refactor: centralize model factories and defaults (#2198)

src/model/integrations/flux3.cpp

@@ -0,0 +1,38 @@
+#include "model/diffusion/flux3.hpp"
+#include "conditioning/conditioner.hpp"
+#include "model_definition.h"
+#include "pipeline/model_builders.h"
+
+static bool build_flux3(const sd::model_builders::Context& ctx, const TokenizerConfig& tokenizers, sd::model_builders::CoreRunners& result) {
+    const auto* sd_ctx_params      = &ctx.params;
+    const auto& tensor_storage_map = ctx.tensor_storage_map;
+    const auto version             = ctx.version;
+    const auto& weight_manager     = ctx.weight_manager;
+    result.conditioner             = std::make_shared<LLMEmbedder>(ctx.backends.runtime_backend(SDBackendModule::TE),
+                                                       tensor_storage_map, version, "", false, weight_manager, tokenizers);
+    result.diffusion               = std::make_shared<Flux3::Flux3Runner>(ctx.backends.runtime_backend(SDBackendModule::DIFFUSION),
+                                                            tensor_storage_map, "model.diffusion_model", weight_manager);
+    return true;
+}
+
+const std::vector<ModelDefinition>& flux3_definitions() {
+    static const std::vector<ModelDefinition> definitions = [] {
+        std::vector<ModelDefinition> result;
+        {
+            ModelDefinition definition;
+            definition.version                        = VERSION_FLUX3;
+            definition.geometry                       = {1, 128, 3};
+            definition.ref_image_preset               = "flux2";
+            definition.name                           = "Flux.3 Image Klein";
+            definition.traits.is_dit                  = true;
+            definition.traits.vae_kind                = ModelVAEKind::FLUX2;
+            definition.sampling                       = {FLUX3_FLOW_PRED, 6.93f};
+            definition.sampling.default_sample_method = EULER_SAMPLE_METHOD;
+            definition.sampling.default_scheduler     = DISCRETE_SCHEDULER;
+            definition.build                          = build_flux3;
+            result.push_back(std::move(definition));
+        }
+        return result;
+    }();
+    return definitions;
+}