7 files changed, 25 insertions, 16 deletions
diff --git a/servers/rendering/dummy/rasterizer_dummy.h b/servers/rendering/dummy/rasterizer_dummy.h
index 6cad45ea6d..5c6fcc8386 100644
--- a/servers/rendering/dummy/rasterizer_dummy.h
+++ b/servers/rendering/dummy/rasterizer_dummy.h
@@ -95,9 +95,9 @@ public:
 
 	static void make_current() {
 		_create_func = _create_current;
+		low_end = true;
 	}
 
-	bool is_low_end() const override { return true; }
 	uint64_t get_frame_number() const override { return frame; }
 	double get_frame_delta_time() const override { return delta; }
 
diff --git a/servers/rendering/renderer_compositor.cpp b/servers/rendering/renderer_compositor.cpp
index fa4d9c8b31..b331ec2c1d 100644
--- a/servers/rendering/renderer_compositor.cpp
+++ b/servers/rendering/renderer_compositor.cpp
@@ -35,6 +35,7 @@
 #include "core/string/print_string.h"
 
 RendererCompositor *(*RendererCompositor::_create_func)() = nullptr;
+bool RendererCompositor::low_end = false;
 
 RendererCompositor *RendererCompositor::create() {
 	return _create_func();
diff --git a/servers/rendering/renderer_compositor.h b/servers/rendering/renderer_compositor.h
index 9466148a31..df3df1077a 100644
--- a/servers/rendering/renderer_compositor.h
+++ b/servers/rendering/renderer_compositor.h
@@ -71,6 +71,7 @@ private:
 protected:
 	static RendererCompositor *(*_create_func)();
 	bool back_end = false;
+	static bool low_end;
 
 public:
 	static RendererCompositor *create();
@@ -97,7 +98,7 @@ public:
 	virtual uint64_t get_frame_number() const = 0;
 	virtual double get_frame_delta_time() const = 0;
 
-	_FORCE_INLINE_ virtual bool is_low_end() const { return back_end; };
+	static bool is_low_end() { return low_end; };
 	virtual bool is_xr_enabled() const;
 
 	RendererCompositor();
diff --git a/servers/rendering/renderer_rd/renderer_compositor_rd.h b/servers/rendering/renderer_rd/renderer_compositor_rd.h
index 26bd28286b..1fd6550fb8 100644
--- a/servers/rendering/renderer_rd/renderer_compositor_rd.h
+++ b/servers/rendering/renderer_rd/renderer_compositor_rd.h
@@ -131,6 +131,7 @@ public:
 
 	static void make_current() {
 		_create_func = _create_current;
+		low_end = false;
 	}
 
 	static RendererCompositorRD *singleton;
diff --git a/servers/rendering/rendering_server_default.cpp b/servers/rendering/rendering_server_default.cpp
index c8345d8eef..c4538e0776 100644
--- a/servers/rendering/rendering_server_default.cpp
+++ b/servers/rendering/rendering_server_default.cpp
@@ -321,11 +321,7 @@ void RenderingServerDefault::set_debug_generate_wireframes(bool p_generate) {
 }
 
 bool RenderingServerDefault::is_low_end() const {
-	// FIXME: Commented out when rebasing vulkan branch on master,
-	// causes a crash, it seems rasterizer is not initialized yet the
-	// first time it's called.
-	//return RSG::rasterizer->is_low_end();
-	return false;
+	return RendererCompositor::is_low_end();
 }
 
 void RenderingServerDefault::_thread_exit() {
diff --git a/servers/rendering/rendering_server_default.h b/servers/rendering/rendering_server_default.h
index daf2f86a4c..9d4059b9df 100644
--- a/servers/rendering/rendering_server_default.h
+++ b/servers/rendering/rendering_server_default.h
@@ -113,7 +113,9 @@ public:
 	_changes_changed();
 
 #else
-	_FORCE_INLINE_ static void redraw_request() { changes++; }
+	_FORCE_INLINE_ static void redraw_request() {
+		changes++;
+	}
 #endif
 
 #define WRITE_ACTION redraw_request();
diff --git a/servers/rendering/shader_compiler.cpp b/servers/rendering/shader_compiler.cpp
index 812d636a0b..5669cb2054 100644
--- a/servers/rendering/shader_compiler.cpp
+++ b/servers/rendering/shader_compiler.cpp
@@ -48,8 +48,8 @@ static String _mktab(int p_level) {
 
 static String _typestr(SL::DataType p_type) {
 	String type = ShaderLanguage::get_datatype_name(p_type);
-	if (ShaderLanguage::is_sampler_type(p_type)) {
-		type = type.replace("sampler", "texture"); //we use textures instead of samplers
+	if (!RS::get_singleton()->is_low_end() && ShaderLanguage::is_sampler_type(p_type)) {
+		type = type.replace("sampler", "texture"); //we use textures instead of samplers in Vulkan GLSL
 	}
 	return type;
 }
@@ -538,7 +538,11 @@ String ShaderCompiler::_dump_node_code(const SL::Node *p_node, int p_level, Gene
 					continue; // Instances are indexed directly, don't need index uniforms.
 				}
 				if (SL::is_sampler_type(uniform.type)) {
-					ucode = "layout(set = " + itos(actions.texture_layout_set) + ", binding = " + itos(actions.base_texture_binding_index + uniform.texture_binding) + ") uniform ";
+					// Texture layouts are different for OpenGL GLSL and Vulkan GLSL
+					if (!RS::get_singleton()->is_low_end()) {
+						ucode = "layout(set = " + itos(actions.texture_layout_set) + ", binding = " + itos(actions.base_texture_binding_index + uniform.texture_binding) + ") ";
+					}
+					ucode += "uniform ";
 				}
 
 				bool is_buffer_global = !SL::is_sampler_type(uniform.type) && uniform.scope == SL::ShaderNode::Uniform::SCOPE_GLOBAL;
@@ -681,9 +685,13 @@ String ShaderCompiler::_dump_node_code(const SL::Node *p_node, int p_level, Gene
 				}
 
 				vcode += ";\n";
-
-				r_gen_code.stage_globals[STAGE_VERTEX] += "layout(location=" + itos(index) + ") " + interp_mode + "out " + vcode;
-				r_gen_code.stage_globals[STAGE_FRAGMENT] += "layout(location=" + itos(index) + ") " + interp_mode + "in " + vcode;
+				// GLSL ES 3.0 does not allow layout qualifiers for varyings
+				if (!RS::get_singleton()->is_low_end()) {
+					r_gen_code.stage_globals[STAGE_VERTEX] += "layout(location=" + itos(index) + ") ";
+					r_gen_code.stage_globals[STAGE_FRAGMENT] += "layout(location=" + itos(index) + ") ";
+				}
+				r_gen_code.stage_globals[STAGE_VERTEX] += interp_mode + "out " + vcode;
+				r_gen_code.stage_globals[STAGE_FRAGMENT] += interp_mode + "in " + vcode;
 
 				index += inc;
 			}
@@ -1125,8 +1133,8 @@ String ShaderCompiler::_dump_node_code(const SL::Node *p_node, int p_level, Gene
 							code += ", ";
 						}
 						String node_code = _dump_node_code(onode->arguments[i], p_level, r_gen_code, p_actions, p_default_actions, p_assigning);
-						if (is_texture_func && i == 1) {
-							//need to map from texture to sampler in order to sample
+						if (!RS::get_singleton()->is_low_end() && is_texture_func && i == 1) {
+							//need to map from texture to sampler in order to sample when using Vulkan GLSL
 							StringName texture_uniform;
 							bool correct_texture_uniform = false;