[cogl/wip/virtual-framebuffer: 13/37] stash: Adds internal _cogl_framebuffer_push/pop_orthographic

[Robert Bragg <rbragg src gnome org>]

commit 627b82323e3f64e9b33b61c5488280a68a7b1085
Author: Robert Bragg <robert linux intel com>
Date:   Sun Nov 20 18:43:53 2011 +0000

    stash: Adds internal _cogl_framebuffer_push/pop_orthographic

 cogl/cogl-framebuffer.c |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)
---
diff --git a/cogl/cogl-framebuffer.c b/cogl/cogl-framebuffer.c
index a950770..89bf638 100644
--- a/cogl/cogl-framebuffer.c
+++ b/cogl/cogl-framebuffer.c
@@ -1915,6 +1915,38 @@ cogl_framebuffer_orthographic (CoglFramebuffer *framebuffer,
 }
 
 void
+_cogl_framebuffer_push_orthographic (CoglFramebuffer *framebuffer,
+                                     float x_1,
+                                     float y_1,
+                                     float x_2,
+                                     float y_2,
+                                     float near,
+                                     float far)
+{
+  CoglMatrixStack *projection_stack =
+    _cogl_framebuffer_get_projection_stack (framebuffer);
+  _cogl_matrix_stack_push (projection_stack);
+  _cogl_matrix_stack_load_identity (projection_stack);
+  _cogl_matrix_stack_ortho (projection_stack,
+                            x_1, x_2, y_2, y_1,
+                            near,
+                            far);
+
+  framebuffer->context->current_draw_buffer_changes |=
+    COGL_FRAMEBUFFER_STATE_PROJECTION;
+}
+
+void
+_cogl_framebuffer_pop_orthographic (CoglFramebuffer *framebuffer)
+{
+  CoglMatrixStack *projection_stack =
+    _cogl_framebuffer_get_projection_stack (framebuffer);
+  _cogl_matrix_stack_pop (projection_stack);
+  framebuffer->context->current_draw_buffer_changes |=
+    COGL_FRAMEBUFFER_STATE_PROJECTION;
+}
+
+void
 cogl_framebuffer_get_modelview_matrix (CoglFramebuffer *framebuffer,
                                        CoglMatrix *matrix)
 {