[Mesa-dev] [PATCH 0/3] Enable GL 3.2 support for i965, bump Mesa version.

[Mike Lothian]

Well done on getting this enabled

Out of interest how far is SandyBridge from 3.2?

Cheers

Mike
On 11 Oct 2013 05:28, "Paul Berry" <stereotype441 at gmail.com> wrote:

> It's been a long and rocky road, but geometry shader support in Mesa's
> i965/gen7 driver has finally reached a point I'm willing to call
> "feature complete".  Since geometry shaders were the last remaining
> feature needed for GL 3.2, it's time to turn on GL 3.2 support.  Here
> is a short patch series to turn it on.
>
> Patch 1 enables GLSL 1.50 and GL 3.2 for i965/gen7 parts (Ivy Bridge
> and Haswell).  Patch 2 removes the old warning message "Geometry
> shader support is currently experimental".  Patch 3 bumps the Mesa
> major version from 9 to 10 to reflect the fact that we now support a
> new version of OpenGL.
>
> Note: although geometry shaders are feature complete, there are still
> a few bugs that I still need to iron out before the next release.
> Here is a list of all the current GLSL 1.50 and GL 3.2 piglit failures
> on Ivy Bridge and Haswell.  With a few minor exceptions that are
> unfixable due to hardware limitations, or which are too obscure to be
> worth fixing, I believe I can take care of all of these by the Nov 27
> release date.
>
> OpenGL 3.2 piglit failures:
> --------------------------
>
> - layered-rendering/clear-{color,depth}: It appears that our glClear
>   implementation doesn't clear all layers of a layered attachment.
>
> -
> layered-rendering/{framebuffer-layered-attachments,framebuffertexture-defaults}:
>   I have not investigated, but I believe Jordan Justen may be working
>   on this.
>
> - minmax: GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS has the wrong value.
>
> GLSL 1.50 piglit failures:
> -------------------------
>
> - built-in constants/* (9 failures) and compiler/constants.geom: a few
>   new GLSL 1.50 built-in constants aren't being set up properly.
>
> -
> compiler/{vs,gs}-redeclares-pervertex-out-{after,after-other,before}-global-redeclaration.geom:
>   We're not flagging an error if both gl_PerVertex and one of its
>   members are redeclared.
>
> -
> compiler/incorrect-{in,out}-layout-qualifiers-with-variable-declarations.geom:
>   We're not flagging an error if GS layout qualifiers are improperly
>   applied to variables.
>
> - compiler/interface-blocks-name-reused-globally.vert: We're not
>   flagging an error if an interface block name conflicts with a global
>   variable name.
>
> - compiler/interface-blocks-structs-defined-within-block-instanced.vert:
>   We're not flagging an error if a struct is defined inside an
>   interface block.
>
> - compiler/layout-fs-no-output.frag: We're not flagging an error if GS
>   layout qualifiers are used in a non-geometry shader.
>
> - compiler/layout-not-case-sensitive-{in,max-vert,out}.geom and
>   compiler/layout-not-case-sensitive.frag: Layout qualifiers should be
>   case-insensitive--they are not.
>
> - compiler/layout-vs-no-{input,output}.vert: We're not flagging an
>   error if GS layout qualifiers are used in a non-geometry shader.
>
> - execution/geometry/clip-distance-bulk-copy: Test is broken.  I have
>   a patch on the Piglit list to fix this.
>
> - execution/geometry/triangle-strip-orientation (Ivy Bridge only):
>   Vertices in triangle strips are improperly ordered.  I am working on
>   a fix for this.
>
> - glsl-1.50-geometry-primitive-id-restart GL_POINTS other (Ivy Bridge
>   only): A hardware workaround is required.  I am working on a fix for
>   this.
>
> - glsl-1.50-geometry-primitive-types * (10 failures): Failing due to
>   bugs in transform feedback (I accidentally dropped a patch from
>   Bryan Cain's original geometry shader series).  I am working on a
>   fix for this.
>
> - glsl-1.50-geometry-tri-strip-ordering-with-prim-restart * (4
>   failures): Vertices in triangle strips are improperly ordered.  I am
>   working on a fix for this.
>
> -
> linker/interstage-{pervertex,pervertex-in,pervertex-out}-redeclaration-unneeded:
>   We're not accounting for the fact that a compilation unit is not
>   required to redeclare gl_PerVertex if it does not use it.
>
> - query-gs-prim-types: New geometry shader informational queries are
>   not implemented yet.
>
> [PATCH 1/3] i965: Turn on GLSL 1.50 and GL 3.2 support for i965 gen7.
> [PATCH 2/3] mesa: Remove warning that geometry shader support is
> experimental.
> [PATCH 3/3] mesa: Bump version to 10.0.0.
> _______________________________________________
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> mesa-dev at lists.freedesktop.org
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>
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