typo

1 files changed, 1 insertions, 1 deletions

diff --git a/Development/Documentation/GlamorPerformance.mdwn b/Development/Documentation/GlamorPerformance.mdwn
index 027c451b..4ab7453a 100644
--- a/Development/Documentation/GlamorPerformance.mdwn
+++ b/Development/Documentation/GlamorPerformance.mdwn
@@ -2,7 +2,7 @@ Glamor _should_ be able to accelerate all of X, given a sufficiently capable GL
 
 ## Core ops
 
-The two bits of core GC state that tend to cause fallbacks are GCFunction and GXPlaneMask. For the former we try to use glLogicOp, which works for draw calls but not for texture image calls, and doesn't exist in GLES. For the latter we basically just punt if the planemask isn't trivial.
+The two bits of core GC state that tend to cause fallbacks are GCFunction and GCPlaneMask. For the former we try to use glLogicOp, which works for draw calls but not for texture image calls, and doesn't exist in GLES. For the latter we basically just punt if the planemask isn't trivial.
 
 We could probably accelerate both of the above if the GL(SL) below us has something like [[MESA_shader_integer_functions|https://www.opengl.org/registry/specs/MESA/shader_integer_functions.txt]] or [[EXT_framebuffer_fetch|https://www.khronos.org/registry/gles/extensions/EXT/EXT_shader_framebuffer_fetch.txt]].