X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=init.h;fp=init.h;h=398ddbe647e82b0fb832f26882dfb521ec91aaef;hp=9b4deff5c7a36bb256b93ba199b5c8862c55f961;hb=8dedcc2fd11b00fec125212b60e144363033137d;hpb=03b416172e9db37845b8c897d51064cbc6b3aa3f

diff --git a/init.h b/init.h
index 9b4deff..398ddbe 100644
--- a/init.h
+++ b/init.h
@@ -51,9 +51,14 @@ extern float movit_texel_subpixel_precision;
 // round the right way (giving some leeway, but not a lot); the number
 // of errors are stored here.
 //
-// If this value is above 0, and you have enabled dithering, we will
-// round off explicitly at the very end of the shader.
+// If this value is above 0, the extension GL_EXT_gpu_shader4 is available
+// (giving round()) and you have enabled dithering, we will round off
+// explicitly at the very end of the shader.
+//
+// Note: I don't know of any cards that round off wrong (well, outside
+// our tolerance) and do not have this extension.
 extern int movit_num_wrongly_rounded;
+extern bool movit_shader_rounding_supported;
 
 // Whether the GPU in use supports GL_EXT_texture_sRGB.
 extern bool movit_srgb_textures_supported;