Mesa (master): virgl: add ARB_sample_shading support.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: 8f2656c75b8e91a8e90755280845d0e278a62ab4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8f2656c75b8e91a8e90755280845d0e278a62ab4

Author: Dave Airlie <airlied at redhat.com>
Date:   Tue Feb 13 14:08:14 2018 +1000

virgl: add ARB_sample_shading support.

This enable ARB_sample_shading if the renderer supports it.

Signed-off-by: Dave Airlie <airlied at redhat.com>

---

 src/gallium/drivers/virgl/virgl_encode.c   | 3 ++-
 src/gallium/drivers/virgl/virgl_protocol.h | 1 +
 src/gallium/drivers/virgl/virgl_screen.c   | 5 +++--
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/virgl/virgl_encode.c b/src/gallium/drivers/virgl/virgl_encode.c
index 2ee8eac771..80e60bc284 100644
--- a/src/gallium/drivers/virgl/virgl_encode.c
+++ b/src/gallium/drivers/virgl/virgl_encode.c
@@ -180,7 +180,8 @@ int virgl_encode_rasterizer_state(struct virgl_context *ctx,
       VIRGL_OBJ_RS_S0_LINE_STIPPLE_ENABLE(state->line_stipple_enable) |
       VIRGL_OBJ_RS_S0_LINE_LAST_PIXEL(state->line_last_pixel) |
       VIRGL_OBJ_RS_S0_HALF_PIXEL_CENTER(state->half_pixel_center) |
-      VIRGL_OBJ_RS_S0_BOTTOM_EDGE_RULE(state->bottom_edge_rule);
+      VIRGL_OBJ_RS_S0_BOTTOM_EDGE_RULE(state->bottom_edge_rule) |
+      VIRGL_OBJ_RS_S0_FORCE_PERSAMPLE_INTERP(state->force_persample_interp);
 
    virgl_encoder_write_dword(ctx->cbuf, tmp); /* S0 */
    virgl_encoder_write_dword(ctx->cbuf, fui(state->point_size)); /* S1 */
diff --git a/src/gallium/drivers/virgl/virgl_protocol.h b/src/gallium/drivers/virgl/virgl_protocol.h
index 1430422b9c..7688ac5e8e 100644
--- a/src/gallium/drivers/virgl/virgl_protocol.h
+++ b/src/gallium/drivers/virgl/virgl_protocol.h
@@ -181,6 +181,7 @@ enum virgl_context_cmd {
 #define VIRGL_OBJ_RS_S0_LINE_LAST_PIXEL(x) (((x) & 0x1) << 28)
 #define VIRGL_OBJ_RS_S0_HALF_PIXEL_CENTER(x) (((x) & 0x1) << 29)
 #define VIRGL_OBJ_RS_S0_BOTTOM_EDGE_RULE(x) (((x) & 0x1) << 30)
+#define VIRGL_OBJ_RS_S0_FORCE_PERSAMPLE_INTERP(x) (((x) & 0x1) << 31)
 
 #define VIRGL_OBJ_RS_POINT_SIZE 3
 #define VIRGL_OBJ_RS_SPRITE_COORD_ENABLE 4
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index 2af621ec2d..f4f3195ce3 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -193,9 +193,11 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
       return vscreen->caps.caps.v1.max_texture_gather_components;
    case PIPE_CAP_DRAW_INDIRECT:
       return vscreen->caps.caps.v1.bset.has_indirect_draw;
+   case PIPE_CAP_SAMPLE_SHADING:
+   case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
+      return vscreen->caps.caps.v1.bset.has_sample_shading;
    case PIPE_CAP_TEXTURE_GATHER_SM5:
    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
-   case PIPE_CAP_SAMPLE_SHADING:
    case PIPE_CAP_FAKE_SW_MSAA:
    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
@@ -217,7 +219,6 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
    case PIPE_CAP_DEPTH_BOUNDS_TEST:
    case PIPE_CAP_TGSI_TXQS:
-   case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
    case PIPE_CAP_SHAREABLE_SHADERS:
    case PIPE_CAP_CLEAR_TEXTURE:
    case PIPE_CAP_DRAW_PARAMETERS: