gallium: also save/restore stencil_ref in cso_save/restore_depth_stencil_alpha

makes life of state trackers easier

1 files changed, 2 insertions, 17 deletions

diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c
index ed92e3928e3..74ec85107f4 100644
--- a/src/mesa/state_tracker/st_cb_clear.c
+++ b/src/mesa/state_tracker/st_cb_clear.c
@@ -192,7 +192,6 @@ clear_with_quad(GLcontext *ctx,
                 GLboolean color, GLboolean depth, GLboolean stencil)
 {
    struct st_context *st = ctx->st;
-   struct pipe_stencil_ref stencil_ref;
    const GLfloat x0 = (GLfloat) ctx->DrawBuffer->_Xmin;
    const GLfloat x1 = (GLfloat) ctx->DrawBuffer->_Xmax;
    GLfloat y0, y1;
@@ -248,7 +247,6 @@ clear_with_quad(GLcontext *ctx,
    {
       struct pipe_depth_stencil_alpha_state depth_stencil;
       memset(&depth_stencil, 0, sizeof(depth_stencil));
-      memset(&stencil_ref, 0, sizeof(stencil_ref));
       if (depth) {
          depth_stencil.depth.enabled = 1;
          depth_stencil.depth.writemask = 1;
@@ -256,6 +254,8 @@ clear_with_quad(GLcontext *ctx,
       }
 
       if (stencil) {
+         struct pipe_stencil_ref stencil_ref;
+         memset(&stencil_ref, 0, sizeof(stencil_ref));
          depth_stencil.stencil[0].enabled = 1;
          depth_stencil.stencil[0].func = PIPE_FUNC_ALWAYS;
          depth_stencil.stencil[0].fail_op = PIPE_STENCIL_OP_REPLACE;
@@ -285,21 +285,6 @@ clear_with_quad(GLcontext *ctx,
    cso_restore_fragment_shader(st->cso_context);
    cso_restore_vertex_shader(st->cso_context);
 
-   /* cannot restore stencil ref. Try to reconstruct? */
-   if (stencil) {
-      if (ctx->Stencil.Enabled && ctx->DrawBuffer->Visual.stencilBits > 0) {
-         stencil_ref.ref_value[0] = ctx->Stencil.Ref[0] & 0xff;
-         if (ctx->Stencil._TestTwoSide) {
-            const GLuint back = ctx->Stencil._BackFace;
-            stencil_ref.ref_value[1] = ctx->Stencil.Ref[back] & 0xff;
-         }
-         else {
-            stencil_ref.ref_value[1] = stencil_ref.ref_value[0];
-         }
-      }
-      cso_set_stencil_ref(st->cso_context, &stencil_ref);
-   }
-
 }