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Thread: Radeon 5870

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  1. #1
    Intern Contributor
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    Radeon 5870

    The Directx 11 Radeon 5870 card is out. How long do you think it'll be before we see OpenGL extensions supporting the tessellator, hull shader, and domain shader? We'll probably have to wait for NVidia...

  2. #2
    Junior Member Regular Contributor
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    Re: Radeon 5870

    As I noted in the NVX_DX_interop thread, there are some references to tessellation in the current NVIDIA OpenGL driver. I assume it's some code that's leaked in from the development of their DX11 card.

    Knowing NVIDIA, I think there will be extensions available at, or very close to the release of their card.

    Regards
    elFarto

  3. #3
    Super Moderator Frequent Contributor Groovounet's Avatar
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    Re: Radeon 5870

    Considering that AMD already have GL_AMD_vertex_shader_tessellator extension working, I'm quite expecting it to be updated to provide similar functionalities.

    I quite like this GL_AMD_vertex_shader_tessellator extension and actually better than the hull shader and domain shader.

    I would have prefer the vertex shader being updated with hull shader features and geometry shader updated with domain shader features ...

    Maybe one advantage of Direct3D tessellation is that it MIGHT be possible to disable tessellation without any code change on the vertex or geometry shader.

    Anyway, it's a nice feature I can't wait to play around with!

  4. #4
    Intern Newbie
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    Re: Radeon 5870

    Seems they are hidden on catalyst 9.10
    I have seen..
    on ogl driver binary in catalyst 9.10 rc7 and linux ubuntu 9.10 drivers this new extensions:

    dx 11
    =====

    1.GL_AMD_gpu_shader5
    seems to have shader model 5.0

    2.GL_AMD_patch_tessellator

    seems to have domain and hull shaders

    3.GL_AMDX_texture_compression_dxt6
    4.GL_AMDX_texture_compression_dxt7
    new bc6 bc7 hdr texture compression in dx11

    of course 16kx16k textures should be supported now..

    With these and OpenCL only multithread rendering seems to be lacking on OpenGL.. I'm sure Nvidia has also something to say
    in GTC 2009.

    Other extensions
    5. GL_AMDX_random_access_target

    semems as bindless Nvidia Extensions.. or scattering
    to renderbuffers/textures in fbos..

    OPTION AMD_random_access_target;
    AMD_random_access_target

    6. GL_AMDX_abuffer_oit

    seem A-Buffer Order Independent Tranlucency support builtin
    similar to DirectX11 sample

    glFlushOITBuffersAMDX

    dx 10.1
    =======
    new GL_AMD_texture_cube_map_array
    with these and existing

    GL_AMD_texture_texture4
    GL_ARB_draw_buffers_blend

    Similar is denoted by =.
    dx 10.1 seems to be mostly supported but with AMD existing extensions not ARB ones:

    * GL_ARB_draw_buffers_blend=GL_AMD_draw_buffers_blen d
    * GL_ARB_sample_shading
    * GL_ARB_texture_cube_map_array=GL_AMD_texture_cube_ map_array
    * GL_ARB_texture_gather=GL_AMD_texture_texture4
    * GL_ARB_texture_query_lod

    I think ati lacks 3.2 support mainly by:
    glsl 1.50
    GL_ARB_draw_elements_base_vertex
    GL_ARB_fragment_coord_conventions
    GL_ARB_seamless_cube_map
    GL_ARB_texture_multisample =nv_explicit_multisample
    GL_ARB_sync
    GL_ARB_depth_clamp

    others..
    GL_AMD_video_instruction

  5. #5
    Intern Contributor
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    Re: Radeon 5870

    That's really interesting. It would be nice if they made those public.

  6. #6
    Senior Member OpenGL Guru
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    Re: Radeon 5870

    It would be nice if they made those public.
    Beta drivers. You could at least wait until they release official drivers.

  7. #7
    Super Moderator Frequent Contributor Groovounet's Avatar
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    Re: Radeon 5870

    Great digging oscarbg!

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