From fe37adfde3643b7f94a57c348ffd3cce5fc3b588 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 21 Mar 2006 00:47:40 +0000
Subject: [PATCH] Added _mesa_finish_render_texture() function and reference
 counting for the renderbuffer which wraps textures.

---
 src/mesa/drivers/common/driverfuncs.c |  1 +
 src/mesa/main/texrender.c             | 12 ++++++++++++
 src/mesa/main/texrender.h             |  4 ++++
 3 files changed, 17 insertions(+)

diff --git a/src/mesa/drivers/common/driverfuncs.c b/src/mesa/drivers/common/driverfuncs.c
index 9fe4ee3ad2d..9eb05442beb 100644
--- a/src/mesa/drivers/common/driverfuncs.c
+++ b/src/mesa/drivers/common/driverfuncs.c
@@ -207,6 +207,7 @@ _mesa_init_driver_functions(struct dd_function_table *driver)
    driver->NewFramebuffer = _mesa_new_framebuffer;
    driver->NewRenderbuffer = _mesa_new_soft_renderbuffer;
    driver->RenderbufferTexture = _mesa_renderbuffer_texture;
+   driver->FinishRenderTexture = _mesa_finish_render_texture;
    driver->FramebufferRenderbuffer = _mesa_framebuffer_renderbuffer;
 #endif
 
diff --git a/src/mesa/main/texrender.c b/src/mesa/main/texrender.c
index dca93a1c04a..01e6d6748a5 100644
--- a/src/mesa/main/texrender.c
+++ b/src/mesa/main/texrender.c
@@ -195,6 +195,7 @@ wrap_texture(GLcontext *ctx, struct gl_renderbuffer_attachment *att)
    trb->Base.DepthBits = trb->TexImage->TexFormat->DepthBits;
 
    att->Renderbuffer = &(trb->Base);
+   trb->Base.RefCount++;
 }
 
 
@@ -241,3 +242,14 @@ _mesa_renderbuffer_texture(GLcontext *ctx,
 }
 
 
+void
+_mesa_finish_render_texture(GLcontext *ctx,
+                            struct gl_renderbuffer_attachment *att)
+{
+   if (att->Renderbuffer) {
+      att->Renderbuffer->RefCount--;
+   }
+   if (att->Renderbuffer->RefCount <= 0) {
+      _mesa_debug(ctx, "%s refcount == 0!\n", __FUNCTION__);
+   }
+}
diff --git a/src/mesa/main/texrender.h b/src/mesa/main/texrender.h
index 1e11e505130..575d84415f2 100644
--- a/src/mesa/main/texrender.h
+++ b/src/mesa/main/texrender.h
@@ -7,5 +7,9 @@ _mesa_renderbuffer_texture(GLcontext *ctx,
                            struct gl_framebuffer *fb,
                            struct gl_renderbuffer_attachment *att);
 
+extern void
+_mesa_finish_render_texture(GLcontext *ctx,
+                            struct gl_renderbuffer_attachment *att);
+
 
 #endif /* TEXRENDER_H */