Free shader-related context state: _mesa_free_shader_state()

2 files changed, 19 insertions, 0 deletions

diff --git a/src/mesa/shader/shader_api.c b/src/mesa/shader/shader_api.c
index 88aa8c50f5b..002b42721df 100644
--- a/src/mesa/shader/shader_api.c
+++ b/src/mesa/shader/shader_api.c
@@ -212,6 +212,22 @@ _mesa_init_shader_state(GLcontext * ctx)
 
 
 /**
+ * Free the per-context shader-related state.
+ */
+void
+_mesa_free_shader_state(GLcontext *ctx)
+{
+   if (ctx->Shader.CurrentProgram) {
+      ctx->Shader.CurrentProgram->RefCount--;
+      if (ctx->Shader.CurrentProgram->RefCount <= 0) {
+         _mesa_free_shader_program(ctx, ctx->Shader.CurrentProgram);
+         ctx->Shader.CurrentProgram = NULL;
+      }
+   }
+}
+
+
+/**
  * Copy string from <src> to <dst>, up to maxLength characters, returning
  * length of <dst> in <length>.
  * \param src  the strings source
diff --git a/src/mesa/shader/shader_api.h b/src/mesa/shader/shader_api.h
index 315f60a35f7..16ed1a0c108 100644
--- a/src/mesa/shader/shader_api.h
+++ b/src/mesa/shader/shader_api.h
@@ -38,6 +38,9 @@
 extern void
 _mesa_init_shader_state(GLcontext * ctx);
 
+extern void
+_mesa_free_shader_state(GLcontext *ctx);
+
 extern struct gl_shader_program *
 _mesa_new_shader_program(GLcontext *ctx, GLuint name);