gallium: add shader caps INT16 and FP16_DERIVATIVES

Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5002>

21 files changed, 54 insertions, 3 deletions

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_limits.h b/src/gallium/auxiliary/gallivm/lp_bld_limits.h
index dea0c72c8a6..27a2fcbac1d 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_limits.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_limits.h
@@ -126,6 +126,8 @@ gallivm_get_shader_param(enum pipe_shader_cap param)
       return 1;
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
       return 0;
    case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
       return PIPE_MAX_SAMPLERS;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.h b/src/gallium/auxiliary/tgsi/tgsi_exec.h
index dea4c151975..bd3bc92b567 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.h
@@ -508,6 +508,8 @@ tgsi_exec_get_shader_param(enum pipe_shader_cap param)
       return 1;
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
       return 0;
    case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
       return PIPE_MAX_SAMPLERS;
diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst
index e1dfaccec68..e98bc1cde01 100644
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -650,6 +650,10 @@ MOV OUT[0], CONST[0][3]  # copy vector 3 of constbuf 0
 * ``PIPE_SHADER_CAP_INT64_ATOMICS``: Whether int64 atomic opcodes are supported. The device needs to support add, sub, swap, cmpswap, and, or, xor, min, and max.
 * ``PIPE_SHADER_CAP_FP16``: Whether half precision floating-point opcodes are supported.
    If unsupported, half precision ops need to be lowered to full precision.
+* ``PIPE_SHADER_CAP_FP16_DERIVATIVES``: Whether half precision floating-point
+  DDX and DDY opcodes are supported.
+* ``PIPE_SHADER_CAP_INT16``: Whether 16-bit signed and unsigned integer types
+  are supported.
 * ``PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS``: The maximum number of texture
   samplers.
 * ``PIPE_SHADER_CAP_PREFERRED_IR``: Preferred representation of the
diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index 0e253ba0616..64a6fa2abaf 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -349,6 +349,8 @@ etna_screen_get_shader_param(struct pipe_screen *pscreen,
       return VIV_FEATURE(screen, chipMinorFeatures0, HAS_SQRT_TRIG);
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
       return 0;
    case PIPE_SHADER_CAP_INTEGERS:
       return DBG_ENABLED(ETNA_DBG_NIR) && screen->specs.halti >= 2;
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index 0d8584c2d2e..97a7eca5cc3 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -565,6 +565,8 @@ fd_screen_get_shader_param(struct pipe_screen *pscreen,
 	case PIPE_SHADER_CAP_INTEGERS:
 		return is_ir3(screen) ? 1 : 0;
 	case PIPE_SHADER_CAP_INT64_ATOMICS:
+        case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+        case PIPE_SHADER_CAP_INT16:
 		return 0;
 	case PIPE_SHADER_CAP_FP16:
 		return ((is_a5xx(screen) || is_a6xx(screen)) &&
diff --git a/src/gallium/drivers/i915/i915_screen.c b/src/gallium/drivers/i915/i915_screen.c
index a22eaa95abb..5f7e80538bc 100644
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -160,6 +160,8 @@ i915_get_shader_param(struct pipe_screen *screen,
       case PIPE_SHADER_CAP_INTEGERS:
       case PIPE_SHADER_CAP_INT64_ATOMICS:
       case PIPE_SHADER_CAP_FP16:
+      case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+      case PIPE_SHADER_CAP_INT16:
          return 0;
       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
diff --git a/src/gallium/drivers/iris/iris_screen.c b/src/gallium/drivers/iris/iris_screen.c
index 438ff3b4f6c..73ce8288724 100644
--- a/src/gallium/drivers/iris/iris_screen.c
+++ b/src/gallium/drivers/iris/iris_screen.c
@@ -405,6 +405,8 @@ iris_get_shader_param(struct pipe_screen *pscreen,
       return 1;
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
       return 0;
    case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
    case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
index c4b514cfa61..780377d6897 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -350,6 +350,8 @@ nv30_screen_get_shader_param(struct pipe_screen *pscreen,
       case PIPE_SHADER_CAP_INTEGERS:
       case PIPE_SHADER_CAP_INT64_ATOMICS:
       case PIPE_SHADER_CAP_FP16:
+      case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+      case PIPE_SHADER_CAP_INT16:
       case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
       case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
       case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
@@ -402,6 +404,8 @@ nv30_screen_get_shader_param(struct pipe_screen *pscreen,
       case PIPE_SHADER_CAP_SUBROUTINES:
       case PIPE_SHADER_CAP_INTEGERS:
       case PIPE_SHADER_CAP_FP16:
+      case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+      case PIPE_SHADER_CAP_INT16:
       case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
       case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
       case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index e61d00c0b42..519d69047b3 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -435,6 +435,8 @@ nv50_screen_get_shader_param(struct pipe_screen *pscreen,
       return 1;
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
    case PIPE_SHADER_CAP_SUBROUTINES:
       return 0; /* please inline, or provide function declarations */
    case PIPE_SHADER_CAP_INTEGERS:
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index d1390aa32ad..b3cf5f9fb7a 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -492,6 +492,8 @@ nvc0_screen_get_shader_param(struct pipe_screen *pscreen,
    case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
    case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
    case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTER_BUFFERS:
       return 0;
diff --git a/src/gallium/drivers/panfrost/pan_screen.c b/src/gallium/drivers/panfrost/pan_screen.c
index 96d5b0d2c19..01a5355b87d 100644
--- a/src/gallium/drivers/panfrost/pan_screen.c
+++ b/src/gallium/drivers/panfrost/pan_screen.c
@@ -345,6 +345,8 @@ panfrost_get_shader_param(struct pipe_screen *screen,
         case PIPE_SHADER_CAP_FP16:
                 return !(dev->quirks & MIDGARD_BROKEN_FP16) || is_fp16;
 
+        case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+        case PIPE_SHADER_CAP_INT16:
         case PIPE_SHADER_CAP_INT64_ATOMICS:
         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index d740b8a2033..d363990efbc 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -292,6 +292,8 @@ static int r300_get_shader_param(struct pipe_screen *pscreen,
         case PIPE_SHADER_CAP_INTEGERS:
         case PIPE_SHADER_CAP_INT64_ATOMICS:
         case PIPE_SHADER_CAP_FP16:
+        case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+        case PIPE_SHADER_CAP_INT16:
         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
         case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
@@ -355,6 +357,8 @@ static int r300_get_shader_param(struct pipe_screen *pscreen,
         case PIPE_SHADER_CAP_SUBROUTINES:
         case PIPE_SHADER_CAP_INTEGERS:
         case PIPE_SHADER_CAP_FP16:
+        case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+        case PIPE_SHADER_CAP_INT16:
         case PIPE_SHADER_CAP_INT64_ATOMICS:
         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 27c411a3f26..435aa62ad7c 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -611,6 +611,8 @@ static int r600_get_shader_param(struct pipe_screen* pscreen,
 	case PIPE_SHADER_CAP_SUBROUTINES:
 	case PIPE_SHADER_CAP_INT64_ATOMICS:
 	case PIPE_SHADER_CAP_FP16:
+        case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+        case PIPE_SHADER_CAP_INT16:
 		return 0;
 	case PIPE_SHADER_CAP_INTEGERS:
 	case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
diff --git a/src/gallium/drivers/radeonsi/si_get.c b/src/gallium/drivers/radeonsi/si_get.c
index b5dafcfac36..9a24d391e7e 100644
--- a/src/gallium/drivers/radeonsi/si_get.c
+++ b/src/gallium/drivers/radeonsi/si_get.c
@@ -454,6 +454,8 @@ static int si_get_shader_param(struct pipe_screen *pscreen, enum pipe_shader_typ
 
    /* Unsupported boolean features. */
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
    case PIPE_SHADER_CAP_SUBROUTINES:
    case PIPE_SHADER_CAP_SUPPORTED_IRS:
    case PIPE_SHADER_CAP_MAX_HW_ATOMIC_COUNTERS:
diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index c8db3947e08..2975bfefdfa 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -552,6 +552,8 @@ vgpu9_get_shader_param(struct pipe_screen *screen,
       case PIPE_SHADER_CAP_INTEGERS:
          return 0;
       case PIPE_SHADER_CAP_FP16:
+      case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+      case PIPE_SHADER_CAP_INT16:
          return 0;
       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
@@ -619,6 +621,8 @@ vgpu9_get_shader_param(struct pipe_screen *screen,
       case PIPE_SHADER_CAP_INTEGERS:
          return 0;
       case PIPE_SHADER_CAP_FP16:
+      case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+      case PIPE_SHADER_CAP_INT16:
          return 0;
       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
@@ -719,6 +723,8 @@ vgpu10_get_shader_param(struct pipe_screen *screen,
    case PIPE_SHADER_CAP_INTEGERS:
       return TRUE;
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
       return FALSE;
    case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
    case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
diff --git a/src/gallium/drivers/v3d/v3d_screen.c b/src/gallium/drivers/v3d/v3d_screen.c
index fe0a309c583..b808b56ffcd 100644
--- a/src/gallium/drivers/v3d/v3d_screen.c
+++ b/src/gallium/drivers/v3d/v3d_screen.c
@@ -372,6 +372,8 @@ v3d_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,
         case PIPE_SHADER_CAP_INTEGERS:
                 return 1;
         case PIPE_SHADER_CAP_FP16:
+        case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+        case PIPE_SHADER_CAP_INT16:
         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
         case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c
index faa36c722ae..cd3c6f56dd7 100644
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -277,6 +277,8 @@ vc4_screen_get_shader_param(struct pipe_screen *pscreen,
                 return 1;
         case PIPE_SHADER_CAP_INT64_ATOMICS:
         case PIPE_SHADER_CAP_FP16:
+        case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+        case PIPE_SHADER_CAP_INT16:
         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
         case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index 4cbca21ac96..f646b194dac 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -463,6 +463,8 @@ virgl_get_shader_param(struct pipe_screen *screen,
       case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
       case PIPE_SHADER_CAP_INT64_ATOMICS:
       case PIPE_SHADER_CAP_FP16:
+      case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+      case PIPE_SHADER_CAP_INT16:
          return 0;
       default:
          return 0;
diff --git a/src/gallium/drivers/zink/zink_screen.c b/src/gallium/drivers/zink/zink_screen.c
index 2030c193e58..6ec29da2fe0 100644
--- a/src/gallium/drivers/zink/zink_screen.c
+++ b/src/gallium/drivers/zink/zink_screen.c
@@ -421,6 +421,8 @@ zink_get_shader_param(struct pipe_screen *pscreen,
    case PIPE_SHADER_CAP_SUBROUTINES:
    case PIPE_SHADER_CAP_INT64_ATOMICS:
    case PIPE_SHADER_CAP_FP16:
+   case PIPE_SHADER_CAP_FP16_DERIVATIVES:
+   case PIPE_SHADER_CAP_INT16:
       return 0; /* not implemented */
 
    case PIPE_SHADER_CAP_PREFERRED_IR:
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index e68b6642daf..6354e136597 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -1015,6 +1015,8 @@ enum pipe_shader_cap
    PIPE_SHADER_CAP_INTEGERS,
    PIPE_SHADER_CAP_INT64_ATOMICS,
    PIPE_SHADER_CAP_FP16,
+   PIPE_SHADER_CAP_FP16_DERIVATIVES,
+   PIPE_SHADER_CAP_INT16,
    PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS,
    PIPE_SHADER_CAP_PREFERRED_IR,
    PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED,
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index ca0e5db30d6..461d197a041 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -340,11 +340,12 @@ void st_init_limits(struct pipe_screen *screen,
             options->LowerBuiltinVariablesXfb |= VARYING_BIT_PSIZ;
       }
 
-      /* Initialize lower precision shader compiler option based on
-       * the value of PIPE_SHADER_CAP_FP16.
-       */
       options->LowerPrecisionFloat16 =
          screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_FP16);
+      options->LowerPrecisionDerivatives =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_FP16_DERIVATIVES);
+      options->LowerPrecisionInt16 =
+         screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_INT16);
    }
 
    c->MaxUserAssignableUniformLocations =