src/amd/vulkan/radv_meta_resolve_fs.c - platform/external/mesa3d - Git at Google

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

 static nir_shader *
 build_nir_vertex_shader(void)
 {
 	const struct glsl_type *vec4 = glsl_vec4_type();
 	nir_builder b;

 	nir_builder_init_simple_shader(&b, NULL, MESA_SHADER_VERTEX, NULL);
 	b.shader->info.name = ralloc_strdup(b.shader, "meta_resolve_vs");

 	nir_variable *pos_out = nir_variable_create(b.shader, nir_var_shader_out,
 						    vec4, "gl_Position");
 	pos_out->data.location = VARYING_SLOT_POS;

 	nir_ssa_def *outvec = radv_meta_gen_rect_vertices(&b);

 	nir_store_var(&b, pos_out, outvec, 0xf);
 	return b.shader;
 }

 static nir_shader *
 build_resolve_fragment_shader(struct radv_device *dev, bool is_integer, int samples)
 {
 	nir_builder b;
 	char name[64];
 	const struct glsl_type *vec2 = glsl_vector_type(GLSL_TYPE_FLOAT, 2);
 	const struct glsl_type *vec4 = glsl_vec4_type();
 	const struct glsl_type *sampler_type = glsl_sampler_type(GLSL_SAMPLER_DIM_MS,
 								 false,
 								 false,
 								 GLSL_TYPE_FLOAT);

 	snprintf(name, 64, "meta_resolve_fs-%d-%s", samples, is_integer ? "int" : "float");
 	nir_builder_init_simple_shader(&b, NULL, MESA_SHADER_FRAGMENT, NULL);
 	b.shader->info.name = ralloc_strdup(b.shader, name);

 	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 *fs_pos_in = nir_variable_create(b.shader, nir_var_shader_in, vec2, "fs_pos_in");
 	fs_pos_in->data.location = VARYING_SLOT_POS;

 	nir_variable *color_out = nir_variable_create(b.shader, nir_var_shader_out,
 						      vec4, "f_color");
 	color_out->data.location = FRAG_RESULT_DATA0;

 	nir_ssa_def *pos_in = nir_load_var(&b, fs_pos_in);
 	nir_intrinsic_instr *src_offset = nir_intrinsic_instr_create(b.shader, nir_intrinsic_load_push_constant);
 	nir_intrinsic_set_base(src_offset, 0);
 	nir_intrinsic_set_range(src_offset, 8);
 	src_offset->src[0] = nir_src_for_ssa(nir_imm_int(&b, 0));
 	src_offset->num_components = 2;
 	nir_ssa_dest_init(&src_offset->instr, &src_offset->dest, 2, 32, "src_offset");
 	nir_builder_instr_insert(&b, &src_offset->instr);

 	nir_ssa_def *pos_int = nir_f2i32(&b, pos_in);

 	nir_ssa_def *img_coord = nir_channels(&b, nir_iadd(&b, pos_int, &src_offset->dest.ssa), 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);
 	nir_store_var(&b, color_out, outval, 0xf);
 	return b.shader;
 }


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

 	result = radv_CreateDescriptorSetLayout(radv_device_to_handle(device),
 						&ds_create_info,
 						&device->meta_state.alloc,
 						&device->meta_state.resolve_fragment.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_fragment.ds_layout,
 		.pushConstantRangeCount = 1,
 		.pPushConstantRanges = &(VkPushConstantRange){VK_SHADER_STAGE_FRAGMENT_BIT, 0, 8},
 	};

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

 static const VkPipelineVertexInputStateCreateInfo normal_vi_create_info = {
 	.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
 	.vertexBindingDescriptionCount = 0,
 	.vertexAttributeDescriptionCount = 0,
 };

 static VkResult
 create_resolve_pipeline(struct radv_device *device,
 			int samples_log2,
 			VkFormat format)
 {
 	mtx_lock(&device->meta_state.mtx);

 	unsigned fs_key = radv_format_meta_fs_key(format);
 	VkPipeline *pipeline = &device->meta_state.resolve_fragment.rc[samples_log2].pipeline[fs_key];
 	if (*pipeline) {
 		mtx_unlock(&device->meta_state.mtx);
 		return VK_SUCCESS;
 	}

 	VkResult result;
 	bool is_integer = false;
 	uint32_t samples = 1 << samples_log2;
 	const VkPipelineVertexInputStateCreateInfo *vi_create_info;
 	vi_create_info = &normal_vi_create_info;
 	if (vk_format_is_int(format))
 		is_integer = true;

 	struct radv_shader_module fs = { .nir = NULL };
 	fs.nir = build_resolve_fragment_shader(device, is_integer, samples);
 	struct radv_shader_module vs = {
 		.nir = build_nir_vertex_shader(),
 	};

 	VkRenderPass *rp = &device->meta_state.resolve_fragment.rc[samples_log2].render_pass[fs_key][0];

 	assert(!*rp);

 	VkPipelineShaderStageCreateInfo pipeline_shader_stages[] = {
 		{
 			.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
 			.stage = VK_SHADER_STAGE_VERTEX_BIT,
 			.module = radv_shader_module_to_handle(&vs),
 			.pName = "main",
 			.pSpecializationInfo = NULL
 		}, {
 			.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
 			.stage = VK_SHADER_STAGE_FRAGMENT_BIT,
 			.module = radv_shader_module_to_handle(&fs),
 			.pName = "main",
 			.pSpecializationInfo = NULL
 		},
 	};


 	for (unsigned dst_layout = 0; dst_layout < RADV_META_DST_LAYOUT_COUNT; ++dst_layout) {
 		VkImageLayout layout = radv_meta_dst_layout_to_layout(dst_layout);
 		result = radv_CreateRenderPass(radv_device_to_handle(device),
 					&(VkRenderPassCreateInfo) {
 						.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO,
 						.attachmentCount = 1,
 						.pAttachments = &(VkAttachmentDescription) {
 							.format = format,
 							.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD,
 							.storeOp = VK_ATTACHMENT_STORE_OP_STORE,
 							.initialLayout = layout,
 							.finalLayout = layout,
 						},
 						.subpassCount = 1,
 						.pSubpasses = &(VkSubpassDescription) {
 							.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS,
 							.inputAttachmentCount = 0,
 							.colorAttachmentCount = 1,
 							.pColorAttachments = &(VkAttachmentReference) {
 								.attachment = 0,
 								.layout = layout,
 							},
 						.pResolveAttachments = NULL,
 						.pDepthStencilAttachment = &(VkAttachmentReference) {
 							.attachment = VK_ATTACHMENT_UNUSED,
 							.layout = VK_IMAGE_LAYOUT_GENERAL,
 						},
 						.preserveAttachmentCount = 0,
 						.pPreserveAttachments = NULL,
 					},
 					.dependencyCount = 0,
 				}, &device->meta_state.alloc, rp + dst_layout);
 	}


 	const VkGraphicsPipelineCreateInfo vk_pipeline_info = {
 		.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
 		.stageCount = ARRAY_SIZE(pipeline_shader_stages),
 		.pStages = pipeline_shader_stages,
 		.pVertexInputState = vi_create_info,
 		.pInputAssemblyState = &(VkPipelineInputAssemblyStateCreateInfo) {
 			.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
 			.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP,
 			.primitiveRestartEnable = false,
 		},
 		.pViewportState = &(VkPipelineViewportStateCreateInfo) {
 			.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
 			.viewportCount = 1,
 			.scissorCount = 1,
 		},
 		.pRasterizationState = &(VkPipelineRasterizationStateCreateInfo) {
 			.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
 			.rasterizerDiscardEnable = false,
 			.polygonMode = VK_POLYGON_MODE_FILL,
 			.cullMode = VK_CULL_MODE_NONE,
 			.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE
 		},
 		.pMultisampleState = &(VkPipelineMultisampleStateCreateInfo) {
 			.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
 			.rasterizationSamples = 1,
 			.sampleShadingEnable = false,
 			.pSampleMask = (VkSampleMask[]) { UINT32_MAX },
 		},
 		.pColorBlendState = &(VkPipelineColorBlendStateCreateInfo) {
 			.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
 			.attachmentCount = 1,
 			.pAttachments = (VkPipelineColorBlendAttachmentState []) {
 				{ .colorWriteMask =
 				  VK_COLOR_COMPONENT_A_BIT |
 				  VK_COLOR_COMPONENT_R_BIT |
 				  VK_COLOR_COMPONENT_G_BIT |
 				  VK_COLOR_COMPONENT_B_BIT },
 			}
 		},
 		.pDynamicState = &(VkPipelineDynamicStateCreateInfo) {
 			.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO,
 			.dynamicStateCount = 9,
 			.pDynamicStates = (VkDynamicState[]) {
 				VK_DYNAMIC_STATE_VIEWPORT,
 				VK_DYNAMIC_STATE_SCISSOR,
 				VK_DYNAMIC_STATE_LINE_WIDTH,
 				VK_DYNAMIC_STATE_DEPTH_BIAS,
 				VK_DYNAMIC_STATE_BLEND_CONSTANTS,
 				VK_DYNAMIC_STATE_DEPTH_BOUNDS,
 				VK_DYNAMIC_STATE_STENCIL_COMPARE_MASK,
 				VK_DYNAMIC_STATE_STENCIL_WRITE_MASK,
 				VK_DYNAMIC_STATE_STENCIL_REFERENCE,
 			},
 		},
 		.flags = 0,
 		.layout = device->meta_state.resolve_fragment.p_layout,
 		.renderPass = *rp,
 		.subpass = 0,
 	};

 	const struct radv_graphics_pipeline_create_info radv_pipeline_info = {
 		.use_rectlist = true
 	};

 	result = radv_graphics_pipeline_create(radv_device_to_handle(device),
 					       radv_pipeline_cache_to_handle(&device->meta_state.cache),
 					       &vk_pipeline_info, &radv_pipeline_info,
 					       &device->meta_state.alloc,
 					       pipeline);
 	ralloc_free(vs.nir);
 	ralloc_free(fs.nir);

 	mtx_unlock(&device->meta_state.mtx);
 	return result;
 }

 VkResult
 radv_device_init_meta_resolve_fragment_state(struct radv_device *device, bool on_demand)
 {
 	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) {
 		for (unsigned j = 0; j < NUM_META_FS_KEYS; ++j) {
 			res = create_resolve_pipeline(device, i, radv_fs_key_format_exemplars[j]);
 			if (res != VK_SUCCESS)
 				goto fail;
 		}
 	}

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

 void
 radv_device_finish_meta_resolve_fragment_state(struct radv_device *device)
 {
 	struct radv_meta_state *state = &device->meta_state;
 	for (uint32_t i = 0; i < MAX_SAMPLES_LOG2; ++i) {
 		for (unsigned j = 0; j < NUM_META_FS_KEYS; ++j) {
 			for(unsigned k =0; k < RADV_META_DST_LAYOUT_COUNT; ++k) {
 				radv_DestroyRenderPass(radv_device_to_handle(device),
 				                       state->resolve_fragment.rc[i].render_pass[j][k],
 				                       &state->alloc);
 			}
 			radv_DestroyPipeline(radv_device_to_handle(device),
 					     state->resolve_fragment.rc[i].pipeline[j],
 					     &state->alloc);
 		}
 	}

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

 static VkPipeline *
 radv_get_resolve_pipeline(struct radv_cmd_buffer *cmd_buffer,
 			  struct radv_image_view *src_iview,
 			  struct radv_image_view *dst_iview)
 {
 	struct radv_device *device = cmd_buffer->device;
 	unsigned fs_key = radv_format_meta_fs_key(dst_iview->vk_format);
 	const uint32_t samples = src_iview->image->info.samples;
 	const uint32_t samples_log2 = ffs(samples) - 1;
 	VkPipeline *pipeline;

 	pipeline = &device->meta_state.resolve_fragment.rc[samples_log2].pipeline[fs_key];
 	if (!*pipeline ) {
 		VkResult ret;

 		ret = create_resolve_pipeline(device, samples_log2,
 					      radv_fs_key_format_exemplars[fs_key]);
 		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;
 	VkCommandBuffer cmd_buffer_h = radv_cmd_buffer_to_handle(cmd_buffer);
 	VkPipeline *pipeline;

 	radv_meta_push_descriptor_set(cmd_buffer,
 				      VK_PIPELINE_BIND_POINT_GRAPHICS,
 				      cmd_buffer->device->meta_state.resolve_fragment.p_layout,
 				      0, /* set */
 				      1, /* 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,
 						      },
 						      }
 					      },
 				      });

 	cmd_buffer->state.flush_bits |= RADV_CMD_FLAG_FLUSH_AND_INV_CB;

 	unsigned push_constants[2] = {
 		src_offset->x - dest_offset->x,
 		src_offset->y - dest_offset->y,
 	};
 	radv_CmdPushConstants(radv_cmd_buffer_to_handle(cmd_buffer),
 			      device->meta_state.resolve_fragment.p_layout,
 			      VK_SHADER_STAGE_FRAGMENT_BIT, 0, 8,
 			      push_constants);

 	pipeline = radv_get_resolve_pipeline(cmd_buffer, src_iview, dest_iview);

 	radv_CmdBindPipeline(cmd_buffer_h, VK_PIPELINE_BIND_POINT_GRAPHICS,
 			     *pipeline);

 	radv_CmdSetViewport(radv_cmd_buffer_to_handle(cmd_buffer), 0, 1, &(VkViewport) {
 		.x = dest_offset->x,
 		.y = dest_offset->y,
 		.width = resolve_extent->width,
 		.height = resolve_extent->height,
 		.minDepth = 0.0f,
 		.maxDepth = 1.0f
 	});

 	radv_CmdSetScissor(radv_cmd_buffer_to_handle(cmd_buffer), 0, 1, &(VkRect2D) {
 		.offset = *dest_offset,
 		.extent = *resolve_extent,
 	});

 	radv_CmdDraw(cmd_buffer_h, 3, 1, 0, 0);
 	cmd_buffer->state.flush_bits |= RADV_CMD_FLAG_FLUSH_AND_INV_CB;
 }

 void radv_meta_resolve_fragment_image(struct radv_cmd_buffer *cmd_buffer,
 				      struct radv_image *src_image,
 				      VkImageLayout src_image_layout,
 				      struct radv_image *dest_image,
 				      VkImageLayout dest_image_layout,
 				      uint32_t region_count,
 				      const VkImageResolve *regions)
 {
 	struct radv_device *device = cmd_buffer->device;
 	struct radv_meta_saved_state saved_state;
 	const uint32_t samples = src_image->info.samples;
 	const uint32_t samples_log2 = ffs(samples) - 1;
 	unsigned fs_key = radv_format_meta_fs_key(dest_image->vk_format);
 	unsigned dst_layout = radv_meta_dst_layout_from_layout(dest_image_layout);
 	VkRenderPass rp;

 	radv_decompress_resolve_src(cmd_buffer, src_image, src_image_layout,
 				    region_count, regions);

 	if (!device->meta_state.resolve_fragment.rc[samples_log2].render_pass[fs_key][dst_layout]) {
 		VkResult ret = create_resolve_pipeline(device, samples_log2, radv_fs_key_format_exemplars[fs_key]);
 		if (ret != VK_SUCCESS) {
 			cmd_buffer->record_result = ret;
 			return;
 		}
 	}

 	rp = device->meta_state.resolve_fragment.rc[samples_log2].render_pass[fs_key][dst_layout];

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

 	for (uint32_t r = 0; r < region_count; ++r) {
 		const VkImageResolve *region = &regions[r];

 		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_image->vk_format,
 							     .subresourceRange = {
 							     .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
 							     .baseMipLevel = region->srcSubresource.mipLevel,
 							     .levelCount = 1,
 							     .baseArrayLayer = src_base_layer + layer,
 							     .layerCount = 1,
 						     },
 					     });

 			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 = dest_image->vk_format,
 							     .subresourceRange = {
 							     .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
 							     .baseMipLevel = region->dstSubresource.mipLevel,
 							     .levelCount = 1,
 							     .baseArrayLayer = dest_base_layer + layer,
 							     .layerCount = 1,
 						     },
 					     });


 			VkFramebuffer fb;
 			radv_CreateFramebuffer(radv_device_to_handle(cmd_buffer->device),
 			       &(VkFramebufferCreateInfo) {
 				       .sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO,
 					       .attachmentCount = 1,
 					       .pAttachments = (VkImageView[]) {
 					       radv_image_view_to_handle(&dest_iview),
 				       },
 				       .width = extent.width + dstOffset.x,
 				       .height = extent.height + dstOffset.y,
 				       .layers = 1
 				}, &cmd_buffer->pool->alloc, &fb);

 			radv_CmdBeginRenderPass(radv_cmd_buffer_to_handle(cmd_buffer),
 						&(VkRenderPassBeginInfo) {
 							.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO,
 								.renderPass = rp,
 								.framebuffer = fb,
 								.renderArea = {
 								.offset = { dstOffset.x, dstOffset.y, },
 								.extent = { extent.width, extent.height },
 							},
 								.clearValueCount = 0,
 								.pClearValues = NULL,
 						}, VK_SUBPASS_CONTENTS_INLINE);


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

 			radv_CmdEndRenderPass(radv_cmd_buffer_to_handle(cmd_buffer));

 			radv_DestroyFramebuffer(radv_device_to_handle(cmd_buffer->device), fb, &cmd_buffer->pool->alloc);
 		}
 	}

 	radv_meta_restore(&saved_state, cmd_buffer);
 }


 /**
  * Emit any needed resolves for the current subpass.
  */
 void
 radv_cmd_buffer_resolve_subpass_fs(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_meta_saved_state saved_state;
 	struct radv_subpass_barrier barrier;

 	/* 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_INPUT_ATTACHMENT_READ_BIT;
 	radv_subpass_barrier(cmd_buffer, &barrier);

 	radv_decompress_resolve_subpass_src(cmd_buffer);

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

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

 		if (dest_att.attachment == VK_ATTACHMENT_UNUSED)
 			continue;

 		struct radv_image_view *dest_iview = cmd_buffer->state.framebuffer->attachments[dest_att.attachment].attachment;
 		struct radv_image_view *src_iview = cmd_buffer->state.framebuffer->attachments[src_att.attachment].attachment;

 		struct radv_subpass resolve_subpass = {
 			.color_count = 1,
 			.color_attachments = (struct radv_subpass_attachment[]) { dest_att },
 			.depth_stencil_attachment = NULL,
 		};

 		radv_cmd_buffer_set_subpass(cmd_buffer, &resolve_subpass);

 		emit_resolve(cmd_buffer,
 			     src_iview,
 			     dest_iview,
 			     &(VkOffset2D) { 0, 0 },
 			     &(VkOffset2D) { 0, 0 },
 			     &(VkExtent2D) { fb->width, fb->height });
 	}

 	radv_cmd_buffer_set_subpass(cmd_buffer, subpass);

 	radv_meta_restore(&saved_state, cmd_buffer);
 }
	/*
	* 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 "radv_meta.h"
	#include "radv_private.h"
	#include "nir/nir_builder.h"
	#include "sid.h"
	#include "vk_format.h"

	static nir_shader *
	build_nir_vertex_shader(void)
	{
	const struct glsl_type *vec4 = glsl_vec4_type();
	nir_builder b;

	nir_builder_init_simple_shader(&b, NULL, MESA_SHADER_VERTEX, NULL);
	b.shader->info.name = ralloc_strdup(b.shader, "meta_resolve_vs");

	nir_variable *pos_out = nir_variable_create(b.shader, nir_var_shader_out,
	vec4, "gl_Position");
	pos_out->data.location = VARYING_SLOT_POS;

	nir_ssa_def *outvec = radv_meta_gen_rect_vertices(&b);

	nir_store_var(&b, pos_out, outvec, 0xf);
	return b.shader;
	}

	static nir_shader *
	build_resolve_fragment_shader(struct radv_device *dev, bool is_integer, int samples)
	{
	nir_builder b;
	char name[64];
	const struct glsl_type *vec2 = glsl_vector_type(GLSL_TYPE_FLOAT, 2);
	const struct glsl_type *vec4 = glsl_vec4_type();
	const struct glsl_type *sampler_type = glsl_sampler_type(GLSL_SAMPLER_DIM_MS,
	false,
	false,
	GLSL_TYPE_FLOAT);

	snprintf(name, 64, "meta_resolve_fs-%d-%s", samples, is_integer ? "int" : "float");
	nir_builder_init_simple_shader(&b, NULL, MESA_SHADER_FRAGMENT, NULL);
	b.shader->info.name = ralloc_strdup(b.shader, name);

	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 *fs_pos_in = nir_variable_create(b.shader, nir_var_shader_in, vec2, "fs_pos_in");
	fs_pos_in->data.location = VARYING_SLOT_POS;

	nir_variable *color_out = nir_variable_create(b.shader, nir_var_shader_out,
	vec4, "f_color");
	color_out->data.location = FRAG_RESULT_DATA0;

	nir_ssa_def *pos_in = nir_load_var(&b, fs_pos_in);
	nir_intrinsic_instr *src_offset = nir_intrinsic_instr_create(b.shader, nir_intrinsic_load_push_constant);
	nir_intrinsic_set_base(src_offset, 0);
	nir_intrinsic_set_range(src_offset, 8);
	src_offset->src[0] = nir_src_for_ssa(nir_imm_int(&b, 0));
	src_offset->num_components = 2;
	nir_ssa_dest_init(&src_offset->instr, &src_offset->dest, 2, 32, "src_offset");
	nir_builder_instr_insert(&b, &src_offset->instr);

	nir_ssa_def *pos_int = nir_f2i32(&b, pos_in);

	nir_ssa_def *img_coord = nir_channels(&b, nir_iadd(&b, pos_int, &src_offset->dest.ssa), 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);
	nir_store_var(&b, color_out, outval, 0xf);
	return b.shader;
	}


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

	result = radv_CreateDescriptorSetLayout(radv_device_to_handle(device),
	&ds_create_info,
	&device->meta_state.alloc,
	&device->meta_state.resolve_fragment.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_fragment.ds_layout,
	.pushConstantRangeCount = 1,
	.pPushConstantRanges = &(VkPushConstantRange){VK_SHADER_STAGE_FRAGMENT_BIT, 0, 8},
	};

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

	static const VkPipelineVertexInputStateCreateInfo normal_vi_create_info = {
	.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
	.vertexBindingDescriptionCount = 0,
	.vertexAttributeDescriptionCount = 0,
	};

	static VkResult
	create_resolve_pipeline(struct radv_device *device,
	int samples_log2,
	VkFormat format)
	{
	mtx_lock(&device->meta_state.mtx);

	unsigned fs_key = radv_format_meta_fs_key(format);
	VkPipeline *pipeline = &device->meta_state.resolve_fragment.rc[samples_log2].pipeline[fs_key];
	if (*pipeline) {
	mtx_unlock(&device->meta_state.mtx);
	return VK_SUCCESS;
	}

	VkResult result;
	bool is_integer = false;
	uint32_t samples = 1 << samples_log2;
	const VkPipelineVertexInputStateCreateInfo *vi_create_info;
	vi_create_info = &normal_vi_create_info;
	if (vk_format_is_int(format))
	is_integer = true;

	struct radv_shader_module fs = { .nir = NULL };
	fs.nir = build_resolve_fragment_shader(device, is_integer, samples);
	struct radv_shader_module vs = {
	.nir = build_nir_vertex_shader(),
	};

	VkRenderPass *rp = &device->meta_state.resolve_fragment.rc[samples_log2].render_pass[fs_key][0];

	assert(!*rp);

	VkPipelineShaderStageCreateInfo pipeline_shader_stages[] = {
	{
	.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
	.stage = VK_SHADER_STAGE_VERTEX_BIT,
	.module = radv_shader_module_to_handle(&vs),
	.pName = "main",
	.pSpecializationInfo = NULL
	}, {
	.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
	.stage = VK_SHADER_STAGE_FRAGMENT_BIT,
	.module = radv_shader_module_to_handle(&fs),
	.pName = "main",
	.pSpecializationInfo = NULL
	},
	};


	for (unsigned dst_layout = 0; dst_layout < RADV_META_DST_LAYOUT_COUNT; ++dst_layout) {
	VkImageLayout layout = radv_meta_dst_layout_to_layout(dst_layout);
	result = radv_CreateRenderPass(radv_device_to_handle(device),
	&(VkRenderPassCreateInfo) {
	.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO,
	.attachmentCount = 1,
	.pAttachments = &(VkAttachmentDescription) {
	.format = format,
	.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD,
	.storeOp = VK_ATTACHMENT_STORE_OP_STORE,
	.initialLayout = layout,
	.finalLayout = layout,
	},
	.subpassCount = 1,
	.pSubpasses = &(VkSubpassDescription) {
	.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS,
	.inputAttachmentCount = 0,
	.colorAttachmentCount = 1,
	.pColorAttachments = &(VkAttachmentReference) {
	.attachment = 0,
	.layout = layout,
	},
	.pResolveAttachments = NULL,
	.pDepthStencilAttachment = &(VkAttachmentReference) {
	.attachment = VK_ATTACHMENT_UNUSED,
	.layout = VK_IMAGE_LAYOUT_GENERAL,
	},
	.preserveAttachmentCount = 0,
	.pPreserveAttachments = NULL,
	},
	.dependencyCount = 0,
	}, &device->meta_state.alloc, rp + dst_layout);
	}


	const VkGraphicsPipelineCreateInfo vk_pipeline_info = {
	.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
	.stageCount = ARRAY_SIZE(pipeline_shader_stages),
	.pStages = pipeline_shader_stages,
	.pVertexInputState = vi_create_info,
	.pInputAssemblyState = &(VkPipelineInputAssemblyStateCreateInfo) {
	.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
	.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP,
	.primitiveRestartEnable = false,
	},
	.pViewportState = &(VkPipelineViewportStateCreateInfo) {
	.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
	.viewportCount = 1,
	.scissorCount = 1,
	},
	.pRasterizationState = &(VkPipelineRasterizationStateCreateInfo) {
	.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
	.rasterizerDiscardEnable = false,
	.polygonMode = VK_POLYGON_MODE_FILL,
	.cullMode = VK_CULL_MODE_NONE,
	.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE
	},
	.pMultisampleState = &(VkPipelineMultisampleStateCreateInfo) {
	.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
	.rasterizationSamples = 1,
	.sampleShadingEnable = false,
	.pSampleMask = (VkSampleMask[]) { UINT32_MAX },
	},
	.pColorBlendState = &(VkPipelineColorBlendStateCreateInfo) {
	.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
	.attachmentCount = 1,
	.pAttachments = (VkPipelineColorBlendAttachmentState []) {
	{ .colorWriteMask =
	VK_COLOR_COMPONENT_A_BIT \|
	VK_COLOR_COMPONENT_R_BIT \|
	VK_COLOR_COMPONENT_G_BIT \|
	VK_COLOR_COMPONENT_B_BIT },
	}
	},
	.pDynamicState = &(VkPipelineDynamicStateCreateInfo) {
	.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO,
	.dynamicStateCount = 9,
	.pDynamicStates = (VkDynamicState[]) {
	VK_DYNAMIC_STATE_VIEWPORT,
	VK_DYNAMIC_STATE_SCISSOR,
	VK_DYNAMIC_STATE_LINE_WIDTH,
	VK_DYNAMIC_STATE_DEPTH_BIAS,
	VK_DYNAMIC_STATE_BLEND_CONSTANTS,
	VK_DYNAMIC_STATE_DEPTH_BOUNDS,
	VK_DYNAMIC_STATE_STENCIL_COMPARE_MASK,
	VK_DYNAMIC_STATE_STENCIL_WRITE_MASK,
	VK_DYNAMIC_STATE_STENCIL_REFERENCE,
	},
	},
	.flags = 0,
	.layout = device->meta_state.resolve_fragment.p_layout,
	.renderPass = *rp,
	.subpass = 0,
	};

	const struct radv_graphics_pipeline_create_info radv_pipeline_info = {
	.use_rectlist = true
	};

	result = radv_graphics_pipeline_create(radv_device_to_handle(device),
	radv_pipeline_cache_to_handle(&device->meta_state.cache),
	&vk_pipeline_info, &radv_pipeline_info,
	&device->meta_state.alloc,
	pipeline);
	ralloc_free(vs.nir);
	ralloc_free(fs.nir);

	mtx_unlock(&device->meta_state.mtx);
	return result;
	}

	VkResult
	radv_device_init_meta_resolve_fragment_state(struct radv_device *device, bool on_demand)
	{
	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) {
	for (unsigned j = 0; j < NUM_META_FS_KEYS; ++j) {
	res = create_resolve_pipeline(device, i, radv_fs_key_format_exemplars[j]);
	if (res != VK_SUCCESS)
	goto fail;
	}
	}

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

	void
	radv_device_finish_meta_resolve_fragment_state(struct radv_device *device)
	{
	struct radv_meta_state *state = &device->meta_state;
	for (uint32_t i = 0; i < MAX_SAMPLES_LOG2; ++i) {
	for (unsigned j = 0; j < NUM_META_FS_KEYS; ++j) {
	for(unsigned k =0; k < RADV_META_DST_LAYOUT_COUNT; ++k) {
	radv_DestroyRenderPass(radv_device_to_handle(device),
	state->resolve_fragment.rc[i].render_pass[j][k],
	&state->alloc);
	}
	radv_DestroyPipeline(radv_device_to_handle(device),
	state->resolve_fragment.rc[i].pipeline[j],
	&state->alloc);
	}
	}

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

	static VkPipeline *
	radv_get_resolve_pipeline(struct radv_cmd_buffer *cmd_buffer,
	struct radv_image_view *src_iview,
	struct radv_image_view *dst_iview)
	{
	struct radv_device *device = cmd_buffer->device;
	unsigned fs_key = radv_format_meta_fs_key(dst_iview->vk_format);
	const uint32_t samples = src_iview->image->info.samples;
	const uint32_t samples_log2 = ffs(samples) - 1;
	VkPipeline *pipeline;

	pipeline = &device->meta_state.resolve_fragment.rc[samples_log2].pipeline[fs_key];
	if (!*pipeline ) {
	VkResult ret;

	ret = create_resolve_pipeline(device, samples_log2,
	radv_fs_key_format_exemplars[fs_key]);
	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;
	VkCommandBuffer cmd_buffer_h = radv_cmd_buffer_to_handle(cmd_buffer);
	VkPipeline *pipeline;

	radv_meta_push_descriptor_set(cmd_buffer,
	VK_PIPELINE_BIND_POINT_GRAPHICS,
	cmd_buffer->device->meta_state.resolve_fragment.p_layout,
	0, /* set */
	1, /* 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,
	},
	}
	},
	});

	cmd_buffer->state.flush_bits \|= RADV_CMD_FLAG_FLUSH_AND_INV_CB;

	unsigned push_constants[2] = {
	src_offset->x - dest_offset->x,
	src_offset->y - dest_offset->y,
	};
	radv_CmdPushConstants(radv_cmd_buffer_to_handle(cmd_buffer),
	device->meta_state.resolve_fragment.p_layout,
	VK_SHADER_STAGE_FRAGMENT_BIT, 0, 8,
	push_constants);

	pipeline = radv_get_resolve_pipeline(cmd_buffer, src_iview, dest_iview);

	radv_CmdBindPipeline(cmd_buffer_h, VK_PIPELINE_BIND_POINT_GRAPHICS,
	*pipeline);

	radv_CmdSetViewport(radv_cmd_buffer_to_handle(cmd_buffer), 0, 1, &(VkViewport) {
	.x = dest_offset->x,
	.y = dest_offset->y,
	.width = resolve_extent->width,
	.height = resolve_extent->height,
	.minDepth = 0.0f,
	.maxDepth = 1.0f
	});

	radv_CmdSetScissor(radv_cmd_buffer_to_handle(cmd_buffer), 0, 1, &(VkRect2D) {
	.offset = *dest_offset,
	.extent = *resolve_extent,
	});

	radv_CmdDraw(cmd_buffer_h, 3, 1, 0, 0);
	cmd_buffer->state.flush_bits \|= RADV_CMD_FLAG_FLUSH_AND_INV_CB;
	}

	void radv_meta_resolve_fragment_image(struct radv_cmd_buffer *cmd_buffer,
	struct radv_image *src_image,
	VkImageLayout src_image_layout,
	struct radv_image *dest_image,
	VkImageLayout dest_image_layout,
	uint32_t region_count,
	const VkImageResolve *regions)
	{
	struct radv_device *device = cmd_buffer->device;
	struct radv_meta_saved_state saved_state;
	const uint32_t samples = src_image->info.samples;
	const uint32_t samples_log2 = ffs(samples) - 1;
	unsigned fs_key = radv_format_meta_fs_key(dest_image->vk_format);
	unsigned dst_layout = radv_meta_dst_layout_from_layout(dest_image_layout);
	VkRenderPass rp;

	radv_decompress_resolve_src(cmd_buffer, src_image, src_image_layout,
	region_count, regions);

	if (!device->meta_state.resolve_fragment.rc[samples_log2].render_pass[fs_key][dst_layout]) {
	VkResult ret = create_resolve_pipeline(device, samples_log2, radv_fs_key_format_exemplars[fs_key]);
	if (ret != VK_SUCCESS) {
	cmd_buffer->record_result = ret;
	return;
	}
	}

	rp = device->meta_state.resolve_fragment.rc[samples_log2].render_pass[fs_key][dst_layout];

	radv_meta_save(&saved_state, cmd_buffer,
	RADV_META_SAVE_GRAPHICS_PIPELINE \|
	RADV_META_SAVE_CONSTANTS \|
	RADV_META_SAVE_DESCRIPTORS);

	for (uint32_t r = 0; r < region_count; ++r) {
	const VkImageResolve *region = &regions[r];

	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_image->vk_format,
	.subresourceRange = {
	.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
	.baseMipLevel = region->srcSubresource.mipLevel,
	.levelCount = 1,
	.baseArrayLayer = src_base_layer + layer,
	.layerCount = 1,
	},
	});

	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 = dest_image->vk_format,
	.subresourceRange = {
	.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
	.baseMipLevel = region->dstSubresource.mipLevel,
	.levelCount = 1,
	.baseArrayLayer = dest_base_layer + layer,
	.layerCount = 1,
	},
	});


	VkFramebuffer fb;
	radv_CreateFramebuffer(radv_device_to_handle(cmd_buffer->device),
	&(VkFramebufferCreateInfo) {
	.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO,
	.attachmentCount = 1,
	.pAttachments = (VkImageView[]) {
	radv_image_view_to_handle(&dest_iview),
	},
	.width = extent.width + dstOffset.x,
	.height = extent.height + dstOffset.y,
	.layers = 1
	}, &cmd_buffer->pool->alloc, &fb);

	radv_CmdBeginRenderPass(radv_cmd_buffer_to_handle(cmd_buffer),
	&(VkRenderPassBeginInfo) {
	.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO,
	.renderPass = rp,
	.framebuffer = fb,
	.renderArea = {
	.offset = { dstOffset.x, dstOffset.y, },
	.extent = { extent.width, extent.height },
	},
	.clearValueCount = 0,
	.pClearValues = NULL,
	}, VK_SUBPASS_CONTENTS_INLINE);



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

	radv_CmdEndRenderPass(radv_cmd_buffer_to_handle(cmd_buffer));

	radv_DestroyFramebuffer(radv_device_to_handle(cmd_buffer->device), fb, &cmd_buffer->pool->alloc);
	}
	}

	radv_meta_restore(&saved_state, cmd_buffer);
	}


	/**
	* Emit any needed resolves for the current subpass.
	*/
	void
	radv_cmd_buffer_resolve_subpass_fs(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_meta_saved_state saved_state;
	struct radv_subpass_barrier barrier;

	/* 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_INPUT_ATTACHMENT_READ_BIT;
	radv_subpass_barrier(cmd_buffer, &barrier);

	radv_decompress_resolve_subpass_src(cmd_buffer);

	radv_meta_save(&saved_state, cmd_buffer,
	RADV_META_SAVE_GRAPHICS_PIPELINE \|
	RADV_META_SAVE_CONSTANTS \|
	RADV_META_SAVE_DESCRIPTORS);

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

	if (dest_att.attachment == VK_ATTACHMENT_UNUSED)
	continue;

	struct radv_image_view *dest_iview = cmd_buffer->state.framebuffer->attachments[dest_att.attachment].attachment;
	struct radv_image_view *src_iview = cmd_buffer->state.framebuffer->attachments[src_att.attachment].attachment;

	struct radv_subpass resolve_subpass = {
	.color_count = 1,
	.color_attachments = (struct radv_subpass_attachment[]) { dest_att },
	.depth_stencil_attachment = NULL,
	};

	radv_cmd_buffer_set_subpass(cmd_buffer, &resolve_subpass);

	emit_resolve(cmd_buffer,
	src_iview,
	dest_iview,
	&(VkOffset2D) { 0, 0 },
	&(VkOffset2D) { 0, 0 },
	&(VkExtent2D) { fb->width, fb->height });
	}

	radv_cmd_buffer_set_subpass(cmd_buffer, subpass);

	radv_meta_restore(&saved_state, cmd_buffer);
	}