def delete_textures(self):
# for t in cls.delete_texture_list:
# glDeleteTextures([t])
gl.glDeleteTextures(self.delete_texture_list)
self.delete_texture_list[:] = []
# cls.unused_texture_list.extend(cls.delete_texture_list)
# cls.delete_texture_list[:] = []
# pass
if len(self.delete_texture_list) > 0:
texture = self.delete_texture_list.pop()
gl.glDeleteTextures(texture)
def delete_textures(self):
# for t in cls.delete_texture_list:
# glDeleteTextures([t])
gl.glDeleteTextures(self.delete_texture_list)
self.delete_texture_list[:] = []
# cls.unused_texture_list.extend(cls.delete_texture_list)
# cls.delete_texture_list[:] = []
# pass
if len(self.delete_texture_list) > 0:
texture = self.delete_texture_list.pop()
gl.glDeleteTextures(texture)
def render(self, text, x, y, r=1.0, g=1.0, b=1.0, alpha=1.0):
global text_cache
if not text:
return 0
# find cached text entry, if any
for i, item in enumerate(text_cache):
if item["text"] == text and item["font"] == self:
text_cache.pop(i)
break
else:
item = None
if item:
fs_emu_blending(True)
fs_emu_texturing(True)
w = item["w"]
h = item["h"]
gl.glBindTexture(gl.GL_TEXTURE_2D, item["texture"])
gl.glBegin(gl.GL_QUADS)
gl.glColor4f(r * alpha, g * alpha, b * alpha, alpha)
gl.glTexCoord2d(0.0, 0.0)
gl.glVertex2d(x, y)
gl.glTexCoord2d(1.0, 0.0)
gl.glVertex2d(x + w, y)
gl.glTexCoord2d(1.0, 1.0)
gl.glVertex2d(x + w, y + h)
gl.glTexCoord2d(0.0, 1.0)
gl.glVertex2d(x, y + h)
gl.glEnd()
# re-insert item at front
text_cache.insert(0, item)
return w, h
# calculate size of text
required_width, required_height = self.measure(text)
# setup fbo
render_texture = gl.glGenTextures(1)
gl.glBindTexture(gl.GL_TEXTURE_2D, render_texture)
gl.glTexImage2D(
gl.GL_TEXTURE_2D,
0,
gl.GL_RGBA,
required_width,
required_height,
0,
gl.GL_RGBA,
gl.GL_UNSIGNED_INT,
None,
)
gl.glTexParameteri(
gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, gl.GL_CLAMP_TO_EDGE
)
gl.glTexParameteri(
gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, gl.GL_CLAMP_TO_EDGE
)
gl.glTexParameteri(
gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR
)
# FIXME: Mipmapping?
mip_mapping = 0
if mip_mapping:
gl.glTexParameteri(
gl.GL_TEXTURE_2D,
gl.GL_TEXTURE_MIN_FILTER,
gl.GL_LINEAR_MIPMAP_LINEAR,
)
gl.glTexParameteri(
gl.GL_TEXTURE_2D, gl.GL_GENERATE_MIPMAP, gl.GL_TRUE
)
gl.glGenerateMipmapEXT(gl.GL_TEXTURE_2D)
else:
gl.glTexParameteri(
gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR
)
gl.glBindTexture(gl.GL_TEXTURE_2D, 0)
# Set up some renderbuffer state
frame_buffer = gl.GLuint()
gl.glGenFramebuffersEXT(1, frame_buffer)
gl.glBindFramebufferEXT(gl.GL_FRAMEBUFFER_EXT, frame_buffer)
gl.glFramebufferTexture2DEXT(
gl.GL_FRAMEBUFFER_EXT,
gl.GL_COLOR_ATTACHMENT0_EXT,
gl.GL_TEXTURE_2D,
render_texture,
0,
)
status = gl.glCheckFramebufferStatusEXT(gl.GL_FRAMEBUFFER_EXT)
if status != gl.GL_FRAMEBUFFER_COMPLETE_EXT:
print("glCheckFramebufferStatusEXT error", status)
gl.glPushMatrix()
gl.glLoadIdentity()
gl.glPushAttrib(int(gl.GL_VIEWPORT_BIT) | int(gl.GL_ENABLE_BIT))
gl.glViewport(0, 0, required_width, required_height)
gl.glMatrixMode(gl.GL_PROJECTION)
gl.glPushMatrix()
gl.glLoadIdentity()
gl.gluOrtho2D(0, required_width, 0, required_height)
gl.glClearColor(0.0, 0.0, 0.0, 0.0)
gl.glClear(gl.GL_COLOR_BUFFER_BIT)
gl.glEnable(gl.GL_BLEND)
gl.glEnable(gl.GL_TEXTURE_2D)
self.texture.bind()
tw = self.texture.w
th = self.texture.h
gl.glBegin(gl.GL_QUADS)
gl.glColor4f(1.0, 1.0, 1.0, 1.0)
x2 = 0
h = self.h
for ch in text:
c = ord(ch)
w = self.w[c]
s1 = self.x[c] / tw
s2 = (self.x[c] + w) / tw
t1 = (self.y[c]) / th
t2 = (self.y[c] + h) / th
gl.glTexCoord2d(s1, t2)
gl.glVertex2d(x2, 0)
gl.glTexCoord2d(s2, t2)
gl.glVertex2d(x2 + w, 0)
gl.glTexCoord2d(s2, t1)
gl.glVertex2d(x2 + w, h)
gl.glTexCoord2d(s1, t1)
gl.glVertex2d(x2, h)
x2 += w
gl.glEnd()
gl.glPopMatrix()
gl.glMatrixMode(gl.GL_MODELVIEW)
gl.glPopAttrib()
gl.glBindFramebufferEXT(gl.GL_FRAMEBUFFER_EXT, 0)
gl.glPopMatrix()
gl.glDeleteFramebuffersEXT(1, frame_buffer)
if mip_mapping:
gl.glBindTexture(gl.GL_TEXTURE_2D, render_texture)
gl.glGenerateMipmapEXT(gl.GL_TEXTURE_2D)
gl.glBindTexture(gl.GL_TEXTURE_2D, 0)
new_item = {
"font": self,
"text": text,
"w": required_width,
"h": required_height,
"texture": render_texture,
}
text_cache.insert(0, new_item)
item = text_cache.pop()
if item["texture"]:
gl.glDeleteTextures([item["texture"]])
# now the text is in the cache, so call function again
return self.render(text, x, y, r, g, b, alpha)