Libgdx non utilizza Opengl ES 2.0

Question

Preferibilmente, mi piacerebbe utilizzare OpenGL ES 2.0 per un nuovo gioco 3D che ho iniziato a fare. Comunque, lo stavo sviluppando su un PC Ubuntu (non al top della linea ma decente) che ho comprato nel 2010.

Gdx.graphics.isGL20Available() restituisce false, e sono abbastanza sicuro che il mio supporto per i driver 3.3.0. Qui è quello che sto ricevendo da glxinfo:

name of display: :0.0 
display: :0 screen: 0 
direct rendering: Yes 
server glx vendor string: NVIDIA Corporation 
server glx version string: 1.4 
server glx extensions: 
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig, 
GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control, 
GLX_EXT_swap_control, GLX_EXT_texture_from_pixmap, GLX_ARB_create_context, 
GLX_ARB_create_context_profile, GLX_EXT_create_context_es2_profile, 
GLX_ARB_create_context_robustness, GLX_ARB_multisample, 
GLX_NV_float_buffer, GLX_ARB_fbconfig_float, GLX_EXT_framebuffer_sRGB 
client glx vendor string: NVIDIA Corporation 
client glx version string: 1.4 
client glx extensions: 
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_visual_info, 
GLX_EXT_visual_rating, GLX_EXT_import_context, GLX_SGI_video_sync, 
GLX_NV_swap_group, GLX_NV_video_out, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
GLX_SGI_swap_control, GLX_EXT_swap_control, GLX_ARB_create_context, 
GLX_ARB_create_context_profile, GLX_NV_float_buffer, 
GLX_ARB_fbconfig_float, GLX_EXT_fbconfig_packed_float, 
GLX_EXT_texture_from_pixmap, GLX_EXT_framebuffer_sRGB, 
GLX_NV_present_video, GLX_NV_copy_image, GLX_NV_multisample_coverage, 
GLX_NV_video_capture, GLX_EXT_create_context_es2_profile, 
GLX_ARB_create_context_robustness 
GLX version: 1.4 
GLX extensions: 
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig, 
GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control, 
GLX_EXT_swap_control, GLX_EXT_texture_from_pixmap, GLX_ARB_create_context, 
GLX_ARB_create_context_profile, GLX_EXT_create_context_es2_profile, 
GLX_ARB_create_context_robustness, GLX_ARB_multisample, 
GLX_NV_float_buffer, GLX_ARB_fbconfig_float, GLX_EXT_framebuffer_sRGB, 
GLX_ARB_get_proc_address 
OpenGL vendor string: NVIDIA Corporation 
OpenGL renderer string: GeForce GT 220/PCI/SSE2 
OpenGL version string: 3.3.0 NVIDIA 260.19.06 
OpenGL shading language version string: 3.30 NVIDIA via Cg compiler 
OpenGL extensions: 
GL_ARB_blend_func_extended, GL_ARB_color_buffer_float, 
GL_ARB_compatibility, GL_ARB_copy_buffer, GL_ARB_depth_buffer_float, 
GL_ARB_depth_clamp, GL_ARB_depth_texture, GL_ARB_draw_buffers, 
GL_ARB_draw_buffers_blend, GL_ARB_draw_elements_base_vertex, 
GL_ARB_draw_instanced, GL_ARB_ES2_compatibility, 
GL_ARB_explicit_attrib_location, GL_ARB_fragment_coord_conventions, 
GL_ARB_fragment_program, GL_ARB_fragment_program_shadow, 
GL_ARB_fragment_shader, GL_ARB_framebuffer_object, 
GL_ARB_framebuffer_sRGB, GL_ARB_geometry_shader4, 
GL_ARB_get_program_binary, GL_ARB_half_float_pixel, 
GL_ARB_half_float_vertex, GL_ARB_imaging, GL_ARB_instanced_arrays, 
GL_ARB_map_buffer_range, GL_ARB_multisample, GL_ARB_multitexture, 
GL_ARB_occlusion_query, GL_ARB_occlusion_query2, 
GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite, 
GL_ARB_provoking_vertex, GL_ARB_robustness, GL_ARB_sample_shading, 
GL_ARB_sampler_objects, GL_ARB_seamless_cube_map, 
GL_ARB_separate_shader_objects, GL_ARB_shader_bit_encoding, 
GL_ARB_shader_objects, GL_ARB_shading_language_100, GL_ARB_shadow, 
GL_ARB_sync, GL_ARB_texture_border_clamp, GL_ARB_texture_buffer_object, 
GL_ARB_texture_compression, GL_ARB_texture_compression_rgtc, 
GL_ARB_texture_cube_map, GL_ARB_texture_cube_map_array, 
GL_ARB_texture_env_add, GL_ARB_texture_env_combine, 
GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3, 
GL_ARB_texture_float, GL_ARB_texture_gather, 
GL_ARB_texture_mirrored_repeat, GL_ARB_texture_multisample, 
GL_ARB_texture_non_power_of_two, GL_ARB_texture_query_lod, 
GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui, 
GL_ARB_texture_swizzle, GL_ARB_timer_query, GL_ARB_transform_feedback2, 
GL_ARB_transpose_matrix, GL_ARB_uniform_buffer_object, 
GL_ARB_vertex_array_bgra, GL_ARB_vertex_array_object, 
GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader, 
GL_ARB_vertex_type_2_10_10_10_rev, GL_ARB_viewport_array, 
GL_ARB_window_pos, GL_ATI_draw_buffers, GL_ATI_texture_float, 
GL_ATI_texture_mirror_once, GL_S3_s3tc, GL_EXT_texture_env_add, 
GL_EXT_abgr, GL_EXT_bgra, GL_EXT_bindable_uniform, GL_EXT_blend_color, 
GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate, 
GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array, 
GL_EXT_Cg_shader, GL_EXT_depth_bounds_test, GL_EXT_direct_state_access, 
GL_EXT_draw_buffers2, GL_EXT_draw_instanced, GL_EXT_draw_range_elements, 
GL_EXT_fog_coord, GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample, 
GL_EXTX_framebuffer_mixed_formats, GL_EXT_framebuffer_object, 
GL_EXT_framebuffer_sRGB, GL_EXT_geometry_shader4, 
GL_EXT_gpu_program_parameters, GL_EXT_gpu_shader4, 
GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil, 
GL_EXT_packed_float, GL_EXT_packed_pixels, GL_EXT_pixel_buffer_object, 
GL_EXT_point_parameters, GL_EXT_provoking_vertex, GL_EXT_rescale_normal, 
GL_EXT_secondary_color, GL_EXT_separate_shader_objects, 
GL_EXT_separate_specular_color, GL_EXT_shadow_funcs, 
GL_EXT_stencil_two_side, GL_EXT_stencil_wrap, GL_EXT_texture3D, 
GL_EXT_texture_array, GL_EXT_texture_buffer_object, 
GL_EXT_texture_compression_latc, GL_EXT_texture_compression_rgtc, 
GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map, 
GL_EXT_texture_edge_clamp, GL_EXT_texture_env_combine, 
GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic, 
GL_EXT_texture_integer, GL_EXT_texture_lod, GL_EXT_texture_lod_bias, 
GL_EXT_texture_mirror_clamp, GL_EXT_texture_object, 
GL_EXT_texture_shared_exponent, GL_EXT_texture_sRGB, 
GL_EXT_texture_swizzle, GL_EXT_timer_query, GL_EXT_transform_feedback2, 
GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, GL_IBM_rasterpos_clip, 
GL_IBM_texture_mirrored_repeat, GL_KTX_buffer_region, GL_NV_blend_square, 
GL_NV_conditional_render, GL_NV_copy_depth_to_color, GL_NV_copy_image, 
GL_NV_depth_buffer_float, GL_NV_depth_clamp, GL_NV_explicit_multisample, 
GL_NV_fence, GL_NV_float_buffer, GL_NV_fog_distance, 
GL_NV_fragment_program, GL_NV_fragment_program_option, 
GL_NV_fragment_program2, GL_NV_framebuffer_multisample_coverage, 
GL_NV_geometry_shader4, GL_NV_gpu_program4, GL_NV_gpu_program4_1, 
GL_NV_half_float, GL_NV_light_max_exponent, GL_NV_multisample_coverage, 
GL_NV_multisample_filter_hint, GL_NV_occlusion_query, 
GL_NV_packed_depth_stencil, GL_NV_parameter_buffer_object, 
GL_NV_parameter_buffer_object2, GL_NV_pixel_data_range, 
GL_NV_point_sprite, GL_NV_primitive_restart, GL_NV_register_combiners, 
GL_NV_register_combiners2, GL_NV_shader_buffer_load, 
GL_NV_texgen_reflection, GL_NV_texture_barrier, 
GL_NV_texture_compression_vtc, GL_NV_texture_env_combine4, 
GL_NV_texture_expand_normal, GL_NV_texture_multisample, 
GL_NV_texture_rectangle, GL_NV_texture_shader, GL_NV_texture_shader2, 
GL_NV_texture_shader3, GL_NV_transform_feedback, 
GL_NV_transform_feedback2, GL_NV_vdpau_interop, GL_NV_vertex_array_range, 
GL_NV_vertex_array_range2, GL_NV_vertex_buffer_unified_memory, 
GL_NV_vertex_program, GL_NV_vertex_program1_1, GL_NV_vertex_program2, 
GL_NV_vertex_program2_option, GL_NV_vertex_program3, 
GL_NVX_conditional_render, GL_NVX_gpu_memory_info, 
GL_SGIS_generate_mipmap, GL_SGIS_texture_lod, GL_SGIX_depth_texture, 
GL_SGIX_shadow, GL_SUN_slice_accum 

E molto di più che non ha a che fare con la stringa di versione e/o estensioni. Ho tutte le estensioni necessarie per Opengl ES 2.0 e il mio driver è aggiornato alla 3.3.0 (OpenGL 3.0-> 2.0 ES circa). È perché il mio software rasterizer è vecchio? Se è così, probabilmente ci sono altri nella stessa situazione (non penso nemmeno che ci siano così tante installazioni di Windows che sono state aggiornate oltre la 1.1), e mi piacerebbe anche supportarle. Qual è la migliore soluzione possibile?

Answer 1

Gdx.graphics.isGL20Available() non indica che l'hardware supporta GL ES 2.0. Ti dice che il contesto grafico gl20 è stato inizializzato.

È necessario richiedere a libGDX di utilizzare GL20 esplicitamente. Esempio per Lwjgl Backend:

LwjglApplicationConfiguration config = new LwjglApplicationConfiguration(); 
config.title = "Game"; 
config.width = 800; 
config.height = 480; 
config.useGL20 = true; //this is important 
new LwjglApplication(new YourGame(), config);