Mesa (master): mesa: fix immediate mode with tessellation and varying patch vertices

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Module: Mesa
Branch: master
Commit: 2e05a280b6b6d334388e3824bd82472ccbf33252
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2e05a280b6b6d334388e3824bd82472ccbf33252

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Thu Feb 13 23:14:47 2020 -0500

mesa: fix immediate mode with tessellation and varying patch vertices

Cc: 19.3 20.0 <mesa-stable at lists.freedesktop.org>
Reviewed-by: Mathias Fröhlich <mathias.froehlich at web.de>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3861>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3861>

---

 src/mesa/main/shaderapi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 0d3c0de908e..ab81775f57d 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -2660,6 +2660,7 @@ void GLAPIENTRY
 _mesa_PatchParameteri_no_error(GLenum pname, GLint value)
 {
    GET_CURRENT_CONTEXT(ctx);
+   FLUSH_VERTICES(ctx, 0);
    ctx->TessCtrlProgram.patch_vertices = value;
 }
 
@@ -2684,6 +2685,7 @@ _mesa_PatchParameteri(GLenum pname, GLint value)
       return;
    }
 
+   FLUSH_VERTICES(ctx, 0);
    ctx->TessCtrlProgram.patch_vertices = value;
 }