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render/vulkan: New staging buffer implementation

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Implement a ring-buffer that uses timeline points to track and release
allocated spans. We add larger ring-buffers when it fills, and remove
them when they have been unused for many collection cycles.

Signed-off-by: Kenny Levinsen <kl@kl.wtf>
This commit is contained in:
Kenny Levinsen 2026-04-12 17:10:40 +02:00 • committed by Félix Poisot
parent 02abf1cd28
commit 4ee896af99
4 changed files with 211 additions and 155 deletions
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15
render/vulkan/pass.c
View file

@ -595,14 +595,7 @@ static bool render_pass_submit(struct wlr_render_pass *wlr_pass) {
free(render_wait);
struct wlr_vk_shared_buffer *stage_buf, *stage_buf_tmp;
wl_list_for_each_safe(stage_buf, stage_buf_tmp, &renderer->stage.buffers, link) {
if (stage_buf->allocs.size == 0) {
continue;
}
wl_list_remove(&stage_buf->link);
wl_list_insert(&stage_cb->stage_buffers, &stage_buf->link);
}
vulkan_stage_mark_submit(renderer, render_timeline_point);
if (!vulkan_sync_render_pass_release(renderer, pass)) {
wlr_log(WLR_ERROR, "Failed to sync render buffer");
@ -1056,13 +1049,13 @@ static bool create_3d_lut_image(struct wlr_vk_renderer *renderer,
size_t size = dim_len * dim_len * dim_len * bytes_per_block;
struct wlr_vk_buffer_span span = vulkan_get_stage_span(renderer,
size, bytes_per_block);
if (!span.buffer || span.alloc.size != size) {
if (!span.buffer || span.size != size) {
wlr_log(WLR_ERROR, "Failed to retrieve staging buffer");
goto fail_imageview;
}
float sample_range = 1.0f / (dim_len - 1);
char *map = (char *)span.buffer->cpu_mapping + span.alloc.start;
char *map = (char *)span.buffer->cpu_mapping + span.offset;
float *dst = (float *)map;
for (size_t b_index = 0; b_index < dim_len; b_index++) {
for (size_t g_index = 0; g_index < dim_len; g_index++) {
@ -1092,7 +1085,7 @@ static bool create_3d_lut_image(struct wlr_vk_renderer *renderer,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_PIPELINE_STAGE_TRANSFER_BIT,
VK_ACCESS_TRANSFER_WRITE_BIT);
VkBufferImageCopy copy = {
.bufferOffset = span.alloc.start,
.bufferOffset = span.offset,
.imageExtent.width = dim_len,
.imageExtent.height = dim_len,
.imageExtent.depth = dim_len,