[Mesa-dev] [PATCH 1/3] mesa: add driver interface for glInvalidateBuffer(Sub)Data

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/mesa/main/bufferobj.c | 14 ++++++--------
 src/mesa/main/dd.h        |  8 +++++++-
 2 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 2e9e059..e7b6382 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -2813,10 +2813,9 @@ _mesa_InvalidateBufferSubData(GLuint buffer, GLintptr offset,
       return;
    }
 
-   /* We don't actually do anything for this yet.  Just return after
-    * validating the parameters and generating the required errors.
-    */
-   return;
+   if (ctx->Driver.InvalidateBufferSubData) {
+      ctx->Driver.InvalidateBufferSubData(ctx, bufObj, offset, length);
+   }
 }
 
 void GLAPIENTRY
@@ -2847,8 +2846,7 @@ _mesa_InvalidateBufferData(GLuint buffer)
       return;
    }
 
-   /* We don't actually do anything for this yet.  Just return after
-    * validating the parameters and generating the required errors.
-    */
-   return;
+   if (ctx->Driver.InvalidateBufferSubData) {
+      ctx->Driver.InvalidateBufferSubData(ctx, bufObj, 0, bufObj->Size);
+   }
 }
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 9715241..a2d2696 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -957,7 +957,13 @@ struct dd_function_table {
                             GLenum access, GLenum format);
 
    void (*MemoryBarrier)(struct gl_context *ctx, GLbitfield barriers);
-   /** @} */
+
+   /** @}
+    * \name GL_ARB_invalidate_subdata interface.
+    */
+   void (*InvalidateBufferSubData)(struct gl_context *ctx,
+                                   struct gl_buffer_object *bufObj,
+                                   unsigned offset, unsigned length);
 };
 
 
-- 
1.8.3.2