mirror of
https://github.com/bulletphysics/bullet3
synced 2024-12-13 13:20:07 +00:00
add GLFWOpenGLWindow and glad (replacement for glew)
This commit is contained in:
erwincoumans
parent
aaf403c805
commit
cadce37141
490
examples/OpenGLWindow/GLFWOpenGLWindow.cpp
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490
examples/OpenGLWindow/GLFWOpenGLWindow.cpp
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@ -0,0 +1,490 @@
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#ifdef B3_USE_GLFW
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#include "GLFWOpenGLWindow.h"
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#include <glad/glad.h>
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#include <GLFW/glfw3.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "LinearMath/btScalar.h"
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struct GLFWOpenGLWindowInternalData
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{
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bool m_requestedExit;
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bool m_hasCursorPos;
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bool m_altPressed;
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bool m_shiftPressed;
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bool m_ctrlPressed;
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float m_cursorXPos;
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float m_cursorYPos;
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b3MouseMoveCallback m_mouseMoveCallback;
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b3MouseButtonCallback m_mouseButtonCallback;
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b3ResizeCallback m_resizeCallback;
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b3WheelCallback m_wheelCallback;
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b3KeyboardCallback m_keyboardCallback;
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b3RenderCallback m_renderCallback;
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int m_width;
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int m_height;
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GLFWwindow* m_glfwWindow;
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GLFWOpenGLWindowInternalData()
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:m_requestedExit(false),
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m_hasCursorPos(false),
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m_altPressed(false),
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m_shiftPressed(false),
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m_ctrlPressed(false),
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m_cursorXPos(0),
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m_cursorYPos(0),
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m_mouseMoveCallback(0),
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m_mouseButtonCallback(0),
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m_resizeCallback(0),
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m_wheelCallback(0),
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m_keyboardCallback(0),
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m_renderCallback(0),
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m_width(0),
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m_height(0),
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m_glfwWindow(0)
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{
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}
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};
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static void GLFWErrorCallback(int error, const char* description)
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{
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fprintf(stderr, "Error: %s\n", description);
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}
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static void GLFWMouseButtonCallback(GLFWwindow* window,int button,int glfwState,int)
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{
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GLFWOpenGLWindow* wnd = (GLFWOpenGLWindow*) glfwGetWindowUserPointer(window);
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if (wnd && wnd->getMouseButtonCallback())
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{
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int state = (glfwState == GLFW_PRESS)? 1 : 0;
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wnd->mouseButtonCallbackInternal(button, state);
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}
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}
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static void GLFWScrollCallback(GLFWwindow* window, double deltaX,double deltaY)
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{
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GLFWOpenGLWindow* wnd = (GLFWOpenGLWindow*) glfwGetWindowUserPointer(window);
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if (wnd && wnd->getWheelCallback())
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{
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wnd->getWheelCallback()(deltaX*100,deltaY*100);
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}
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}
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static void GLFWCursorPosCallback(GLFWwindow* window,double xPos,double yPos)
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{
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GLFWOpenGLWindow* wnd = (GLFWOpenGLWindow*) glfwGetWindowUserPointer(window);
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if (wnd && wnd->getMouseMoveCallback())
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{
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wnd->mouseCursorCallbackInternal(xPos,yPos);
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}
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}
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static void GLFWKeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
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{
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GLFWOpenGLWindow* wnd = (GLFWOpenGLWindow*) glfwGetWindowUserPointer(window);
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if (wnd)
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{
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wnd->keyboardCallbackInternal(key,action);
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}
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if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
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{
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glfwSetWindowShouldClose(window, GLFW_TRUE);
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}
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}
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static void GLFWSizeCallback(GLFWwindow* window,int width,int height)
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{
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GLFWOpenGLWindow* wnd = (GLFWOpenGLWindow*) glfwGetWindowUserPointer(window);
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{
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wnd->resizeInternal(width,height);
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}
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}
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GLFWOpenGLWindow::GLFWOpenGLWindow()
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{
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m_data = new GLFWOpenGLWindowInternalData();
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}
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GLFWOpenGLWindow::~GLFWOpenGLWindow()
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{
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if (m_data->m_glfwWindow)
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{
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closeWindow();
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}
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delete m_data;
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}
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int getBulletKeyFromGLFWKeycode(int glfwKeyCode)
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{
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int keycode = -1;
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if (glfwKeyCode >= 'A' && glfwKeyCode <= 'Z')
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{
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return glfwKeyCode+32;//todo: fix the ascii A vs a input
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}
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if (glfwKeyCode >= '0' && glfwKeyCode <= '9')
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{
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return glfwKeyCode;
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}
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switch (glfwKeyCode)
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{
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case GLFW_KEY_ENTER: {keycode = B3G_RETURN; break; };
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case GLFW_KEY_ESCAPE: {keycode = B3G_ESCAPE; break; };
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case GLFW_KEY_F1: {keycode = B3G_F1; break;}
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case GLFW_KEY_F2: {keycode = B3G_F2; break;}
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case GLFW_KEY_F3: {keycode = B3G_F3; break;}
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case GLFW_KEY_F4: {keycode = B3G_F4; break;}
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case GLFW_KEY_F5: {keycode = B3G_F5; break;}
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case GLFW_KEY_F6: {keycode = B3G_F6; break;}
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case GLFW_KEY_F7: {keycode = B3G_F7; break;}
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case GLFW_KEY_F8: {keycode = B3G_F8; break;}
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case GLFW_KEY_F9: {keycode = B3G_F9; break;}
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case GLFW_KEY_F10: {keycode= B3G_F10; break;}
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//case GLFW_KEY_SPACE: {keycode= ' '; break;}
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case GLFW_KEY_PAGE_DOWN: {keycode= B3G_PAGE_DOWN; break;}
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case GLFW_KEY_PAGE_UP: {keycode= B3G_PAGE_UP; break;}
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case GLFW_KEY_INSERT: {keycode= B3G_INSERT; break;}
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case GLFW_KEY_BACKSPACE: {keycode= B3G_BACKSPACE; break;}
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case GLFW_KEY_DELETE: {keycode= B3G_DELETE; break;}
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case GLFW_KEY_END:{keycode= B3G_END; break;}
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case GLFW_KEY_HOME:{keycode= B3G_HOME; break;}
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case GLFW_KEY_LEFT:{keycode= B3G_LEFT_ARROW; break;}
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case GLFW_KEY_UP:{keycode= B3G_UP_ARROW; break;}
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case GLFW_KEY_RIGHT:{keycode= B3G_RIGHT_ARROW; break;}
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case GLFW_KEY_DOWN:{keycode= B3G_DOWN_ARROW; break;}
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case GLFW_KEY_RIGHT_SHIFT:{keycode=B3G_SHIFT;break;}
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case GLFW_KEY_LEFT_SHIFT:{keycode=B3G_SHIFT;break;}
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case GLFW_KEY_MENU:{keycode=B3G_ALT;break;}
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case GLFW_KEY_RIGHT_CONTROL:{keycode=B3G_CONTROL;break;}
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case GLFW_KEY_LEFT_CONTROL:{keycode=B3G_CONTROL;break;}
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default:
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{
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//keycode = MapVirtualKey( virtualKeyCode, MAPGLFW_KEY_GLFW_KEY_TO_CHAR ) & 0x0000FFFF;
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}
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};
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return keycode;
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}
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void GLFWOpenGLWindow::keyboardCallbackInternal(int key, int state)
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{
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if (getKeyboardCallback())
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{
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//convert keyboard codes from glfw to bullet
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int btcode = getBulletKeyFromGLFWKeycode(key);
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int btstate = (state == GLFW_RELEASE)? 0 : 1;
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switch (btcode)
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{
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case B3G_SHIFT:
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{
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m_data->m_shiftPressed = state!=0;
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break;
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}
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case B3G_ALT:
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{
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m_data->m_altPressed = state!=0;
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break;
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}
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case B3G_CONTROL:
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{
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m_data->m_ctrlPressed = state!=0;
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break;
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}
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default:
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{
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}
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}
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getKeyboardCallback()(btcode,btstate);
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}
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}
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void GLFWOpenGLWindow::mouseButtonCallbackInternal(int button, int state)
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{
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if (getMouseButtonCallback() && m_data->m_hasCursorPos)
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{
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getMouseButtonCallback()(button,state,m_data->m_cursorXPos,m_data->m_cursorYPos);
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}
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}
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void GLFWOpenGLWindow::mouseCursorCallbackInternal(double xPos, double yPos)
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{
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if (getMouseMoveCallback())
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{
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m_data->m_hasCursorPos = true;
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m_data->m_cursorXPos = xPos;
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m_data->m_cursorYPos = yPos;
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getMouseMoveCallback()(xPos,yPos);
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}
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}
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void GLFWOpenGLWindow::resizeInternal(int width,int height)
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{
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if (getResizeCallback())
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{
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getResizeCallback()(width,height);
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}
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m_data->m_width = width;
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m_data->m_height = height;
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glViewport (0,0,width,height);
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}
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void GLFWOpenGLWindow::createDefaultWindow(int width, int height, const char* title)
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{
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b3gWindowConstructionInfo ci;
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ci.m_width = width;
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ci.m_height = height;
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ci.m_title = title;
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createWindow(ci);
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}
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void GLFWOpenGLWindow::createWindow(const b3gWindowConstructionInfo& ci)
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{
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btAssert(m_data->m_glfwWindow==0);
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if (m_data->m_glfwWindow==0)
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{
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glfwSetErrorCallback(GLFWErrorCallback);
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if (!glfwInit())
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exit(EXIT_FAILURE);
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if (ci.m_openglVersion==2)
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{
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
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} else
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{
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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}
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m_data->m_glfwWindow = glfwCreateWindow(ci.m_width, ci.m_height, ci.m_title, NULL, NULL);
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m_data->m_width = ci.m_width;
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m_data->m_height = ci.m_height;
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if (!m_data->m_glfwWindow)
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{
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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glfwSetKeyCallback(m_data->m_glfwWindow,GLFWKeyCallback);
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glfwSetMouseButtonCallback(m_data->m_glfwWindow,GLFWMouseButtonCallback);
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glfwSetCursorPosCallback(m_data->m_glfwWindow,GLFWCursorPosCallback);
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glfwSetScrollCallback(m_data->m_glfwWindow, GLFWScrollCallback);
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glfwSetWindowSizeCallback(m_data->m_glfwWindow, GLFWSizeCallback);
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glfwSetWindowUserPointer(m_data->m_glfwWindow,this);
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glfwMakeContextCurrent(m_data->m_glfwWindow);
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gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
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glfwSwapInterval(0);//1);
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}
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}
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void GLFWOpenGLWindow::closeWindow()
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{
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if (m_data->m_glfwWindow)
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{
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glfwDestroyWindow(m_data->m_glfwWindow);
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glfwTerminate();
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m_data->m_glfwWindow = 0;
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}
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}
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void GLFWOpenGLWindow::runMainLoop()
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{
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}
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float GLFWOpenGLWindow::getTimeInSeconds()
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{
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return 0.f;
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}
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bool GLFWOpenGLWindow::requestedExit() const
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{
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bool shouldClose = m_data->m_requestedExit;
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if (m_data->m_glfwWindow)
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{
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shouldClose = shouldClose || glfwWindowShouldClose(m_data->m_glfwWindow);
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}
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return shouldClose;
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}
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void GLFWOpenGLWindow::setRequestExit()
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{
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if (m_data->m_glfwWindow)
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{
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glfwSetWindowShouldClose(m_data->m_glfwWindow, GLFW_TRUE);
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}
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m_data->m_requestedExit = true;
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}
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void GLFWOpenGLWindow::startRendering()
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{
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if (m_data->m_glfwWindow)
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{
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glfwSwapBuffers(m_data->m_glfwWindow);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
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}
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}
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void GLFWOpenGLWindow::endRendering()
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{
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glfwPollEvents();
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}
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bool GLFWOpenGLWindow::isModifierKeyPressed(int key)
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{
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bool result = false;
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switch (key)
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{
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case B3G_SHIFT:
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{
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result = m_data->m_shiftPressed;
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break;
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}
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case B3G_ALT:
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{
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result = m_data->m_altPressed;
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break;
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}
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case B3G_CONTROL:
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{
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result = m_data->m_ctrlPressed;
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break;
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}
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default:
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{
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}
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}
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return result;
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}
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void GLFWOpenGLWindow::setMouseMoveCallback(b3MouseMoveCallback mouseCallback)
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{
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m_data->m_mouseMoveCallback = mouseCallback;
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}
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b3MouseMoveCallback GLFWOpenGLWindow::getMouseMoveCallback()
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{
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return m_data->m_mouseMoveCallback;
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}
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void GLFWOpenGLWindow::setMouseButtonCallback(b3MouseButtonCallback mouseCallback)
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{
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m_data->m_mouseButtonCallback = mouseCallback;
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}
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b3MouseButtonCallback GLFWOpenGLWindow::getMouseButtonCallback()
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{
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return m_data->m_mouseButtonCallback;
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}
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void GLFWOpenGLWindow::setResizeCallback(b3ResizeCallback resizeCallback)
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{
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m_data->m_resizeCallback = resizeCallback;
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}
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b3ResizeCallback GLFWOpenGLWindow::getResizeCallback()
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{
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return m_data->m_resizeCallback;
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}
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void GLFWOpenGLWindow::setWheelCallback(b3WheelCallback wheelCallback)
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{
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m_data->m_wheelCallback = wheelCallback;
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}
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b3WheelCallback GLFWOpenGLWindow::getWheelCallback()
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{
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return m_data->m_wheelCallback;
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}
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void GLFWOpenGLWindow::setKeyboardCallback( b3KeyboardCallback keyboardCallback)
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{
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m_data->m_keyboardCallback = keyboardCallback;
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}
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b3KeyboardCallback GLFWOpenGLWindow::getKeyboardCallback()
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{
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return m_data->m_keyboardCallback;
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}
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void GLFWOpenGLWindow::setRenderCallback( b3RenderCallback renderCallback)
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{
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m_data->m_renderCallback = renderCallback;
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}
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void GLFWOpenGLWindow::setWindowTitle(const char* title)
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{
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if (m_data->m_glfwWindow)
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{
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glfwSetWindowTitle(m_data->m_glfwWindow,title);
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}
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}
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float GLFWOpenGLWindow::getRetinaScale() const
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{
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return 1.f;
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}
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void GLFWOpenGLWindow::setAllowRetina(bool allow)
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{
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}
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int GLFWOpenGLWindow::getWidth() const
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{
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if (m_data->m_glfwWindow)
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{
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glfwGetFramebufferSize(m_data->m_glfwWindow, &m_data->m_width, &m_data->m_height);
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}
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return m_data->m_width;
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}
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int GLFWOpenGLWindow::getHeight() const
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{
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if (m_data->m_glfwWindow)
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{
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glfwGetFramebufferSize(m_data->m_glfwWindow, &m_data->m_width, &m_data->m_height);
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}
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return m_data->m_height;
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}
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int GLFWOpenGLWindow::fileOpenDialog(char* fileName, int maxFileNameLength)
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{
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return 0;
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}
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#endif //B3_USE_GLFW
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78
examples/OpenGLWindow/GLFWOpenGLWindow.h
Normal file
78
examples/OpenGLWindow/GLFWOpenGLWindow.h
Normal file
@ -0,0 +1,78 @@
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#ifndef GLFW_OPENGL_WINDOW_H
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#define GLFW_OPENGL_WINDOW_H
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#ifdef B3_USE_GLFW
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#include "../CommonInterfaces/CommonWindowInterface.h"
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#define b3gDefaultOpenGLWindow GLFWOpenGLWindow
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class GLFWOpenGLWindow : public CommonWindowInterface
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{
|
||||
struct GLFWOpenGLWindowInternalData* m_data;
|
||||
|
||||
protected:
|
||||
|
||||
|
||||
public:
|
||||
|
||||
GLFWOpenGLWindow();
|
||||
|
||||
virtual ~GLFWOpenGLWindow();
|
||||
|
||||
virtual void createDefaultWindow(int width, int height, const char* title);
|
||||
|
||||
virtual void createWindow(const b3gWindowConstructionInfo& ci);
|
||||
|
||||
virtual void closeWindow();
|
||||
|
||||
virtual void runMainLoop();
|
||||
virtual float getTimeInSeconds();
|
||||
|
||||
virtual bool requestedExit() const;
|
||||
virtual void setRequestExit();
|
||||
|
||||
virtual void startRendering();
|
||||
|
||||
virtual void endRendering();
|
||||
|
||||
virtual bool isModifierKeyPressed(int key);
|
||||
|
||||
virtual void setMouseMoveCallback(b3MouseMoveCallback mouseCallback);
|
||||
virtual b3MouseMoveCallback getMouseMoveCallback();
|
||||
|
||||
virtual void setMouseButtonCallback(b3MouseButtonCallback mouseCallback);
|
||||
virtual b3MouseButtonCallback getMouseButtonCallback();
|
||||
|
||||
virtual void setResizeCallback(b3ResizeCallback resizeCallback);
|
||||
virtual b3ResizeCallback getResizeCallback();
|
||||
|
||||
virtual void setWheelCallback(b3WheelCallback wheelCallback);
|
||||
virtual b3WheelCallback getWheelCallback();
|
||||
|
||||
virtual void setKeyboardCallback( b3KeyboardCallback keyboardCallback);
|
||||
virtual b3KeyboardCallback getKeyboardCallback();
|
||||
|
||||
|
||||
|
||||
virtual void setRenderCallback( b3RenderCallback renderCallback);
|
||||
|
||||
virtual void setWindowTitle(const char* title);
|
||||
|
||||
virtual float getRetinaScale() const;
|
||||
virtual void setAllowRetina(bool allow);
|
||||
|
||||
virtual int getWidth() const;
|
||||
virtual int getHeight() const;
|
||||
|
||||
virtual int fileOpenDialog(char* fileName, int maxFileNameLength);
|
||||
|
||||
void keyboardCallbackInternal(int key, int state);
|
||||
void mouseButtonCallbackInternal(int button, int state);
|
||||
void mouseCursorCallbackInternal(double xPos, double yPos);
|
||||
void resizeInternal(int width,int height);
|
||||
};
|
||||
#endif//B3_USE_GLFW
|
||||
#endif//GLFW_OPENGL_WINDOW_H
|
||||
284
examples/ThirdPartyLibs/glad/KHR/khrplatform.h
Normal file
284
examples/ThirdPartyLibs/glad/KHR/khrplatform.h
Normal file
@ -0,0 +1,284 @@
|
||||
#ifndef __khrplatform_h_
|
||||
#define __khrplatform_h_
|
||||
|
||||
/*
|
||||
** Copyright (c) 2008-2009 The Khronos Group Inc.
|
||||
**
|
||||
** Permission is hereby granted, free of charge, to any person obtaining a
|
||||
** copy of this software and/or associated documentation files (the
|
||||
** "Materials"), to deal in the Materials without restriction, including
|
||||
** without limitation the rights to use, copy, modify, merge, publish,
|
||||
** distribute, sublicense, and/or sell copies of the Materials, and to
|
||||
** permit persons to whom the Materials are furnished to do so, subject to
|
||||
** the following conditions:
|
||||
**
|
||||
** The above copyright notice and this permission notice shall be included
|
||||
** in all copies or substantial portions of the Materials.
|
||||
**
|
||||
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
|
||||
*/
|
||||
|
||||
/* Khronos platform-specific types and definitions.
|
||||
*
|
||||
* $Revision: 32517 $ on $Date: 2016-03-11 02:41:19 -0800 (Fri, 11 Mar 2016) $
|
||||
*
|
||||
* Adopters may modify this file to suit their platform. Adopters are
|
||||
* encouraged to submit platform specific modifications to the Khronos
|
||||
* group so that they can be included in future versions of this file.
|
||||
* Please submit changes by sending them to the public Khronos Bugzilla
|
||||
* (http://khronos.org/bugzilla) by filing a bug against product
|
||||
* "Khronos (general)" component "Registry".
|
||||
*
|
||||
* A predefined template which fills in some of the bug fields can be
|
||||
* reached using http://tinyurl.com/khrplatform-h-bugreport, but you
|
||||
* must create a Bugzilla login first.
|
||||
*
|
||||
*
|
||||
* See the Implementer's Guidelines for information about where this file
|
||||
* should be located on your system and for more details of its use:
|
||||
* http://www.khronos.org/registry/implementers_guide.pdf
|
||||
*
|
||||
* This file should be included as
|
||||
* #include <KHR/khrplatform.h>
|
||||
* by Khronos client API header files that use its types and defines.
|
||||
*
|
||||
* The types in khrplatform.h should only be used to define API-specific types.
|
||||
*
|
||||
* Types defined in khrplatform.h:
|
||||
* khronos_int8_t signed 8 bit
|
||||
* khronos_uint8_t unsigned 8 bit
|
||||
* khronos_int16_t signed 16 bit
|
||||
* khronos_uint16_t unsigned 16 bit
|
||||
* khronos_int32_t signed 32 bit
|
||||
* khronos_uint32_t unsigned 32 bit
|
||||
* khronos_int64_t signed 64 bit
|
||||
* khronos_uint64_t unsigned 64 bit
|
||||
* khronos_intptr_t signed same number of bits as a pointer
|
||||
* khronos_uintptr_t unsigned same number of bits as a pointer
|
||||
* khronos_ssize_t signed size
|
||||
* khronos_usize_t unsigned size
|
||||
* khronos_float_t signed 32 bit floating point
|
||||
* khronos_time_ns_t unsigned 64 bit time in nanoseconds
|
||||
* khronos_utime_nanoseconds_t unsigned time interval or absolute time in
|
||||
* nanoseconds
|
||||
* khronos_stime_nanoseconds_t signed time interval in nanoseconds
|
||||
* khronos_boolean_enum_t enumerated boolean type. This should
|
||||
* only be used as a base type when a client API's boolean type is
|
||||
* an enum. Client APIs which use an integer or other type for
|
||||
* booleans cannot use this as the base type for their boolean.
|
||||
*
|
||||
* Tokens defined in khrplatform.h:
|
||||
*
|
||||
* KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
|
||||
*
|
||||
* KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
|
||||
* KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
|
||||
*
|
||||
* Calling convention macros defined in this file:
|
||||
* KHRONOS_APICALL
|
||||
* KHRONOS_APIENTRY
|
||||
* KHRONOS_APIATTRIBUTES
|
||||
*
|
||||
* These may be used in function prototypes as:
|
||||
*
|
||||
* KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
|
||||
* int arg1,
|
||||
* int arg2) KHRONOS_APIATTRIBUTES;
|
||||
*/
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APICALL
|
||||
*-------------------------------------------------------------------------
|
||||
* This precedes the return type of the function in the function prototype.
|
||||
*/
|
||||
#if defined(_WIN32) && !defined(__SCITECH_SNAP__)
|
||||
# define KHRONOS_APICALL __declspec(dllimport)
|
||||
#elif defined (__SYMBIAN32__)
|
||||
# define KHRONOS_APICALL IMPORT_C
|
||||
#elif defined(__ANDROID__)
|
||||
# define KHRONOS_APICALL __attribute__((visibility("default")))
|
||||
#else
|
||||
# define KHRONOS_APICALL
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APIENTRY
|
||||
*-------------------------------------------------------------------------
|
||||
* This follows the return type of the function and precedes the function
|
||||
* name in the function prototype.
|
||||
*/
|
||||
#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
|
||||
/* Win32 but not WinCE */
|
||||
# define KHRONOS_APIENTRY __stdcall
|
||||
#else
|
||||
# define KHRONOS_APIENTRY
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* Definition of KHRONOS_APIATTRIBUTES
|
||||
*-------------------------------------------------------------------------
|
||||
* This follows the closing parenthesis of the function prototype arguments.
|
||||
*/
|
||||
#if defined (__ARMCC_2__)
|
||||
#define KHRONOS_APIATTRIBUTES __softfp
|
||||
#else
|
||||
#define KHRONOS_APIATTRIBUTES
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------------------
|
||||
* basic type definitions
|
||||
*-----------------------------------------------------------------------*/
|
||||
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
|
||||
|
||||
|
||||
/*
|
||||
* Using <stdint.h>
|
||||
*/
|
||||
#include <stdint.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif defined(__VMS ) || defined(__sgi)
|
||||
|
||||
/*
|
||||
* Using <inttypes.h>
|
||||
*/
|
||||
#include <inttypes.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
|
||||
|
||||
/*
|
||||
* Win32
|
||||
*/
|
||||
typedef __int32 khronos_int32_t;
|
||||
typedef unsigned __int32 khronos_uint32_t;
|
||||
typedef __int64 khronos_int64_t;
|
||||
typedef unsigned __int64 khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif defined(__sun__) || defined(__digital__)
|
||||
|
||||
/*
|
||||
* Sun or Digital
|
||||
*/
|
||||
typedef int khronos_int32_t;
|
||||
typedef unsigned int khronos_uint32_t;
|
||||
#if defined(__arch64__) || defined(_LP64)
|
||||
typedef long int khronos_int64_t;
|
||||
typedef unsigned long int khronos_uint64_t;
|
||||
#else
|
||||
typedef long long int khronos_int64_t;
|
||||
typedef unsigned long long int khronos_uint64_t;
|
||||
#endif /* __arch64__ */
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#elif 0
|
||||
|
||||
/*
|
||||
* Hypothetical platform with no float or int64 support
|
||||
*/
|
||||
typedef int khronos_int32_t;
|
||||
typedef unsigned int khronos_uint32_t;
|
||||
#define KHRONOS_SUPPORT_INT64 0
|
||||
#define KHRONOS_SUPPORT_FLOAT 0
|
||||
|
||||
#else
|
||||
|
||||
/*
|
||||
* Generic fallback
|
||||
*/
|
||||
#include <stdint.h>
|
||||
typedef int32_t khronos_int32_t;
|
||||
typedef uint32_t khronos_uint32_t;
|
||||
typedef int64_t khronos_int64_t;
|
||||
typedef uint64_t khronos_uint64_t;
|
||||
#define KHRONOS_SUPPORT_INT64 1
|
||||
#define KHRONOS_SUPPORT_FLOAT 1
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Types that are (so far) the same on all platforms
|
||||
*/
|
||||
typedef signed char khronos_int8_t;
|
||||
typedef unsigned char khronos_uint8_t;
|
||||
typedef signed short int khronos_int16_t;
|
||||
typedef unsigned short int khronos_uint16_t;
|
||||
|
||||
/*
|
||||
* Types that differ between LLP64 and LP64 architectures - in LLP64,
|
||||
* pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
|
||||
* to be the only LLP64 architecture in current use.
|
||||
*/
|
||||
#ifdef _WIN64
|
||||
typedef signed long long int khronos_intptr_t;
|
||||
typedef unsigned long long int khronos_uintptr_t;
|
||||
typedef signed long long int khronos_ssize_t;
|
||||
typedef unsigned long long int khronos_usize_t;
|
||||
#else
|
||||
typedef signed long int khronos_intptr_t;
|
||||
typedef unsigned long int khronos_uintptr_t;
|
||||
typedef signed long int khronos_ssize_t;
|
||||
typedef unsigned long int khronos_usize_t;
|
||||
#endif
|
||||
|
||||
#if KHRONOS_SUPPORT_FLOAT
|
||||
/*
|
||||
* Float type
|
||||
*/
|
||||
typedef float khronos_float_t;
|
||||
#endif
|
||||
|
||||
#if KHRONOS_SUPPORT_INT64
|
||||
/* Time types
|
||||
*
|
||||
* These types can be used to represent a time interval in nanoseconds or
|
||||
* an absolute Unadjusted System Time. Unadjusted System Time is the number
|
||||
* of nanoseconds since some arbitrary system event (e.g. since the last
|
||||
* time the system booted). The Unadjusted System Time is an unsigned
|
||||
* 64 bit value that wraps back to 0 every 584 years. Time intervals
|
||||
* may be either signed or unsigned.
|
||||
*/
|
||||
typedef khronos_uint64_t khronos_utime_nanoseconds_t;
|
||||
typedef khronos_int64_t khronos_stime_nanoseconds_t;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Dummy value used to pad enum types to 32 bits.
|
||||
*/
|
||||
#ifndef KHRONOS_MAX_ENUM
|
||||
#define KHRONOS_MAX_ENUM 0x7FFFFFFF
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Enumerated boolean type
|
||||
*
|
||||
* Values other than zero should be considered to be true. Therefore
|
||||
* comparisons should not be made against KHRONOS_TRUE.
|
||||
*/
|
||||
typedef enum {
|
||||
KHRONOS_FALSE = 0,
|
||||
KHRONOS_TRUE = 1,
|
||||
KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
|
||||
} khronos_boolean_enum_t;
|
||||
|
||||
#endif /* __khrplatform_h_ */
|
||||
2498
examples/ThirdPartyLibs/glad/glad.c
Normal file
2498
examples/ThirdPartyLibs/glad/glad.c
Normal file
File diff suppressed because it is too large
Load Diff
5208
examples/ThirdPartyLibs/glad/glad/glad.h
Normal file
5208
examples/ThirdPartyLibs/glad/glad/glad.h
Normal file
File diff suppressed because it is too large
Load Diff
574
examples/ThirdPartyLibs/glad/linmath.h
Normal file
574
examples/ThirdPartyLibs/glad/linmath.h
Normal file
@ -0,0 +1,574 @@
|
||||
#ifndef LINMATH_H
|
||||
#define LINMATH_H
|
||||
|
||||
#include <math.h>
|
||||
|
||||
#ifdef _MSC_VER
|
||||
#define inline __inline
|
||||
#endif
|
||||
|
||||
#define LINMATH_H_DEFINE_VEC(n) \
|
||||
typedef float vec##n[n]; \
|
||||
static inline void vec##n##_add(vec##n r, vec##n const a, vec##n const b) \
|
||||
{ \
|
||||
int i; \
|
||||
for(i=0; i<n; ++i) \
|
||||
r[i] = a[i] + b[i]; \
|
||||
} \
|
||||
static inline void vec##n##_sub(vec##n r, vec##n const a, vec##n const b) \
|
||||
{ \
|
||||
int i; \
|
||||
for(i=0; i<n; ++i) \
|
||||
r[i] = a[i] - b[i]; \
|
||||
} \
|
||||
static inline void vec##n##_scale(vec##n r, vec##n const v, float const s) \
|
||||
{ \
|
||||
int i; \
|
||||
for(i=0; i<n; ++i) \
|
||||
r[i] = v[i] * s; \
|
||||
} \
|
||||
static inline float vec##n##_mul_inner(vec##n const a, vec##n const b) \
|
||||
{ \
|
||||
float p = 0.; \
|
||||
int i; \
|
||||
for(i=0; i<n; ++i) \
|
||||
p += b[i]*a[i]; \
|
||||
return p; \
|
||||
} \
|
||||
static inline float vec##n##_len(vec##n const v) \
|
||||
{ \
|
||||
return (float) sqrt(vec##n##_mul_inner(v,v)); \
|
||||
} \
|
||||
static inline void vec##n##_norm(vec##n r, vec##n const v) \
|
||||
{ \
|
||||
float k = 1.f / vec##n##_len(v); \
|
||||
vec##n##_scale(r, v, k); \
|
||||
}
|
||||
|
||||
LINMATH_H_DEFINE_VEC(2)
|
||||
LINMATH_H_DEFINE_VEC(3)
|
||||
LINMATH_H_DEFINE_VEC(4)
|
||||
|
||||
static inline void vec3_mul_cross(vec3 r, vec3 const a, vec3 const b)
|
||||
{
|
||||
r[0] = a[1]*b[2] - a[2]*b[1];
|
||||
r[1] = a[2]*b[0] - a[0]*b[2];
|
||||
r[2] = a[0]*b[1] - a[1]*b[0];
|
||||
}
|
||||
|
||||
static inline void vec3_reflect(vec3 r, vec3 const v, vec3 const n)
|
||||
{
|
||||
float p = 2.f*vec3_mul_inner(v, n);
|
||||
int i;
|
||||
for(i=0;i<3;++i)
|
||||
r[i] = v[i] - p*n[i];
|
||||
}
|
||||
|
||||
static inline void vec4_mul_cross(vec4 r, vec4 a, vec4 b)
|
||||
{
|
||||
r[0] = a[1]*b[2] - a[2]*b[1];
|
||||
r[1] = a[2]*b[0] - a[0]*b[2];
|
||||
r[2] = a[0]*b[1] - a[1]*b[0];
|
||||
r[3] = 1.f;
|
||||
}
|
||||
|
||||
static inline void vec4_reflect(vec4 r, vec4 v, vec4 n)
|
||||
{
|
||||
float p = 2.f*vec4_mul_inner(v, n);
|
||||
int i;
|
||||
for(i=0;i<4;++i)
|
||||
r[i] = v[i] - p*n[i];
|
||||
}
|
||||
|
||||
typedef vec4 mat4x4[4];
|
||||
static inline void mat4x4_identity(mat4x4 M)
|
||||
{
|
||||
int i, j;
|
||||
for(i=0; i<4; ++i)
|
||||
for(j=0; j<4; ++j)
|
||||
M[i][j] = i==j ? 1.f : 0.f;
|
||||
}
|
||||
static inline void mat4x4_dup(mat4x4 M, mat4x4 N)
|
||||
{
|
||||
int i, j;
|
||||
for(i=0; i<4; ++i)
|
||||
for(j=0; j<4; ++j)
|
||||
M[i][j] = N[i][j];
|
||||
}
|
||||
static inline void mat4x4_row(vec4 r, mat4x4 M, int i)
|
||||
{
|
||||
int k;
|
||||
for(k=0; k<4; ++k)
|
||||
r[k] = M[k][i];
|
||||
}
|
||||
static inline void mat4x4_col(vec4 r, mat4x4 M, int i)
|
||||
{
|
||||
int k;
|
||||
for(k=0; k<4; ++k)
|
||||
r[k] = M[i][k];
|
||||
}
|
||||
static inline void mat4x4_transpose(mat4x4 M, mat4x4 N)
|
||||
{
|
||||
int i, j;
|
||||
for(j=0; j<4; ++j)
|
||||
for(i=0; i<4; ++i)
|
||||
M[i][j] = N[j][i];
|
||||
}
|
||||
static inline void mat4x4_add(mat4x4 M, mat4x4 a, mat4x4 b)
|
||||
{
|
||||
int i;
|
||||
for(i=0; i<4; ++i)
|
||||
vec4_add(M[i], a[i], b[i]);
|
||||
}
|
||||
static inline void mat4x4_sub(mat4x4 M, mat4x4 a, mat4x4 b)
|
||||
{
|
||||
int i;
|
||||
for(i=0; i<4; ++i)
|
||||
vec4_sub(M[i], a[i], b[i]);
|
||||
}
|
||||
static inline void mat4x4_scale(mat4x4 M, mat4x4 a, float k)
|
||||
{
|
||||
int i;
|
||||
for(i=0; i<4; ++i)
|
||||
vec4_scale(M[i], a[i], k);
|
||||
}
|
||||
static inline void mat4x4_scale_aniso(mat4x4 M, mat4x4 a, float x, float y, float z)
|
||||
{
|
||||
int i;
|
||||
vec4_scale(M[0], a[0], x);
|
||||
vec4_scale(M[1], a[1], y);
|
||||
vec4_scale(M[2], a[2], z);
|
||||
for(i = 0; i < 4; ++i) {
|
||||
M[3][i] = a[3][i];
|
||||
}
|
||||
}
|
||||
static inline void mat4x4_mul(mat4x4 M, mat4x4 a, mat4x4 b)
|
||||
{
|
||||
mat4x4 temp;
|
||||
int k, r, c;
|
||||
for(c=0; c<4; ++c) for(r=0; r<4; ++r) {
|
||||
temp[c][r] = 0.f;
|
||||
for(k=0; k<4; ++k)
|
||||
temp[c][r] += a[k][r] * b[c][k];
|
||||
}
|
||||
mat4x4_dup(M, temp);
|
||||
}
|
||||
static inline void mat4x4_mul_vec4(vec4 r, mat4x4 M, vec4 v)
|
||||
{
|
||||
int i, j;
|
||||
for(j=0; j<4; ++j) {
|
||||
r[j] = 0.f;
|
||||
for(i=0; i<4; ++i)
|
||||
r[j] += M[i][j] * v[i];
|
||||
}
|
||||
}
|
||||
static inline void mat4x4_translate(mat4x4 T, float x, float y, float z)
|
||||
{
|
||||
mat4x4_identity(T);
|
||||
T[3][0] = x;
|
||||
T[3][1] = y;
|
||||
T[3][2] = z;
|
||||
}
|
||||
static inline void mat4x4_translate_in_place(mat4x4 M, float x, float y, float z)
|
||||
{
|
||||
vec4 t = {x, y, z, 0};
|
||||
vec4 r;
|
||||
int i;
|
||||
for (i = 0; i < 4; ++i) {
|
||||
mat4x4_row(r, M, i);
|
||||
M[3][i] += vec4_mul_inner(r, t);
|
||||
}
|
||||
}
|
||||
static inline void mat4x4_from_vec3_mul_outer(mat4x4 M, vec3 a, vec3 b)
|
||||
{
|
||||
int i, j;
|
||||
for(i=0; i<4; ++i) for(j=0; j<4; ++j)
|
||||
M[i][j] = i<3 && j<3 ? a[i] * b[j] : 0.f;
|
||||
}
|
||||
static inline void mat4x4_rotate(mat4x4 R, mat4x4 M, float x, float y, float z, float angle)
|
||||
{
|
||||
float s = sinf(angle);
|
||||
float c = cosf(angle);
|
||||
vec3 u = {x, y, z};
|
||||
|
||||
if(vec3_len(u) > 1e-4) {
|
||||
mat4x4 T, C, S = {{0}};
|
||||
|
||||
vec3_norm(u, u);
|
||||
mat4x4_from_vec3_mul_outer(T, u, u);
|
||||
|
||||
S[1][2] = u[0];
|
||||
S[2][1] = -u[0];
|
||||
S[2][0] = u[1];
|
||||
S[0][2] = -u[1];
|
||||
S[0][1] = u[2];
|
||||
S[1][0] = -u[2];
|
||||
|
||||
mat4x4_scale(S, S, s);
|
||||
|
||||
mat4x4_identity(C);
|
||||
mat4x4_sub(C, C, T);
|
||||
|
||||
mat4x4_scale(C, C, c);
|
||||
|
||||
mat4x4_add(T, T, C);
|
||||
mat4x4_add(T, T, S);
|
||||
|
||||
T[3][3] = 1.;
|
||||
mat4x4_mul(R, M, T);
|
||||
} else {
|
||||
mat4x4_dup(R, M);
|
||||
}
|
||||
}
|
||||
static inline void mat4x4_rotate_X(mat4x4 Q, mat4x4 M, float angle)
|
||||
{
|
||||
float s = sinf(angle);
|
||||
float c = cosf(angle);
|
||||
mat4x4 R = {
|
||||
{1.f, 0.f, 0.f, 0.f},
|
||||
{0.f, c, s, 0.f},
|
||||
{0.f, -s, c, 0.f},
|
||||
{0.f, 0.f, 0.f, 1.f}
|
||||
};
|
||||
mat4x4_mul(Q, M, R);
|
||||
}
|
||||
static inline void mat4x4_rotate_Y(mat4x4 Q, mat4x4 M, float angle)
|
||||
{
|
||||
float s = sinf(angle);
|
||||
float c = cosf(angle);
|
||||
mat4x4 R = {
|
||||
{ c, 0.f, s, 0.f},
|
||||
{ 0.f, 1.f, 0.f, 0.f},
|
||||
{ -s, 0.f, c, 0.f},
|
||||
{ 0.f, 0.f, 0.f, 1.f}
|
||||
};
|
||||
mat4x4_mul(Q, M, R);
|
||||
}
|
||||
static inline void mat4x4_rotate_Z(mat4x4 Q, mat4x4 M, float angle)
|
||||
{
|
||||
float s = sinf(angle);
|
||||
float c = cosf(angle);
|
||||
mat4x4 R = {
|
||||
{ c, s, 0.f, 0.f},
|
||||
{ -s, c, 0.f, 0.f},
|
||||
{ 0.f, 0.f, 1.f, 0.f},
|
||||
{ 0.f, 0.f, 0.f, 1.f}
|
||||
};
|
||||
mat4x4_mul(Q, M, R);
|
||||
}
|
||||
static inline void mat4x4_invert(mat4x4 T, mat4x4 M)
|
||||
{
|
||||
float idet;
|
||||
float s[6];
|
||||
float c[6];
|
||||
s[0] = M[0][0]*M[1][1] - M[1][0]*M[0][1];
|
||||
s[1] = M[0][0]*M[1][2] - M[1][0]*M[0][2];
|
||||
s[2] = M[0][0]*M[1][3] - M[1][0]*M[0][3];
|
||||
s[3] = M[0][1]*M[1][2] - M[1][1]*M[0][2];
|
||||
s[4] = M[0][1]*M[1][3] - M[1][1]*M[0][3];
|
||||
s[5] = M[0][2]*M[1][3] - M[1][2]*M[0][3];
|
||||
|
||||
c[0] = M[2][0]*M[3][1] - M[3][0]*M[2][1];
|
||||
c[1] = M[2][0]*M[3][2] - M[3][0]*M[2][2];
|
||||
c[2] = M[2][0]*M[3][3] - M[3][0]*M[2][3];
|
||||
c[3] = M[2][1]*M[3][2] - M[3][1]*M[2][2];
|
||||
c[4] = M[2][1]*M[3][3] - M[3][1]*M[2][3];
|
||||
c[5] = M[2][2]*M[3][3] - M[3][2]*M[2][3];
|
||||
|
||||
/* Assumes it is invertible */
|
||||
idet = 1.0f/( s[0]*c[5]-s[1]*c[4]+s[2]*c[3]+s[3]*c[2]-s[4]*c[1]+s[5]*c[0] );
|
||||
|
||||
T[0][0] = ( M[1][1] * c[5] - M[1][2] * c[4] + M[1][3] * c[3]) * idet;
|
||||
T[0][1] = (-M[0][1] * c[5] + M[0][2] * c[4] - M[0][3] * c[3]) * idet;
|
||||
T[0][2] = ( M[3][1] * s[5] - M[3][2] * s[4] + M[3][3] * s[3]) * idet;
|
||||
T[0][3] = (-M[2][1] * s[5] + M[2][2] * s[4] - M[2][3] * s[3]) * idet;
|
||||
|
||||
T[1][0] = (-M[1][0] * c[5] + M[1][2] * c[2] - M[1][3] * c[1]) * idet;
|
||||
T[1][1] = ( M[0][0] * c[5] - M[0][2] * c[2] + M[0][3] * c[1]) * idet;
|
||||
T[1][2] = (-M[3][0] * s[5] + M[3][2] * s[2] - M[3][3] * s[1]) * idet;
|
||||
T[1][3] = ( M[2][0] * s[5] - M[2][2] * s[2] + M[2][3] * s[1]) * idet;
|
||||
|
||||
T[2][0] = ( M[1][0] * c[4] - M[1][1] * c[2] + M[1][3] * c[0]) * idet;
|
||||
T[2][1] = (-M[0][0] * c[4] + M[0][1] * c[2] - M[0][3] * c[0]) * idet;
|
||||
T[2][2] = ( M[3][0] * s[4] - M[3][1] * s[2] + M[3][3] * s[0]) * idet;
|
||||
T[2][3] = (-M[2][0] * s[4] + M[2][1] * s[2] - M[2][3] * s[0]) * idet;
|
||||
|
||||
T[3][0] = (-M[1][0] * c[3] + M[1][1] * c[1] - M[1][2] * c[0]) * idet;
|
||||
T[3][1] = ( M[0][0] * c[3] - M[0][1] * c[1] + M[0][2] * c[0]) * idet;
|
||||
T[3][2] = (-M[3][0] * s[3] + M[3][1] * s[1] - M[3][2] * s[0]) * idet;
|
||||
T[3][3] = ( M[2][0] * s[3] - M[2][1] * s[1] + M[2][2] * s[0]) * idet;
|
||||
}
|
||||
static inline void mat4x4_orthonormalize(mat4x4 R, mat4x4 M)
|
||||
{
|
||||
float s = 1.;
|
||||
vec3 h;
|
||||
|
||||
mat4x4_dup(R, M);
|
||||
vec3_norm(R[2], R[2]);
|
||||
|
||||
s = vec3_mul_inner(R[1], R[2]);
|
||||
vec3_scale(h, R[2], s);
|
||||
vec3_sub(R[1], R[1], h);
|
||||
vec3_norm(R[2], R[2]);
|
||||
|
||||
s = vec3_mul_inner(R[1], R[2]);
|
||||
vec3_scale(h, R[2], s);
|
||||
vec3_sub(R[1], R[1], h);
|
||||
vec3_norm(R[1], R[1]);
|
||||
|
||||
s = vec3_mul_inner(R[0], R[1]);
|
||||
vec3_scale(h, R[1], s);
|
||||
vec3_sub(R[0], R[0], h);
|
||||
vec3_norm(R[0], R[0]);
|
||||
}
|
||||
|
||||
static inline void mat4x4_frustum(mat4x4 M, float l, float r, float b, float t, float n, float f)
|
||||
{
|
||||
M[0][0] = 2.f*n/(r-l);
|
||||
M[0][1] = M[0][2] = M[0][3] = 0.f;
|
||||
|
||||
M[1][1] = 2.f*n/(t-b);
|
||||
M[1][0] = M[1][2] = M[1][3] = 0.f;
|
||||
|
||||
M[2][0] = (r+l)/(r-l);
|
||||
M[2][1] = (t+b)/(t-b);
|
||||
M[2][2] = -(f+n)/(f-n);
|
||||
M[2][3] = -1.f;
|
||||
|
||||
M[3][2] = -2.f*(f*n)/(f-n);
|
||||
M[3][0] = M[3][1] = M[3][3] = 0.f;
|
||||
}
|
||||
static inline void mat4x4_ortho(mat4x4 M, float l, float r, float b, float t, float n, float f)
|
||||
{
|
||||
M[0][0] = 2.f/(r-l);
|
||||
M[0][1] = M[0][2] = M[0][3] = 0.f;
|
||||
|
||||
M[1][1] = 2.f/(t-b);
|
||||
M[1][0] = M[1][2] = M[1][3] = 0.f;
|
||||
|
||||
M[2][2] = -2.f/(f-n);
|
||||
M[2][0] = M[2][1] = M[2][3] = 0.f;
|
||||
|
||||
M[3][0] = -(r+l)/(r-l);
|
||||
M[3][1] = -(t+b)/(t-b);
|
||||
M[3][2] = -(f+n)/(f-n);
|
||||
M[3][3] = 1.f;
|
||||
}
|
||||
static inline void mat4x4_perspective(mat4x4 m, float y_fov, float aspect, float n, float f)
|
||||
{
|
||||
/* NOTE: Degrees are an unhandy unit to work with.
|
||||
* linmath.h uses radians for everything! */
|
||||
float const a = 1.f / (float) tan(y_fov / 2.f);
|
||||
|
||||
m[0][0] = a / aspect;
|
||||
m[0][1] = 0.f;
|
||||
m[0][2] = 0.f;
|
||||
m[0][3] = 0.f;
|
||||
|
||||
m[1][0] = 0.f;
|
||||
m[1][1] = a;
|
||||
m[1][2] = 0.f;
|
||||
m[1][3] = 0.f;
|
||||
|
||||
m[2][0] = 0.f;
|
||||
m[2][1] = 0.f;
|
||||
m[2][2] = -((f + n) / (f - n));
|
||||
m[2][3] = -1.f;
|
||||
|
||||
m[3][0] = 0.f;
|
||||
m[3][1] = 0.f;
|
||||
m[3][2] = -((2.f * f * n) / (f - n));
|
||||
m[3][3] = 0.f;
|
||||
}
|
||||
static inline void mat4x4_look_at(mat4x4 m, vec3 eye, vec3 center, vec3 up)
|
||||
{
|
||||
/* Adapted from Android's OpenGL Matrix.java. */
|
||||
/* See the OpenGL GLUT documentation for gluLookAt for a description */
|
||||
/* of the algorithm. We implement it in a straightforward way: */
|
||||
|
||||
/* TODO: The negation of of can be spared by swapping the order of
|
||||
* operands in the following cross products in the right way. */
|
||||
vec3 f;
|
||||
vec3 s;
|
||||
vec3 t;
|
||||
|
||||
vec3_sub(f, center, eye);
|
||||
vec3_norm(f, f);
|
||||
|
||||
vec3_mul_cross(s, f, up);
|
||||
vec3_norm(s, s);
|
||||
|
||||
vec3_mul_cross(t, s, f);
|
||||
|
||||
m[0][0] = s[0];
|
||||
m[0][1] = t[0];
|
||||
m[0][2] = -f[0];
|
||||
m[0][3] = 0.f;
|
||||
|
||||
m[1][0] = s[1];
|
||||
m[1][1] = t[1];
|
||||
m[1][2] = -f[1];
|
||||
m[1][3] = 0.f;
|
||||
|
||||
m[2][0] = s[2];
|
||||
m[2][1] = t[2];
|
||||
m[2][2] = -f[2];
|
||||
m[2][3] = 0.f;
|
||||
|
||||
m[3][0] = 0.f;
|
||||
m[3][1] = 0.f;
|
||||
m[3][2] = 0.f;
|
||||
m[3][3] = 1.f;
|
||||
|
||||
mat4x4_translate_in_place(m, -eye[0], -eye[1], -eye[2]);
|
||||
}
|
||||
|
||||
typedef float quat[4];
|
||||
static inline void quat_identity(quat q)
|
||||
{
|
||||
q[0] = q[1] = q[2] = 0.f;
|
||||
q[3] = 1.f;
|
||||
}
|
||||
static inline void quat_add(quat r, quat a, quat b)
|
||||
{
|
||||
int i;
|
||||
for(i=0; i<4; ++i)
|
||||
r[i] = a[i] + b[i];
|
||||
}
|
||||
static inline void quat_sub(quat r, quat a, quat b)
|
||||
{
|
||||
int i;
|
||||
for(i=0; i<4; ++i)
|
||||
r[i] = a[i] - b[i];
|
||||
}
|
||||
static inline void quat_mul(quat r, quat p, quat q)
|
||||
{
|
||||
vec3 w;
|
||||
vec3_mul_cross(r, p, q);
|
||||
vec3_scale(w, p, q[3]);
|
||||
vec3_add(r, r, w);
|
||||
vec3_scale(w, q, p[3]);
|
||||
vec3_add(r, r, w);
|
||||
r[3] = p[3]*q[3] - vec3_mul_inner(p, q);
|
||||
}
|
||||
static inline void quat_scale(quat r, quat v, float s)
|
||||
{
|
||||
int i;
|
||||
for(i=0; i<4; ++i)
|
||||
r[i] = v[i] * s;
|
||||
}
|
||||
static inline float quat_inner_product(quat a, quat b)
|
||||
{
|
||||
float p = 0.f;
|
||||
int i;
|
||||
for(i=0; i<4; ++i)
|
||||
p += b[i]*a[i];
|
||||
return p;
|
||||
}
|
||||
static inline void quat_conj(quat r, quat q)
|
||||
{
|
||||
int i;
|
||||
for(i=0; i<3; ++i)
|
||||
r[i] = -q[i];
|
||||
r[3] = q[3];
|
||||
}
|
||||
static inline void quat_rotate(quat r, float angle, vec3 axis) {
|
||||
int i;
|
||||
vec3 v;
|
||||
vec3_scale(v, axis, sinf(angle / 2));
|
||||
for(i=0; i<3; ++i)
|
||||
r[i] = v[i];
|
||||
r[3] = cosf(angle / 2);
|
||||
}
|
||||
#define quat_norm vec4_norm
|
||||
static inline void quat_mul_vec3(vec3 r, quat q, vec3 v)
|
||||
{
|
||||
/*
|
||||
* Method by Fabian 'ryg' Giessen (of Farbrausch)
|
||||
t = 2 * cross(q.xyz, v)
|
||||
v' = v + q.w * t + cross(q.xyz, t)
|
||||
*/
|
||||
vec3 t = {q[0], q[1], q[2]};
|
||||
vec3 u = {q[0], q[1], q[2]};
|
||||
|
||||
vec3_mul_cross(t, t, v);
|
||||
vec3_scale(t, t, 2);
|
||||
|
||||
vec3_mul_cross(u, u, t);
|
||||
vec3_scale(t, t, q[3]);
|
||||
|
||||
vec3_add(r, v, t);
|
||||
vec3_add(r, r, u);
|
||||
}
|
||||
static inline void mat4x4_from_quat(mat4x4 M, quat q)
|
||||
{
|
||||
float a = q[3];
|
||||
float b = q[0];
|
||||
float c = q[1];
|
||||
float d = q[2];
|
||||
float a2 = a*a;
|
||||
float b2 = b*b;
|
||||
float c2 = c*c;
|
||||
float d2 = d*d;
|
||||
|
||||
M[0][0] = a2 + b2 - c2 - d2;
|
||||
M[0][1] = 2.f*(b*c + a*d);
|
||||
M[0][2] = 2.f*(b*d - a*c);
|
||||
M[0][3] = 0.f;
|
||||
|
||||
M[1][0] = 2*(b*c - a*d);
|
||||
M[1][1] = a2 - b2 + c2 - d2;
|
||||
M[1][2] = 2.f*(c*d + a*b);
|
||||
M[1][3] = 0.f;
|
||||
|
||||
M[2][0] = 2.f*(b*d + a*c);
|
||||
M[2][1] = 2.f*(c*d - a*b);
|
||||
M[2][2] = a2 - b2 - c2 + d2;
|
||||
M[2][3] = 0.f;
|
||||
|
||||
M[3][0] = M[3][1] = M[3][2] = 0.f;
|
||||
M[3][3] = 1.f;
|
||||
}
|
||||
|
||||
static inline void mat4x4o_mul_quat(mat4x4 R, mat4x4 M, quat q)
|
||||
{
|
||||
/* XXX: The way this is written only works for othogonal matrices. */
|
||||
/* TODO: Take care of non-orthogonal case. */
|
||||
quat_mul_vec3(R[0], q, M[0]);
|
||||
quat_mul_vec3(R[1], q, M[1]);
|
||||
quat_mul_vec3(R[2], q, M[2]);
|
||||
|
||||
R[3][0] = R[3][1] = R[3][2] = 0.f;
|
||||
R[3][3] = 1.f;
|
||||
}
|
||||
static inline void quat_from_mat4x4(quat q, mat4x4 M)
|
||||
{
|
||||
float r=0.f;
|
||||
int i;
|
||||
|
||||
int perm[] = { 0, 1, 2, 0, 1 };
|
||||
int *p = perm;
|
||||
|
||||
for(i = 0; i<3; i++) {
|
||||
float m = M[i][i];
|
||||
if( m < r )
|
||||
continue;
|
||||
m = r;
|
||||
p = &perm[i];
|
||||
}
|
||||
|
||||
r = (float) sqrt(1.f + M[p[0]][p[0]] - M[p[1]][p[1]] - M[p[2]][p[2]] );
|
||||
|
||||
if(r < 1e-6) {
|
||||
q[0] = 1.f;
|
||||
q[1] = q[2] = q[3] = 0.f;
|
||||
return;
|
||||
}
|
||||
|
||||
q[0] = r/2.f;
|
||||
q[1] = (M[p[0]][p[1]] - M[p[1]][p[0]])/(2.f*r);
|
||||
q[2] = (M[p[2]][p[0]] - M[p[0]][p[2]])/(2.f*r);
|
||||
q[3] = (M[p[2]][p[1]] - M[p[1]][p[2]])/(2.f*r);
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user