def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
debug("GL Pixmap backing size: %d x %d, drawable=%s", w, h, drawable)
if not drawable:
return None
if not self.gl_setup:
# Ask GL to send us all debug messages
if GL_DEBUG_OUTPUT and gl_debug_callback and glInitDebugKHR() == True:
glEnable(GL_DEBUG_OUTPUT)
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS)
glDebugMessageCallback(gl_debug_callback, None)
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, None, GL_TRUE)
# Initialize string_marker GL debugging extension if available
if glInitStringMarkerGREMEDY and glInitStringMarkerGREMEDY() == True:
log.info("Extension GL_GREMEDY_string_marker available. Will output detailed information about each frame.")
else:
# General case - running without debugger, extension not available
glStringMarkerGREMEDY = None
# Initialize frame_terminator GL debugging extension if available
if glInitFrameTerminatorGREMEDY and glInitFrameTerminatorGREMEDY() == True:
glFrameTerminatorGREMEDY = None
self.gl_marker("Initializing GL context for window size %d x %d" % (w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
#TODO glEnableClientState(GL_VERTEX_ARRAY)
#TODO glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear to white
glClearColor(1.0, 1.0, 1.0, 1.0)
# Default state is good for YUV painting:
# - fragment program enabled
# - render to offscreen FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(5)
debug("textures for wid=%s of size %s : %s", self.wid, self.size, self.textures)
if self.offscreen_fbo is None:
self.offscreen_fbo = glGenFramebuffers(1)
# Define empty FBO texture and set rendering to FBO
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_BYTE, 0)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
self.gl_setup = True
return drawable
def gl_init(self):
#must be called within a context!
#performs init if needed
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
w, h = self.size
self.gl_marker("Initializing GL context for window size %d x %d", w, h)
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Mesa docs claim: this hint can improve the speed of texturing
#when perspective-correct texture coordinate interpolation isn't needed,
#such as when using a glOrtho() projection:
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
# Define empty FBO texture and set rendering to FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, self.texture_pixel_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
log("%s.gl_init() GL Pixmap backing size: %d x %d, drawable=%s", self, w, h, drawable)
if not drawable:
return None
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
self.gl_marker("Initializing GL context for window size %d x %d" % (w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
# Define empty FBO texture and set rendering to FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, self.texture_pixel_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
return drawable
def present_fbo(self, drawable):
self.gl_marker("Presenting FBO on screen for drawable %s" % drawable)
assert drawable
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
if self._has_alpha:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._has_alpha:
# support alpha channel if present:
glEnable(GL_BLEND)
glBlendEquationSeparate(GL_FUNC_ADD, GL_FUNC_ADD)
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ZERO)
w, h = self.size
glBegin(GL_QUADS)
glTexCoord2i(0, h)
glVertex2i(0, 0)
glTexCoord2i(0, 0)
glVertex2i(0, h)
glTexCoord2i(w, 0)
glVertex2i(w, h)
glTexCoord2i(w, h)
glVertex2i(w, 0)
glEnd()
# Show the backbuffer on screen
if drawable.is_double_buffered():
debug("%s.present_fbo() swapping buffers now", self)
drawable.swap_buffers()
# Clear the new backbuffer to illustrate that its contents are undefined
glClear(GL_COLOR_BUFFER_BIT)
else:
glFlush()
if self._has_alpha:
glDisable(GL_BLEND)
self.gl_frame_terminator()
self.unset_rgb_paint_state()
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
debug("%s.present_fbo() done", self)
def present_fbo(self):
drawable = self.gl_init()
debug("present_fbo() drawable=%s", drawable)
self.gl_marker("Presenting FBO on screen")
if not drawable:
return
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
# Draw FBO texture on screen
self.set_rgb24_paint_state()
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
w, h = self.size
glBegin(GL_QUADS)
glTexCoord2i(0, h)
glVertex2i(0, 0)
glTexCoord2i(0, 0)
glVertex2i(0, h)
glTexCoord2i(w, 0)
glVertex2i(w, h)
glTexCoord2i(w, h)
glVertex2i(w, 0)
glEnd()
# Show the backbuffer on screen
if drawable.is_double_buffered():
debug("SWAPPING BUFFERS NOW")
drawable.swap_buffers()
# Clear the new backbuffer to illustrate that its contents are undefined
glClear(GL_COLOR_BUFFER_BIT)
else:
glFlush()
self.gl_frame_terminator()
self.unset_rgb24_paint_state()
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
drawable.gl_end()
def do_present_fbo(self):
bw, bh = self.size
ww, wh = self.render_size
rect_count = len(self.pending_fbo_paint)
if self.is_double_buffered() or bw!=ww or bh!=wh:
#refresh the whole window:
rectangles = ((0, 0, bw, bh), )
else:
#paint just the rectangles we have accumulated:
rectangles = self.pending_fbo_paint
self.pending_fbo_paint = []
log("do_present_fbo: painting %s", rectangles)
if SAVE_BUFFERS:
self.save_FBO()
self.gl_marker("Presenting FBO on screen")
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0)
left, top, right, bottom = self.offsets
#viewport for clearing the whole window:
glViewport(0, 0, left+ww+right, top+wh+bottom)
if self._alpha_enabled:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# black, no alpha:
glClearColor(0.0, 0.0, 0.0, 1.0)
if left or top or right or bottom:
glClear(GL_COLOR_BUFFER_BIT)
#from now on, take the offsets into account:
glViewport(left, top, ww, wh)
target = GL_TEXTURE_RECTANGLE_ARB
if ww!=bw or wh!=bh:
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
# Draw FBO texture on screen
glEnable(target) #redundant - done in rgb paint state
glBindTexture(target, self.textures[TEX_FBO])
if self._alpha_enabled:
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE)
glBegin(GL_QUADS)
for x,y,w,h in rectangles:
#note how we invert coordinates..
tx1, ty1, tx2, ty2 = x, bh-y, x+w, bh-y-h
vx1, vy1, vx2, vy2 = x, y, x+w, y+h
glTexCoord2i(tx1, ty1)
glVertex2i(vx1, vy1) #top-left of window viewport
glTexCoord2i(tx1, ty2)
glVertex2i(vx1, vy2) #bottom-left of window viewport
glTexCoord2i(tx2, ty2)
glVertex2i(vx2, vy2) #bottom-right of window viewport
glTexCoord2i(tx2, ty1)
glVertex2i(vx2, vy1) #top-right of window viewport
glEnd()
glBindTexture(target, 0)
glDisable(target)
if self.pointer_overlay:
self.draw_pointer()
if self.paint_spinner:
#add spinner:
self.draw_spinner()
if self.border and self.border.shown:
self.draw_border()
# Show the backbuffer on screen
glFlush()
self.gl_show(rect_count)
self.gl_frame_terminator()
#restore pbo viewport
glViewport(0, 0, bw, bh)
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
log("%s(%s, %s)", glBindFramebuffer, GL_FRAMEBUFFER, self.offscreen_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.do_present_fbo() done", self)
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
debug("%s.gl_init() GL Pixmap backing size: %d x %d, drawable=%s", self, w, h, drawable)
if not drawable:
return None
if not self.gl_setup:
#ensure python knows which scope we're talking about:
global glInitStringMarkerGREMEDY, glStringMarkerGREMEDY
global glInitFrameTerminatorGREMEDY, glFrameTerminatorGREMEDY
# Ask GL to send us all debug messages
if GL_DEBUG_OUTPUT and gl_debug_callback and glInitDebugKHR() == True:
glEnable(GL_DEBUG_OUTPUT)
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS)
glDebugMessageCallback(gl_debug_callback, None)
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, None, GL_TRUE)
# Initialize string_marker GL debugging extension if available
if glInitStringMarkerGREMEDY and glInitStringMarkerGREMEDY() == True:
log.info("Extension GL_GREMEDY_string_marker available. Will output detailed information about each frame.")
else:
# General case - running without debugger, extension not available
glStringMarkerGREMEDY = None
#don't bother trying again for another window:
glInitStringMarkerGREMEDY = None
# Initialize frame_terminator GL debugging extension if available
if glInitFrameTerminatorGREMEDY and glInitFrameTerminatorGREMEDY() == True:
log.info("Enabling GL frame terminator debugging.")
else:
glFrameTerminatorGREMEDY = None
#don't bother trying again for another window:
glInitFrameTerminatorGREMEDY = None
self.gl_marker("Initializing GL context for window size %d x %d" % (w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
#TODO glEnableClientState(GL_VERTEX_ARRAY)
#TODO glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear to white
glClearColor(1.0, 1.0, 1.0, 1.0)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(5)
debug("%s.gl_init() textures of size %s : %s", self, self.size, self.textures)
if self.offscreen_fbo is None:
self.offscreen_fbo = glGenFramebuffers(1)
# Define empty FBO texture and set rendering to FBO
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.shaders = [ 1, 2 ]
glGenProgramsARB(2, self.shaders)
for progid, progstr in ((0, YUV2RGB_shader), (1, RGBP2RGB_shader)):
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[progid])
glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, len(progstr), progstr)
err = glGetString(GL_PROGRAM_ERROR_STRING_ARB)
if err:
#FIXME: maybe we should do something else here?
log.error(err)
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[0])
self.gl_setup = True
return drawable
def gl_init(self):
#must be called within a context!
#performs init if needed
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
w, h = self.size
self.gl_marker("Initializing GL context for window size %s, backing size %s", self.render_size, self.size)
# Initialize viewport and matrices for 2D rendering
x, _, _, y = self.offsets
glViewport(x, y, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Mesa docs claim: this hint can improve the speed of texturing
#when perspective-correct texture coordinate interpolation isn't needed,
#such as when using a glOrtho() projection:
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
glDisable(GL_SCISSOR_TEST)
glDisable(GL_LIGHTING)
glDisable(GL_DITHER)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
#upload pixel buffer full of zeroes:
empty_buf = b"\0"*(w*h*4)
pixel_data = self.pixels_for_upload(empty_buf)[1]
# Define empty tmp FBO
target = GL_TEXTURE_RECTANGLE_ARB
glBindTexture(target, self.textures[TEX_TMP_FBO])
set_texture_level(target)
glTexImage2D(target, 0, self.internal_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, pixel_data)
glBindFramebuffer(GL_FRAMEBUFFER, self.tmp_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, self.textures[TEX_TMP_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Define empty FBO texture and set rendering to FBO
glBindTexture(target, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
set_texture_level(target)
glTexImage2D(target, 0, self.internal_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, pixel_data)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
glBindTexture(target, 0)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
def do_scroll_paints(self, scrolls, flush=0, callbacks=[]):
log("do_scroll_paints%s", (scrolls, flush))
context = self.gl_context()
if not context:
log("%s.do_scroll_paints(..) no context!", self)
fire_paint_callbacks(callbacks, False, "no opengl context")
return
def fail(msg):
log.error("Error: %s", msg)
fire_paint_callbacks(callbacks, False, msg)
with context:
bw, bh = self.size
#paste from offscreen to tmp with delta offset:
glBindFramebuffer(GL_READ_FRAMEBUFFER, self.offscreen_fbo)
target = GL_TEXTURE_RECTANGLE_ARB
glEnable(target)
glBindTexture(target, self.textures[TEX_FBO])
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, self.textures[TEX_FBO], 0)
glReadBuffer(GL_COLOR_ATTACHMENT0)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, self.tmp_fbo)
glBindTexture(target, self.textures[TEX_TMP_FBO])
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, target, self.textures[TEX_TMP_FBO], 0)
glDrawBuffer(GL_COLOR_ATTACHMENT1)
#copy current fbo:
glBlitFramebuffer(0, 0, bw, bh,
0, 0, bw, bh,
GL_COLOR_BUFFER_BIT, GL_NEAREST)
for x,y,w,h,xdelta,ydelta in scrolls:
if abs(xdelta)>=bw:
fail("invalid xdelta value: %i, backing width is %i" % (xdelta, bw))
continue
if abs(ydelta)>=bh:
fail("invalid ydelta value: %i, backing height is %i" % (ydelta, bh))
continue
if ydelta==0 and xdelta==0:
fail("scroll has no delta!")
continue
if w<=0 or h<=0:
fail("invalid scroll area size: %ix%i" % (w, h))
continue
#these should be errors,
#but desktop-scaling can cause a mismatch between the backing size
#and the real window size server-side.. so we clamp the dimensions instead
if x+w>bw:
w = bw-x
if y+h>bh:
h = bh-y
if x+w+xdelta>bw:
w = bw-x-xdelta
if w<=0:
continue #nothing left!
if y+h+ydelta>bh:
h = bh-y-ydelta
if h<=0:
continue #nothing left!
if x+xdelta<0:
fail("horizontal scroll by %i: rectangle %s overflows the backing buffer size %s" % (xdelta, (x, y, w, h), self.size))
continue
if y+ydelta<0:
fail("vertical scroll by %i: rectangle %s overflows the backing buffer size %s" % (ydelta, (x, y, w, h), self.size))
continue
#opengl buffer is upside down, so we must invert Y coordinates: bh-(..)
glBlitFramebuffer(x, bh-y, x+w, bh-(y+h),
x+xdelta, bh-(y+ydelta), x+w+xdelta, bh-(y+h+ydelta),
GL_COLOR_BUFFER_BIT, GL_NEAREST)
self.paint_box("scroll", True, x+xdelta, y+ydelta, x+w+xdelta, y+h+ydelta)
glFlush()
#now swap references to tmp and offscreen so tmp becomes the new offscreen:
tmp = self.offscreen_fbo
self.offscreen_fbo = self.tmp_fbo
self.tmp_fbo = tmp
tmp = self.textures[TEX_FBO]
self.textures[TEX_FBO] = self.textures[TEX_TMP_FBO]
self.textures[TEX_TMP_FBO] = tmp
#restore normal paint state:
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, self.textures[TEX_FBO], 0)
glBindFramebuffer(GL_READ_FRAMEBUFFER, self.offscreen_fbo)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, self.offscreen_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glBindTexture(target, 0)
glDisable(target)
fire_paint_callbacks(callbacks, True)
self.present_fbo(0, 0, bw, bh, flush)
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
log("%s.gl_init() GL Pixmap backing size: %d x %d, drawable=%s", self,
w, h, drawable)
if not drawable:
return None
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
self.gl_marker("Initializing GL context for window size %d x %d" %
(w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
# Define empty FBO texture and set rendering to FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0,
self.texture_pixel_format, w, h, 0,
self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_RECTANGLE_ARB,
self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,
self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
return drawable
def present_fbo(self, encoding, is_delta, x, y, w, h):
if not self.paint_screen:
return
self.gl_marker("Presenting FBO on screen")
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
if self._alpha_enabled:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
ww, wh = self.size
if self.glconfig.is_double_buffered():
#refresh the whole window:
x, y = 0, 0
w, h = ww, wh
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._alpha_enabled:
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE)
glBegin(GL_QUADS)
#note how we invert coordinates..
glTexCoord2i(x, wh-y)
glVertex2i(x, y) #top-left of window viewport
glTexCoord2i(x, wh-y-h)
glVertex2i(x, y+h) #bottom-left of window viewport
glTexCoord2i(x+w, wh-y-h)
glVertex2i(x+w, y+h) #bottom-right of window viewport
glTexCoord2i(x+w, wh-y)
glVertex2i(x+w, y) #top-right of window viewport
glEnd()
glDisable(GL_TEXTURE_RECTANGLE_ARB)
#show region being painted:
if OPENGL_PAINT_BOX:
glLineWidth(1)
if is_delta:
glLineStipple(1, 0xf0f0)
glEnable(GL_LINE_STIPPLE)
glBegin(GL_LINE_LOOP)
color = BOX_COLORS.get(encoding, _DEFAULT_BOX_COLOR)
glColor4f(*color)
for px,py in ((x, y), (x+w, y), (x+w, y+h), (x, y+h)):
glVertex2i(px, py)
glEnd()
if is_delta:
glDisable(GL_LINE_STIPPLE)
if self.paint_spinner:
#add spinner:
dim = min(ww/3.0, wh/3.0)
t = time.time()
count = int(t*4.0)
bx = ww//2
by = wh//2
for i in range(8): #8 lines
glBegin(GL_POLYGON)
c = cv.trs[count%8][i]
glColor4f(c, c, c, 1)
mi1 = math.pi*i/4-math.pi/16
mi2 = math.pi*i/4+math.pi/16
glVertex2i(int(bx+math.sin(mi1)*10), int(by+math.cos(mi1)*10))
glVertex2i(int(bx+math.sin(mi1)*dim), int(by+math.cos(mi1)*dim))
glVertex2i(int(bx+math.sin(mi2)*dim), int(by+math.cos(mi2)*dim))
glVertex2i(int(bx+math.sin(mi2)*10), int(by+math.cos(mi2)*10))
glEnd()
#if desired, paint window border
if self.border and self.border.shown:
#double size since half the line will be off-screen
glLineWidth(self.border.size*2)
glBegin(GL_LINE_LOOP)
glColor4f(self.border.red, self.border.green, self.border.blue, self.border.alpha)
for px,py in ((0, 0), (ww, 0), (ww, wh), (0, wh)):
glVertex2i(px, py)
glEnd()
# Show the backbuffer on screen
self.gl_show()
self.gl_frame_terminator()
self.unset_rgb_paint_state()
log("%s(%s, %s)", glBindFramebuffer, GL_FRAMEBUFFER, self.offscreen_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.present_fbo() done", self)
def present_fbo(self, drawable):
if not self.paint_screen:
return
self.gl_marker("Presenting FBO on screen for drawable %s" % drawable)
assert drawable
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
if self._has_alpha:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
w, h = self.size
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._has_alpha and bool(glEnablei):
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glBegin(GL_QUADS)
glTexCoord2i(0, h)
glVertex2i(0, 0)
glTexCoord2i(0, 0)
glVertex2i(0, h)
glTexCoord2i(w, 0)
glVertex2i(w, h)
glTexCoord2i(w, h)
glVertex2i(w, 0)
glEnd()
#if desired, paint window border
if self.border and self.border.shown:
glDisable(GL_TEXTURE_RECTANGLE_ARB)
#double size since half the line will be off-screen
glLineWidth(self.border.size * 2)
glColor4f(self.border.red, self.border.green, self.border.blue,
self.border.alpha)
glBegin(GL_LINE_LOOP)
for x, y in ((0, 0), (w, 0), (w, h), (0, h)):
glVertex2i(x, y)
glEnd()
#reset color to default
glColor4f(1.0, 1.0, 1.0, 1.0)
# Show the backbuffer on screen
if drawable.is_double_buffered():
log("%s.present_fbo() swapping buffers now", self)
drawable.swap_buffers()
# Clear the new backbuffer to illustrate that its contents are undefined
glClear(GL_COLOR_BUFFER_BIT)
else:
glFlush()
self.gl_frame_terminator()
self.unset_rgb_paint_state()
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.present_fbo() done", self)
def do_present_fbo(self):
self.gl_marker("Presenting FBO on screen")
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
if self._alpha_enabled:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
bw, bh = self.size
ww, wh = self.render_size
if self.glconfig.is_double_buffered() or bw != ww or bh != wh:
#refresh the whole window:
rectangles = ((0, 0, bw, bh), )
else:
#paint just the rectangles we have accumulated:
rectangles = self.pending_fbo_paint
self.pending_fbo_paint = []
log("do_present_fbo: painting %s", rectangles)
glEnable(GL_TEXTURE_RECTANGLE_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._alpha_enabled:
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE)
#viewport for painting to window:
glViewport(0, 0, ww, wh)
if ww != bw or wh != bh:
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR)
glBegin(GL_QUADS)
for x, y, w, h in rectangles:
#note how we invert coordinates..
tx1, ty1, tx2, ty2 = x, bh - y, x + w, bh - y - h
vx1, vy1, vx2, vy2 = x, y, x + w, y + h
glTexCoord2i(tx1, ty1)
glVertex2i(vx1, vy1) #top-left of window viewport
glTexCoord2i(tx1, ty2)
glVertex2i(vx1, vy2) #bottom-left of window viewport
glTexCoord2i(tx2, ty2)
glVertex2i(vx2, vy2) #bottom-right of window viewport
glTexCoord2i(tx2, ty1)
glVertex2i(vx2, vy1) #top-right of window viewport
glEnd()
glDisable(GL_TEXTURE_RECTANGLE_ARB)
if self.paint_spinner:
#add spinner:
dim = min(bw / 3.0, bh / 3.0)
t = time.time()
count = int(t * 4.0)
bx = bw // 2
by = bh // 2
for i in range(8): #8 lines
glBegin(GL_POLYGON)
c = cv.trs[count % 8][i]
glColor4f(c, c, c, 1)
mi1 = math.pi * i / 4 - math.pi / 16
mi2 = math.pi * i / 4 + math.pi / 16
glVertex2i(int(bx + math.sin(mi1) * 10),
int(by + math.cos(mi1) * 10))
glVertex2i(int(bx + math.sin(mi1) * dim),
int(by + math.cos(mi1) * dim))
glVertex2i(int(bx + math.sin(mi2) * dim),
int(by + math.cos(mi2) * dim))
glVertex2i(int(bx + math.sin(mi2) * 10),
int(by + math.cos(mi2) * 10))
glEnd()
#if desired, paint window border
if self.border and self.border.shown:
#double size since half the line will be off-screen
glLineWidth(self.border.size * 2)
glBegin(GL_LINE_LOOP)
glColor4f(self.border.red, self.border.green, self.border.blue,
self.border.alpha)
for px, py in ((0, 0), (bw, 0), (bw, bh), (0, bh)):
glVertex2i(px, py)
glEnd()
# Show the backbuffer on screen
self.gl_show()
self.gl_frame_terminator()
#restore pbo viewport
glViewport(0, 0, bw, bh)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_NEAREST)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_NEAREST)
self.unset_rgb_paint_state()
log("%s(%s, %s)", glBindFramebuffer, GL_FRAMEBUFFER,
self.offscreen_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.do_present_fbo() done", self)
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
debug("GL Pixmap backing size: %d x %d, drawable=%s", w, h, drawable)
if not drawable:
return None
if not self.gl_setup:
# Ask GL to send us all debug messages
if GL_DEBUG_OUTPUT and gl_debug_callback and glInitDebugKHR(
) == True:
glEnable(GL_DEBUG_OUTPUT)
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS)
glDebugMessageCallback(gl_debug_callback, None)
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE,
0, None, GL_TRUE)
# Initialize string_marker GL debugging extension if available
if glInitStringMarkerGREMEDY and glInitStringMarkerGREMEDY(
) == True:
log.info(
"Extension GL_GREMEDY_string_marker available. Will output detailed information about each frame."
)
else:
# General case - running without debugger, extension not available
glStringMarkerGREMEDY = None
# Initialize frame_terminator GL debugging extension if available
if glInitFrameTerminatorGREMEDY and glInitFrameTerminatorGREMEDY(
) == True:
glFrameTerminatorGREMEDY = None
self.gl_marker("Initializing GL context for window size %d x %d" %
(w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
#TODO glEnableClientState(GL_VERTEX_ARRAY)
#TODO glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear to white
glClearColor(1.0, 1.0, 1.0, 1.0)
# Default state is good for YUV painting:
# - fragment program enabled
# - render to offscreen FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(5)
debug("textures for wid=%s of size %s : %s", self.wid,
self.size, self.textures)
if self.offscreen_fbo is None:
self.offscreen_fbo = glGenFramebuffers(1)
# Define empty FBO texture and set rendering to FBO
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, w, h, 0, GL_RGB,
GL_UNSIGNED_BYTE, 0)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_RECTANGLE_ARB,
self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
self.gl_setup = True
return drawable
def present_fbo(self, drawable):
if not self.paint_screen:
return
self.gl_marker("Presenting FBO on screen for drawable %s" % drawable)
assert drawable
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
if self._alpha_enabled:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
w, h = self.size
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._alpha_enabled:
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE)
glBegin(GL_QUADS)
glTexCoord2i(0, h)
glVertex2i(0, 0)
glTexCoord2i(0, 0)
glVertex2i(0, h)
glTexCoord2i(w, 0)
glVertex2i(w, h)
glTexCoord2i(w, h)
glVertex2i(w, 0)
glEnd()
glDisable(GL_TEXTURE_RECTANGLE_ARB)
if self.paint_spinner:
#add spinner:
dim = min(w / 3.0, h / 3.0)
t = time.time()
count = int(t * 4.0)
bx = w // 2
by = h // 2
for i in range(8): #8 lines
glBegin(GL_POLYGON)
c = cv.trs[count % 8][i]
glColor4f(c, c, c, 1)
mi1 = math.pi * i / 4 - math.pi / 16
mi2 = math.pi * i / 4 + math.pi / 16
glVertex2i(int(bx + math.sin(mi1) * 10),
int(by + math.cos(mi1) * 10))
glVertex2i(int(bx + math.sin(mi1) * dim),
int(by + math.cos(mi1) * dim))
glVertex2i(int(bx + math.sin(mi2) * dim),
int(by + math.cos(mi2) * dim))
glVertex2i(int(bx + math.sin(mi2) * 10),
int(by + math.cos(mi2) * 10))
glEnd()
#if desired, paint window border
if self.border and self.border.shown:
glDisable(GL_TEXTURE_RECTANGLE_ARB)
#double size since half the line will be off-screen
glLineWidth(self.border.size * 2)
glBegin(GL_LINE_LOOP)
glColor4f(self.border.red, self.border.green, self.border.blue,
self.border.alpha)
for px, py in ((0, 0), (w, 0), (w, h), (0, h)):
glVertex2i(px, py)
glEnd()
#reset color to default
glColor4f(1.0, 1.0, 1.0, 1.0)
# Show the backbuffer on screen
if drawable.is_double_buffered():
log("%s.present_fbo() swapping buffers now", self)
drawable.swap_buffers()
# Clear the new backbuffer to illustrate that its contents are undefined
glClear(GL_COLOR_BUFFER_BIT)
else:
glFlush()
self.gl_frame_terminator()
self.unset_rgb_paint_state()
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.present_fbo() done", self)
def gl_init(self):
#must be called within a context!
#performs init if needed
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
mt = get_max_texture_size()
rw, rh = self.render_size
w, h = self.size
if w>mt or h>mt:
raise Exception("invalid texture dimensions %ix%i, maximum is %i" % (w, h, mt))
self.gl_marker("Initializing GL context for window size %s, backing size %s, max texture size=%i",
self.render_size, self.size, mt)
# Initialize viewport and matrices for 2D rendering
x, _, _, y = self.offsets
glViewport(x, y, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Mesa docs claim: this hint can improve the speed of texturing
#when perspective-correct texture coordinate interpolation isn't needed,
#such as when using a glOrtho() projection:
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
glDisable(GL_SCISSOR_TEST)
glDisable(GL_LIGHTING)
glDisable(GL_DITHER)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
mag_filter = GL_NEAREST
if float(rw)/w!=rw//w or float(rh)/h!=rh//h:
#non integer scaling, use linear magnification filter:
mag_filter = GL_LINEAR
log("initializing FBOs")
# Define empty tmp FBO
target = GL_TEXTURE_RECTANGLE_ARB
glBindTexture(target, self.textures[TEX_TMP_FBO])
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, mag_filter)
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexImage2D(target, 0, self.internal_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.tmp_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, self.textures[TEX_TMP_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Define empty FBO texture and set rendering to FBO
glBindTexture(target, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, mag_filter)
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexImage2D(target, 0, self.internal_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
glBindTexture(target, 0)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
log("gl_init() done")
def gl_init(self):
drawable = self.gl_begin()
w, h = self.size
debug("%s.gl_init() GL Pixmap backing size: %d x %d, drawable=%s",
self, w, h, drawable)
if not drawable:
return None
if not self.gl_setup:
#ensure python knows which scope we're talking about:
global glInitStringMarkerGREMEDY, glStringMarkerGREMEDY
global glInitFrameTerminatorGREMEDY, glFrameTerminatorGREMEDY
# Ask GL to send us all debug messages
if GL_DEBUG_OUTPUT and gl_debug_callback and glInitDebugKHR(
) == True:
glEnable(GL_DEBUG_OUTPUT)
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS)
glDebugMessageCallback(gl_debug_callback, None)
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE,
0, None, GL_TRUE)
# Initialize string_marker GL debugging extension if available
if glInitStringMarkerGREMEDY and glInitStringMarkerGREMEDY(
) == True:
log.info(
"Extension GL_GREMEDY_string_marker available. Will output detailed information about each frame."
)
else:
# General case - running without debugger, extension not available
glStringMarkerGREMEDY = None
#don't bother trying again for another window:
glInitStringMarkerGREMEDY = None
# Initialize frame_terminator GL debugging extension if available
if glInitFrameTerminatorGREMEDY and glInitFrameTerminatorGREMEDY(
) == True:
log.info("Enabling GL frame terminator debugging.")
else:
glFrameTerminatorGREMEDY = None
#don't bother trying again for another window:
glInitFrameTerminatorGREMEDY = None
self.gl_marker("Initializing GL context for window size %d x %d" %
(w, h))
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
#TODO glEnableClientState(GL_VERTEX_ARRAY)
#TODO glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear to white
glClearColor(1.0, 1.0, 1.0, 1.0)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
if self.textures is None:
self.textures = glGenTextures(5)
debug("%s.gl_init() textures of size %s : %s", self, self.size,
self.textures)
if self.offscreen_fbo is None:
self.offscreen_fbo = glGenFramebuffers(1)
# Define empty FBO texture and set rendering to FBO
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, w, h, 0, GL_RGB,
GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_RECTANGLE_ARB,
self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.shaders = [1, 2]
glGenProgramsARB(2, self.shaders)
for progid, progstr in ((0, YUV2RGB_shader),
(1, RGBP2RGB_shader)):
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,
self.shaders[progid])
glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB,
GL_PROGRAM_FORMAT_ASCII_ARB,
len(progstr), progstr)
err = glGetString(GL_PROGRAM_ERROR_STRING_ARB)
if err:
#FIXME: maybe we should do something else here?
log.error(err)
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[0])
self.gl_setup = True
return drawable
def do_present_fbo(self):
bw, bh = self.size
ww, wh = self.render_size
self.gl_marker("Presenting FBO on screen")
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0)
if self._alpha_enabled:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
rect_count = len(self.pending_fbo_paint)
if self.glconfig.is_double_buffered() or bw!=ww or bh!=wh:
#refresh the whole window:
rectangles = ((0, 0, bw, bh), )
else:
#paint just the rectangles we have accumulated:
rectangles = self.pending_fbo_paint
self.pending_fbo_paint = []
log("do_present_fbo: painting %s", rectangles)
glEnable(GL_TEXTURE_RECTANGLE_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._alpha_enabled:
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE)
if SAVE_BUFFERS:
glBindFramebuffer(GL_READ_FRAMEBUFFER, self.offscreen_fbo)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glReadBuffer(GL_COLOR_ATTACHMENT0)
glViewport(0, 0, bw, bh)
from OpenGL.GL import glGetTexImage
size = bw*bh*4
import numpy
data = numpy.empty(size)
img_data = glGetTexImage(GL_TEXTURE_RECTANGLE_ARB, 0, GL_BGRA, GL_UNSIGNED_BYTE, data)
from PIL import Image, ImageOps
img = Image.frombuffer("RGBA", (bw, bh), img_data, "raw", "BGRA", bw*4)
img = ImageOps.flip(img)
kwargs = {}
if SAVE_BUFFERS=="jpeg":
kwargs = {
"quality" : 0,
"optimize" : False,
}
t = time.time()
tstr = time.strftime("%H-%M-%S", time.localtime(t))
filename = "./W%i-FBO-%s.%03i.%s" % (self.wid, tstr, (t*1000)%1000, SAVE_BUFFERS)
log("do_present_fbo: saving %4ix%-4i pixels, %7i bytes to %s", bw, bh, size, filename)
img.save(filename, SAVE_BUFFERS, **kwargs)
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0)
#viewport for painting to window:
glViewport(0, 0, ww, wh)
if ww!=bw or wh!=bh:
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glBegin(GL_QUADS)
for x,y,w,h in rectangles:
#note how we invert coordinates..
tx1, ty1, tx2, ty2 = x, bh-y, x+w, bh-y-h
vx1, vy1, vx2, vy2 = x, y, x+w, y+h
glTexCoord2i(tx1, ty1)
glVertex2i(vx1, vy1) #top-left of window viewport
glTexCoord2i(tx1, ty2)
glVertex2i(vx1, vy2) #bottom-left of window viewport
glTexCoord2i(tx2, ty2)
glVertex2i(vx2, vy2) #bottom-right of window viewport
glTexCoord2i(tx2, ty1)
glVertex2i(vx2, vy1) #top-right of window viewport
glEnd()
glDisable(GL_TEXTURE_RECTANGLE_ARB)
if self.paint_spinner:
#add spinner:
dim = min(bw/3.0, bh/3.0)
t = time.time()
count = int(t*4.0)
bx = bw//2
by = bh//2
for i in range(8): #8 lines
glBegin(GL_POLYGON)
c = cv.trs[count%8][i]
glColor4f(c, c, c, 1)
mi1 = math.pi*i/4-math.pi/16
mi2 = math.pi*i/4+math.pi/16
glVertex2i(int(bx+math.sin(mi1)*10), int(by+math.cos(mi1)*10))
glVertex2i(int(bx+math.sin(mi1)*dim), int(by+math.cos(mi1)*dim))
glVertex2i(int(bx+math.sin(mi2)*dim), int(by+math.cos(mi2)*dim))
glVertex2i(int(bx+math.sin(mi2)*10), int(by+math.cos(mi2)*10))
glEnd()
#if desired, paint window border
if self.border and self.border.shown:
#double size since half the line will be off-screen
glLineWidth(self.border.size*2)
glBegin(GL_LINE_LOOP)
glColor4f(self.border.red, self.border.green, self.border.blue, self.border.alpha)
for px,py in ((0, 0), (bw, 0), (bw, bh), (0, bh)):
glVertex2i(px, py)
glEnd()
if self.pointer_overlay:
x, y, _, _, size, start_time = self.pointer_overlay
elapsed = time.time()-start_time
if elapsed<6:
alpha = max(0, (5.0-elapsed)/5.0)
glLineWidth(1)
glBegin(GL_LINES)
glColor4f(0, 0, 0, alpha)
glVertex2i(x-size, y)
glVertex2i(x+size, y)
glVertex2i(x, y-size)
glVertex2i(x, y+size)
glEnd()
else:
self.pointer_overlay = None
# Show the backbuffer on screen
self.gl_show(rect_count)
self.gl_frame_terminator()
#restore pbo viewport
glViewport(0, 0, bw, bh)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
self.unset_rgb_paint_state()
log("%s(%s, %s)", glBindFramebuffer, GL_FRAMEBUFFER, self.offscreen_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.do_present_fbo() done", self)
def do_scroll_paints(self, scrolls, flush=0, callbacks=[]):
log("do_scroll_paints%s", (scrolls, flush))
context = self.gl_context()
if not context:
log.warn("Warning: cannot paint scroll, no OpenGL context!")
return
def fail(msg):
log.error("Error: %s", msg)
fire_paint_callbacks(callbacks, False, msg)
with context:
bw, bh = self.size
self.set_rgb_paint_state()
#paste from offscreen to tmp with delta offset:
glBindFramebuffer(GL_READ_FRAMEBUFFER, self.offscreen_fbo)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glReadBuffer(GL_COLOR_ATTACHMENT0)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, self.tmp_fbo)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_TMP_FBO])
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_TMP_FBO], 0)
glDrawBuffer(GL_COLOR_ATTACHMENT1)
#copy current fbo:
glBlitFramebuffer(0, 0, bw, bh,
0, 0, bw, bh,
GL_COLOR_BUFFER_BIT, GL_NEAREST)
for x,y,w,h,xdelta,ydelta in scrolls:
if abs(xdelta)>=bw:
fail("invalid xdelta value: %i" % xdelta)
continue
if abs(ydelta)>=bh:
fail("invalid ydelta value: %i" % ydelta)
continue
if ydelta==0 and xdelta==0:
fail("scroll has no delta!")
continue
if w<=0 or h<=0:
fail("invalid scroll area size: %ix%i" % (w, h))
continue
#these should be errors,
#but desktop-scaling can cause a mismatch between the backing size
#and the real window size server-side.. so we clamp the dimensions instead
if x+w>bw:
w = bw-x
if y+h>bh:
h = bh-y
if x+w+xdelta>bw:
w = bw-x-xdelta
if w<=0:
continue #nothing left!
if y+h+ydelta>bh:
h = bh-y-ydelta
if h<=0:
continue #nothing left!
if x+xdelta<0:
fail("horizontal scroll by %i: rectangle %s overflows the backing buffer size %s" % (xdelta, (x, y, w, h), self.size))
continue
if y+ydelta<0:
fail("vertical scroll by %i: rectangle %s overflows the backing buffer size %s" % (ydelta, (x, y, w, h), self.size))
continue
#opengl buffer is upside down, so we must invert Y coordinates: bh-(..)
glBlitFramebuffer(x, bh-y, x+w, bh-(y+h),
x+xdelta, bh-(y+ydelta), x+w+xdelta, bh-(y+h+ydelta),
GL_COLOR_BUFFER_BIT, GL_NEAREST)
glFlush()
#now swap references to tmp and offscreen so tmp becomes the new offscreen:
tmp = self.offscreen_fbo
self.offscreen_fbo = self.tmp_fbo
self.tmp_fbo = tmp
tmp = self.textures[TEX_FBO]
self.textures[TEX_FBO] = self.textures[TEX_TMP_FBO]
self.textures[TEX_TMP_FBO] = tmp
#restore normal paint state:
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
glBindFramebuffer(GL_READ_FRAMEBUFFER, self.offscreen_fbo)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, self.offscreen_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
self.unset_rgb_paint_state()
self.paint_box("scroll", True, x+xdelta, y+ydelta, x+w+xdelta, y+h+ydelta)
self.present_fbo(0, 0, bw, bh, flush)
fire_paint_callbacks(callbacks, True)
def gl_init(self):
#must be called within a context!
#performs init if needed
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
w, h = self.size
self.gl_marker("Initializing GL context for window size %s, backing size %s", self.render_size, self.size)
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Mesa docs claim: this hint can improve the speed of texturing
#when perspective-correct texture coordinate interpolation isn't needed,
#such as when using a glOrtho() projection:
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
glDisable(GL_SCISSOR_TEST)
glDisable(GL_LIGHTING)
glDisable(GL_DITHER)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
def clear_fbo():
try:
glClear(GL_COLOR_BUFFER_BIT)
except Exception as e:
log("glClear error", exc_info=True)
log.warn("Warning: failed to clear FBO")
log.warn(" %r", e)
if getattr(e, "err", None)==1286:
raise Exception("OpenGL error '%r' likely caused by buggy drivers" % e)
# Define empty tmp FBO
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_TMP_FBO])
set_texture_level()
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, self.texture_pixel_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.tmp_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_TMP_FBO], 0)
clear_fbo()
# Define empty FBO texture and set rendering to FBO
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
set_texture_level()
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, self.texture_pixel_format, w, h, 0, self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO], 0)
clear_fbo()
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, self.shaders[YUV2RGB_SHADER])
glEnable(GL_FRAGMENT_PROGRAM_ARB)
self.gl_setup = True
def present_fbo(self, drawable):
if not self.paint_screen:
return
self.gl_marker("Presenting FBO on screen for drawable %s" % drawable)
assert drawable
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
if self._alpha_enabled:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
w, h = self.size
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._alpha_enabled:
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glBegin(GL_QUADS)
glTexCoord2i(0, h)
glVertex2i(0, 0)
glTexCoord2i(0, 0)
glVertex2i(0, h)
glTexCoord2i(w, 0)
glVertex2i(w, h)
glTexCoord2i(w, h)
glVertex2i(w, 0)
glEnd()
#if desired, paint window border
if self.border and self.border.shown:
glDisable(GL_TEXTURE_RECTANGLE_ARB)
#double size since half the line will be off-screen
glLineWidth(self.border.size*2)
glColor4f(self.border.red, self.border.green, self.border.blue, self.border.alpha)
glBegin(GL_LINE_LOOP)
for x,y in ((0, 0), (w, 0), (w, h), (0, h)):
glVertex2i(x, y)
glEnd()
#reset color to default
glColor4f(1.0, 1.0, 1.0, 1.0)
# Show the backbuffer on screen
if drawable.is_double_buffered():
log("%s.present_fbo() swapping buffers now", self)
drawable.swap_buffers()
# Clear the new backbuffer to illustrate that its contents are undefined
glClear(GL_COLOR_BUFFER_BIT)
else:
glFlush()
self.gl_frame_terminator()
self.unset_rgb_paint_state()
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.present_fbo() done", self)
def gl_init(self):
#must be called within a context!
#performs init if needed
if not self.debug_setup:
self.debug_setup = True
self.gl_init_debug()
if not self.gl_setup:
w, h = self.size
self.gl_marker(
"Initializing GL context for window size %s, backing size %s",
self.render_size, self.size)
# Initialize viewport and matrices for 2D rendering
glViewport(0, 0, w, h)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0.0, w, h, 0.0, -1.0, 1.0)
glMatrixMode(GL_MODELVIEW)
# Mesa docs claim: this hint can improve the speed of texturing
#when perspective-correct texture coordinate interpolation isn't needed,
#such as when using a glOrtho() projection:
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST)
# Could be more optimal to use vertex arrays:
# glEnableClientState(GL_VERTEX_ARRAY)
# glEnableClientState(GL_TEXTURE_COORD_ARRAY)
# Clear background to transparent black
glClearColor(0.0, 0.0, 0.0, 0.0)
# we don't use the depth (2D only):
glDisable(GL_DEPTH_TEST)
glDisable(GL_SCISSOR_TEST)
glDisable(GL_LIGHTING)
glDisable(GL_DITHER)
# only do alpha blending in present_fbo:
glDisable(GL_BLEND)
# Default state is good for YUV painting:
# - fragment program enabled
# - YUV fragment program bound
# - render to offscreen FBO
if self.textures is None:
self.gl_init_textures()
# Define empty FBO texture and set rendering to FBO
glEnable(GL_FRAGMENT_PROGRAM_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
# nvidia needs this even though we don't use mipmaps (repeated through this file):
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_BASE_LEVEL, 0)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAX_LEVEL, 0)
try:
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0,
self.texture_pixel_format, w, h, 0,
self.texture_pixel_format, GL_UNSIGNED_BYTE, None)
except Exception as e:
log.error(
"Error: cannot initialize %ix%i %s texture", w, h,
CONSTANT_TO_PIXEL_FORMAT.get(self.texture_pixel_format,
self.texture_pixel_format))
log.error(" %r", e)
log("%s", self.gl_init, exc_info=True)
raise Exception("cannot initialize %ix%i %s texture: %r" %
(w, h,
CONSTANT_TO_PIXEL_FORMAT.get(
self.texture_pixel_format,
self.texture_pixel_format), e))
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_RECTANGLE_ARB,
self.textures[TEX_FBO], 0)
glClear(GL_COLOR_BUFFER_BIT)
# Create and assign fragment programs
if not self.shaders:
self.gl_init_shaders()
# Bind program 0 for YUV painting by default
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,
self.shaders[YUV2RGB_SHADER])
self.gl_setup = True
def do_present_fbo(self):
self.gl_marker("Presenting FBO on screen")
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
if self._alpha_enabled:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
bw, bh = self.size
ww, wh = self.render_size
if self.glconfig.is_double_buffered() or bw!=ww or bh!=wh:
#refresh the whole window:
rectangles = ((0, 0, bw, bh), )
else:
#paint just the rectangles we have accumulated:
rectangles = self.pending_fbo_paint
self.pending_fbo_paint = []
log("do_present_fbo: painting %s", rectangles)
glEnable(GL_TEXTURE_RECTANGLE_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._alpha_enabled:
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE)
#viewport for painting to window:
glViewport(0, 0, ww, wh)
if ww!=bw or wh!=bh:
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
glBegin(GL_QUADS)
for x,y,w,h in rectangles:
#note how we invert coordinates..
tx1, ty1, tx2, ty2 = x, bh-y, x+w, bh-y-h
vx1, vy1, vx2, vy2 = x, y, x+w, y+h
glTexCoord2i(tx1, ty1)
glVertex2i(vx1, vy1) #top-left of window viewport
glTexCoord2i(tx1, ty2)
glVertex2i(vx1, vy2) #bottom-left of window viewport
glTexCoord2i(tx2, ty2)
glVertex2i(vx2, vy2) #bottom-right of window viewport
glTexCoord2i(tx2, ty1)
glVertex2i(vx2, vy1) #top-right of window viewport
glEnd()
glDisable(GL_TEXTURE_RECTANGLE_ARB)
if self.paint_spinner:
#add spinner:
dim = min(bw/3.0, bh/3.0)
t = time.time()
count = int(t*4.0)
bx = bw//2
by = bh//2
for i in range(8): #8 lines
glBegin(GL_POLYGON)
c = cv.trs[count%8][i]
glColor4f(c, c, c, 1)
mi1 = math.pi*i/4-math.pi/16
mi2 = math.pi*i/4+math.pi/16
glVertex2i(int(bx+math.sin(mi1)*10), int(by+math.cos(mi1)*10))
glVertex2i(int(bx+math.sin(mi1)*dim), int(by+math.cos(mi1)*dim))
glVertex2i(int(bx+math.sin(mi2)*dim), int(by+math.cos(mi2)*dim))
glVertex2i(int(bx+math.sin(mi2)*10), int(by+math.cos(mi2)*10))
glEnd()
#if desired, paint window border
if self.border and self.border.shown:
#double size since half the line will be off-screen
glLineWidth(self.border.size*2)
glBegin(GL_LINE_LOOP)
glColor4f(self.border.red, self.border.green, self.border.blue, self.border.alpha)
for px,py in ((0, 0), (bw, 0), (bw, bh), (0, bh)):
glVertex2i(px, py)
glEnd()
# Show the backbuffer on screen
self.gl_show()
self.gl_frame_terminator()
#restore pbo viewport
glViewport(0, 0, bw, bh)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
self.unset_rgb_paint_state()
log("%s(%s, %s)", glBindFramebuffer, GL_FRAMEBUFFER, self.offscreen_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.do_present_fbo() done", self)
def do_present_fbo(self):
bw, bh = self.size
ww, wh = self.render_size
self.gl_marker("Presenting FBO on screen")
# Change state to target screen instead of our FBO
glBindFramebuffer(GL_FRAMEBUFFER, 0)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0)
if self._alpha_enabled:
# transparent background:
glClearColor(0.0, 0.0, 0.0, 0.0)
else:
# plain white no alpha:
glClearColor(1.0, 1.0, 1.0, 1.0)
# Draw FBO texture on screen
self.set_rgb_paint_state()
rect_count = len(self.pending_fbo_paint)
if self.glconfig.is_double_buffered() or bw != ww or bh != wh:
#refresh the whole window:
rectangles = ((0, 0, bw, bh), )
else:
#paint just the rectangles we have accumulated:
rectangles = self.pending_fbo_paint
self.pending_fbo_paint = []
log("do_present_fbo: painting %s", rectangles)
glEnable(GL_TEXTURE_RECTANGLE_ARB)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
if self._alpha_enabled:
# support alpha channel if present:
glEnablei(GL_BLEND, self.textures[TEX_FBO])
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE)
if SAVE_BUFFERS:
glBindFramebuffer(GL_READ_FRAMEBUFFER, self.offscreen_fbo)
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, self.textures[TEX_FBO])
glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_RECTANGLE_ARB,
self.textures[TEX_FBO], 0)
glReadBuffer(GL_COLOR_ATTACHMENT0)
glViewport(0, 0, bw, bh)
from OpenGL.GL import glGetTexImage
size = bw * bh * 4
import numpy
data = numpy.empty(size)
img_data = glGetTexImage(GL_TEXTURE_RECTANGLE_ARB, 0, GL_BGRA,
GL_UNSIGNED_BYTE, data)
from PIL import Image, ImageOps
img = Image.frombuffer("RGBA", (bw, bh), img_data, "raw", "BGRA",
bw * 4)
img = ImageOps.flip(img)
kwargs = {}
if SAVE_BUFFERS == "jpeg":
kwargs = {
"quality": 0,
"optimize": False,
}
t = time.time()
tstr = time.strftime("%H-%M-%S", time.localtime(t))
filename = "./W%i-FBO-%s.%03i.%s" % (self.wid, tstr,
(t * 1000) % 1000,
SAVE_BUFFERS)
log("do_present_fbo: saving %4ix%-4i pixels, %7i bytes to %s", bw,
bh, size, filename)
img.save(filename, SAVE_BUFFERS, **kwargs)
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0)
#viewport for painting to window:
x, _, _, y = self.offsets
glViewport(x, y, ww, wh)
if ww != bw or wh != bh:
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_LINEAR)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_LINEAR)
glBegin(GL_QUADS)
for x, y, w, h in rectangles:
#note how we invert coordinates..
tx1, ty1, tx2, ty2 = x, bh - y, x + w, bh - y - h
vx1, vy1, vx2, vy2 = x, y, x + w, y + h
glTexCoord2i(tx1, ty1)
glVertex2i(vx1, vy1) #top-left of window viewport
glTexCoord2i(tx1, ty2)
glVertex2i(vx1, vy2) #bottom-left of window viewport
glTexCoord2i(tx2, ty2)
glVertex2i(vx2, vy2) #bottom-right of window viewport
glTexCoord2i(tx2, ty1)
glVertex2i(vx2, vy1) #top-right of window viewport
glEnd()
glDisable(GL_TEXTURE_RECTANGLE_ARB)
if self.paint_spinner:
#add spinner:
dim = min(bw / 3.0, bh / 3.0)
t = time.time()
count = int(t * 4.0)
bx = bw // 2
by = bh // 2
for i in range(8): #8 lines
glBegin(GL_POLYGON)
c = cv.trs[count % 8][i]
glColor4f(c, c, c, 1)
mi1 = math.pi * i / 4 - math.pi / 16
mi2 = math.pi * i / 4 + math.pi / 16
glVertex2i(int(bx + math.sin(mi1) * 10),
int(by + math.cos(mi1) * 10))
glVertex2i(int(bx + math.sin(mi1) * dim),
int(by + math.cos(mi1) * dim))
glVertex2i(int(bx + math.sin(mi2) * dim),
int(by + math.cos(mi2) * dim))
glVertex2i(int(bx + math.sin(mi2) * 10),
int(by + math.cos(mi2) * 10))
glEnd()
#if desired, paint window border
if self.border and self.border.shown:
#double size since half the line will be off-screen
glLineWidth(self.border.size * 2)
glBegin(GL_LINE_LOOP)
glColor4f(self.border.red, self.border.green, self.border.blue,
self.border.alpha)
for px, py in ((0, 0), (bw, 0), (bw, bh), (0, bh)):
glVertex2i(px, py)
glEnd()
if self.pointer_overlay:
x, y, _, _, size, start_time = self.pointer_overlay
elapsed = time.time() - start_time
if elapsed < 6:
alpha = max(0, (5.0 - elapsed) / 5.0)
glLineWidth(1)
glBegin(GL_LINES)
glColor4f(0, 0, 0, alpha)
glVertex2i(x - size, y)
glVertex2i(x + size, y)
glVertex2i(x, y - size)
glVertex2i(x, y + size)
glEnd()
else:
self.pointer_overlay = None
# Show the backbuffer on screen
self.gl_show(rect_count)
self.gl_frame_terminator()
#restore pbo viewport
glViewport(0, 0, bw, bh)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
GL_NEAREST)
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
GL_NEAREST)
self.unset_rgb_paint_state()
log("%s(%s, %s)", glBindFramebuffer, GL_FRAMEBUFFER,
self.offscreen_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, self.offscreen_fbo)
log("%s.do_present_fbo() done", self)
