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ChangeLog.txt
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Pi3D Change Log
===============
Tim Skillman, Patrick Gaunt, Tom Ritchford
Date Amends
v2.49
2021-10-26 Bug fix: FixedString width not using Display.opengl.max_texture_size.value
found by `@jeffalperin`
v2.48
2021-10-01 Bug fix: Slice index for triangles wrong
found by `@chatcoda`
v2.47
2021-08-29 Bug fix: conway vertex shader has -0.5 pixel adjustment over width and
height. All shaders use highp precision.
Improvements: mac setup sorted out thanks to `@helgeerbe`
v2.46
2021-07-03 Bug fix: Resizing Textures when image dimensions were greater than
max_size was incorrect (typo and missing functionality)
v2.45
2021-04-30 Improvement: Found that texture widths can be any multiple of four
up to GL_MAX_TEXTURE_SIZE
v2.44
2021-03-30 Improvement: FixedString wrapping on pixel widths for accurate fitting
on screen
v2.43
2021-03-06 Bug fix: glGetError message cleaned up. Missing dependencies in setup.py
Improvement: PointText wrapping on pixel widths for accurate fitting
on screen
v2.42
2021-02-09 Bug fix: bump shaders work with orthographic cameras, integer
division in find devices corrected to //. Alpha value for discarding
fragments reduced to 1 part in 255 to avoid 'edges'
v2.41
2020-12-04 Bug fix: PointText now copes with multi-line strings and
can insert new lines at a given width
v2.40
2020-12-02 Bug fix: PointText needs to write over previous characters if the
string reduces in length (set uv to [0.0, 0.0])
v2.39
2020-12-01 Bug fix: PointText checks if char in Font rather than crashing
as it did previously.
v2.38
2020-08-28 Bug fix: Display.destroy() now doesn't get in a tangle trying to free
OpenGL textures, programs, buffers (i.e. it actually completes)
Improvement: masked_screenshot() can grab pixels from a rectangle of
the screen as a numpy array.
v2.37
2020-05-27 Bug fix: clear Texture.file_string as well as image if free_after_load
is set True. Also import of egl that was dragging in xlib functions and
stopped pi3d working on windows.
Improvement: Slice primitive in pi3d/shape which is like a slice of
a pie-chart. If colours specified with rgb values greater than 1.0 they
are treated as u8 0-255 values.
v2.36
2020-03-22 Bug fix: screen capture utility was incorrectly left in the form
used for debugging the distance texture mod. Also the general use of
logging.info() has been switched to logging.debug()
v2.35
2020-03-11 Improvement: OffscreenTexture saves distance texture as well as colour
which works on RPi4 and bigger computers but old versions have to use
Blur_legacy.py technique. Shader.create() checks for existing instances
of shaders with same name so saves recompiling on complicated set-ups.
PolygonLines creates lines from triangles giving neater ends and corners.
Reduced wildcard imports.
Bug fix: display picks up non-default :0 on some ubuntu.
v2.34
2019-11-16 Bug fix: move the changes in fragment shaders into the include file in
pi3d so minimise breaking shaders in pi3d_demos.
v2.33
2019-11-13 Improvement: use_glx argument for Display.create() allows X windows
to have transparent backgrounds. EGL function call arguments and
return types have been made more explicit. The shaders now have a
mechanism to convert the code into a form compatible with GL2.1,
GLES2.0 and GLES3.0 Display.create() detects the OpenGL/ES type and
version and saves this in Display.opengl.gl_id
This will probably be the last v2 release. v3 will use SDL2 as the
default window system rather than X directly. bcm will still be
enabled for Raspberry Pi without X desktop running.
v2.32
2019-07-22 Bug fix: points and lines now render on RPi4 along with utilities
that relied on this.
Improvement: The setting of the front face of the polygons to be
defined as clockwise now makes it clearer that the backs of faces
are culled by default. Also the OpenGL function call arguments have
been explicitly made using ctypes aliases to avoid confusion.
v2.31
2019-06-25 Improvement: Checking for new GL driver now not dependent on
glxinfo (mesa-utils)
v2.30
2019-06-24 Bug fix: New version of Raspbian no longer supports broadcom bcm_host
GL driver which is now detected and correct drivers loaded.
Improvement: x11 window name facility added. Billboard functionality
added to MergeShape
v2.29
2019-01-19 Improvement: Display.change_layer() function added and the layer
ref held in Display instance. This allows Display.resize() to work
correctly. Font now has grid_size argument to allow a smaller number
of larger format characters.
v2.28
2018-10-12 Improvement: The model loader for wavefront obj files now doesn't
load duplicate vertices as it would have to if glDrawArrays was
being used for rendering. glDrawElements is supposed to be faster
but the change is not measurable. It will reduce GPU memory by about
half.
v2.27 - no change from 2.26
v2.26
2018-07-29 Bug fix: Error (probably harmless) due to glEnable being used
with invalid GL_TEXTURE_2D argument.
Improvements: Phong type brightening added to uv and mat _reflect
shaders. Built-in mix() function used in fragment shaders (as opposed
to DIY formula). Places where import * used converted to explicitly
import the required tokens.
v2.25
2018-04-29 Bug fix: TextBlockColour.set_colour() not updating blue or alpha
values. Additional argument to Tube to allow it to not use
Shape._lathe() but make cylindrical uv mapping on outside and
inside and flat uv mapping on top and bottom.
v2.24
2018-04-09 Bug fix: Shape.rotate_to_direction() could occasionally not
work in python2
v2.23
2018-03-29 Bug fix: Camera.matrix_from_two_vectors() was mispelt, now has
alias from wrong spelling for backwards compatibility. Logging
gives reason for assertion failure if trying to do opengles
function not on main thread.
Improvements: Shape has utility functions rotate_to_direction()
transform_direction() and shallow_clone() allowing easier
manipulation of articulated parent-child arrangements.
v2.22
2017-11-09 Improvements: Slight speed improvements for PexParticles,
util/Graph class handles some work of creating fast graphs,
fog start distance can be controlled, MergeShape can create
multiple Buffers each with different draw properties.
v2.21
2017-09-05 Bug fixes: Rasbian stretch has renamed libGLES and libEGL so
this is now checked for in constants/__init__.py A change in
ctypes.WinDLL between python 2.7.12 and 2.7.13 means unicode
arguments have to be converted to str (patched back for 2.7.14!)
Improvements: Setting up Shape rotation matrix flags tidier.
properties Shape.xyz rxryrz sxsysz cxcycz added with setters
and getters.
v2.20
2017-07-27 Bug fixes: Removed use of numpy functions not yet available
in numpypy (pypy version). Some corrections of Log. Removal
of ctypes.byref() where passing an array (as already a pointer).
Some out of memory checking in Buffer.
v2.19
2017-04-20 Improvements: Multiple Textures can be used for ElevationMap,
Texture flip can do vertical, horizontal or both.
Bug fixes: event system limit of four devices in category kbd,
mouse or js increased to sixteen as it's possible to exceed
previous limit.
v2.18
2017-02-16 Improvements: Shadow system for Font and FixedString to allow
text to show up against variable backgrounds. Effectively adds
an outline.
v2.17
2017-01-24 Bug fixes: Logging system altered quite significantly. Within
the pi3d module logging is done using the 'vanilla' python
logging.getLogger(__name__) rather than the pi3d.Log system.
The handler is explicitly kept track of rather than letting
the basicConfig function generate a (potentially) duplicate
handler. Unfortunately this change will break existing code
that uses pi3d.Log
v2.16
2016-12-06 Bug fixes: pkg_resources.resource_string used for loading
shader instead (as well as) reading from file path. Handling
of detatched event streams. Context manager for Keyboard. Fix
for untextured Buffer.draw(). Wholesale specification of arg
and return types for egl and gles ctypes functions in attempt
to fix new intermittent bug when running on windows (failed to fix)
Improvements: PexParticles class added allowing pex files to
be read for rendering 2D particle effects using Points.
v2.15
2016-10-13 Bug fixes: Blending fonts with background pixels now doesn't
give darkening effect.
v2.14
2016-10-07 Improvements: Can be used without install PIL using compressed
numpy arrays for images. FixedString BUMP filter uses same code
as normal_map in Texture which also allows +ve or -ve factor
values
v2.13
2016-07-30 Bug fixes: windows 64 bit now works after specifying argument
types for ctypes functions for libEGL.dll. NB only the functions
that caused an error in RunTests were fixed so there could be
instances in future where others come back to bite.
Improvements: Camera now has an ``absolute=True`` argument (and
settable attribute) that determines whether rotations are done
relative to the starting rotation (determined by ``eye`` and ``at``
position vectors) or relative to the position the Camera is
currently rotated to. There is also an ``offset`` method that
allows Camera translation before rotation so the Camera behaves
in a similar way to the Shape system with matrix multiplicaiton
delayed until the first Shape.draw() There are also convenience
methods for calculating euler angles and correction rotations.
v2.12
2016-06-29 Bug fixes: hacked six module renamed to six_mod to avoid conflict.
Checking if samples can be used (can't with ANGLE on windows)
using try block. Rendering OffscreenTexture onto background with
alpha 1.0 now doesn't become transparrent.
Improvements: Buffer stores element_normals as well as smoothed
normals for quicker use in ElevationMap, in which class methods generally
improved to use numpy more efficiently and allow maps to be created
with non-uniform vertices (TODO: nothing actually does this yet).
Method in Texture allows normal image to be converted into a
normal map where luminance is used as height.
v2.11
2016-04-25 Improvements: screenshot() can be used to capture rendered
image to a numpy array (and not written to file) for use with
gtk or pyqt display for instance. More control over window features
when using pygame, thanks to @crashmatt (who did the creative
work for PointText and TextBlock in v2.8)
v2.10
2016-02-11 Bug fixes: GL_STENCIL_SIZE explicitly set in DisplayOpenGL
Mouse wheel movement doesn't crash when using pygame input -
and is available within pi3d.
Improvements: Various enhancements using different images as
textures allowing image types: GL_ALPHA, GL_LUMINANCE,
GL_LUMINANCE_ALPHA, GL_RGB and GL_RGBA the most appropriate
setting will be chosen from the file type or it can be overridden
by an argument to the Texture.__init__() Also the mipmap code
has been moved to the correct location to drastically reduce
memory requirements with the mipmap=False. Thanks to @swehner for
all his work on this
v2.9
2016-01-16 Bug fixes: glReadPixels fixed on linux and windows so Screenshot
and ClashTest work. glBufferData ctypes pointer fixed explicitly
to c_float allows large buffers to work.
Improvements: Optionally use setuptools, Mouse button more useful.
Options to free numpy array after image loaded, to use different
dispmanx layers and use different texture formats (apart from
GL_RGB and GL_RGBA), xbox event structure fix, X11 keyboard
release events stored.
v2.8
2015-11-07 some overdue, significant improvements to the way the light
vector is mapped to the plane of the tangent and cotangent vectors.
(needed for normal map effect). fixes to the Mouse and Keyboard
classes to make behaviour more similar across platforms Matt's
FastText and TextBlock classes and the uv_pointsprite shader
mods to the Font class so it can work either with the FastTest
or String classes following Peter Farrell's suggestion, a method
in Camera that does the reset() rotate() and position() and
returns the new location for a Camera moving over an ElevationMap
taking into account surface steepness.
v2.7
2015-08-14 Much improved shadow casting using depth mapping to OffScreenTexture.
Shape.lathe() patched so normal on first leg of path realistic,
also edges of shapes redefined in elements so line drawing
generally produces quads rather than triangles. Also texture
mapping in lathe corrected to use distance along path rather
than y position. Texture reflection in shaders fixed. Normals
in String fixed. Option to use pygame rather than X11 display,
mouse and keyboard to avoid having to run as root on linux.
v2.6
2015-07-02 Moved Shader specific code from Shape.draw() to Buffer.draw()
to allow different Shaders on parts of same shape. MergeShape
uses faster numpy RotateVec and copies other parts of Buffer
as well as arrays.
v2.5
2015-06-07 better loading of alternative shared objects i.e. for ubuntu MATE
StereoCam added.
v2.4
2015-06-06 some bug fixes w.r.t
init on ubuntu MATE
v2.3
2015-06-04 ubuntu MATE has different copies of EGL and GLESv2
also pygame needs closing on some windows systems
v2.2
2015-05-23 Windows dll requirement clarified. Keyboard on windows returns
same codes as X11 (more or less)
v2.1
2015-05-09 Texture.__init__ now copes with numpy array and a method has
been added to make only the required opengles function calls
for each texture change. This will now produce reasonable
video textues. Some fixes to running on windows for mouse and
tk argument to display creation.
v2.0
2015-04-28 Runs on windows using pygame and ANGLE dll files. Some speed
increases, use of numpy arrays in Camera, much better
reflection shader.
v1.14
2015-03-19 Fairly major change in the way python array data is passed to
libGLESv2 functions. Now generally uses ndarray.ctypes.data
rather than expanding values and creating a new ctypes array.
Lines class and line drawing added. anti-alias defaults off
as it breaks pi3d on vmware. Mouse option to use x11 pointer
as standard Mouse doesn't work on vmware.
v1.13
2015-02-05 Importable to Android using python-for-android. Mouse buttons
and thread stopping on program close. EGL anti-aliasing.
Texture pickling fixed.
v1.12
2014-12-22 Light can be defined as originating from a point. Shaders can
use #include to reduce duplication of code
v1.11
2014-11-24 bug fix PIL.Image.tobytes() does not work with the old python-
imaging. Texture can be passed an Image object instead of a
string path to an image file.
v1.10
2014-10-21 scenery functionality bug fixes.a utility class has been added
for background loading scenery as elevation maps and mergegroups.
Elevationmap.calcheight fixed and provides optional return of
normal vector. Shaders downgraded to consistant medium precesion
as this is limited on some platforms.
v1.9
2014-08-02 minor fixes pypi status moved to stable. String.quick_change
allows change of text without creating new String object
v1.8
2014-04-23 various fixes and enhancements. uv_reflect and mat_reflect
shaders now map reflected image correctly. Shapes have a list
of children that inherit transformations (i.e. finger child
of hand <- forearm <- upper-arm <- body etc) Sphere has argument
invert that makes normals face in for use as environment. More
flexible loading of wavefront obj files. Large sprites can be
made using an array of textures.
v1.7
2014-01-20 Minor fixes.
v1.6
2013-12-05 Simple GUI functionality. Minimal fixes. pi3d.util.Gui added
v1.5
2013-11-25 Bug fixes. InputEvents now works with python3. Buffer uses numpy
to calculate normals which would be much faster if this were
ever required for a large array of vertices.
v1.4
2013-10-16 Minor improvements and bug fixes. Camera init uses dimensions
from Display (as the default instance Camera did) rather than
guessing! Buffer now copes with intentionally missing normals
and texture coordinates as would often be the case for drawing
points or drawing a Model using self colour (and no texture OR
bump mapping) Pillow has now been correctly fixed but the
horrible fixes to get round the previous version will be left
in for a while.
v1.3
2013-09-19 Memory leak with Textures reappeared and fixed. Bug in Pillow
looks like it will not be fixed for 2.2.0 so added a hack to
Font. LodSprite allows segmentation of a simple plane for
texture sampling in the vertex shader. Additional Textures can
be passed to PostProcess __init__ for use by filter shaders.
Additional filters added to pi3d_demos
v1.2
2013-09-06 PostProcess added to allow effect shaders to be applied to
a rendered scene. OffScreenTexture system streamlined to take
out duplicated code and now works on X11 systems.
v1.1
2013-08-25 Split demos into their own repository and make pi3d structure
more in line with other packages. Put package on pypi to allow
installation using 'python setup.py install' or, ideally,
'pip install pi3d'
v1.0
2013-08-16 Support for other linux platforms using xlib and mesa. Runs under
python3 using six. Memory leaks fixed. Unicode, multiline and justified
String. DogFight demo using multiplayer networking (urllib to
MySQL php server) Point rendering option added. Shadow casting
onto ElevationMap. MergeShape takes array of Shapes so much
quicker for assemblies of large numbers of objects. Slideshow
demo loads resources in background thread. Fixed z position
bug in 2d_flat/Canvas system. Added alpha value as a uniform
variable to allow shaders to fade objects.
v0.8
2013-05-29 Switch to a non-zero-padded version number
v0.08
2013-02-08 Wholesale conversion to OpenGL ES2.0 mechanisms. As much as possible
of the existing functionality has been maintained though some classes
have not yet been implemented: [collisionMap, Missile] some are done
differently: [Draw, DrawString2D] The structure of the module has been
broken into a directory structure with smaller files generally containing
one class. Shaders implemented, Display class does more loop control,
file loading can be done on sub threads, TTF fonts can be used events
can handle all types of input such as joystick, gamepad etc, Building
2012-12-08 class and clashtest shader detect bumping into things.
v0.07
2012-12-08 Added splash screen to TK window (also user defineable)
2012-12-07 LoaderEgg draw needed to disableClientState(GL_COLOR_ARRAY) as
this affected the scene afterwards
2012-12-07 Added pi3d.FPS class that returns a Frames Per Second (FPS) count
2012-12-06 Found a problem with matrix stacking - a push would increase the
stack but a pop would not reduce it (i.e. constantly increasing)
Introduced a fixed stack method with a default of 20 deep pushes
(or user defined, e.g. mtrx=pi3d.matrix(50) for fifty pushes)
This should also speed things up a little as stack is pre-allocated
upon intialisation.
2012-12-06 Separated perspective and orthographic code into setPerspective and
setOrthographic functions so that a scene can interchange between them
v0.06
2012-11-29 Added Pi3D.DrawString2D which now renders text to a 2D orthographic view
2012-11-29 Added Pi3D.CollisionMap for checking collisions against objects.
Includes a collideLine method to see if a line of fire will hit an object
2012-11-28 Pi3D.LodDraw3 and LodDraw3xyz added to enable Level Of Detail rendering
for near, far and further models (or none at all)
2012-11-27 Loading textures checks for duplicates and uses preloaded textures
rather than loads them again
2012-11-26 Drawing models (LoadModel) can use offset,rotation,scale and centre
values added to their draw call (skips a matrix calculation)
2012-11-18 Modified loadECfiles to support other image types and an option not to
render the bottom image
2012-11-17 Added Pi3D.tkwin class for creating and handling TKinter window and events.
Much improved keyboard and mouse handling
2012-11-17 Modified Pi3D display class to resize the viewport and destroy correctly.
Includes a seperate method to create_surface
2012-11-17 Adopted Paddy Gaunt's fixes and additions to Pi3D module including
LoadModel (Obj format) and ClashTest
v0.05
2012-07-20 Add textures class so that textures can be deleted correctly
2012-07-20 Fixed a couple of bugs with latest release of Raspbian Wheezy
2012-07-12 Amended mergeShape to include shape's existing parameters
(x,y,z,rotations, scale)
2012-07-12 Added Paddy's fog effect
2012-07-12 ForestWalk2.py - I broke it Paddy! - left tiled texture in
2012-07-12 Modified ForestWalk.py to include new FACES type environment cube
2012-07-12 Added loadECfiles def in Pi3D to help load faces textures for
environment cube (FACES type)
2012-07-12 Made robotWalkabout.py that demostrates avatar viewing with an
offset camera
2012-07-12 Swapped height and depth parameters in pi3d.createCuboid - was
confusing with x,y,z ordering
2012-07-12 Updated clouds3d.py with Paddy's improved z-sorted version
2012-07-12 Added more environment cubes (FACES, HALFCROSS, CROSS) and added
Github Wiki page