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glamor: Fix no-mipmap allocations

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With GL_TEXTURE_MIN_FILTER, we configure not to use mipmaps, but
there's no real way until GL_ARB_texture_storage to dictate whether
memory should be allocated for mipmap levels or not.

GL_TEXTURE_MAX_LEVEL is a stronger hint to the driver than the
filtering that we really don't want mipmap allocations.  Stops VARM
wasting warnings from the nvidia driver.

Signed-off-by: Markus Wick <markus@selfnet.de>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Markus Wick 2014-05-14 23:08:17 +02:00 committed by Eric Anholt
parent e27a839bf0
commit 3778fab34b
3 changed files with 3 additions and 0 deletions
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1
glamor/glamor_fbo.c
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@ -347,6 +347,7 @@ _glamor_create_tex(glamor_screen_private *glamor_priv,
glamor_make_current(glamor_priv);
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, format, w, h, 0,

1
glamor/glamor_font.c
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@ -95,6 +95,7 @@ glamor_font_get(ScreenPtr screen, FontPtr font)
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, glamor_font->texture_id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

1
glamor/glamor_pixmap.c
View File

@ -717,6 +717,7 @@ __glamor_upload_pixmap_to_texture(PixmapPtr pixmap, unsigned int *tex,
}
glBindTexture(GL_TEXTURE_2D, *tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);