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Fix incorrect tracking of previous buffer sizes to avoid re-allocs

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Kovid Goyal 2017-08-21 17:12:46 +05:30
parent 0a21819e16
commit 7e79aac275
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 6 additions and 4 deletions
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10
kitty/shaders.py
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@ -5,6 +5,7 @@
import os
import sys
from ctypes import addressof, sizeof
from collections import defaultdict
from functools import lru_cache
from threading import Lock
@ -52,7 +53,7 @@ class Sprites:
# extensions one they become available.
def __init__(self):
self.prev_sprite_map_sz = 0
self.prev_sprite_map_sizes = defaultdict(lambda: 0)
self.xnum = self.ynum = 1
self.first_cell_cache = {}
self.second_cell_cache = {}
@ -170,11 +171,12 @@ class Sprites:
return glGenBuffers(1)
def set_sprite_map(self, buf_id, data, usage=GL_STREAM_DRAW):
prev_sz, self.prev_sprite_map_sz = self.prev_sprite_map_sz, sizeof(data)
replace_or_create_buffer(buf_id, self.prev_sprite_map_sz, prev_sz, addressof(data), usage)
prev_sz = self.prev_sprite_map_sizes[buf_id]
self.prev_sprite_map_sizes[buf_id] = new_sz = sizeof(data)
replace_or_create_buffer(buf_id, new_sz, prev_sz, addressof(data), usage)
if False:
verify_data = type(data)()
glGetBufferSubData(buf_id, self.prev_sprite_map_sz, 0, addressof(verify_data))
glGetBufferSubData(buf_id, new_sz, 0, addressof(verify_data))
if list(data) != list(verify_data):
raise RuntimeError('OpenGL failed to upload to buffer')