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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 changes (GL_EXT_gpu_shader4, etc) not started
Conditional rendering (GL_NV_conditional_render) DONE (swrast & softpipe)
Map buffer subranges (GL_ARB_map_buffer_range) DONE
Float textures, renderbuffers some infrastructure done
(incl. GL_EXT_packed_float, GL_EXT_shared_exponent)
Framebuffer objects (GL_EXT_framebuffer_object) DONE
Half-float some infrastructure done
Multisample blit DONE
Non-normalized Integer texture/framebuffer formats ~50% done
1D/2D Texture arrays core Mesa, swrast done
Packed depth/stencil formats DONE
Per-buffer blend and masks (GL_EXT_draw_buffers2) DONE
GL_EXT_texture_compression_rgtc not started
Red and red/green texture formats DONE (swrast, i965, gallium)
Transform feedback (GL_EXT_transform_feedback) ~50% done
glBindFragDataLocation, glGetFragDataLocation,
glBindBufferRange, glBindBufferBase commands
Vertex array objects (GL_APPLE_vertex_array_object) DONE
sRGB framebuffer format (GL_EXT_framebuffer_sRGB) not started
glClearBuffer commands DONE
glGetStringi command DONE
glTexParameterI, glGetTexParameterI commands DONE
glVertexAttribI commands DONE (but converts int
values to floats)
GL 3.1:
GLSL 1.30 and 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 not started
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 texture formats ~50% done
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, mostly?
Multisample textures (GL_ARB_texture_multisample) not started
Frag depth clamp (GL_ARB_depth_clamp) DONE
Fence objects (GL_ARB_sync) DONE
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 not started
GL_ARB_texture_rgb10_a2ui not started
GL_ARB_texture_swizzle DONE (same as EXT version)
GL_ARB_timer_query DONE (only Xlib sw driver)
GL_ARB_instanced_arrays DONE (gallium)
GL_ARB_vertex_type_2_10_10_10_rev not started
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 not started
GL_ARB_transform_feedback3 not started
GL 4.1:
GLSL 4.1 not started
GL_ARB_ES2_compatibility not started
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
More info about these features and the work involved can be found at
http://dri.freedesktop.org/wiki/MissingFunctionality
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