still not there :/ (441b8f14) · Commits · Dalai Felinto / virtual_reality_viewport

space_view3d_virtual_reality/opengl_helper.py

+18 −1

Changes for space_view3d_virtual_reality/opengl_helper.py: 18 added lines, 1 removed line.
Original line number	Diff line number	Diff line
		@@ -299,15 +299,32 @@ def view_reset(viewport):
		glViewport(viewport[0], viewport[1], viewport[2], viewport[3])


		def draw_rectangle(zed=0.0):
		def draw_rectangle_rainbow(zed=0.0):
		texco = [(1, 1), (0, 1), (0, 0), (1,0)]
		verco = [(1.0, 1.0), (-1.0, 1.0), (-1.0, -1.0), ( 1.0, -1.0)]
		colors = [(1.0, 0.0, 0.0, 0.0), (0.0, 1.0, 0.0, 0.0), (0.0, 0.0, 1.0, 0.0), (1.0, 1.0, 0.0, 0.0)]

		glPolygonMode(GL_FRONT_AND_BACK , GL_FILL)

		glBegin(GL_QUADS)
		for i in range(4):
		color = colors[i]
		glColor4f(color[0], color[1], color[2], color[3])
		glTexCoord3f(texco[i][0], texco[i][1], zed)
		glVertex2f(verco[i][0], verco[i][1])
		glEnd()


		def draw_rectangle(zed=0.0):
		texco = [(1, 1), (0, 1), (0, 0), (1,0)]
		verco = [(1.0, 1.0), (-1.0, 1.0), (-1.0, -1.0), ( 1.0, -1.0)]

		glPolygonMode(GL_FRONT_AND_BACK , GL_FILL)

		glColor4f(1.0, 1.0, 1.0, 0.0)

		glBegin(GL_QUADS)
		for i in range(4):
		glTexCoord3f(texco[i][0], texco[i][1], zed)
		glVertex2f(verco[i][0], verco[i][1])
		glEnd()

space_view3d_virtual_reality/sandbox.py

+182 −66

Changes for space_view3d_virtual_reality/sandbox.py: 182 added lines, 66 removed lines.
Original line number	Diff line number	Diff line
		@@ -6,18 +6,31 @@ from .opengl_helper import (
		create_framebuffer,
		delete_framebuffer,
		draw_rectangle,
		draw_rectangle_rainbow,
		view_reset,
		view_setup,
		)

		from bgl import *


		class GLdata:
		def __init__(self):
		self.color_tex = -1
		self.fb = -1
		self.rb = -1
		self.size = 0

		global _time
		_time = 0

		class VirtualRealitySandboxOperator(bpy.types.Operator):
		""""""
		bl_idname = "view3d.virtual_reality_sandbox"
		bl_label = "Toggle Virtual Reality Sandbox"
		bl_description = ""

		_fbo = -1
		_gl_data = None
		_timer = None
		_handle = None
		_width = 1920
		@@ -29,17 +42,14 @@ class VirtualRealitySandboxOperator(bpy.types.Operator):

		def modal(self, context, event):
		if event.type == 'TIMER':
		TODO # update FBO
		print(self._fbo)
		self._fbo_run()

		return {'PASS_THROUGH'}

		def invoke(self, context, event):
		TODO # check if oculus is connected

		if context.area.type == 'VIEW_3D':
		self._timer = context.window_manager.event_timer_add(1.0 / 75.0, context.window) # 75 Hz
		self._handle = bpy.types.SpaceView3D.draw_handler_add(self._draw_callback_px, (self, context), 'WINDOW', 'POST_VIEW')
		self._handle = bpy.types.SpaceView3D.draw_handler_add(self._draw_callback_px, (self, context), 'WINDOW', 'POST_PIXEL')
		self._init(self._width, self._height)
		return {'RUNNING_MODAL'}

		@@ -59,114 +69,220 @@ class VirtualRealitySandboxOperator(bpy.types.Operator):
		delete_framebuffer(self._fbo_id)

		def _init(self, width, height):
		TODO #everything oculus related
		# self._fbo = create_framebuffer(width, height)
		self._gl_data = GLdata()
		self._fbo_setup()

		#self._testing_fbo()
		def _fbo_setup(self):
		gl_data = self._gl_data
		size = 128

		def _testing_fbo(self):
		id_buf = Buffer(GL_INT, 1)

		#RGBA8 2D texture, 24 bit depth texture, 256x256
		#RGBA8 2D texture, 24 bit depth texture, sizexsize
		glGenTextures(1, id_buf)
		color_tex = id_buf.to_list()[0]
		gl_data.color_tex = id_buf.to_list()[0]

		glBindTexture(GL_TEXTURE_2D, color_tex)
		glBindTexture(GL_TEXTURE_2D, gl_data.color_tex)
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)

		# NULL means reserve texture memory, but texels are undefined
		null_buffer = Buffer(GL_BYTE, [(256 + 1) * (256 + 1) * 4])
		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0, GL_BGRA, GL_UNSIGNED_BYTE, null_buffer)
		null_buffer = Buffer(GL_BYTE, [(size + 1) * (size + 1) * 4])
		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, size, size, 0, GL_BGRA, GL_UNSIGNED_BYTE, null_buffer)

		#-------------------------
		glGenFramebuffers(1, id_buf)
		fb = id_buf.to_list()[0]
		glBindFramebuffer(GL_FRAMEBUFFER, fb)
		gl_data.fb = id_buf.to_list()[0]
		glBindFramebuffer(GL_FRAMEBUFFER, gl_data.fb)

		# Attach 2D texture to this FBO
		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, color_tex, 0)
		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, gl_data.color_tex, 0)

		# -------------------------
		glGenRenderbuffers(1, id_buf)
		depth_rb = id_buf.to_list()[0]
		glBindRenderbuffer(GL_RENDERBUFFER, depth_rb)
		glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, 256, 256)
		gl_data.depth_rb = id_buf.to_list()[0]
		glBindRenderbuffer(GL_RENDERBUFFER, gl_data.depth_rb)
		glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, size, size)

		# -------------------------
		# Attach depth buffer to FBO
		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depth_rb)
		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, gl_data.depth_rb)

		# -------------------------
		# Does the GPU support current FBO configuration?
		status = glCheckFramebufferStatus(GL_FRAMEBUFFER)

		glBindFramebuffer(GL_FRAMEBUFFER, 0)

		if status == GL_FRAMEBUFFER_COMPLETE:
		print("FBO: good")
		else:
		print("FBO: error", status)
		return

		# -------------------------
		# and now you can render to GL_TEXTURE_2D
		glBindFramebuffer(GL_FRAMEBUFFER, fb)
		glClearColor(1.0, 0.0, 0.0, 0.0)
		def _draw_a_quad(self):
		"""
		draw an animated quad on the screen
		"""
		import time
		import math

		global _time

		speed = 0.01

		one = 1.0
		zer = 0.0

		_time, _int = math.modf(_time + speed)
		factor = _time * 2.0

		if factor > 1.0:
		factor = 2.0 - factor;

		one = one - factor;
		zer = factor - zer;

		glClearColor(1.0, 1.0, 1.0, 1.0)
		glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT)

		glMatrixMode(GL_PROJECTION)
		glPushMatrix()
		glLoadIdentity()
		glOrtho(-1.0, 1.0, -1.0, 1.0, 1.0, 20.0)

		glMatrixMode(GL_MODELVIEW)
		glPushMatrix()
		glLoadIdentity()
		gluLookAt(0.0, 0.0, 10.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0)

		glEnable(GL_COLOR_MATERIAL)

		glBegin(GL_QUADS)
		glColor3f(one, zer, zer)
		glVertex3f(-0.75, -0.75, 0.0)
		glColor3f(zer, one, zer)
		glVertex3f( 0.75, -0.75, 0.0)
		glColor3f(zer, zer, one)
		glVertex3f( 0.75, 0.75, 0.0)
		glColor3f(one, one, zer)
		glVertex3f(-0.75, 0.75, 0.0)
		glEnd()

		glMatrixMode(GL_PROJECTION)
		glPopMatrix()

		glMatrixMode(GL_MODELVIEW)
		glPopMatrix()

		def _fbo_run(self):
		"""
		draw in the FBO
		"""
		gl_data = self._gl_data

		# setup
		glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, gl_data.fb)

		viewport = Buffer(GL_INT, 4)
		glGetIntegerv(GL_VIEWPORT, viewport)
		glViewport(0, 0, gl_data.size, gl_data.size)

		# actual drawing
		self._draw_a_quad()

		# unbinding
		glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0)
		glViewport(viewport[0], viewport[1], viewport[2], viewport[3])

		def _fbo_visualize(self):
		"""
		draw the FBO in a quad
		"""
		gl_data = self._gl_data

		viewport = Buffer(GL_INT, 4)
		glGetIntegerv(GL_VIEWPORT, viewport)
		glViewport(300, 200, 256, 256)
		glScissor(300, 200, 256, 256)

		glClearColor(0.0, 0.0, 0.0, 0.0)
		glClearDepth(1.0)
		glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT)

		# -------------------------
		glViewport(0, 0, 256, 256)
		glMatrixMode(GL_PROJECTION)
		glPushMatrix()
		glLoadIdentity()

		glMatrixMode(GL_TEXTURE)
		glPushMatrix()
		glLoadIdentity()
		glOrtho(0.0, 256.0, 0.0, 256.0, -1.0, 1.0)

		glMatrixMode(GL_MODELVIEW)
		glPushMatrix()
		glLoadIdentity()

		# -------------------------
		glOrtho(-1, 1, -1, 1, -20, 20)
		gluLookAt(0.0, 0.0, 1.0,0.0,0.0, 0.0, 0.0,1.0,0.0)

		glEnable(GL_TEXTURE_2D)
		glBindTexture(GL_TEXTURE_2D, gl_data.color_tex)

		glColor3f(1.0, 1.0, 1.0)
		glBegin(GL_QUADS)
		glTexCoord3f(1.0, 1.0, 0.0)
		glVertex2f( 1.0, 1.0)
		glTexCoord3f(0.0, 1.0, 0.0)
		glVertex2f(-1.0, 1.0)
		glTexCoord3f(0.0, 0.0, 0.0)
		glVertex2f(-1.0,-1.0)
		glTexCoord3f(1.0, 0.0, 0.0)
		glVertex2f( 1.0,-1.0)
		glEnd()

		glBindTexture(GL_TEXTURE_2D, 0)
		glDisable(GL_TEXTURE_2D)
		glDisable(GL_BLEND)
		glEnable(GL_DEPTH_TEST)

		# -------------------------
		view_setup()
		draw_rectangle(zed=0.0)

		pixels = Buffer(GL_FLOAT, [4])
		#glReadPixels(0, 0, 4, 4, GL_BGRA, GL_UNSIGNED_BYTE, pixels)
		for x in range(10):
		for y in range(10):
		glReadPixels(x * 10, y * 10, 1, 1, GL_BGRA, GL_UNSIGNED_BYTE, pixels)
		print(pixels)

		TODO # THIS is the bit that is not working, or rather, FBO as a whole may not be working

		# pixels 0, 1, 2 should be white
		# pixel 4 should be black
		# ----------------
		# Bind 0, which means render to back buffer
		glBindFramebuffer(GL_FRAMEBUFFER, 0)

		glMatrixMode(GL_PROJECTION)
		glPopMatrix()

		# Delete resources
		id_buf.to_list()[0] = color_tex
		glMatrixMode(GL_TEXTURE)
		glPopMatrix()

		glMatrixMode(GL_MODELVIEW)
		glPopMatrix()

		glViewport(viewport[0], viewport[1], viewport[2], viewport[3])

		def _debug_quad(self):
		viewport = Buffer(GL_INT, 4)
		glGetIntegerv(GL_VIEWPORT, viewport)
		glViewport(300, 200, 256, 256)

		# actual drawing
		self._draw_a_quad()

		glViewport(viewport[0], viewport[1], viewport[2], viewport[3])

		def _fbo_delete(self):
		"""
		cleanup FBO data
		"""
		gl_data = self._gl_data
		id_buf = Buffer(GL_INT, 1)

		id_buf.to_list()[0] = gl_data.color_tex
		glDeleteTextures(1, id_buf)

		id_buf.to_list()[0] = depth_rb
		id_buf.to_list()[0] = gl_data.depth_rb
		glDeleteRenderbuffers(1, id_buf)
		# Bind 0, which means render to back buffer, as a result, fb is unbound
		glBindFramebuffer(GL_FRAMEBUFFER, 0)

		id_buf.to_list()[0] = fb
		glDeleteFramebuffers(1, id_buf)
		glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0)

		id_buf.to_list()[0] = gl_data.fb
		glDeleteFramebuffers(1, id_buf)

		def _draw_callback_px(_self, self, context):
		"""core function"""
		self._testing_fbo()
		#view_setup()
		#draw_rectangle()
		self._fbo_visualize()
		self._debug_quad()


		# ############################################################