◆ create_pipeline()

RenderPipelineID MayaFlux::Portal::Graphics::RenderFlow::create_pipeline ( const RenderPipelineConfig & config )
Create graphics pipeline with full configuration.
Parameters
config Complete pipeline configuration
Returns: Pipeline ID or INVALID_RENDER_PIPELINE on error
Definition at line 377 of file RenderFlow.cpp.
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::Rendering,
            "RenderFlow not initialized");
        return INVALID_RENDER_PIPELINE;
    }
 
    if (config.vertex_shader == INVALID_SHADER) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::Rendering,
            "Vertex shader required for graphics pipeline");
        return INVALID_RENDER_PIPELINE;
    }
 
    if (config.render_pass == INVALID_RENDER_PASS) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::Rendering,
            "Render pass required for graphics pipeline");
        return INVALID_RENDER_PASS;
    }
 
    auto rp_it = m_render_passes.find(config.render_pass);
    if (rp_it == m_render_passes.end()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::Rendering,
            "Invalid render pass ID: {}", config.render_pass);
        return INVALID_RENDER_PIPELINE;
    }
 
    Core::GraphicsPipelineConfig vk_config;
 
    vk_config.vertex_shader = m_shader_foundry->get_vk_shader_module(config.vertex_shader);
    if (config.fragment_shader != INVALID_SHADER) {
        vk_config.fragment_shader = m_shader_foundry->get_vk_shader_module(config.fragment_shader);
    }
    if (config.geometry_shader != INVALID_SHADER) {
        vk_config.geometry_shader = m_shader_foundry->get_vk_shader_module(config.geometry_shader);
    }
    if (config.tess_control_shader != INVALID_SHADER) {
        vk_config.tess_control_shader = m_shader_foundry->get_vk_shader_module(config.tess_control_shader);
    }
    if (config.tess_eval_shader != INVALID_SHADER) {
        vk_config.tess_evaluation_shader = m_shader_foundry->get_vk_shader_module(config.tess_eval_shader);
    }
 
    if (config.semantic_vertex_layout.has_value()) {
        MF_INFO(Journal::Component::Portal, Journal::Context::Rendering,
            "Pipeline using semantic VertexLayout ({} vertices, {} attributes)",
            config.semantic_vertex_layout->vertex_count,
            config.semantic_vertex_layout->attributes.size());
 
        auto [vk_bindings, vk_attributes] = translate_semantic_layout(
            config.semantic_vertex_layout.value());
 
        vk_config.vertex_bindings = vk_bindings;
        vk_config.vertex_attributes = vk_attributes;
        vk_config.use_vertex_shader_reflection = false;
 
    } else if (!config.vertex_bindings.empty() || !config.vertex_attributes.empty()) {
        MF_INFO(Journal::Component::Portal, Journal::Context::Rendering,
            "Pipeline using explicit vertex config ({} bindings, {} attributes)",
            config.vertex_bindings.size(), config.vertex_attributes.size());
 
        for (const auto& binding : config.vertex_bindings) {
            Core::VertexBinding vk_binding {};
            vk_binding.binding = binding.binding;
            vk_binding.stride = binding.stride;
            vk_binding.input_rate = binding.per_instance ? vk::VertexInputRate::eInstance : vk::VertexInputRate::eVertex;
            vk_config.vertex_bindings.push_back(vk_binding);
        }
 
        for (const auto& attr : config.vertex_attributes) {
            Core::VertexAttribute vk_attr {};
            vk_attr.location = attr.location;
            vk_attr.binding = attr.binding;
            vk_attr.format = attr.format;
            vk_attr.offset = attr.offset;
            vk_config.vertex_attributes.push_back(vk_attr);
        }
 
        vk_config.use_vertex_shader_reflection = false;
    } else {
        MF_DEBUG(Journal::Component::Portal, Journal::Context::Rendering,
            "Pipeline will use shader reflection for vertex input");
        vk_config.use_vertex_shader_reflection = config.use_vertex_shader_reflection;
    }
 
    vk_config.topology = to_vk_topology(config.topology);
    vk_config.primitive_restart_enable = false;
 
    vk_config.polygon_mode = to_vk_polygon_mode(config.rasterization.polygon_mode);
    vk_config.cull_mode = to_vk_cull_mode(config.rasterization.cull_mode);
    vk_config.front_face = config.rasterization.front_face_ccw ? vk::FrontFace::eCounterClockwise : vk::FrontFace::eClockwise;
    vk_config.line_width = config.rasterization.line_width;
    vk_config.depth_clamp_enable = config.rasterization.depth_clamp;
    vk_config.depth_bias_enable = config.rasterization.depth_bias;
 
    vk_config.depth_test_enable = config.depth_stencil.depth_test_enable;
    vk_config.depth_write_enable = config.depth_stencil.depth_write_enable;
    vk_config.depth_compare_op = to_vk_compare_op(config.depth_stencil.depth_compare_op);
    vk_config.stencil_test_enable = config.depth_stencil.stencil_test_enable;
 
    for (const auto& blend : config.blend_attachments) {
        Core::ColorBlendAttachment vk_blend;
        vk_blend.blend_enable = blend.blend_enable;
        vk_blend.src_color_blend_factor = to_vk_blend_factor(blend.src_color_factor);
        vk_blend.dst_color_blend_factor = to_vk_blend_factor(blend.dst_color_factor);
        vk_blend.color_blend_op = to_vk_blend_op(blend.color_blend_op);
        vk_blend.src_alpha_blend_factor = to_vk_blend_factor(blend.src_alpha_factor);
        vk_blend.dst_alpha_blend_factor = to_vk_blend_factor(blend.dst_alpha_factor);
        vk_blend.alpha_blend_op = to_vk_blend_op(blend.alpha_blend_op);
        vk_config.color_blend_attachments.push_back(vk_blend);
    }
 
    std::vector<vk::DescriptorSetLayout> layouts;
    for (const auto& desc_set : config.descriptor_sets) {
        std::vector<vk::DescriptorSetLayoutBinding> bindings;
        for (const auto& binding : desc_set) {
            vk::DescriptorSetLayoutBinding vk_binding;
            vk_binding.binding = binding.binding;
            vk_binding.descriptorType = binding.type;
            vk_binding.descriptorCount = 1;
            vk_binding.stageFlags = vk::ShaderStageFlagBits::eVertex | vk::ShaderStageFlagBits::eFragment;
            bindings.push_back(vk_binding);
        }
 
        vk::DescriptorSetLayoutCreateInfo layout_info;
        layout_info.bindingCount = static_cast<uint32_t>(bindings.size());
        layout_info.pBindings = bindings.data();
 
        auto layout = m_shader_foundry->get_device().createDescriptorSetLayout(layout_info);
        layouts.push_back(layout);
    }
    vk_config.descriptor_set_layouts = layouts;
 
    if (config.push_constant_size > 0) {
        vk::PushConstantRange range;
        range.stageFlags = vk::ShaderStageFlagBits::eVertex | vk::ShaderStageFlagBits::eFragment;
        range.offset = 0;
        range.size = static_cast<uint32_t>(config.push_constant_size);
        vk_config.push_constant_ranges.push_back(range);
    }
 
    vk_config.render_pass = rp_it->second.render_pass->get();
    vk_config.subpass = config.subpass;
 
    vk_config.dynamic_states = {
        vk::DynamicState::eViewport,
        vk::DynamicState::eScissor
    };
 
    auto pipeline = std::make_shared<Core::VKGraphicsPipeline>();
    if (!pipeline->create(m_shader_foundry->get_device(), vk_config)) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::Rendering,
            "Failed to create VKGraphicsPipeline");
 
        for (auto layout : layouts) {
            m_shader_foundry->get_device().destroyDescriptorSetLayout(layout);
        }
        return INVALID_RENDER_PIPELINE;
    }
 
    auto pipeline_id = m_next_pipeline_id.fetch_add(1);
    PipelineState state;
    state.shader_ids = { config.vertex_shader, config.fragment_shader };
    state.pipeline = pipeline;
    state.layouts = layouts;
    state.layout = pipeline->get_layout();
    state.render_pass = config.render_pass;
    m_pipelines[pipeline_id] = std::move(state);
 
    MF_INFO(Journal::Component::Portal, Journal::Context::Rendering,
        "Graphics pipeline created (ID: {}, {} descriptor sets)",
        pipeline_id, layouts.size());
 
    return pipeline_id;
}
Referenced by create_simple_pipeline().
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