mirror of
https://github.com/OpenSpace/OpenSpace.git
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554 lines
23 KiB
C++
554 lines
23 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2016 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/globebrowsing/rendering/patchrenderer.h>
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#include <modules/globebrowsing/meshes/clipmapgrid.h>
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// open space includes
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#include <openspace/engine/wrapper/windowwrapper.h>
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#include <openspace/engine/openspaceengine.h>
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#include <openspace/rendering/renderengine.h>
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// ghoul includes
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#include <ghoul/misc/assert.h>
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#include <ghoul/opengl/texture.h>
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#include <ghoul/opengl/textureunit.h>
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#define _USE_MATH_DEFINES
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#include <math.h>
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namespace {
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const std::string _loggerCat = "PatchRenderer";
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const std::string keyFrame = "Frame";
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const std::string keyGeometry = "Geometry";
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const std::string keyShading = "PerformShading";
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const std::string keyBody = "Body";
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}
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namespace openspace {
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//////////////////////////////////////////////////////////////////////////////////////
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// PATCH RENDERER //
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//////////////////////////////////////////////////////////////////////////////////////
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PatchRenderer::PatchRenderer(shared_ptr<TileProviderManager> tileProviderManager)
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: _tileProviderManager(tileProviderManager)
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{
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}
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PatchRenderer::~PatchRenderer() {
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if (_programObjectGlobalRendering) {
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RenderEngine& renderEngine = OsEng.renderEngine();
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renderEngine.removeRenderProgram(_programObjectGlobalRendering);
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_programObjectGlobalRendering = nullptr;
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}
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}
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void PatchRenderer::update() {
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auto heightMapProviders = _tileProviderManager->heightMapProviders();
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for (auto iter = heightMapProviders.begin(); iter != heightMapProviders.end(); iter++)
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{
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iter->second->prerender();
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}
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auto colorTextureProviders = _tileProviderManager->colorTextureProviders();
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for (auto iter = colorTextureProviders.begin(); iter != colorTextureProviders.end(); iter++)
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{
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iter->second->prerender();
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}
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}
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//////////////////////////////////////////////////////////////////////////////////////
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// LATLON PATCH RENDERER //
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//////////////////////////////////////////////////////////////////////////////////////
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LatLonPatchRenderer::LatLonPatchRenderer(
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shared_ptr<Grid> grid,
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shared_ptr<TileProviderManager> tileProviderManager)
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: PatchRenderer(tileProviderManager)
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, _grid(grid)
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{
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_programObjectGlobalRendering = OsEng.renderEngine().buildRenderProgram(
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"GlobalChunkedLodPatch",
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"${MODULE_GLOBEBROWSING}/shaders/globalchunkedlodpatch_vs.glsl",
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"${MODULE_GLOBEBROWSING}/shaders/globalchunkedlodpatch_fs.glsl");
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ghoul_assert(_programObjectGlobalRendering != nullptr, "Failed to initialize programObject!");
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using IgnoreError = ghoul::opengl::ProgramObject::IgnoreError;
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_programObjectGlobalRendering->setIgnoreSubroutineUniformLocationError(IgnoreError::Yes);
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}
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void LatLonPatchRenderer::renderPatch(
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const GeodeticPatch& patch,
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const RenderData& data,
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const Ellipsoid& ellipsoid,
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const GeodeticTileIndex& tileIndex)
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{
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using namespace glm;
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// PATCH DID NOT MATCH THE TILEINDEX SO I CREATED A NEW PATCH FROM THE INDEX
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GeodeticPatch newPatch = patch;//GeodeticPatch(tileIndex);
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//GeodeticTileIndex tmpTileIndex = _tileSet.getTileIndex(patch);
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// TODO : Model transform should be fetched as a matrix directly.
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mat4 modelTransform = translate(mat4(1), data.position.vec3());
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mat4 viewTransform = data.camera.combinedViewMatrix();
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mat4 modelViewProjectionTransform = data.camera.projectionMatrix()
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* viewTransform * modelTransform;
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// activate shader
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_programObjectGlobalRendering->activate();
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// Get the textures that should be used for rendering
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std::shared_ptr<ghoul::opengl::Texture> tile00;
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bool usingTile = true;
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// For now just pick the first one from height maps
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auto heightMapProviders = _tileProviderManager->heightMapProviders();
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auto tileProviderHeight = heightMapProviders.begin()->second;
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tile00 = tileProviderHeight->getTile(tileIndex);
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if (tile00 == nullptr) {
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tile00 = tileProviderHeight->getTemporaryTexture();
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}
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// Bind and use the texture
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ghoul::opengl::TextureUnit texUnitHeight;
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texUnitHeight.activate();
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tile00->bind();
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_programObjectGlobalRendering->setUniform("textureSamplerHeight", texUnitHeight);
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// Pick the first color texture
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auto colorTextureProviders = _tileProviderManager->colorTextureProviders();
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auto tileProviderColor = colorTextureProviders.begin()->second;
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tile00 = tileProviderColor->getTile(tileIndex);
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if (tile00 == nullptr) {
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tile00 = tileProviderColor->getTemporaryTexture();
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}
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// Now we use the same shader as for clipmap rendering so this uv transform is needed
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glm::mat3 uvTransformColor = glm::mat3(1);
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// Bind and use the texture
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ghoul::opengl::TextureUnit texUnitColor;
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texUnitColor.activate();
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tile00->bind();
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_programObjectGlobalRendering->setUniform("textureSamplerColor", texUnitColor);
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Geodetic2 swCorner = newPatch.southWestCorner();
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_programObjectGlobalRendering->setUniform("modelViewProjectionTransform", modelViewProjectionTransform);
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_programObjectGlobalRendering->setUniform("minLatLon", vec2(swCorner.toLonLatVec2()));
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_programObjectGlobalRendering->setUniform("lonLatScalingFactor", vec2(newPatch.size().toLonLatVec2()));
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_programObjectGlobalRendering->setUniform("radiiSquared", vec3(ellipsoid.radiiSquared()));
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glCullFace(GL_BACK);
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// render
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_grid->geometry().drawUsingActiveProgram();
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// disable shader
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_programObjectGlobalRendering->deactivate();
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}
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//////////////////////////////////////////////////////////////////////////////////////
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// CLIPMAP PATCH RENDERER //
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//////////////////////////////////////////////////////////////////////////////////////
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ClipMapPatchRenderer::ClipMapPatchRenderer(
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shared_ptr<ClipMapGrid> grid,
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shared_ptr<TileProviderManager> tileProviderManager)
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: PatchRenderer(tileProviderManager)
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, _grid(grid)
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, _patchCoverageProvider(
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Geodetic2(M_PI * 2, M_PI * 2),
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Geodetic2(-M_PI -M_PI/2, -M_PI),
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10)
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{
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_programObjectGlobalRendering = OsEng.renderEngine().buildRenderProgram(
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"GlobalClipMapPatch",
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"${MODULE_GLOBEBROWSING}/shaders/globalclipmappatch_vs.glsl",
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"${MODULE_GLOBEBROWSING}/shaders/globalclipmappatch_fs.glsl");
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ghoul_assert(_programObjectGlobalRendering != nullptr, "Failed to initialize programObject!");
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_programObjectLocalRendering = OsEng.renderEngine().buildRenderProgram(
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"LocalClipMapPatch",
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"${MODULE_GLOBEBROWSING}/shaders/localclipmappatch_vs.glsl",
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"${MODULE_GLOBEBROWSING}/shaders/localclipmappatch_fs.glsl");
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ghoul_assert(_programObjectLocalRendering != nullptr, "Failed to initialize programObject!");
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using IgnoreError = ghoul::opengl::ProgramObject::IgnoreError;
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_programObjectGlobalRendering->setIgnoreSubroutineUniformLocationError(IgnoreError::Yes);
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_programObjectLocalRendering->setIgnoreSubroutineUniformLocationError(IgnoreError::Yes);
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}
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void ClipMapPatchRenderer::renderPatch(
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const Geodetic2& patchSize,
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const RenderData& data,
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const Ellipsoid& ellipsoid)
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{
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if (max(patchSize.lat, patchSize.lon) > M_PI / 200) {
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renderPatchGlobally(patchSize, data, ellipsoid);
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}
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else {
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renderPatchLocally(patchSize, data, ellipsoid);
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}
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}
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void ClipMapPatchRenderer::renderPatchGlobally(
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const Geodetic2& patchSize,
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const RenderData& data,
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const Ellipsoid& ellipsoid)
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{
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// activate shader
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_programObjectGlobalRendering->activate();
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using namespace glm;
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mat4 viewTransform = data.camera.combinedViewMatrix();
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// TODO : Model transform should be fetched as a matrix directly.
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mat4 modelTransform = translate(mat4(1), data.position.vec3());
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// Snap patch position
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int segmentsPerPatch = _grid->segments();
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Geodetic2 stepSize = Geodetic2(
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patchSize.lat / segmentsPerPatch,
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patchSize.lon / segmentsPerPatch);
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ivec2 patchesToCoverGlobe = ivec2(
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M_PI / patchSize.lat + 0.5,
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M_PI * 2 / patchSize.lon + 0.5);
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Geodetic2 cameraPosLatLon = ellipsoid.cartesianToGeodetic2(data.camera.position().dvec3());
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ivec2 intSnapCoord = ivec2(
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cameraPosLatLon.lat / (M_PI * 2) * segmentsPerPatch * patchesToCoverGlobe.y,
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cameraPosLatLon.lon / (M_PI)* segmentsPerPatch * patchesToCoverGlobe.x);
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Geodetic2 newPatchCenter = Geodetic2(
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stepSize.lat * intSnapCoord.x,
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stepSize.lon * intSnapCoord.y);
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GeodeticPatch newPatch(
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newPatchCenter,
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Geodetic2(patchSize.lat / 2, patchSize.lon / 2));
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ivec2 contraction = ivec2(intSnapCoord.y % 2, intSnapCoord.x % 2);
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// For now just pick the first one from height maps
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auto heightMapProviders = _tileProviderManager->heightMapProviders();
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auto tileProviderHeight = heightMapProviders.begin()->second;
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PatchCoverage patchCoverage = _patchCoverageProvider.getCoverage(newPatch, tileProviderHeight);
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// Bind and use the texture
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ghoul::opengl::TextureUnit texUnitHeight00;
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texUnitHeight00.activate();
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patchCoverage.textureTransformPairs[0].first->bind(); // tile00
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_programObjectGlobalRendering->setUniform("textureSamplerHeight00", texUnitHeight00);
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ghoul::opengl::TextureUnit texUnitHeight10;
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texUnitHeight10.activate();
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patchCoverage.textureTransformPairs[1].first->bind(); // tile10
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_programObjectGlobalRendering->setUniform("textureSamplerHeight10", texUnitHeight10);
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ghoul::opengl::TextureUnit texUnitHeight01;
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texUnitHeight01.activate();
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patchCoverage.textureTransformPairs[2].first->bind(); // tile01
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_programObjectGlobalRendering->setUniform("textureSamplerHeight01", texUnitHeight01);
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ghoul::opengl::TextureUnit texUnitHeight11;
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texUnitHeight11.activate();
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patchCoverage.textureTransformPairs[3].first->bind(); // tile11
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_programObjectGlobalRendering->setUniform("textureSamplerHeight11", texUnitHeight11);
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_programObjectGlobalRendering->setUniform(
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"uvTransformPatchToTileHeight00",
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patchCoverage.textureTransformPairs[0].second);
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_programObjectGlobalRendering->setUniform(
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"uvTransformPatchToTileHeight10",
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patchCoverage.textureTransformPairs[1].second);
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_programObjectGlobalRendering->setUniform(
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"uvTransformPatchToTileHeight01",
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patchCoverage.textureTransformPairs[2].second);
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_programObjectGlobalRendering->setUniform(
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"uvTransformPatchToTileHeight11",
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patchCoverage.textureTransformPairs[3].second);
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// Pick the first color texture
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auto colorTextureProviders = _tileProviderManager->colorTextureProviders();
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auto tileProviderColor = colorTextureProviders.begin()->second;
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PatchCoverage patchCoverageColor = _patchCoverageProvider.getCoverage(newPatch, tileProviderColor);
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// Bind and use the texture
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ghoul::opengl::TextureUnit texUnitColor00;
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texUnitColor00.activate();
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patchCoverageColor.textureTransformPairs[0].first->bind(); // tile00
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_programObjectGlobalRendering->setUniform("textureSamplerColor00", texUnitColor00);
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ghoul::opengl::TextureUnit texUnitColor10;
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texUnitColor10.activate();
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patchCoverageColor.textureTransformPairs[1].first->bind(); // tile10
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_programObjectGlobalRendering->setUniform("textureSamplerColor10", texUnitColor10);
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ghoul::opengl::TextureUnit texUnitColor01;
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texUnitColor01.activate();
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patchCoverageColor.textureTransformPairs[2].first->bind(); // tile01
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_programObjectGlobalRendering->setUniform("textureSamplerColor01", texUnitColor01);
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ghoul::opengl::TextureUnit texUnitColor11;
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texUnitColor11.activate();
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patchCoverageColor.textureTransformPairs[3].first->bind(); // tile11
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_programObjectGlobalRendering->setUniform("textureSamplerColor11", texUnitColor11);
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_programObjectGlobalRendering->setUniform(
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"uvTransformPatchToTileColor00",
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patchCoverageColor.textureTransformPairs[0].second);
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_programObjectGlobalRendering->setUniform(
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"uvTransformPatchToTileColor10",
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patchCoverageColor.textureTransformPairs[1].second);
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_programObjectGlobalRendering->setUniform(
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"uvTransformPatchToTileColor01",
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patchCoverageColor.textureTransformPairs[2].second);
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_programObjectGlobalRendering->setUniform(
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"uvTransformPatchToTileColor11",
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patchCoverageColor.textureTransformPairs[3].second);
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_programObjectGlobalRendering->setUniform(
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"modelViewProjectionTransform",
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data.camera.projectionMatrix() * viewTransform * modelTransform);
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_programObjectGlobalRendering->setUniform("segmentsPerPatch", segmentsPerPatch);
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_programObjectGlobalRendering->setUniform("minLatLon", vec2(newPatch.southWestCorner().toLonLatVec2()));
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_programObjectGlobalRendering->setUniform("lonLatScalingFactor", vec2(patchSize.toLonLatVec2()));
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_programObjectGlobalRendering->setUniform("radiiSquared", vec3(ellipsoid.radiiSquared()));
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_programObjectGlobalRendering->setUniform("contraction", contraction);
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glCullFace(GL_BACK);
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// render
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_grid->geometry().drawUsingActiveProgram();
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// disable shader
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_programObjectGlobalRendering->deactivate();
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}
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void ClipMapPatchRenderer::renderPatchLocally(
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const Geodetic2& patchSize,
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const RenderData& data,
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const Ellipsoid& ellipsoid)
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{
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// activate shader
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_programObjectLocalRendering->activate();
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using namespace glm;
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mat4 viewTransform = data.camera.combinedViewMatrix();
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// TODO : Model transform should be fetched as a matrix directly.
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mat4 modelTransform = translate(mat4(1), data.position.vec3());
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mat4 modelViewTransform = viewTransform * modelTransform;
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// Snap patch position
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int segmentsPerPatch = _grid->segments();
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Geodetic2 stepSize = Geodetic2(
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patchSize.lat / segmentsPerPatch,
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patchSize.lon / segmentsPerPatch);
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ivec2 patchesToCoverGlobe = ivec2(
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M_PI / patchSize.lat + 0.5,
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M_PI * 2 / patchSize.lon + 0.5);
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Geodetic2 cameraPosLatLon = ellipsoid.cartesianToGeodetic2(data.camera.position().dvec3());
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ivec2 intSnapCoord = ivec2(
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cameraPosLatLon.lat / (M_PI * 2) * segmentsPerPatch * patchesToCoverGlobe.y,
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cameraPosLatLon.lon / (M_PI)* segmentsPerPatch * patchesToCoverGlobe.x);
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Geodetic2 newPatchCenter = Geodetic2(
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stepSize.lat * intSnapCoord.x,
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stepSize.lon * intSnapCoord.y);
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GeodeticPatch newPatch(
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newPatchCenter,
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Geodetic2(patchSize.lat / 2, patchSize.lon / 2));
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ivec2 contraction = ivec2(intSnapCoord.y % 2, intSnapCoord.x % 2);
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// Get global positions of the four control points
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Vec3 patchSw = ellipsoid.geodetic2ToCartesian(newPatch.southWestCorner());
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Vec3 patchSe = ellipsoid.geodetic2ToCartesian(newPatch.southEastCorner());
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Vec3 patchNw = ellipsoid.geodetic2ToCartesian(newPatch.northWestCorner());
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Vec3 patchNe = ellipsoid.geodetic2ToCartesian(newPatch.northEastCorner());
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// Transform all control points to camera space
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patchSw = Vec3(dmat4(modelViewTransform) * glm::dvec4(patchSw, 1));
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patchSe = Vec3(dmat4(modelViewTransform) * glm::dvec4(patchSe, 1));
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patchNw = Vec3(dmat4(modelViewTransform) * glm::dvec4(patchNw, 1));
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patchNe = Vec3(dmat4(modelViewTransform) * glm::dvec4(patchNe, 1));
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// Send control points to shader
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_programObjectLocalRendering->setUniform("p00", vec3(patchSw));
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_programObjectLocalRendering->setUniform("p10", vec3(patchSe));
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_programObjectLocalRendering->setUniform("p01", vec3(patchNw));
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_programObjectLocalRendering->setUniform("p11", vec3(patchNe));
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vec3 patchNormal = normalize(cross(patchSe - patchSw, patchNw - patchSw));
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_programObjectLocalRendering->setUniform("patchNormal", patchNormal);
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// For now just pick the first one from height maps
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auto heightMapProviders = _tileProviderManager->heightMapProviders();
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auto tileProviderHeight = heightMapProviders.begin()->second;
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PatchCoverage patchCoverage = _patchCoverageProvider.getCoverage(newPatch, tileProviderHeight);
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// Bind and use the texture
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ghoul::opengl::TextureUnit texUnitHeight00;
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texUnitHeight00.activate();
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patchCoverage.textureTransformPairs[0].first->bind(); // tile00
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_programObjectLocalRendering->setUniform("textureSamplerHeight00", texUnitHeight00);
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ghoul::opengl::TextureUnit texUnitHeight10;
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texUnitHeight10.activate();
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patchCoverage.textureTransformPairs[1].first->bind(); // tile10
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_programObjectLocalRendering->setUniform("textureSamplerHeight10", texUnitHeight10);
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ghoul::opengl::TextureUnit texUnitHeight01;
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texUnitHeight01.activate();
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patchCoverage.textureTransformPairs[2].first->bind(); // tile01
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_programObjectLocalRendering->setUniform("textureSamplerHeight01", texUnitHeight01);
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ghoul::opengl::TextureUnit texUnitHeight11;
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texUnitHeight11.activate();
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patchCoverage.textureTransformPairs[3].first->bind(); // tile11
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_programObjectLocalRendering->setUniform("textureSamplerHeight11", texUnitHeight11);
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_programObjectLocalRendering->setUniform(
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"uvTransformPatchToTileHeight00",
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patchCoverage.textureTransformPairs[0].second);
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_programObjectLocalRendering->setUniform(
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"uvTransformPatchToTileHeight10",
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|
patchCoverage.textureTransformPairs[1].second);
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_programObjectLocalRendering->setUniform(
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|
"uvTransformPatchToTileHeight01",
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|
patchCoverage.textureTransformPairs[2].second);
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_programObjectLocalRendering->setUniform(
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|
"uvTransformPatchToTileHeight11",
|
|
patchCoverage.textureTransformPairs[3].second);
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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// Pick the first color texture
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auto colorTextureProviders = _tileProviderManager->colorTextureProviders();
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auto tileProviderColor = colorTextureProviders.begin()->second;
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PatchCoverage patchCoverageColor = _patchCoverageProvider.getCoverage(newPatch, tileProviderColor);
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|
|
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// Bind and use the texture
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|
ghoul::opengl::TextureUnit texUnitColor00;
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|
texUnitColor00.activate();
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patchCoverageColor.textureTransformPairs[0].first->bind(); // tile00
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|
_programObjectLocalRendering->setUniform("textureSamplerColor00", texUnitColor00);
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|
|
|
ghoul::opengl::TextureUnit texUnitColor10;
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|
texUnitColor10.activate();
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|
patchCoverageColor.textureTransformPairs[1].first->bind(); // tile10
|
|
_programObjectLocalRendering->setUniform("textureSamplerColor10", texUnitColor10);
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|
|
|
ghoul::opengl::TextureUnit texUnitColor01;
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|
texUnitColor01.activate();
|
|
patchCoverageColor.textureTransformPairs[2].first->bind(); // tile01
|
|
_programObjectLocalRendering->setUniform("textureSamplerColor01", texUnitColor01);
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|
|
|
ghoul::opengl::TextureUnit texUnitColor11;
|
|
texUnitColor11.activate();
|
|
patchCoverageColor.textureTransformPairs[3].first->bind(); // tile11
|
|
_programObjectLocalRendering->setUniform("textureSamplerColor11", texUnitColor11);
|
|
|
|
|
|
_programObjectLocalRendering->setUniform(
|
|
"uvTransformPatchToTileColor00",
|
|
patchCoverageColor.textureTransformPairs[0].second);
|
|
_programObjectLocalRendering->setUniform(
|
|
"uvTransformPatchToTileColor10",
|
|
patchCoverageColor.textureTransformPairs[1].second);
|
|
_programObjectLocalRendering->setUniform(
|
|
"uvTransformPatchToTileColor01",
|
|
patchCoverageColor.textureTransformPairs[2].second);
|
|
_programObjectLocalRendering->setUniform(
|
|
"uvTransformPatchToTileColor11",
|
|
patchCoverageColor.textureTransformPairs[3].second);
|
|
|
|
|
|
|
|
|
|
|
|
_programObjectLocalRendering->setUniform(
|
|
"projectionTransform",
|
|
data.camera.projectionMatrix());
|
|
_programObjectLocalRendering->setUniform("segmentsPerPatch", segmentsPerPatch);
|
|
_programObjectLocalRendering->setUniform("contraction", contraction);
|
|
|
|
glEnable(GL_DEPTH_TEST);
|
|
glEnable(GL_CULL_FACE);
|
|
glCullFace(GL_BACK);
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|
|
|
// render
|
|
_grid->geometry().drawUsingActiveProgram();
|
|
|
|
// disable shader
|
|
_programObjectLocalRendering->deactivate();
|
|
}
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|
|
|
} // namespace openspace
|