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Vulkan-Samples/framework/rendering/subpasses/forward_subpass.h
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2025-09-04 10:54:47 +08:00

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/* Copyright (c) 2018-2025, Arm Limited and Contributors
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 the "License";
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "buffer_pool.h"
#include "rendering/subpasses/geometry_subpass.h"
// This value is per type of light that we feed into the shader
#define MAX_FORWARD_LIGHT_COUNT 8
namespace vkb
{
namespace sg
{
class Scene;
class Node;
class Mesh;
class SubMesh;
class Camera;
} // namespace sg
struct alignas(16) ForwardLights
{
vkb::rendering::Light directional_lights[MAX_FORWARD_LIGHT_COUNT];
vkb::rendering::Light point_lights[MAX_FORWARD_LIGHT_COUNT];
vkb::rendering::Light spot_lights[MAX_FORWARD_LIGHT_COUNT];
};
/**
* @brief This subpass is responsible for rendering a Scene
*/
class ForwardSubpass : public GeometrySubpass
{
public:
/**
* @brief Constructs a subpass designed for forward rendering
* @param render_context Render context
* @param vertex_shader Vertex shader source
* @param fragment_shader Fragment shader source
* @param scene Scene to render on this subpass
* @param camera Camera used to look at the scene
*/
ForwardSubpass(RenderContext &render_context, ShaderSource &&vertex_shader, ShaderSource &&fragment_shader, sg::Scene &scene, sg::Camera &camera);
virtual ~ForwardSubpass() = default;
virtual void prepare() override;
/**
* @brief Record draw commands
*/
virtual void draw(vkb::core::CommandBufferC &command_buffer) override;
};
} // namespace vkb