Mesa (master): mesa: Add support for inverted s/w conditional rendering

[Chris Forbes]

Module: Mesa
Branch: master
Commit: 3f8ad326276d14f3e38b4b5a58547227911d1ee7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3f8ad326276d14f3e38b4b5a58547227911d1ee7

Author: Chris Forbes <chrisf at ijw.co.nz>
Date:   Tue Aug 19 23:23:08 2014 +1200

mesa: Add support for inverted s/w conditional rendering

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>

---

 src/mesa/main/condrender.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/mesa/main/condrender.c b/src/mesa/main/condrender.c
index 54cd423..75f9d74 100644
--- a/src/mesa/main/condrender.c
+++ b/src/mesa/main/condrender.c
@@ -162,12 +162,25 @@ _mesa_check_conditional_render(struct gl_context *ctx)
          ctx->Driver.WaitQuery(ctx, q);
       }
       return q->Result > 0;
+   case GL_QUERY_BY_REGION_WAIT_INVERTED:
+      /* fall-through */
+   case GL_QUERY_WAIT_INVERTED:
+      if (!q->Ready) {
+         ctx->Driver.WaitQuery(ctx, q);
+      }
+      return q->Result == 0;
    case GL_QUERY_BY_REGION_NO_WAIT:
       /* fall-through */
    case GL_QUERY_NO_WAIT:
       if (!q->Ready)
          ctx->Driver.CheckQuery(ctx, q);
       return q->Ready ? (q->Result > 0) : GL_TRUE;
+   case GL_QUERY_BY_REGION_NO_WAIT_INVERTED:
+      /* fall-through */
+   case GL_QUERY_NO_WAIT_INVERTED:
+      if (!q->Ready)
+         ctx->Driver.CheckQuery(ctx, q);
+      return q->Ready ? (q->Result == 0) : GL_TRUE;
    default:
       _mesa_problem(ctx, "Bad cond render mode %s in "
                     " _mesa_check_conditional_render()",