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Diffstat (limited to 'progs/es1/xegl/drawtex.c')
-rw-r--r--progs/es1/xegl/drawtex.c427
1 files changed, 427 insertions, 0 deletions
diff --git a/progs/es1/xegl/drawtex.c b/progs/es1/xegl/drawtex.c
new file mode 100644
index 0000000000..ca0615e267
--- /dev/null
+++ b/progs/es1/xegl/drawtex.c
@@ -0,0 +1,427 @@
+/*
+ * Copyright (C) 2008 Tunsgten Graphics,Inc. All Rights Reserved.
+ */
+
+/*
+ * Test GL_OES_draw_texture
+ * Brian Paul
+ * August 2008
+ */
+
+#define GL_GLEXT_PROTOTYPES
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <EGL/egl.h>
+
+
+
+static GLfloat view_posx = 10.0, view_posy = 20.0;
+static GLfloat width = 200, height = 200;
+
+
+static void
+draw(void)
+{
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ glDrawTexfOES(view_posx, view_posy, 0.0, width, height);
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+ GLfloat ar = (GLfloat) width / (GLfloat) height;
+
+ glViewport(0, 0, (GLint) width, (GLint) height);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+
+#ifdef GL_VERSION_ES_CM_1_0
+ glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
+#else
+ glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+#endif
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslatef(0.0, 0.0, -15.0);
+}
+
+
+static float
+dist(GLuint i, GLuint j, float x, float y)
+{
+ return sqrt((i-x) * (i-x) + (j-y) * (j-y));
+}
+
+static void
+make_smile_texture(void)
+{
+#define SZ 128
+ GLenum Filter = GL_LINEAR;
+ GLubyte image[SZ][SZ][4];
+ GLuint i, j;
+ GLint cropRect[4];
+
+ for (i = 0; i < SZ; i++) {
+ for (j = 0; j < SZ; j++) {
+ GLfloat d_mouth = dist(i, j, SZ/2, SZ/2);
+ GLfloat d_rt_eye = dist(i, j, SZ*3/4, SZ*3/4);
+ GLfloat d_lt_eye = dist(i, j, SZ*3/4, SZ*1/4);
+ if (d_rt_eye < SZ / 8 || d_lt_eye < SZ / 8) {
+ image[i][j][0] = 20;
+ image[i][j][1] = 50;
+ image[i][j][2] = 255;
+ image[i][j][3] = 255;
+ }
+ else if (i < SZ/2 && d_mouth < SZ/3) {
+ image[i][j][0] = 255;
+ image[i][j][1] = 20;
+ image[i][j][2] = 20;
+ image[i][j][3] = 255;
+ }
+ else {
+ image[i][j][0] = 200;
+ image[i][j][1] = 200;
+ image[i][j][2] = 200;
+ image[i][j][3] = 255;
+ }
+ }
+ }
+
+ glActiveTexture(GL_TEXTURE0); /* unit 0 */
+ glBindTexture(GL_TEXTURE_2D, 42);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, SZ, SZ, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE, image);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, Filter);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, Filter);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+ cropRect[0] = 0;
+ cropRect[1] = 0;
+ cropRect[2] = SZ;
+ cropRect[3] = SZ;
+ glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, cropRect);
+#undef SZ
+}
+
+
+
+static void
+init(void)
+{
+ const char *ext = (char *) glGetString(GL_EXTENSIONS);
+
+ if (!strstr(ext, "GL_OES_draw_texture")) {
+ fprintf(stderr, "Sorry, this program requires GL_OES_draw_texture");
+ exit(1);
+ }
+
+ glClearColor(0.4, 0.4, 0.4, 0.0);
+
+ make_smile_texture();
+ glEnable(GL_TEXTURE_2D);
+}
+
+
+/*
+ * 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_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);
+ }
+
+ assert(config);
+ assert(num_configs > 0);
+
+ 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);
+ }
+
+ eglBindAPI(EGL_OPENGL_ES_API);
+
+ 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)
+{
+ int anim = 0;
+
+ while (1) {
+ int redraw = 0;
+
+ if (!anim || XPending(dpy)) {
+ 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_posx -= 1.0;
+ }
+ else if (code == XK_Right) {
+ view_posx += 1.0;
+ }
+ else if (code == XK_Up) {
+ view_posy += 1.0;
+ }
+ else if (code == XK_Down) {
+ view_posy -= 1.0;
+ }
+ else {
+ r = XLookupString(&event.xkey, buffer, sizeof(buffer),
+ NULL, NULL);
+ if (buffer[0] == ' ') {
+ anim = !anim;
+ }
+ else if (buffer[0] == 'w') {
+ width -= 1.0f;
+ }
+ else if (buffer[0] == 'W') {
+ width += 1.0f;
+ }
+ else if (buffer[0] == 'h') {
+ height -= 1.0f;
+ }
+ else if (buffer[0] == 'H') {
+ height += 1.0f;
+ }
+ else if (buffer[0] == 27) {
+ /* escape */
+ return;
+ }
+ }
+ }
+ redraw = 1;
+ break;
+ default:
+ ; /*no-op*/
+ }
+ }
+
+ if (anim) {
+ view_posx += 1.0;
+ view_posy += 2.0;
+ redraw = 1;
+ }
+
+ if (redraw) {
+ draw();
+ eglSwapBuffers(egl_dpy, egl_surf);
+ }
+ }
+}
+
+
+static void
+usage(void)
+{
+ printf("Usage:\n");
+ printf(" -display <displayname> set the display to run on\n");
+ printf(" -info display OpenGL renderer info\n");
+}
+
+
+int
+main(int argc, char *argv[])
+{
+ const int winWidth = 400, winHeight = 300;
+ 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;
+
+ 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,
+ "drawtex", 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) {
+ printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+ printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
+ printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
+ printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
+ }
+
+ 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;
+}