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VKShader.cpp
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#include "VKPCH.h"
size_t ShaderCounter = 0;
VKShader::VKShader(BearShaderType type):m_Type(type)
{
ShaderCounter++;
Shader.module = 0;
}
VKShader::~VKShader()
{
ShaderCounter--;
if (Shader.module)vkDestroyShaderModule(Factory->Device, Shader.module, 0);
}
#ifdef DEVELOPER_VERSION
static shaderc_include_result* CallbackIncluder(void* user_data, const char* requested_source, int type,const char* requesting_source, size_t include_depth)
{
if (user_data == nullptr)return nullptr;
shaderc_include_result* result = bear_alloc< shaderc_include_result>(1);
#ifdef UNICODE
auto stream = reinterpret_cast<BearIncluder*>(user_data)->OpenAsBuffer(*BearEncoding::FastToUnicode(requested_source));
#else
auto stream = reinterpret_cast<BearIncluder*>(user_data)->OpenAsBuffer(requested_source);
#endif
if (!*stream)return nullptr;
result->content_length = stream->Size();
auto data = stream->Read();
result->content = reinterpret_cast<char*>(*data);
data.clear_no_free();
result->source_name = requested_source;
result->source_name_length = BearString::GetSize(requested_source);
return result;
}
static void CallbackInclduerRelease(void* user_data, shaderc_include_result* include_result)
{
bear_free(include_result->content);
bear_free(include_result);
}
extern bool GDebugRender;
bool VKShader::LoadAsTextShaderc(const bchar* text, const bchar* entry_point, const BearMap<BearStringConteniar, BearStringConteniar>& defines, BearString& out_error, BearIncluder* includer, const bchar* file_name, const bchar* out_pdb)
{
shaderc_compiler_t compiler = shaderc_compiler_initialize();
shaderc_compile_options_t options = shaderc_compile_options_initialize();
shaderc_compile_options_set_source_language(options, shaderc_source_language_hlsl);
#ifdef VK_11
shaderc_compile_options_set_target_env(options, shaderc_target_env_vulkan, shaderc_env_version_vulkan_1_1);
shaderc_compile_options_set_target_spirv(options, shaderc_spirv_version_1_3);
#else
shaderc_compile_options_set_target_env(options, shaderc_target_env_vulkan, shaderc_env_version_vulkan_1_0);
shaderc_compile_options_set_target_spirv(options, shaderc_spirv_version_1_0);
#endif
#ifdef VK_11
shaderc_compile_options_set_forced_version_profile(options, 460, shaderc_profile_core);
#else
shaderc_compile_options_set_forced_version_profile(options, 450, shaderc_profile_core);
#endif
if (GDebugRender)
{
shaderc_compile_options_set_optimization_level(options, shaderc_optimization_level_zero);
shaderc_compile_options_set_generate_debug_info(options);
}
else
{
shaderc_compile_options_set_optimization_level(options, shaderc_optimization_level_performance);
}
shaderc_shader_kind shader_kind = shaderc_shader_kind::shaderc_vertex_shader;
switch (m_Type)
{
case BearShaderType::Vertex:
shader_kind = shaderc_shader_kind::shaderc_vertex_shader;
break;
case BearShaderType::Hull:
shader_kind = shaderc_shader_kind::shaderc_tess_control_shader;
break;
case BearShaderType::Domain:
shader_kind = shaderc_shader_kind::shaderc_tess_evaluation_shader;
break;
case BearShaderType::Geometry:
shader_kind = shaderc_shader_kind::shaderc_geometry_shader;
break;
case BearShaderType::Pixel:
shader_kind = shaderc_shader_kind::shaderc_fragment_shader;
break;
case BearShaderType::Compute:
shader_kind = shaderc_shader_kind::shaderc_compute_shader;
break;
default:
BEAR_CHECK(0);
break;
};
shaderc_compile_options_set_include_callbacks(options, &CallbackIncluder, &CallbackInclduerRelease, reinterpret_cast<void*>(includer));
for (auto b = defines.begin(), e = defines.end(); b != e; b++)
{
#ifdef UNICODE
shaderc_compile_options_add_macro_definition(options, *BearEncoding::FastToAnsi(*b->first), b->first.size(), *BearEncoding::FastToAnsi(*b->second), b->second.size());
#else
shaderc_compile_options_add_macro_definition(options, *b->first, b->first.size(), *b->second, b->second.size());
#endif
}
BearStringAnsi FileName = !file_name ? "noname" :
#ifdef UNICODE
(BearEncoding::ToAnsi(file_name));
#else
(file_name);
#endif
#ifdef UNICODE
m_EntryPointName = *BearEncoding::FastToAnsi(entry_point);
shaderc_compilation_result_t result = shaderc_compile_into_spv(compiler, *BearEncoding::FastToAnsi(text), BearString::GetSize(text), shader_kind, *FileName, *BearEncoding::FastToAnsi(entry_point), options);
#else
m_EntryPointName = entry_point;
shaderc_compilation_result_t result = shaderc_compile_into_spv(compiler, text, strlen(text), shader_kind, *FileName, entry_point, options);
#endif
if (shaderc_result_get_compilation_status(result) == shaderc_compilation_status_compilation_error)
{
const char* Text = shaderc_result_get_error_message(result);
#ifdef UNICODE
out_error = BearEncoding::FastToUnicode(Text);
#else
out_error = Text;
#endif
shaderc_compile_options_release(options);
shaderc_result_release(result);
shaderc_compiler_release(compiler);
return false;
}
if (shaderc_result_get_num_warnings(result))
{
const char* Text = shaderc_result_get_error_message(result);
#ifdef UNICODE
out_error = BearEncoding::FastToUnicode(Text);
#else
out_error = Text;
#endif
}
if (shaderc_result_get_compilation_status(result) != shaderc_compilation_status_success)
{
BEAR_PRINTF(TEXT("ShaderRC:Status %d"), shaderc_result_get_compilation_status(result));
}
BEAR_CHECK(shaderc_result_get_compilation_status(result) == shaderc_compilation_status_success);
ShaderOnMemory.clear();
ShaderOnMemory.resize(shaderc_result_get_length(result) / 4);
memcpy(ShaderOnMemory.data(), shaderc_result_get_bytes(result), shaderc_result_get_length(result));
BEAR_CHECK(shaderc_result_get_length(result) % 4 == 0);
shaderc_compile_options_release(options);
shaderc_result_release(result);
shaderc_compiler_release(compiler);
CreateShader();
return true;
}
bool VKShader::LoadAsText(const bchar* text, const bchar* entry_point, const BearMap<BearStringConteniar, BearStringConteniar>& defines, BearString& out_error, BearIncluder* includer, const bchar* file_name, const bchar* out_pdb)
{
switch (m_Type)
{
case BearShaderType::Mesh:
break;
case BearShaderType::Amplification:
break;
#ifdef RTX
case BearShaderType::RayTracing:
return LoadAsTextDXC(text, entry_point, defines, out_error, includer, file_name, out_pdb);
#endif
default:
return LoadAsTextShaderc(text, entry_point, defines, out_error, includer, file_name, out_pdb);
break;
}
BEAR_ASSERT(false);
return false;
}
void* VKShader::GetPointer()
{
return ShaderOnMemory.data();
}
size_t VKShader::GetSize()
{
return ShaderOnMemory.size()*4;
}
#endif
void VKShader::LoadAsBinary(void* data, size_t size)
{
if (size == 0)return;
ShaderOnMemory.clear();
BEAR_CHECK(size % 4 == 0);
ShaderOnMemory.resize( size/4);
memcpy(ShaderOnMemory.data(), data, size);
CreateShader();
}
void VKShader::CreateShader()
{
if (ShaderOnMemory.size() == 0)return;
if (Shader.module)vkDestroyShaderModule(Factory->Device, Shader.module, 0);
Shader.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
Shader.pNext = NULL;
Shader.pSpecializationInfo = NULL;
Shader.flags = 0;
switch (m_Type)
{
case BearShaderType::Vertex:
Shader.stage = VK_SHADER_STAGE_VERTEX_BIT;
break;
case BearShaderType::Pixel:
Shader.stage = VK_SHADER_STAGE_FRAGMENT_BIT;
break;
case BearShaderType::Hull:
Shader.stage = VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT;
break;
case BearShaderType::Domain:
Shader.stage = VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT;
break;
case BearShaderType::Geometry:
Shader.stage = VK_SHADER_STAGE_GEOMETRY_BIT;
break;
case BearShaderType::Compute:
Shader.stage = VK_SHADER_STAGE_COMPUTE_BIT;
break;
case BearShaderType::RayTracing:
break;
default:
BEAR_ASSERT(0);
break;
}
Shader.pName = *m_EntryPointName;
VkShaderModuleCreateInfo moduleCreateInfo;
moduleCreateInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
moduleCreateInfo.pNext = NULL;
moduleCreateInfo.flags = 0;
moduleCreateInfo.codeSize = ShaderOnMemory.size()*sizeof(uint32);
moduleCreateInfo.pCode = (uint32*)ShaderOnMemory.data();
V_CHK(vkCreateShaderModule(Factory->Device, &moduleCreateInfo, NULL, &Shader.module));
}