mirrors/kitty
1
0
Fork 0
mirror of https://github.com/kovidgoyal/kitty synced 2026-07-20 15:35:03 +02:00
Code Issues Packages Projects Releases Wiki Activity

Pre-render the sprites for blank/underline/strikethrough

Browse Source
This commit is contained in:
Kovid Goyal
2016-11-22 11:50:28 +05:30
parent e9bb1b3d46
commit e53c3076ef
6 changed files with 39 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
kitty/shaders.py
View File

@@ -46,11 +46,8 @@ class Sprites:
self.texture_id = self.buffer_id = self.buffer_texture_id = None
self.last_num_of_layers = 1
self.last_ynum = -1
def initialize(self):
self.texture_unit = GL_TEXTURE0
self.backend = SpriteMap(glGetIntegerv(GL_MAX_TEXTURE_SIZE), glGetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS))
self.do_layout(getattr(self, 'cell_width', 1), getattr(self, 'cell_height', 1))
def do_layout(self, cell_width=1, cell_height=1):
self.cell_width, self.cell_height = cell_width, cell_height
@@ -58,6 +55,25 @@ class Sprites:
if self.texture_id is not None:
glDeleteTexture(self.texture_id)
self.texture_id = None
self.ensure_state()
self.pre_render()
def pre_render(self):
# Pre-render the basic cells to ensure they have known sprite numbers
def send(*a, **kw):
buf = render_cell(*a, **kw)[0]
x, y, z = self.backend.increment()
self.send_to_gpu(x, y, z, buf)
return x
send() # blank
send(underline=1)
send(strikeout=True)
send(underline=1, strikeout=True)
send(underline=2)
if send(underline=2, strikeout=True) != 5:
raise RuntimeError('Available OpenGL texture size is too small')
@property
def layout(self):
@@ -82,12 +98,10 @@ class Sprites:
glBindTexture(tgt, self.texture_id)
glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
x, y = x * self.cell_width, y * self.cell_height
glTexSubImage3D(tgt, 0, x, y, self.backend.z, self.cell_width, self.cell_height, 1, GL_RED, GL_UNSIGNED_BYTE, addressof(buf))
glTexSubImage3D(tgt, 0, x, y, z, self.cell_width, self.cell_height, 1, GL_RED, GL_UNSIGNED_BYTE, addressof(buf))
glBindTexture(tgt, 0)
def realloc_texture(self):
if self.texture_id is None:
self.initialize()
tgt = GL_TEXTURE_2D_ARRAY
tex = glGenTextures(1)
glBindTexture(tgt, tex)