ui-pipeline.h

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2025-2026 Manuel Osorio
#pragma once
#include "flint/graphics/pipelines/pipeline-base.h"
 
#include <SDL3/SDL_gpu.h>
 
namespace Flint {
  struct UIVertexUniforms {
      float screenSize[2]; 
      float offset[2];     
  };
 
  struct UIFragmentUniforms {
      float color[4]; 
  };
 
  class UIPipeline : public Pipeline {
    public:
      UIPipeline() = default;
 
      virtual ~UIPipeline() override = default;
 
      UIPipeline(const UIPipeline &) = delete;
      UIPipeline &operator=(const UIPipeline &) = delete;
 
      bool initialize(SDL_GPUDevice *device, ShaderFormat shaderFormat,
                      SDL_GPUTextureFormat swapchainFormat);
 
      static void setVertexUniforms(SDL_GPUCommandBuffer   *commandBuffer,
                                    const UIVertexUniforms &uniforms);
 
      static void setFragmentUniforms(SDL_GPUCommandBuffer     *commandBuffer,
                                      const UIFragmentUniforms &uniforms);
 
      static UIVertexUniforms buildVertexUniforms(float screenWidth, float screenHeight,
                                                  float offsetX = 0.0f, float offsetY = 0.0f);
 
      static UIFragmentUniforms buildFragmentUniforms(float r, float g, float b, float a);
 
      void cleanup();
 
    private:
      using inherited = Pipeline;
      std::unique_ptr<Shader> m_shader;
  };
}