Makes a clear error message if shader compilation failed

servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp

@@ -131,9 +131,7 @@ void SceneShaderForwardClustered::ShaderData::set_code(const String &p_code) {
 
 	SceneShaderForwardClustered *shader_singleton = (SceneShaderForwardClustered *)SceneShaderForwardClustered::singleton;
 	Error err = shader_singleton->compiler.compile(RS::SHADER_SPATIAL, code, &actions, path, gen_code);
-	if (err != OK) {
-		return;
-	}
+	ERR_FAIL_COND_MSG(err != OK, "Shader compilation failed.");
 
 	if (version.is_null()) {
 		version = shader_singleton->shader.version_create();

servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp

@@ -135,8 +135,7 @@ void SceneShaderForwardMobile::ShaderData::set_code(const String &p_code) {
 	SceneShaderForwardMobile *shader_singleton = (SceneShaderForwardMobile *)SceneShaderForwardMobile::singleton;
 
 	Error err = shader_singleton->compiler.compile(RS::SHADER_SPATIAL, code, &actions, path, gen_code);
-
-	ERR_FAIL_COND(err != OK);
+	ERR_FAIL_COND_MSG(err != OK, "Shader compilation failed.");
 
 	if (version.is_null()) {
 		version = shader_singleton->shader.version_create();

servers/rendering/renderer_rd/renderer_canvas_render_rd.cpp

@@ -1970,8 +1970,7 @@ void RendererCanvasRenderRD::ShaderData::set_code(const String &p_code) {
 	RendererCanvasRenderRD *canvas_singleton = (RendererCanvasRenderRD *)RendererCanvasRender::singleton;
 
 	Error err = canvas_singleton->shader.compiler.compile(RS::SHADER_CANVAS_ITEM, code, &actions, path, gen_code);
-
-	ERR_FAIL_COND(err != OK);
+	ERR_FAIL_COND_MSG(err != OK, "Shader compilation failed.");
 
 	if (version.is_null()) {
 		version = canvas_singleton->shader.canvas_shader.version_create();

servers/rendering/renderer_rd/renderer_scene_sky_rd.cpp

@@ -92,8 +92,7 @@ void RendererSceneSkyRD::SkyShaderData::set_code(const String &p_code) {
 	RendererSceneRenderRD *scene_singleton = (RendererSceneRenderRD *)RendererSceneRenderRD::singleton;
 
 	Error err = scene_singleton->sky.sky_shader.compiler.compile(RS::SHADER_SKY, code, &actions, path, gen_code);
-
-	ERR_FAIL_COND(err != OK);
+	ERR_FAIL_COND_MSG(err != OK, "Shader compilation failed.");
 
 	if (version.is_null()) {
 		version = scene_singleton->sky.sky_shader.shader.version_create();

servers/rendering/renderer_rd/renderer_storage_rd.cpp

@@ -5268,8 +5268,7 @@ void RendererStorageRD::ParticlesShaderData::set_code(const String &p_code) {
 	actions.uniforms = &uniforms;
 
 	Error err = base_singleton->particles_shader.compiler.compile(RS::SHADER_PARTICLES, code, &actions, path, gen_code);
-
-	ERR_FAIL_COND(err != OK);
+	ERR_FAIL_COND_MSG(err != OK, "Shader compilation failed.");
 
 	if (version.is_null()) {
 		version = base_singleton->particles_shader.shader.version_create();

servers/rendering/renderer_rd/shader_rd.h

@@ -142,9 +142,7 @@ public:
 		ERR_FAIL_COND_V(!variants_enabled[p_variant], RID());
 
 		Version *version = version_owner.getornull(p_version);
-		if (!version) {
-			return RID();
-		}
+		ERR_FAIL_COND_V(!version, RID());
 
 		if (version->dirty) {
 			_compile_version(version);