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main.cpp
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main.cpp
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#include "Midgard/StaticTerrain.hpp"
#if !defined(USE_OPENGL_ES)
#include "Midgard/DynamicTerrain.hpp"
#endif
#include <RaZ/Application.hpp>
#include <RaZ/Data/ImageFormat.hpp>
#include <RaZ/Math/Transform.hpp>
#include <RaZ/Render/Camera.hpp>
#include <RaZ/Render/Light.hpp>
#include <RaZ/Render/MeshRenderer.hpp>
#include <RaZ/Render/RenderSystem.hpp>
#include <RaZ/Utils/Logger.hpp>
using namespace Raz::Literals;
namespace {
constexpr unsigned int terrainWidth = 512;
constexpr unsigned int terrainDepth = 512;
constexpr std::string_view fogShaderSource = {
#include "fog.frag.embed"
};
} // namespace
int main() {
try {
////////////////////
// Initialization //
////////////////////
Raz::Application app;
Raz::World& world = app.addWorld(3);
Raz::Logger::setLoggingLevel(Raz::LoggingLevel::ALL);
///////////////
// Rendering //
///////////////
auto& renderSystem = world.addSystem<Raz::RenderSystem>(1280u, 720u, "Midgard", Raz::WindowSetting::DEFAULT, 2);
Raz::Window& window = renderSystem.getWindow();
// Allowing to quit the application with the Escape key
window.addKeyCallback(Raz::Keyboard::ESCAPE, [&app] (float /* deltaTime */) noexcept { app.quit(); });
// Allowing to quit the application when the close button is clicked
window.setCloseCallback([&app] () noexcept { app.quit(); });
///////////////////
// Camera entity //
///////////////////
Raz::Entity& camera = world.addEntity();
auto& cameraComp = camera.addComponent<Raz::Camera>(window.getWidth(), window.getHeight(), 45_deg, 0.1f, 1000.f);
auto& cameraTrans = camera.addComponent<Raz::Transform>(Raz::Vec3f(0.f, 30.f, 120.f));
/////////
// Sun //
/////////
Raz::Entity& light = world.addEntity();
light.addComponent<Raz::Light>(Raz::LightType::DIRECTIONAL, // Type
Raz::Vec3f(0.f, -1.f, -1.f).normalize(), // Direction
3.f, // Energy
Raz::ColorPreset::White); // Color (RGB)
light.addComponent<Raz::Transform>();
//////////////
// Fog pass //
//////////////
Raz::RenderGraph& renderGraph = renderSystem.getRenderGraph();
Raz::RenderPass& geometryPass = renderGraph.getGeometryPass();
const Raz::Texture2DPtr depthBuffer = Raz::Texture2D::create(window.getWidth(), window.getHeight(), Raz::TextureColorspace::DEPTH);
const Raz::Texture2DPtr colorBuffer = Raz::Texture2D::create(window.getWidth(), window.getHeight(), Raz::TextureColorspace::RGB);
#if !defined(USE_OPENGL_ES)
if (Raz::Renderer::checkVersion(4, 3)) {
Raz::Renderer::setLabel(Raz::RenderObjectType::TEXTURE, depthBuffer->getIndex(), "Depth buffer");
Raz::Renderer::setLabel(Raz::RenderObjectType::TEXTURE, colorBuffer->getIndex(), "Color buffer");
}
#endif
geometryPass.setWriteDepthTexture(depthBuffer);
geometryPass.addWriteColorTexture(colorBuffer, 0);
Raz::RenderPass& fogPass = renderGraph.addNode(Raz::FragmentShader::loadFromSource(fogShaderSource), "Fog");
fogPass.addReadTexture(depthBuffer, "uniSceneBuffers.depth");
fogPass.addReadTexture(colorBuffer, "uniSceneBuffers.color");
fogPass.getProgram().setAttribute(light.getComponent<Raz::Light>().getDirection(), "uniSunDir");
fogPass.getProgram().setAttribute(0.1f, "uniFogDensity");
fogPass.getProgram().sendAttributes();
geometryPass.addChildren(fogPass);
/////////////
// Terrain //
/////////////
#if !defined(USE_OPENGL_ES)
Raz::Entity& dynamicTerrainEntity = world.addEntity();
DynamicTerrain dynamicTerrain(dynamicTerrainEntity, terrainWidth, terrainDepth, 30.f, 3.f);
#endif
Raz::Entity& staticTerrainEntity = world.addEntity();
StaticTerrain staticTerrain(staticTerrainEntity, terrainWidth, terrainDepth, 30.f, 3.f);
const Raz::Image& colorMap = staticTerrain.computeColorMap();
const Raz::Image& normalMap = staticTerrain.computeNormalMap();
const Raz::Image& slopeMap = staticTerrain.computeSlopeMap();
#if !defined(USE_OPENGL_ES)
Raz::ImageFormat::save("colorMap.png", colorMap);
Raz::ImageFormat::save("normalMap.png", normalMap);
Raz::ImageFormat::save("slopeMap.hdr", slopeMap);
#endif
/////////////////////
// Camera controls //
/////////////////////
float cameraSpeed = 1.f;
window.addKeyCallback(Raz::Keyboard::LEFT_SHIFT,
[&cameraSpeed] (float /* deltaTime */) noexcept { cameraSpeed = 2.f; },
Raz::Input::ONCE,
[&cameraSpeed] () noexcept { cameraSpeed = 1.f; });
window.addKeyCallback(Raz::Keyboard::SPACE, [&cameraTrans, &cameraSpeed] (float deltaTime) {
cameraTrans.move(0.f, (10.f * deltaTime) * cameraSpeed, 0.f);
});
window.addKeyCallback(Raz::Keyboard::V, [&cameraTrans, &cameraSpeed] (float deltaTime) {
cameraTrans.move(0.f, (-10.f * deltaTime) * cameraSpeed, 0.f);
});
window.addKeyCallback(Raz::Keyboard::W, [&cameraTrans, &cameraComp, &cameraSpeed] (float deltaTime) {
const float moveVal = (-10.f * deltaTime) * cameraSpeed;
cameraTrans.move(0.f, 0.f, moveVal);
cameraComp.setOrthographicBound(cameraComp.getOrthographicBound() + moveVal);
});
window.addKeyCallback(Raz::Keyboard::S, [&cameraTrans, &cameraComp, &cameraSpeed] (float deltaTime) {
const float moveVal = (10.f * deltaTime) * cameraSpeed;
cameraTrans.move(0.f, 0.f, moveVal);
cameraComp.setOrthographicBound(cameraComp.getOrthographicBound() + moveVal);
});
window.addKeyCallback(Raz::Keyboard::A, [&cameraTrans, &cameraSpeed] (float deltaTime) {
cameraTrans.move((-10.f * deltaTime) * cameraSpeed, 0.f, 0.f);
});
window.addKeyCallback(Raz::Keyboard::D, [&cameraTrans, &cameraSpeed] (float deltaTime) {
cameraTrans.move((10.f * deltaTime) * cameraSpeed, 0.f, 0.f);
});
window.setMouseScrollCallback([&cameraComp] (double /* xOffset */, double yOffset) {
const float newFov = Raz::Degreesf(cameraComp.getFieldOfView()).value + static_cast<float>(-yOffset) * 2.f;
cameraComp.setFieldOfView(Raz::Degreesf(std::clamp(newFov, 15.f, 90.f)));
});
bool cameraLocked = true; // To allow moving the camera using the mouse
window.addMouseButtonCallback(Raz::Mouse::RIGHT_CLICK, [&cameraLocked, &window] (float) {
cameraLocked = false;
window.setCursorState(Raz::Cursor::DISABLED);
}, Raz::Input::ONCE, [&cameraLocked, &window] () {
cameraLocked = true;
window.setCursorState(Raz::Cursor::NORMAL);
});
window.setMouseMoveCallback([&cameraLocked, &cameraTrans, &window] (double xMove, double yMove) {
if (cameraLocked)
return;
// Dividing move by window size to scale between -1 and 1
cameraTrans.rotate(-90_deg * yMove / window.getHeight(),
-90_deg * xMove / window.getWidth());
});
/////////////
// Overlay //
/////////////
Raz::OverlayWindow& overlay = window.getOverlay().addWindow("Midgard", Raz::Vec2f(-1.f));
overlay.addLabel("Press WASD to fly the camera around,");
overlay.addLabel("Space/V to go up/down,");
overlay.addLabel("& Shift to move faster.");
overlay.addLabel("Hold the right mouse button to rotate the camera.");
overlay.addSeparator();
#if !defined(USE_OPENGL_ES)
Raz::OverlayTexture& dynamicNoiseTexture = overlay.addTexture(dynamicTerrain.getNoiseMap(), 125, 125);
Raz::OverlayTexture& dynamicColorTexture = overlay.addTexture(dynamicTerrain.getColorMap(), 125, 125);
Raz::OverlayTexture& dynamicSlopeTexture = overlay.addTexture(dynamicTerrain.getSlopeMap(), 125, 125);
#endif
Raz::Texture2D colorTexture(colorMap, false);
Raz::Texture2D normalTexture(normalMap, false);
Raz::Texture2D slopeTexture(slopeMap, false);
[[maybe_unused]] Raz::OverlayTexture& staticColorTexture = overlay.addTexture(colorTexture, 125, 125);
[[maybe_unused]] Raz::OverlayTexture& staticNormalTexture = overlay.addTexture(normalTexture, 125, 125);
[[maybe_unused]] Raz::OverlayTexture& staticSlopeTexture = overlay.addTexture(slopeTexture, 125, 125);
overlay.addSeparator();
#if !defined(USE_OPENGL_ES)
Raz::OverlaySlider& dynamicNoiseMapFactorSlider = overlay.addSlider("Noise map factor", [&dynamicTerrain] (float value) {
dynamicTerrain.computeNoiseMap(value);
dynamicTerrain.computeColorMap();
dynamicTerrain.computeSlopeMap();
}, 0.001f, 0.1f, 0.01f);
Raz::OverlaySlider& dynamicMinTessLevelSlider = overlay.addSlider("Min tess. level", [&dynamicTerrain] (float value) {
dynamicTerrain.setMinTessellationLevel(value);
}, 0.001f, 64.f, 12.f);
Raz::OverlaySlider& dynamicHeightFactorSlider = overlay.addSlider("Height factor", [&dynamicTerrain] (float value) {
dynamicTerrain.setHeightFactor(value);
dynamicTerrain.computeSlopeMap();
}, 0.001f, 50.f, 30.f);
Raz::OverlaySlider& dynamicFlatnessSlider = overlay.addSlider("Flatness", [&dynamicTerrain] (float value) {
dynamicTerrain.setFlatness(value);
dynamicTerrain.computeSlopeMap();
}, 1.f, 10.f, 3.f);
#endif
[[maybe_unused]] Raz::OverlaySlider& staticHeightFactorSlider = overlay.addSlider("Height factor", [&staticTerrain, &normalTexture, &slopeTexture] (float value) {
staticTerrain.setHeightFactor(value);
normalTexture.load(staticTerrain.computeNormalMap());
slopeTexture.load(staticTerrain.computeSlopeMap());
}, 0.001f, 50.f, 30.f);
[[maybe_unused]] Raz::OverlaySlider& staticFlatnessSlider = overlay.addSlider("Flatness", [&staticTerrain, &normalTexture, &slopeTexture] (float value) {
staticTerrain.setFlatness(value);
normalTexture.load(staticTerrain.computeNormalMap());
slopeTexture.load(staticTerrain.computeSlopeMap());
}, 1.f, 10.f, 3.f);
overlay.addSlider("Fog density", [&fogPass] (float value) {
fogPass.getProgram().setAttribute(value, "uniFogDensity");
fogPass.getProgram().sendAttributes();
}, 0.f, 1.f, 0.1f);
overlay.addSeparator();
#if !defined(USE_OPENGL_ES)
overlay.addCheckbox("Dynamic terrain", [&] () noexcept {
dynamicTerrainEntity.enable();
dynamicNoiseTexture.enable();
dynamicColorTexture.enable();
dynamicSlopeTexture.enable();
dynamicNoiseMapFactorSlider.enable();
dynamicMinTessLevelSlider.enable();
dynamicHeightFactorSlider.enable();
dynamicFlatnessSlider.enable();
staticTerrainEntity.disable();
staticColorTexture.disable();
staticNormalTexture.disable();
staticSlopeTexture.disable();
staticHeightFactorSlider.disable();
staticFlatnessSlider.disable();
}, [&] () noexcept {
staticTerrainEntity.enable();
staticColorTexture.enable();
staticNormalTexture.enable();
staticSlopeTexture.enable();
staticHeightFactorSlider.enable();
staticFlatnessSlider.enable();
dynamicTerrainEntity.disable();
dynamicNoiseTexture.disable();
dynamicColorTexture.disable();
dynamicSlopeTexture.disable();
dynamicNoiseMapFactorSlider.disable();
dynamicMinTessLevelSlider.disable();
dynamicHeightFactorSlider.disable();
dynamicFlatnessSlider.disable();
}, true);
// Disabling all static elements at first, since we want the dynamic terrain to be used by default
staticTerrainEntity.disable();
staticColorTexture.disable();
staticNormalTexture.disable();
staticSlopeTexture.disable();
staticHeightFactorSlider.disable();
staticFlatnessSlider.disable();
#endif
overlay.addSeparator();
overlay.addFrameTime("Frame time: %.3f ms/frame");
overlay.addFpsCounter("FPS: %.1f");
//////////////////////////
// Starting application //
//////////////////////////
app.run();
} catch (const std::exception& exception) {
Raz::Logger::error(exception.what());
}
return EXIT_SUCCESS;
}