diff options
Diffstat (limited to 'src/glwidget.cpp')
| -rwxr-xr-x | src/glwidget.cpp | 136 |
1 files changed, 135 insertions, 1 deletions
diff --git a/src/glwidget.cpp b/src/glwidget.cpp index 8fdd549..8ab2115 100755 --- a/src/glwidget.cpp +++ b/src/glwidget.cpp @@ -3,6 +3,9 @@ #include <QApplication> #include <QKeyEvent> #include <iostream> +#define STB_IMAGE_IMPLEMENTATION +#include "stb/stb_image.h" + #define SPEED 1.5 #define ROTATE_SPEED 0.0025 @@ -117,6 +120,9 @@ void GLWidget::initializeGL() // END INITIALIZE TEXTURE STUFF + // initialize texture + m_texture0 = loadTextureFromFile("/Users/jesswan/Desktop/cs2240/ocean-simulation/resources/images/hello.png").textureID; + // Initialize ARAP, and get parameters needed to decide the camera position, etc Vector3f coeffMin, coeffMax; m_arap.init(coeffMin, coeffMax); @@ -135,7 +141,8 @@ void GLWidget::initializeGL() // Note for maintainers: Z-up float fovY = 120; - float nearPlane = 0.0001f; +// float nearPlane = 0.0001f; + float nearPlane = 0.01; float farPlane = 3 * extentLength; // Initialize camera with a reasonable transform @@ -148,6 +155,18 @@ void GLWidget::initializeGL() m_deltaTimeProvider.start(); m_intervalTimer.start(1000 / 60); + //m_arap.initGroundPlane(":resources/images/kitty.png", 2, m_defaultShader); + + //INIT FBO + // m_devicePixelRatio = this->devicePixelRatio(); + + // m_defaultFBO = 2; + // m_screen_width = size().width() * m_devicePixelRatio; + // m_screen_height = size().height() * m_devicePixelRatio; + // m_fbo_width = m_screen_width; + // m_fbo_height = m_screen_height; + + // initFullScreenQuad(); } //void GLWidget::paintTexture(GLuint texture, bool filtered){ @@ -198,6 +217,121 @@ void GLWidget::paintGL() //// m_pointShader->unbind(); } +void GLWidget::paintTexture(GLuint texture, bool postProcessOn){ + m_defaultShader->bind(); + + // Task 32: Set your bool uniform on whether or not to filter the texture drawn + glBindVertexArray(m_fullscreen_vao); + // Task 10: Bind "texture" to slot 0 + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, texture); + + glDrawArrays(GL_TRIANGLES, 0, 6); + glBindTexture(GL_TEXTURE_2D, 0); + glBindVertexArray(0); + m_defaultShader->unbind(); +} + +void GLWidget::initFullScreenQuad(){ + // Generate and bind a VBO and a VAO for a fullscreen quad + glGenBuffers(1, &m_fullscreen_vbo); + glBindBuffer(GL_ARRAY_BUFFER, m_fullscreen_vbo); + glBufferData(GL_ARRAY_BUFFER, fullscreen_quad_data.size()*sizeof(GLfloat), fullscreen_quad_data.data(), GL_STATIC_DRAW); + glGenVertexArrays(1, &m_fullscreen_vao); + glBindVertexArray(m_fullscreen_vao); + + // Task 14: modify the code below to add a second attribute to the vertex attribute array + glEnableVertexAttribArray(0); + glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), reinterpret_cast<void *>(0*sizeof(GLfloat))); + + glEnableVertexAttribArray(1); + glVertexAttribPointer(3, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), reinterpret_cast<void *>(3*sizeof(GLfloat))); + + // Unbind the fullscreen quad's VBO and VAO + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindVertexArray(0); + + makeFBO(); +} + +void GLWidget::makeFBO(){ + // Task 19: Generate and bind an empty texture, set its min/mag filter interpolation, then unbind + glGenTextures(1, &m_fbo_texture); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, m_fbo_texture); + + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, m_fbo_width, m_fbo_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); + + // Set min and mag filters' interpolation mode to linear + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + glBindTexture(GL_TEXTURE_2D, 0); + + // Task 20: Generate and bind a renderbuffer of the right size, set its format, then unbind + glGenRenderbuffers(1, &m_fbo_renderbuffer); + glBindRenderbuffer(GL_RENDERBUFFER, m_fbo_renderbuffer); + glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, m_fbo_width, m_fbo_height); + glBindRenderbuffer(GL_RENDERBUFFER, 0); + + // Task 18: Generate and bind an FBO + glGenFramebuffers(1, &m_fbo); + glBindFramebuffer(GL_FRAMEBUFFER, m_fbo); + + // Task 21: Add our texture as a color attachment, and our renderbuffer as a depth+stencil attachment, to our FBO + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_fbo_texture, 0); + glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_fbo_renderbuffer); + + // Task 22: Unbind the FBO + glBindFramebuffer(GL_FRAMEBUFFER, m_defaultFBO); + +} + +TextureData GLWidget::loadTextureFromFile(const char *path) +{ + std::string filename = std::string(path); + + GLuint textureID; + glGenTextures(1, &textureID); + + int width, height, nrComponents; + stbi_set_flip_vertically_on_load(true); + unsigned char *data = stbi_load(filename.c_str(), &width, &height, &nrComponents, 0); + stbi_set_flip_vertically_on_load(false); + if (data) + { + GLenum format; + if (nrComponents == 1) + format = GL_RED; + else if (nrComponents == 3) + format = GL_RGB; + else if (nrComponents == 4) + format = GL_RGBA; + + glBindTexture(GL_TEXTURE_2D, textureID); + glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, data); + glGenerateMipmap(GL_TEXTURE_2D); + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + stbi_image_free(data); + } + else + { + std::cout << "Texture failed to load at path: " << path << std::endl; + stbi_image_free(data); + } + + TextureData newtex; + newtex.textureID = textureID; + newtex.height = height; + newtex.width = width; + return newtex; +} + void GLWidget::resizeGL(int w, int h) { glViewport(0, 0, w, h); |