[Mesa-dev] [PATCH 1/2] softpipe: enable PIPE_CAP_QUERY_SO_OVERFLOW

[sroland at vmware.com]

From: Roland Scheidegger <sroland at vmware.com>

The driver was supposed to support this since way before the GL spec for it
existed, albeit it was apparently broken, so fix and enable it.
---
 docs/features.txt                        | 2 +-
 src/gallium/drivers/softpipe/sp_query.c  | 7 ++++++-
 src/gallium/drivers/softpipe/sp_screen.c | 3 ++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/docs/features.txt b/docs/features.txt
index ac7645d..ace4669 100644
--- a/docs/features.txt
+++ b/docs/features.txt
@@ -232,7 +232,7 @@ GL 4.6, GLSL 4.60
   GL_ARB_shader_group_vote                              DONE (i965, nvc0, radeonsi)
   GL_ARB_spirv_extensions                               in progress (Nicolai Hähnle, Ian Romanick)
   GL_ARB_texture_filter_anisotropic                     not started
-  GL_ARB_transform_feedback_overflow_query              DONE (i965/gen6+, radeonsi)
+  GL_ARB_transform_feedback_overflow_query              DONE (i965/gen6+, radeonsi, softpipe)
   GL_KHR_no_error                                       started (Timothy Arceri)
 
 These are the extensions cherry-picked to make GLES 3.1
diff --git a/src/gallium/drivers/softpipe/sp_query.c b/src/gallium/drivers/softpipe/sp_query.c
index bec0116..63f6c4b 100644
--- a/src/gallium/drivers/softpipe/sp_query.c
+++ b/src/gallium/drivers/softpipe/sp_query.c
@@ -63,6 +63,7 @@ softpipe_create_query(struct pipe_context *pipe,
           type == PIPE_QUERY_TIME_ELAPSED ||
           type == PIPE_QUERY_SO_STATISTICS ||
           type == PIPE_QUERY_SO_OVERFLOW_PREDICATE ||
+          type == PIPE_QUERY_SO_OVERFLOW_ANY_PREDICATE ||
           type == PIPE_QUERY_PRIMITIVES_EMITTED ||
           type == PIPE_QUERY_PRIMITIVES_GENERATED || 
           type == PIPE_QUERY_PIPELINE_STATISTICS ||
@@ -102,7 +103,9 @@ softpipe_begin_query(struct pipe_context *pipe, struct pipe_query *q)
       sq->so.primitives_storage_needed = softpipe->so_stats.primitives_storage_needed;
       break;
    case PIPE_QUERY_SO_OVERFLOW_PREDICATE:
-      sq->end = FALSE;
+   case PIPE_QUERY_SO_OVERFLOW_ANY_PREDICATE:
+      sq->so.num_primitives_written = softpipe->so_stats.num_primitives_written;
+      sq->so.primitives_storage_needed = softpipe->so_stats.primitives_storage_needed;
       break;
    case PIPE_QUERY_PRIMITIVES_EMITTED:
       sq->so.num_primitives_written = softpipe->so_stats.num_primitives_written;
@@ -153,6 +156,7 @@ softpipe_end_query(struct pipe_context *pipe, struct pipe_query *q)
       sq->end = os_time_get_nano();
       break;
    case PIPE_QUERY_SO_OVERFLOW_PREDICATE:
+   case PIPE_QUERY_SO_OVERFLOW_ANY_PREDICATE:
       sq->so.num_primitives_written =
          softpipe->so_stats.num_primitives_written - sq->so.num_primitives_written;
       sq->so.primitives_storage_needed =
@@ -230,6 +234,7 @@ softpipe_get_query_result(struct pipe_context *pipe,
       vresult->b = TRUE;
       break;
    case PIPE_QUERY_SO_OVERFLOW_PREDICATE:
+   case PIPE_QUERY_SO_OVERFLOW_ANY_PREDICATE:
       vresult->b = sq->end != 0;
       break;
    case PIPE_QUERY_TIMESTAMP_DISJOINT: {
diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c
index 0feef21..2988095 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -220,6 +220,8 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
       return 31;
    case PIPE_CAP_DRAW_INDIRECT:
       return 1;
+   case PIPE_CAP_QUERY_SO_OVERFLOW:
+      return 1;
 
    case PIPE_CAP_VENDOR_ID:
       return 0xFFFFFFFF;
@@ -307,7 +309,6 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_POST_DEPTH_COVERAGE:
    case PIPE_CAP_BINDLESS_TEXTURE:
    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
-   case PIPE_CAP_QUERY_SO_OVERFLOW:
    case PIPE_CAP_MEMOBJ:
       return 0;
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
-- 
2.7.4