1 files changed, 59 insertions, 0 deletions
diff --git a/source/blender/draw/engines/image/image_shader_params.hh b/source/blender/draw/engines/image/image_shader_params.hh
new file mode 100644
index 00000000000..fd16d9cdc4b
--- /dev/null
+++ b/source/blender/draw/engines/image/image_shader_params.hh
@@ -0,0 +1,59 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright 2021, Blender Foundation.
+ */
+
+/** \file
+ * \ingroup draw_engine
+ */
+
+#pragma once
+
+#include "DNA_camera_types.h"
+#include "DNA_image_types.h"
+#include "DNA_scene_types.h"
+
+#include "IMB_imbuf_types.h"
+
+#include "BKE_image.h"
+
+#include "BLI_math.h"
+
+#include "image_space.hh"
+
+struct ShaderParameters {
+  constexpr static float color[4] = {1.0f, 1.0f, 1.0f, 1.0f};
+
+  int flags = 0;
+  float shuffle[4];
+  float far_near[2];
+  bool use_premul_alpha = false;
+
+  void update(AbstractSpaceAccessor *space, const Scene *scene, Image *image, ImBuf *image_buffer)
+  {
+    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) {
+      Camera *camera = static_cast<Camera *>(scene->camera->data);
+      copy_v2_fl2(far_near, camera->clip_end, camera->clip_start);
+    }
+    const bool is_tiled_image = (image->source == IMA_SRC_TILED);
+    space->get_shader_parameters(*this, image_buffer, is_tiled_image);
+  }
+};