diff options
Diffstat (limited to 'cnn_v3/src/gbuffer_effect.cc')
| -rw-r--r-- | cnn_v3/src/gbuffer_effect.cc | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/cnn_v3/src/gbuffer_effect.cc b/cnn_v3/src/gbuffer_effect.cc index b059915..829c199 100644 --- a/cnn_v3/src/gbuffer_effect.cc +++ b/cnn_v3/src/gbuffer_effect.cc @@ -30,6 +30,9 @@ struct GBufObjectData { static_assert(sizeof(GBufObjectData) == sizeof(float) * 40, "GBufObjectData must be 160 bytes"); +// Reusable CPU staging buffer (single-threaded demo — no concurrency needed). +static GBufObjectData s_obj_staging[kGBufMaxObjects]; + // GlobalUniforms struct mirroring renderer.h struct GBufGlobalUniforms { mat4 view_proj; @@ -446,23 +449,19 @@ void GBufferEffect::upload_scene_data(const Scene& scene, wgpuQueueWriteBuffer(ctx_.queue, global_uniforms_buf_.buffer, 0, &gu, sizeof(GBufGlobalUniforms)); - // Upload object data. + // Upload object data (no per-frame heap alloc — reuse s_obj_staging). if (num_objects > 0) { ensure_objects_buffer(num_objects); - std::vector<GBufObjectData> obj_data; - obj_data.reserve((size_t)num_objects); for (int i = 0; i < num_objects; ++i) { const Object3D& obj = scene.objects[(size_t)i]; const mat4 m = obj.get_model_matrix(); - GBufObjectData d; - d.model = m; - d.inv_model = m.inverse(); - d.color = obj.color; - d.params = vec4((float)(int)obj.type, 0.0f, 0.0f, 0.0f); - obj_data.push_back(d); + s_obj_staging[i].model = m; + s_obj_staging[i].inv_model = m.inverse(); + s_obj_staging[i].color = obj.color; + s_obj_staging[i].params = vec4((float)(int)obj.type, 0.0f, 0.0f, 0.0f); } wgpuQueueWriteBuffer(ctx_.queue, objects_buf_.buffer, 0, - obj_data.data(), + s_obj_staging, (size_t)num_objects * sizeof(GBufObjectData)); } } |