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* AABBox: Add rotate(..)Sven Gothel2014-03-171-22/+75
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* Quaternion: Add rotateByEuler(..); AABBox: Add translate(..); Minor edits ..Sven Gothel2014-03-175-37/+111
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* Bug 801: Revisit UIShape/SceneController (Ray-Picking, Full Object/Model ↵Sven Gothel2014-03-161-21/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | driven, ..) TODO: Transformations SceneUIController handles shapes generic: Rendering, selecting and event traversing. All data (transforms ..) are provided by UIShape. UIShape: - Dispatching NEWT MouseEvent's on MouseEventListener - Separates the 2d-transforms for shape/region and 3d transform, scale and rotation GPUUISceneGLListener0A Demo code merely aggregates the shapes and attaches listener, hence includes the 'application logic'. Working: - picking any shape - dragging, zooming, actions TODO: - Fix transformations, actually the rotations (button) look odd probably due to 'unlucky' rotation center and axis. +++ RegionRenderer: Removed Matrix ops, which shall be applied on PMVMatrix
* Add generic support for picking via raycast intersection and AABBox (or similar)Sven Gothel2014-03-165-25/+190
| | | | | | | | | - New simple type Ray, denominating a .. ray - Added PMVMatrix.gluUnProjectRay(..) similar to gluUnproject(..) however, result is a Ray. - Added AABBox.intersectsRay(Ray) ..
* FloatUtil/VectorUtil: Enhance isEqual/compare w/ and w/o epsilon, add unit ↵Sven Gothel2014-03-157-192/+268
| | | | tests - Cleanup VectorUtil (vec2/3 naming, remove dedundant functions)
* Quaternion: User EPSILON for all tests against zero and one (identity .. ) ↵Sven Gothel2014-03-155-43/+140
| | | | and document the same. ; Minor edits ..
* Bug 801: Remove Vertex.Factory from AffineTransform ; Add AABBox tranformed ↵Sven Gothel2014-03-156-36/+78
| | | | resize.
* Bug 801: Outline/OutlineShape tranform and sort fixes ; Quaternion: Reduce ↵Sven Gothel2014-03-156-41/+111
| | | | | | | | | | | | | | | | | | | | muls in rotateVector Quaternion: - rotateVector(..): Reduce multiplication count by 17 Graph: - Outline - add: transform - fix compareTo .. use EPSILON - OutlineShape - add transform - fix compareTo .. use EPSILON - use Comparator<Outline> in sortOutlines to avoid reversal of list - Extract OutlineShapeXForm, pairing { OutlineShape, AffineTransform }
* PMVMatrix.glLoadMatrix(Quaternion): Load Quaternion's directly w/o ↵Sven Gothel2014-03-141-2/+15
| | | | intermediate matrix
* Bug 801: Add Frustum support to Region; Misc ..Sven Gothel2014-03-144-40/+122
| | | | | | | | | | | Region: Add Frustum support, to drop 'out of sight' shapes RenderState: Add hints, e.g. BITHINT_BLENDING_ENABLED, allowing user code to toggle background color etc Demos: Incomplete - WIP - Reuse mapped object to window coords computed at reshape - TODO: Use minimal Scenegraph for Graph-UI ..
* Quaternion: Fix and enhance class incl. Extensive Unit Tests (all passed)Sven Gothel2014-03-142-232/+968
| | | | | | | | | | | - Add documentation incl references (Matrix-FAQ, Euclideanspace, ..) - Compared w/ other impl., i.e. WildMagic, Ardor3D, .. and added missing functionality incl unit tests. - PMVMatrix: Added convenient Quaternion 'hooks' - glRotate(Quaternion) - glLoadMatrix(Quaternion)
* Math and PMVMatrix: Cleanup and RefineSven Gothel2014-03-144-257/+491
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Added final qualifier where possible - Refined API doc - FloatUtil: - Add machine EPSILON - fixed value and runtime computed (real machEps) - incl. isZero(..), isEqual(..) - Add makeRotationAxis(..) - Moved from PMVMatrix for reusage - Add makeRotationEuler(..) - New, not recommended due to Gimbal-Lock - Add copyMatrix[Column|Row](..) - Add more PI variations and trigo-func float mappings - Removed cross and normalize, use VectorUtil! VectorUtil: - Add copyVec* - Add equals and isZero w/ and w/o EPSILON - Add distance[Square] - Add length[Square] PMVMatrix: - Removed 'destroy' method in favor of making most fields 'final'. AffineTransform: - Added AABBox transform - Public multiply
* Bug 801: AffineTransform: Remove Serializable, make methods final; ↵Sven Gothel2014-03-063-14/+48
| | | | FloatUtil: Add DEBUG and description about Row-Major and Column-Major Order. AABBOX: Use FloatUtil.DEBUG for mapToWindow(..)
* Bug 801: Fix UI-Graph Demo (Part-1) ; TextRegionUtil: Add Generic ↵Sven Gothel2014-03-061-8/+35
| | | | processString(..) using ShapeVisitor interface (visitor pattern)
* Bug 801: Fix 183e1bc1868699b99eb9f9c8bf18d646d1120a48 'window box' CalculationSven Gothel2014-03-051-0/+48
| | | | | | | | | | | | Commit 183e1bc1868699b99eb9f9c8bf18d646d1120a48 only mapped object's bbox max/min points to window space, which is wrong due to possible rotation in 3d space. This commit adds AABBox.mapToWindow(..) method, which correctly either uses 4 points of the bbox in 3d space (using center-z) or all 8-points and creating a new bounding box. The resulting width and height of this window bbox gives the maximum amount of rectangular pixels for AA.
* Bug 801: VectorUtil: Pass result vector, allowing caller to manage memory ↵Sven Gothel2014-03-055-124/+121
| | | | (performance, reduce temp objects)
* Bug 801: Refine 'blend' usage and modes (API-doc and demo-code)Sven Gothel2014-03-052-5/+100
| | | | | | | | | | | | | - RegionRenderer: Make 'blend' setup pluggable via new GLCallbacks - 'GLCallback's for enable/disable, passed via 'create' method. Add 'defaultBlendEnable' and 'defaultBlendDisable', replacing previos fixed calls. - GLRegion.draw(..) added API-doc notes about: - Decorating call with RegionRenderer.enable(..) - glClearColor impact and blending - VBORegion2P*: Remove fixed glClearColor(..) call
* Bug 801: Add MSAA_RENDERING_BIT ; VBAA: Uses GL_NEAREST (good result) ; ↵Sven Gothel2014-03-023-11/+46
| | | | Demos: Use local GLRegion for uncached text (perf.) ..
* AudioSink: Fix API doc (minor edit)Sven Gothel2014-03-011-3/+3
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* Bug 801: VBAA Render-Mode Based on SampleCount (not a user-based texWidth) ; ↵Sven Gothel2014-03-015-47/+123
| | | | | | | | | | | | | | Proper FontSize -> PixelSize VBAA Render-Mode Based on SampleCount (not a user-based texWidth) - All Region based APIs now use 'sampleCount' instead of 'texWidth' - VBORegion2PES2 calculates perspective FBO width/height considering the sampleCount Proper FontSize -> PixelSize - Font: Add getPixelSize(fontSize, dpi) - Text* Demos/Classes: Use proper fontSize -> PixelSize
* Bug 801: TextRenderUtil/TextRendererGLELBase - Pass Font and fontSize to all ↵Sven Gothel2014-02-281-22/+22
| | | | methods ; TestTextRendererNEWT00 make font/fontSize configurable, animate fontSize
* Bug 801: Enhance API doc of FontSet and FontFactorySven Gothel2014-02-282-10/+18
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* Bug 801: TextRegionUtil add 'special' for cache-key; Minor editsSven Gothel2014-02-282-10/+14
| | | | | | Minor edits: - Add some docs to curve-shader and remove FIXME remark about gcu_Alpha, which will be used < 1.0. - Font: Add more TTF references
* Bug 801: Outline.setClosed(boolean [closed->closeTail]): Always close, but ↵Sven Gothel2014-02-283-21/+54
| | | | allow to either close-tail or head; OutlineShape/Triangulator: Pass 'sharpness' (very little effect though)
* Bug 801: Graph TextRenderer Cleanup Part-6: Fix TypecastRenderer; Minor EditingSven Gothel2014-02-281-2/+3
| | | | | | | Fix TypecastRenderer: - Ensure quad shapes are closed! - Revalidate point -> shape interpretation using orig. Typcast code - Fix 'midPoint(..)' use float values
* Bug 802: Graph TextRenderer Performance Part-3: Reuse 'float[] coordsEx' ↵Sven Gothel2014-02-271-1/+2
| | | | storage, ease on GC
* Bug 801: Graph TextRenderer Cleanup Part-5: *Region API Cleanup (protected ↵Sven Gothel2014-02-272-20/+17
| | | | impl. part)
* Bug 801: Graph TextRenderer Cleanup Part-4: Text[Render->Region]Util API: ↵Sven Gothel2014-02-272-48/+41
| | | | Better separation of cached and uncached regions
* Bug 801: Graph TextRenderer Cleanup Part-3: Region.addOutlineShape(..) Push ↵Sven Gothel2014-02-275-189/+120
| | | | | | | | | | | | | | | | | | GL data directly incl. all index validations Region: - Remove redundant methods to make OutlineShape the unique source. - addVertex(..) - addTriangles(..) - Perform all index validations in addOutlineShape(..) - Push OutlineShape's vertex data and it's triangle indices directly to VBO. GLRegion: Add clear(..) method, allowing to clear the region for new data, i.e. OutlineShapes
* Bug 801: Graph TextRenderer Cleanup Part-2: Remove Path2D from ↵Sven Gothel2014-02-272-52/+2
| | | | | | | | | Glyph/Typecast* ; Misc Cleanup Commit c3621221b9a563495b4f54fe60e18e8db8cc57fb introduced create an OutlineShape per Glyph from it's data w/o going through Path2D. Misc Cleanup: Remove unused code/fields, use private/final where possible.
* Bug 802: Graph TextRenderer Performance Part-2 (fix artifacts, cleanup, ↵Sven Gothel2014-02-256-463/+424
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | incomplete) - OutlineShape - Add DIRTY_VERTICES bit in triangulation, which in turn solves the rendering artifact issue. - transformOutlines(..) -> protected - Note: Always pick triangles first, then vertices. The former renders vertices dirty. - Region - Make triangles / vertices accessible - Add 'validateIndices()' to add indices for triangles, code moved from the GLRegion* impl. Shall be refined later! - GLRegion - Passing 'RegionRenderer' instead of RenderState .. reducing argument numbers and aligning all related 'render' methods while giving association to the RegionRenderer. - Renderer -> RegionRenderer, dropping 'intermediate' RegionRenderer - Dropping draw() in RegionRenderer, should be issued simply by GLRegion in a unique fashion. - Dropping RegionFactory Too simple code as-is, simply invoke in Region.create(..) - Overall: - Add 'final' qualifier - Remove overloaded methods where rither default args can be used or a followup method call completes the 'intention'.
* Bug 802: Graph TextRenderer Performance Part-1 (incomplete, rendering artifacts)Sven Gothel2014-02-2410-290/+614
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Strategy Change: - Font.Glyph itself holds it's OutlineShape with it's default scaling. Triangulation is done only once per glyph! - A CharSequence produces a Region by translating and scaling each Glyphs's OutlineShape. This removes the need for re-triangulate - see above. See: TextRendererUtil - The indices of re-added Triangles are offset to the new vertices (FIXME, seems not be be accurate yet). - OutlineShape's vertices and triangles are reused if 'clean'. - Simplified code - Reduced copies API Changes: - OutlineShape, Region, ...: See above - Removed TextRenderer, GlyphShape and GlyphString: Redundant - Added TextRendererUtil to produce the Region from CharSequence Result: - Over 600 fps while changing text for each frame. Previously only ~60fps max. TODO: - Region shall not hold the triangles itself, but the indices instead. This will remove the need to swizzle w/ vertices in the Region Renderer impl and easies reusage of OutlineShapes.
* Merge branch 'master' into stash_glyphcacheSven Gothel2014-02-23140-6144/+18447
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: make/scripts/tests.sh src/jogl/classes/com/jogamp/graph/curve/OutlineShape.java src/jogl/classes/com/jogamp/graph/curve/Region.java src/jogl/classes/com/jogamp/graph/curve/opengl/GLRegion.java src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java src/jogl/classes/com/jogamp/graph/curve/opengl/Renderer.java src/jogl/classes/com/jogamp/graph/curve/opengl/TextRenderer.java src/jogl/classes/com/jogamp/graph/font/Font.java src/jogl/classes/com/jogamp/opengl/math/VectorUtil.java src/jogl/classes/jogamp/graph/curve/text/GlyphShape.java src/jogl/classes/jogamp/graph/curve/text/GlyphString.java src/jogl/classes/jogamp/graph/font/typecast/TypecastFont.java src/jogl/classes/jogamp/graph/font/typecast/TypecastGlyph.java src/jogl/classes/jogamp/graph/font/typecast/TypecastRenderer.java
| * Bug 927 - Multithreading (MT) - GLMediaPlayer.GLMediaEventListener: Remind ↵Sven Gothel2014-02-222-7/+13
| | | | | | | | that commands shall be off-loaded on another thread!
| * Bug 975 - GLJPanel's OffscreenDrawable shall not double swap - Fix auto-swap ↵Sven Gothel2014-02-182-13/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mechanism ; Refined API doc getDefaultReadBuffer() ; Add GLDrawableUtil.swapBuffersBeforeRead(..) Commit 82f679b064784213591b460fc5eaa1f5f196fbd1 which introduces the default swap-buffers mechanism is erroneous: The OffscreenBack backend requires the following operation order: Order-1: [1] - GL display [2] - GL swapBuffers (always due to single-buffer non-MSAA or MSAA offscreen drawable) [3] - readPixels +++ Commit 82f679b064784213591b460fc5eaa1f5f196fbd1 however introduced: Order-2: [a] - GL display [b] - readPixels [c] - GL swapBuffers (always due to single-buffer non-MSAA or MSAA offscreen drawable) since [a] and [b] happened in Updater's display method, and [c] followed the same triggered by GLAutoDrawableHelper. +++ The proof, commit d46d9ad8f998a7128d9f023294d5f489673d6d8a, is faulty, since it always included the 'snapshot' GL event listener which turned-off auto-swap and swapped before read-pixels. TL;DR it enforced proper Order-1. +++ This fix allows the Backend to intercept disable GLDrawableHelper's setAutoSwapBufferMode(..) and perform the auto-swap mode itself in the proper Order-1. The unit test has been refined to optionally disable the snapshot to validate auto-swap mode. +++ Refined GLBase and GLContext's API doc for 'getDefaultReadBuffer()' +++ Add GLDrawableUtil.swapBuffersBeforeRead(..) and reuse it for TileRendererBase (original impl.).
| * Graph: RendereState: Create own PMVMatrix if passed value is null; Renderer: ↵Sven Gothel2014-02-152-3/+11
| | | | | | | | Add reshapeNotify(..) for NOP PMV reshape notification
| * GLReadBufferUtil: Set PACK_ROW_LENGTH for ES3 as well - also set ReadBuffer ↵Sven Gothel2014-02-141-2/+5
| | | | | | | | to default.
| * GLPixelStorageModes: Safe and restore GL2ES3 modes, i.e. add missing GLES3 ↵Sven Gothel2014-02-141-32/+38
| | | | | | | | modes. GLStateTracker: Use proper GL names for enums
| * TextureIO: Fix PNGTextureWriter Vertical-Flip, i.e. pass TextureData's ↵Sven Gothel2014-02-131-2/+2
| | | | | | | | getMustFlipVertically() to PNGPixelRect
| * Bug 962 - AWTGLReadBufferUtil should use aligned BufferedImage [for resized ↵Sven Gothel2014-02-133-16/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | images]; Fix GLReadBufferUtil GL_PACK_ROW_LENGTH AWTGLPixelBuffer is being reused when used via AWTGLPixelBufferProvider even when resized. AWTGLPixelBufferProvider uses GLPixelBufferProvider's requiresNewBuffer(..) which returns true if - allowRowStride==true and pixel-buffer size < required-size, or - allowRowStride==false and pixel-buffer size < required _or_ width doesn't match otherwise it returns true, i.e. the AWTGLPixelBuffer is reused. Hence the used BufferedImage might need to be aligned, i.e. using AWTGLPixelBuffer's getAlignedImage(..). +++ GLReadBufferUtil shall use current texture-data width for GL_PACK_ROW_LENGTH, not the static GLPixelBuffer's width, which may not reflect image dimension (resize) +++
| * TextureIO: Support PNGTextureWriter w/ TextureData IntBuffer (via ↵Sven Gothel2014-02-132-18/+102
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PNGPixelRect and PixelFormatUtil) TextureData IntBuffer could be caused by AWT read-pixels but is not seamlessly supported via PNGPixelRect since the latter uses a hardcoded ByteBuffer. Add static PNGPixelRect.write(..) supporting IntBuffer to support this case for now. PNGPixelRect instances do not support any Buffer type to avoid a bloated implementation. PixelFormatUtil adds support for int32 pixel format conversion.
| * GLMediaPlayer: Add user attached objects, similar to GLContext - Allowing ↵Sven Gothel2014-01-261-1/+19
| | | | | | | | GLMediaEventListener impl. to access GLMediaPlayer associated objects
| * Bug 948 - Autodetect GLRendererQuirks.SingletonEGLDisplayOnlySven Gothel2014-01-241-2/+6
| | | | | | | | | | | | | | | | | | Refines commit fbe00e6f5dca8043b40dd96f096fecc9424e0cc3 Instead of querying driver artifacts (vendor, platform, version ..) we simply can autodetect this quirk by trying to get a second egl-display handle when initializing the EGLDrawablFactory's default device: EGL.eglGetDisplay(EGL.EGL_DEFAULT_DISPLAY)
| * GLRendererQuirks.addQuirks(..): Fix array bounds checkSven Gothel2014-01-241-1/+1
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| * Bug 948 - NVIDIA 331.38 (Linux X11) EGL impl. only supports _one_ EGL ↵Sven Gothel2014-01-241-3/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Display via eglGetDisplay(..) NVIDIA 331.38 (Linux X11) EGL impl. only supports _one_ EGL Display via eglGetDisplay. - Subsequent eglGetDisplay(..) calls fail. - Using the same 'global' egl-display does work though Remedy: Add 'GLRendererQuirks.SingletonEGLDisplayOnly' Detection of quirk is done as usual in GLContextImpl.setRendererQuirks(..), and EGLDrawableFactory passes the quirk, if detected, down to EGLDisplayUtil. The latter implements the singleton eglDisplay handle. EGLDisplayUtil: Cleaned up .. - EGLDisplayRef employs the reference handling incl. eglInitialize(..) and eglTerminate(), as well as the new singleton quirk. - Mark all internal methods 'private', to remove possible [untested] sideffects.
| * Bug 950 - Recognize full FBO capabilities for ES 3.0 - ↵Sven Gothel2014-01-241-16/+17
| | | | | | | | | | | | | | | | [GLContext|GL].hasFullFBOSupport() == true OpenGL ES 3.0 supports full framebuffer operations, incl. multiple color-attachments and multisample. Hence [GLContext|GL].hasFullFBOSupport() shall returns true w/ a ES 3.0 context.
| * Bug 921: FPSAnimator debug output on stderr shall happen only if DEBUG is ↵Sven Gothel2014-01-221-3/+9
| | | | | | | | enabled
| * Better shared GLAutoDrawable synchronization: Block slave instances to also ↵Sven Gothel2014-01-211-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | block until all master's GLEventListener.init(..) methods have been called Better shared GLAutoDrawable synchronization. Block slave instances to also block until all master's GLEventListener.init(..) methods have been called - GLSharedContextSetter: Add areAllGLEventListenerInitialized() - GLCanvas (SWT, AWT) - GLJPanel - GLAutoDrawableBase (GLWindow, ..) - GLDrawableHelper's isSharedGLContextPending(..) takes 'areAllGLEventListenerInitialized()' into consideration allowing to block the slave creation until master is completed. This solves teh use case, where the master creates resources in it's GLEventListener initialization (buffers), which are shared with it's slaves.
| * Bug 942: GLBufferObjectTracker Enhancement [2/2]: Add mapped buffer ↵Sven Gothel2014-01-213-134/+399
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | capabilities to GLArrayDataServer and add unit tests GLArrayDataServer: - Add create*Mapped(..) variants for GPU mapped buffer usage w/o client buffers. - Fix API documentation (arguments) - Fix 'addGLSLSubArray(..)' - properly compute and pass 'subStrideB' in bytes to GLArrayDataWrapper ctor. - Add 'mapStorage(..)' and 'unmapStorage(..)' allowing to map the GPU buffer. GLArrayDataWrapper: - Fix getElementCount(): Consider stride in bytes and consider 'mappedElementCount' - getSizeInBytes(): Consider 'mappedElementCount' Tests: - Use new GLBase methods, e.g. getBoundBuffer(..) instead of glGetBoundBuffer(..) - TestMapBufferRead01NEWT: Validate GLBufferStorage (i.e. GLBufferObjectTracker) - Add RedSquareMappedES2 using GPU mapped buffer - Test w/ TestRedSquareES2NEWT, cmd-line 'mappedBuffers' - GearsES1 and GearsES2: Add GPU buffer mapping mode for all test cases - Add buffer validation mode, i.e. test whether GLBufferObjectTracker works properly. - Test w/ TestGearsES2NEWT, cmd-line 'mappedBuffers' - TestSharedContextVBOES2NEWT0, TestSharedContextVBOES2NEWT3: - Add GPU mapped buffers tests to validate GLBufferObjectTracker code path with shared GLContext across multiple threads.
| * Bug 942: GLBufferObjectTracker: Tracking GLBufferStorage accurately, ↵Sven Gothel2014-01-211-2/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | synchronized and secure [1/2] GLBufferSizeTracker becomes GLBufferObjectTracker and tracks the buffer's data store, GLBufferStorage, accurately, synchronized and secure. Synchronization is required, since the GLBufferStorage can be shared across many GLContext on multiple threads. This requires all GLBufferStorage lifecycle affecting GL functions to utilize synchronized GLBufferObjectTracker methods while passing a native GL-func callback. These GL functions are: - glBufferData, glBufferStorage (GL 4.4), glNamedBufferDataEXT Creating the GLBufferStorage object - glMapBuffer, glMapBufferRange, and their *Named*EXT variants - glUnmapBuffer, glUnmapNamedBufferEXT 'glDeleteBuffers' can simply notify the GLBufferObjectTracker No more HashMap is required to associate the mapped buffer address to the mapped ByteBuffer. GLBufferObjectTracker simply utilizes a buffer-name (int) -> GLBufferStorage map. +++ The security aspect shall be implemented by validating all arguments whether they match the required GL constraints, as well as validating tracked states like 'size'. The following functions will throw an GLException accordingly: - glBufferData, glNamedBufferDataEXT * @throws GLException if size is less-than zero * @throws GLException if a native GL-Error occurs - glBufferStorage (GL 4.4) * @throws GLException if size is less-or-eqaul zero * @throws GLException if a native GL-Error occurs - glMapBuffer, and it's *Named*EXT variant * @throws GLException if buffer is not bound to target * @throws GLException if buffer is not tracked * @throws GLException if buffer is already mapped * @throws GLException if buffer has invalid store size, i.e. less-than zero - glMapBufferRange, and it's *Named*EXT variant * @throws GLException if buffer is not bound to target * @throws GLException if buffer is not tracked * @throws GLException if buffer is already mapped * @throws GLException if buffer has invalid store size, i.e. less-than zero * @throws GLException if buffer mapping range does not fit, incl. offset - glMapBufferRange, and it's *Named*EXT variant Only clear mapped buffer reference of GLBufferStorage if native unmap was successful. Further more special error handling shall be applied to: - glMapBuffer, and it's *Named*EXT variant, glMapBuffer, and it's *Named*EXT variant - A zero GLBufferStorage size will avoid a native call and returns null - A null native mapping result indicating an error will not cause a GLException but returns null This allows the user to handle this case.
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