gallium: rename PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER

this is now a bitfield enum for more functionality Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Acked-by: Marek Olšák <marek.olsak@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11984>
2021-11-08 12:33:57 -05:00
parent 0b30a7a243
commit c9a47c85da
27 changed files with 52 additions and 36 deletions
--- a/docs/gallium/screen.rst
+++ b/docs/gallium/screen.rst
@@ -177,10 +177,11 @@ The integer capabilities:
 * ``PIPE_CAP_TEXTURE_BUFFER_SAMPLER``: Whether a sampler should still
  be used for PIPE_BUFFER resources (normally a sampler is only used
  if the texture target is PIPE_TEXTURE_*).
-* ``PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER``: Whether it is preferable
-  to use a blit to implement a texture transfer which needs format conversions
+* ``PIPE_CAP_TEXTURE_TRANSFER_MODES``: The ``pipe_texture_transfer_mode`` modes
+  that are supported for implementing a texture transfer which needs format conversions
  and swizzling in gallium frontends. Generally, all hardware drivers with
-  dedicated memory should return 1 and all software rasterizers should return 0.
+  dedicated memory should return PIPE_TEXTURE_TRANSFER_BLIT and all software rasterizers
+  should return PIPE_TEXTURE_TRANSFER_DEFAULT.
 * ``PIPE_CAP_QUERY_PIPELINE_STATISTICS``: Whether PIPE_QUERY_PIPELINE_STATISTICS
  is supported.
 * ``PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK``: Bitmask indicating whether special
--- a/src/gallium/auxiliary/util/u_screen.c
+++ b/src/gallium/auxiliary/util/u_screen.c
@@ -160,8 +160,8 @@ u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
   case PIPE_CAP_TEXTURE_BUFFER_SAMPLER:
      return 0;

-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
-      return 1;
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+      return PIPE_TEXTURE_TRANSFER_BLIT;

   case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
   case PIPE_CAP_QUERY_PIPELINE_STATISTICS_SINGLE:
--- a/src/gallium/drivers/asahi/agx_pipe.c
+++ b/src/gallium/drivers/asahi/agx_pipe.c
@@ -821,7 +821,7 @@ agx_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
   case PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET:
      return 0xffff;

-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
      return 0;

   case PIPE_CAP_ENDIANNESS:
--- a/src/gallium/drivers/crocus/crocus_screen.c
+++ b/src/gallium/drivers/crocus/crocus_screen.c
@@ -305,8 +305,8 @@ crocus_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
      return devinfo->ver >= 7 ? (1 << 27) : 0;
   case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
      return 16; // XXX: u_screen says 256 is the minimum value...
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
-      return true;
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+      return PIPE_TEXTURE_TRANSFER_BLIT;
   case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
      return CROCUS_MAX_TEXTURE_BUFFER_SIZE;
   case PIPE_CAP_MAX_VIEWPORTS:
--- a/src/gallium/drivers/d3d12/d3d12_screen.cpp
+++ b/src/gallium/drivers/d3d12/d3d12_screen.cpp
@@ -220,7 +220,7 @@ d3d12_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
      return 1;

-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
      return 0; /* unsure */

   case PIPE_CAP_ENDIANNESS:
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -237,7 +237,7 @@ etna_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
      return VIV_FEATURE(screen, chipMinorFeatures1, HALTI0);

   /* Preferences */
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
      return 0;
   case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET: {
      /* etnaviv is being run on systems as small as 256MB total RAM so
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -232,7 +232,7 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_COMPUTE:
      return has_compute(screen);

-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
   case PIPE_CAP_PCI_GROUP:
   case PIPE_CAP_PCI_BUS:
   case PIPE_CAP_PCI_DEVICE:
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -399,7 +399,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
   case PIPE_CAP_TGSI_TEXCOORD:
      return 1;

-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
   case PIPE_CAP_PCI_GROUP:
   case PIPE_CAP_PCI_BUS:
   case PIPE_CAP_PCI_DEVICE:
--- a/src/gallium/drivers/iris/iris_resource.c
+++ b/src/gallium/drivers/iris/iris_resource.c
@@ -2406,7 +2406,7 @@ iris_transfer_unmap(struct pipe_context *ctx, struct pipe_transfer *xfer)
 * The pipe->texture_subdata() driver hook.
 *
 * Mesa's state tracker takes this path whenever possible, even with
- * PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER set.
+ * PIPE_CAP_TEXTURE_TRANSFER_MODES set.
 */
 static void
 iris_texture_subdata(struct pipe_context *ctx,
--- a/src/gallium/drivers/iris/iris_screen.c
+++ b/src/gallium/drivers/iris/iris_screen.c
@@ -303,8 +303,8 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
      return 1 << 27;
   case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
      return 16; // XXX: u_screen says 256 is the minimum value...
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
-      return true;
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+      return PIPE_TEXTURE_TRANSFER_BLIT;
   case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
      return IRIS_MAX_TEXTURE_BUFFER_SIZE;
   case PIPE_CAP_MAX_VIEWPORTS:
--- a/src/gallium/drivers/lima/lima_screen.c
+++ b/src/gallium/drivers/lima/lima_screen.c
@@ -146,7 +146,7 @@ lima_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_PCI_FUNCTION:
      return 0;

-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
   case PIPE_CAP_SHAREABLE_SHADERS:
      return 0;

--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -235,7 +235,7 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
      return 134217728;
   case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
      return 16;
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
      return 0;
   case PIPE_CAP_MAX_VIEWPORTS:
      return PIPE_MAX_VIEWPORTS;
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -99,9 +99,10 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
   case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
   case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
   case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
      return 1;
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+      return PIPE_TEXTURE_TRANSFER_BLIT;
   /* nv35 capabilities */
   case PIPE_CAP_DEPTH_BOUNDS_TEST:
      return eng3d->oclass == NV35_3D_CLASS || eng3d->oclass >= NV40_3D_CLASS;
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -229,7 +229,6 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_START_INSTANCE:
   case PIPE_CAP_USER_VERTEX_BUFFERS:
   case PIPE_CAP_TEXTURE_MULTISAMPLE:
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
   case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
   case PIPE_CAP_SAMPLER_VIEW_TARGET:
   case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
@@ -265,6 +264,8 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
   case PIPE_CAP_COMPUTE:
      return 1;
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+      return PIPE_TEXTURE_TRANSFER_BLIT;
   case PIPE_CAP_SEAMLESS_CUBE_MAP:
      return 1; /* class_3d >= NVA0_3D_CLASS; */
   /* supported on nva0+ */
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -313,8 +313,8 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_CLEAR_SCISSORED:
   case PIPE_CAP_GL_CLAMP:
      return 1;
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
-      return nouveau_screen(pscreen)->vram_domain & NOUVEAU_BO_VRAM ? 1 : 0;
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+      return nouveau_screen(pscreen)->vram_domain & NOUVEAU_BO_VRAM ? PIPE_TEXTURE_TRANSFER_BLIT : 0;
   case PIPE_CAP_FBFETCH:
      return class_3d >= NVE4_3D_CLASS ? 1 : 0; /* needs testing on fermi */
   case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
--- a/src/gallium/drivers/panfrost/pan_screen.c
+++ b/src/gallium/drivers/panfrost/pan_screen.c
@@ -246,7 +246,7 @@ panfrost_get_param(struct pipe_screen *screen, enum pipe_cap param)
        case PIPE_CAP_MAX_VERTEX_ELEMENT_SRC_OFFSET:
                return 0xffff;

-        case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+        case PIPE_CAP_TEXTURE_TRANSFER_MODES:
                return 0;

        case PIPE_CAP_ENDIANNESS:
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -140,12 +140,14 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
        case PIPE_CAP_CONDITIONAL_RENDER:
        case PIPE_CAP_TEXTURE_BARRIER:
        case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
-        case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
        case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
        case PIPE_CAP_CLIP_HALFZ:
        case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
            return 1;

+        case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+            return PIPE_TEXTURE_TRANSFER_BLIT;
+
        case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
            return R300_BUFFER_ALIGNMENT;

--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -295,7 +295,6 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_START_INSTANCE:
 	case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 	case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
-	case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 	case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 	case PIPE_CAP_TEXTURE_MULTISAMPLE:
 	case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
@@ -322,6 +321,9 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
        case PIPE_CAP_NIR_ATOMICS_AS_DEREF:
 		return 1;

+	case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+		return PIPE_TEXTURE_TRANSFER_BLIT;
+
 	case PIPE_CAP_SHAREABLE_SHADERS:
 		return 0;

--- a/src/gallium/drivers/radeonsi/si_get.c
+++ b/src/gallium/drivers/radeonsi/si_get.c
@@ -84,7 +84,6 @@ static int si_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
   case PIPE_CAP_VERTEX_COLOR_CLAMPED:
   case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
   case PIPE_CAP_TGSI_INSTANCEID:
   case PIPE_CAP_COMPUTE:
   case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
@@ -164,6 +163,9 @@ static int si_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_TGSI_ATOMINC_WRAP:
      return 1;

+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+      return PIPE_TEXTURE_TRANSFER_BLIT;
+
   case PIPE_CAP_DRAW_VERTEX_STATE:
      return !(sscreen->debug_flags & DBG(NO_FAST_DISPLAY_LIST));

--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -219,7 +219,7 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
      return 65536;
   case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
      return 16;
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
      return 0;
   case PIPE_CAP_MAX_VIEWPORTS:
      return PIPE_MAX_VIEWPORTS;
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -286,7 +286,7 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
   case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
      return sws->have_sm5 ? 410 : (sws->have_vgpu10 ? 330 : 120);

-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
      return 0;

   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
--- a/src/gallium/drivers/swr/swr_screen.cpp
+++ b/src/gallium/drivers/swr/swr_screen.cpp
@@ -306,7 +306,7 @@ swr_get_param(struct pipe_screen *screen, enum pipe_cap param)
      return 1;

      /* unsupported features */
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
   case PIPE_CAP_PCI_GROUP:
   case PIPE_CAP_PCI_BUS:
   case PIPE_CAP_PCI_DEVICE:
--- a/src/gallium/drivers/v3d/v3d_screen.c
+++ b/src/gallium/drivers/v3d/v3d_screen.c
@@ -155,7 +155,7 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
        case PIPE_CAP_NIR_IMAGES_AS_DEREF:
                return 0;

-        case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+        case PIPE_CAP_TEXTURE_TRANSFER_MODES:
                /* XXX perf: we don't want to emit these extra blits for
                 * glReadPixels(), since we still have to do an uncached read
                 * from the GPU of the result after waiting for the TFU blit
@@ -164,7 +164,7 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
                 * dEQP-GLES31.functional.image_load_store.early_fragment_tests.*
                 * and corruption in chromium's rendering.
                 */
-                return 1;
+                return PIPE_TEXTURE_TRANSFER_BLIT;

        case PIPE_CAP_COMPUTE:
                return screen->has_csd && screen->devinfo.ver >= 41;
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -192,7 +192,7 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
   case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
   case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
   case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
   case PIPE_CAP_NIR_IMAGES_AS_DEREF:
      return 0;
   case PIPE_CAP_QUERY_TIMESTAMP:
--- a/src/gallium/drivers/zink/zink_screen.c
+++ b/src/gallium/drivers/zink/zink_screen.c
@@ -544,8 +544,8 @@ zink_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
   case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
      return screen->info.props.limits.minTexelBufferOffsetAlignment;

-   case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
-      return 1;
+   case PIPE_CAP_TEXTURE_TRANSFER_MODES:
+      return PIPE_TEXTURE_TRANSFER_BLIT;

   case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
      return MIN2(get_smallest_buffer_heap(screen),
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -805,7 +805,7 @@ enum pipe_cap
   PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY,
   PIPE_CAP_TGSI_TEXCOORD,
   PIPE_CAP_TEXTURE_BUFFER_SAMPLER,
-   PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER,
+   PIPE_CAP_TEXTURE_TRANSFER_MODES,
   PIPE_CAP_QUERY_PIPELINE_STATISTICS,
   PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK,
   PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE,
@@ -1004,6 +1004,11 @@ enum pipe_cap
   /* XXX do not add caps after PIPE_CAP_LAST! */
 };

+enum pipe_texture_transfer_mode {
+   PIPE_TEXTURE_TRANSFER_DEFAULT = 0,
+   PIPE_TEXTURE_TRANSFER_BLIT = (1 << 0),
+};
+
 /**
 * Possible bits for PIPE_CAP_CONTEXT_PRIORITY_MASK param, which should
 * return a bitmask of the supported priorities.  If the driver does not
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -689,8 +689,10 @@ st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
   st->has_astc_5x5_ldr =
      screen->is_format_supported(screen, PIPE_FORMAT_ASTC_5x5_SRGB,
                                  PIPE_TEXTURE_2D, 0, 0, PIPE_BIND_SAMPLER_VIEW);
-   st->prefer_blit_based_texture_transfer = screen->get_param(screen,
-                              PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
+   {
+      enum pipe_texture_transfer_mode val = screen->get_param(screen, PIPE_CAP_TEXTURE_TRANSFER_MODES);
+      st->prefer_blit_based_texture_transfer = (val & PIPE_TEXTURE_TRANSFER_BLIT) == PIPE_TEXTURE_TRANSFER_BLIT;
+   }
   st->force_persample_in_shader =
      screen->get_param(screen, PIPE_CAP_SAMPLE_SHADING) &&
      !screen->get_param(screen, PIPE_CAP_FORCE_PERSAMPLE_INTERP);