diff options
Diffstat (limited to 'src/gallium/drivers/swr/swr_state.cpp')
| -rw-r--r-- | src/gallium/drivers/swr/swr_state.cpp | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/src/gallium/drivers/swr/swr_state.cpp b/src/gallium/drivers/swr/swr_state.cpp index 08549e51a18..316872581db 100644 --- a/src/gallium/drivers/swr/swr_state.cpp +++ b/src/gallium/drivers/swr/swr_state.cpp @@ -1247,13 +1247,24 @@ swr_update_derived(struct pipe_context *pipe, pitch = vb->stride; if (!vb->is_user_buffer) { - /* VBO - * size is based on buffer->width0 rather than info.max_index - * to prevent having to validate VBO on each draw */ - size = vb->buffer.resource->width0; - elems = size / pitch; - partial_inbounds = size % pitch; - min_vertex_index = 0; + /* VBO */ + if (!pitch) { + /* If pitch=0 (ie vb->stride), buffer contains a single + * constant attribute. Use the stream_pitch which was + * calculated during creation of vertex_elements_state for the + * size of the attribute. */ + size = ctx->velems->stream_pitch[i]; + elems = 1; + partial_inbounds = 0; + min_vertex_index = 0; + } else { + /* size is based on buffer->width0 rather than info.max_index + * to prevent having to validate VBO on each draw. */ + size = vb->buffer.resource->width0; + elems = size / pitch; + partial_inbounds = size % pitch; + min_vertex_index = 0; + } p_data = swr_resource_data(vb->buffer.resource) + vb->buffer_offset; } else { |