def bind_depth_texture(self, size):
"""Create depth texture for shadow map."""
width, height = size
texture_type = GL_TEXTURE_2D
self.__depth_map_fbo = glGenFramebuffers(1)
depth_map = self.__textures_ids[len(self.__textures)]
glBindTexture(texture_type, depth_map)
self.__textures.append(2)
glTexImage2D(texture_type, 0, GL_DEPTH_COMPONENT, width, height, 0,
GL_DEPTH_COMPONENT, GL_FLOAT, None)
glTexParameteri(texture_type, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(texture_type, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(texture_type, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameteri(texture_type, GL_TEXTURE_WRAP_T, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE,
GL_COMPARE_REF_TO_TEXTURE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_LESS)
glBindFramebuffer(GL_FRAMEBUFFER, self.__depth_map_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
GL_TEXTURE_2D, depth_map, 0)
glDrawBuffer(GL_NONE)
glReadBuffer(GL_NONE)
glBindFramebuffer(GL_FRAMEBUFFER, 0)
def bind_depth_texture(self, size):
"""Create depth texture for shadow map."""
width, height = size
texture_type = GL_TEXTURE_2D
self.__depth_map_fbo = glGenFramebuffers(1)
depth_map = self.__textures_ids[len(self.__textures)]
glBindTexture(texture_type, depth_map)
self.__textures.append(2)
glTexImage2D(texture_type, 0, GL_DEPTH_COMPONENT,
width, height, 0, GL_DEPTH_COMPONENT,
GL_FLOAT, None)
glTexParameteri(texture_type, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(texture_type, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(texture_type, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameteri(texture_type, GL_TEXTURE_WRAP_T, GL_REPEAT)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE,
GL_COMPARE_REF_TO_TEXTURE)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC,
GL_LESS)
glBindFramebuffer(GL_FRAMEBUFFER, self.__depth_map_fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
GL_TEXTURE_2D, depth_map, 0)
glDrawBuffer(GL_NONE)
glReadBuffer(GL_NONE)
glBindFramebuffer(GL_FRAMEBUFFER, 0)
def init_back_texture(self, width, height):
if self.fbo is None:
self.fbo = glGenFramebuffers(1)
glActiveTexture(GL_TEXTURE0 + 1)
if self.bfTex is not None:
glDeleteTextures([self.bfTex])
self.bfTex = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, self.bfTex)
glTexParameter(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
glTexParameter(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
w = int(width)
h = int(height)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, w, h, 0,
GL_RGBA, GL_FLOAT, None)
glBindFramebuffer(GL_FRAMEBUFFER, self.fbo)
glFramebufferTexture2D(GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D,
self.bfTex, 0)
glBindFramebuffer(GL_FRAMEBUFFER, 0)
glBindTexture(GL_TEXTURE_2D, 0)
def bind_to_frame_depth_buffer(self, frame_buffer, depth_buffer=None):
glBindFramebuffer(GL_FRAMEBUFFER, frame_buffer)
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, self.texture, 0)
if depth_buffer is not None:
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER, depth_buffer)
glBindFramebuffer(GL_FRAMEBUFFER, 0)
def prerenderTiles(self, tiles):
if not tiles:
return
minX = self.pos[0]
minY = self.pos[1]
maxX = self.pos[0] + self.micronSize
maxY = self.pos[1] + self.micronSize
viewBox = ((minX, minY), (maxX, maxY))
newTiles = []
for tile in tiles:
if tile.intersectsBox(viewBox):
newTiles.append(tile)
if newTiles:
# Allocate memory for our texture, if needed.
if not self.haveAllocatedMemory:
self.bindTexture()
self.refresh()
self.haveAllocatedMemory = True
self.numRenderedTiles += len(newTiles)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, megaTileFramebuffer)
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
self.texture, 0)
glPushMatrix()
glLoadIdentity()
glViewport(0, 0, self.pixelSize, self.pixelSize)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(0, self.micronSize, self.micronSize, 0, 1, 0)
glTranslatef(-self.pos[0], -self.pos[1], 0)
glMatrixMode(GL_MODELVIEW)
glEnable(GL_TEXTURE_2D)
for tile in newTiles:
tile.render(viewBox)
glPopMatrix()
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0)