diff options
| -rw-r--r-- | chickadee/render/buffer.scm | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/chickadee/render/buffer.scm b/chickadee/render/buffer.scm index 04598df..4d196d9 100644 --- a/chickadee/render/buffer.scm +++ b/chickadee/render/buffer.scm @@ -209,13 +209,12 @@ the vertex buffer to be updated with new vertex data. The vertex buffer data back to the GPU." (unless (buffer-mapped? buffer) ;; Don't map a buffer that is already mapped! (let ((target (buffer-target-gl buffer)) - (length (buffer-length buffer)) - (usage (buffer-usage-gl buffer))) + (length (buffer-length buffer))) (gpu-state-set! *buffer-state* buffer) - (when (eq? usage 'stream) + (when (eq? (buffer-usage buffer) 'stream) ;; Orphan the buffer to avoid implicit synchronization. ;; See: https://www.opengl.org/wiki/Buffer_Object_Streaming#Buffer_re-specification - (gl-buffer-data target length %null-pointer usage)) + (gl-buffer-data target length %null-pointer (buffer-usage-gl buffer))) (let ((ptr (gl-map-buffer target (version-1-5 read-write)))) (set-buffer-data! buffer (pointer->bytevector ptr length)))))) |