Add Chromium-only Blender WebEngine parity work

blender-5.2.0/source/blender/sequencer/intern/render.hh

@@ -0,0 +1,98 @@
+/* SPDX-FileCopyrightText: 2024 Blender Authors
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+#pragma once
+
+/** \file
+ * \ingroup sequencer
+ */
+
+#include "DNA_listBase.h"
+
+#include "BLI_math_vector_types.hh"
+#include "BLI_set.hh"
+
+namespace blender {
+
+struct Depsgraph;
+struct ImBuf;
+struct Mask;
+struct RenderData;
+struct Scene;
+struct SeqTimelineChannel;
+struct Strip;
+
+namespace seq {
+
+/* Recursion protection while rendering a single sequencer frame.
+ * If the same scene or strip is seen, recursion stops. */
+struct SeqRenderState {
+  Set<Scene *> scenes_in_progress;
+  Set<Strip *> strips_in_progress;
+};
+
+/* Strip corner coordinates in screen pixel space. Note that they might not be
+ * axis aligned when rotation is present. */
+struct StripScreenQuad {
+  float2 v0, v1, v2, v3;
+
+  bool is_empty() const
+  {
+    return v0 == v1 && v2 == v3 && v0 == v2;
+  }
+};
+
+/**
+ * Result of rendering a strip: the produced image,
+ * plus some auxiliary data.
+ */
+struct SeqResult {
+  bool is_valid() const
+  {
+    return image != nullptr;
+  }
+
+  ImBuf *image = nullptr;
+  /* How much the resulting image should be translated, in pixels. */
+  float2 translation = float2(0, 0);
+  bool is_opaque_before_transform = false;
+};
+
+SeqResult seq_render_give_ibuf_seqbase(const RenderData *context,
+                                       SeqRenderState *state,
+                                       float timeline_frame,
+                                       int chan_shown,
+                                       ListBaseT<SeqTimelineChannel> *channels,
+                                       ListBaseT<Strip> *seqbasep);
+SeqResult seq_render_strip(const RenderData *context,
+                           SeqRenderState *state,
+                           Strip *strip,
+                           float timeline_frame);
+
+/* Renders Mask into an image suitable for sequencer:
+ * RGB channels contain mask intensity; alpha channel is opaque. */
+ImBuf *seq_render_mask(Depsgraph *depsgraph,
+                       int width,
+                       int height,
+                       const Mask *mask,
+                       float frame_index,
+                       bool make_float);
+
+/* Converts image to sequencer color space, if needed. */
+void ensure_ibuf_is_sequencer_space(const Scene *scene, ImBuf *ibuf, bool make_float);
+
+void seq_imbuf_assign_spaces(const Scene *scene, ImBuf *ibuf);
+
+StripScreenQuad get_strip_screen_quad(const RenderData *context, const Strip *strip);
+
+void convert_multilayer_ibuf(ImBuf *ibuf);
+bool seq_image_strip_is_multiview_render(const Scene *scene,
+                                         const Strip *strip,
+                                         int totfiles,
+                                         const char *filepath,
+                                         char *r_prefix,
+                                         const char *r_ext);
+
+}  // namespace seq
+}  // namespace blender