gallium: implement the backend of threaded GL dispatch

Acked-by: Timothy Arceri <[email protected]>
Tested-by: Dieter Nützel <[email protected]>
Tested-by: Mike Lothian <[email protected]>

3 files changed, 36 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/common/xmlpool/t_options.h b/src/mesa/drivers/dri/common/xmlpool/t_options.h
index f200093177d..c7c658d0aac 100644
--- a/src/mesa/drivers/dri/common/xmlpool/t_options.h
+++ b/src/mesa/drivers/dri/common/xmlpool/t_options.h
@@ -313,6 +313,10 @@ DRI_CONF_OPT_BEGIN_V(texture_heaps,enum,def,"0:2") \
 	DRI_CONF_DESC_END \
 DRI_CONF_OPT_END
 
+#define DRI_CONF_MESA_GLTHREAD(def) \
+DRI_CONF_OPT_BEGIN_B(mesa_glthread, def) \
+        DRI_CONF_DESC(en,gettext("Enable offloading GL driver work to a separate thread")) \
+DRI_CONF_OPT_END
 
 
 /**
diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index a528f343700..869e6e9f87b 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -29,6 +29,7 @@
 #include "main/accum.h"
 #include "main/api_exec.h"
 #include "main/context.h"
+#include "main/glthread.h"
 #include "main/samplerobj.h"
 #include "main/shaderobj.h"
 #include "main/version.h"
@@ -612,6 +613,17 @@ st_emit_string_marker(struct gl_context *ctx, const GLchar *string, GLsizei len)
    st->pipe->emit_string_marker(st->pipe, string, len);
 }
 
+static void
+st_set_background_context(struct gl_context *ctx)
+{
+   struct st_context *st = ctx->st;
+   struct st_manager *smapi =
+      (struct st_manager*)st->iface.st_context_private;
+
+   assert(smapi->set_background_context);
+   smapi->set_background_context(&st->iface);
+}
+
 void st_init_driver_functions(struct pipe_screen *screen,
                               struct dd_function_table *functions)
 {
@@ -656,4 +668,5 @@ void st_init_driver_functions(struct pipe_screen *screen,
    functions->Enable = st_Enable;
    functions->UpdateState = st_invalidate_state;
    functions->QueryMemoryInfo = st_query_memory_info;
+   functions->SetBackgroundContext = st_set_background_context;
 }
diff --git a/src/mesa/state_tracker/st_manager.c b/src/mesa/state_tracker/st_manager.c
index e663b017174..dad408a451e 100644
--- a/src/mesa/state_tracker/st_manager.c
+++ b/src/mesa/state_tracker/st_manager.c
@@ -29,6 +29,7 @@
 #include "main/extensions.h"
 #include "main/context.h"
 #include "main/debug_output.h"
+#include "main/glthread.h"
 #include "main/texobj.h"
 #include "main/teximage.h"
 #include "main/texstate.h"
@@ -629,6 +630,22 @@ st_context_destroy(struct st_context_iface *stctxi)
    st_destroy_context(st);
 }
 
+static void
+st_start_thread(struct st_context_iface *stctxi)
+{
+   struct st_context *st = (struct st_context *) stctxi;
+
+   _mesa_glthread_init(st->ctx);
+}
+
+static void
+st_thread_finish(struct st_context_iface *stctxi)
+{
+   struct st_context *st = (struct st_context *) stctxi;
+
+   _mesa_glthread_finish(st->ctx);
+}
+
 static struct st_context_iface *
 st_api_create_context(struct st_api *stapi, struct st_manager *smapi,
                       const struct st_context_attribs *attribs,
@@ -723,6 +740,8 @@ st_api_create_context(struct st_api *stapi, struct st_manager *smapi,
    st->iface.teximage = st_context_teximage;
    st->iface.copy = st_context_copy;
    st->iface.share = st_context_share;
+   st->iface.start_thread = st_start_thread;
+   st->iface.thread_finish = st_thread_finish;
    st->iface.st_context_private = (void *) smapi;
    st->iface.cso_context = st->cso_context;
    st->iface.pipe = st->pipe;