mesa: Track buffer object use also for VAO usage.

We already track the usage history for buffer objects
in a lot of aspects. Add GL_ARRAY_BUFFER and
GL_ELEMENT_ARRAY_BUFFER to gl_buffer_object::UsageHistory.

Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Mathias Fröhlich <Mathias.Froehlich@web.de>

src/mesa/main/arrayobj.c

@@ -1213,8 +1213,10 @@ vertex_array_element_buffer(struct gl_context *ctx, GLuint vaobj, GLuint buffer,
       bufObj = ctx->Shared->NullBufferObj;
    }
 
-   if (bufObj)
+   if (bufObj) {
+      bufObj->UsageHistory |= USAGE_ELEMENT_ARRAY_BUFFER;
       _mesa_reference_buffer_object(ctx, &vao->IndexBufferObj, bufObj);
+   }
 }
 
 

src/mesa/main/bufferobj.c

@@ -113,8 +113,13 @@ get_buffer_target(struct gl_context *ctx, GLenum target)
 
    switch (target) {
    case GL_ARRAY_BUFFER_ARB:
+      if (ctx->Array.ArrayBufferObj)
+         ctx->Array.ArrayBufferObj->UsageHistory |= USAGE_ARRAY_BUFFER;
       return &ctx->Array.ArrayBufferObj;
    case GL_ELEMENT_ARRAY_BUFFER_ARB:
+      if (ctx->Array.VAO->IndexBufferObj)
+         ctx->Array.VAO->IndexBufferObj->UsageHistory
+            |= USAGE_ELEMENT_ARRAY_BUFFER;
       return &ctx->Array.VAO->IndexBufferObj;
    case GL_PIXEL_PACK_BUFFER_EXT:
       return &ctx->Pack.BufferObj;

src/mesa/main/mtypes.h

@@ -1339,7 +1339,9 @@ typedef enum
    USAGE_SHADER_STORAGE_BUFFER = 0x8,
    USAGE_TRANSFORM_FEEDBACK_BUFFER = 0x10,
    USAGE_PIXEL_PACK_BUFFER = 0x20,
-   USAGE_DISABLE_MINMAX_CACHE = 0x40,
+   USAGE_ARRAY_BUFFER = 0x40,
+   USAGE_ELEMENT_ARRAY_BUFFER = 0x80,
+   USAGE_DISABLE_MINMAX_CACHE = 0x100,
 } gl_buffer_usage;
 
 

src/mesa/main/varray.c

@@ -209,10 +209,12 @@ _mesa_bind_vertex_buffer(struct gl_context *ctx,
       binding->Offset = offset;
       binding->Stride = stride;
 
-      if (!_mesa_is_bufferobj(vbo))
+      if (!_mesa_is_bufferobj(vbo)) {
          vao->VertexAttribBufferMask &= ~binding->_BoundArrays;
-      else
+      } else {
          vao->VertexAttribBufferMask |= binding->_BoundArrays;
+         vbo->UsageHistory |= USAGE_ARRAY_BUFFER;
+      }
 
       vao->NewArrays |= vao->Enabled & binding->_BoundArrays;
       if (vao == ctx->Array.VAO)