image_shader_params.hh

Go to the documentation of this file.

/* SPDX-FileCopyrightText: 2021 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "DNA_camera_types.h"
#include "DNA_image_types.h"
#include "DNA_scene_types.h"
 
#include "IMB_imbuf_types.hh"
 
#include "BKE_image.hh"
 
#include "image_enums.hh"
#include "image_space.hh"
 
namespace blender::draw::image_engine {
 
struct ShaderParameters {
  ImageDrawFlags flags = ImageDrawFlags::Default;
  float shuffle[4];
  float far_near[2];
  bool use_premul_alpha = false;
 
  void update(AbstractSpaceAccessor *space, const Scene *scene, Image *image, ImBuf *image_buffer)
  {
    flags = ImageDrawFlags::Default;
    copy_v4_fl(shuffle, 1.0f);
    copy_v2_fl2(far_near, 100.0f, 0.0f);
 
    use_premul_alpha = BKE_image_has_gpu_texture_premultiplied_alpha(image, image_buffer);
 
    if (scene->camera && scene->camera->type == OB_CAMERA) {
      const Camera *camera = static_cast<const Camera *>(scene->camera->data);
      copy_v2_fl2(far_near, camera->clip_end, camera->clip_start);
    }
    space->get_shader_parameters(*this, image_buffer);
  }
};
 
}  // namespace blender::draw::image_engine