anv,nir: Move lower_input_attachments pass from ANV to NIR.

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

src/compiler/Makefile.sources

@@ -256,6 +256,7 @@ NIR_FILES = \
 	nir/nir_lower_locals_to_regs.c \
 	nir/nir_lower_idiv.c \
 	nir/nir_lower_indirect_derefs.c \
+	nir/nir_lower_input_attachments.c \
 	nir/nir_lower_int64.c \
 	nir/nir_lower_interpolation.c \
 	nir/nir_lower_int_to_float.c \

src/compiler/nir/meson.build

@@ -134,6 +134,7 @@ files_libnir = files(
   'nir_lower_locals_to_regs.c',
   'nir_lower_idiv.c',
   'nir_lower_indirect_derefs.c',
+  'nir_lower_input_attachments.c',
   'nir_lower_int64.c',
   'nir_lower_interpolation.c',
   'nir_lower_int_to_float.c',

src/compiler/nir/nir.h

@@ -3494,6 +3494,8 @@ bool nir_lower_non_uniform_access(nir_shader *shader,
 
 bool nir_lower_idiv(nir_shader *shader);
 
+bool nir_lower_input_attachments(nir_shader *shader);
+
 bool nir_lower_clip_vs(nir_shader *shader, unsigned ucp_enables, bool use_vars);
 bool nir_lower_clip_fs(nir_shader *shader, unsigned ucp_enables);
 bool nir_lower_clip_cull_distance_arrays(nir_shader *nir);

src/compiler/nir/nir_lower_input_attachments.c

@@ -21,8 +21,8 @@
  * IN THE SOFTWARE.
  */
 
-#include "anv_nir.h"
+#include "nir.h"
-#include "nir/nir_builder.h"
+#include "nir_builder.h"
 
 static nir_ssa_def *
 load_frag_coord(nir_builder *b)
@@ -47,7 +47,7 @@ load_frag_coord(nir_builder *b)
    return nir_load_var(b, pos);
 }
 
-static void
+static bool
 try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load)
 {
    nir_deref_instr *deref = nir_src_as_deref(load->src[0]);
@@ -56,7 +56,7 @@ try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load)
    enum glsl_sampler_dim image_dim = glsl_get_sampler_dim(deref->type);
    if (image_dim != GLSL_SAMPLER_DIM_SUBPASS &&
        image_dim != GLSL_SAMPLER_DIM_SUBPASS_MS)
-      return;
+      return false;
 
    const bool multisampled = (image_dim == GLSL_SAMPLER_DIM_SUBPASS_MS);
 
@@ -75,6 +75,7 @@ try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load)
    nir_tex_instr *tex = nir_tex_instr_create(b.shader, 3 + multisampled);
 
    tex->op = nir_texop_txf;
+   tex->sampler_dim = image_dim;
 
    switch (glsl_get_sampler_result_type(deref->type)) {
    case GLSL_TYPE_FLOAT:
@@ -116,12 +117,15 @@ try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load)
 
    nir_ssa_def_rewrite_uses(&load->dest.ssa,
                             nir_src_for_ssa(&tex->dest.ssa));
+
+   return true;
 }
 
-void
+bool
-anv_nir_lower_input_attachments(nir_shader *shader)
+nir_lower_input_attachments(nir_shader *shader)
 {
    assert(shader->info.stage == MESA_SHADER_FRAGMENT);
+   bool progress = false;
 
    nir_foreach_function(function, shader) {
       if (!function->impl)
@@ -137,8 +141,10 @@ anv_nir_lower_input_attachments(nir_shader *shader)
             if (load->intrinsic != nir_intrinsic_image_deref_load)
                continue;
 
-            try_lower_input_load(function->impl, load);
+            progress |= try_lower_input_load(function->impl, load);
          }
       }
    }
+
+   return progress;
 }

src/intel/Makefile.sources

@@ -245,7 +245,6 @@ VULKAN_FILES := \
 	vulkan/anv_nir.h \
 	vulkan/anv_nir_add_base_work_group_id.c \
 	vulkan/anv_nir_apply_pipeline_layout.c \
-	vulkan/anv_nir_lower_input_attachments.c \
 	vulkan/anv_nir_lower_multiview.c \
 	vulkan/anv_nir_lower_push_constants.c \
 	vulkan/anv_nir_lower_ycbcr_textures.c \

src/intel/vulkan/anv_nir.h

@@ -31,8 +31,6 @@
 extern "C" {
 #endif
 
-void anv_nir_lower_input_attachments(nir_shader *shader);
-
 void anv_nir_lower_push_constants(nir_shader *shader);
 
 bool anv_nir_lower_multiview(nir_shader *shader, uint32_t view_mask);

src/intel/vulkan/anv_pipeline.c

@@ -607,7 +607,7 @@ anv_pipeline_lower_nir(struct anv_pipeline *pipeline,
 
    if (nir->info.stage == MESA_SHADER_FRAGMENT) {
       NIR_PASS_V(nir, nir_lower_wpos_center, pipeline->sample_shading_enable);
-      NIR_PASS_V(nir, anv_nir_lower_input_attachments);
+      NIR_PASS_V(nir, nir_lower_input_attachments);
    }
 
    NIR_PASS_V(nir, anv_nir_lower_ycbcr_textures, layout);

src/intel/vulkan/meson.build

@@ -126,7 +126,6 @@ libanv_files = files(
   'anv_nir.h',
   'anv_nir_add_base_work_group_id.c',
   'anv_nir_apply_pipeline_layout.c',
-  'anv_nir_lower_input_attachments.c',
   'anv_nir_lower_multiview.c',
   'anv_nir_lower_push_constants.c',
   'anv_nir_lower_ycbcr_textures.c',