diff options
author | Manuel Stoeckl <code@mstoeckl.com> | 2022-11-25 12:28:43 -0500 |
---|---|---|
committer | Manuel Stoeckl <code@mstoeckl.com> | 2022-11-25 12:29:02 -0500 |
commit | c02872e033b431d9f02a240abeebdf0aaa043ea6 (patch) | |
tree | 2f02aec2f6eb51ce636f3836e020579937d44c2d /render | |
parent | f0375eed24276e27e036f724c9fde5d344fc140a (diff) |
render/vulkan: align staging buffers for texture upload
vkCmdCopyBufferToImage requires that the buffer offset be a multiple
of the texel block size, which for single plane uncompressed formats
is the same as the number of bytes per pixel. This commit adds an
alignment parameter to vulkan_get_stage_span which ensures that the
provided span (and the sequence of image copy operations derived which
use it) have this alignment.
Diffstat (limited to 'render')
-rw-r--r-- | render/vulkan/renderer.c | 6 | ||||
-rw-r--r-- | render/vulkan/texture.c | 2 |
2 files changed, 6 insertions, 2 deletions
diff --git a/render/vulkan/renderer.c b/render/vulkan/renderer.c index 0ef256c2..4a6f9bdf 100644 --- a/render/vulkan/renderer.c +++ b/render/vulkan/renderer.c @@ -200,7 +200,7 @@ static void release_stage_allocations(struct wlr_vk_renderer *renderer) { } struct wlr_vk_buffer_span vulkan_get_stage_span(struct wlr_vk_renderer *r, - VkDeviceSize size) { + VkDeviceSize size, VkDeviceSize alignment) { // try to find free span // simple greedy allocation algorithm - should be enough for this usecase // since all allocations are freed together after the frame @@ -215,6 +215,10 @@ struct wlr_vk_buffer_span vulkan_get_stage_span(struct wlr_vk_renderer *r, } assert(start <= buf->buf_size); + + // ensure the proposed start is a multiple of alignment + start += alignment - 1 - ((start + alignment - 1) % alignment); + if (buf->buf_size - start < size) { continue; } diff --git a/render/vulkan/texture.c b/render/vulkan/texture.c index 45e3fec9..9437cafc 100644 --- a/render/vulkan/texture.c +++ b/render/vulkan/texture.c @@ -73,7 +73,7 @@ static bool write_pixels(struct wlr_vk_texture *texture, } // get staging buffer - struct wlr_vk_buffer_span span = vulkan_get_stage_span(renderer, bsize); + struct wlr_vk_buffer_span span = vulkan_get_stage_span(renderer, bsize, bytespb); if (!span.buffer || span.alloc.size != bsize) { wlr_log(WLR_ERROR, "Failed to retrieve staging buffer"); free(copies); |