749 lines
17 KiB
C++
749 lines
17 KiB
C++
#include "renderer/material.h"
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#include "engine/crc32.h"
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#include "engine/file_system.h"
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#include "engine/log.h"
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#include "engine/lua_wrapper.h"
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#include "engine/path_utils.h"
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#include "engine/profiler.h"
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#include "engine/resource_manager.h"
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#include "engine/stream.h"
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#include "renderer/pipeline.h"
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#include "renderer/renderer.h"
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#include "renderer/shader.h"
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#include "renderer/texture.h"
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#include "gpu/gpu.h"
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namespace Lumix
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{
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static const float DEFAULT_ALPHA_REF_VALUE = 0.3f;
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static struct CustomFlags
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{
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char flags[32][32];
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u32 count;
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} s_custom_flags = {};
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const ResourceType Material::TYPE("material");
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Material::Material(const Path& path, ResourceManager& resource_manager, Renderer& renderer, IAllocator& allocator)
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: Resource(path, resource_manager, allocator)
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, m_shader(nullptr)
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, m_uniforms(allocator)
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, m_texture_count(0)
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, m_renderer(renderer)
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, m_render_states(u64(gpu::StateFlags::CULL_BACK))
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, m_color(1, 1, 1, 1)
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, m_metallic(0.f)
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, m_roughness(1.f)
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, m_emission(0.0f)
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, m_define_mask(0)
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, m_custom_flags(0)
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, m_render_data(nullptr)
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{
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static u32 last_sort_key = 0;
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m_sort_key = ++last_sort_key;
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m_layer = m_renderer.getLayerIdx("default");
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setAlphaRef(DEFAULT_ALPHA_REF_VALUE);
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for (int i = 0; i < MAX_TEXTURE_COUNT; ++i)
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{
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m_textures[i] = nullptr;
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}
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setShader(nullptr);
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}
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Material::~Material()
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{
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ASSERT(isEmpty());
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}
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const char* Material::getCustomFlagName(int index)
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{
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return s_custom_flags.flags[index];
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}
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int Material::getCustomFlagCount()
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{
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return s_custom_flags.count;
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}
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u32 Material::getCustomFlag(const char* flag_name)
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{
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for (u32 i = 0; i < s_custom_flags.count; ++i)
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{
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if (equalStrings(s_custom_flags.flags[i], flag_name)) return 1 << i;
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}
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if (s_custom_flags.count >= lengthOf(s_custom_flags.flags))
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{
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ASSERT(false);
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return 0;
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}
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copyString(s_custom_flags.flags[s_custom_flags.count], flag_name);
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++s_custom_flags.count;
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return 1 << (s_custom_flags.count - 1);
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}
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bool Material::isDefined(u8 define_idx) const
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{
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return (m_define_mask & (1 << define_idx)) != 0;
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}
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void Material::setDefine(u8 define_idx, bool enabled)
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{
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u32 old_mask = m_define_mask;
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if (enabled) {
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m_define_mask |= 1 << define_idx;
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}
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else {
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m_define_mask &= ~(1 << define_idx);
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}
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if(old_mask != m_define_mask) updateRenderData(false);
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}
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Material::Uniform* Material::findUniform(u32 name_hash) {
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for (Uniform& u : m_uniforms) {
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if (u.name_hash == name_hash) return &u;
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}
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return nullptr;
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}
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void Material::unload()
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{
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m_uniforms.clear();
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for (u32 i = 0; i < m_texture_count; i++) {
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if (m_textures[i]) {
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removeDependency(*m_textures[i]);
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m_textures[i]->getResourceManager().unload(*m_textures[i]);
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}
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}
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m_texture_count = 0;
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for(Texture*& tex : m_textures ) {
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tex = nullptr;
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}
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m_renderer.runInRenderThread(m_render_data, [](Renderer& renderer, void* ptr){
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LUMIX_DELETE(renderer.getAllocator(), (RenderData*)ptr);
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});
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m_render_data = nullptr;
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setShader(nullptr);
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m_alpha_ref = 0.3f;
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m_color.set(1, 1, 1, 1);
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m_custom_flags = 0;
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m_define_mask = 0;
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m_metallic = 1.0f;
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m_roughness = 1.0f;
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m_emission = 0.0f;
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m_render_states = u64(gpu::StateFlags::CULL_BACK);
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}
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bool Material::save(IOutputStream& file)
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{
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if(!isReady()) return false;
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if(!m_shader) return false;
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file << "shader \"" << m_shader->getPath().c_str() << "\"\n";
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file << "backface_culling(" << (isBackfaceCulling() ? "true" : "false") << ")\n";
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file << "layer \"" << m_renderer.getLayerName(m_layer) << "\"\n";
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file << "emission(" << m_emission << ")\n";
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file << "metallic(" << m_metallic << ")\n";
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file << "roughness(" << m_roughness << ")\n";
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file << "alpha_ref(" << m_alpha_ref << ")\n";
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file << "defines {";
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bool first_define = true;
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for (int i = 0; i < sizeof(m_define_mask) * 8; ++i) {
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if ((m_define_mask & (1 << i)) == 0) continue;
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const char* def = m_renderer.getShaderDefine(i);
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if (!first_define) file << ", ";
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first_define = false;
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file << "\"" << def << "\"";
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}
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file << "}\n";
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file << "color { " << m_color.x << ", " << m_color.y << ", " << m_color.z << ", " << m_color.w << " }\n";
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for (u32 i = 0; i < m_texture_count; ++i) {
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char path[MAX_PATH_LENGTH];
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if (m_textures[i] && m_textures[i] != m_shader->m_texture_slots[i].default_texture) {
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copyString(Span(path), m_textures[i]->getPath().c_str());
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}
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else {
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path[0] = '\0';
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}
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file << "texture \"/" << path << "\"\n";
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}
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file << "layer \"" << m_renderer.getLayerName(m_layer) << "\"\n";
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if (m_custom_flags != 0) {
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for (int i = 0; i < 32; ++i)
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{
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if (m_custom_flags & (1 << i)) {
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file << "custom_flag \"" << s_custom_flags.flags[i] << "\"\n";
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}
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}
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}
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auto writeArray = [&file](const float* value, u32 num) {
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file << "{ ";
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for (u32 i = 0; i < num; ++i) {
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if (i > 0) file << ", ";
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file << value[i];
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}
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file << " }";
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};
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for (const Shader::Uniform& su : m_shader->m_uniforms) {
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for (const Uniform& mu : m_uniforms) {
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if(mu.name_hash == su.name_hash) {
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file << "uniform(\"" << su.name << "\", ";
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switch(su.type) {
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case Shader::Uniform::FLOAT: file << mu.float_value; break;
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case Shader::Uniform::INT: file << *(int*)&mu.float_value; break;
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case Shader::Uniform::COLOR:
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case Shader::Uniform::VEC4: writeArray(mu.vec4, 4); break;
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case Shader::Uniform::VEC3: writeArray(mu.vec4, 3); break;
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case Shader::Uniform::VEC2: writeArray(mu.vec4, 2); break;
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case Shader::Uniform::MATRIX4: writeArray(mu.matrix, 16); break;
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default: ASSERT(false); break;
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}
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file << ")\n";
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break;
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}
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}
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}
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return true;
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}
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int Material::uniform(lua_State* L) {
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const char* name = LuaWrapper::checkArg<const char*>(L, 1);
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lua_getfield(L, LUA_GLOBALSINDEX, "this");
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Material* material = (Material*)lua_touserdata(L, -1);
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lua_pop(L, 1);
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Uniform u;
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u.name_hash = crc32(name);
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switch (lua_type(L, 2)) {
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case LUA_TNUMBER: u.float_value = LuaWrapper::toType<float>(L, 2); break;
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case LUA_TTABLE: {
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const size_t len = lua_objlen(L, 2);
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switch (len) {
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case 2: *(Vec2*)u.vec2 = LuaWrapper::toType<Vec2>(L, 2); break;
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case 3: *(Vec3*)u.vec3 = LuaWrapper::toType<Vec3>(L, 2); break;
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case 4: *(Vec4*)u.vec4 = LuaWrapper::toType<Vec4>(L, 2); break;
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case 16: *(Matrix*)u.vec4 = LuaWrapper::toType<Matrix>(L, 2); break;
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default: luaL_error(L, "Uniform %s has unsupported type", name); break;
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}
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break;
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}
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default: luaL_error(L, "Uniform %s has unsupported type", name); break;
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}
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material->m_uniforms.push(u);
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return 0;
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}
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void Material::setTexturePath(int i, const Path& path)
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{
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if (path.length() == 0)
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{
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setTexture(i, nullptr);
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}
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else
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{
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Texture* texture = m_resource_manager.getOwner().load<Texture>(path);
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setTexture(i, texture);
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}
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}
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void Material::setTexture(u32 i, Texture* texture)
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{
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Texture* old_texture = i < m_texture_count ? m_textures[i] : nullptr;
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if (!texture && m_shader && m_shader->isReady() && m_shader->m_texture_slots[i].default_texture)
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{
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texture = m_shader->m_texture_slots[i].default_texture;
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texture->getResourceManager().load(*texture);
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}
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if (texture) addDependency(*texture);
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m_textures[i] = texture;
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if (i >= m_texture_count) m_texture_count = i + 1;
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if (old_texture) {
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removeDependency(*old_texture);
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old_texture->getResourceManager().unload(*old_texture);
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}
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if (isReady() && m_shader)
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{
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int define_idx = m_shader->m_texture_slots[i].define_idx;
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if(define_idx >= 0)
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{
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if(m_textures[i])
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{
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m_define_mask |= 1 << define_idx;
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}
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else
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{
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m_define_mask &= ~(1 << define_idx);
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}
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}
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}
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updateRenderData(false);
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}
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void Material::setShader(const Path& path)
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{
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Shader* shader = m_resource_manager.getOwner().load<Shader>(path);
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setShader(shader);
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}
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void Material::onBeforeReady()
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{
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if (!m_shader) return;
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for(u32 i = 0; i < m_shader->m_texture_slot_count; ++i) {
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if (!m_textures[i] && m_shader->m_texture_slots[i].default_texture) {
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m_textures[i] = m_shader->m_texture_slots[i].default_texture;
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if (i >= m_texture_count) m_texture_count = i + 1;
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m_textures[i]->getResourceManager().load(*m_textures[i]);
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addDependency(*m_textures[i]);
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return;
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}
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}
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for(int i = 0; i < m_shader->m_uniforms.size(); ++i)
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{
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const Shader::Uniform& shader_uniform = m_shader->m_uniforms[i];
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bool found = false;
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for(int j = i; j < m_uniforms.size(); ++j)
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{
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if(m_uniforms[j].name_hash == shader_uniform.name_hash)
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{
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auto tmp = m_uniforms[i];
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m_uniforms[i] = m_uniforms[j];
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m_uniforms[j] = tmp;
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found = true;
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break;
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}
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}
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if(found) continue;
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if(i < m_uniforms.size())
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{
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m_uniforms.emplace(m_uniforms[i]);
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}
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else
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{
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m_uniforms.emplace();
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}
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m_uniforms[i].name_hash = shader_uniform.name_hash;
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}
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for(u32 i = 0; i < m_shader->m_texture_slot_count; ++i) {
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const int define_idx = m_shader->m_texture_slots[i].define_idx;
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if(define_idx >= 0) {
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if(m_textures[i]) {
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m_define_mask |= 1 << define_idx;
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}
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else {
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m_define_mask &= ~(1 << define_idx);
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}
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}
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}
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for (u32 i = m_shader->m_texture_slot_count; i < m_texture_count; ++i) {
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setTexture(i, nullptr);
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}
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m_texture_count = minimum(m_texture_count, m_shader->m_texture_slot_count);
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updateRenderData(true);
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}
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void Material::updateRenderData(bool on_before_ready)
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{
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if (!m_shader) return;
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if (!on_before_ready && !isReady()) return;
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if(m_render_data) {
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m_renderer.destroyMaterialConstants(m_render_data->material_constants);
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m_renderer.runInRenderThread(m_render_data, [](Renderer& renderer, void* ptr){
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LUMIX_DELETE(renderer.getAllocator(), (RenderData*)ptr);
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});
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}
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m_render_data = LUMIX_NEW(m_renderer.getAllocator(), RenderData);
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m_render_data->define_mask = m_define_mask;
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m_render_data->render_states = m_render_states;
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m_render_data->textures_count = m_texture_count;
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MaterialConsts cs = {};
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static_assert(sizeof(cs) == 256, "Renderer::MaterialConstants must have 256B");
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cs.color = m_color;
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cs.emission = m_emission;
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cs.metallic = m_metallic;
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cs.roughness = m_roughness;
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memset(cs.custom, 0, sizeof(cs.custom));
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for (const Shader::Uniform& shader_uniform : m_shader->m_uniforms) {
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for (Uniform& mat_uniform : m_uniforms) {
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if (shader_uniform.name_hash == mat_uniform.name_hash) {
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const u32 size = shader_uniform.size();
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memcpy((u8*)cs.custom + shader_uniform.offset, mat_uniform.matrix, size);
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break;
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}
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}
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}
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m_render_data->material_constants = m_renderer.createMaterialConstants(cs);
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for(u32 i = 0; i < m_texture_count; ++i) {
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m_render_data->textures[i] = m_textures[i] ? m_textures[i]->handle : gpu::INVALID_TEXTURE;
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}
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}
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void Material::setShader(Shader* shader)
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{
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if (m_shader) {
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Shader* shader = m_shader;
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m_shader = nullptr;
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removeDependency(*shader);
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shader->getResourceManager().unload(*shader);
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}
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m_shader = shader;
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if (m_shader) {
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addDependency(*m_shader);
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}
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updateRenderData(false);
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}
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Texture* Material::getTextureByName(const char* name) const
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{
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if (!m_shader) return nullptr;
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for (int i = 0, c = m_shader->m_texture_slot_count; i < c; ++i) {
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if (equalStrings(m_shader->m_texture_slots[i].name, name)) {
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return m_textures[i];
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}
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}
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return nullptr;
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}
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bool Material::isTextureDefine(u8 define_idx) const
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{
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if (!m_shader) return false;
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for (int i = 0, c = m_shader->m_texture_slot_count; i < c; ++i) {
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if (m_shader->m_texture_slots[i].define_idx == define_idx) {
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return true;
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}
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}
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return false;
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}
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void Material::enableBackfaceCulling(bool enable)
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{
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if (enable) {
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m_render_states |= (u64)gpu::StateFlags::CULL_BACK;
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}
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else {
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m_render_states &= ~(u64)gpu::StateFlags::CULL_BACK;
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}
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}
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bool Material::isBackfaceCulling() const
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{
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return (m_render_states & (u64)gpu::StateFlags::CULL_BACK) != 0;
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}
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namespace LuaAPI
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{
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int layer(lua_State* L)
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{
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const char* layer_name = LuaWrapper::checkArg<const char*>(L, 1);
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lua_getfield(L, LUA_GLOBALSINDEX, "this");
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Material* material = (Material*)lua_touserdata(L, -1);
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lua_pop(L, 1);
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const u8 layer = material->getRenderer().getLayerIdx(layer_name);
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material->setLayer(layer);
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return 0;
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}
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int roughness(lua_State* L)
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{
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const float r = LuaWrapper::checkArg<float>(L, 1);
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lua_getfield(L, LUA_GLOBALSINDEX, "this");
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Material* material = (Material*)lua_touserdata(L, -1);
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lua_pop(L, 1);
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material->setRoughness(r);
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return 0;
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}
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int alpha_ref(lua_State* L)
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{
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const float r = LuaWrapper::checkArg<float>(L, 1);
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lua_getfield(L, LUA_GLOBALSINDEX, "this");
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Material* material = (Material*)lua_touserdata(L, -1);
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lua_pop(L, 1);
|
|
|
|
material->setAlphaRef(r);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int backface_culling(lua_State* L)
|
|
{
|
|
const bool enable = LuaWrapper::checkArg<bool>(L, 1);
|
|
|
|
lua_getfield(L, LUA_GLOBALSINDEX, "this");
|
|
Material* material = (Material*)lua_touserdata(L, -1);
|
|
lua_pop(L, 1);
|
|
|
|
material->enableBackfaceCulling(enable);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int color(lua_State* L)
|
|
{
|
|
const Vec4 c = LuaWrapper::checkArg<Vec4>(L, 1);
|
|
lua_getfield(L, LUA_GLOBALSINDEX, "this");
|
|
Material* material = (Material*)lua_touserdata(L, -1);
|
|
lua_pop(L, 1);
|
|
|
|
material->setColor(c);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int custom_flag(lua_State* L)
|
|
{
|
|
lua_getfield(L, LUA_GLOBALSINDEX, "this");
|
|
Material* material = (Material*)lua_touserdata(L, -1);
|
|
lua_pop(L, 1);
|
|
|
|
const char* flag_name = LuaWrapper::checkArg<const char*>(L, 1);
|
|
|
|
const u32 flag = material->getCustomFlag(flag_name);
|
|
material->setCustomFlag(flag);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int metallic(lua_State* L)
|
|
{
|
|
const float m = LuaWrapper::checkArg<float>(L, 1);
|
|
lua_getfield(L, LUA_GLOBALSINDEX, "this");
|
|
Material* material = (Material*)lua_touserdata(L, -1);
|
|
lua_pop(L, 1);
|
|
|
|
material->setMetallic(m);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int emission(lua_State* L)
|
|
{
|
|
const float m = LuaWrapper::checkArg<float>(L, 1);
|
|
lua_getfield(L, LUA_GLOBALSINDEX, "this");
|
|
Material* material = (Material*)lua_touserdata(L, -1);
|
|
lua_pop(L, 1);
|
|
|
|
material->setEmission(m);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int defines(lua_State* L)
|
|
{
|
|
lua_getfield(L, LUA_GLOBALSINDEX, "this");
|
|
Material* material = (Material*)lua_touserdata(L, -1);
|
|
lua_pop(L, 1);
|
|
|
|
LuaWrapper::forEachArrayItem<const char*>(L, 1, "array of strings expected", [&](const char* v){
|
|
material->setDefine(material->getRenderer().getShaderDefineIdx(v), true);
|
|
});
|
|
return 0;
|
|
}
|
|
|
|
|
|
int shader(lua_State* L)
|
|
{
|
|
const char* path = LuaWrapper::checkArg<const char*>(L, 1);
|
|
lua_getfield(L, LUA_GLOBALSINDEX, "this");
|
|
Material* material = (Material*)lua_touserdata(L, -1);
|
|
lua_pop(L, 1);
|
|
material->setShader(Path(path));
|
|
return 0;
|
|
}
|
|
|
|
|
|
int texture(lua_State* L)
|
|
{
|
|
lua_getfield(L, LUA_GLOBALSINDEX, "this");
|
|
Material* material = (Material*)lua_touserdata(L, -1);
|
|
lua_pop(L, 1);
|
|
char material_dir[MAX_PATH_LENGTH];
|
|
PathUtils::getDir(Span(material_dir), material->getPath().c_str());
|
|
|
|
if (lua_istable(L, 1)) {
|
|
lua_getfield(L, 1, "source");
|
|
if (lua_isstring(L, -1)) {
|
|
const char* path = lua_tostring(L, -1);
|
|
const int idx = material->getTextureCount();
|
|
|
|
char texture_path[MAX_PATH_LENGTH];
|
|
if (path[0] != '/' && path[0] != '\\' && path[0] != '\0')
|
|
{
|
|
copyString(texture_path, material_dir);
|
|
catString(texture_path, path);
|
|
}
|
|
else
|
|
{
|
|
copyString(texture_path, path);
|
|
}
|
|
|
|
material->setTexturePath(idx, Path(texture_path));
|
|
}
|
|
else {
|
|
logError("Renderer") << material->getPath() << " texture's source is not a string.";
|
|
lua_pop(L, 1);
|
|
return 0;
|
|
}
|
|
lua_pop(L, 1);
|
|
|
|
|
|
Texture* texture = material->getTexture(material->getTextureCount() - 1);
|
|
bool keep_data = false;
|
|
LuaWrapper::getOptionalField(L, 1, "keep_data", &keep_data);
|
|
if (keep_data) texture->addDataReference();
|
|
|
|
return 0;
|
|
}
|
|
|
|
const char* path = LuaWrapper::checkArg<const char*>(L, 1);
|
|
const int idx = material->getTextureCount();
|
|
|
|
char texture_path[MAX_PATH_LENGTH];
|
|
if (path[0] != '/' && path[0] != '\\' && path[0] != '\0')
|
|
{
|
|
copyString(texture_path, material_dir);
|
|
catString(texture_path, path);
|
|
}
|
|
else
|
|
{
|
|
copyString(texture_path, path);
|
|
}
|
|
|
|
material->setTexturePath(idx, Path(texture_path));
|
|
return 0;
|
|
}
|
|
|
|
|
|
} // namespace LuaAPI
|
|
|
|
|
|
bool Material::load(u64 size, const u8* mem)
|
|
{
|
|
PROFILE_FUNCTION();
|
|
|
|
MaterialManager& mng = static_cast<MaterialManager&>(getResourceManager());
|
|
lua_State* L = mng.getState(*this);
|
|
|
|
m_uniforms.clear();
|
|
m_render_states = u64(gpu::StateFlags::CULL_BACK);
|
|
m_custom_flags = 0;
|
|
setAlphaRef(DEFAULT_ALPHA_REF_VALUE);
|
|
|
|
const Span<const char> content((const char*)mem, (u32)size);
|
|
if (!LuaWrapper::execute(L, content, getPath().c_str(), 0)) {
|
|
return false;
|
|
}
|
|
|
|
if (!m_shader) {
|
|
logError("Renderer") << "Material " << getPath() << " does not have a shader.";
|
|
return false;
|
|
}
|
|
|
|
m_size = size;
|
|
return true;
|
|
}
|
|
|
|
lua_State* MaterialManager::getState(Material& material) const {
|
|
lua_pushlightuserdata(m_state, &material);
|
|
lua_setfield(m_state, LUA_GLOBALSINDEX, "this");
|
|
return m_state;
|
|
}
|
|
|
|
MaterialManager::~MaterialManager() {
|
|
lua_close(m_state);
|
|
}
|
|
|
|
MaterialManager::MaterialManager(Renderer& renderer, IAllocator& allocator)
|
|
: ResourceManager(allocator)
|
|
, m_renderer(renderer)
|
|
{
|
|
m_state = luaL_newstate();
|
|
|
|
#define DEFINE_LUA_FUNC(func) \
|
|
lua_pushcfunction(m_state, LuaAPI::func); \
|
|
lua_setfield(m_state, LUA_GLOBALSINDEX, #func);
|
|
|
|
DEFINE_LUA_FUNC(alpha_ref);
|
|
DEFINE_LUA_FUNC(backface_culling);
|
|
DEFINE_LUA_FUNC(color);
|
|
DEFINE_LUA_FUNC(custom_flag);
|
|
DEFINE_LUA_FUNC(defines);
|
|
DEFINE_LUA_FUNC(emission);
|
|
DEFINE_LUA_FUNC(layer);
|
|
DEFINE_LUA_FUNC(metallic);
|
|
DEFINE_LUA_FUNC(roughness);
|
|
DEFINE_LUA_FUNC(shader);
|
|
DEFINE_LUA_FUNC(texture);
|
|
|
|
lua_pushcfunction(m_state, &Material::uniform);
|
|
lua_setfield(m_state, LUA_GLOBALSINDEX, "uniform");
|
|
|
|
#undef DEFINE_LUA_FUNC
|
|
|
|
}
|
|
|
|
Resource* MaterialManager::createResource(const Path& path) {
|
|
return LUMIX_NEW(m_allocator, Material)(path, *this, m_renderer, m_allocator);
|
|
}
|
|
|
|
void MaterialManager::destroyResource(Resource& resource) {
|
|
LUMIX_DELETE(m_allocator, &resource);
|
|
};
|
|
|
|
} // namespace Lumix
|