gallium: add PIPE_CAP_MAX_GS_INVOCATIONS

Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>

src/gallium/docs/source/screen.rst

@@ -452,7 +452,8 @@ subpixel precision bias in bits during conservative rasterization.
 * ``PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS``: True is the driver supports
   programmable sample location through ```get_sample_pixel_grid``` and
   ```set_sample_locations```.
-
+* ``PIPE_CAP_MAX_GS_INVOCATIONS``: Maximum supported value of
+  TGSI_PROPERTY_GS_INVOCATIONS.
 
 .. _pipe_capf:
 

src/gallium/drivers/etnaviv/etnaviv_screen.c

@@ -285,6 +285,9 @@ etna_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
 
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
+
    /* Stream output. */
    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:

src/gallium/drivers/freedreno/freedreno_screen.c

@@ -372,6 +372,9 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 		return 0;
 
+	case PIPE_CAP_MAX_GS_INVOCATIONS:
+		return 32;
+
 	case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 		return screen->priority_mask;
 

src/gallium/drivers/i915/i915_screen.c

@@ -337,6 +337,9 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
 
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
+
    case PIPE_CAP_MAX_VIEWPORTS:
       return 1;
 

src/gallium/drivers/llvmpipe/lp_screen.c

@@ -373,6 +373,8 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
    }
    /* should only get here on unhandled cases */
    debug_printf("Unexpected PIPE_CAP %d query\n", param);

src/gallium/drivers/nouveau/nv30/nv30_screen.c

@@ -240,6 +240,8 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
 
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
    case PIPE_CAP_VENDOR_ID:
       return 0x10de;
    case PIPE_CAP_DEVICE_ID: {

src/gallium/drivers/nouveau/nv50/nv50_screen.c

@@ -294,6 +294,8 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
 
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
    case PIPE_CAP_VENDOR_ID:
       return 0x10de;
    case PIPE_CAP_DEVICE_ID: {

src/gallium/drivers/nouveau/nvc0/nvc0_screen.c

@@ -267,6 +267,8 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return class_3d >= GM200_3D_CLASS;
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
       return class_3d >= GP100_3D_CLASS;
    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:

src/gallium/drivers/r300/r300_screen.c

@@ -262,6 +262,9 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
             return 0;
 
+        case PIPE_CAP_MAX_GS_INVOCATIONS:
+            return 32;
+
         /* SWTCL-only features. */
         case PIPE_CAP_PRIMITIVE_RESTART:
         case PIPE_CAP_USER_VERTEX_BUFFERS:

src/gallium/drivers/r600/r600_pipe.c

@@ -376,6 +376,9 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 		return 8;
 
+	case PIPE_CAP_MAX_GS_INVOCATIONS:
+		return 32;
+
 	/* Unsupported features. */
 	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:

src/gallium/drivers/radeonsi/si_get.c

@@ -261,6 +261,8 @@ static int si_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 		return 1024;
 	case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 		return 4095;
+	case PIPE_CAP_MAX_GS_INVOCATIONS:
+		return 32;
 
 	case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 		return 2048;

src/gallium/drivers/softpipe/sp_screen.c

@@ -325,6 +325,8 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
       return 4;
    }

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_PACKED_UNIFORMS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
    }
 
    debug_printf("Unexpected PIPE_CAP_ query %u\n", param);

src/gallium/drivers/swr/swr_screen.cpp

@@ -362,6 +362,8 @@ swr_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
 
    case PIPE_CAP_VENDOR_ID:
       return 0xFFFFFFFF;

src/gallium/drivers/v3d/v3d_screen.c

@@ -277,6 +277,7 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
                 /* Geometry shader output, unsupported. */
         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+	case PIPE_CAP_MAX_GS_INVOCATIONS:
                 return 0;
 
                 /* Texturing. */

src/gallium/drivers/vc4/vc4_screen.c

@@ -313,6 +313,7 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
                 /* Geometry shader output, unsupported. */
         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+	case PIPE_CAP_MAX_GS_INVOCATIONS:
                 return 0;
 
                 /* Texturing. */

src/gallium/drivers/virgl/virgl_screen.c

@@ -308,6 +308,8 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
       return 0;
+   case PIPE_CAP_MAX_GS_INVOCATIONS:
+      return 32;
    case PIPE_CAP_VENDOR_ID:
       return 0x1af4;
    case PIPE_CAP_DEVICE_ID:

src/gallium/include/pipe/p_defines.h

@@ -815,6 +815,7 @@ enum pipe_cap
    PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS,
    PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE,
    PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS,
+   PIPE_CAP_MAX_GS_INVOCATIONS,
 };
 
 /**

src/mesa/state_tracker/st_extensions.c

@@ -361,6 +361,8 @@ void st_init_limits(struct pipe_screen *screen,
       screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
    c->MaxGeometryTotalOutputComponents =
       screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
+   c->MaxGeometryShaderInvocations =
+      screen->get_param(screen, PIPE_CAP_MAX_GS_INVOCATIONS);
    c->MaxTessPatchComponents =
       MIN2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
            MAX_VARYING) * 4;