[Mesa-dev] [PATCH 1/4] st/mesa: unify variants and delete functions for TCS, TES, GS
eocallaghan at alterapraxis.com
eocallaghan at alterapraxis.com
Sat Jan 30 22:34:35 PST 2016
This series is,
Reviewed-by: Edward O'Callaghan <eocallaghan at alterapraxis.com>
On 2016-01-31 02:50, Marek Olšák wrote:
> From: Marek Olšák <marek.olsak at amd.com>
>
> no difference between those
> ---
> src/mesa/state_tracker/st_atom_shader.c | 6 +-
> src/mesa/state_tracker/st_cb_program.c | 18 ++-
> src/mesa/state_tracker/st_context.h | 6 +-
> src/mesa/state_tracker/st_program.c | 204
> ++++++++++++--------------------
> src/mesa/state_tracker/st_program.h | 88 +++-----------
> 5 files changed, 108 insertions(+), 214 deletions(-)
>
> diff --git a/src/mesa/state_tracker/st_atom_shader.c
> b/src/mesa/state_tracker/st_atom_shader.c
> index 0f9ea10..2d8a3c3 100644
> --- a/src/mesa/state_tracker/st_atom_shader.c
> +++ b/src/mesa/state_tracker/st_atom_shader.c
> @@ -163,7 +163,7 @@ static void
> update_gp( struct st_context *st )
> {
> struct st_geometry_program *stgp;
> - struct st_gp_variant_key key;
> + struct st_basic_variant_key key;
>
> if (!st->ctx->GeometryProgram._Current) {
> cso_set_geometry_shader_handle(st->cso_context, NULL);
> @@ -199,7 +199,7 @@ static void
> update_tcp( struct st_context *st )
> {
> struct st_tessctrl_program *sttcp;
> - struct st_tcp_variant_key key;
> + struct st_basic_variant_key key;
>
> if (!st->ctx->TessCtrlProgram._Current) {
> cso_set_tessctrl_shader_handle(st->cso_context, NULL);
> @@ -235,7 +235,7 @@ static void
> update_tep( struct st_context *st )
> {
> struct st_tesseval_program *sttep;
> - struct st_tep_variant_key key;
> + struct st_basic_variant_key key;
>
> if (!st->ctx->TessEvalProgram._Current) {
> cso_set_tesseval_shader_handle(st->cso_context, NULL);
> diff --git a/src/mesa/state_tracker/st_cb_program.c
> b/src/mesa/state_tracker/st_cb_program.c
> index 2c4eccf..6f9c53e 100644
> --- a/src/mesa/state_tracker/st_cb_program.c
> +++ b/src/mesa/state_tracker/st_cb_program.c
> @@ -153,7 +153,8 @@ st_delete_program(struct gl_context *ctx, struct
> gl_program *prog)
> struct st_geometry_program *stgp =
> (struct st_geometry_program *) prog;
>
> - st_release_gp_variants(st, stgp);
> + st_release_basic_variants(st, stgp->Base.Base.Target,
> + &stgp->variants, &stgp->tgsi);
>
> if (stgp->glsl_to_tgsi)
> free_glsl_to_tgsi_visitor(stgp->glsl_to_tgsi);
> @@ -175,7 +176,8 @@ st_delete_program(struct gl_context *ctx, struct
> gl_program *prog)
> struct st_tessctrl_program *sttcp =
> (struct st_tessctrl_program *) prog;
>
> - st_release_tcp_variants(st, sttcp);
> + st_release_basic_variants(st, sttcp->Base.Base.Target,
> + &sttcp->variants, &sttcp->tgsi);
>
> if (sttcp->glsl_to_tgsi)
> free_glsl_to_tgsi_visitor(sttcp->glsl_to_tgsi);
> @@ -186,7 +188,8 @@ st_delete_program(struct gl_context *ctx, struct
> gl_program *prog)
> struct st_tesseval_program *sttep =
> (struct st_tesseval_program *) prog;
>
> - st_release_tep_variants(st, sttep);
> + st_release_basic_variants(st, sttep->Base.Base.Target,
> + &sttep->variants, &sttep->tgsi);
>
> if (sttep->glsl_to_tgsi)
> free_glsl_to_tgsi_visitor(sttep->glsl_to_tgsi);
> @@ -239,7 +242,8 @@ st_program_string_notify( struct gl_context *ctx,
> else if (target == GL_GEOMETRY_PROGRAM_NV) {
> struct st_geometry_program *stgp = (struct st_geometry_program
> *) prog;
>
> - st_release_gp_variants(st, stgp);
> + st_release_basic_variants(st, stgp->Base.Base.Target,
> + &stgp->variants, &stgp->tgsi);
> if (!st_translate_geometry_program(st, stgp))
> return false;
>
> @@ -260,7 +264,8 @@ st_program_string_notify( struct gl_context *ctx,
> struct st_tessctrl_program *sttcp =
> (struct st_tessctrl_program *) prog;
>
> - st_release_tcp_variants(st, sttcp);
> + st_release_basic_variants(st, sttcp->Base.Base.Target,
> + &sttcp->variants, &sttcp->tgsi);
> if (!st_translate_tessctrl_program(st, sttcp))
> return false;
>
> @@ -271,7 +276,8 @@ st_program_string_notify( struct gl_context *ctx,
> struct st_tesseval_program *sttep =
> (struct st_tesseval_program *) prog;
>
> - st_release_tep_variants(st, sttep);
> + st_release_basic_variants(st, sttep->Base.Base.Target,
> + &sttep->variants, &sttep->tgsi);
> if (!st_translate_tesseval_program(st, sttep))
> return false;
>
> diff --git a/src/mesa/state_tracker/st_context.h
> b/src/mesa/state_tracker/st_context.h
> index 9db5f11..2883edf 100644
> --- a/src/mesa/state_tracker/st_context.h
> +++ b/src/mesa/state_tracker/st_context.h
> @@ -166,9 +166,9 @@ struct st_context
>
> struct st_vp_variant *vp_variant;
> struct st_fp_variant *fp_variant;
> - struct st_gp_variant *gp_variant;
> - struct st_tcp_variant *tcp_variant;
> - struct st_tep_variant *tep_variant;
> + struct st_basic_variant *gp_variant;
> + struct st_basic_variant *tcp_variant;
> + struct st_basic_variant *tep_variant;
>
> struct gl_texture_object *default_texture;
>
> diff --git a/src/mesa/state_tracker/st_program.c
> b/src/mesa/state_tracker/st_program.c
> index b395454..133869b 100644
> --- a/src/mesa/state_tracker/st_program.c
> +++ b/src/mesa/state_tracker/st_program.c
> @@ -140,112 +140,54 @@ st_release_fp_variants(struct st_context *st,
> struct st_fragment_program *stfp)
>
>
> /**
> - * Delete a geometry program variant. Note the caller must unlink
> + * Delete a basic program variant. Note the caller must unlink
> * the variant from the linked list.
> */
> static void
> -delete_gp_variant(struct st_context *st, struct st_gp_variant *gpv)
> +delete_basic_variant(struct st_context *st, struct st_basic_variant
> *v,
> + GLenum target)
> {
> - if (gpv->driver_shader)
> - cso_delete_geometry_shader(st->cso_context, gpv->driver_shader);
> -
> - free(gpv);
> -}
> -
> -
> -/**
> - * Free all variants of a geometry program.
> - */
> -void
> -st_release_gp_variants(struct st_context *st, struct
> st_geometry_program *stgp)
> -{
> - struct st_gp_variant *gpv;
> -
> - for (gpv = stgp->variants; gpv; ) {
> - struct st_gp_variant *next = gpv->next;
> - delete_gp_variant(st, gpv);
> - gpv = next;
> - }
> -
> - stgp->variants = NULL;
> -
> - if (stgp->tgsi.tokens) {
> - ureg_free_tokens(stgp->tgsi.tokens);
> - stgp->tgsi.tokens = NULL;
> - }
> -}
> -
> -
> -/**
> - * Delete a tessellation control program variant. Note the caller
> must unlink
> - * the variant from the linked list.
> - */
> -static void
> -delete_tcp_variant(struct st_context *st, struct st_tcp_variant *tcpv)
> -{
> - if (tcpv->driver_shader)
> - cso_delete_tessctrl_shader(st->cso_context,
> tcpv->driver_shader);
> -
> - free(tcpv);
> -}
> -
> -
> -/**
> - * Free all variants of a tessellation control program.
> - */
> -void
> -st_release_tcp_variants(struct st_context *st, struct
> st_tessctrl_program *sttcp)
> -{
> - struct st_tcp_variant *tcpv;
> -
> - for (tcpv = sttcp->variants; tcpv; ) {
> - struct st_tcp_variant *next = tcpv->next;
> - delete_tcp_variant(st, tcpv);
> - tcpv = next;
> - }
> -
> - sttcp->variants = NULL;
> -
> - if (sttcp->tgsi.tokens) {
> - ureg_free_tokens(sttcp->tgsi.tokens);
> - sttcp->tgsi.tokens = NULL;
> + if (v->driver_shader) {
> + switch (target) {
> + case GL_TESS_CONTROL_PROGRAM_NV:
> + cso_delete_tessctrl_shader(st->cso_context,
> v->driver_shader);
> + break;
> + case GL_TESS_EVALUATION_PROGRAM_NV:
> + cso_delete_tesseval_shader(st->cso_context,
> v->driver_shader);
> + break;
> + case GL_GEOMETRY_PROGRAM_NV:
> + cso_delete_geometry_shader(st->cso_context,
> v->driver_shader);
> + break;
> + default:
> + assert(!"this shouldn't occur");
> + }
> }
> -}
> -
> -
> -/**
> - * Delete a tessellation evaluation program variant. Note the caller
> must
> - * unlink the variant from the linked list.
> - */
> -static void
> -delete_tep_variant(struct st_context *st, struct st_tep_variant *tepv)
> -{
> - if (tepv->driver_shader)
> - cso_delete_tesseval_shader(st->cso_context,
> tepv->driver_shader);
>
> - free(tepv);
> + free(v);
> }
>
>
> /**
> - * Free all variants of a tessellation evaluation program.
> + * Free all basic program variants.
> */
> void
> -st_release_tep_variants(struct st_context *st, struct
> st_tesseval_program *sttep)
> +st_release_basic_variants(struct st_context *st, GLenum target,
> + struct st_basic_variant **variants,
> + struct pipe_shader_state *tgsi)
> {
> - struct st_tep_variant *tepv;
> + struct st_basic_variant *v;
>
> - for (tepv = sttep->variants; tepv; ) {
> - struct st_tep_variant *next = tepv->next;
> - delete_tep_variant(st, tepv);
> - tepv = next;
> + for (v = *variants; v; ) {
> + struct st_basic_variant *next = v->next;
> + delete_basic_variant(st, v, target);
> + v = next;
> }
>
> - sttep->variants = NULL;
> + *variants = NULL;
>
> - if (sttep->tgsi.tokens) {
> - ureg_free_tokens(sttep->tgsi.tokens);
> - sttep->tgsi.tokens = NULL;
> + if (tgsi->tokens) {
> + ureg_free_tokens(tgsi->tokens);
> + tgsi->tokens = NULL;
> }
> }
>
> @@ -1324,15 +1266,15 @@ st_translate_geometry_program(struct st_context
> *st,
> }
>
>
> -static struct st_gp_variant *
> +static struct st_basic_variant *
> st_create_gp_variant(struct st_context *st,
> struct st_geometry_program *stgp,
> - const struct st_gp_variant_key *key)
> + const struct st_basic_variant_key *key)
> {
> struct pipe_context *pipe = st->pipe;
> - struct st_gp_variant *gpv;
> + struct st_basic_variant *gpv;
>
> - gpv = CALLOC_STRUCT(st_gp_variant);
> + gpv = CALLOC_STRUCT(st_basic_variant);
> if (!gpv)
> return NULL;
>
> @@ -1346,12 +1288,12 @@ st_create_gp_variant(struct st_context *st,
> /**
> * Get/create geometry program variant.
> */
> -struct st_gp_variant *
> +struct st_basic_variant *
> st_get_gp_variant(struct st_context *st,
> struct st_geometry_program *stgp,
> - const struct st_gp_variant_key *key)
> + const struct st_basic_variant_key *key)
> {
> - struct st_gp_variant *gpv;
> + struct st_basic_variant *gpv;
>
> /* Search for existing variant */
> for (gpv = stgp->variants; gpv; gpv = gpv->next) {
> @@ -1399,15 +1341,15 @@ st_translate_tessctrl_program(struct st_context
> *st,
> }
>
>
> -static struct st_tcp_variant *
> +static struct st_basic_variant *
> st_create_tcp_variant(struct st_context *st,
> struct st_tessctrl_program *sttcp,
> - const struct st_tcp_variant_key *key)
> + const struct st_basic_variant_key *key)
> {
> struct pipe_context *pipe = st->pipe;
> - struct st_tcp_variant *tcpv;
> + struct st_basic_variant *tcpv;
>
> - tcpv = CALLOC_STRUCT(st_tcp_variant);
> + tcpv = CALLOC_STRUCT(st_basic_variant);
> if (!tcpv)
> return NULL;
>
> @@ -1421,12 +1363,12 @@ st_create_tcp_variant(struct st_context *st,
> /**
> * Get/create tessellation control program variant.
> */
> -struct st_tcp_variant *
> +struct st_basic_variant *
> st_get_tcp_variant(struct st_context *st,
> struct st_tessctrl_program *sttcp,
> - const struct st_tcp_variant_key *key)
> + const struct st_basic_variant_key *key)
> {
> - struct st_tcp_variant *tcpv;
> + struct st_basic_variant *tcpv;
>
> /* Search for existing variant */
> for (tcpv = sttcp->variants; tcpv; tcpv = tcpv->next) {
> @@ -1496,15 +1438,15 @@ st_translate_tesseval_program(struct st_context
> *st,
> }
>
>
> -static struct st_tep_variant *
> +static struct st_basic_variant *
> st_create_tep_variant(struct st_context *st,
> struct st_tesseval_program *sttep,
> - const struct st_tep_variant_key *key)
> + const struct st_basic_variant_key *key)
> {
> struct pipe_context *pipe = st->pipe;
> - struct st_tep_variant *tepv;
> + struct st_basic_variant *tepv;
>
> - tepv = CALLOC_STRUCT(st_tep_variant);
> + tepv = CALLOC_STRUCT(st_basic_variant);
> if (!tepv)
> return NULL;
>
> @@ -1518,12 +1460,12 @@ st_create_tep_variant(struct st_context *st,
> /**
> * Get/create tessellation evaluation program variant.
> */
> -struct st_tep_variant *
> +struct st_basic_variant *
> st_get_tep_variant(struct st_context *st,
> struct st_tesseval_program *sttep,
> - const struct st_tep_variant_key *key)
> + const struct st_basic_variant_key *key)
> {
> - struct st_tep_variant *tepv;
> + struct st_basic_variant *tepv;
>
> /* Search for existing variant */
> for (tepv = sttep->variants; tepv; tepv = tepv->next) {
> @@ -1551,15 +1493,15 @@ st_get_tep_variant(struct st_context *st,
> * variants attached to the given program which match the given
> context.
> */
> static void
> -destroy_program_variants(struct st_context *st, struct gl_program
> *program)
> +destroy_program_variants(struct st_context *st, struct gl_program
> *target)
> {
> - if (!program || program == &_mesa_DummyProgram)
> + if (!target || target == &_mesa_DummyProgram)
> return;
>
> - switch (program->Target) {
> + switch (target->Target) {
> case GL_VERTEX_PROGRAM_ARB:
> {
> - struct st_vertex_program *stvp = (struct st_vertex_program *)
> program;
> + struct st_vertex_program *stvp = (struct st_vertex_program *)
> target;
> struct st_vp_variant *vpv, **prevPtr = &stvp->variants;
>
> for (vpv = stvp->variants; vpv; ) {
> @@ -1580,7 +1522,7 @@ destroy_program_variants(struct st_context *st,
> struct gl_program *program)
> case GL_FRAGMENT_PROGRAM_ARB:
> {
> struct st_fragment_program *stfp =
> - (struct st_fragment_program *) program;
> + (struct st_fragment_program *) target;
> struct st_fp_variant *fpv, **prevPtr = &stfp->variants;
>
> for (fpv = stfp->variants; fpv; ) {
> @@ -1601,16 +1543,16 @@ destroy_program_variants(struct st_context
> *st, struct gl_program *program)
> case GL_GEOMETRY_PROGRAM_NV:
> {
> struct st_geometry_program *stgp =
> - (struct st_geometry_program *) program;
> - struct st_gp_variant *gpv, **prevPtr = &stgp->variants;
> + (struct st_geometry_program *) target;
> + struct st_basic_variant *gpv, **prevPtr = &stgp->variants;
>
> for (gpv = stgp->variants; gpv; ) {
> - struct st_gp_variant *next = gpv->next;
> + struct st_basic_variant *next = gpv->next;
> if (gpv->key.st == st) {
> /* unlink from list */
> *prevPtr = next;
> /* destroy this variant */
> - delete_gp_variant(st, gpv);
> + delete_basic_variant(st, gpv, stgp->Base.Base.Target);
> }
> else {
> prevPtr = &gpv->next;
> @@ -1622,16 +1564,16 @@ destroy_program_variants(struct st_context
> *st, struct gl_program *program)
> case GL_TESS_CONTROL_PROGRAM_NV:
> {
> struct st_tessctrl_program *sttcp =
> - (struct st_tessctrl_program *) program;
> - struct st_tcp_variant *tcpv, **prevPtr = &sttcp->variants;
> + (struct st_tessctrl_program *) target;
> + struct st_basic_variant *tcpv, **prevPtr = &sttcp->variants;
>
> for (tcpv = sttcp->variants; tcpv; ) {
> - struct st_tcp_variant *next = tcpv->next;
> + struct st_basic_variant *next = tcpv->next;
> if (tcpv->key.st == st) {
> /* unlink from list */
> *prevPtr = next;
> /* destroy this variant */
> - delete_tcp_variant(st, tcpv);
> + delete_basic_variant(st, tcpv,
> sttcp->Base.Base.Target);
> }
> else {
> prevPtr = &tcpv->next;
> @@ -1643,16 +1585,16 @@ destroy_program_variants(struct st_context
> *st, struct gl_program *program)
> case GL_TESS_EVALUATION_PROGRAM_NV:
> {
> struct st_tesseval_program *sttep =
> - (struct st_tesseval_program *) program;
> - struct st_tep_variant *tepv, **prevPtr = &sttep->variants;
> + (struct st_tesseval_program *) target;
> + struct st_basic_variant *tepv, **prevPtr = &sttep->variants;
>
> for (tepv = sttep->variants; tepv; ) {
> - struct st_tep_variant *next = tepv->next;
> + struct st_basic_variant *next = tepv->next;
> if (tepv->key.st == st) {
> /* unlink from list */
> *prevPtr = next;
> /* destroy this variant */
> - delete_tep_variant(st, tepv);
> + delete_basic_variant(st, tepv,
> sttep->Base.Base.Target);
> }
> else {
> prevPtr = &tepv->next;
> @@ -1663,7 +1605,7 @@ destroy_program_variants(struct st_context *st,
> struct gl_program *program)
> break;
> default:
> _mesa_problem(NULL, "Unexpected program target 0x%x in "
> - "destroy_program_variants_cb()", program->Target);
> + "destroy_program_variants_cb()", target->Target);
> }
> }
>
> @@ -1789,7 +1731,7 @@ st_precompile_shader_variant(struct st_context
> *st,
>
> case GL_TESS_CONTROL_PROGRAM_NV: {
> struct st_tessctrl_program *p = (struct st_tessctrl_program
> *)prog;
> - struct st_tcp_variant_key key;
> + struct st_basic_variant_key key;
>
> memset(&key, 0, sizeof(key));
> key.st = st->has_shareable_shaders ? NULL : st;
> @@ -1799,7 +1741,7 @@ st_precompile_shader_variant(struct st_context
> *st,
>
> case GL_TESS_EVALUATION_PROGRAM_NV: {
> struct st_tesseval_program *p = (struct st_tesseval_program
> *)prog;
> - struct st_tep_variant_key key;
> + struct st_basic_variant_key key;
>
> memset(&key, 0, sizeof(key));
> key.st = st->has_shareable_shaders ? NULL : st;
> @@ -1809,7 +1751,7 @@ st_precompile_shader_variant(struct st_context
> *st,
>
> case GL_GEOMETRY_PROGRAM_NV: {
> struct st_geometry_program *p = (struct st_geometry_program
> *)prog;
> - struct st_gp_variant_key key;
> + struct st_basic_variant_key key;
>
> memset(&key, 0, sizeof(key));
> key.st = st->has_shareable_shaders ? NULL : st;
> diff --git a/src/mesa/state_tracker/st_program.h
> b/src/mesa/state_tracker/st_program.h
> index a745315..80d6f81 100644
> --- a/src/mesa/state_tracker/st_program.h
> +++ b/src/mesa/state_tracker/st_program.h
> @@ -171,25 +171,24 @@ struct st_vertex_program
>
>
>
> -/** Geometry program variant key */
> -struct st_gp_variant_key
> +/** Key shared by all shaders except VP, FP */
> +struct st_basic_variant_key
> {
> struct st_context *st; /**< variants are per-context */
> - /* no other fields yet */
> };
>
>
> /**
> * Geometry program variant.
> */
> -struct st_gp_variant
> +struct st_basic_variant
> {
> /* Parameters which generated this variant. */
> - struct st_gp_variant_key key;
> + struct st_basic_variant_key key;
>
> void *driver_shader;
>
> - struct st_gp_variant *next;
> + struct st_basic_variant *next;
> };
>
>
> @@ -202,30 +201,7 @@ struct st_geometry_program
> struct pipe_shader_state tgsi;
> struct glsl_to_tgsi_visitor* glsl_to_tgsi;
>
> - struct st_gp_variant *variants;
> -};
> -
> -
> -
> -/** Tessellation control program variant key */
> -struct st_tcp_variant_key
> -{
> - struct st_context *st; /**< variants are per-context */
> - /* no other fields yet */
> -};
> -
> -
> -/**
> - * Tessellation control program variant.
> - */
> -struct st_tcp_variant
> -{
> - /* Parameters which generated this variant. */
> - struct st_tcp_variant_key key;
> -
> - void *driver_shader;
> -
> - struct st_tcp_variant *next;
> + struct st_basic_variant *variants;
> };
>
>
> @@ -238,30 +214,7 @@ struct st_tessctrl_program
> struct pipe_shader_state tgsi;
> struct glsl_to_tgsi_visitor* glsl_to_tgsi;
>
> - struct st_tcp_variant *variants;
> -};
> -
> -
> -
> -/** Tessellation evaluation program variant key */
> -struct st_tep_variant_key
> -{
> - struct st_context *st; /**< variants are per-context */
> - /* no other fields yet */
> -};
> -
> -
> -/**
> - * Tessellation evaluation program variant.
> - */
> -struct st_tep_variant
> -{
> - /* Parameters which generated this variant. */
> - struct st_tep_variant_key key;
> -
> - void *driver_shader;
> -
> - struct st_tep_variant *next;
> + struct st_basic_variant *variants;
> };
>
>
> @@ -274,7 +227,7 @@ struct st_tesseval_program
> struct pipe_shader_state tgsi;
> struct glsl_to_tgsi_visitor* glsl_to_tgsi;
>
> - struct st_tep_variant *variants;
> + struct st_basic_variant *variants;
> };
>
>
> @@ -398,20 +351,20 @@ st_get_fp_variant(struct st_context *st,
> const struct st_fp_variant_key *key);
>
>
> -extern struct st_gp_variant *
> +extern struct st_basic_variant *
> st_get_gp_variant(struct st_context *st,
> struct st_geometry_program *stgp,
> - const struct st_gp_variant_key *key);
> + const struct st_basic_variant_key *key);
>
> -extern struct st_tcp_variant *
> +extern struct st_basic_variant *
> st_get_tcp_variant(struct st_context *st,
> struct st_tessctrl_program *sttcp,
> - const struct st_tcp_variant_key *key);
> + const struct st_basic_variant_key *key);
>
> -extern struct st_tep_variant *
> +extern struct st_basic_variant *
> st_get_tep_variant(struct st_context *st,
> struct st_tesseval_program *sttep,
> - const struct st_tep_variant_key *key);
> + const struct st_basic_variant_key *key);
>
> extern void
> st_release_vp_variants( struct st_context *st,
> @@ -422,16 +375,9 @@ st_release_fp_variants( struct st_context *st,
> struct st_fragment_program *stfp );
>
> extern void
> -st_release_gp_variants(struct st_context *st,
> - struct st_geometry_program *stgp);
> -
> -extern void
> -st_release_tcp_variants(struct st_context *st,
> - struct st_tessctrl_program *sttcp);
> -
> -extern void
> -st_release_tep_variants(struct st_context *st,
> - struct st_tesseval_program *sttep);
> +st_release_basic_variants(struct st_context *st, GLenum target,
> + struct st_basic_variant **variants,
> + struct pipe_shader_state *tgsi);
>
> extern void
> st_destroy_program_variants(struct st_context *st);
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