[Mesa-dev] [PATCH v2 1/4] driconf: add allow_higher_compat_version option

Marek Olšák maraeo at gmail.com
Tue Feb 14 15:49:02 UTC 2017


Reviewed-by: Marek Olšák <marek.olsak at amd.com>

Marek

On Tue, Feb 14, 2017 at 4:18 PM, Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
> Mesa currently doesn't allow to create 3.1+ compatibility profiles
> mainly because various features are unimplemented and bugs can
> happen.
>
> However, some buggy apps request a compat profile without using
> any old features unimplemented in mesa, and they fail to start.
>
> This option should help some games to run but it's not enough
> for all (eg. Dying Ligth).
>
> v2: - s/force_compat_profile/allow_higher_compat_version
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
> ---
>  src/gallium/include/state_tracker/st_api.h      | 1 +
>  src/gallium/state_trackers/dri/dri_screen.c     | 3 +++
>  src/mesa/drivers/dri/common/xmlpool/t_options.h | 5 +++++
>  src/mesa/drivers/dri/i965/brw_context.c         | 3 +++
>  src/mesa/main/mtypes.h                          | 7 +++++++
>  src/mesa/main/version.c                         | 6 ++++--
>  src/mesa/state_tracker/st_extensions.c          | 2 ++
>  7 files changed, 25 insertions(+), 2 deletions(-)
>
> diff --git a/src/gallium/include/state_tracker/st_api.h b/src/gallium/include/state_tracker/st_api.h
> index a2e37d2e48..1b9ef290b1 100644
> --- a/src/gallium/include/state_tracker/st_api.h
> +++ b/src/gallium/include/state_tracker/st_api.h
> @@ -245,6 +245,7 @@ struct st_config_options
>     unsigned force_glsl_version;
>     boolean force_s3tc_enable;
>     boolean allow_glsl_extension_directive_midshader;
> +   boolean allow_higher_compat_version;
>     boolean glsl_zero_init;
>  };
>
> diff --git a/src/gallium/state_trackers/dri/dri_screen.c b/src/gallium/state_trackers/dri/dri_screen.c
> index a950f5241d..1e278c3d1c 100644
> --- a/src/gallium/state_trackers/dri/dri_screen.c
> +++ b/src/gallium/state_trackers/dri/dri_screen.c
> @@ -70,6 +70,7 @@ const __DRIconfigOptionsExtension gallium_config_options = {
>           DRI_CONF_DISABLE_SHADER_BIT_ENCODING("false")
>           DRI_CONF_FORCE_GLSL_VERSION(0)
>           DRI_CONF_ALLOW_GLSL_EXTENSION_DIRECTIVE_MIDSHADER("false")
> +         DRI_CONF_ALLOW_HIGHER_COMPAT_VERSION("false")
>        DRI_CONF_SECTION_END
>
>        DRI_CONF_SECTION_MISCELLANEOUS
> @@ -99,6 +100,8 @@ dri_fill_st_options(struct st_config_options *options,
>        driQueryOptionb(optionCache, "force_s3tc_enable");
>     options->allow_glsl_extension_directive_midshader =
>        driQueryOptionb(optionCache, "allow_glsl_extension_directive_midshader");
> +   options->allow_higher_compat_version =
> +      driQueryOptionb(optionCache, "allow_higher_compat_version");
>     options->glsl_zero_init = driQueryOptionb(optionCache, "glsl_zero_init");
>  }
>
> diff --git a/src/mesa/drivers/dri/common/xmlpool/t_options.h b/src/mesa/drivers/dri/common/xmlpool/t_options.h
> index a189bbedec..f200093177 100644
> --- a/src/mesa/drivers/dri/common/xmlpool/t_options.h
> +++ b/src/mesa/drivers/dri/common/xmlpool/t_options.h
> @@ -115,6 +115,11 @@ DRI_CONF_OPT_BEGIN_B(allow_glsl_extension_directive_midshader, def) \
>          DRI_CONF_DESC(en,gettext("Allow GLSL #extension directives in the middle of shaders")) \
>  DRI_CONF_OPT_END
>
> +#define DRI_CONF_ALLOW_HIGHER_COMPAT_VERSION(def) \
> +DRI_CONF_OPT_BEGIN_B(allow_higher_compat_version, def) \
> +        DRI_CONF_DESC(en,gettext("Allow a higher compat profile (version 3.1+) for apps that request it")) \
> +DRI_CONF_OPT_END
> +
>
>
>  /**
> diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
> index 7240b1f445..c56a14e3d6 100644
> --- a/src/mesa/drivers/dri/i965/brw_context.c
> +++ b/src/mesa/drivers/dri/i965/brw_context.c
> @@ -916,6 +916,9 @@ brw_process_driconf_options(struct brw_context *brw)
>     ctx->Const.AllowGLSLExtensionDirectiveMidShader =
>        driQueryOptionb(options, "allow_glsl_extension_directive_midshader");
>
> +   ctx->Const.AllowHigherCompatVersion =
> +      driQueryOptionb(options, "allow_higher_compat_version");
> +
>     ctx->Const.GLSLZeroInit = driQueryOptionb(options, "glsl_zero_init");
>
>     brw->dual_color_blend_by_location =
> diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
> index a845a394c8..08bd929255 100644
> --- a/src/mesa/main/mtypes.h
> +++ b/src/mesa/main/mtypes.h
> @@ -3501,6 +3501,13 @@ struct gl_constants
>     GLboolean AllowGLSLExtensionDirectiveMidShader;
>
>     /**
> +    * Allow creating a higher compat profile (version 3.1+) for apps that
> +    * request it. Be careful when adding that driconf option because some
> +    * features are unimplemented and might not work correctly.
> +    */
> +   GLboolean AllowHigherCompatVersion;
> +
> +   /**
>      * Force uninitialized variables to default to zero.
>      */
>     GLboolean GLSLZeroInit;
> diff --git a/src/mesa/main/version.c b/src/mesa/main/version.c
> index 85ec9de612..3d54d21a04 100644
> --- a/src/mesa/main/version.c
> +++ b/src/mesa/main/version.c
> @@ -566,8 +566,10 @@ _mesa_get_version(const struct gl_extensions *extensions,
>     case API_OPENGL_COMPAT:
>        /* Disable GLSL 1.40 and later for legacy contexts.
>         * This disallows creation of the GL 3.1 compatibility context. */
> -      if (consts->GLSLVersion > 130) {
> -         consts->GLSLVersion = 130;
> +      if (!consts->AllowHigherCompatVersion) {
> +         if (consts->GLSLVersion > 130) {
> +            consts->GLSLVersion = 130;
> +         }
>        }
>        /* fall through */
>     case API_OPENGL_CORE:
> diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
> index 293814e3ae..37fe4469c3 100644
> --- a/src/mesa/state_tracker/st_extensions.c
> +++ b/src/mesa/state_tracker/st_extensions.c
> @@ -879,6 +879,8 @@ void st_init_extensions(struct pipe_screen *screen,
>        consts->ForceGLSLVersion = options->force_glsl_version;
>     }
>
> +   consts->AllowHigherCompatVersion = options->allow_higher_compat_version;
> +
>     if (consts->GLSLVersion >= 400)
>        extensions->ARB_gpu_shader5 = GL_TRUE;
>     if (consts->GLSLVersion >= 410)
> --
> 2.11.1
>
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> mesa-dev at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/mesa-dev


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