gallium: add geometry shader output limits

v2: adjust limits for radeonsi and llvmpipe
v3: add documentation

Cc: "10.1" <[email protected]>
Signed-off-by: Marek Olšák <[email protected]>

12 files changed, 43 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index aa294b33250..e1b5daef39f 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -212,6 +212,11 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 		return 0;
 
+	/* Geometry shader output, unsupported. */
+	case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+	case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+		return 0;
+
 	/* Texturing. */
 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
diff --git a/src/gallium/drivers/i915/i915_screen.c b/src/gallium/drivers/i915/i915_screen.c
index a658b1bf3df..9f08f862888 100644
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -257,6 +257,11 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
    case PIPE_CAP_MAX_RENDER_TARGETS:
       return 1;
 
+   /* Geometry shader output, unsupported. */
+   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+      return 0;
+
    /* Fragment coordinate conventions. */
    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
diff --git a/src/gallium/drivers/ilo/ilo_screen.c b/src/gallium/drivers/ilo/ilo_screen.c
index bc8f62d2c19..9c363acb4f7 100644
--- a/src/gallium/drivers/ilo/ilo_screen.c
+++ b/src/gallium/drivers/ilo/ilo_screen.c
@@ -372,6 +372,9 @@ ilo_get_param(struct pipe_screen *screen, enum pipe_cap param)
       return ILO_MAX_SO_BINDINGS / ILO_MAX_SO_BUFFERS;
    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
       return ILO_MAX_SO_BINDINGS;
+   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+      return 0;
    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
       if (is->dev.gen >= ILO_GEN(7))
          return is->dev.has_gen7_sol_reset;
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 3f84d740d27..43142e7fb55 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -187,6 +187,9 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
       return 16*4;
+   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+      return 1024;
    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
       return 1;
    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
index 4045fdcc9d5..8eee06bbb5d 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -106,6 +106,8 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_MAX_TEXEL_OFFSET:
    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
+   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
    case PIPE_CAP_TEXTURE_BARRIER:
    case PIPE_CAP_SEAMLESS_CUBE_MAP:
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index 2144140551a..e636bf8be33 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -141,6 +141,9 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
       return 64;
+   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+      return 1024;
    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
       return (class_3d >= NVA0_3D_CLASS) ? 1 : 0;
    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index 6bf0a3a3093..f84c41b4979 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -125,6 +125,9 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
       return 128;
+   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+      return 1024;
    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
    case PIPE_CAP_INDEP_BLEND_ENABLE:
    case PIPE_CAP_INDEP_BLEND_FUNC:
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index 4b790aff177..fcb01e80864 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -151,6 +151,8 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
+        case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+        case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 2cf36778383..d9b4509e078 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -410,6 +410,12 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 		return 32*4;
 
+	/* Geometry shader output. */
+	case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+		return 1024;
+	case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+		return 16384;
+
 	/* Texturing. */
 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index 1c899269f04..c64621bf223 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -299,6 +299,12 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 		return sscreen->b.has_streamout ? 32*4 : 0;
 
+	/* Geometry shader output. */
+	case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+		return 1024;
+	case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+		return 4095;
+
 	/* Texturing. */
 	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c
index dbdbbc93e4a..147196e6abe 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -119,6 +119,9 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
       return 16*4;
+   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
+      return 0;
    case PIPE_CAP_PRIMITIVE_RESTART:
       return 1;
    case PIPE_CAP_SHADER_STENCIL_EXPORT:
diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index 350ee5cad5b..d5ae69a70d9 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -251,6 +251,8 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
+   case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
+   case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY: