diff options
Diffstat (limited to 'progs/es1/xegl/render_tex.c')
| -rw-r--r-- | progs/es1/xegl/render_tex.c | 659 |
1 files changed, 0 insertions, 659 deletions
diff --git a/progs/es1/xegl/render_tex.c b/progs/es1/xegl/render_tex.c deleted file mode 100644 index 0200fa4cb06..00000000000 --- a/progs/es1/xegl/render_tex.c +++ /dev/null @@ -1,659 +0,0 @@ -/* - * 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> - - -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; -} |