+++ /dev/null
-/*
- * Copyright (C) 2008 Tunsgten Graphics,Inc. All Rights Reserved.
- */
-
-/*
- * Test EGL render to texture.
- * Brian Paul
- * August 2008
- */
-
-
-#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>
-
-
-#ifndef M_PI
-#define M_PI 3.14159265
-#endif
-
-static int TexWidth = 256, TexHeight = 256;
-
-static int WinWidth = 300, WinHeight = 300;
-
-static GLfloat view_rotx = 0.0, view_roty = 0.0, view_rotz = 0.0;
-
-static GLuint DotTexture, RenderTexture;
-
-
-static void
-Normal(GLfloat *n, GLfloat nx, GLfloat ny, GLfloat nz)
-{
- n[0] = nx;
- n[1] = ny;
- n[2] = nz;
-}
-
-static void
-Vertex(GLfloat *v, GLfloat vx, GLfloat vy, GLfloat vz)
-{
- v[0] = vx;
- v[1] = vy;
- v[2] = vz;
-}
-
-static void
-Texcoord(GLfloat *v, GLfloat s, GLfloat t)
-{
- v[0] = s;
- v[1] = t;
-}
-
-
-/* Borrowed from glut, adapted */
-static void
-draw_torus(GLfloat r, GLfloat R, GLint nsides, GLint rings)
-{
- int i, j;
- GLfloat theta, phi, theta1;
- GLfloat cosTheta, sinTheta;
- GLfloat cosTheta1, sinTheta1;
- GLfloat ringDelta, sideDelta;
- GLfloat varray[100][3], narray[100][3], tarray[100][2];
- int vcount;
-
- glVertexPointer(3, GL_FLOAT, 0, varray);
- glNormalPointer(GL_FLOAT, 0, narray);
- glTexCoordPointer(2, GL_FLOAT, 0, tarray);
- glEnableClientState(GL_VERTEX_ARRAY);
- glEnableClientState(GL_NORMAL_ARRAY);
- glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-
- ringDelta = 2.0 * M_PI / rings;
- sideDelta = 2.0 * M_PI / nsides;
-
- theta = 0.0;
- cosTheta = 1.0;
- sinTheta = 0.0;
- for (i = rings - 1; i >= 0; i--) {
- theta1 = theta + ringDelta;
- cosTheta1 = cos(theta1);
- sinTheta1 = sin(theta1);
-
- vcount = 0; /* glBegin(GL_QUAD_STRIP); */
-
- phi = 0.0;
- for (j = nsides; j >= 0; j--) {
- GLfloat s0, s1, t;
- GLfloat cosPhi, sinPhi, dist;
-
- phi += sideDelta;
- cosPhi = cos(phi);
- sinPhi = sin(phi);
- dist = R + r * cosPhi;
-
- s0 = 20.0 * theta / (2.0 * M_PI);
- s1 = 20.0 * theta1 / (2.0 * M_PI);
- t = 8.0 * phi / (2.0 * M_PI);
-
- Normal(narray[vcount], cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
- Texcoord(tarray[vcount], s1, t);
- Vertex(varray[vcount], cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
- vcount++;
-
- Normal(narray[vcount], cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
- Texcoord(tarray[vcount], s0, t);
- Vertex(varray[vcount], cosTheta * dist, -sinTheta * dist, r * sinPhi);
- vcount++;
- }
-
- /*glEnd();*/
- assert(vcount <= 100);
- glDrawArrays(GL_TRIANGLE_STRIP, 0, vcount);
-
- theta = theta1;
- cosTheta = cosTheta1;
- sinTheta = sinTheta1;
- }
-
- glDisableClientState(GL_VERTEX_ARRAY);
- glDisableClientState(GL_NORMAL_ARRAY);
- glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-}
-
-
-static void
-draw_torus_to_texture(void)
-{
- glViewport(0, 0, TexWidth, TexHeight);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustumf(-1, 1, -1, 1, 5.0, 60.0);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(0.0, 0.0, -15.0);
-
- glClearColor(0.4, 0.4, 0.4, 0.0);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glBindTexture(GL_TEXTURE_2D, DotTexture);
-
- glEnable(GL_LIGHTING);
-
- glPushMatrix();
- glRotatef(view_roty, 0, 1, 0);
- glScalef(0.5, 0.5, 0.5);
-
- draw_torus(1.0, 3.0, 30, 60);
-
- glPopMatrix();
-
- glDisable(GL_LIGHTING);
-
-#if 0
- glBindTexture(GL_TEXTURE_2D, RenderTexture);
- glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, TexWidth, TexHeight);
-#endif
-
- glFinish();
-}
-
-
-static void
-draw_textured_quad(void)
-{
- GLfloat ar = (GLfloat) WinWidth / (GLfloat) WinHeight;
-
- glViewport(0, 0, WinWidth, WinHeight);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustumf(-ar, ar, -1, 1, 5.0, 60.0);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(0.0, 0.0, -8.0);
-
- glClearColor(0.4, 0.4, 1.0, 0.0);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glBindTexture(GL_TEXTURE_2D, RenderTexture);
-
- glPushMatrix();
- glRotatef(view_rotx, 1, 0, 0);
- glRotatef(view_rotz, 0, 0, 1);
-
- {
- static const GLfloat texcoord[4][2] = {
- { 0, 0 }, { 1, 0 }, { 0, 1 }, { 1, 1 }
- };
- static const GLfloat vertex[4][2] = {
- { -1, -1 }, { 1, -1 }, { -1, 1 }, { 1, 1 }
- };
-
- glVertexPointer(2, GL_FLOAT, 0, vertex);
- glTexCoordPointer(2, GL_FLOAT, 0, texcoord);
- glEnableClientState(GL_VERTEX_ARRAY);
- glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-
- glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
-
- glDisableClientState(GL_VERTEX_ARRAY);
- glDisableClientState(GL_TEXTURE_COORD_ARRAY);
- }
-
- glPopMatrix();
-}
-
-
-
-static void
-draw(EGLDisplay egl_dpy, EGLSurface egl_surf, EGLSurface egl_pbuf,
- EGLContext egl_ctx)
-{
- /*printf("Begin draw\n");*/
-
- /* first draw torus to pbuffer /texture */
-#if 01
- if (!eglMakeCurrent(egl_dpy, egl_pbuf, egl_pbuf, egl_ctx)) {
-#else
- if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
-#endif
- printf("Error: eglMakeCurrent(pbuf) failed\n");
- return;
- }
- draw_torus_to_texture();
-
- /* draw textured quad to window */
- if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) {
- printf("Error: eglMakeCurrent(pbuffer) failed\n");
- return;
- }
-
- glBindTexture(GL_TEXTURE_2D, RenderTexture);
- eglBindTexImage(egl_dpy, egl_pbuf, EGL_BACK_BUFFER);
- draw_textured_quad();
- eglReleaseTexImage(egl_dpy, egl_pbuf, EGL_BACK_BUFFER);
-
- eglSwapBuffers(egl_dpy, egl_surf);
-
- /*printf("End draw\n");*/
-}
-
-
-
-static void
-make_dot_texture(void)
-{
-#define SZ 64
- GLenum Filter = GL_LINEAR;
- GLubyte image[SZ][SZ][4];
- GLuint i, j;
-
- for (i = 0; i < SZ; i++) {
- for (j = 0; j < SZ; j++) {
- GLfloat d = (i - SZ/2) * (i - SZ/2) + (j - SZ/2) * (j - SZ/2);
- d = sqrt(d);
- if (d < SZ/3) {
- image[i][j][0] = 255;
- image[i][j][1] = 255;
- image[i][j][2] = 255;
- image[i][j][3] = 255;
- }
- else {
- image[i][j][0] = 127;
- image[i][j][1] = 127;
- image[i][j][2] = 127;
- image[i][j][3] = 255;
- }
- }
- }
-
- glGenTextures(1, &DotTexture);
- glBindTexture(GL_TEXTURE_2D, DotTexture);
- 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);
-#undef SZ
-}
-
-
-static void
-make_render_texture(void)
-{
- GLenum Filter = GL_LINEAR;
- glGenTextures(1, &RenderTexture);
- glBindTexture(GL_TEXTURE_2D, RenderTexture);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, TexWidth, TexHeight, 0,
- GL_RGBA, GL_UNSIGNED_BYTE, NULL);
- 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);
-}
-
-
-static void
-init(void)
-{
- static const GLfloat red[4] = {1, 0, 0, 0};
- static const GLfloat white[4] = {1.0, 1.0, 1.0, 1.0};
- static const GLfloat diffuse[4] = {0.7, 0.7, 0.7, 1.0};
- static const GLfloat specular[4] = {0.001, 0.001, 0.001, 1.0};
- static const GLfloat pos[4] = {20, 20, 50, 1};
-
- glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red);
- glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, white);
- glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 9.0);
-
- glEnable(GL_LIGHT0);
- glLightfv(GL_LIGHT0, GL_POSITION, pos);
- glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
- glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
-
- glEnable(GL_DEPTH_TEST);
-
- make_dot_texture();
- make_render_texture();
-
- printf("DotTexture=%u RenderTexture=%u\n", DotTexture, RenderTexture);
-
- 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_DEPTH_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 EGLSurface
-make_pbuffer(Display *x_dpy, EGLDisplay egl_dpy, int width, int height)
-{
- static const EGLint config_attribs[] = {
- EGL_RED_SIZE, 1,
- EGL_GREEN_SIZE, 1,
- EGL_BLUE_SIZE, 1,
- EGL_DEPTH_SIZE, 1,
- EGL_NONE
- };
- EGLConfig config;
- EGLSurface pbuf;
- EGLint num_configs;
- EGLint pbuf_attribs[15];
- int i = 0;
-
- pbuf_attribs[i++] = EGL_WIDTH;
- pbuf_attribs[i++] = width;
- pbuf_attribs[i++] = EGL_HEIGHT;
- pbuf_attribs[i++] = height;
- pbuf_attribs[i++] = EGL_TEXTURE_FORMAT;
- pbuf_attribs[i++] = EGL_TEXTURE_RGBA;
- pbuf_attribs[i++] = EGL_TEXTURE_TARGET;
- pbuf_attribs[i++] = EGL_TEXTURE_2D;
- pbuf_attribs[i++] = EGL_MIPMAP_TEXTURE;
- pbuf_attribs[i++] = EGL_FALSE;
- pbuf_attribs[i++] = EGL_NONE;
- assert(i <= 15);
-
- if (!eglChooseConfig( egl_dpy, config_attribs, &config, 1, &num_configs)) {
- printf("Error: couldn't get an EGL config for pbuffer\n");
- exit(1);
- }
-
- pbuf = eglCreatePbufferSurface(egl_dpy, config, pbuf_attribs);
-
- return pbuf;
-}
-
-
-static void
-event_loop(Display *dpy, Window win,
- EGLDisplay egl_dpy, EGLSurface egl_surf, EGLSurface egl_pbuf,
- EGLContext egl_ctx)
-{
- 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:
- if (event.xconfigure.window == win) {
- WinWidth = event.xconfigure.width;
- WinHeight = 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] == ' ') {
- anim = !anim;
- }
- else if (buffer[0] == 'z') {
- view_rotz += 5.0;
- }
- else if (buffer[0] == 'Z') {
- view_rotz -= 5.0;
- }
- else if (buffer[0] == 27) {
- /* escape */
- return;
- }
- }
- }
- redraw = 1;
- break;
- default:
- ; /*no-op*/
- }
- }
-
- if (anim) {
- view_rotx += 1.0;
- view_roty += 2.0;
- redraw = 1;
- }
-
- if (redraw) {
- draw(egl_dpy, egl_surf, egl_pbuf, egl_ctx);
- }
- }
-}
-
-
-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[])
-{
- Display *x_dpy;
- Window win;
- EGLSurface egl_surf, egl_pbuf;
- 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,
- "render_tex", 0, 0, WinWidth, WinHeight,
- &win, &egl_ctx, &egl_surf);
-
- egl_pbuf = make_pbuffer(x_dpy, egl_dpy, TexWidth, TexHeight);
- if (!egl_pbuf) {
- printf("Error: eglCreatePBufferSurface() failed\n");
- return -1;
- }
-
- 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();
-
- event_loop(x_dpy, win, egl_dpy, egl_surf, egl_pbuf, egl_ctx);
-
- eglDestroyContext(egl_dpy, egl_ctx);
- eglDestroySurface(egl_dpy, egl_surf);
- eglTerminate(egl_dpy);
-
-
- XDestroyWindow(x_dpy, win);
- XCloseDisplay(x_dpy);
-
- return 0;
-}
projects / mesa.git / blobdiff