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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, upgrading the buffer if it fills and shrinking it if it
has been 4x too large for many collections.
This commit is contained in:
Kenny Levinsen 2026-04-12 17:10:40 +02:00
parent e8c03e9ce9
commit 1ec740692f
4 changed files with 267 additions and 155 deletions
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6
render/vulkan/texture.c
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@ -72,16 +72,16 @@ static bool write_pixels(struct wlr_vk_texture *texture,
// get staging buffer
struct wlr_vk_buffer_span span = vulkan_get_stage_span(renderer, bsize, format_info->bytes_per_block);
if (!span.buffer || span.alloc.size != bsize) {
if (!span.buffer || span.size != bsize) {
wlr_log(WLR_ERROR, "Failed to retrieve staging buffer");
free(copies);
return false;
}
char *map = (char*)span.buffer->cpu_mapping + span.alloc.start;
char *map = (char*)span.buffer->cpu_mapping + span.offset;
// upload data
uint32_t buf_off = span.alloc.start;
uint32_t buf_off = span.offset;
for (int i = 0; i < rects_len; i++) {
pixman_box32_t rect = rects[i];
uint32_t width = rect.x2 - rect.x1;