diff options
Diffstat (limited to 'progs/egl/demo2.c')
| -rw-r--r-- | progs/egl/demo2.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/progs/egl/demo2.c b/progs/egl/demo2.c new file mode 100644 index 00000000000..17bbca61587 --- /dev/null +++ b/progs/egl/demo2.c @@ -0,0 +1,190 @@ +/* + * Exercise EGL API functions + */ + +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <GLES/egl.h> + +/*#define FRONTBUFFER*/ + +static void _subset_Rectf(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2) +{ + glBegin( GL_QUADS ); + glVertex2f( x1, y1 ); + glVertex2f( x2, y1 ); + glVertex2f( x2, y2 ); + glVertex2f( x1, y2 ); + glEnd(); +} + + +static void redraw(EGLDisplay dpy, EGLSurface surf, int rot) +{ + printf("Redraw event\n"); + +#ifdef FRONTBUFFER + glDrawBuffer( GL_FRONT ); +#else + glDrawBuffer( GL_BACK ); +#endif + + glClearColor( rand()/(float)RAND_MAX, + rand()/(float)RAND_MAX, + rand()/(float)RAND_MAX, + 1); + + glClear( GL_COLOR_BUFFER_BIT ); + + glColor3f( rand()/(float)RAND_MAX, + rand()/(float)RAND_MAX, + rand()/(float)RAND_MAX ); + glPushMatrix(); + glRotatef(rot, 0, 0, 1); + glScalef(.5, .5, .5); + _subset_Rectf( -1, -1, 1, 1 ); + glPopMatrix(); + +#ifdef FRONTBUFFER + glFlush(); +#else + eglSwapBuffers( dpy, surf ); +#endif + glFinish(); +} + + +/** + * Test EGL_MESA_screen_surface functions + */ +static void +TestScreens(EGLDisplay dpy) +{ +#define MAX 8 + EGLScreenMESA screens[MAX]; + EGLint numScreens; + EGLint i; + + eglGetScreensMESA(dpy, screens, MAX, &numScreens); + printf("Found %d screens\n", numScreens); + for (i = 0; i < numScreens; i++) { + printf(" Screen %d handle: %d\n", i, (int) screens[i]); + } +} + + +int +main(int argc, char *argv[]) +{ + int maj, min; + EGLContext ctx; + EGLSurface pbuffer, screen_surf; + EGLConfig configs[10]; + EGLint numConfigs, i; + EGLBoolean b; + const EGLint pbufAttribs[] = { + EGL_WIDTH, 500, + EGL_HEIGHT, 500, + EGL_NONE + }; + const EGLint screenAttribs[] = { + EGL_WIDTH, 1024, + EGL_HEIGHT, 768, + EGL_NONE + }; + EGLModeMESA mode; + EGLScreenMESA screen; + EGLint count; + + /* + EGLDisplay d = eglGetDisplay(EGL_DEFAULT_DISPLAY); + */ + EGLDisplay d = eglGetDisplay("!fb_dri"); + assert(d); + + if (!eglInitialize(d, &maj, &min)) { + printf("demo: eglInitialize failed\n"); + exit(1); + } + + printf("EGL version = %d.%d\n", maj, min); + printf("EGL_VENDOR = %s\n", eglQueryString(d, EGL_VENDOR)); + + eglGetConfigs(d, configs, 10, &numConfigs); + printf("Got %d EGL configs:\n", numConfigs); + for (i = 0; i < numConfigs; i++) { + EGLint id, red, depth; + eglGetConfigAttrib(d, configs[i], EGL_CONFIG_ID, &id); + eglGetConfigAttrib(d, configs[i], EGL_RED_SIZE, &red); + eglGetConfigAttrib(d, configs[i], EGL_DEPTH_SIZE, &depth); + printf("%2d: Red Size = %d Depth Size = %d\n", id, red, depth); + } + + eglGetScreensMESA(d, &screen, 1, &count); + eglGetModesMESA(d, screen, &mode, 1, &count); + + ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL); + if (ctx == EGL_NO_CONTEXT) { + printf("failed to create context\n"); + return 0; + } + + pbuffer = eglCreatePbufferSurface(d, configs[0], pbufAttribs); + if (pbuffer == EGL_NO_SURFACE) { + printf("failed to create pbuffer\n"); + return 0; + } + + b = eglMakeCurrent(d, pbuffer, pbuffer, ctx); + if (!b) { + printf("make current failed\n"); + return 0; + } + + b = eglMakeCurrent(d, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); + + screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs); + if (screen_surf == EGL_NO_SURFACE) { + printf("failed to create screen surface\n"); + return 0; + } + + eglShowScreenSurfaceMESA(d, screen, screen_surf, mode); + + b = eglMakeCurrent(d, screen_surf, screen_surf, ctx); + if (!b) { + printf("make current failed\n"); + return 0; + } + + glViewport(0, 0, 1024, 768); + glDrawBuffer( GL_FRONT ); + + glClearColor( 0, + 1.0, + 0, + 1); + + glClear( GL_COLOR_BUFFER_BIT ); + + + TestScreens(d); + + glShadeModel( GL_FLAT ); + + for (i = 0; i < 6; i++) { + redraw(d, screen_surf, i*10 ); + + printf("sleep(1)\n"); + sleep(1); + } + + eglDestroySurface(d, pbuffer); + eglDestroyContext(d, ctx); + eglTerminate(d); + + return 0; +} |