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Diffstat (limited to 'source/blender/draw/intern/draw_manager.c')
-rw-r--r--source/blender/draw/intern/draw_manager.c78
1 files changed, 76 insertions, 2 deletions
diff --git a/source/blender/draw/intern/draw_manager.c b/source/blender/draw/intern/draw_manager.c
index 47adc0acc60..e65fdce5f2e 100644
--- a/source/blender/draw/intern/draw_manager.c
+++ b/source/blender/draw/intern/draw_manager.c
@@ -1197,6 +1197,18 @@ static void drw_engines_enable_basic(void)
use_drw_engine(&draw_engine_basic_type);
}
+static void drw_engine_enable_image_editor(void)
+{
+ if (DRW_engine_external_acquire_for_image_editor()) {
+ use_drw_engine(&draw_engine_external_type);
+ }
+ else {
+ use_drw_engine(&draw_engine_image_type);
+ }
+
+ use_drw_engine(&draw_engine_overlay_type);
+}
+
static void drw_engines_enable_editors(void)
{
SpaceLink *space_data = DST.draw_ctx.space_data;
@@ -1205,8 +1217,7 @@ static void drw_engines_enable_editors(void)
}
if (space_data->spacetype == SPACE_IMAGE) {
- use_drw_engine(&draw_engine_image_type);
- use_drw_engine(&draw_engine_overlay_type);
+ drw_engine_enable_image_editor();
}
else if (space_data->spacetype == SPACE_NODE) {
/* Only enable when drawing the space image backdrop. */
@@ -3188,3 +3199,66 @@ void DRW_draw_state_init_gtests(eGPUShaderConfig sh_cfg)
#endif
/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Draw manager context release/activation
+ *
+ * These functions are used in cases when an OpenGL context creation is needed during the draw.
+ * This happens, for example, when an external engine needs to create its own OpenGL context from
+ * the engine initialization.
+ *
+ * Example of context creation:
+ *
+ * const bool drw_state = DRW_opengl_context_release();
+ * gl_context = WM_opengl_context_create();
+ * DRW_opengl_context_activate(drw_state);
+ *
+ * Example of context destruction:
+ *
+ * const bool drw_state = DRW_opengl_context_release();
+ * WM_opengl_context_activate(gl_context);
+ * WM_opengl_context_dispose(gl_context);
+ * DRW_opengl_context_activate(drw_state);
+ *
+ *
+ * NOTE: Will only perform context modification when on main thread. This way these functions can
+ * be used in an engine without check on whether it is a draw manager which manages OpenGL context
+ * on the current thread. The downside of this is that if the engine performs OpenGL creation from
+ * a non-main thread, that thread is supposed to not have OpenGL context ever bound by Blender.
+ *
+ * \{ */
+
+bool DRW_opengl_context_release(void)
+{
+ if (!BLI_thread_is_main()) {
+ return false;
+ }
+
+ if (GPU_context_active_get() != DST.gpu_context) {
+ /* Context release is requested from the outside of the draw manager main draw loop, indicate
+ * this to the `DRW_opengl_context_activate()` so that it restores drawable of the window. */
+ return false;
+ }
+
+ GPU_context_active_set(NULL);
+ WM_opengl_context_release(DST.gl_context);
+
+ return true;
+}
+
+void DRW_opengl_context_activate(bool drw_state)
+{
+ if (!BLI_thread_is_main()) {
+ return;
+ }
+
+ if (drw_state) {
+ WM_opengl_context_activate(DST.gl_context);
+ GPU_context_active_set(DST.gpu_context);
+ }
+ else {
+ wm_window_reset_drawable();
+ }
+}
+
+/** \} */