LightingShaderPBRDefaultImplementation.cpp

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#include <tdme/engine/subsystems/lighting/LightingShaderPBRDefaultImplementation.h>
 
#include <string>
 
#include <tdme/tdme.h>
#include <tdme/engine/subsystems/lighting/LightingShaderPBRBaseImplementation.h>
#include <tdme/engine/subsystems/renderer/Renderer.h>
#include <tdme/engine/Engine.h>
#include <tdme/os/filesystem/FileSystem.h>
#include <tdme/os/filesystem/FileSystemInterface.h>
 
using std::string;
using std::to_string;
 
using tdme::engine::subsystems::lighting::LightingShaderPBRBaseImplementation;
using tdme::engine::subsystems::lighting::LightingShaderPBRDefaultImplementation;
using tdme::engine::subsystems::renderer::Renderer;
using tdme::engine::Engine;
using tdme::os::filesystem::FileSystem;
using tdme::os::filesystem::FileSystemInterface;
 
bool LightingShaderPBRDefaultImplementation::isSupported(Renderer* renderer) {
    return renderer->isPBRAvailable();
}
 
LightingShaderPBRDefaultImplementation::LightingShaderPBRDefaultImplementation(Renderer* renderer): LightingShaderPBRBaseImplementation(renderer)
{
}
 
const string LightingShaderPBRDefaultImplementation::getId() {
    return "pbr-default";
}
 
void LightingShaderPBRDefaultImplementation::initialize()
{
    auto shaderVersion = renderer->getShaderVersion();
 
    // lighting
    //  vertex shader
    vertexShaderId = renderer->loadShader(
        renderer->SHADER_VERTEX_SHADER,
        "shader/" + shaderVersion + "/lighting/pbr",
        "render_vertexshader.vert",
        string() +
        "#define LIGHT_COUNT " + to_string(Engine::LIGHTS_MAX) + "\n#define USE_PUNCTUAL\n#define MATERIAL_METALLICROUGHNESS\n#define USE_IBL\n"
    );
    if (vertexShaderId == 0) return;
 
    //  fragment shader
    fragmentShaderId = renderer->loadShader(
        renderer->SHADER_FRAGMENT_SHADER,
        "shader/" + shaderVersion + "/lighting/pbr",
        "render_fragmentshader.frag",
        string() +
        "#define LIGHT_COUNT " + to_string(Engine::LIGHTS_MAX) + "\n#define USE_PUNCTUAL\n#define MATERIAL_METALLICROUGHNESS\n#define USE_IBL\n",
        FileSystem::getInstance()->getContentAsString(
            "shader/" + shaderVersion + "/functions/pbr",
            "tonemapping.inc.glsl"
        ) +
        "\n\n" +
        FileSystem::getInstance()->getContentAsString(
            "shader/" + shaderVersion + "/functions/pbr",
            "textures.inc.glsl"
        ) +
        "\n\n" +
        FileSystem::getInstance()->getContentAsString(
            "shader/" + shaderVersion + "/functions/pbr",
            "functions.inc.glsl"
        ) +
        "\n\n" +
        FileSystem::getInstance()->getContentAsString(
            "shader/" + shaderVersion + "/functions/pbr",
            "pbr_lighting.inc.glsl"
        ) +
        "\n\n"
    );
    if (fragmentShaderId == 0) return;
 
    // create, attach and link program
    programId = renderer->createProgram(renderer->PROGRAM_OBJECTS);
    renderer->attachShaderToProgram(programId, vertexShaderId);
    renderer->attachShaderToProgram(programId, fragmentShaderId);
 
    //
    LightingShaderPBRBaseImplementation::initialize();
}
 
void LightingShaderPBRDefaultImplementation::registerShader() {
    Engine::registerShader(Engine::ShaderType::SHADERTYPE_OBJECT, getId());
}
 
void LightingShaderPBRDefaultImplementation::updateShaderParameters(Renderer* renderer, int contextIdx) {
}