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Model preview: AVA2 render-target window on a Vulkan colour target

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Port of AVA2's CRenderTarget / GrpRenderTargetTexture / renderTarget module.
The host gains an RGBA8 offscreen colour pass for D3D colour render targets;
mt_preview shows wearable items on every allowed race and monsters with
motions, reached by X+click in the inventory and shop and from the wiki.
Player races are created as TYPE_PC so their parts exist.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
shenlei
2026-10-16 04:48:07 +09:00
co-authored by Claude Opus 5.5
parent 32372c2a73
commit 84404cf1f1
25 changed files with 1602 additions and 34 deletions
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src/host/vk_resources.cpp
+18 -7
View File
@@ -270,15 +270,23 @@ void VulkanWindow::ensure_ui_capacity(std::size_t command_count) {
}
VulkanWindow::RenderTarget* VulkanWindow::get_render_target(const std::string& name) {
if (auto it = render_targets_.find(name); it != render_targets_.end()) return &it->second;
if (auto it = render_targets_.find(name); it != render_targets_.end()) {
it->second.last_used_frame = frame_number_;
return &it->second;
}
unsigned id = 0, w = 0, h = 0;
if (std::sscanf(name.c_str(), "rt:%u:%ux%u", &id, &w, &h) != 3 || !w || !h || w > 4096 || h > 4096)
int end = 0;
if (std::sscanf(name.c_str(), "rt:%u:%ux%u%n", &id, &w, &h, &end) != 3 || !w || !h || w > 4096 || h > 4096)
return nullptr;
const bool color = name.compare(std::size_t(end), std::string::npos, ":c") == 0;
if (!color && name[std::size_t(end)] != '\0') return nullptr;
RenderTarget& target = render_targets_[name];
target.width = w;
target.height = h;
target.color = color;
target.last_used_frame = frame_number_;
auto make_image = [&](VkFormat format, VkImageUsageFlags usage, VkImageAspectFlags aspect,
VkImage& image, VkDeviceMemory& memory, VkImageView& view) {
VkImage& image, VkDeviceMemory& memory, VkImageView& view, bool opaque = false) {
VkImageCreateInfo info{VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO};
info.imageType = VK_IMAGE_TYPE_2D;
info.format = format;
@@ -299,18 +307,20 @@ VulkanWindow::RenderTarget* VulkanWindow::get_render_target(const std::string& n
VkImageViewCreateInfo view_info{VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO};
view_info.image = image; view_info.viewType = VK_IMAGE_VIEW_TYPE_2D; view_info.format = format;
view_info.subresourceRange = {aspect, 0, 1, 0, 1};
// A colour target is D3DFMT_X8R8G8B8: sampled alpha is always 1.
if (opaque) view_info.components.a = VK_COMPONENT_SWIZZLE_ONE;
check(vkCreateImageView(device_, &view_info, nullptr, &view), "vkCreateImageView render target");
};
make_image(offscreen_format_,
make_image(color ? VK_FORMAT_R8G8B8A8_UNORM : offscreen_format_,
VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT |
VK_IMAGE_USAGE_TRANSFER_SRC_BIT,
VK_IMAGE_ASPECT_COLOR_BIT, target.texture.image, target.texture.memory, target.texture.view);
VK_IMAGE_ASPECT_COLOR_BIT, target.texture.image, target.texture.memory, target.texture.view, color);
make_image(VK_FORMAT_D32_SFLOAT,
VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT,
VK_IMAGE_ASPECT_DEPTH_BIT, target.depth_image, target.depth_memory, target.depth_view);
const VkImageView views[2] = {target.texture.view, target.depth_view};
VkFramebufferCreateInfo fb{VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO};
fb.renderPass = offscreen_pass_;
fb.renderPass = color ? offscreen_color_pass_ : offscreen_pass_;
fb.attachmentCount = 2; fb.pAttachments = views;
fb.width = w; fb.height = h; fb.layers = 1;
check(vkCreateFramebuffer(device_, &fb, nullptr, &target.framebuffer), "vkCreateFramebuffer render target");
@@ -343,7 +353,8 @@ void VulkanWindow::initialize_render_target(RenderTarget& target) {
barriers[1].subresourceRange = {VK_IMAGE_ASPECT_DEPTH_BIT, 0, 1, 0, 1};
vkCmdPipelineBarrier(f_->command, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT,
0, 0, nullptr, 0, nullptr, 2, barriers);
const VkClearColorValue white{{1.0f, 1.0f, 1.0f, 1.0f}};
const float shade = target.color ? 0.0f : 1.0f;
const VkClearColorValue white{{shade, shade, shade, 1.0f}};
const VkClearDepthStencilValue far{1.0f, 0};
vkCmdClearColorImage(f_->command, target.texture.image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &white, 1,
&barriers[0].subresourceRange);