st/dri: Add __DRI2rendererQueryExtension support

The final step to get GLX_MESA_query_renderer working with gallium
drivers.

v2: Remove __DRI2_RENDERER_PREFERRED_PROFILE handling. It's already
handled in dri/common. Spotted by Marek.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/state_trackers/dri/Makefile.sources

@@ -3,6 +3,8 @@ common_SOURCES := \
 	dri_context.h \
 	dri_drawable.c \
 	dri_drawable.h \
+	dri_query_renderer.c \
+	dri_query_renderer.h \
 	dri_screen.c \
 	dri_screen.h
 

src/gallium/state_trackers/dri/dri2.c

@@ -42,6 +42,7 @@
 #include "dri_screen.h"
 #include "dri_context.h"
 #include "dri_drawable.h"
+#include "dri_query_renderer.h"
 #include "dri2_buffer.h"
 
 static int convert_fourcc(int format, int *dri_components_p)
@@ -1228,6 +1229,7 @@ static const __DRIextension *dri_screen_extensions[] = {
    &driTexBufferExtension.base,
    &dri2FlushExtension.base,
    &dri2ImageExtension.base,
+   &dri2RendererQueryExtension.base,
    &dri2ConfigQueryExtension.base,
    &dri2ThrottleExtension.base,
    NULL

src/gallium/state_trackers/dri/dri_query_renderer.c

@@ -0,0 +1,73 @@
+#include "dri_query_renderer.h"
+
+#include "util/u_inlines.h"
+#include "state_tracker/drm_driver.h"
+
+#include "utils.h"
+#include "dri_screen.h"
+#include "dri_query_renderer.h"
+
+static int
+dri2_query_renderer_integer(__DRIscreen *_screen, int param,
+                            unsigned int *value)
+{
+   struct dri_screen *screen = dri_screen(_screen);
+
+   switch (param) {
+   case __DRI2_RENDERER_VENDOR_ID:
+      value[0] =
+         (unsigned int)screen->base.screen->get_param(screen->base.screen,
+                                                      PIPE_CAP_VENDOR_ID);
+      return 0;
+   case __DRI2_RENDERER_DEVICE_ID:
+      value[0] =
+         (unsigned int)screen->base.screen->get_param(screen->base.screen,
+                                                      PIPE_CAP_DEVICE_ID);
+      return 0;
+   case __DRI2_RENDERER_ACCELERATED:
+      value[0] =
+         (unsigned int)screen->base.screen->get_param(screen->base.screen,
+                                                      PIPE_CAP_ACCELERATED);
+      return 0;
+
+   case __DRI2_RENDERER_VIDEO_MEMORY:
+      value[0] =
+         (unsigned int)screen->base.screen->get_param(screen->base.screen,
+                                                      PIPE_CAP_VIDEO_MEMORY);
+      return 0;
+
+   case __DRI2_RENDERER_UNIFIED_MEMORY_ARCHITECTURE:
+      value[0] =
+         (unsigned int)screen->base.screen->get_param(screen->base.screen,
+                                                      PIPE_CAP_UMA);
+      return 0;
+
+   default:
+      return driQueryRendererIntegerCommon(_screen, param, value);
+   }
+}
+
+static int
+dri2_query_renderer_string(__DRIscreen *_screen, int param,
+                           const char **value)
+{
+   struct dri_screen *screen = dri_screen(_screen);
+
+   switch (param) {
+   case __DRI2_RENDERER_VENDOR_ID:
+      value[0] = screen->base.screen->get_vendor(screen->base.screen);
+      return 0;
+   case __DRI2_RENDERER_DEVICE_ID:
+      value[0] = screen->base.screen->get_name(screen->base.screen);
+      return 0;
+   default:
+      return -1;
+   }
+}
+
+const __DRI2rendererQueryExtension dri2RendererQueryExtension = {
+    .base = { __DRI2_RENDERER_QUERY, 1 },
+
+    .queryInteger         = dri2_query_renderer_integer,
+    .queryString          = dri2_query_renderer_string
+};

src/gallium/state_trackers/dri/dri_query_renderer.h

@@ -0,0 +1,9 @@
+#ifndef DRI_QUERY_RENDERER_H
+#define DRI_QUERY_RENDERER_H
+
+#include "dri_util.h"
+
+extern const
+__DRI2rendererQueryExtension dri2RendererQueryExtension;
+
+#endif

src/gallium/state_trackers/dri/drisw.c

@@ -45,6 +45,7 @@
 #include "dri_screen.h"
 #include "dri_context.h"
 #include "dri_drawable.h"
+#include "dri_query_renderer.h"
 
 DEBUG_GET_ONCE_BOOL_OPTION(swrast_no_present, "SWRAST_NO_PRESENT", FALSE);
 static boolean swrast_no_present = FALSE;
@@ -331,6 +332,7 @@ drisw_update_tex_buffer(struct dri_drawable *drawable,
 
 static const __DRIextension *drisw_screen_extensions[] = {
    &driTexBufferExtension.base,
+   &dri2RendererQueryExtension.base,
    NULL
 };