mesa: A change of gl_vertex_processing_mode needs an array update.

Since arrays also handle the mapping of current values into the
disabled array slots, we need to tell the array update code that
this mapping has changed. Also mark only dirty if it has changed.

Reviewed-by: Brian Paul <[email protected]>
Signed-off-by: Mathias Fröhlich <[email protected]>

1 files changed, 17 insertions, 3 deletions

diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index a6ae3b90018..fb97165db91 100644
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -466,6 +466,20 @@ set_new_array(struct gl_context *ctx)
 }
 
 
+static void
+set_vertex_processing_mode(struct gl_context *ctx, gl_vertex_processing_mode m)
+{
+   if (ctx->VertexProgram._VPMode == m)
+      return;
+
+   /* On change we may get new maps into the current values */
+   set_new_array(ctx);
+
+   /* Finally memorize the value */
+   ctx->VertexProgram._VPMode = m;
+}
+
+
 /**
  * Update ctx->VertexProgram._VPMode.
  * This is to distinguish whether we're running
@@ -477,11 +491,11 @@ void
 _mesa_update_vertex_processing_mode(struct gl_context *ctx)
 {
    if (ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX])
-      ctx->VertexProgram._VPMode = VP_MODE_SHADER;
+      set_vertex_processing_mode(ctx, VP_MODE_SHADER);
    else if (_mesa_arb_vertex_program_enabled(ctx))
-      ctx->VertexProgram._VPMode = VP_MODE_SHADER;
+      set_vertex_processing_mode(ctx, VP_MODE_SHADER);
    else
-      ctx->VertexProgram._VPMode = VP_MODE_FF;
+      set_vertex_processing_mode(ctx, VP_MODE_FF);
 }