Use a full screen triangle for mipmap calculations in mobile renderer

Author: clayjohn

servers/rendering/renderer_rd/effects/copy_effects.cpp

@@ -661,10 +661,9 @@ void CopyEffects::copy_raster(RID p_source_texture, RID p_dest_framebuffer) {
 	RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(p_dest_framebuffer, RD::INITIAL_ACTION_LOAD, RD::FINAL_ACTION_STORE, RD::INITIAL_ACTION_LOAD, RD::FINAL_ACTION_DISCARD);
 	RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, blur_raster.pipelines[BLUR_MODE_COPY].get_render_pipeline(RD::INVALID_ID, RD::get_singleton()->framebuffer_get_format(p_dest_framebuffer)));
 	RD::get_singleton()->draw_list_bind_uniform_set(draw_list, uniform_set_cache->get_cache(shader, 0, u_source_texture), 0);
-	RD::get_singleton()->draw_list_bind_index_array(draw_list, material_storage->get_quad_index_array());
 	RD::get_singleton()->draw_list_set_push_constant(draw_list, &blur_raster.push_constant, sizeof(BlurRasterPushConstant));
 
-	RD::get_singleton()->draw_list_draw(draw_list, true);
+	RD::get_singleton()->draw_list_draw(draw_list, false, 1u, 3u);
 	RD::get_singleton()->draw_list_end();
 }
 
@@ -927,10 +926,9 @@ void CopyEffects::make_mipmap_raster(RID p_source_rd_texture, RID p_dest_texture
 	RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(dest_framebuffer, RD::INITIAL_ACTION_LOAD, RD::FINAL_ACTION_STORE, RD::INITIAL_ACTION_LOAD, RD::FINAL_ACTION_DISCARD);
 	RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, blur_raster.pipelines[mode].get_render_pipeline(RD::INVALID_ID, RD::get_singleton()->framebuffer_get_format(dest_framebuffer)));
 	RD::get_singleton()->draw_list_bind_uniform_set(draw_list, uniform_set_cache->get_cache(shader, 0, u_source_rd_texture), 0);
-	RD::get_singleton()->draw_list_bind_index_array(draw_list, material_storage->get_quad_index_array());
 	RD::get_singleton()->draw_list_set_push_constant(draw_list, &blur_raster.push_constant, sizeof(BlurRasterPushConstant));
 
-	RD::get_singleton()->draw_list_draw(draw_list, true);
+	RD::get_singleton()->draw_list_draw(draw_list, false, 1u, 3u);
 	RD::get_singleton()->draw_list_end();
 }