correctly applied.
Redundant methods OpenGl_Structure::DrawGroups() and ::renderClosedGeometry()
have been removed.
Draw Harness, ViewerTest - vaspects now preserves display mode
and location when assigning sub-shape aspects.
The syntax of command vclipplane has been revised
(preserving compatibility with old syntax):
- Use "-param" style syntax for all arguments.
- Eliminate redundant arguments "change", "view", "object".
- Allow passing multiple parameters withing single call.
- Do not require "create" command - create new plane implicitly.
- "maxplanes" argument does not require view name anymore.
- "delete" does not throws TCL exception for non-existing plane.
- "view" argument without list now applies to active view.
- Handle * and ALL withing "delete" to remove all defined planes.
update test case bugs/vis/bug26028
OpenGl_CappingAlgo::RenderCapping() now updates clipping state in Shader Manager.
OpenGl_View::render() clipping state setup has been moved to OpenGl_View::renderScene().
OpenGl_ShaderManager now converts position to homogeneous coordinates within clipping code GLSL.
This fixes capping plane rendering with clipping planes applied.
Fixed possible Clipping planes misconfiguration when FFP is used;
error-prone OpenGl_Clipping::AddWorldLazy() method has been dropped.
OpenGl_Structure::Render(), OpenGl_CappingAlgo::RenderCapping() - render
groups of instanced and this structure in the same manner
using ::renderGeometry() and ::renderClosedGeometry() instead of ::DrawGroups().
Skip capping algo for structures without groups of closed primitives.
OpenGl_Clipping - do not setup clipping planes using FFP when it is disabled.
OpenGl_ShaderManager - apply 2d texture coordinates transformation in GLSL programs.
OpenGl_Context::SetTextureMatrix() - move texture matrix assignment from OpenGl_Workspace::setTextureParams() to OpenGl_Context.
Add test case demo/samples/dimensionsglsl with FFP turned OFF.
Add test case v3d/glsl/texture_trsf applying texture transformation.
Small correction of test case for issue CR26122
Missing headers added; includes of headers "Handle_...hxx" removed.
Misuses of macro Handle() and its use in typedefs corrected.
Alias classes Profile and Option are removed from IFSelect; ones defined in MoniTool are used directly.
Removed header files defining only Handle classes (except Image_PixMap_Handle.hxx)
Classes SelectMgr_BaseFrustum and now inherit Standard_Transient and can be manipulated by Handle (not NCollection_Handle)
Fixed reference-type local variable pointing to temporary object
Use of handle in conditional expressions and comparisons to NULL are replaced by call to method IsNull()
OpenGl_CappingAlgo - move global variables to OpenGl_Workspace class fields.
OpenGl_View::ShaderSource::Source() - drop static for local variable.
OpenGl_Window - drop redundant global constant THE_DEFAULT_BG_COLOR.
0025301: Visualization, TKOpenGl - transpose matrix manually before glUniformMatrix4fv()
OpenGl_View::ReleaseGlResources() - release GL resources of trihedron, do not destroy it
StdPrs_ShadedShape, add flag theToExploreSolids to method ::Add().
Previously the tool collected triagnulations from all Faces into single graphic group.
The automated algorithm for back-face culling activation has to disable culling
when within closed Solids single Compound contains also open Shells.
Now tool is able to optionally (enabled by default) split these two categories of primitives
into dedicated groups with independent back-face culling settings.
In addition, this closed flag is now stored in Graphic3d_Group::myIsClosed which allows
capping algorithm OpenGl_CappingAlgo to automatically filter improper groups.
Redesign Graphic3d_ArrayOfPrimitives
Store vertices data in buffer objects managed using smart-pointers
- no more low-level memory corruption by memory releasing after VBO creation.
Remove broken hasEdgeInfos.
Interleave vertex attributes (position, color, normal, uv) in single buffer.
Remove from Graphic3d_ArrayOfPrimitives methods ::Orientate().
Remove structures Graphic3d_PrimitiveArray, CALL_DEF_PARRAY.
Add support for 2D vertex arrays.
Graphic3d_Group - remove array or primitive arrays.
Introduce more universal method Graphic3d_Group::AddPrimitiveArray().
Fix warning
Graphic3d_Group is now abstract class and should be instantiated
using Graphic3d_Structure::NewGroup() method.
Graphic3d_CGroup has been removed.
The groups list is no more duplicated within Graphic3d_Structure and OpenGl_Structure.
Removed unused/duplicated fields from Graphic3d_Group.
Prs3d_Presentation - remove redundnant field myCurrentGroup.
PrsMgr_Presentation3d::Erase(), ::Clear() - avoid possible NULL dereference.
OpenGl_GraphicDriver/Graphic3d_GraphicDriver - group management methods have been removed
(moved to Graphic3d_CStructure and Graphic3d_Group interfaces).
Graphic3d_Group::GroupPrimitivesAspect() - copy IsEmission flag
Fix wrong iterator
Fix compilation issues
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast
Wrong license statements corrected in several files.
Copyright and license statements added in XSD and GLSL files.
Copyright year updated in some files.
Obsolete documentation files removed from DrawResources.
- The NCollection_Sequence (Graphic3d_SequenceOfHClipPlane) is used for handling ordered lists of clipping planes instead of NCollection_Set (Graphic3d_SetOfHClipPlane).
- OpenGl_Display - release GL resources correctly on closing views
- OpenGl_AspectFace, OpenGl_AspectText, OpenGl_AspectLine, OpenGl_AspectMarker - initialize OpenGl resources on demand, when context is available.
- Graphic3d_TextureRoot - use const modifier for GetId method to avoid asynchronous resource state at OpenGl.
- Do not call OpenGL functions if no active GL context has been left
- Reset thread's context before deletion for Mesa WNT
1) Resolved buggy situation of shared clip planes between view and structure;
2) Added clipping plane equation space identification - to be used with shaders;
3) Code refactoring to resolve performance issue reported by 0024189;
4) Attachment of stencil buffer to FBO.
Added test case bugs/vis/bug24224
Graphical clipping:
- Use "Graphic3d_ClipPlane" to defined clipping for PrsMgr_PresentableObject (local clipping), for V3d_View (global clipping).
Get rid of old implementations:
- Remove Visual3d_ClipPlane.
- Port V3d_Plane to Graphic3d_ClipPlane core.
Selection Sensitives:
- Port "Matches" method to add full set of arguments (SelectBasics_PickArgs), including min-max depth coming from selector.
- Get rid of transient data for pair Matches -> ComputeDepth.
- Extend SelectMgr_ViewerSelector::LoadResult to work with local clipping, add virtual callbacks to compute globa/local depth clipping for picking.
Capping rendering algorithm:
- Recursive rendering algorithm for OpenGl_Groups.
- Introduced Rendering filter for groups.
Clipping plane management in TKOpenGl:
- Added OpenGl_ClippingState to OpenGl_Context.
DRAWEXE commands:
- Ported "vclipplane" command for new approach.
- Added "vsettexturemode" command for changing texture details in views (enable / disable textures).
Correct DownCast syntax (compilation error)
Fix new compiler warnings
tests/bugs/vis/bug22906 migrated to the new vclipplane syntax
