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render/vulkan: update shm texture data in one batch

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This commit is contained in:
Manuel Stoeckl 2022-11-19 08:44:56 -05:00
parent 4ff46e6cf9
commit b97ef59393
1 changed files with 84 additions and 70 deletions
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154
render/vulkan/texture.c
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@ -36,34 +36,47 @@ static VkImageAspectFlagBits mem_plane_aspect(unsigned i) {
// Will transition the texture to shaderReadOnlyOptimal layout for reading
// from fragment shader later on
static bool write_pixels(struct wlr_vk_texture *texture,
uint32_t stride, uint32_t width, uint32_t height, uint32_t src_x,
uint32_t src_y, uint32_t dst_x, uint32_t dst_y, const void *vdata,
uint32_t stride, const pixman_region32_t *region, const void *vdata,
VkImageLayout old_layout, VkPipelineStageFlags src_stage,
VkAccessFlags src_access) {
VkResult res;
struct wlr_vk_renderer *renderer = texture->renderer;
VkDevice dev = texture->renderer->dev->dev;
// make sure assumptions are met
assert(src_x + width <= texture->wlr_texture.width);
assert(src_y + height <= texture->wlr_texture.height);
assert(dst_x + width <= texture->wlr_texture.width);
assert(dst_y + height <= texture->wlr_texture.height);
const struct wlr_pixel_format_info *format_info = drm_get_pixel_format_info(
texture->format->drm_format);
assert(format_info);
// deferred upload by transfer; using staging buffer
// calculate maximum side needed
uint32_t bsize = 0;
unsigned bytespb = format_info->bpp / 8;
bsize += height * bytespb * width;
// deferred upload by transfer; using staging buffer
// calculate maximum side needed
int rects_len = 0;
const pixman_box32_t *rects = pixman_region32_rectangles(region, &rects_len);
for (int i = 0; i < rects_len; i++) {
pixman_box32_t rect = rects[i];
uint32_t width = rect.x2 - rect.x1;
uint32_t height = rect.y2 - rect.y1;
// make sure assumptions are met
assert((uint32_t)rect.x2 <= texture->wlr_texture.width);
assert((uint32_t)rect.y2 <= texture->wlr_texture.height);
bsize += height * bytespb * width;
}
VkBufferImageCopy *copies = calloc((size_t)rects_len, sizeof(*copies));
if (!copies) {
wlr_log(WLR_ERROR, "Failed to allocate image copy parameters");
return false;
}
// get staging buffer
struct wlr_vk_buffer_span span = vulkan_get_stage_span(renderer, bsize);
if (!span.buffer || span.alloc.size != bsize) {
wlr_log(WLR_ERROR, "Failed to retrieve staging buffer");
free(copies);
return false;
}
@ -72,10 +85,62 @@ static bool write_pixels(struct wlr_vk_texture *texture,
bsize, 0, &vmap);
if (res != VK_SUCCESS) {
wlr_vk_error("vkMapMemory", res);
free(copies);
return false;
}
char *map = (char *)vmap;
// upload data
uint32_t buf_off = span.alloc.start + (map - (char *)vmap);
for (int i = 0; i < rects_len; i++) {
pixman_box32_t rect = rects[i];
uint32_t width = rect.x2 - rect.x1;
uint32_t height = rect.y2 - rect.y1;
uint32_t src_x = rect.x1;
uint32_t src_y = rect.y1;
uint32_t packed_stride = bytespb * width;
// write data into staging buffer span
const char *pdata = vdata; // data iterator
pdata += stride * src_y;
pdata += bytespb * src_x;
if (src_x == 0 && width == texture->wlr_texture.width &&
stride == packed_stride) {
memcpy(map, pdata, packed_stride * height);
map += packed_stride * height;
} else {
for (unsigned i = 0u; i < height; ++i) {
memcpy(map, pdata, packed_stride);
pdata += stride;
map += packed_stride;
}
}
copies[i] = (VkBufferImageCopy) {
.imageExtent.width = width,
.imageExtent.height = height,
.imageExtent.depth = 1,
.imageOffset.x = src_x,
.imageOffset.y = src_y,
.imageOffset.z = 0,
.bufferOffset = buf_off,
.bufferRowLength = width,
.bufferImageHeight = height,
.imageSubresource.mipLevel = 0,
.imageSubresource.baseArrayLayer = 0,
.imageSubresource.layerCount = 1,
.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
};
buf_off += height * packed_stride;
}
assert((uint32_t)(map - (char *)vmap) == bsize);
vkUnmapMemory(dev, span.buffer->memory);
// record staging cb
// will be executed before next frame
VkCommandBuffer cb = vulkan_record_stage_cb(renderer);
@ -84,48 +149,8 @@ static bool write_pixels(struct wlr_vk_texture *texture,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_PIPELINE_STAGE_TRANSFER_BIT,
VK_ACCESS_TRANSFER_WRITE_BIT);
// upload data
const char *pdata = vdata; // data iterator
uint32_t packed_stride = bytespb * width;
uint32_t buf_off = span.alloc.start + (map - (char *)vmap);
// write data into staging buffer span
pdata += stride * src_y;
pdata += bytespb * src_x;
if (src_x == 0 && width == texture->wlr_texture.width &&
stride == packed_stride) {
memcpy(map, pdata, packed_stride * height);
map += packed_stride * height;
} else {
for (unsigned i = 0u; i < height; ++i) {
memcpy(map, pdata, packed_stride);
pdata += stride;
map += packed_stride;
}
}
assert((uint32_t)(map - (char *)vmap) == bsize);
vkUnmapMemory(dev, span.buffer->memory);
VkBufferImageCopy copy = {
.imageExtent.width = width,
.imageExtent.height = height,
.imageExtent.depth = 1,
.imageOffset.x = dst_x,
.imageOffset.y = dst_y,
.imageOffset.z = 0,
.bufferOffset = buf_off,
.bufferRowLength = width,
.bufferImageHeight = height,
.imageSubresource.mipLevel = 0,
.imageSubresource.baseArrayLayer = 0,
.imageSubresource.layerCount = 1,
.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
};
vkCmdCopyBufferToImage(cb, span.buffer->buffer, texture->image,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &copy);
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, (uint32_t)rects_len, copies);
vulkan_change_layout(cb, texture->image,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_PIPELINE_STAGE_TRANSFER_BIT,
VK_ACCESS_TRANSFER_WRITE_BIT,
@ -133,6 +158,8 @@ static bool write_pixels(struct wlr_vk_texture *texture,
VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT, VK_ACCESS_SHADER_READ_BIT);
texture->last_used = renderer->frame;
free(copies);
return true;
}
@ -155,22 +182,8 @@ static bool vulkan_texture_update_from_buffer(struct wlr_texture *wlr_texture,
goto out;
}
int rects_len = 0;
const pixman_box32_t *rects = pixman_region32_rectangles(damage, &rects_len);
for (int i = 0; i < rects_len; i++) {
pixman_box32_t rect = rects[i];
uint32_t width = rect.x2 - rect.x1;
uint32_t height = rect.y2 - rect.y1;
// TODO: only map memory once
ok = write_pixels(texture, stride, width, height, rect.x1, rect.y1,
rect.x1, rect.y1, data, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, VK_ACCESS_SHADER_READ_BIT);
if (!ok) {
goto out;
}
}
ok = write_pixels(texture, stride, damage, data, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, VK_ACCESS_SHADER_READ_BIT);
out:
wlr_buffer_end_data_ptr_access(buffer);
@ -376,8 +389,9 @@ static struct wlr_texture *vulkan_texture_from_pixels(
vkUpdateDescriptorSets(dev, 1, &ds_write, 0, NULL);
// write data
if (!write_pixels(texture, stride,
width, height, 0, 0, 0, 0, data, VK_IMAGE_LAYOUT_UNDEFINED,
pixman_region32_t region;
pixman_region32_init_rect(&region, 0, 0, width, height);
if (!write_pixels(texture, stride, &region, data, VK_IMAGE_LAYOUT_UNDEFINED,
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, 0)) {
goto error;
}