From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Mon, 11 Aug 2008 21:05:57 +0000 (-0600)
Subject: mesa: added comment about gl_PointCoord
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3a428aca93fe2bab84ddfaf794a396133e802465;p=mesa.git

mesa: added comment about gl_PointCoord
---

diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c
index bf7a1de03bc..525cf9d7245 100644
--- a/src/mesa/swrast/s_fragprog.c
+++ b/src/mesa/swrast/s_fragprog.c
@@ -129,6 +129,7 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine,
    if (ctx->Shader.CurrentProgram) {
       /* Store front/back facing value in register FOGC.Y */
       machine->Attribs[FRAG_ATTRIB_FOGC][col][1] = 1.0 - span->facing;
+      /* Note FOGC.ZW is gl_PointCoord if drawing a sprite */
    }
 
    machine->CurElement = col;