[Bf-blender-cvs] [a2bebb0] decklink: BGE: asynchronous render with ImageRender new render() method
Benoit Bolsee
noreply at git.blender.org
Tue Nov 3 17:41:19 CET 2015
Commit: a2bebb088095343af9af3a4799d46b6328ae84d7
Author: Benoit Bolsee
Date: Tue Nov 3 17:37:50 2015 +0100
Branches: decklink
https://developer.blender.org/rBa2bebb088095343af9af3a4799d46b6328ae84d7
BGE: asynchronous render with ImageRender new render() method
usage:
ir = bge.texture.ImageRender(..)
ir.render()
ir.refresh(buffer)
===================================================================
M source/gameengine/Rasterizer/RAS_IOffScreen.h
M source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp
M source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.h
M source/gameengine/VideoTexture/ImageRender.cpp
M source/gameengine/VideoTexture/ImageRender.h
===================================================================
diff --git a/source/gameengine/Rasterizer/RAS_IOffScreen.h b/source/gameengine/Rasterizer/RAS_IOffScreen.h
index 0acf1bb..6063d90 100644
--- a/source/gameengine/Rasterizer/RAS_IOffScreen.h
+++ b/source/gameengine/Rasterizer/RAS_IOffScreen.h
@@ -46,6 +46,10 @@ struct Image;
class RAS_IOffScreen
{
public:
+ enum RAS_OFS_BIND_MODE {
+ RAS_OFS_BIND_RENDER = 0,
+ RAS_OFS_BIND_READ,
+ };
int m_width;
int m_height;
int m_samples;
@@ -54,7 +58,7 @@ public:
virtual bool Create(int width, int height, int samples) = 0;
virtual void Destroy() = 0;
- virtual void Bind() = 0;
+ virtual void Bind(RAS_OFS_BIND_MODE mode) = 0;
virtual void Blit() = 0;
virtual void Unbind() = 0;
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp
index bde6764..decf921 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp
+++ b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.cpp
@@ -133,11 +133,14 @@ void RAS_OpenGLOffScreen::Destroy()
m_samples = 0;
}
-void RAS_OpenGLOffScreen::Bind()
+void RAS_OpenGLOffScreen::Bind(RAS_OFS_BIND_MODE mode)
{
if (m_ofs)
{
- GPU_offscreen_bind(m_ofs, false);
+ if (mode == RAS_OFS_BIND_RENDER || !m_blitfbo)
+ GPU_offscreen_bind(m_ofs, false);
+ else
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, m_blitfbo);
m_bound = true;
}
}
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.h b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.h
index 63ac02f..86c6dce 100644
--- a/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.h
+++ b/source/gameengine/Rasterizer/RAS_OpenGLRasterizer/RAS_OpenGLOffScreen.h
@@ -44,7 +44,7 @@ public:
bool Create(int width, int height, int samples);
void Destroy();
- void Bind();
+ void Bind(RAS_OFS_BIND_MODE mode);
void Blit();
void Unbind();
};
diff --git a/source/gameengine/VideoTexture/ImageRender.cpp b/source/gameengine/VideoTexture/ImageRender.cpp
index e3e3551..776cae1 100644
--- a/source/gameengine/VideoTexture/ImageRender.cpp
+++ b/source/gameengine/VideoTexture/ImageRender.cpp
@@ -68,6 +68,7 @@ ExpDesc MirrorTooSmallDesc(MirrorTooSmall, "Mirror is too small");
ImageRender::ImageRender (KX_Scene *scene, KX_Camera * camera, PyRASOffScreen * offscreen) :
ImageViewport(offscreen),
m_render(true),
+ m_done(false),
m_scene(scene),
m_camera(camera),
m_owncamera(false),
@@ -133,24 +134,26 @@ void ImageRender::setBackgroundFromScene (KX_Scene *scene)
void ImageRender::calcViewport (unsigned int texId, double ts, unsigned int format)
{
// render the scene from the camera
- if (!Render())
+ if (!m_done)
{
- m_avail = false;
- return;
+ if (!Render())
+ {
+ return;
+ }
+ }
+ else if (m_offscreen)
+ {
+ m_offscreen->ofs->Bind(RAS_IOffScreen::RAS_OFS_BIND_READ);
}
-
- // In case multisample is active, blit the FBO
- if (m_offscreen)
- m_offscreen->ofs->Blit();
// get image from viewport (or FBO)
ImageViewport::calcViewport(texId, ts, format);
- // restore OpenGL state
- m_canvas->EndFrame();
if (m_offscreen)
{
m_offscreen->ofs->Unbind();
}
+ // so that next time we render again
+ m_done = false;
}
bool ImageRender::Render()
@@ -238,7 +241,7 @@ bool ImageRender::Render()
if (m_offscreen)
{
// bind the fbo and set the viewport to full size
- m_offscreen->ofs->Bind();
+ m_offscreen->ofs->Bind(RAS_IOffScreen::RAS_OFS_BIND_RENDER);
// this is needed to stop crashing in canvas check
m_canvas->UpdateViewPort(0, 0, m_offscreen->ofs->GetWidth(), m_offscreen->ofs->GetHeight());
}
@@ -345,10 +348,25 @@ bool ImageRender::Render()
// restore the canvas area now that the render is completed
m_canvas->GetWindowArea() = area;
+ m_canvas->EndFrame();
+ // In case multisample is active, blit the FBO
+ if (m_offscreen)
+ m_offscreen->ofs->Blit();
+ // remember that we have done render
+ m_done = true;
+ // the image is not available at this stage
+ m_avail = false;
return true;
}
+void ImageRender::Unbind()
+{
+ if (m_offscreen)
+ {
+ m_offscreen->ofs->Unbind();
+ }
+}
// cast Image pointer to ImageRender
inline ImageRender * getImageRender (PyImage *self)
@@ -411,6 +429,24 @@ static int ImageRender_init(PyObject *pySelf, PyObject *args, PyObject *kwds)
return 0;
}
+// refresh image
+static PyObject *ImageRender_render(PyImage *self)
+{
+ ImageRender *imageRender = getImageRender(self);
+
+ if (!imageRender)
+ {
+ PyErr_SetString(PyExc_TypeError, "Incomplete ImageRender() object");
+ return NULL;
+ }
+ if (!imageRender->Render())
+ {
+ Py_RETURN_FALSE;
+ }
+ imageRender->Unbind();
+ Py_RETURN_TRUE;
+}
+
// get background color
static PyObject *getBackground (PyImage *self, void *closure)
@@ -450,6 +486,7 @@ static int setBackground(PyImage *self, PyObject *value, void *closure)
static PyMethodDef imageRenderMethods[] =
{ // methods from ImageBase class
{"refresh", (PyCFunction)Image_refresh, METH_VARARGS, "Refresh image - invalidate its current content after optionally transferring its content to a target buffer"},
+ {"render", (PyCFunction)ImageRender_render, METH_NOARGS, "Render scene - run before refresh() to performs asynchronous render"},
{NULL}
};
// attributes structure
@@ -640,6 +677,7 @@ static PyGetSetDef imageMirrorGetSets[] =
ImageRender::ImageRender (KX_Scene *scene, KX_GameObject *observer, KX_GameObject *mirror, RAS_IPolyMaterial *mat) :
ImageViewport(),
m_render(false),
+ m_done(false),
m_scene(scene),
m_offscreen(NULL),
m_observer(observer),
diff --git a/source/gameengine/VideoTexture/ImageRender.h b/source/gameengine/VideoTexture/ImageRender.h
index 5b7c789..cc4c862 100644
--- a/source/gameengine/VideoTexture/ImageRender.h
+++ b/source/gameengine/VideoTexture/ImageRender.h
@@ -64,10 +64,16 @@ public:
float getClip (void) { return m_clip; }
/// set whole buffer use
void setClip (float clip) { m_clip = clip; }
+ /// render frame (public so that it is accessible from python)
+ bool Render();
+ /// in case fbo is used, method to unbind
+ void Unbind();
protected:
/// true if ready to render
bool m_render;
+ /// is render done already?
+ bool m_done;
/// rendered scene
KX_Scene * m_scene;
/// camera for render
@@ -103,9 +109,6 @@ protected:
/// render 3d scene to image
virtual void calcViewport (unsigned int texId, double ts, unsigned int format);
- bool Render();
- void SetupRenderFrame(KX_Scene *scene, KX_Camera* cam);
- void RenderFrame(KX_Scene* scene, KX_Camera* cam);
void setBackgroundFromScene(KX_Scene *scene);
void SetWorldSettings(KX_WorldInfo* wi);
};
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