Add GPUParticles to the OpenGL3 renderer.

This includes collision (2D SDF, Box, Sphere, Heightmap),
attraction (Box, Sphere), and all sorting modes.

This does not include 3D SDF collisions, trails, or
manual emission.

4 files changed, 2 insertions, 10 deletions

diff --git a/scene/2d/gpu_particles_2d.cpp b/scene/2d/gpu_particles_2d.cpp
index e18f2bd1a1..c8f5d7f5a6 100644
--- a/scene/2d/gpu_particles_2d.cpp
+++ b/scene/2d/gpu_particles_2d.cpp
@@ -299,10 +299,6 @@ bool GPUParticles2D::get_interpolate() const {
 PackedStringArray GPUParticles2D::get_configuration_warnings() const {
 	PackedStringArray warnings = Node2D::get_configuration_warnings();
 
-	if (RenderingServer::get_singleton()->is_low_end()) {
-		warnings.push_back(RTR("GPU-based particles are not supported by the OpenGL video driver.\nUse the CPUParticles2D node instead. You can use the \"Convert to CPUParticles2D\" option for this purpose."));
-	}
-
 	if (process_material.is_null()) {
 		warnings.push_back(RTR("A material to process the particles is not assigned, so no behavior is imprinted."));
 	} else {
diff --git a/scene/2d/gpu_particles_2d.h b/scene/2d/gpu_particles_2d.h
index 7fba174357..94555e0bb0 100644
--- a/scene/2d/gpu_particles_2d.h
+++ b/scene/2d/gpu_particles_2d.h
@@ -64,7 +64,7 @@ private:
 #endif
 	Ref<Material> process_material;
 
-	DrawOrder draw_order;
+	DrawOrder draw_order = DRAW_ORDER_LIFETIME;
 
 	Ref<Texture2D> texture;
 
diff --git a/scene/3d/gpu_particles_3d.cpp b/scene/3d/gpu_particles_3d.cpp
index 9d04202c2d..17dfe2610e 100644
--- a/scene/3d/gpu_particles_3d.cpp
+++ b/scene/3d/gpu_particles_3d.cpp
@@ -272,10 +272,6 @@ bool GPUParticles3D::get_interpolate() const {
 PackedStringArray GPUParticles3D::get_configuration_warnings() const {
 	PackedStringArray warnings = GeometryInstance3D::get_configuration_warnings();
 
-	if (RenderingServer::get_singleton()->is_low_end()) {
-		warnings.push_back(RTR("GPU-based particles are not supported by the OpenGL video driver.\nUse the CPUParticles3D node instead. You can use the \"Convert to CPUParticles3D\" option for this purpose."));
-	}
-
 	bool meshes_found = false;
 	bool anim_material_found = false;
 
diff --git a/scene/3d/gpu_particles_3d.h b/scene/3d/gpu_particles_3d.h
index 835d71862a..d1768436e5 100644
--- a/scene/3d/gpu_particles_3d.h
+++ b/scene/3d/gpu_particles_3d.h
@@ -82,7 +82,7 @@ private:
 
 	Ref<Material> process_material;
 
-	DrawOrder draw_order;
+	DrawOrder draw_order = DRAW_ORDER_INDEX;
 
 	Vector<Ref<Mesh>> draw_passes;
 	Ref<Skin> skin;