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 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)