1 files changed, 21 insertions, 15 deletions

diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index b9311d0ffc9..c735e18affb 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -97,16 +97,22 @@ _mesa_copy_texture_state( const GLcontext *src, GLcontext *dst )
       dst->Texture.Unit[u].BumpTarget = src->Texture.Unit[u].BumpTarget;
       COPY_4V(dst->Texture.Unit[u].RotMatrix, src->Texture.Unit[u].RotMatrix);
 
+      /*
+       * XXX strictly speaking, we should compare texture names/ids and
+       * bind textures in the dest context according to id.  For now, only
+       * copy bindings if the contexts share the same pool of textures to
+       * avoid refcounting bugs.
+       */
+      if (dst->Shared == src->Shared) {
+         /* copy texture object bindings, not contents of texture objects */
+         _mesa_lock_context_textures(dst);
 
-      /* copy texture object bindings, not contents of texture objects */
-      _mesa_lock_context_textures(dst);
-
-      for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
-         _mesa_reference_texobj(&dst->Texture.Unit[u].CurrentTex[tex],
-                                src->Texture.Unit[u].CurrentTex[tex]);
+         for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) {
+            _mesa_reference_texobj(&dst->Texture.Unit[u].CurrentTex[tex],
+                                   src->Texture.Unit[u].CurrentTex[tex]);
+         }
+         _mesa_unlock_context_textures(dst);
       }
-
-      _mesa_unlock_context_textures(dst);
    }
 }
 
@@ -301,10 +307,6 @@ _mesa_ActiveTextureARB(GLenum texture)
       /* update current stack pointer */
       ctx->CurrentStack = &ctx->TextureMatrixStack[texUnit];
    }
-
-   if (ctx->Driver.ActiveTexture) {
-      (*ctx->Driver.ActiveTexture)( ctx, (GLuint) texUnit );
-   }
 }
 
 
@@ -316,11 +318,18 @@ _mesa_ClientActiveTextureARB(GLenum texture)
    GLuint texUnit = texture - GL_TEXTURE0;
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
+   if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE))
+      _mesa_debug(ctx, "glClientActiveTexture %s\n",
+                  _mesa_lookup_enum_by_nr(texture));
+
    if (texUnit >= ctx->Const.MaxTextureCoordUnits) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glClientActiveTexture(texture)");
       return;
    }
 
+   if (ctx->Array.ActiveTexture == texUnit)
+      return;
+
    FLUSH_VERTICES(ctx, _NEW_ARRAY);
    ctx->Array.ActiveTexture = texUnit;
 }
@@ -354,9 +363,6 @@ update_texture_matrices( GLcontext *ctx )
 	 if (ctx->Texture.Unit[u]._ReallyEnabled &&
 	     ctx->TextureMatrixStack[u].Top->type != MATRIX_IDENTITY)
 	    ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(u);
-
-	 if (ctx->Driver.TextureMatrix)
-	    ctx->Driver.TextureMatrix( ctx, u, ctx->TextureMatrixStack[u].Top);
       }
    }
 }