gallium: get rid of PIPE_CAP_SM3

PIPE_CAP_SM3 has always been an odd one out of all our caps. While most
other caps are fine-grained and single-purpose, this cap encode several
features in one. And since OpenGL cares more about single features, it'd
be nice to get rid of this one.

As it turns, this is now relatively simple. We only really care about
three features using this cap, and those already got their own caps. So
we can remove it, and make sure all current drivers just give the same
response to all of them.

The only place we *really* care about SM3 is in nine, and there we can
instead just re-construct the information based on the finer-grained
caps. This avoids DX9 semantics from needlessly leaking into all of the
drivers, most of who doesn't care a whole lot about DX9 specifically.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>

21 files changed, 63 insertions, 28 deletions

diff --git a/src/gallium/auxiliary/util/u_screen.c b/src/gallium/auxiliary/util/u_screen.c
index 4ee1b4f62af..2736deb2c6a 100644
--- a/src/gallium/auxiliary/util/u_screen.c
+++ b/src/gallium/auxiliary/util/u_screen.c
@@ -58,7 +58,9 @@ u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
 
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS: /* enables EXT_transform_feedback */
    case PIPE_CAP_PRIMITIVE_RESTART:
    case PIPE_CAP_INDEP_BLEND_ENABLE:
@@ -370,11 +372,6 @@ u_pipe_screen_get_param_defaults(struct pipe_screen *pscreen,
       return 0;
 #endif
 
-   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
-   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
-   case PIPE_CAP_VERTEX_SHADER_SATURATE:
-      return pscreen->get_param(pscreen, PIPE_CAP_SM3);
-
    default:
       unreachable("bad PIPE_CAP_*");
    }
diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst
index 1f1728d717a..b993087ac3c 100644
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -45,8 +45,6 @@ The integer capabilities:
   with clamp or clamp-to-border wrap modes.
 * ``PIPE_CAP_BLEND_EQUATION_SEPARATE``: Whether alpha blend equations may be different
   from color blend equations, in :ref:`Blend` state.
-* ``PIPE_CAP_SM3``: Whether the vertex shader and fragment shader support equivalent
-  opcodes to the Shader Model 3 specification. XXX oh god this is horrible
 * ``PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS``: The maximum number of stream buffers.
 * ``PIPE_CAP_PRIMITIVE_RESTART``: Whether primitive restart is supported.
 * ``PIPE_CAP_INDEP_BLEND_ENABLE``: Whether per-rendertarget blend enabling and channel
diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index 18c581fda20..519c25d5474 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -140,7 +140,9 @@ etna_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_TEXTURE_BARRIER:
    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c
index 6c3e8a000a7..f0853ffd002 100644
--- a/src/gallium/drivers/freedreno/freedreno_screen.c
+++ b/src/gallium/drivers/freedreno/freedreno_screen.c
@@ -217,7 +217,9 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
 		return 0;
 
-	case PIPE_CAP_SM3:
+	case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+	case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+	case PIPE_CAP_VERTEX_SHADER_SATURATE:
 	case PIPE_CAP_PRIMITIVE_RESTART:
 	case PIPE_CAP_TGSI_INSTANCEID:
 	case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
diff --git a/src/gallium/drivers/i915/i915_screen.c b/src/gallium/drivers/i915/i915_screen.c
index 5c96a3ca66f..5ee3ffed0fd 100644
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -219,7 +219,9 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
    case PIPE_CAP_TEXTURE_SWIZZLE:
    case PIPE_CAP_QUERY_TIME_ELAPSED:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_SEAMLESS_CUBE_MAP:
    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
diff --git a/src/gallium/drivers/iris/iris_screen.c b/src/gallium/drivers/iris/iris_screen.c
index 87e593dbafc..bfb70dfdba0 100644
--- a/src/gallium/drivers/iris/iris_screen.c
+++ b/src/gallium/drivers/iris/iris_screen.c
@@ -116,7 +116,9 @@ iris_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_TEXTURE_SWIZZLE:
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_PRIMITIVE_RESTART:
    case PIPE_CAP_INDEP_BLEND_ENABLE:
    case PIPE_CAP_INDEP_BLEND_FUNC:
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index ba55931ee4f..c4aace9aa67 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -112,7 +112,9 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
       return 1;
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
       return 1;
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
       return 1;
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
index 20738e3a95f..248640aa2a3 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -116,7 +116,9 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    /* unsupported */
    case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_INDEP_BLEND_ENABLE:
    case PIPE_CAP_INDEP_BLEND_FUNC:
    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index 3169b1e08cb..4a868e87db6 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -172,7 +172,9 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
    case PIPE_CAP_DEPTH_CLIP_DISABLE:
    case PIPE_CAP_POINT_SPRITE:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index bf883631b86..e209a00828e 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -208,7 +208,9 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_DEPTH_CLIP_DISABLE:
    case PIPE_CAP_POINT_SPRITE:
    case PIPE_CAP_TGSI_TEXCOORD:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
diff --git a/src/gallium/drivers/panfrost/pan_screen.c b/src/gallium/drivers/panfrost/pan_screen.c
index 5e1ea894fb3..5f3712d5f47 100644
--- a/src/gallium/drivers/panfrost/pan_screen.c
+++ b/src/gallium/drivers/panfrost/pan_screen.c
@@ -90,7 +90,9 @@ panfrost_get_param(struct pipe_screen *screen, enum pipe_cap param)
         case PIPE_CAP_NPOT_TEXTURES:
         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
         case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
-        case PIPE_CAP_SM3:
+        case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+        case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+        case PIPE_CAP_VERTEX_SHADER_SATURATE:
         case PIPE_CAP_POINT_SPRITE:
                 return 1;
 
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index b9df321de86..99231f2ad60 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -168,7 +168,9 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
         /* Supported on r500 only. */
         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
-        case PIPE_CAP_SM3:
+        case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+        case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+        case PIPE_CAP_VERTEX_SHADER_SATURATE:
             return is_r500 ? 1 : 0;
 
         /* Unsupported features. */
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 2a14aa05ca5..793f86ef706 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -277,7 +277,9 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 	case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
-	case PIPE_CAP_SM3:
+	case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+	case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+	case PIPE_CAP_VERTEX_SHADER_SATURATE:
 	case PIPE_CAP_SEAMLESS_CUBE_MAP:
 	case PIPE_CAP_PRIMITIVE_RESTART:
 	case PIPE_CAP_CONDITIONAL_RENDER:
diff --git a/src/gallium/drivers/radeonsi/si_get.c b/src/gallium/drivers/radeonsi/si_get.c
index e51cca30671..f2182a91076 100644
--- a/src/gallium/drivers/radeonsi/si_get.c
+++ b/src/gallium/drivers/radeonsi/si_get.c
@@ -71,7 +71,9 @@ static int si_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 	case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 	case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
-	case PIPE_CAP_SM3:
+	case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+	case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+	case PIPE_CAP_VERTEX_SHADER_SATURATE:
 	case PIPE_CAP_SEAMLESS_CUBE_MAP:
 	case PIPE_CAP_PRIMITIVE_RESTART:
 	case PIPE_CAP_CONDITIONAL_RENDER:
diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c
index f9f2e9fc077..2b0916391cb 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -71,7 +71,9 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
       return 1;
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
       return 1;
    case PIPE_CAP_ANISOTROPIC_FILTER:
       return 1;
diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index 373dfcec3a3..cf90c759198 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -283,7 +283,9 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
       return 0;
 
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
       return 1;
 
    case PIPE_CAP_DEPTH_CLIP_DISABLE:
diff --git a/src/gallium/drivers/swr/swr_screen.cpp b/src/gallium/drivers/swr/swr_screen.cpp
index 464cbf4f3fb..f22bb3bf19b 100644
--- a/src/gallium/drivers/swr/swr_screen.cpp
+++ b/src/gallium/drivers/swr/swr_screen.cpp
@@ -228,7 +228,9 @@ swr_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_NPOT_TEXTURES:
    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
    case PIPE_CAP_POINT_SPRITE:
    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
    case PIPE_CAP_OCCLUSION_QUERY:
@@ -1209,4 +1211,3 @@ swr_create_screen_internal(struct sw_winsys *winsys)
 
    return &screen->base;
 }
-
diff --git a/src/gallium/drivers/v3d/v3d_screen.c b/src/gallium/drivers/v3d/v3d_screen.c
index f6edf15bdf8..41020a49409 100644
--- a/src/gallium/drivers/v3d/v3d_screen.c
+++ b/src/gallium/drivers/v3d/v3d_screen.c
@@ -119,7 +119,9 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
         case PIPE_CAP_START_INSTANCE:
         case PIPE_CAP_TGSI_INSTANCEID:
-        case PIPE_CAP_SM3:
+        case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+        case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+        case PIPE_CAP_VERTEX_SHADER_SATURATE:
         case PIPE_CAP_TEXTURE_QUERY_LOD:
         case PIPE_CAP_PRIMITIVE_RESTART:
         case PIPE_CAP_OCCLUSION_QUERY:
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index 9291c97906f..db3a520508e 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -71,7 +71,9 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param)
    switch (param) {
    case PIPE_CAP_NPOT_TEXTURES:
       return 1;
-   case PIPE_CAP_SM3:
+   case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
+   case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
+   case PIPE_CAP_VERTEX_SHADER_SATURATE:
       return 1;
    case PIPE_CAP_ANISOTROPIC_FILTER:
       return 1;
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index 1d589457152..d3afd442046 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -696,7 +696,6 @@ enum pipe_cap
    PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS,
    PIPE_CAP_TEXTURE_MIRROR_CLAMP,
    PIPE_CAP_BLEND_EQUATION_SEPARATE,
-   PIPE_CAP_SM3,
    PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS,
    PIPE_CAP_PRIMITIVE_RESTART,
    /** blend enables and write masks per rendertarget */
diff --git a/src/gallium/state_trackers/nine/adapter9.c b/src/gallium/state_trackers/nine/adapter9.c
index 7ed27de3070..52ea8bff569 100644
--- a/src/gallium/state_trackers/nine/adapter9.c
+++ b/src/gallium/state_trackers/nine/adapter9.c
@@ -34,6 +34,14 @@
 
 #define DBG_CHANNEL DBG_ADAPTER
 
+static bool
+has_sm3(struct pipe_screen *hal)
+{
+    return hal->get_param(hal, PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD) &&
+           hal->get_param(hal, PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES) &&
+           hal->get_param(hal, PIPE_CAP_VERTEX_SHADER_SATURATE);
+}
+
 HRESULT
 NineAdapter9_ctor( struct NineAdapter9 *This,
                    struct NineUnknownParams *pParams,
@@ -65,7 +73,7 @@ NineAdapter9_ctor( struct NineAdapter9 *This,
      * as these are very old, we choose to drop support for them */
 
     /* checks minimum requirements, most are vs3/ps3 strict requirements */
-    if (!hal->get_param(hal, PIPE_CAP_SM3) ||
+    if (!has_sm3(hal) ||
         hal->get_shader_param(hal, PIPE_SHADER_VERTEX,
                               PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE) < 256 * sizeof(float[4]) ||
         hal->get_shader_param(hal, PIPE_SHADER_FRAGMENT,