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431 lines
21 KiB
431 lines
21 KiB
/* |
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013, 2014, 2015 |
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Vladimír Vondruš <mosra@centrum.cz> |
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Permission is hereby granted, free of charge, to any person obtaining a |
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copy of this software and associated documentation files (the "Software"), |
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to deal in the Software without restriction, including without limitation |
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the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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and/or sell copies of the Software, and to permit persons to whom the |
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Software is furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included |
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in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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DEALINGS IN THE SOFTWARE. |
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*/ |
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/** @page opengl-support OpenGL support state |
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@brief List of (un)supported OpenGL features and extensions. |
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@tableofcontents |
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@section opengl-support-state OpenGL implementation state |
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The extension implementation is considered complete if all its defined types, |
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functions and enum values are exposed through the API, except for features |
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listed below in @ref opengl-unsupported-features. |
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@subsection opengl-support-21 OpenGL 2.1 |
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The core subset of OpenGL 2.1 should be fully implemented, except for the |
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following: |
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- Pixel store state (@fn_gl{PixelStore} function) |
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- Compressed texture upload |
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- Proxy textures |
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- Copying framebuffer to texture (@fn_gl{CopyTexImage2D} etc.) |
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- Some forgotten limit queries |
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@subsection opengl-support-30 OpenGL 3.0 |
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@todo @extension{EXT,texture_array} overlaps with @extension{ARB,framebuffer_object} |
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@todo Add @extension{ARB,depth_buffer_float} and implement the missing @fn_gl{DepthRange} function, but keep (and implement) @extension{NV,depth_buffer_float} for non-linear depth buffer |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 1.30 | done |
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@extension{ARB,map_buffer_range} | done |
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@extension{ARB,color_buffer_float} | | |
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@extension{ARB,half_float_pixel} | done |
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@extension{ARB,texture_float} | done |
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@extension{ARB,depth_buffer_float} | done |
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@extension{ARB,texture_rg} | done |
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@extension{ARB,vertex_array_object} | done |
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@extension{ARB,framebuffer_object} | done |
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@extension{ARB,framebuffer_sRGB} | done |
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@extension{ARB,half_float_vertex} | done |
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@extension{EXT,gpu_shader4} | done |
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@extension{EXT,packed_float} | done |
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@extension{EXT,texture_array} | done |
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@extension{EXT,texture_compression_rgtc} | done |
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@extension{EXT,texture_shared_exponent} | done |
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@extension{EXT,draw_buffers2} | | |
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@extension{EXT,texture_integer} | done (GL 3.0 subset) |
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@extension{EXT,transform_feedback} | done |
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@extension{NV,depth_buffer_float} | | |
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@extension{NV,conditional_render} | done |
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@subsection opengl-support-31 OpenGL 3.1 |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 1.40 | done |
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@extension{ARB,texture_rectangle} | done |
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@extension{ARB,draw_instanced} | done |
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@extension{ARB,texture_buffer_object} | done |
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@extension{ARB,uniform_buffer_object} | missing uniform block binding |
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@extension{ARB,copy_buffer} | done |
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@extension{EXT,texture_snorm} | done |
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@extension{NV,primitive_restart} | | |
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@subsection opengl-support-32 OpenGL 3.2 |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 1.50 | done |
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@extension{ARB,geometry_shader4} | missing layered attachments |
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@extension{ARB,depth_clamp} | done |
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@extension{ARB,draw_elements_base_vertex} | done |
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@extension{ARB,fragment_coord_conventions} | done (shading language only) |
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@extension{ARB,provoking_vertex} | done |
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@extension{ARB,seamless_cube_map} | done |
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@extension{ARB,sync} | | |
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@extension{ARB,texture_multisample} | missing sample location queries and sample mask |
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@extension{ARB,vertex_array_bgra} | done |
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@subsection opengl-support-33 OpenGL 3.3 |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 3.30 | done |
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@extension{ARB,instanced_arrays} | done |
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@extension{ARB,blend_func_extended} | done |
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@extension{ARB,explicit_attrib_location} | done (shading language only) |
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@extension{ARB,occlusion_query2} | done |
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@extension{ARB,sampler_objects} | | |
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@extension{ARB,shader_bit_encoding} | done (shading language only) |
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@extension{ARB,texture_rgb10_a2ui} | done |
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@extension{ARB,texture_swizzle} | done |
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@extension{ARB,timer_query} | missing direct query |
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@extension{ARB,vertex_type_2_10_10_10_rev} | done |
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@subsection opengl-support-40 OpenGL 4.0 |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 4.00 | done |
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@extension{ARB,draw_buffers_blend} | | |
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@extension{ARB,sample_shading} | | |
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@extension{ARB,texture_cube_map_array} | done |
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@extension{ARB,texture_gather} | missing limit queries |
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@extension{ARB,texture_query_lod} | done (shading language only) |
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@extension{ARB,draw_indirect} | | |
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@extension{ARB,gpu_shader5} | missing limit queries |
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@extension{ARB,gpu_shader_fp64} | done |
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@extension{ARB,shader_subroutine} | | |
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@extension{ARB,tessellation_shader} | missing some limit queries and patch parameter specification function |
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@extension{ARB,texture_buffer_object_rgb32} | done |
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@extension{ARB,transform_feedback2} | missing transform feedback draw |
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@extension{ARB,transform_feedback3} | only advanced interleaving |
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@subsection opengl-support-41 OpenGL 4.1 |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 4.10 | done |
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@extension{ARB,ES2_compatibility} | only float depth clear |
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@extension{ARB,get_program_binary} | | |
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@extension{ARB,separate_shader_objects} | only direct uniform binding |
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@extension{ARB,shader_precision} | done (shading language only) |
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@extension{ARB,vertex_attrib_64bit} | done |
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@extension{ARB,viewport_array} | | |
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@subsection opengl-support-42 OpenGL 4.2 |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 4.20 | done |
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@extension{ARB,texture_compression_bptc} | done |
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@extension{ARB,base_instance} | done |
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@extension{ARB,shading_language_420pack} | done (shading language only) |
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@extension{ARB,transform_feedback_instanced} | | |
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@extension{ARB,compressed_texture_pixel_storage} | | |
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@extension{ARB,conservative_depth} | done (shading language only) |
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@extension{ARB,internalformat_query} | | |
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@extension{ARB,map_buffer_alignment} | done |
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@extension{ARB,shader_atomic_counters} | done |
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@extension{ARB,shader_image_load_store} | | |
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@extension{ARB,shading_language_packing} | done (shading language only) |
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@extension{ARB,texture_storage} | done |
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@subsection opengl-support-43 OpenGL 4.3 |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 4.30 | done |
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@extension{ARB,arrays_of_arrays} | done (shading language only) |
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@extension{ARB,ES3_compatibility} | only conservative sample query |
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@extension{ARB,clear_buffer_object} | | |
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@extension{ARB,compute_shader} | | |
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@extension{ARB,copy_image} | | |
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@extension{KHR,debug} (also in ES) | missing log retrieval, sync, pipeline and sampler label |
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@extension{ARB,explicit_uniform_location} | done |
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@extension{ARB,fragment_layer_viewport} | done (shading language only) |
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@extension{ARB,framebuffer_no_attachments} | | |
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@extension{ARB,internalformat_query2} | | |
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@extension{ARB,invalidate_subdata} | done |
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@extension{ARB,multi_draw_indirect} | | |
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@extension{ARB,program_interface_query} | | |
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@extension{ARB,robust_buffer_access_behavior} | done (nothing to do) |
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@extension{ARB,shader_image_size} | done (shading language only) |
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@extension{ARB,shader_storage_buffer_object} | only limit queries |
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@extension{ARB,stencil_texturing} | done |
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@extension{ARB,texture_buffer_range} | done |
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@extension{ARB,texture_query_levels} | done (shading language only) |
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@extension{ARB,texture_storage_multisample} | done |
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@extension{ARB,texture_view} | | |
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@extension{ARB,vertex_attrib_binding} | | |
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@subsection opengl-support-44 OpenGL 4.4 |
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@todo Also fallback to @extension{AMD,query_buffer_object} |
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@todo @extension{AMD,pinned_memory} "fallback" for @extension{ARB,buffer_storage} |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 4.40 | done |
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@def_gl{MAX_VERTEX_ATTRIB_STRIDE} | | |
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@extension{ARB,buffer_storage} | | |
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@extension{ARB,clear_texture} | | |
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@extension{ARB,enhanced_layouts} | done (shading language only) |
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@extension{ARB,multi_bind} | only texture and buffer binding |
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@extension{ARB,query_buffer_object} | | |
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@extension{ARB,texture_mirror_clamp_to_edge} | done |
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@extension{ARB,texture_stencil8} | done |
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@extension{ARB,vertex_type_10f_11f_11f_rev} | done |
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@subsection opengl-support-45 OpenGL 4.5 |
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Extension | Status |
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------------------------------------------- | ------ |
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GLSL 4.50 | done |
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@extension{ARB,ES3_1_compatibility} | | |
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@extension{ARB,clip_control} | | |
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@extension{ARB,conditional_render_inverted} | done |
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@extension{ARB,cull_distance} | | |
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@extension{ARB,derivative_control} | done (shading language only) |
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@extension{ARB,direct_state_access} | done for implemented functionality (except VAOs) |
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@extension{ARB,get_texture_sub_image} | | |
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@extension{ARB,shader_texture_image_samples} | done (shading language only) |
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@extension{ARB,texture_barrier} | | |
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@extension{KHR,context_flush_control} (also in ES) | | |
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@extension{KHR,robustness} (also in ES) | | |
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@subsection opengl-support-extensions ARB / Khronos OpenGL extensions |
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Extension | Status |
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------------------------------------------- | ------ |
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@extension{ARB,robustness} | done |
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@extension3{KHR,texture_compression_astc_ldr,texture_compression_astc_hdr} (also in ES) | | |
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@extension{KHR,texture_compression_astc_hdr} (also in ES) | | |
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@extension{ARB,robustness_isolation} | done |
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@extension{ARB,bindless_texture} | | |
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@extension{ARB,compute_variable_group_size} | | |
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@extension{ARB,indirect_parameters} | | |
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@extension{ARB,seamless_cubemap_per_texture} | | |
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@extension{ARB,shader_draw_parameters} | done (shading language only) |
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@extension{ARB,shader_group_vote} | done (shading language only) |
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@extension{ARB,sparse_texture} | | |
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@extension{ARB,pipeline_statistics_query} | | |
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@extension{ARB,sparse_buffer} | | |
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@extension{ARB,transform_feedback_overflow_query} | | |
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@subsection opengl-support-extensions-vendor Vendor OpenGL extensions |
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@todo @extension{ARB,sparse_texture}, @extension{ARB,bindless_texture} + their vendor equivalents |
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@todo @extension{ATI,meminfo}, @extension{NVX,gpu_memory_info}, GPU temperature |
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@todo @extension{AMD,performance_monitor}, @extension{INTEL,performance_query} |
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Extension | Status |
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------------------------------------------- | ------ |
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@extension{AMD,vertex_shader_layer} | done (shading language only) |
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@extension{AMD,shader_trinary_minmax} | done (shading language only) |
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@extension{ATI,texture_mirror_once} | done (GL 4.4 subset) |
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@extension{EXT,texture_filter_anisotropic} (also in ES) | done |
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@extension{EXT,texture_mirror_clamp} | only GL 4.4 subset |
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@extension{EXT,direct_state_access} | done for implemented functionality |
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@extension{EXT,texture_sRGB_decode} (also in ES) | done |
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@extension{EXT,shader_integer_mix} (also in ES) | done (shading language only) |
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@extension2{EXT,debug_label} (also in ES) | missing pipeline and sampler label |
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@extension2{EXT,debug_marker} (also in ES) | done |
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@extension{GREMEDY,string_marker} | done |
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@subsection opengl-support-es20 OpenGL ES 2.0 |
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Features that have their equivalents implemented in desktop version are |
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supported. ESSL 1.00 is supported. |
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@subsection opengl-support-es30 OpenGL ES 3.0 |
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Features that have their equivalents implemented in desktop version are |
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supported. ESSL 3.00 is supported. |
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@subsection opengl-support-es31 OpenGL ES 3.1 |
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Features that have their equivalents implemented in desktop version are |
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supported. ESSL 3.10 is supported. |
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@subsection opengl-support-es30-extensions OpenGL ES 2.0 extensions to match ES 3.0 functionality |
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Extension | Status |
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------------------------------------------- | ------ |
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@es_extension{ANGLE,framebuffer_blit} | done |
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@es_extension{ANGLE,framebuffer_multisample} | done |
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@es_extension{ANGLE,instanced_arrays} | done |
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@es_extension{ANGLE,depth_texture} | done |
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@es_extension{APPLE,framebuffer_multisample} | done (ES 3.0 subset) |
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@es_extension{APPLE,texture_max_level} | done |
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@es_extension{ARM,rgba8} | done |
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@es_extension{EXT,texture_type_2_10_10_10_REV} | done |
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@es_extension{EXT,discard_framebuffer} | done |
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@es_extension2{EXT,blend_minmax,blend_minmax} | done |
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@es_extension{EXT,shader_texture_lod} | done (shading language only) |
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@es_extension{EXT,occlusion_query_boolean} | done |
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@es_extension{EXT,shadow_samplers} | done |
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@es_extension{EXT,texture_rg} | done |
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@es_extension{EXT,texture_storage} | done |
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@es_extension{EXT,map_buffer_range} | done |
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@es_extension{EXT,instanced_arrays} | done |
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@es_extension2{EXT,draw_instanced,draw_instanced} | done |
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@es_extension{NV,draw_buffers} | done |
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@es_extension{NV,fbo_color_attachments} | done |
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@es_extension{NV,read_buffer} | done |
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@es_extension{NV,draw_instanced} | done |
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@es_extension{NV,framebuffer_blit} | done |
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@es_extension{NV,framebuffer_multisample} | done |
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@es_extension{NV,instanced_arrays} | done |
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@es_extension{NV,shadow_samplers_array} | done (shading language only) |
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@es_extension{NV,shadow_samplers_cube} | done (shading language only) |
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@es_extension{OES,depth24} | done |
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@es_extension{OES,element_index_uint} | done |
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@es_extension{OES,rgb8_rgba8} | done (desktop-compatible subset) |
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@es_extension{OES,texture_3D} | done |
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@es_extension2{OES,texture_half_float_linear,OES_texture_float_linear} | done |
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@es_extension{OES,texture_float_linear} | done |
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@es_extension2{OES,texture_half_float,OES_texture_float} | done |
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@es_extension{OES,texture_float} | done |
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@es_extension{OES,texture_npot} | done (nothing to do) |
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@es_extension{OES,vertex_half_float} | done |
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@es_extension{OES,packed_depth_stencil} | done |
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@es_extension{OES,depth_texture} | done |
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@es_extension{OES,standard_derivatives} | done |
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@es_extension{OES,vertex_array_object} | done |
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@es_extension{OES,required_internalformat} | done (desktop-compatible subset) |
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@es_extension{OES,surfaceless_context} | done |
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@subsection opengl-support-es-extensions OpenGL ES extensions to match desktop functionality |
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Only extensions not already listed in above tables are included here. |
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@todo @es_extension{NV,non_square_matrices} |
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@todo Support also IMG_multisampled_render_to_texture? It has different enum |
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values (!) |
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Extension | Status |
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------------------------------------------- | ------ |
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@es_extension{APPLE,texture_format_BGRA8888} | done |
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@es_extension{CHROMIUM,map_sub} | only buffer mapping |
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@es_extension{EXT,texture_format_BGRA8888} | done |
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@es_extension{EXT,read_format_bgra} | done |
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@es_extension2{EXT,multi_draw_arrays,multi_draw_arrays} | done |
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@es_extension{EXT,disjoint_timer_query} | only time elapsed query |
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@es_extension{EXT,separate_shader_objects} | only direct uniform binding |
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@es_extension{EXT,sRGB} | done |
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@es_extension{EXT,multisampled_render_to_texture} | only renderbuffer storage |
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@es_extension{EXT,robustness} | done |
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@es_extension{KHR,robust_buffer_access_behavior} | done (nothing to do) |
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@es_extension2{NV,read_buffer_front,NV_read_buffer} | done |
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@es_extension2{NV,read_depth,NV_read_depth_stencil} | done |
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@es_extension2{NV,read_stencil,NV_read_depth_stencil} | done |
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@es_extension{NV,read_depth_stencil} | done |
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@es_extension{NV,texture_border_clamp} | done |
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@es_extension{OES,depth32} | done |
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@es_extension{OES,mapbuffer} | done |
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@es_extension{OES,stencil1} | done |
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@es_extension{OES,stencil4} | done |
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@section opengl-unsupported Unsupported OpenGL features |
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Some functionality, which is either soon-to-be deprecated or isn't proven to |
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add any performance gains, is not supported in Magnum. See also |
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@ref opengl-deprecated. |
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@subsection opengl-unsupported-features Unsupported features |
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- API that is not part of core profile or is marked as deprecated (but still |
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supported in core profile) in the latest version of OpenGL specification is |
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not supported. The only exception are features that are needed for some |
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OpenGL ES 2.0 implementations (such as luminance texture formats). |
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- State queries (various `glIs*()`, `glGet*()` functions) are not supported. |
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Magnum API is designed to prevent the need for majority of them, many of |
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them are tracked internally to avoid redundant state changes and in many |
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cases it is easier to set the state to some value rather than query it and |
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then decide on the result. For detailed state introspection please use |
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external debugger (such as ApiTrace), which is more convenient to use than |
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manual queries. Queries of implementation-defined values (various limits |
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etc.) and queries of generated values (buffer data, texture data) are |
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supported. |
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- Line and polygon smoothing (`GL_LINE_SMOOTH`, `GL_POLYGON_SMOOTH`) and |
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related functions are not supported, as the driver might do it in software |
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with serious performance drops. Multisampling is far superior solution. |
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- Fixed precision data types (`GL_FIXED` in OpenGL ES) are not supported, as |
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they occupy the same memory as floats and they aren't faster than floats on |
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current hardware anymore. They are also not available in WebGL or desktop |
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GL. |
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- Shader compiler is assumed to be present (`GL_SHADER_COMPILER` returning |
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true), as all desktop GL implementations and also ES3 are required to |
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support it. |
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- Querying shader attribute locations (as opposed to setting them) is not |
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supported, as newer GL versions encourage setting them explicitly in shader |
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code. |
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- Direct vertex data specification (as opposed to using buffers) is not |
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supported, as it encourages bad practices. |
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@subsection opengl-unsupported-extensions Unsupported ARB / Khronos extensions |
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- @extension{ARB,shading_language_include} is overly complicated and |
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supported exclusively by NVidia |
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- @extension{ARB,cl_event} seems to be not supported anywhere |
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- @extension{ARB,shader_stencil_export} is supported exclusively by AMD |
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@subsection opengl-unsupported-extensions-vendor Unsupported vendor extensions |
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- @extension{INTEL,map_texture} negatively affects texture access |
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performance. Combination of buffer mapping and pixel buffers might be of |
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the same or better performance, without affecting texture access speed. |
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- @extension{NV,draw_texture} can be done with framebuffer blitting and |
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doesn't make any full-screen postprocessing easier, as shaders are |
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excluded. |
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*/ |
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/** @page opengl-deprecated Deprecated OpenGL API list |
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See also @ref opengl-unsupported and @ref deprecated. |
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*/ |
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/** @page deprecated Deprecated list |
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See also @ref opengl-deprecated. |
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*/
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