nine: Add drirc options (v2)

Implements vblank_mode and throttling, which  allows us change default ratio
between framerate and input lag.

Acked-by: Jose Fonseca <jfonseca@vmware.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Axel Davy <axel.davy@ens.fr>

1 files changed, 35 insertions, 0 deletions

diff --git a/src/gallium/targets/d3dadapter9/drm.c b/src/gallium/targets/d3dadapter9/drm.c
index d0b72e0..a58e167 100644
--- a/src/gallium/targets/d3dadapter9/drm.c
+++ b/src/gallium/targets/d3dadapter9/drm.c
@@ -36,6 +36,9 @@
 #include "d3dadapter/d3dadapter9.h"
 #include "d3dadapter/drm.h"
 
+#include "xmlconfig.h"
+#include "xmlpool.h"
+
 #include <libdrm/drm.h>
 #include <sys/ioctl.h>
 #include <fcntl.h>
@@ -49,6 +52,16 @@
          (DWORD)((lo) & 0xFFFF) \
     ))
 
+const char __driConfigOptionsNine[] =
+DRI_CONF_BEGIN
+    DRI_CONF_SECTION_PERFORMANCE
+         DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1)
+    DRI_CONF_SECTION_END
+    DRI_CONF_SECTION_NINE
+        DRI_CONF_NINE_THROTTLE(-2)
+    DRI_CONF_SECTION_END
+DRI_CONF_END;
+
 /* Regarding os versions, we should not define our own as that would simply be
  * weird. Defaulting to Win2k/XP seems sane considering the origin of D3D9. The
  * driver also defaults to being a generic D3D9 driver, which of course only
@@ -229,6 +242,9 @@ drm_create_adapter( int fd,
     int i, different_device;
     const struct drm_conf_ret *throttle_ret = NULL;
     const struct drm_conf_ret *dmabuf_ret = NULL;
+    driOptionCache defaultInitOptions;
+    driOptionCache userInitOptions;
+    int throttling_value_user;
 
 #if !GALLIUM_STATIC_TARGETS
     const char *paths[] = {
@@ -289,6 +305,25 @@ drm_create_adapter( int fd,
     } else
         ctx->base.throttling = FALSE;
 
+    driParseOptionInfo(&defaultInitOptions, __driConfigOptionsNine);
+    driParseConfigFiles(&userInitOptions, &defaultInitOptions, 0, "nine");
+    if (driCheckOption(&userInitOptions, "throttle_value", DRI_INT)) {
+        throttling_value_user = driQueryOptioni(&userInitOptions, "throttle_value");
+        if (throttling_value_user == -1)
+            ctx->base.throttling = FALSE;
+        else if (throttling_value_user >= 0) {
+            ctx->base.throttling = TRUE;
+            ctx->base.throttling_value = throttling_value_user;
+        }
+    }
+
+    if (driCheckOption(&userInitOptions, "vblank_mode", DRI_ENUM))
+        ctx->base.vblank_mode = driQueryOptioni(&userInitOptions, "vblank_mode");
+    else
+        ctx->base.vblank_mode = 1;
+
+    driDestroyOptionCache(&userInitOptions);
+    driDestroyOptionInfo(&defaultInitOptions);
 
 #if GALLIUM_STATIC_TARGETS
     ctx->base.ref = ninesw_create_screen(ctx->base.hal);