griefith/test2
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

BGE VideoTexture: add depth buffer access to ImageViewport and ImageRender.

Browse Source 
2 new attributes to ImageViewport and ImageRender object:
depth: set to True to retrieve the depth buffer as an array of float
       (not suitable for texture source).
zbuff: set to True to retrieve the depth buffer as a grey scale pixel array
       (suitable for texture source).

A new mode 'F' is added to VideoTexture.imageToArray() to allow returning the image
buffer as a one dimensional array of float. This mode should only be used to retrieve
the depth buffer of ImageViewport and ImageRender objects.

Example:

viewport = VideoTexture.ImageViewport()
viewport.depth = True
depth = VideoTexture.imageToArray(viewport,'F')
# show depth of bottom left pixel
# 1.0 = infinite, 0.0 = on near clip plane.
print(depth[0])
This commit is contained in:
Benoit Bolsee
2012-10-20 22:28:44 +00:00
parent 7deb8d8a26
commit 4213eca5fc
7 changed files with 204 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
source/gameengine/VideoTexture/ImageBase.cpp
View File

@@ -49,6 +49,8 @@ extern "C" {
// constructor
ImageBase::ImageBase (bool staticSrc) : m_image(NULL), m_imgSize(0),
m_avail(false), m_scale(false), m_scaleChange(false), m_flip(false),
m_zbuff(false),
m_depth(false),
m_staticSources(staticSrc), m_pyfilter(NULL)
{
m_size[0] = m_size[1] = 0;
@@ -402,6 +404,18 @@ PyObject *Image_getImage (PyImage *self, char * mode)
{
buffer = BGL_MakeBuffer( GL_BYTE, 1, &dimensions, image);
}
else if (!strcasecmp(mode, "F"))
{
// this mode returns the image as an array of float.
// This makes sense ONLY for the depth buffer:
// source = VideoTexture.ImageViewport()
// source.depth = True
// depth = VideoTexture.imageToArray(source, 'F')
// adapt dimension from byte to float
dimensions /= sizeof(float);
buffer = BGL_MakeBuffer( GL_FLOAT, 1, &dimensions, image);
}
else
{
int i, c, ncolor, pixels;
@@ -532,6 +546,52 @@ int Image_setFlip (PyImage *self, PyObject *value, void *closure)
return 0;
}
// get zbuff
PyObject * Image_getZbuff (PyImage * self, void * closure)
{
if (self->m_image != NULL && self->m_image->getZbuff()) Py_RETURN_TRUE;
else Py_RETURN_FALSE;
}
// set zbuff
int Image_setZbuff (PyImage * self, PyObject * value, void * closure)
{
// check parameter, report failure
if (value == NULL || !PyBool_Check(value))
{
PyErr_SetString(PyExc_TypeError, "The value must be a bool");
return -1;
}
// set scale
if (self->m_image != NULL) self->m_image->setZbuff(value == Py_True);
// success
return 0;
}
// get depth
PyObject * Image_getDepth (PyImage * self, void * closure)
{
if (self->m_image != NULL && self->m_image->getDepth()) Py_RETURN_TRUE;
else Py_RETURN_FALSE;
}
// set depth
int Image_setDepth (PyImage * self, PyObject * value, void * closure)
{
// check parameter, report failure
if (value == NULL || !PyBool_Check(value))
{
PyErr_SetString(PyExc_TypeError, "The value must be a bool");
return -1;
}
// set scale
if (self->m_image != NULL) self->m_image->setDepth(value == Py_True);
// success
return 0;
}
// get filter source object
PyObject *Image_getSource (PyImage *self, PyObject *args)