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cogl-atlas-texture: Don't use the atlas if FBOs aren't supported

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If FBOs aren't supported then it will end up very slow to reorganize
the atlas. Also currently the CoglTexture2D backend will refuse to
create any textures anyway so the full atlas texture won't be created.
This commit is contained in:
Neil Roberts 2010-02-16 12:01:18 +00:00
parent a5021ba30f
commit 958545aa70
1 changed files with 5 additions and 3 deletions
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8
clutter/cogl/cogl/cogl-atlas-texture.c
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@ -955,9 +955,11 @@ _cogl_atlas_texture_new_from_bitmap (CoglHandle bmp_handle,
if (bmp->width < 1 || bmp->height < 1)
return COGL_INVALID_HANDLE;
/* If we can't read back texture data then it will be too slow to
migrate textures and we shouldn't use the atlas */
if (!cogl_features_available (COGL_FEATURE_TEXTURE_READ_PIXELS))
/* If we can't use FBOs or we can't read back texture data then it
will be too slow to migrate textures and we shouldn't use the
atlas */
if (!cogl_features_available (COGL_FEATURE_TEXTURE_READ_PIXELS) ||
!cogl_features_available (COGL_FEATURE_OFFSCREEN))
return COGL_INVALID_HANDLE;
COGL_NOTE (ATLAS, "Adding texture of size %ix%i", bmp->width, bmp->height);