/*
 * Copyright © 2016 Dave Airlie
 *
 * 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.
 */

#include <assert.h>
#include <stdbool.h>

#include "nir/nir_builder.h"
#include "radv_meta.h"
#include "radv_private.h"
#include "sid.h"
#include "vk_format.h"

static nir_ssa_def *
radv_meta_build_resolve_srgb_conversion(nir_builder *b, nir_ssa_def *input)
{
   unsigned i;

   nir_ssa_def *cmp[3];
   for (i = 0; i < 3; i++)
      cmp[i] = nir_flt(b, nir_channel(b, input, i), nir_imm_int(b, 0x3b4d2e1c));

   nir_ssa_def *ltvals[3];
   for (i = 0; i < 3; i++)
      ltvals[i] = nir_fmul(b, nir_channel(b, input, i), nir_imm_float(b, 12.92));

   nir_ssa_def *gtvals[3];

   for (i = 0; i < 3; i++) {
      gtvals[i] = nir_fpow(b, nir_channel(b, input, i), nir_imm_float(b, 1.0 / 2.4));
      gtvals[i] = nir_fmul(b, gtvals[i], nir_imm_float(b, 1.055));
      gtvals[i] = nir_fsub(b, gtvals[i], nir_imm_float(b, 0.055));
   }

   nir_ssa_def *comp[4];
   for (i = 0; i < 3; i++)
      comp[i] = nir_bcsel(b, cmp[i], ltvals[i], gtvals[i]);
   comp[3] = nir_channels(b, input, 1 << 3);
   return nir_vec(b, comp, 4);
}

static nir_shader *
build_resolve_compute_shader(struct radv_device *dev, bool is_integer, bool is_srgb, int samples)
{
   const struct glsl_type *sampler_type =
      glsl_sampler_type(GLSL_SAMPLER_DIM_MS, false, false, GLSL_TYPE_FLOAT);
   const struct glsl_type *img_type = glsl_image_type(GLSL_SAMPLER_DIM_2D, false, GLSL_TYPE_FLOAT);
   nir_builder b =
      nir_builder_init_simple_shader(MESA_SHADER_COMPUTE, NULL, "meta_resolve_cs-%d-%s", samples,
                                     is_integer ? "int" : (is_srgb ? "srgb" : "float"));
   b.shader->info.cs.local_size[0] = 8;
   b.shader->info.cs.local_size[1] = 8;
   b.shader->info.cs.local_size[2] = 1;

   nir_variable *input_img = nir_variable_create(b.shader, nir_var_uniform, sampler_type, "s_tex");
   input_img->data.descriptor_set = 0;
   input_img->data.binding = 0;

   nir_variable *output_img = nir_variable_create(b.shader, nir_var_uniform, img_type, "out_img");
   output_img->data.descriptor_set = 0;
   output_img->data.binding = 1;
   nir_ssa_def *invoc_id = nir_load_local_invocation_id(&b);
   nir_ssa_def *wg_id = nir_load_work_group_id(&b, 32);
   nir_ssa_def *block_size =
      nir_imm_ivec4(&b, b.shader->info.cs.local_size[0], b.shader->info.cs.local_size[1],
                    b.shader->info.cs.local_size[2], 0);

   nir_ssa_def *global_id = nir_iadd(&b, nir_imul(&b, wg_id, block_size), invoc_id);

   nir_ssa_def *src_offset = nir_load_push_constant(&b, 2, 32, nir_imm_int(&b, 0), .range = 16);
   nir_ssa_def *dst_offset = nir_load_push_constant(&b, 2, 32, nir_imm_int(&b, 8), .range = 16);

   nir_ssa_def *img_coord = nir_channels(&b, nir_iadd(&b, global_id, src_offset), 0x3);
   nir_variable *color = nir_local_variable_create(b.impl, glsl_vec4_type(), "color");

   radv_meta_build_resolve_shader_core(&b, is_integer, samples, input_img, color, img_coord);

   nir_ssa_def *outval = nir_load_var(&b, color);
   if (is_srgb)
      outval = radv_meta_build_resolve_srgb_conversion(&b, outval);

   nir_ssa_def *coord = nir_iadd(&b, global_id, dst_offset);
   nir_image_deref_store(&b, &nir_build_deref_var(&b, output_img)->dest.ssa, coord,
                         nir_ssa_undef(&b, 1, 32), outval, nir_imm_int(&b, 0));
   return b.shader;
}

enum {
   DEPTH_RESOLVE,
   STENCIL_RESOLVE,
};

static const char *
get_resolve_mode_str(VkResolveModeFlagBits resolve_mode)
{
   switch (resolve_mode) {
   case VK_RESOLVE_MODE_SAMPLE_ZERO_BIT_KHR:
      return "zero";
   case VK_RESOLVE_MODE_AVERAGE_BIT_KHR:
      return "average";
   case VK_RESOLVE_MODE_MIN_BIT_KHR:
      return "min";
   case VK_RESOLVE_MODE_MAX_BIT_KHR:
      return "max";
   default:
      unreachable("invalid resolve mode");
   }
}

static nir_shader *
build_depth_stencil_resolve_compute_shader(struct radv_device *dev, int samples, int index,
                                           VkResolveModeFlagBits resolve_mode)
{
   const struct glsl_type *sampler_type =
      glsl_sampler_type(GLSL_SAMPLER_DIM_MS, false, true, GLSL_TYPE_FLOAT);
   const struct glsl_type *img_type = glsl_image_type(GLSL_SAMPLER_DIM_2D, true, GLSL_TYPE_FLOAT);

   nir_builder b = nir_builder_init_simple_shader(
      MESA_SHADER_COMPUTE, NULL, "meta_resolve_cs_%s-%s-%d",
      index == DEPTH_RESOLVE ? "depth" : "stencil", get_resolve_mode_str(resolve_mode), samples);
   b.shader->info.cs.local_size[0] = 8;
   b.shader->info.cs.local_size[1] = 8;
   b.shader->info.cs.local_size[2] = 1;

   nir_variable *input_img = nir_variable_create(b.shader, nir_var_uniform, sampler_type, "s_tex");
   input_img->data.descriptor_set = 0;
   input_img->data.binding = 0;

   nir_variable *output_img = nir_variable_create(b.shader, nir_var_uniform, img_type, "out_img");
   output_img->data.descriptor_set = 0;
   output_img->data.binding = 1;
   nir_ssa_def *invoc_id = nir_load_local_invocation_id(&b);
   nir_ssa_def *wg_id = nir_load_work_group_id(&b, 32);
   nir_ssa_def *block_size =
      nir_imm_ivec4(&b, b.shader->info.cs.local_size[0], b.shader->info.cs.local_size[1],
                    b.shader->info.cs.local_size[2], 0);

   nir_ssa_def *global_id = nir_iadd(&b, nir_imul(&b, wg_id, block_size), invoc_id);
   nir_ssa_def *layer_id = nir_channel(&b, wg_id, 2);

   nir_ssa_def *img_coord =
      nir_vec3(&b, nir_channel(&b, global_id, 0), nir_channel(&b, global_id, 1), layer_id);

   nir_ssa_def *input_img_deref = &nir_build_deref_var(&b, input_img)->dest.ssa;

   nir_alu_type type = index == DEPTH_RESOLVE ? nir_type_float32 : nir_type_uint32;

   nir_tex_instr *tex = nir_tex_instr_create(b.shader, 3);
   tex->sampler_dim = GLSL_SAMPLER_DIM_MS;
   tex->op = nir_texop_txf_ms;
   tex->src[0].src_type = nir_tex_src_coord;
   tex->src[0].src = nir_src_for_ssa(img_coord);
   tex->src[1].src_type = nir_tex_src_ms_index;
   tex->src[1].src = nir_src_for_ssa(nir_imm_int(&b, 0));
   tex->src[2].src_type = nir_tex_src_texture_deref;
   tex->src[2].src = nir_src_for_ssa(input_img_deref);
   tex->dest_type = type;
   tex->is_array = true;
   tex->coord_components = 3;

   nir_ssa_dest_init(&tex->instr, &tex->dest, 4, 32, "tex");
   nir_builder_instr_insert(&b, &tex->instr);

   nir_ssa_def *outval = &tex->dest.ssa;

   if (resolve_mode != VK_RESOLVE_MODE_SAMPLE_ZERO_BIT_KHR) {
      for (int i = 1; i < samples; i++) {
         nir_tex_instr *tex_add = nir_tex_instr_create(b.shader, 3);
         tex_add->sampler_dim = GLSL_SAMPLER_DIM_MS;
         tex_add->op = nir_texop_txf_ms;
         tex_add->src[0].src_type = nir_tex_src_coord;
         tex_add->src[0].src = nir_src_for_ssa(img_coord);
         tex_add->src[1].src_type = nir_tex_src_ms_index;
         tex_add->src[1].src = nir_src_for_ssa(nir_imm_int(&b, i));
         tex_add->src[2].src_type = nir_tex_src_texture_deref;
         tex_add->src[2].src = nir_src_for_ssa(input_img_deref);
         tex_add->dest_type = type;
         tex_add->is_array = true;
         tex_add->coord_components = 3;

         nir_ssa_dest_init(&tex_add->instr, &tex_add->dest, 4, 32, "tex");
         nir_builder_instr_insert(&b, &tex_add->instr);

         switch (resolve_mode) {
         case VK_RESOLVE_MODE_AVERAGE_BIT_KHR:
            assert(index == DEPTH_RESOLVE);
            outval = nir_fadd(&b, outval, &tex_add->dest.ssa);
            break;
         case VK_RESOLVE_MODE_MIN_BIT_KHR:
            if (index == DEPTH_RESOLVE)
               outval = nir_fmin(&b, outval, &tex_add->dest.ssa);
            else
               outval = nir_umin(&b, outval, &tex_add->dest.ssa);
            break;
         case VK_RESOLVE_MODE_MAX_BIT_KHR:
            if (index == DEPTH_RESOLVE)
               outval = nir_fmax(&b, outval, &tex_add->dest.ssa);
            else
               outval = nir_umax(&b, outval, &tex_add->dest.ssa);
            break;
         default:
            unreachable("invalid resolve mode");
         }
      }

      if (resolve_mode == VK_RESOLVE_MODE_AVERAGE_BIT_KHR)
         outval = nir_fdiv(&b, outval, nir_imm_float(&b, samples));
   }

   nir_ssa_def *coord = nir_vec4(&b, nir_channel(&b, img_coord, 0), nir_channel(&b, img_coord, 1),
                                 nir_channel(&b, img_coord, 2), nir_imm_int(&b, 0));
   nir_image_deref_store(&b, &nir_build_deref_var(&b, output_img)->dest.ssa, coord,
                         nir_ssa_undef(&b, 1, 32), outval, nir_imm_int(&b, 0));
   return b.shader;
}

static VkResult
create_layout(struct radv_device *device)
{
   VkResult result;
   /*
    * two descriptors one for the image being sampled
    * one for the buffer being written.
    */
   VkDescriptorSetLayoutCreateInfo ds_create_info = {
      .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
      .flags = VK_DESCRIPTOR_SET_LAYOUT_CREATE_PUSH_DESCRIPTOR_BIT_KHR,
      .bindingCount = 2,
      .pBindings = (VkDescriptorSetLayoutBinding[]){
         {.binding = 0,
          .descriptorType = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
          .descriptorCount = 1,
          .stageFlags = VK_SHADER_STAGE_COMPUTE_BIT,
          .pImmutableSamplers = NULL},
         {.binding = 1,
          .descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
          .descriptorCount = 1,
          .stageFlags = VK_SHADER_STAGE_COMPUTE_BIT,
          .pImmutableSamplers = NULL},
      }};

   result = radv_CreateDescriptorSetLayout(radv_device_to_handle(device), &ds_create_info,
                                           &device->meta_state.alloc,
                                           &device->meta_state.resolve_compute.ds_layout);
   if (result != VK_SUCCESS)
      goto fail;

   VkPipelineLayoutCreateInfo pl_create_info = {
      .sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
      .setLayoutCount = 1,
      .pSetLayouts = &device->meta_state.resolve_compute.ds_layout,
      .pushConstantRangeCount = 1,
      .pPushConstantRanges = &(VkPushConstantRange){VK_SHADER_STAGE_COMPUTE_BIT, 0, 16},
   };

   result = radv_CreatePipelineLayout(radv_device_to_handle(device), &pl_create_info,
                                      &device->meta_state.alloc,
                                      &device->meta_state.resolve_compute.p_layout);
   if (result != VK_SUCCESS)
      goto fail;
   return VK_SUCCESS;
fail:
   return result;
}

static VkResult
create_resolve_pipeline(struct radv_device *device, int samples, bool is_integer, bool is_srgb,
                        VkPipeline *pipeline)
{
   VkResult result;

   mtx_lock(&device->meta_state.mtx);
   if (*pipeline) {
      mtx_unlock(&device->meta_state.mtx);
      return VK_SUCCESS;
   }

   nir_shader *cs = build_resolve_compute_shader(device, is_integer, is_srgb, samples);

   /* compute shader */

   VkPipelineShaderStageCreateInfo pipeline_shader_stage = {
      .sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
      .stage = VK_SHADER_STAGE_COMPUTE_BIT,
      .module = vk_shader_module_handle_from_nir(cs),
      .pName = "main",
      .pSpecializationInfo = NULL,
   };

   VkComputePipelineCreateInfo vk_pipeline_info = {
      .sType = VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO,
      .stage = pipeline_shader_stage,
      .flags = 0,
      .layout = device->meta_state.resolve_compute.p_layout,
   };

   result = radv_CreateComputePipelines(radv_device_to_handle(device),
                                        radv_pipeline_cache_to_handle(&device->meta_state.cache), 1,
                                        &vk_pipeline_info, NULL, pipeline);
   if (result != VK_SUCCESS)
      goto fail;

   ralloc_free(cs);
   mtx_unlock(&device->meta_state.mtx);
   return VK_SUCCESS;
fail:
   ralloc_free(cs);
   mtx_unlock(&device->meta_state.mtx);
   return result;
}

static VkResult
create_depth_stencil_resolve_pipeline(struct radv_device *device, int samples, int index,
                                      VkResolveModeFlagBits resolve_mode, VkPipeline *pipeline)
{
   VkResult result;

   mtx_lock(&device->meta_state.mtx);
   if (*pipeline) {
      mtx_unlock(&device->meta_state.mtx);
      return VK_SUCCESS;
   }

   nir_shader *cs =
      build_depth_stencil_resolve_compute_shader(device, samples, index, resolve_mode);

   /* compute shader */
   VkPipelineShaderStageCreateInfo pipeline_shader_stage = {
      .sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
      .stage = VK_SHADER_STAGE_COMPUTE_BIT,
      .module = vk_shader_module_handle_from_nir(cs),
      .pName = "main",
      .pSpecializationInfo = NULL,
   };

   VkComputePipelineCreateInfo vk_pipeline_info = {
      .sType = VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO,
      .stage = pipeline_shader_stage,
      .flags = 0,
      .layout = device->meta_state.resolve_compute.p_layout,
   };

   result = radv_CreateComputePipelines(radv_device_to_handle(device),
                                        radv_pipeline_cache_to_handle(&device->meta_state.cache), 1,
                                        &vk_pipeline_info, NULL, pipeline);
   if (result != VK_SUCCESS)
      goto fail;

   ralloc_free(cs);
   mtx_unlock(&device->meta_state.mtx);
   return VK_SUCCESS;
fail:
   ralloc_free(cs);
   mtx_unlock(&device->meta_state.mtx);
   return result;
}

VkResult
radv_device_init_meta_resolve_compute_state(struct radv_device *device, bool on_demand)
{
   struct radv_meta_state *state = &device->meta_state;
   VkResult res;

   res = create_layout(device);
   if (res != VK_SUCCESS)
      goto fail;

   if (on_demand)
      return VK_SUCCESS;

   for (uint32_t i = 0; i < MAX_SAMPLES_LOG2; ++i) {
      uint32_t samples = 1 << i;

      res = create_resolve_pipeline(device, samples, false, false,
                                    &state->resolve_compute.rc[i].pipeline);
      if (res != VK_SUCCESS)
         goto fail;

      res = create_resolve_pipeline(device, samples, true, false,
                                    &state->resolve_compute.rc[i].i_pipeline);
      if (res != VK_SUCCESS)
         goto fail;

      res = create_resolve_pipeline(device, samples, false, true,
                                    &state->resolve_compute.rc[i].srgb_pipeline);
      if (res != VK_SUCCESS)
         goto fail;

      res = create_depth_stencil_resolve_pipeline(
         device, samples, DEPTH_RESOLVE, VK_RESOLVE_MODE_AVERAGE_BIT_KHR,
         &state->resolve_compute.depth[i].average_pipeline);
      if (res != VK_SUCCESS)
         goto fail;

      res = create_depth_stencil_resolve_pipeline(device, samples, DEPTH_RESOLVE,
                                                  VK_RESOLVE_MODE_MAX_BIT_KHR,
                                                  &state->resolve_compute.depth[i].max_pipeline);
      if (res != VK_SUCCESS)
         goto fail;

      res = create_depth_stencil_resolve_pipeline(device, samples, DEPTH_RESOLVE,
                                                  VK_RESOLVE_MODE_MIN_BIT_KHR,
                                                  &state->resolve_compute.depth[i].min_pipeline);
      if (res != VK_SUCCESS)
         goto fail;

      res = create_depth_stencil_resolve_pipeline(device, samples, STENCIL_RESOLVE,
                                                  VK_RESOLVE_MODE_MAX_BIT_KHR,
                                                  &state->resolve_compute.stencil[i].max_pipeline);
      if (res != VK_SUCCESS)
         goto fail;

      res = create_depth_stencil_resolve_pipeline(device, samples, STENCIL_RESOLVE,
                                                  VK_RESOLVE_MODE_MIN_BIT_KHR,
                                                  &state->resolve_compute.stencil[i].min_pipeline);
      if (res != VK_SUCCESS)
         goto fail;
   }

   res = create_depth_stencil_resolve_pipeline(device, 0, DEPTH_RESOLVE,
                                               VK_RESOLVE_MODE_SAMPLE_ZERO_BIT_KHR,
                                               &state->resolve_compute.depth_zero_pipeline);
   if (res != VK_SUCCESS)
      goto fail;

   res = create_depth_stencil_resolve_pipeline(device, 0, STENCIL_RESOLVE,
                                               VK_RESOLVE_MODE_SAMPLE_ZERO_BIT_KHR,
                                               &state->resolve_compute.stencil_zero_pipeline);
   if (res != VK_SUCCESS)
      goto fail;

   return VK_SUCCESS;
fail:
   radv_device_finish_meta_resolve_compute_state(device);
   return res;
}

void
radv_device_finish_meta_resolve_compute_state(struct radv_device *device)
{
   struct radv_meta_state *state = &device->meta_state;
   for (uint32_t i = 0; i < MAX_SAMPLES_LOG2; ++i) {
      radv_DestroyPipeline(radv_device_to_handle(device), state->resolve_compute.rc[i].pipeline,
                           &state->alloc);

      radv_DestroyPipeline(radv_device_to_handle(device), state->resolve_compute.rc[i].i_pipeline,
                           &state->alloc);

      radv_DestroyPipeline(radv_device_to_handle(device),
                           state->resolve_compute.rc[i].srgb_pipeline, &state->alloc);

      radv_DestroyPipeline(radv_device_to_handle(device),
                           state->resolve_compute.depth[i].average_pipeline, &state->alloc);

      radv_DestroyPipeline(radv_device_to_handle(device),
                           state->resolve_compute.depth[i].max_pipeline, &state->alloc);

      radv_DestroyPipeline(radv_device_to_handle(device),
                           state->resolve_compute.depth[i].min_pipeline, &state->alloc);

      radv_DestroyPipeline(radv_device_to_handle(device),
                           state->resolve_compute.stencil[i].max_pipeline, &state->alloc);

      radv_DestroyPipeline(radv_device_to_handle(device),
                           state->resolve_compute.stencil[i].min_pipeline, &state->alloc);
   }

   radv_DestroyPipeline(radv_device_to_handle(device), state->resolve_compute.depth_zero_pipeline,
                        &state->alloc);

   radv_DestroyPipeline(radv_device_to_handle(device), state->resolve_compute.stencil_zero_pipeline,
                        &state->alloc);

   radv_DestroyDescriptorSetLayout(radv_device_to_handle(device), state->resolve_compute.ds_layout,
                                   &state->alloc);
   radv_DestroyPipelineLayout(radv_device_to_handle(device), state->resolve_compute.p_layout,
                              &state->alloc);
}

static VkPipeline *
radv_get_resolve_pipeline(struct radv_cmd_buffer *cmd_buffer, struct radv_image_view *src_iview)
{
   struct radv_device *device = cmd_buffer->device;
   struct radv_meta_state *state = &device->meta_state;
   uint32_t samples = src_iview->image->info.samples;
   uint32_t samples_log2 = ffs(samples) - 1;
   VkPipeline *pipeline;

   if (vk_format_is_int(src_iview->vk_format))
      pipeline = &state->resolve_compute.rc[samples_log2].i_pipeline;
   else if (vk_format_is_srgb(src_iview->vk_format))
      pipeline = &state->resolve_compute.rc[samples_log2].srgb_pipeline;
   else
      pipeline = &state->resolve_compute.rc[samples_log2].pipeline;

   if (!*pipeline) {
      VkResult ret;

      ret = create_resolve_pipeline(device, samples, vk_format_is_int(src_iview->vk_format),
                                    vk_format_is_srgb(src_iview->vk_format), pipeline);
      if (ret != VK_SUCCESS) {
         cmd_buffer->record_result = ret;
         return NULL;
      }
   }

   return pipeline;
}

static void
emit_resolve(struct radv_cmd_buffer *cmd_buffer, struct radv_image_view *src_iview,
             struct radv_image_view *dest_iview, const VkOffset2D *src_offset,
             const VkOffset2D *dest_offset, const VkExtent2D *resolve_extent)
{
   struct radv_device *device = cmd_buffer->device;
   VkPipeline *pipeline;

   radv_meta_push_descriptor_set(
      cmd_buffer, VK_PIPELINE_BIND_POINT_COMPUTE, device->meta_state.resolve_compute.p_layout,
      0, /* set */
      2, /* descriptorWriteCount */
      (VkWriteDescriptorSet[]){{.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
                                .dstBinding = 0,
                                .dstArrayElement = 0,
                                .descriptorCount = 1,
                                .descriptorType = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
                                .pImageInfo =
                                   (VkDescriptorImageInfo[]){
                                      {.sampler = VK_NULL_HANDLE,
                                       .imageView = radv_image_view_to_handle(src_iview),
                                       .imageLayout = VK_IMAGE_LAYOUT_GENERAL},
                                   }},
                               {.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
                                .dstBinding = 1,
                                .dstArrayElement = 0,
                                .descriptorCount = 1,
                                .descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
                                .pImageInfo = (VkDescriptorImageInfo[]){
                                   {
                                      .sampler = VK_NULL_HANDLE,
                                      .imageView = radv_image_view_to_handle(dest_iview),
                                      .imageLayout = VK_IMAGE_LAYOUT_GENERAL,
                                   },
                                }}});

   pipeline = radv_get_resolve_pipeline(cmd_buffer, src_iview);

   radv_CmdBindPipeline(radv_cmd_buffer_to_handle(cmd_buffer), VK_PIPELINE_BIND_POINT_COMPUTE,
                        *pipeline);

   unsigned push_constants[4] = {
      src_offset->x,
      src_offset->y,
      dest_offset->x,
      dest_offset->y,
   };
   radv_CmdPushConstants(radv_cmd_buffer_to_handle(cmd_buffer),
                         device->meta_state.resolve_compute.p_layout, VK_SHADER_STAGE_COMPUTE_BIT,
                         0, 16, push_constants);
   radv_unaligned_dispatch(cmd_buffer, resolve_extent->width, resolve_extent->height, 1);
}

static void
emit_depth_stencil_resolve(struct radv_cmd_buffer *cmd_buffer, struct radv_image_view *src_iview,
                           struct radv_image_view *dest_iview, const VkExtent3D *resolve_extent,
                           VkImageAspectFlags aspects, VkResolveModeFlagBits resolve_mode)
{
   struct radv_device *device = cmd_buffer->device;
   const uint32_t samples = src_iview->image->info.samples;
   const uint32_t samples_log2 = ffs(samples) - 1;
   VkPipeline *pipeline;

   radv_meta_push_descriptor_set(
      cmd_buffer, VK_PIPELINE_BIND_POINT_COMPUTE, device->meta_state.resolve_compute.p_layout,
      0, /* set */
      2, /* descriptorWriteCount */
      (VkWriteDescriptorSet[]){{.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
                                .dstBinding = 0,
                                .dstArrayElement = 0,
                                .descriptorCount = 1,
                                .descriptorType = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
                                .pImageInfo =
                                   (VkDescriptorImageInfo[]){
                                      {.sampler = VK_NULL_HANDLE,
                                       .imageView = radv_image_view_to_handle(src_iview),
                                       .imageLayout = VK_IMAGE_LAYOUT_GENERAL},
                                   }},
                               {.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
                                .dstBinding = 1,
                                .dstArrayElement = 0,
                                .descriptorCount = 1,
                                .descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
                                .pImageInfo = (VkDescriptorImageInfo[]){
                                   {
                                      .sampler = VK_NULL_HANDLE,
                                      .imageView = radv_image_view_to_handle(dest_iview),
                                      .imageLayout = VK_IMAGE_LAYOUT_GENERAL,
                                   },
                                }}});

   switch (resolve_mode) {
   case VK_RESOLVE_MODE_SAMPLE_ZERO_BIT_KHR:
      if (aspects == VK_IMAGE_ASPECT_DEPTH_BIT)
         pipeline = &device->meta_state.resolve_compute.depth_zero_pipeline;
      else
         pipeline = &device->meta_state.resolve_compute.stencil_zero_pipeline;
      break;
   case VK_RESOLVE_MODE_AVERAGE_BIT_KHR:
      assert(aspects == VK_IMAGE_ASPECT_DEPTH_BIT);
      pipeline = &device->meta_state.resolve_compute.depth[samples_log2].average_pipeline;
      break;
   case VK_RESOLVE_MODE_MIN_BIT_KHR:
      if (aspects == VK_IMAGE_ASPECT_DEPTH_BIT)
         pipeline = &device->meta_state.resolve_compute.depth[samples_log2].min_pipeline;
      else
         pipeline = &device->meta_state.resolve_compute.stencil[samples_log2].min_pipeline;
      break;
   case VK_RESOLVE_MODE_MAX_BIT_KHR:
      if (aspects == VK_IMAGE_ASPECT_DEPTH_BIT)
         pipeline = &device->meta_state.resolve_compute.depth[samples_log2].max_pipeline;
      else
         pipeline = &device->meta_state.resolve_compute.stencil[samples_log2].max_pipeline;
      break;
   default:
      unreachable("invalid resolve mode");
   }

   if (!*pipeline) {
      int index = aspects == VK_IMAGE_ASPECT_DEPTH_BIT ? DEPTH_RESOLVE : STENCIL_RESOLVE;
      VkResult ret;

      ret = create_depth_stencil_resolve_pipeline(device, samples, index, resolve_mode, pipeline);
      if (ret != VK_SUCCESS) {
         cmd_buffer->record_result = ret;
         return;
      }
   }

   radv_CmdBindPipeline(radv_cmd_buffer_to_handle(cmd_buffer), VK_PIPELINE_BIND_POINT_COMPUTE,
                        *pipeline);

   radv_unaligned_dispatch(cmd_buffer, resolve_extent->width, resolve_extent->height,
                           resolve_extent->depth);
}

void
radv_meta_resolve_compute_image(struct radv_cmd_buffer *cmd_buffer, struct radv_image *src_image,
                                VkFormat src_format, VkImageLayout src_image_layout,
                                struct radv_image *dest_image, VkFormat dest_format,
                                VkImageLayout dest_image_layout, const VkImageResolve2KHR *region)
{
   struct radv_meta_saved_state saved_state;

   radv_decompress_resolve_src(cmd_buffer, src_image, src_image_layout, region);

   /* For partial resolves, DCC should be decompressed before resolving
    * because the metadata is re-initialized to the uncompressed after.
    */
   uint32_t queue_mask = radv_image_queue_family_mask(dest_image, cmd_buffer->queue_family_index,
                                                      cmd_buffer->queue_family_index);

   if (radv_dcc_enabled(dest_image, region->dstSubresource.mipLevel) &&
       radv_layout_dcc_compressed(cmd_buffer->device, dest_image, dest_image_layout, false,
                                  queue_mask) &&
       (region->dstOffset.x || region->dstOffset.y || region->dstOffset.z ||
        region->extent.width != dest_image->info.width ||
        region->extent.height != dest_image->info.height ||
        region->extent.depth != dest_image->info.depth)) {
      radv_decompress_dcc(cmd_buffer, dest_image,
                          &(VkImageSubresourceRange){
                             .aspectMask = region->dstSubresource.aspectMask,
                             .baseMipLevel = region->dstSubresource.mipLevel,
                             .levelCount = 1,
                             .baseArrayLayer = region->dstSubresource.baseArrayLayer,
                             .layerCount = region->dstSubresource.layerCount,
                          });
   }

   radv_meta_save(
      &saved_state, cmd_buffer,
      RADV_META_SAVE_COMPUTE_PIPELINE | RADV_META_SAVE_CONSTANTS | RADV_META_SAVE_DESCRIPTORS);

   assert(region->srcSubresource.aspectMask == VK_IMAGE_ASPECT_COLOR_BIT);
   assert(region->dstSubresource.aspectMask == VK_IMAGE_ASPECT_COLOR_BIT);
   assert(region->srcSubresource.layerCount == region->dstSubresource.layerCount);

   const uint32_t src_base_layer =
      radv_meta_get_iview_layer(src_image, &region->srcSubresource, &region->srcOffset);

   const uint32_t dest_base_layer =
      radv_meta_get_iview_layer(dest_image, &region->dstSubresource, &region->dstOffset);

   const struct VkExtent3D extent = radv_sanitize_image_extent(src_image->type, region->extent);
   const struct VkOffset3D srcOffset =
      radv_sanitize_image_offset(src_image->type, region->srcOffset);
   const struct VkOffset3D dstOffset =
      radv_sanitize_image_offset(dest_image->type, region->dstOffset);

   for (uint32_t layer = 0; layer < region->srcSubresource.layerCount; ++layer) {

      struct radv_image_view src_iview;
      radv_image_view_init(&src_iview, cmd_buffer->device,
                           &(VkImageViewCreateInfo){
                              .sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
                              .image = radv_image_to_handle(src_image),
                              .viewType = radv_meta_get_view_type(src_image),
                              .format = src_format,
                              .subresourceRange =
                                 {
                                    .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
                                    .baseMipLevel = region->srcSubresource.mipLevel,
                                    .levelCount = 1,
                                    .baseArrayLayer = src_base_layer + layer,
                                    .layerCount = 1,
                                 },
                           },
                           NULL);

      struct radv_image_view dest_iview;
      radv_image_view_init(&dest_iview, cmd_buffer->device,
                           &(VkImageViewCreateInfo){
                              .sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
                              .image = radv_image_to_handle(dest_image),
                              .viewType = radv_meta_get_view_type(dest_image),
                              .format = vk_to_non_srgb_format(dest_format),
                              .subresourceRange =
                                 {
                                    .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
                                    .baseMipLevel = region->dstSubresource.mipLevel,
                                    .levelCount = 1,
                                    .baseArrayLayer = dest_base_layer + layer,
                                    .layerCount = 1,
                                 },
                           },
                           NULL);

      emit_resolve(cmd_buffer, &src_iview, &dest_iview, &(VkOffset2D){srcOffset.x, srcOffset.y},
                   &(VkOffset2D){dstOffset.x, dstOffset.y},
                   &(VkExtent2D){extent.width, extent.height});
   }

   radv_meta_restore(&saved_state, cmd_buffer);

   if (!radv_image_use_dcc_image_stores(cmd_buffer->device, dest_image) &&
       radv_dcc_enabled(dest_image, region->dstSubresource.mipLevel) &&
       radv_layout_dcc_compressed(cmd_buffer->device, dest_image, dest_image_layout, false,
                                  queue_mask)) {

      cmd_buffer->state.flush_bits |= RADV_CMD_FLAG_CS_PARTIAL_FLUSH | RADV_CMD_FLAG_INV_VCACHE;

      VkImageSubresourceRange range = {
         .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
         .baseMipLevel = region->dstSubresource.mipLevel,
         .levelCount = 1,
         .baseArrayLayer = dest_base_layer,
         .layerCount = region->dstSubresource.layerCount,
      };

      cmd_buffer->state.flush_bits |= radv_init_dcc(cmd_buffer, dest_image, &range, 0xffffffff);
   }
}

/**
 * Emit any needed resolves for the current subpass.
 */
void
radv_cmd_buffer_resolve_subpass_cs(struct radv_cmd_buffer *cmd_buffer)
{
   struct radv_framebuffer *fb = cmd_buffer->state.framebuffer;
   const struct radv_subpass *subpass = cmd_buffer->state.subpass;
   struct radv_subpass_barrier barrier;
   uint32_t layer_count = fb->layers;

   if (subpass->view_mask)
      layer_count = util_last_bit(subpass->view_mask);

   /* Resolves happen before the end-of-subpass barriers get executed, so
    * we have to make the attachment shader-readable.
    */
   barrier.src_stage_mask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
   barrier.src_access_mask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
   barrier.dst_access_mask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_SHADER_WRITE_BIT;
   radv_subpass_barrier(cmd_buffer, &barrier);

   for (uint32_t i = 0; i < subpass->color_count; ++i) {
      struct radv_subpass_attachment src_att = subpass->color_attachments[i];
      struct radv_subpass_attachment dst_att = subpass->resolve_attachments[i];

      if (dst_att.attachment == VK_ATTACHMENT_UNUSED)
         continue;

      struct radv_image_view *src_iview = cmd_buffer->state.attachments[src_att.attachment].iview;
      struct radv_image_view *dst_iview = cmd_buffer->state.attachments[dst_att.attachment].iview;

      VkImageResolve2KHR region = {
         .sType = VK_STRUCTURE_TYPE_IMAGE_RESOLVE_2_KHR,
         .extent = (VkExtent3D){fb->width, fb->height, 1},
         .srcSubresource =
            (VkImageSubresourceLayers){
               .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
               .mipLevel = src_iview->base_mip,
               .baseArrayLayer = src_iview->base_layer,
               .layerCount = layer_count,
            },
         .dstSubresource =
            (VkImageSubresourceLayers){
               .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
               .mipLevel = dst_iview->base_mip,
               .baseArrayLayer = dst_iview->base_layer,
               .layerCount = layer_count,
            },
         .srcOffset = (VkOffset3D){0, 0, 0},
         .dstOffset = (VkOffset3D){0, 0, 0},
      };

      radv_meta_resolve_compute_image(cmd_buffer, src_iview->image, src_iview->vk_format,
                                      src_att.layout, dst_iview->image, dst_iview->vk_format,
                                      dst_att.layout, &region);
   }

   cmd_buffer->state.flush_bits |=
      RADV_CMD_FLAG_CS_PARTIAL_FLUSH | RADV_CMD_FLAG_INV_VCACHE |
      radv_src_access_flush(cmd_buffer, VK_ACCESS_SHADER_WRITE_BIT, NULL);
}

void
radv_depth_stencil_resolve_subpass_cs(struct radv_cmd_buffer *cmd_buffer,
                                      VkImageAspectFlags aspects,
                                      VkResolveModeFlagBits resolve_mode)
{
   struct radv_framebuffer *fb = cmd_buffer->state.framebuffer;
   const struct radv_subpass *subpass = cmd_buffer->state.subpass;
   struct radv_meta_saved_state saved_state;
   uint32_t layer_count = fb->layers;

   if (subpass->view_mask)
      layer_count = util_last_bit(subpass->view_mask);

   /* Resolves happen before the end-of-subpass barriers get executed, so
    * we have to make the attachment shader-readable.
    */
   cmd_buffer->state.flush_bits |=
      radv_src_access_flush(cmd_buffer, VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT, NULL) |
      radv_dst_access_flush(cmd_buffer, VK_ACCESS_SHADER_READ_BIT, NULL) |
      radv_dst_access_flush(cmd_buffer, VK_ACCESS_SHADER_WRITE_BIT, NULL);

   struct radv_subpass_attachment src_att = *subpass->depth_stencil_attachment;
   struct radv_image_view *src_iview = cmd_buffer->state.attachments[src_att.attachment].iview;
   struct radv_image *src_image = src_iview->image;

   VkImageResolve2KHR region = {0};
   region.sType = VK_STRUCTURE_TYPE_IMAGE_RESOLVE_2_KHR;
   region.srcSubresource.aspectMask = aspects;
   region.srcSubresource.mipLevel = 0;
   region.srcSubresource.baseArrayLayer = src_iview->base_layer;
   region.srcSubresource.layerCount = layer_count;

   radv_decompress_resolve_src(cmd_buffer, src_image, src_att.layout, &region);

   radv_meta_save(&saved_state, cmd_buffer,
                  RADV_META_SAVE_COMPUTE_PIPELINE | RADV_META_SAVE_DESCRIPTORS);

   struct radv_subpass_attachment dest_att = *subpass->ds_resolve_attachment;
   struct radv_image_view *dst_iview = cmd_buffer->state.attachments[dest_att.attachment].iview;
   struct radv_image *dst_image = dst_iview->image;

   struct radv_image_view tsrc_iview;
   radv_image_view_init(&tsrc_iview, cmd_buffer->device,
                        &(VkImageViewCreateInfo){
                           .sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
                           .image = radv_image_to_handle(src_image),
                           .viewType = radv_meta_get_view_type(src_image),
                           .format = src_iview->vk_format,
                           .subresourceRange =
                              {
                                 .aspectMask = aspects,
                                 .baseMipLevel = src_iview->base_mip,
                                 .levelCount = 1,
                                 .baseArrayLayer = src_iview->base_layer,
                                 .layerCount = layer_count,
                              },
                        },
                        NULL);

   struct radv_image_view tdst_iview;
   radv_image_view_init(&tdst_iview, cmd_buffer->device,
                        &(VkImageViewCreateInfo){
                           .sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
                           .image = radv_image_to_handle(dst_image),
                           .viewType = radv_meta_get_view_type(dst_image),
                           .format = dst_iview->vk_format,
                           .subresourceRange =
                              {
                                 .aspectMask = aspects,
                                 .baseMipLevel = dst_iview->base_mip,
                                 .levelCount = 1,
                                 .baseArrayLayer = dst_iview->base_layer,
                                 .layerCount = layer_count,
                              },
                        },
                        NULL);

   emit_depth_stencil_resolve(cmd_buffer, &tsrc_iview, &tdst_iview,
                              &(VkExtent3D){fb->width, fb->height, layer_count}, aspects,
                              resolve_mode);

   cmd_buffer->state.flush_bits |=
      RADV_CMD_FLAG_CS_PARTIAL_FLUSH | RADV_CMD_FLAG_INV_VCACHE |
      radv_src_access_flush(cmd_buffer, VK_ACCESS_SHADER_WRITE_BIT, NULL);

   VkImageLayout layout = cmd_buffer->state.attachments[dest_att.attachment].current_layout;
   uint32_t queue_mask = radv_image_queue_family_mask(dst_image, cmd_buffer->queue_family_index,
                                                      cmd_buffer->queue_family_index);

   if (radv_layout_is_htile_compressed(cmd_buffer->device, dst_image, layout, false, queue_mask)) {
      VkImageSubresourceRange range = {0};
      range.aspectMask = aspects;
      range.baseMipLevel = dst_iview->base_mip;
      range.levelCount = 1;
      range.baseArrayLayer = dst_iview->base_layer;
      range.layerCount = layer_count;

      uint32_t htile_value = radv_get_htile_initial_value(cmd_buffer->device, dst_image);

      cmd_buffer->state.flush_bits |= radv_clear_htile(cmd_buffer, dst_image, &range, htile_value);
   }

   radv_meta_restore(&saved_state, cmd_buffer);
}
