[Mesa-dev] [PATCH v3 059/104] anv/pipeline: Convert lower_input_attachments to deref instructions

[Jason Ekstrand]

---
 src/intel/vulkan/anv_nir_lower_input_attachments.c | 31 +++++++++++-----------
 src/intel/vulkan/anv_pipeline.c                    |  6 ++---
 2 files changed, 19 insertions(+), 18 deletions(-)

diff --git a/src/intel/vulkan/anv_nir_lower_input_attachments.c b/src/intel/vulkan/anv_nir_lower_input_attachments.c
index 6dc4f90..81e5ad5 100644
--- a/src/intel/vulkan/anv_nir_lower_input_attachments.c
+++ b/src/intel/vulkan/anv_nir_lower_input_attachments.c
@@ -43,10 +43,10 @@ load_frag_coord(nir_builder *b)
 static void
 try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load)
 {
+   nir_deref_instr *deref = nir_src_as_deref(load->src[0]);
+   assert(glsl_type_is_image(deref->type));
 
-   const struct glsl_type *image_type =
-      glsl_without_array(load->variables[0]->var->type);
-   enum glsl_sampler_dim image_dim = glsl_get_sampler_dim(image_type);
+   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;
@@ -58,7 +58,7 @@ try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load)
    b.cursor = nir_before_instr(&load->instr);
 
    nir_ssa_def *frag_coord = nir_f2i32(&b, load_frag_coord(&b));
-   nir_ssa_def *offset = nir_ssa_for_src(&b, load->src[0], 2);
+   nir_ssa_def *offset = nir_ssa_for_src(&b, load->src[1], 2);
    nir_ssa_def *pos = nir_iadd(&b, frag_coord, offset);
 
    nir_ssa_def *layer =
@@ -66,11 +66,11 @@ try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load)
    nir_ssa_def *coord =
       nir_vec3(&b, nir_channel(&b, pos, 0), nir_channel(&b, pos, 1), layer);
 
-   nir_tex_instr *tex = nir_tex_instr_create(b.shader, 2 + multisampled);
+   nir_tex_instr *tex = nir_tex_instr_create(b.shader, 3 + multisampled);
 
    tex->op = nir_texop_txf;
 
-   switch (glsl_get_sampler_result_type(image_type)) {
+   switch (glsl_get_sampler_result_type(deref->type)) {
    case GLSL_TYPE_FLOAT:
       tex->dest_type = nir_type_float;
       break;
@@ -86,22 +86,23 @@ try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load)
    tex->is_array = true;
    tex->is_shadow = false;
 
-   tex->texture = nir_deref_var_clone(load->variables[0], tex);
-   tex->sampler = NULL;
    tex->texture_index = 0;
    tex->sampler_index = 0;
 
-   tex->src[0].src_type = nir_tex_src_coord;
-   tex->src[0].src = nir_src_for_ssa(coord);
+   tex->src[0].src_type = nir_tex_src_texture_deref;
+   tex->src[0].src = nir_src_for_ssa(&deref->dest.ssa);
+
+   tex->src[1].src_type = nir_tex_src_coord;
+   tex->src[1].src = nir_src_for_ssa(coord);
    tex->coord_components = 3;
 
-   tex->src[1].src_type = nir_tex_src_lod;
-   tex->src[1].src = nir_src_for_ssa(nir_imm_int(&b, 0));
+   tex->src[2].src_type = nir_tex_src_lod;
+   tex->src[2].src = nir_src_for_ssa(nir_imm_int(&b, 0));
 
    if (image_dim == GLSL_SAMPLER_DIM_SUBPASS_MS) {
       tex->op = nir_texop_txf_ms;
-      tex->src[2].src_type = nir_tex_src_ms_index;
-      tex->src[2].src = load->src[1];
+      tex->src[3].src_type = nir_tex_src_ms_index;
+      tex->src[3].src = load->src[2];
    }
 
    nir_ssa_dest_init(&tex->instr, &tex->dest, 4, 32, NULL);
@@ -127,7 +128,7 @@ anv_nir_lower_input_attachments(nir_shader *shader)
 
             nir_intrinsic_instr *load = nir_instr_as_intrinsic(instr);
 
-            if (load->intrinsic != nir_intrinsic_image_var_load)
+            if (load->intrinsic != nir_intrinsic_image_deref_load)
                continue;
 
             try_lower_input_load(function->impl, load);
diff --git a/src/intel/vulkan/anv_pipeline.c b/src/intel/vulkan/anv_pipeline.c
index b4a9d83..4aef86a 100644
--- a/src/intel/vulkan/anv_pipeline.c
+++ b/src/intel/vulkan/anv_pipeline.c
@@ -215,12 +215,12 @@ anv_shader_compile_to_nir(struct anv_pipeline *pipeline,
 
    nir = brw_preprocess_nir(compiler, nir);
 
-   NIR_PASS_V(nir, nir_lower_deref_instrs,
-              nir_lower_texture_derefs | nir_lower_image_derefs);
-
    if (stage == MESA_SHADER_FRAGMENT)
       NIR_PASS_V(nir, anv_nir_lower_input_attachments);
 
+   NIR_PASS_V(nir, nir_lower_deref_instrs,
+              nir_lower_texture_derefs | nir_lower_image_derefs);
+
    return nir;
 }
 
-- 
2.5.0.400.gff86faf