From 5b85cada603ff0325dcf852f159837086a5bda14 Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Fri, 2 Oct 2009 15:33:55 +0800 Subject: progs/es: OpenGL ES 1.x and 2.X demo programs. The demo programs are written by Brian Paul, and cherry-picked from opengl-es branch. Several minor issues such as a linking problem are fixed. Signed-off-by: Chia-I Wu --- progs/es1/xegl/msaa.c | 442 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 442 insertions(+) create mode 100644 progs/es1/xegl/msaa.c (limited to 'progs/es1/xegl/msaa.c') diff --git a/progs/es1/xegl/msaa.c b/progs/es1/xegl/msaa.c new file mode 100644 index 0000000000..b4c6c63217 --- /dev/null +++ b/progs/es1/xegl/msaa.c @@ -0,0 +1,442 @@ +/* + * Copyright (C) 2008 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is 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 Software. + * + * THE SOFTWARE IS 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 + * BRIAN PAUL 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 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * Test MSAA with X/EGL and OpenGL ES 1.x + * Brian Paul + * 15 September 2008 + */ + +#define USE_FULL_GL 0 + + +#include +#include +#include +#include +#include +#include +#include +#include +#if USE_FULL_GL +#include /* use full OpenGL */ +#else +#include /* use OpenGL ES 1.x */ +#include +#endif +#include + + + +static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0; +static GLboolean AA = 0*GL_TRUE; + + +static void +draw(void) +{ + float a; + + static const GLfloat verts[4][2] = { + { -1, -.1 }, + { 1, -.1 }, + { -1, .1 }, + { 1, .1 } + }; + static const GLfloat colors[4][4] = { + { 1, 0, 0, 1 }, + { 0, 1, 0, 1 }, + { 0, 0, 1, 1 }, + { 1, 0, 1, 1 } + }; + + if (AA) { + printf("MSAA enabled\n"); + glEnable(GL_MULTISAMPLE); + } + else { + printf("MSAA disabled\n"); + glDisable(GL_MULTISAMPLE); + } + + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + glPushMatrix(); + glRotatef(view_rotx, 1, 0, 0); + glRotatef(view_roty, 0, 1, 0); + glRotatef(view_rotz, 0, 0, 1); + + { + glVertexPointer(2, GL_FLOAT, 0, verts); + glColorPointer(4, GL_FLOAT, 0, colors); + + glEnableClientState(GL_VERTEX_ARRAY); + glEnableClientState(GL_COLOR_ARRAY); + + for (a = 0; a < 360; a += 20.0) { + glPushMatrix(); + + glRotatef(a, 0, 0, 1); + glTranslatef(1.5, 0, 0); + + /* draw triangle */ + glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); + + glPopMatrix(); + } + + glDisableClientState(GL_VERTEX_ARRAY); + glDisableClientState(GL_COLOR_ARRAY); + } + + glPopMatrix(); +} + + +/* new window size or exposure */ +static void +reshape(int width, int height) +{ + GLfloat ary = 3.0; + GLfloat arx = ary * (GLfloat) width / (GLfloat) height; + + glViewport(0, 0, (GLint) width, (GLint) height); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); +#ifdef GL_VERSION_ES_CM_1_0 + glOrthof(-arx, arx, -ary, ary, -1.0, 1.0); +#else + glOrtho(-arx, arx, -ary, ary, -1.0, 1.0); +#endif + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); +} + + + +static void +init(void) +{ + printf("Press 'a' to toggle multisample antialiasing\n"); + printf("Press 'Esc' to exit\n"); +} + + +/* + * Create an RGB, double-buffered X window. + * Return the window and context handles. + */ +static void +make_x_window(Display *x_dpy, EGLDisplay egl_dpy, + const char *name, + int x, int y, int width, int height, + Window *winRet, + EGLContext *ctxRet, + EGLSurface *surfRet) +{ + static const EGLint attribs[] = { + EGL_RED_SIZE, 1, + EGL_GREEN_SIZE, 1, + EGL_BLUE_SIZE, 1, + EGL_DEPTH_SIZE, 1, + EGL_SAMPLES, 1, + EGL_SAMPLE_BUFFERS, 1, + EGL_NONE + }; + + int scrnum; + XSetWindowAttributes attr; + unsigned long mask; + Window root; + Window win; + XVisualInfo *visInfo, visTemplate; + int num_visuals; + EGLContext ctx; + EGLConfig config; + EGLint num_configs; + EGLint vid; + + scrnum = DefaultScreen( x_dpy ); + root = RootWindow( x_dpy, scrnum ); + + if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) { + printf("Error: couldn't get an EGL visual config\n"); + exit(1); + } + + if (num_configs < 1) { + printf("Error: Unable to find multisample pixel format.\n"); + printf("Try running glxinfo to see if your server supports MSAA.\n"); + exit(1); + } + + if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) { + printf("Error: eglGetConfigAttrib() failed\n"); + exit(1); + } + + /* The X window visual must match the EGL config */ + visTemplate.visualid = vid; + visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals); + if (!visInfo) { + printf("Error: couldn't get X visual\n"); + exit(1); + } + + /* window attributes */ + attr.background_pixel = 0; + attr.border_pixel = 0; + attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone); + attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; + mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; + + win = XCreateWindow( x_dpy, root, 0, 0, width, height, + 0, visInfo->depth, InputOutput, + visInfo->visual, mask, &attr ); + + /* set hints and properties */ + { + XSizeHints sizehints; + sizehints.x = x; + sizehints.y = y; + sizehints.width = width; + sizehints.height = height; + sizehints.flags = USSize | USPosition; + XSetNormalHints(x_dpy, win, &sizehints); + XSetStandardProperties(x_dpy, win, name, name, + None, (char **)NULL, 0, &sizehints); + } + +#if USE_FULL_GL + eglBindAPI(EGL_OPENGL_API); +#else + eglBindAPI(EGL_OPENGL_ES_API); +#endif + + ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, NULL ); + if (!ctx) { + printf("Error: eglCreateContext failed\n"); + exit(1); + } + + *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL); + + if (!*surfRet) { + printf("Error: eglCreateWindowSurface failed\n"); + exit(1); + } + + XFree(visInfo); + + *winRet = win; + *ctxRet = ctx; +} + + +static void +event_loop(Display *dpy, Window win, + EGLDisplay egl_dpy, EGLSurface egl_surf) +{ + while (1) { + int redraw = 0; + XEvent event; + + XNextEvent(dpy, &event); + + switch (event.type) { + case Expose: + redraw = 1; + break; + case ConfigureNotify: + reshape(event.xconfigure.width, event.xconfigure.height); + break; + case KeyPress: + { + char buffer[10]; + int r, code; + code = XLookupKeysym(&event.xkey, 0); + if (code == XK_Left) { + view_roty += 5.0; + } + else if (code == XK_Right) { + view_roty -= 5.0; + } + else if (code == XK_Up) { + view_rotx += 5.0; + } + else if (code == XK_Down) { + view_rotx -= 5.0; + } + else { + r = XLookupString(&event.xkey, buffer, sizeof(buffer), + NULL, NULL); + if (buffer[0] == 'a') { + AA = !AA; + redraw = 1; + } + else if (buffer[0] == 27) { + /* escape */ + return; + } + } + } + redraw = 1; + break; + default: + ; /*no-op*/ + } + + if (redraw) { + draw(); + eglSwapBuffers(egl_dpy, egl_surf); + } + } +} + + +static void +usage(void) +{ + printf("Usage:\n"); + printf(" -display set the display to run on\n"); + printf(" -info display OpenGL renderer info\n"); +} + + +int +main(int argc, char *argv[]) +{ + const int winWidth = 600, winHeight = 600; + Display *x_dpy; + Window win; + EGLSurface egl_surf; + EGLContext egl_ctx; + EGLDisplay egl_dpy; + char *dpyName = NULL; + GLboolean printInfo = GL_FALSE; + EGLint egl_major, egl_minor; + int i; + const char *s; + + static struct { + char *name; + GLenum value; + enum {GetString, GetInteger} type; + } info_items[] = { + {"GL_RENDERER", GL_RENDERER, GetString}, + {"GL_VERSION", GL_VERSION, GetString}, + {"GL_VENDOR", GL_VENDOR, GetString}, + {"GL_EXTENSIONS", GL_EXTENSIONS, GetString}, + {"GL_MAX_PALETTE_MATRICES_OES", GL_MAX_PALETTE_MATRICES_OES, GetInteger}, + {"GL_MAX_VERTEX_UNITS_OES", GL_MAX_VERTEX_UNITS_OES, GetInteger}, + }; + + for (i = 1; i < argc; i++) { + if (strcmp(argv[i], "-display") == 0) { + dpyName = argv[i+1]; + i++; + } + else if (strcmp(argv[i], "-info") == 0) { + printInfo = GL_TRUE; + } + else { + usage(); + return -1; + } + } + + x_dpy = XOpenDisplay(dpyName); + if (!x_dpy) { + printf("Error: couldn't open display %s\n", + dpyName ? dpyName : getenv("DISPLAY")); + return -1; + } + + egl_dpy = eglGetDisplay(x_dpy); + if (!egl_dpy) { + printf("Error: eglGetDisplay() failed\n"); + return -1; + } + + if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) { + printf("Error: eglInitialize() failed\n"); + return -1; + } + + s = eglQueryString(egl_dpy, EGL_VERSION); + printf("EGL_VERSION = %s\n", s); + + s = eglQueryString(egl_dpy, EGL_VENDOR); + printf("EGL_VENDOR = %s\n", s); + + s = eglQueryString(egl_dpy, EGL_EXTENSIONS); + printf("EGL_EXTENSIONS = %s\n", s); + + s = eglQueryString(egl_dpy, EGL_CLIENT_APIS); + printf("EGL_CLIENT_APIS = %s\n", s); + + make_x_window(x_dpy, egl_dpy, + "msaa", 0, 0, winWidth, winHeight, + &win, &egl_ctx, &egl_surf); + + XMapWindow(x_dpy, win); + if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) { + printf("Error: eglMakeCurrent() failed\n"); + return -1; + } + + if (printInfo) { + for (i = 0; i < sizeof(info_items)/sizeof(info_items[0]); i++) { + switch (info_items[i].type) { + case GetString: + printf("%s = %s\n", info_items[i].name, (char *)glGetString(info_items[i].value)); + break; + case GetInteger: { + GLint rv = -1; + glGetIntegerv(info_items[i].value, &rv); + printf("%s = %d\n", info_items[i].name, rv); + break; + } + } + } + }; + init(); + + /* Set initial projection/viewing transformation. + * We can't be sure we'll get a ConfigureNotify event when the window + * first appears. + */ + reshape(winWidth, winHeight); + + event_loop(x_dpy, win, egl_dpy, egl_surf); + + eglDestroyContext(egl_dpy, egl_ctx); + eglDestroySurface(egl_dpy, egl_surf); + eglTerminate(egl_dpy); + + + XDestroyWindow(x_dpy, win); + XCloseDisplay(x_dpy); + + return 0; +} -- cgit v1.2.3