
Status of OpenGL 3.x features in Mesa


Note: when an item is marked as "DONE" it means all the core Mesa
infrastructure is complete but it may be the case that few (if any) drivers
implement the features.


Feature                                               Status
----------------------------------------------------- ------------------------

GL 3.0:

GLSL 1.30 (GL_EXT_gpu_shader4, etc.)                  started
glBindFragDataLocation, glGetFragDataLocation         not started
Conditional rendering (GL_NV_conditional_render)      DONE (swrast, softpipe, i965)
Map buffer subranges (GL_ARB_map_buffer_range)        DONE
Clamping controls (GL_ARB_color_buffer_float)         DONE
Float textures, renderbuffers (GL_ARB_texture_float)  DONE (gallium r300)
GL_EXT_packed_float                                   DONE (gallium r600)
GL_EXT_texture_shared_exponent                        DONE (gallium, swrast)
Float depth buffers (GL_ARB_depth_buffer_float)       DONE
Framebuffer objects (GL_EXT_framebuffer_object)       DONE
Half-float                                            DONE
Multisample blit                                      DONE
Non-normalized Integer texture/framebuffer formats    ~50% done
1D/2D Texture arrays                                  DONE (gallium, swrast)
Packed depth/stencil formats                          DONE
Per-buffer blend and masks (GL_EXT_draw_buffers2)     DONE
GL_EXT_texture_compression_rgtc                       DONE (swrast, gallium r600)
Red and red/green texture formats                     DONE (swrast, i965, gallium)
Transform feedback (GL_EXT_transform_feedback)        ~50% done
Vertex array objects (GL_APPLE_vertex_array_object)   DONE
sRGB framebuffer format (GL_EXT_framebuffer_sRGB)     core GL done (i965, gallium), GLX todo
glClearBuffer commands                                DONE
glGetStringi command                                  DONE
glTexParameterI, glGetTexParameterI commands          DONE
glVertexAttribI commands                              DONE (but converts int
                                                            values to floats)
Depth format cube textures                            not started
GLX_ARB_create_context (GLX 1.4 is required)          not started


GL 3.1:

GLSL 1.40                                             not started
Instanced drawing (GL_ARB_draw_instanced)             DONE (gallium, swrast)
Buffer copying (GL_ARB_copy_buffer)                   DONE
Primitive restart (GL_NV_primitive_restart)           DONE (gallium)
16 vertex texture image units                         DONE
Texture buffer objs (GL_ARB_texture_buffer_object)    not started
Rectangular textures (GL_ARB_texture_rectangle)       DONE
Uniform buffer objs (GL_ARB_uniform_buffer_object)    not started
Signed normalized textures (GL_EXT_texture_snorm)     DONE (gallium)


GL 3.2:

Core/compatibility profiles                           not started
GLSL 1.50                                             not started
Geometry shaders (GL_ARB_geometry_shader4)            partially done (Zack)
BGRA vertex order (GL_ARB_vertex_array_bgra)          DONE
Base vertex offset(GL_ARB_draw_elements_base_vertex)  DONE
Frag shader coord (GL_ARB_fragment_coord_conventions) DONE (swrast, gallium)
Provoking vertex (GL_ARB_provoking_vertex)            DONE
Seamless cubemaps (GL_ARB_seamless_cube_map)          DONE
Multisample textures (GL_ARB_texture_multisample)     not started
Frag depth clamp (GL_ARB_depth_clamp)                 DONE
Fence objects (GL_ARB_sync)                           DONE
GLX_ARB_create_context_profile                        not started


GL 3.3:

GLSL 3.30                                             not started
GL_ARB_blend_func_extended                            not started
GL_ARB_explicit_attrib_location                       DONE (swrast, i915, i965)
GL_ARB_occlusion_query2                               DONE (swrast, gallium)
GL_ARB_sampler_objects                                DONE (gallium)
GL_ARB_texture_rgb10_a2ui                             not started
GL_ARB_texture_swizzle                                DONE (same as EXT version)
GL_ARB_timer_query                                    ~60% done (the EXT variant)
GL_ARB_instanced_arrays                               DONE (gallium)
GL_ARB_vertex_type_2_10_10_10_rev                     DONE (gallium)


GL 4.0:

GLSL 4.0                                             not started
GL_ARB_texture_query_lod                             not started
GL_ARB_draw_buffers_blend                            DONE (gallium softpipe)
GL_ARB_draw_indirect                                 not started
GL_ARB_gpu_shader_fp64                               not started
GL_ARB_sample_shading                                not started
GL_ARB_shader_subroutine                             not started
GL_ARB_tessellation_shader                           not started
GL_ARB_texture_buffer_object_rgb32                   not started
GL_ARB_texture_cube_map_array                        not started
GL_ARB_texture_gather                                not started
GL_ARB_transform_feedback2                           started
GL_ARB_transform_feedback3                           not started


GL 4.1:

GLSL 4.1                                             not started
GL_ARB_ES2_compatibility                             DONE (i965)
GL_ARB_get_program_binary                            not started
GL_ARB_separate_shader_objects                       some infrastructure done
GL_ARB_shader_precision                              not started
GL_ARB_vertex_attrib_64bit                           not started
GL_ARB_viewport_array                                not started


GL 4.2:
GLSL 4.2                                             not started
GL_ARB_texture_compression_bptc                      not started
GL_ARB_compressed_texture_pixel_storage              not started
GL_ARB_shader_atomic_counters                        not started
GL_ARB_texture_storage                               DONE (gallium, swrast)
GL_ARB_transform_feedback_instanced                  not started
GL_ARB_base_instance                                 not started
GL_ARB_shader_image_load_store                       not started
GL_ARB_conservative_depth                            DONE (compiler)
GL_ARB_shading_language_420pack                      not started
GL_ARB_internalformat_query                          not started
GL_ARB_map_buffer_alignment                          not started


More info about these features and the work involved can be found at
http://dri.freedesktop.org/wiki/MissingFunctionality
