From: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Date: Mon, 26 Aug 2019 19:14:11 +0000 (-0700)
Subject: pan/midgard: Use shared psiz clamp pass
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=20237166b60a9fe525c906a3efd1046d2853c40a;p=mesa.git

pan/midgard: Use shared psiz clamp pass

We already had a perfectly cromulent pass for this, but one landed in
common NIR code so let's switch and lighten our tree.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
---

diff --git a/src/gallium/drivers/panfrost/meson.build b/src/gallium/drivers/panfrost/meson.build
index 8d4facec982..c188274236b 100644
--- a/src/gallium/drivers/panfrost/meson.build
+++ b/src/gallium/drivers/panfrost/meson.build
@@ -29,7 +29,6 @@ files_panfrost = files(
   'nir/nir_undef_to_zero.c',
   'nir/nir_lower_blend.c',
   'nir/nir_lower_framebuffer.c',
-  'nir/nir_clamp_psiz.c',
 
   'pan_context.c',
   'pan_afbc.c',
diff --git a/src/gallium/drivers/panfrost/nir/nir_clamp_psiz.c b/src/gallium/drivers/panfrost/nir/nir_clamp_psiz.c
deleted file mode 100644
index 249a400a19e..00000000000
--- a/src/gallium/drivers/panfrost/nir/nir_clamp_psiz.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Copyright (C) 2019 Collabora, Ltd.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-/**
- * @file
- *
- * Clamps writes to VARYING_SLOT_PSIZ to a given limit.
- */
-
-#include "compiler/nir/nir.h"
-#include "compiler/nir/nir_builder.h"
-
-void
-nir_clamp_psiz(nir_shader *shader, float min_size, float max_size);
-
-void
-nir_clamp_psiz(nir_shader *shader, float min_size, float max_size)
-{
-   nir_foreach_function(func, shader) {
-      nir_foreach_block(block, func->impl) {
-         nir_foreach_instr_safe(instr, block) {
-            if (instr->type != nir_instr_type_intrinsic)
-               continue;
-
-            nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
-            if (intr->intrinsic != nir_intrinsic_store_deref)
-               continue;
-
-            nir_variable *var = nir_intrinsic_get_var(intr, 0);
-            if (var->data.location != VARYING_SLOT_PSIZ)
-               continue;
-
-            nir_builder b;
-            nir_builder_init(&b, func->impl);
-            b.cursor = nir_before_instr(instr);
-
-            nir_ssa_def *in_size = nir_ssa_for_src(&b, intr->src[1],
-                  intr->num_components);
-
-            nir_ssa_def *clamped =
-               nir_fmin(&b,
-                        nir_fmax(&b, in_size, nir_imm_float(&b, min_size)),
-                        nir_imm_float(&b, max_size));
-
-            nir_instr_rewrite_src(instr, &intr->src[1],
-                                  nir_src_for_ssa(clamped));
-
-         }
-      }
-
-      nir_metadata_preserve(func->impl, nir_metadata_block_index |
-                            nir_metadata_dominance);
-   }
-}
-
diff --git a/src/panfrost/midgard/compiler.h b/src/panfrost/midgard/compiler.h
index 97795b25cb9..b202a92aeea 100644
--- a/src/panfrost/midgard/compiler.h
+++ b/src/panfrost/midgard/compiler.h
@@ -635,14 +635,9 @@ void emit_binary_bundle(
         struct util_dynarray *emission,
         int next_tag);
 
-/* NIR stuff. TODO: Move? Share? Something? */
-
 bool
 nir_undef_to_zero(nir_shader *shader);
 
-void
-nir_clamp_psiz(nir_shader *shader, float min_size, float max_size);
-
 /* Optimizations */
 
 bool midgard_opt_copy_prop(compiler_context *ctx, midgard_block *block);
diff --git a/src/panfrost/midgard/midgard_compile.c b/src/panfrost/midgard/midgard_compile.c
index eec3e8d56ed..79f33e8006e 100644
--- a/src/panfrost/midgard/midgard_compile.c
+++ b/src/panfrost/midgard/midgard_compile.c
@@ -2525,7 +2525,7 @@ midgard_compile_shader_nir(struct midgard_screen *screen, nir_shader *nir, midga
 
         if (ctx->stage == MESA_SHADER_VERTEX) {
                 NIR_PASS_V(nir, nir_lower_viewport_transform);
-                NIR_PASS_V(nir, nir_clamp_psiz, 1.0, 1024.0);
+                NIR_PASS_V(nir, nir_lower_point_size, 1.0, 1024.0);
         }
 
         NIR_PASS_V(nir, nir_lower_var_copies);