OpenVG™ is a royalty-free, cross-platform API that provides a low-level hardware acceleration interface for vector graphics libraries such as Flash and SVG.
Questions tagged [openvg]
29 questions
1
vote
1 answer
Accessing VGImage Data
Using OpenVG 1.1 I am trying to dump a VGImage to a file to confirm things are working but I am unsure how to access the raw RGBA data of the VGImage. Using vgReadPixels to capture the data to a char array does somewhat work but before I spend much…
Sébastien Taylor
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1
vote
1 answer
How to create global instance of objects that require a context?
I am attempting to write a C++ wrapper of OpenVG, which is very Open-GL like in its design.
here is a simple wrapper for a path handle:
class Path {
VGPath handle;
public:
Path() :
…
lezebulon
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0
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1 answer
OpenVG on wince: nothing painted on screen (example application Star.exe)
Has anyone got the openvg example (star.exe) running on a wince target successfully? I’ve tried it but failed – nothing was painted on screen except for an empty window. Below is what I’ve done for it.
Environment:
Qt 4.7.4
Wince 6.0
An SDK with…
user952398
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0
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1 answer
Can not connect a Surface eglCreatePbufferFromClientBuffer
VGint num_config;
EGLint value;
EGLBoolean ret;
m_BackLayerBuffer = vgCreateImage(SGA_DIS_FMT_RGB565, LCD_WIDTH, LCD_HEIGHT, VG_IMAGE_QUALITY_NONANTIALIASED);
vgClearImage(m_BackLayerBuffer, 0, 0, LCD_WIDTH, LCD_HEIGHT);
…
Runner
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0
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0 answers
How to rasterize a line in memory without displaying rendered image?
I am trying to use GPGPU for some (scientific) calculations.
Essentially, I need to rasterize (with antialiasing) a (bountiful of) line(s) cutting a grid, and save this data in a sparse format (that will later be handled by CUDA or alike). I believe…
Meligordman
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0
votes
1 answer
Raspberry Pi OpenVG C/C++
I have two question about OpenVG
I'm going to plot a chart using OpenVG. I read documentation and I can't find how to write a single pixel (something like putpixel in Pascal). I found one solution: draw a short line (1 pix line) but is not…
0
votes
1 answer
Rotated text with OpenVG
I've noticed that the OpenVG transformation matrix is ignored by the text rendering routine at all and I cannot control the text position with it manually with VG_GLYPH_ORIGIN parameter.
I'm implementing a scene graph. I found out that I can use…
Kos
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Does Intel Atom support OpenVG?
Some time ago, I read some rumors on hardware implementation of OpenVG in Intel Atoms of a "new ganeration". Now I cannot find any evidence. So, is there at least some plans to support OpenVG at all?
noober
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why do I need to use OpenVG in my Android App?
I want to scan a fingerprint. Also I have the device SDK provided for the manufacturer and there is an example inside of how to use the functions. When I run the example code suddenly it crashes while saying: "libOpenVG.so not found"
There is…
Ruben Cedeño
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1 answer
Unable to Draw in C++ on Raspberry Pi
I have, thanks to some help, managed to get the program below to compile and run but although it keeps on chugging away I cannot see anything drawn on the Pi's screen.
I don't think that it is a problem unique to the use of openvg and ajstarks code…
user867358
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0
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0 answers
ios + OpenGL/OpenVG/Core Graphics/cocos2d. The most optimal algorithm of checking if a point is inside a region?
I use the algorithm of checking if a point is inside a region:
draw a point with color1
draw a region with color2
check if point still has color1
So the main problem for me is the last step.
I know it is possible to do this with core graphics but…
user2083364
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0
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2 answers
c++. Convert drawing bezier curve calls with 2 points defined to calls with 3 points defined?
link to theory
C and c mean curves with 3 points defined.
S and s mean curves with 2 points defined.
The relevant functions are (monkSVG + monkVG/openVG):
void OpenVG_SVGHandler::onPathCubic( float x1, float y1, float x2, float y2, float x3,…
user2083364
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0
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3 answers
How can I import SVG in an OpenVG context?
I have a C program that uses OpenVG to display vector animations. All the objects are created by writting VG functions again and again... I work with an artist who can provides me SVG files of vectorial pictures. So my objective is to display these…
caymard
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Best current OpenVG implementation?
Possible Duplicate:
Best OpenVG implementation?
I am aware this is a duplicate of :
OpenVG implementation?
but the page hasn't been updated in 2 years.
Basically I'm looking for a decently fast implementation of OpenVG that works on top of…
lezebulon
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