From dcca97a3e3c1d8f5d27e1177257964eddb9effd3 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Wed, 6 May 2009 15:23:09 -0600
Subject: mesa: added gl_buffer_object::Written flag (for debug purposes)

The flag is set when we data has been written into the buffer object.
---
 src/mesa/main/bufferobj.c | 6 ++++++
 src/mesa/main/mtypes.h    | 1 +
 2 files changed, 7 insertions(+)

(limited to 'src/mesa')

diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 49f690ddd2..43a8d2ba66 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -962,6 +962,8 @@ _mesa_BufferDataARB(GLenum target, GLsizeiptrARB size,
 
    ASSERT(ctx->Driver.BufferData);
 
+   bufObj->Written = GL_TRUE;
+
    /* Give the buffer object to the driver!  <data> may be null! */
    ctx->Driver.BufferData( ctx, target, size, data, usage, bufObj );
 }
@@ -982,6 +984,8 @@ _mesa_BufferSubDataARB(GLenum target, GLintptrARB offset,
       return;
    }
 
+   bufObj->Written = GL_TRUE;
+
    ASSERT(ctx->Driver.BufferSubData);
    ctx->Driver.BufferSubData( ctx, target, offset, size, data, bufObj );
 }
@@ -1046,6 +1050,8 @@ _mesa_MapBufferARB(GLenum target, GLenum access)
    }
 
    bufObj->Access = access;
+   if (access == GL_WRITE_ONLY_ARB || access == GL_READ_WRITE_ARB)
+      bufObj->Written = GL_TRUE;
 
    return bufObj->Pointer;
 }
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 368acde7a1..276bc42eba 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1506,6 +1506,7 @@ struct gl_buffer_object
    GLsizeiptrARB Size;       /**< Size of storage in bytes */
    GLubyte *Data;            /**< Location of storage either in RAM or VRAM. */
    GLboolean OnCard;         /**< Is buffer in VRAM? (hardware drivers) */
+   GLboolean Written;        /**< Ever written to? (for debugging) */
 };
 
 
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