[Mesa-dev] [PATCH 5/7] gallium: add PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER{S, _BUFFERS}

Erik Faye-Lund erik.faye-lund at collabora.com
Thu Aug 30 13:40:16 UTC 2018


This moves the evergreen-specific max-sizes out as a driver-cap, so
other drivers with less strict requirements also can use hw-atomics.

Remove ssbo_atomic as it's no longer needed.

We should now be able to use hw-atomics for some stages and not for
other, if needed.

Signed-off-by: Erik Faye-Lund <erik.faye-lund at collabora.com>
---
 src/gallium/drivers/etnaviv/etnaviv_screen.c  |  5 +++++
 .../drivers/freedreno/freedreno_screen.c      |  5 +++++
 .../drivers/nouveau/nv30/nv30_screen.c        |  2 ++
 .../drivers/nouveau/nv50/nv50_screen.c        |  2 ++
 .../drivers/nouveau/nvc0/nvc0_screen.c        |  2 ++
 src/gallium/drivers/r300/r300_screen.c        |  2 ++
 src/gallium/drivers/r600/r600_pipe.c          |  9 +++++++++
 src/gallium/drivers/radeonsi/si_get.c         |  2 ++
 src/gallium/drivers/svga/svga_screen.c        |  2 ++
 src/gallium/drivers/v3d/v3d_screen.c          |  2 ++
 src/gallium/drivers/vc4/vc4_screen.c          |  2 ++
 src/gallium/drivers/virgl/virgl_screen.c      |  2 ++
 src/gallium/include/pipe/p_defines.h          |  2 ++
 src/mesa/state_tracker/st_extensions.c        | 20 +++++++++----------
 14 files changed, 49 insertions(+), 10 deletions(-)

diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index 108b97d35c..95166a2db1 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -372,6 +372,11 @@ etna_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return 0;
    case PIPE_CAP_UMA:
       return 1;
+
+   /* hw atomic counters */
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
+      return 0;
    }
 
    debug_printf("unknown param %d", param);
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index af44ab698e..e6dfc2e48e 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -491,6 +491,11 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 		return 1;
 	case PIPE_CAP_NATIVE_FENCE_FD:
 		return fd_device_version(screen->dev) >= FD_VERSION_FENCE_FD;
+
+	/* hw atomic counters */
+	case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+	case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
+		return 0;
 	}
 	debug_printf("unknown param %d\n", param);
 	return 0;
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
index d52d8f3988..3fdbadb6c6 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -239,6 +239,8 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
       return 0;
 
    case PIPE_CAP_MAX_GS_INVOCATIONS:
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index cd36795e56..a6dda5dfa0 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -293,6 +293,8 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
       return 0;
 
    case PIPE_CAP_MAX_GS_INVOCATIONS:
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index 446e30dcc8..b628b24d76 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -322,6 +322,8 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_CONSTBUF0_FLAGS:
    case PIPE_CAP_PACKED_UNIFORMS:
    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index d27c2b8f1d..f29d5244ff 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -261,6 +261,8 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
         case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
         case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+        case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+        case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
             return 0;
 
         case PIPE_CAP_MAX_GS_INVOCATIONS:
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index cbebf748b7..226e714ffb 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -548,6 +548,15 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 		return rscreen->b.info.pci_dev;
 	case PIPE_CAP_PCI_FUNCTION:
 		return rscreen->b.info.pci_func;
+
+	case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+		if (rscreen->b.family >= CHIP_CEDAR && rscreen->has_atomics)
+			return 8;
+		return 0;
+	case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
+		if (rscreen->b.family >= CHIP_CEDAR && rscreen->has_atomics)
+			return EG_MAX_ATOMIC_BUFFERS;
+		return 0;
 	}
 	return 0;
 }
diff --git a/src/gallium/drivers/radeonsi/si_get.c b/src/gallium/drivers/radeonsi/si_get.c
index d8fc6447b4..39cf2a0524 100644
--- a/src/gallium/drivers/radeonsi/si_get.c
+++ b/src/gallium/drivers/radeonsi/si_get.c
@@ -231,6 +231,8 @@ static int si_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 	case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 	case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+	case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+	case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
 		return 0;
 
 	case PIPE_CAP_FENCE_SIGNAL:
diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index 8cc1980f3a..a7f461f631 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -471,6 +471,8 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_CONSTBUF0_FLAGS:
    case PIPE_CAP_PACKED_UNIFORMS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
       return 0;
    case PIPE_CAP_MAX_GS_INVOCATIONS:
       return 32;
diff --git a/src/gallium/drivers/v3d/v3d_screen.c b/src/gallium/drivers/v3d/v3d_screen.c
index 14a40cb5b7..9bad4f40cf 100644
--- a/src/gallium/drivers/v3d/v3d_screen.c
+++ b/src/gallium/drivers/v3d/v3d_screen.c
@@ -273,6 +273,8 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
         case PIPE_CAP_PACKED_UNIFORMS:
         case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+        case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+        case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
                 return 0;
 
                 /* Geometry shader output, unsupported. */
diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c
index e22ec6754a..a000742207 100644
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -301,6 +301,8 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
         case PIPE_CAP_PACKED_UNIFORMS:
         case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+        case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+        case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
                 return 0;
 
                 /* Stream output. */
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index 4fe57611cf..1a9e4bc383 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -316,6 +316,8 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS:
+   case PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS:
       return 0;
    case PIPE_CAP_MAX_GS_INVOCATIONS:
       return 32;
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index b7c7d8fcbd..bdd3f4680f 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -819,6 +819,8 @@ enum pipe_cap
    PIPE_CAP_MAX_SHADER_BUFFER_SIZE,
    PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE,
    PIPE_CAP_MAX_COMBINED_SHADER_BUFFERS,
+   PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS,
+   PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS,
 };
 
 /**
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index d5aad2d748..1c1182d0b0 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -83,7 +83,6 @@ void st_init_limits(struct pipe_screen *screen,
    unsigned sh;
    bool can_ubo = true;
    int temp;
-   bool ssbo_atomic = true;
 
    c->MaxTextureLevels
       = _min(screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS),
@@ -251,7 +250,6 @@ void st_init_limits(struct pipe_screen *screen,
           * for separate atomic counters get the actual hw limits
           * per stage on atomic counters and buffers
           */
-         ssbo_atomic = false;
          pc->MaxAtomicCounters = temp;
          pc->MaxAtomicBuffers = screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS);
       } else {
@@ -445,21 +443,23 @@ void st_init_limits(struct pipe_screen *screen,
    c->MaxAtomicBufferSize =
       c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters * ATOMIC_COUNTER_SIZE;
 
-   if (!ssbo_atomic) {
-      /* on all HW with separate atomic (evergreen) the following
-         lines are true. not sure it's worth adding CAPs for this at this
-         stage. */
-      c->MaxCombinedAtomicCounters = c->Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters;
-      c->MaxCombinedAtomicBuffers = c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
-   } else {
+   c->MaxCombinedAtomicBuffers =
+      screen->get_param(screen,
+                        PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTER_BUFFERS);
+   if (!c->MaxCombinedAtomicBuffers) {
       c->MaxCombinedAtomicBuffers =
          c->Program[MESA_SHADER_VERTEX].MaxAtomicBuffers +
          c->Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers +
          c->Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers +
          c->Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers +
          c->Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers;
-      assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
    }
+   assert(c->MaxCombinedAtomicBuffers <= MAX_COMBINED_ATOMIC_BUFFERS);
+
+   c->MaxCombinedAtomicCounters =
+      screen->get_param(screen, PIPE_CAP_MAX_COMBINED_HW_ATOMIC_COUNTERS);
+   if (!c->MaxCombinedAtomicCounters)
+      c->MaxCombinedAtomicCounters = MAX_ATOMIC_COUNTERS;
 
    if (c->MaxCombinedAtomicBuffers > 0) {
       extensions->ARB_shader_atomic_counters = GL_TRUE;
-- 
2.17.1



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