diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_cb_bufferobjects.c')
-rw-r--r-- | mesalib/src/mesa/state_tracker/st_cb_bufferobjects.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_cb_bufferobjects.c b/mesalib/src/mesa/state_tracker/st_cb_bufferobjects.c index 49c4b903e..02624617b 100644 --- a/mesalib/src/mesa/state_tracker/st_cb_bufferobjects.c +++ b/mesalib/src/mesa/state_tracker/st_cb_bufferobjects.c @@ -447,6 +447,33 @@ st_copy_buffer_subdata(struct gl_context *ctx, srcObj->buffer, 0, &box); } +/** + * Called via glClearBufferSubData(). + */ +static void +st_clear_buffer_subdata(struct gl_context *ctx, + GLintptr offset, GLsizeiptr size, + const GLvoid *clearValue, + GLsizeiptr clearValueSize, + struct gl_buffer_object *bufObj) +{ + struct pipe_context *pipe = st_context(ctx)->pipe; + struct st_buffer_object *buf = st_buffer_object(bufObj); + static const char zeros[16] = {0}; + + if (!pipe->clear_buffer) { + _mesa_buffer_clear_subdata(ctx, offset, size, + clearValue, clearValueSize, bufObj); + return; + } + + if (!clearValue) + clearValue = zeros; + + pipe->clear_buffer(pipe, buf->buffer, offset, size, + clearValue, clearValueSize); +} + /* TODO: if buffer wasn't created with appropriate usage flags, need * to recreate it now and copy contents -- or possibly create a @@ -476,6 +503,7 @@ st_init_bufferobject_functions(struct dd_function_table *functions) functions->FlushMappedBufferRange = st_bufferobj_flush_mapped_range; functions->UnmapBuffer = st_bufferobj_unmap; functions->CopyBufferSubData = st_copy_buffer_subdata; + functions->ClearBufferSubData = st_clear_buffer_subdata; /* For GL_APPLE_vertex_array_object */ functions->NewArrayObject = _mesa_new_vao; |