X-Git-Url: http://git.lukelau.me/?p=opengl.git;a=blobdiff_plain;f=main.cpp;h=a82fc962f53e57ccf5a461348b245aa3887c9564;hp=635e182dedd1ab047252afc38640c91dfb30b522;hb=HEAD;hpb=be8759aec179d6d7bed58732134673870c596b4f diff --git a/main.cpp b/main.cpp index 635e182..7054e7a 100644 --- a/main.cpp +++ b/main.cpp @@ -3,9 +3,9 @@ #include #include #include +#include #ifdef __APPLE__ #include -#include "cocoa.h" #else #include #endif @@ -14,54 +14,76 @@ #include #include #include +#include +#include +#include #include "model.hpp" #include "program.hpp" #include "skybox.hpp" #include "image.hpp" +#include "util.hpp" +#include "ik.hpp" +#include "blendshapes.hpp" +#include "ui.hpp" #pragma clang diagnostic ignored "-Wdeprecated-declarations" using namespace std; -GLuint lightVao; +GLuint lightVao, cursorVao; +GLuint cursorNumIndices; -Program *textureProg, *plainProg, *reflectProg, *pbrProg; +Program *textureProg, *plainProg, *reflectProg, *pbrProg, *cursorProg; + +ControlWindow controlWindow; std::vector skyboxes; int activeSkybox = 0; -Model *chest, *mirrorCube, *pbr; +Assimp::Importer importer; // Need to keep this around, otherwise stuff disappears! +Model *sceneModel; -glm::vec3 camPos = glm::vec3(0.0f, 0.0f, -5.f); -glm::vec3 camFront = glm::vec3(0.0f, 0.0f, 1.0f); -glm::vec3 camUp = glm::vec3(0.0f, 1.0f, 0.0f); +glm::vec3 camPos = {0, 0, -5}, camFront = {0, 0, 1}, camUp = {0, 1, 0}; +float fov = glm::radians(30.f), znear = 0.01f, zfar = 10000.f; float yaw = 1.57, pitch = 0; +Model *targetModel; // The model that the selection is happening on +Model::VertexLookup closestVertex; +// How close a vertex needs to be to the cursor before it is "over" +const float closestVertexThreshold = 0.5; + +std::map manipulators; +VertIdx curManipulator = {-1,-1}; + +BlendshapeModel bsModel; +bool playBlendshapeAnim = false; + struct Light { - glm::vec3 pos; + glm::mat4 trans; glm::vec3 color; }; -std::vector lights = { - { glm::vec3(0, 0, 3), glm::vec3(1) }, - { glm::vec3(0, 3, 0), glm::vec3(1) }, - { glm::vec3(3, 0, 0), glm::vec3(1) }, - { glm::vec3(3, 0, 0), glm::vec3(1) } -}; +std::vector lights; -int activeLight = 0; +bool discoLights = false; int windowWidth = 800, windowHeight = 600; +enum Mode { + Default, + Blendshapes +}; +Mode curMode; + float aspect() { return (float)windowWidth / (float)windowHeight; } -glm::mat4 projMat() { - return glm::perspective(glm::radians(45.f), aspect(), 0.01f, 10000.f); +inline glm::mat4 projMat() { + return glm::perspective(fov, aspect(), znear, zfar); } -glm::mat4 viewMat() { +inline glm::mat4 viewMat() { return glm::lookAt(camPos, camPos + camFront, camUp); } @@ -89,21 +111,65 @@ void setLightColorAndPos(GLuint progId, glm::vec3 lightPos, glm::vec4 lightColor glUniform3fv(viewPosLoc, 1, glm::value_ptr(camPos)); } -void drawLight(Light &light) { - glUseProgram(plainProg->progId); - glBindVertexArray(lightVao); - setProjectionAndViewUniforms(plainProg->progId); - glm::mat4 model = glm::translate(glm::mat4(1.f), light.pos); - model = glm::scale(model, glm::vec3(0.2)); - GLuint modelLoc = glGetUniformLocation(plainProg->progId, "model"); +void drawPlainProg(Program *p, GLuint vao, glm::mat4 trans, glm::vec3 color) { + glUseProgram(p->progId); + glBindVertexArray(vao); + setProjectionAndViewUniforms(p->progId); + glm::mat4 model = glm::scale(trans, glm::vec3(0.3)); + GLuint modelLoc = glGetUniformLocation(p->progId, "model"); glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model)); - GLuint colorLoc = glGetUniformLocation(plainProg->progId, "color"); - glUniform4fv(colorLoc, 1, glm::value_ptr(light.color)); + GLuint colorLoc = glGetUniformLocation(p->progId, "color"); + glUniform4fv(colorLoc, 1, glm::value_ptr(color)); glDrawArrays(GL_TRIANGLES, 0, 36); } +void drawLight(Light &light) { + drawPlainProg(plainProg, lightVao, light.trans, light.color); +} + +int findNodeTrans(const struct aiNode *n, const struct aiString name, glm::mat4 *dest) { + if (strcmp(n->mName.data, name.data) == 0) { + *dest = aiMatrixToMat4(n->mTransformation); + return 0; + } + for (int i = 0; i < n->mNumChildren; i++) { + if (findNodeTrans(n->mChildren[i], name, dest) == 0) { + glm::mat4 t = aiMatrixToMat4(n->mTransformation); + *dest = t * *dest; + return 0; + } + } + return 1; +} + +glm::mat4 worldSpaceToModelSpace(aiNode *node, glm::mat4 m) { + aiNode *parent = node; + glm::mat4 res = m; + std::vector trans; + while (parent != nullptr) { + /* res = res * glm::inverse(aiMatrixToMat4(parent->mTransformation)); */ + trans.push_back(glm::inverse(aiMatrixToMat4(parent->mTransformation))); + parent = parent->mParent; + } + while (!trans.empty()) { res = trans.back() * res; trans.pop_back(); } + return res; +} + +void drawCursor(glm::vec3 pos, glm::vec3 color, float scale = 1) { + glUseProgram(cursorProg->progId); + glBindVertexArray(cursorVao); + setProjectionAndViewUniforms(cursorProg->progId); + glm::mat4 model = glm::scale(glm::translate(glm::mat4(1), pos), glm::vec3(scale * 0.4)); + GLuint modelLoc = glGetUniformLocation(cursorProg->progId, "model"); + glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model)); + + GLuint colorLoc = glGetUniformLocation(cursorProg->progId, "color"); + glUniform4fv(colorLoc, 1, glm::value_ptr(color)); + + glDrawElements(GL_TRIANGLES, cursorNumIndices, GL_UNSIGNED_INT, 0); +} void display() { glClearColor(0.5, 0.5, 0.5, 1); @@ -112,30 +178,89 @@ void display() { float d = (float)glutGet(GLUT_ELAPSED_TIME) * 0.001f; + glUseProgram(getUtilProg()->progId); + setProjectionAndViewUniforms(getUtilProg()->progId); + glUseProgram(pbrProg->progId); setProjectionAndViewUniforms(pbrProg->progId); - glm::vec3 lightPositions[4], lightColors[4]; - for (int i = 0; i < 4; i++) { - lightPositions[i] = lights[i].pos; + size_t numLights = lights.size() + (discoLights ? 3 : 0); + glm::vec3 lightPositions[numLights], lightColors[numLights]; + for (int i = 0; i < lights.size(); i++) { + lightPositions[i] = glm::vec3(lights[i].trans[3]); lightColors[i] = lights[i].color; } - glUniform3fv(glGetUniformLocation(pbrProg->progId, "lightPositions"), 4, glm::value_ptr(lightPositions[0])); - glUniform3fv(glGetUniformLocation(pbrProg->progId, "lightColors"), 4, glm::value_ptr(lightColors[0])); + if (discoLights) { + for (int i = numLights - 3; i < numLights; i++) { + auto m = glm::translate(glm::mat4(1.f), glm::vec3(-2.5, 0, 0)); + m = glm::rotate(m, glm::radians(d * 100 + i * 30), glm::vec3(1, 0, 0)); + m = glm::rotate(m, glm::radians(d * 100 + i * 30), glm::vec3(0, 1, 0)); + m = glm::rotate(m, glm::radians(d * 100 + i * 30), glm::vec3(0, 0, 1)); + lightPositions[i] = glm::vec3(m * glm::vec4(5, 0, 0, 1)); + lightColors[i] = glm::vec3(0.2); + if (i % 3 == 0) lightColors[i].x = sin(d); + if (i % 3 == 1) lightColors[i].y = cos(d * 3); + if (i % 3 == 2) lightColors[i].z = cos(d); + } + } + + glUniform1ui(glGetUniformLocation(pbrProg->progId, "numLights"), numLights); + glUniform3fv(glGetUniformLocation(pbrProg->progId, "lightPositions"), numLights, glm::value_ptr(lightPositions[0])); + glUniform3fv(glGetUniformLocation(pbrProg->progId, "lightColors"), numLights, glm::value_ptr(lightColors[0])); + +#ifdef COWEDBOY_IK + { + glm::vec3 targetPos(sin(d) * 2 + 3, -2, 1); + Light targetLight = { glm::translate(glm::mat4(1), targetPos), {0.5, 1, 1} }; + drawLight(targetLight); + inverseKinematics(*sceneModel->find("Shoulder.L"), *sceneModel->find("Finger.L"), targetPos); + + targetPos = { sin(d * 2) * 2 - 5, 2.5, 0 }; + targetLight = { glm::translate(glm::mat4(1), targetPos), {1, 1, 0.5} }; + drawLight(targetLight); + inverseKinematics(*sceneModel->find("Shoulder.R"), *sceneModel->find("Finger.R"), targetPos); + } +#endif + + if (curMode == Default) + sceneModel->draw(skyboxes[activeSkybox], d * 1000); + + if (curMode == Blendshapes) { + if (closestVertex.distance < closestVertexThreshold) + drawCursor(closestVertex.pos, {0.5,0,1}, 0.9); + + for (auto v: manipulators) { + glm::vec3 color = { 0.4, 1, 0 }; + if (closestVertex.meshIdx == v.first.first && + closestVertex.vertIdx == v.first.second) + color = {1, 0, 0}; + drawCursor(v.second, color); - pbr->draw(skyboxes[activeSkybox], d * 1000); + glm::vec3 origVertex = aiVector3DToVec3(bsModel.model->meshes[v.first.first].ai.mVertices[v.first.second]); + drawCursor(origVertex, {0,0,1}, 0.7); + } + + bsModel.model->draw(skyboxes[activeSkybox], d * 1000); + } for (Light &light: lights) drawLight(light); + // TODO: restore + /* if (discoLights) { */ + /* for (int i = numLights - 3; i < numLights; i++) { */ + /* Light l = { lightPositions[i], lightColors[i] }; */ + /* drawLight(l); */ + /* } */ + /* } */ + skyboxes[activeSkybox].draw(projMat(), viewMat()); glutSwapBuffers(); } -void setupLightBuffers(GLuint progId) { - auto vertices = cube(); - GLuint verticesSize = 36 * 3 * sizeof(GLfloat); +void setupPlainBuffers(GLuint progId, std::vector vertices) { + GLuint verticesSize = vertices.size() * sizeof(glm::vec3); glGenVertexArrays(1, &lightVao); GLuint vbo; @@ -149,44 +274,174 @@ void setupLightBuffers(GLuint progId) { glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, 0, 0); } +GLuint setupBuffersWithIndices(GLuint progId, GLuint vao, + std::vector vertices, + std::vector indices) { + GLuint vbos[2]; + glBindVertexArray(vao); + glGenBuffers(2, vbos); + + int verticesSize = vertices.size() * sizeof(glm::vec3); + // positions + glBindBuffer(GL_ARRAY_BUFFER, vbos[0]); + glBufferData(GL_ARRAY_BUFFER, verticesSize, NULL, GL_STATIC_DRAW); + glBufferSubData(GL_ARRAY_BUFFER, 0, verticesSize, + glm::value_ptr(vertices[0])); + + GLuint posLoc = glGetAttribLocation(progId, "vPosition"); + glEnableVertexAttribArray(posLoc); + glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, 0, 0); + + // indices + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbos[1]); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(GLuint), &indices[0], GL_STATIC_DRAW); + + return indices.size(); +} + +bool needToCalculateClosestVertex = false; +bool needToInterpolateBlendshapes = false; + +class Delegate : public ControlWindowDelegate { + public: + + virtual void weightChanged(int blendshape, float weight) { + bsModel.blendshapes[blendshape].weight = weight; + needToInterpolateBlendshapes = true; + } + + virtual void solveWeights(std::vector &newWeights) { + ::solveWeights(&bsModel, manipulators); + for (int i = 0; i < newWeights.size(); i++) + newWeights[i] = bsModel.blendshapes[i].weight; + needToInterpolateBlendshapes = true; + } + + virtual void resetManipulators() { + manipulators.clear(); + curManipulator = { -1, -1 }; + } + + virtual void playbackChanged(bool playing) { + playBlendshapeAnim = playing; + } +}; + +Delegate cwDelegate; + + void init() { + initUtilProg(); + plainProg = new Program("plainvertex.glsl", "plainfrag.glsl"); glUseProgram(plainProg->progId); - setupLightBuffers(plainProg->progId); + setupPlainBuffers(plainProg->progId, cube()); plainProg->validate(); + cursorProg = new Program("plainvertex.glsl", "plainfrag.glsl"); + glUseProgram(cursorProg->progId); + glGenVertexArrays(1, &cursorVao); + cursorNumIndices = setupBuffersWithIndices(cursorProg->progId, cursorVao, sphere(), sphereIndices()); + cursorProg->validate(); + skyboxes.push_back(Skybox(Image("skyboxes/loft/Newport_Loft_Ref.hdr"))); - skyboxes.push_back(Skybox(Image("skyboxes/monumentValley/Road_to_MonumentValley_Ref.hdr"))); - skyboxes.push_back(Skybox(Image("skyboxes/factory/Factory_Catwalk_2k.hdr"))); + skyboxes.push_back(Skybox(Image("skyboxes/wooden_lounge_8k.hdr"))); + skyboxes.push_back(Skybox(Image("skyboxes/machine_shop_02_8k.hdr"))); + skyboxes.push_back(Skybox(Image("skyboxes/pink_sunrise_8k.hdr"))); pbrProg = new Program("pbrvert.glsl", "pbrfrag.glsl"); glUseProgram(pbrProg->progId); - pbr = new Model("models/newtonsCradle.gltf", *pbrProg); + + if (curMode == Default) { + const std::string scenePath = "models/cowedboy.glb"; + const aiScene *scene = importer.ReadFile( + scenePath, aiProcess_Triangulate | aiProcess_CalcTangentSpace | + aiProcess_GenNormals | aiProcess_FlipUVs); + if (!scene) { + std::cerr << importer.GetErrorString() << std::endl; + exit(1); + } + + if (scene->mNumCameras > 0) { + aiCamera *cam = scene->mCameras[0]; + glm::mat4 camTrans; + if (findNodeTrans(scene->mRootNode, cam->mName, &camTrans) != 0) + abort(); // there must be a node with the same name as camera + + camPos = {camTrans[3][0], camTrans[3][1], camTrans[3][2]}; + + glm::vec3 camLookAt = + glm::vec3(cam->mLookAt.x, cam->mLookAt.y, cam->mLookAt.z); + camFront = camLookAt - camPos; + + camUp = glm::vec3(cam->mUp.x, cam->mUp.y, cam->mUp.z); + + fov = cam->mHorizontalFOV; + // TODO: aspectRatio = cam->mAspect; + znear = cam->mClipPlaneNear; + zfar = cam->mClipPlaneFar; + } + + for (int i = 0; i < scene->mNumLights; i++) { + aiLight *light = scene->mLights[i]; + glm::mat4 trans; + findNodeTrans(scene->mRootNode, light->mName, &trans); + glm::vec3 col = {light->mColorAmbient.r, light->mColorAmbient.g, + light->mColorAmbient.b}; + Light l = {trans, col}; + lights.push_back(l); + } + + sceneModel = new Model(scene, *pbrProg); + } + + if (curMode == Blendshapes) { + loadBlendshapes("models/high-res-blendshapes/", *pbrProg, &bsModel); + targetModel = bsModel.model; + + size_t numBlends = bsModel.blendshapes.size(); + std::vector names(numBlends); + for (int i = 0; i < numBlends; i++) names[i] = bsModel.blendshapes[i].name; + controlWindow = createControlWindow(names, &cwDelegate); + + camPos = { 0, 18, 81 }; + camFront = { 0, 0, -1 }; + camUp = { 0, 1, 0 }; + zfar = 10000; + znear = 0.1f; + } glEnable(GL_DEPTH_TEST); glEnable(GL_CULL_FACE); // prevent edge artifacts in specular cubemaps glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS); - glViewport(0, 0, windowWidth, windowHeight); + glViewport(0, 0, windowWidth * 2, windowHeight * 2); } -bool* keyStates = new bool[256]; +bool keyStates[256] = {false}; void keyboard(unsigned char key, int x, int y) { keyStates[key] = true; if (key == 'z') activeSkybox = (activeSkybox + 1) % skyboxes.size(); - if (key == 'x') - activeLight = (activeLight + 1) % lights.size(); + if (key == 'c') + discoLights = !discoLights; } void keyboardUp(unsigned char key, int x, int y) { keyStates[key] = false; } +int mouseX, mouseY; + +/* #define ENABLE_MOVEMENT */ void timer(int _) { +#ifdef ENABLE_MOVEMENT float xSpeed = 0.f, ySpeed = 0.f, zSpeed = 0.f; + +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wchar-subscripts" if (keyStates['w']) zSpeed = 0.1f; if (keyStates['s']) @@ -199,17 +454,64 @@ void timer(int _) { ySpeed = 0.1f; if (keyStates['e']) ySpeed = -0.1f; - - if (keyStates['j']) lights[activeLight].pos.z += 0.1f; - if (keyStates['k']) lights[activeLight].pos.z -= 0.1f; - if (keyStates['h']) lights[activeLight].pos.x -= 0.1f; - if (keyStates['l']) lights[activeLight].pos.x += 0.1f; - if (keyStates['m']) lights[activeLight].pos.y -= 0.1f; - if (keyStates['n']) lights[activeLight].pos.y += 0.1f; +#pragma clang diagnostic pop camPos.x += xSpeed * sin(yaw) + zSpeed * cos(yaw); camPos.y += ySpeed; camPos.z += zSpeed * sin(yaw) - xSpeed * cos(yaw); +#endif + + if (curMode == Blendshapes) { + float xSpeed = 0, ySpeed = 0, zSpeed = 0; +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wchar-subscripts" + if (keyStates['w']) + zSpeed = 0.1f; + if (keyStates['s']) + zSpeed = -0.1f; + if (keyStates['a']) + xSpeed = 0.1f; + if (keyStates['d']) + xSpeed = -0.1f; + if (keyStates['q']) + ySpeed = 0.1f; + if (keyStates['e']) + ySpeed = -0.1f; +#pragma clang diagnostic pop + + if (playBlendshapeAnim) { + stepBlendshapeAnim(&bsModel); + needToInterpolateBlendshapes = true; + std::vector newWeights(bsModel.blendshapes.size()); + for (int i = 0; i < bsModel.blendshapes.size(); i++) + newWeights[i] = bsModel.blendshapes[i].weight; + updateWeights(&controlWindow, newWeights); + } + + if (curManipulator.first != -1 && curManipulator.second != -1) { + manipulators[curManipulator].x += xSpeed; + manipulators[curManipulator].y += ySpeed; + manipulators[curManipulator].z += zSpeed; + } + + if (needToInterpolateBlendshapes) { + interpolateBlendshapes(&bsModel); + needToInterpolateBlendshapes = false; + } + + if (needToCalculateClosestVertex) { + GLint vpArr[4]; glGetIntegerv(GL_VIEWPORT, vpArr); + glm::vec4 viewport(vpArr[0], vpArr[1], vpArr[2], vpArr[3]); + glm::vec3 selectedPos = glm::unProject(glm::vec3(mouseX * 2, viewport[3] - mouseY * 2, 1), // hidpi + viewMat(), + projMat(), + viewport); + + closestVertex = targetModel->closestVertex(targetModel->getRoot(), camPos, selectedPos); + needToCalculateClosestVertex = false; + } + } + glutPostRedisplay(); glutTimerFunc(16, timer, 0); } @@ -223,6 +525,35 @@ void motion(int x, int y) { prevMouseY = y; firstMouse = false; } + float dx = x - prevMouseX, dy = y - prevMouseY; + prevMouseX = x; prevMouseY = y; + if (curMode == Blendshapes) { + if (closestVertex.distance > closestVertexThreshold) { + const glm::vec3 origin(0,18,0); + const float sensitivity = 0.003f; + auto camMat = glm::translate(glm::mat4(1), origin + camPos); + auto rotation = glm::rotate(glm::rotate(glm::mat4(1), -dx * sensitivity, {0, 1, 0}), + -dy * sensitivity, {1, 0, 0}); + auto rotAroundOrig = camMat * rotation * glm::translate(glm::mat4(1), origin - camPos); + camPos = rotAroundOrig * glm::vec4(camPos, 0); + camFront = origin - camPos; // face center + } + needToCalculateClosestVertex = true; + } +} + +void passiveMotion(int x, int y) { + if (firstMouse) { + prevMouseX = x; + prevMouseY = y; + firstMouse = false; + } + mouseX = x; mouseY = y; + prevMouseX = x; + prevMouseY = y; +#ifdef ENABLE_MOVEMENT + + int dx = x - prevMouseX, dy = y - prevMouseY; prevMouseX = x; @@ -243,11 +574,28 @@ void motion(int x, int y) { } else { camUp = glm::vec3(0, 1, 0); } +#endif + if (curMode == Blendshapes) + needToCalculateClosestVertex = true; } void mouse(int button, int state, int x, int y) { + if (isPanelFocused(controlWindow)) + return; + + if (button == GLUT_LEFT_BUTTON && state == GLUT_UP) { + if (closestVertex.distance < closestVertexThreshold) { + VertIdx idx = { closestVertex.meshIdx, closestVertex.vertIdx }; + if (manipulators.count(idx) <= 0) + manipulators[idx] = closestVertex.pos; + curManipulator = idx; + } + } + +#ifdef ENABLE_MOVEMENT if (button == GLUT_LEFT_BUTTON && state == GLUT_UP) firstMouse = true; +#endif } void reshape(int newWidth, int newHeight) { @@ -258,19 +606,21 @@ int main(int argc, char** argv) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_DEPTH|GLUT_DOUBLE|GLUT_RGB|GLUT_3_2_CORE_PROFILE); glutInitWindowSize(windowWidth, windowHeight); - int win = glutCreateWindow("Physically Based Rendering"); - makeRetina(); + glutCreateWindow("Physically Based Rendering"); glutDisplayFunc(display); glutReshapeFunc(reshape); glewInit(); + // TODO: parse argv + curMode = Blendshapes; init(); glutKeyboardFunc(keyboard); glutKeyboardUpFunc(keyboardUp); glutTimerFunc(16, timer, 0); glutMotionFunc(motion); + glutPassiveMotionFunc(passiveMotion); glutMouseFunc(mouse); glutMainLoop();