gsdx-gui-linux: add some tooltips for the hw options

plugins/GSdx/GSLinuxDialog.cpp

@@ -292,6 +292,11 @@ void populate_hw_table(GtkWidget* hw_table)
 	GtkWidget* acc_blend_check  = CreateCheckBox("Accurate Blend", "accurate_blend", false);
 	GtkWidget* acc_date_check   = CreateCheckBox("Accurate Date", "accurate_date", false);
 
+	// Some helper string
+	gtk_widget_set_tooltip_text(paltex_check, dialog_message(IDC_PALTEX));
+	gtk_widget_set_tooltip_text(acc_blend_check, dialog_message(IDC_ACCURATE_BLEND));
+	gtk_widget_set_tooltip_text(acc_date_check, dialog_message(IDC_ACCURATE_DATE));
+
 	s_table_line = 0;
 	InsertWidgetInTable(hw_table, filter_label, filter_combo_box);
 	InsertWidgetInTable(hw_table, af_label, af_combo_box);

plugins/GSdx/GSSetting.cpp

@@ -92,6 +92,19 @@ const char* dialog_message(int ID, bool* updateText) {
 				"  0500 0500, fixes Persona 3 minimap, helps Haunting Ground.\n"
 				"  0000 1000, fixes Xenosaga hair edges (DX10+ Issue)\n";
 
+#ifdef __linux__
+		case IDC_PALTEX:
+			return "When checked 4/8 bits texture will be send to the GPU with a palette. GPU will be in charge of the conversion. "
+				"(Note it was never tested on openGL)\n\n"
+				"When uncheked the CPU will convert directly the texture to 32 bits\n\n"
+				"It is a basically a trade-off between GPU/CPU";
+		case IDC_ACCURATE_DATE:
+			return "Implement a more accurate algorithm to compute GS destination alpha testing.\n\n"
+				"It could be slower when the effects are used.\n\nNote: it requires the 4.2 openGL extension GL_ARB_shader_image_load_store";
+		case IDC_ACCURATE_BLEND:
+			return "Allow to solve the impossible blending error message.\n\n"
+				"It could be slower when the effect are used.\n\nNote: it requires the 4.5 openGL extension GL_ARB_texture_barrier";
+#endif
 		default:
 			if (updateText)
 				*updateText = false;

plugins/GSdx/GSSetting.h

@@ -62,6 +62,9 @@ enum {
 	IDC_STATIC_TCOFFSETX,
 	IDC_TCOFFSETY,
 	IDC_TCOFFSETY2,
-	IDC_STATIC_TCOFFSETY
+	IDC_STATIC_TCOFFSETY,
+	IDC_PALTEX,
+	IDC_ACCURATE_BLEND,
+	IDC_ACCURATE_DATE
 };
 #endif