On 08.09.2017 00:03, Jan Vesely wrote:
Denotes native half precision float operations capability
v2: PIPE_CAP_HALFS -> PIPE_SHADER_CAP_FP16
     fix indentation

Signed-off-by: Jan Vesely <jan.ves...@rutgers.edu>

Reviewed-by: Nicolai Hähnle <nicolai.haeh...@amd.com>


---
I modeled this after PIPE_SHARED_CAP_INTEGERS, but I might have missed
a spot.

  src/gallium/auxiliary/gallivm/lp_bld_limits.h    | 2 ++
  src/gallium/auxiliary/tgsi/tgsi_exec.h           | 2 ++
  src/gallium/docs/source/screen.rst               | 2 ++
  src/gallium/drivers/etnaviv/etnaviv_screen.c     | 1 +
  src/gallium/drivers/freedreno/freedreno_screen.c | 2 ++
  src/gallium/drivers/i915/i915_screen.c           | 1 +
  src/gallium/drivers/nouveau/nv30/nv30_screen.c   | 2 ++
  src/gallium/drivers/nouveau/nv50/nv50_screen.c   | 1 +
  src/gallium/drivers/nouveau/nvc0/nvc0_screen.c   | 1 +
  src/gallium/drivers/r300/r300_screen.c           | 2 ++
  src/gallium/drivers/r600/r600_pipe.c             | 1 +
  src/gallium/drivers/radeonsi/si_pipe.c           | 1 +
  src/gallium/drivers/svga/svga_screen.c           | 6 ++++++
  src/gallium/drivers/vc4/vc4_screen.c             | 1 +
  src/gallium/drivers/virgl/virgl_screen.c         | 1 +
  src/gallium/include/pipe/p_defines.h             | 1 +
  16 files changed, 27 insertions(+)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_limits.h 
b/src/gallium/auxiliary/gallivm/lp_bld_limits.h
index 354e2a46b1..e8cc04a2f9 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_limits.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_limits.h
@@ -118,6 +118,8 @@ gallivm_get_shader_param(enum pipe_shader_cap param)
        return 1;
     case PIPE_SHADER_CAP_INTEGERS:
        return 1;
+   case PIPE_SHADER_CAP_FP16:
+      return 0;
     case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
        return PIPE_MAX_SAMPLERS;
     case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.h 
b/src/gallium/auxiliary/tgsi/tgsi_exec.h
index 9d7e65f2c5..346848cddf 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.h
@@ -511,6 +511,8 @@ tgsi_exec_get_shader_param(enum pipe_shader_cap param)
        return 1;
     case PIPE_SHADER_CAP_INTEGERS:
        return 1;
+   case PIPE_SHADER_CAP_FP16:
+      return 0;
     case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
        return PIPE_MAX_SAMPLERS;
     case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
diff --git a/src/gallium/docs/source/screen.rst 
b/src/gallium/docs/source/screen.rst
index 93d94a48e6..80e63ce14b 100644
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -470,6 +470,8 @@ MOV OUT[0], CONST[0][3]  # copy vector 3 of constbuf 0
    BGNSUB, ENDSUB, CAL, and RET, including RET in the main block.
  * ``PIPE_SHADER_CAP_INTEGERS``: Whether integer opcodes are supported.
    If unsupported, only float opcodes are supported.
+* ``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_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 f400e423de..1e49f60701 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -427,6 +427,7 @@ etna_screen_get_shader_param(struct pipe_screen *pscreen,
     case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
        return VIV_FEATURE(screen, chipMinorFeatures0, HAS_SQRT_TRIG);
     case PIPE_SHADER_CAP_INTEGERS:
+   case PIPE_SHADER_CAP_FP16:
        return 0;
     case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
     case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c 
b/src/gallium/drivers/freedreno/freedreno_screen.c
index b26f67e4e2..46ad5ec9d2 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -526,6 +526,8 @@ fd_screen_get_shader_param(struct pipe_screen *pscreen,
                if (glsl120)
                        return 0;
                return is_ir3(screen) ? 1 : 0;
+       case PIPE_SHADER_CAP_FP16:
+               return 0;
        case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
        case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
                return 16;
diff --git a/src/gallium/drivers/i915/i915_screen.c 
b/src/gallium/drivers/i915/i915_screen.c
index e700e294da..f3427f794d 100644
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -157,6 +157,7 @@ i915_get_shader_param(struct pipe_screen *screen,
        case PIPE_SHADER_CAP_SUBROUTINES:
           return 0;
        case PIPE_SHADER_CAP_INTEGERS:
+      case PIPE_SHADER_CAP_FP16:
           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 72f886c911..1ea33edc41 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -313,6 +313,7 @@ nv30_screen_get_shader_param(struct pipe_screen *pscreen,
        case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
        case PIPE_SHADER_CAP_SUBROUTINES:
        case PIPE_SHADER_CAP_INTEGERS:
+      case PIPE_SHADER_CAP_FP16:
        case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
        case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
        case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
@@ -361,6 +362,7 @@ nv30_screen_get_shader_param(struct pipe_screen *pscreen,
        case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
        case PIPE_SHADER_CAP_SUBROUTINES:
        case PIPE_SHADER_CAP_INTEGERS:
+      case PIPE_SHADER_CAP_FP16:
        case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
        case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
        case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c 
b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index 0f25cd5fed..efbe4c8df8 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -344,6 +344,7 @@ nv50_screen_get_shader_param(struct pipe_screen *pscreen,
        return 1;
     case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
        return 1;
+   case PIPE_SHADER_CAP_FP16:
     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 f64ac2625d..da43cac6d3 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -404,6 +404,7 @@ nvc0_screen_get_shader_param(struct pipe_screen *pscreen,
     case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
     case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
     case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
+   case PIPE_SHADER_CAP_FP16:
        return 0;
     case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
        return NVC0_MAX_BUFFERS;
diff --git a/src/gallium/drivers/r300/r300_screen.c 
b/src/gallium/drivers/r300/r300_screen.c
index ff68ffd7bc..617ec0195a 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -353,6 +353,7 @@ static int r300_get_shader_param(struct pipe_screen 
*pscreen,
          case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
          case PIPE_SHADER_CAP_SUBROUTINES:
          case PIPE_SHADER_CAP_INTEGERS:
+        case PIPE_SHADER_CAP_FP16:
          case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
          case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
          case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
@@ -412,6 +413,7 @@ static int r300_get_shader_param(struct pipe_screen 
*pscreen,
          case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
          case PIPE_SHADER_CAP_SUBROUTINES:
          case PIPE_SHADER_CAP_INTEGERS:
+        case PIPE_SHADER_CAP_FP16:
          case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
          case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
          case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
diff --git a/src/gallium/drivers/r600/r600_pipe.c 
b/src/gallium/drivers/r600/r600_pipe.c
index 9844add605..162a9f2545 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -569,6 +569,7 @@ static int r600_get_shader_param(struct pipe_screen* 
pscreen,
        case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
                return 1;
        case PIPE_SHADER_CAP_SUBROUTINES:
+       case PIPE_SHADER_CAP_FP16:
                return 0;
        case PIPE_SHADER_CAP_INTEGERS:
        case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
diff --git a/src/gallium/drivers/radeonsi/si_pipe.c 
b/src/gallium/drivers/radeonsi/si_pipe.c
index ca2e055a90..3799b21810 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -741,6 +741,7 @@ static int si_get_shader_param(struct pipe_screen* pscreen,
        case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
        case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
        case PIPE_SHADER_CAP_INTEGERS:
+       case PIPE_SHADER_CAP_FP16:
        case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
        case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
        case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
diff --git a/src/gallium/drivers/svga/svga_screen.c 
b/src/gallium/drivers/svga/svga_screen.c
index ef3e07ea38..58289e114d 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -518,6 +518,8 @@ vgpu9_get_shader_param(struct pipe_screen *screen,
           return 0;
        case PIPE_SHADER_CAP_INTEGERS:
           return 0;
+      case PIPE_SHADER_CAP_FP16:
+         return 0;
        case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
        case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
           return 16;
@@ -579,6 +581,8 @@ vgpu9_get_shader_param(struct pipe_screen *screen,
           return 0;
        case PIPE_SHADER_CAP_INTEGERS:
           return 0;
+      case PIPE_SHADER_CAP_FP16:
+         return 0;
        case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
        case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
           return 0;
@@ -674,6 +678,8 @@ vgpu10_get_shader_param(struct pipe_screen *screen,
     case PIPE_SHADER_CAP_SUBROUTINES:
     case PIPE_SHADER_CAP_INTEGERS:
        return TRUE;
+   case PIPE_SHADER_CAP_FP16:
+      return FALSE;
     case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
     case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
        return SVGA3D_DX_MAX_SAMPLERS;
diff --git a/src/gallium/drivers/vc4/vc4_screen.c 
b/src/gallium/drivers/vc4/vc4_screen.c
index e206456f24..dab902520b 100644
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -406,6 +406,7 @@ vc4_screen_get_shader_param(struct pipe_screen *pscreen,
                  return 0;
          case PIPE_SHADER_CAP_INTEGERS:
                  return 1;
+        case PIPE_SHADER_CAP_FP16:
          case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
          case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
          case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
diff --git a/src/gallium/drivers/virgl/virgl_screen.c 
b/src/gallium/drivers/virgl/virgl_screen.c
index 68d74adadd..e61a7098aa 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -334,6 +334,7 @@ virgl_get_shader_param(struct pipe_screen *screen,
           return 4096 * sizeof(float[4]);
        case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
        case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
+      case PIPE_SHADER_CAP_FP16:
        default:
           return 0;
        }
diff --git a/src/gallium/include/pipe/p_defines.h 
b/src/gallium/include/pipe/p_defines.h
index da7d5da734..6811aaefc9 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -830,6 +830,7 @@ enum pipe_shader_cap
     PIPE_SHADER_CAP_INDIRECT_CONST_ADDR,
     PIPE_SHADER_CAP_SUBROUTINES, /* BGNSUB, ENDSUB, CAL, RET */
     PIPE_SHADER_CAP_INTEGERS,
+   PIPE_SHADER_CAP_FP16,
     PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS,
     PIPE_SHADER_CAP_PREFERRED_IR,
     PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED,



--
Lerne, wie die Welt wirklich ist,
Aber vergiss niemals, wie sie sein sollte.
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