source/backends/vulkan/program_backend.cpp

   1 #include <cstring>
   2 #include <msp/core/algorithm.h>
   3 #include "device.h"
   4 #include "error.h"
   5 #include "program.h"
   6 #include "program_backend.h"
   7 #include "structurebuilder.h"
   8 #include "vulkan.h"
   9
  10 using namespace std;
  11
  12 namespace Msp {
  13 namespace GL {
  14
  15 VulkanProgram::VulkanProgram():
  16         device(Device::get_current())
  17 { }
  18
  19 VulkanProgram::VulkanProgram(VulkanProgram &&other):
  20         device(other.device),
  21         n_stages(other.n_stages),
  22         stage_flags(other.stage_flags),
  23         creation_info(move(other.creation_info)),
  24         desc_set_layout_handles(move(other.desc_set_layout_handles)),
  25         layout_handle(other.layout_handle),
  26         debug_name(move(other.debug_name))
  27 {
  28         other.desc_set_layout_handles.clear();
  29         other.layout_handle = 0;
  30 }
  31
  32 VulkanProgram::~VulkanProgram()
  33 {
  34         const VulkanFunctions &vk = device.get_functions();
  35
  36         if(layout_handle)
  37                 vk.DestroyPipelineLayout(layout_handle);
  38         for(VkDescriptorSetLayout d: desc_set_layout_handles)
  39                 vk.DestroyDescriptorSetLayout(d);
  40 }
  41
  42 bool VulkanProgram::has_stages() const
  43 {
  44         return n_stages;
  45 }
  46
  47 void VulkanProgram::add_glsl_stages(const GlslModule &, const map<string, int> &)
  48 {
  49         throw invalid_operation("VulkanProgram::add_glsl_stages");
  50 }
  51
  52 void VulkanProgram::add_spirv_stages(const SpirVModule &mod, const map<string, int> &spec_values)
  53 {
  54         const vector<SpirVModule::EntryPoint> &entry_points = mod.get_entry_points();
  55
  56         n_stages = entry_points.size();
  57         size_t entry_names_size = 0;
  58         for(const SpirVModule::EntryPoint &e: entry_points)
  59                 entry_names_size += e.name.size()+1;
  60
  61         StructureBuilder sb(creation_info, 5);
  62         VkPipelineShaderStageCreateInfo *&stage_infos = sb.add<VkPipelineShaderStageCreateInfo>(n_stages);
  63         char *&name_table = sb.add<char>(entry_names_size);
  64         VkSpecializationInfo *&spec_info = sb.add<VkSpecializationInfo>();
  65         VkSpecializationMapEntry *&spec_map = sb.add<VkSpecializationMapEntry>(spec_values.size());
  66         int *&spec_data = sb.add<int>(spec_values.size());
  67
  68         unsigned i = 0;
  69         for(const SpirVModule::Constant &c: mod.get_spec_constants())
  70         {
  71                 auto j = spec_values.find(c.name);
  72                 if(j!=spec_values.end())
  73                 {
  74                         spec_map[i].constantID = c.constant_id;
  75                         spec_map[i].offset = i*sizeof(int);
  76                         spec_map[i].size = sizeof(int);
  77                         spec_data[i] = j->second;
  78                         ++i;
  79                 }
  80         }
  81
  82         spec_info->mapEntryCount = i;
  83         spec_info->pMapEntries = spec_map;
  84         spec_info->dataSize = spec_values.size()*sizeof(int);
  85         spec_info->pData = spec_data;
  86
  87         char *name_ptr = name_table;
  88         i = 0;
  89         for(const SpirVModule::EntryPoint &e: entry_points)
  90         {
  91                 unsigned stage_bit = get_vulkan_stage(e.stage);
  92                 stage_flags |= stage_bit;
  93
  94                 stage_infos[i].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
  95                 stage_infos[i].stage = static_cast<VkShaderStageFlagBits>(stage_bit);
  96                 stage_infos[i].module = handle_cast<::VkShaderModule>(mod.handle);
  97                 strcpy(name_ptr, e.name.c_str());
  98                 stage_infos[i].pName = name_ptr;
  99                 name_ptr += e.name.size()+1;
 100                 stage_infos[i].pSpecializationInfo = spec_info;
 101                 ++i;
 102         }
 103
 104 #if DEBUG
 105         if(!debug_name.empty())
 106                 if(SpirVModule *spirv = static_cast<Program *>(this)->specialized_spirv)
 107                         spirv->set_debug_name(debug_name);
 108 #endif
 109 }
 110
 111 void VulkanProgram::finalize_uniforms()
 112 {
 113         const VulkanFunctions &vk = device.get_functions();
 114         const ReflectData &rd = static_cast<const Program *>(this)->reflect_data;
 115
 116         auto i = find_member(rd.uniform_blocks, static_cast<int>(ReflectData::PUSH_CONSTANT), &ReflectData::UniformBlockInfo::bind_point);
 117         const ReflectData::UniformBlockInfo *push_const_block = (i!=rd.uniform_blocks.end() ? &*i : 0);
 118
 119         desc_set_layout_handles.resize(rd.n_descriptor_sets);
 120         for(unsigned j=0; j<rd.n_descriptor_sets; ++j)
 121         {
 122                 std::vector<VkDescriptorSetLayoutBinding> bindings;
 123                 for(const ReflectData::UniformBlockInfo &b: rd.uniform_blocks)
 124                         if(b.bind_point>=0 && static_cast<unsigned>(b.bind_point>>20)==j)
 125                         {
 126                                 bindings.emplace_back();
 127                                 VkDescriptorSetLayoutBinding &binding = bindings.back();
 128                                 binding.binding = b.bind_point&0xFFFFF;
 129                                 binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
 130                                 binding.descriptorCount = 1;
 131                                 binding.stageFlags = VK_SHADER_STAGE_ALL;
 132                                 binding.pImmutableSamplers = 0;
 133                         }
 134
 135                 for(const ReflectData::UniformInfo &u: rd.uniforms)
 136                         if(u.binding>=0 && static_cast<unsigned>(u.binding>>20)==j && is_image(u.type))
 137                         {
 138                                 bindings.emplace_back();
 139                                 VkDescriptorSetLayoutBinding &binding = bindings.back();
 140                                 binding.binding = u.binding&0xFFFFF;
 141                                 binding.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
 142                                 binding.descriptorCount = 1;
 143                                 binding.stageFlags = VK_SHADER_STAGE_ALL;
 144                                 binding.pImmutableSamplers = 0;
 145                         }
 146
 147                 VkDescriptorSetLayoutCreateInfo set_layout_info = { };
 148                 set_layout_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
 149                 set_layout_info.bindingCount = bindings.size();
 150                 set_layout_info.pBindings = bindings.data();
 151
 152                 vk.CreateDescriptorSetLayout(set_layout_info, desc_set_layout_handles[j]);
 153         }
 154
 155         VkPushConstantRange push_const_range = { };
 156         push_const_range.stageFlags = stage_flags;
 157         push_const_range.offset = 0;
 158         push_const_range.size = (push_const_block ? push_const_block->data_size : 0);
 159
 160         VkPipelineLayoutCreateInfo layout_info = { };
 161         layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
 162         layout_info.setLayoutCount = rd.n_descriptor_sets;
 163         layout_info.pSetLayouts = handle_cast<::VkDescriptorSetLayout *>(desc_set_layout_handles.data());
 164         layout_info.pushConstantRangeCount = (push_const_block ? 1 : 0);
 165         layout_info.pPushConstantRanges = &push_const_range;
 166
 167         vk.CreatePipelineLayout(layout_info, layout_handle);
 168 }
 169
 170 void VulkanProgram::set_debug_name(const string &name)
 171 {
 172 #ifdef DEBUG
 173         debug_name = name;
 174         if(SpirVModule *spirv = static_cast<Program *>(this)->specialized_spirv)
 175                 spirv->set_debug_name(debug_name);
 176 #else
 177         (void)name;
 178 #endif
 179 }
 180
 181 } // namespace GL
 182 } // namespace Msp