Initial claude dump

engine/src/resources/resource_registry_ref.cpp

@@ -1,5 +1,9 @@
+#include <stb_image.h>
+
 #include <sophia/resource_registry_ref.hpp>
 #include <sophia/util/assert.hpp>
+#include <sophia/util/logger.hpp>
+#include <stdexcept>
 
 #include "resources/resource_registry.hpp"
 
@@ -14,6 +18,26 @@ MeshHandle ResourceRegistryRef::load<Mesh>(const std::string& path) {
   return MeshHandle{};
 }
 
+template <>
+TextureHandle ResourceRegistryRef::load<Texture>(const std::string& path) {
+  int width = 0;
+  int height = 0;
+  int channels = 0;
+  // Always decode to RGBA8, whatever the file has.
+  stbi_uc* pixels = stbi_load(path.c_str(), &width, &height, &channels, 4);
+  if (pixels == nullptr) {
+    log::fatal("failed to load texture", path, "-", stbi_failure_reason());
+    throw std::runtime_error("failed to load texture: " + path);
+  }
+
+  auto size = static_cast<size_t>(width) * static_cast<size_t>(height) * 4;
+  TextureHandle handle = registry->texturePool.create(
+      registry->device, static_cast<u32>(width), static_cast<u32>(height),
+      std::span<const u8>{pixels, size});
+  stbi_image_free(pixels);
+  return handle;
+}
+
 template <>
 void ResourceRegistryRef::release<Mesh>(MeshHandle handle) {
   registry->meshPool.release(handle);
@@ -24,6 +48,15 @@ void ResourceRegistryRef::release<RenderTarget>(RenderTargetHandle handle) {
   registry->renderTargetPool.release(handle);
 }
 
+template <>
+void ResourceRegistryRef::release<Texture>(TextureHandle handle) {
+  SOPHIA_ASSERT(handle != registry->whiteTexture,
+                "the built-in white texture cannot be released");
+  // Frames in flight may still be sampling it.
+  registry->device.waitIdle();
+  registry->texturePool.release(handle);
+}
+
 MeshHandle ResourceRegistryRef::createResource(
     std::type_identity<Mesh>, std::vector<CanvasVertex> vertices,
     std::vector<u32> indices) {
@@ -42,6 +75,13 @@ RenderTargetHandle ResourceRegistryRef::createResource(
   return registry->renderTargetPool.create(width, height);
 }
 
+TextureHandle ResourceRegistryRef::createResource(std::type_identity<Texture>,
+                                                  u32 width, u32 height,
+                                                  std::vector<u8> pixels) {
+  return registry->texturePool.create(registry->device, width, height,
+                                      std::span<const u8>{pixels});
+}
+
 void ResourceRegistryRef::requestResize(RenderTargetHandle handle, u32 width,
                                         u32 height) {
   registry->renderTargetPool.get(handle).requestResize(width, height);
@@ -56,4 +96,14 @@ bool ResourceRegistryRef::isAlive(RenderTargetHandle handle) const {
   return registry->renderTargetPool.isAlive(handle);
 }
 
+glm::vec2 ResourceRegistryRef::getExtent(TextureHandle handle) const {
+  const Texture& texture = registry->texturePool.get(handle);
+  return {static_cast<float>(texture.getWidth()),
+          static_cast<float>(texture.getHeight())};
+}
+
+bool ResourceRegistryRef::isAlive(TextureHandle handle) const {
+  return registry->texturePool.isAlive(handle);
+}
+
 }  // namespace sophia