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Go back to using glTexStorage as it is commonly present via extension and higher performance

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Kovid Goyal
2016-10-28 07:33:15 +05:30
parent c9e3d57ed5
commit 5791700de7
1 changed files with 2 additions and 5 deletions
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7
kitty/shaders.py
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@@ -7,6 +7,7 @@ from functools import lru_cache
from OpenGL.arrays import ArrayDatatype
import OpenGL.GL as gl
from OpenGL.GL.ARB.copy_image import glCopyImageSubData # only present in opengl core >= 4.3
from OpenGL.GL.ARB.texture_storage import glTexStorage3D # only present in opengl core >= 4.2
from .fonts import render_cell, cell_size
@@ -50,13 +51,9 @@ class Sprites:
gl.glTexParameteri(tgt, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
gl.glTexParameteri(tgt, gl.GL_TEXTURE_WRAP_S, gl.GL_CLAMP_TO_EDGE)
gl.glTexParameteri(tgt, gl.GL_TEXTURE_WRAP_T, gl.GL_CLAMP_TO_EDGE)
gl.glTexParameteri(tgt, gl.GL_TEXTURE_BASE_LEVEL, 0)
gl.glTexParameteri(tgt, gl.GL_TEXTURE_MAX_LEVEL, 0)
znum = self.z + 1
width, height = self.xnum * self.cell_width, self.ynum * self.cell_height
gl.glTexImage3D(tgt, 0, gl.GL_R8,
width, height, znum,
0, gl.GL_RED, gl.GL_UNSIGNED_BYTE, None)
glTexStorage3D(tgt, 1, gl.GL_R8, width, height, znum)
if self.texture_id is not None:
ynum = self.ynum
if self.z == 0: