diff options
Diffstat (limited to 'progs/xdemos/yuvrect_client.c')
| -rw-r--r-- | progs/xdemos/yuvrect_client.c | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/progs/xdemos/yuvrect_client.c b/progs/xdemos/yuvrect_client.c new file mode 100644 index 00000000000..381b0bb9342 --- /dev/null +++ b/progs/xdemos/yuvrect_client.c @@ -0,0 +1,326 @@ +/* + * Test the GL_NV_texture_rectangle and GL_MESA_ycrcb_texture extensions and GLX_MESA_allocate-memory + * + * Dave Airlie - Feb 2005 + */ + +#include <assert.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <X11/Xlib.h> +#include <X11/keysym.h> +#define GL_GLEXT_PROTOTYPES +#include <GL/glx.h> + +#include "../util/readtex.c" /* I know, this is a hack. */ + +#define TEXTURE_FILE "../images/girl.rgb" + +static GLfloat Xrot = 0, Yrot = 0, Zrot = 0; +static GLint ImgWidth, ImgHeight; +static GLushort *ImageYUV = NULL; +static void *glx_memory; + +static void DrawObject(void) +{ + glBegin(GL_QUADS); + + glTexCoord2f(0, 0); + glVertex2f(-1.0, -1.0); + + glTexCoord2f(ImgWidth, 0); + glVertex2f(1.0, -1.0); + + glTexCoord2f(ImgWidth, ImgHeight); + glVertex2f(1.0, 1.0); + + glTexCoord2f(0, ImgHeight); + glVertex2f(-1.0, 1.0); + + glEnd(); +} + + +static void scr_Display( void ) +{ + glClear( GL_COLOR_BUFFER_BIT ); + + glPushMatrix(); + glRotatef(Xrot, 1.0, 0.0, 0.0); + glRotatef(Yrot, 0.0, 1.0, 0.0); + glRotatef(Zrot, 0.0, 0.0, 1.0); + DrawObject(); + glPopMatrix(); + +} + + +static void Reshape( int width, int height ) +{ + glViewport( 0, 0, width, height ); + glMatrixMode( GL_PROJECTION ); + glLoadIdentity(); + glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 ); + glMatrixMode( GL_MODELVIEW ); + glLoadIdentity(); + glTranslatef( 0.0, 0.0, -15.0 ); +} + +static int queryClient(Display *dpy, int screen) +{ +#ifdef GLX_MESA_allocate_memory + char *extensions; + + extensions = (char *)glXQueryExtensionsString(dpy, screen); + if (!extensions || !strstr(extensions,"GLX_MESA_allocate_memory")) { + return 0; + } + + return 1; +#else + return 0; +#endif +} + +static int +query_extension(char* extName) { + char *p = (char *) glGetString(GL_EXTENSIONS); + char *end = p + strlen(p); + while (p < end) { + int n = strcspn(p, " "); + if ((strlen(extName) == n) && (strncmp(extName, p, n) == 0)) + return GL_TRUE; + p += (n + 1); + } + return GL_FALSE; +} + +static void Init( int argc, char *argv[] , Display *dpy, int screen, Window win) +{ + GLuint texObj = 100; + const char *file; + void *glx_memory; + + if (!query_extension("GL_NV_texture_rectangle")) { + printf("Sorry, GL_NV_texture_rectangle is required\n"); + exit(0); + } + + if (!query_extension("GL_MESA_ycbcr_texture")) { + printf("Sorry, GL_MESA_ycbcr_texture is required\n"); + exit(0); + } + + if (!queryClient(dpy, screen)) { + printf("Sorry, GLX_MESA_allocate_memory is required\n"); + exit(0); + } + + glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, 1); + glBindTexture(GL_TEXTURE_RECTANGLE_NV, texObj); +#ifdef LINEAR_FILTER + /* linear filtering looks much nicer but is much slower for Mesa */ + glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_LINEAR); +#else + glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_NEAREST); +#endif + + if (argc > 1) + file = argv[1]; + else + file = TEXTURE_FILE; + + ImageYUV = LoadYUVImage(file, &ImgWidth, &ImgHeight); + if (!ImageYUV) { + printf("Couldn't read %s\n", TEXTURE_FILE); + exit(0); + } + + glx_memory = glXAllocateMemoryMESA(dpy, screen, ImgWidth * ImgHeight * 2, 0, 0 ,0); + if (!glx_memory) + { + fprintf(stderr,"Failed to allocate MESA memory\n"); + exit(-1); + } + + memcpy(glx_memory, ImageYUV, ImgWidth * ImgHeight * 2); + + printf("Image: %dx%d\n", ImgWidth, ImgHeight); + + glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0, + GL_YCBCR_MESA, ImgWidth, ImgHeight, 0, + GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_APPLE, glx_memory); + + assert(glGetError() == GL_NO_ERROR); + + glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); + + glEnable(GL_TEXTURE_RECTANGLE_NV); + + glShadeModel(GL_FLAT); + glClearColor(0.3, 0.3, 0.4, 1.0); + +} + +/* + * Create an RGB, double-buffered window. + * Return the window and context handles. + */ +static void +make_window( Display *dpy, const char *name, + int x, int y, int width, int height, + Window *winRet, GLXContext *ctxRet) +{ + int attribs[] = { GLX_RGBA, + GLX_RED_SIZE, 1, + GLX_GREEN_SIZE, 1, + GLX_BLUE_SIZE, 1, + GLX_DOUBLEBUFFER, + GLX_DEPTH_SIZE, 1, + None }; + int scrnum; + XSetWindowAttributes attr; + unsigned long mask; + Window root; + Window win; + GLXContext ctx; + XVisualInfo *visinfo; + + scrnum = DefaultScreen( dpy ); + root = RootWindow( dpy, scrnum ); + + visinfo = glXChooseVisual( dpy, scrnum, attribs ); + if (!visinfo) { + printf("Error: couldn't get an RGB, Double-buffered visual\n"); + exit(1); + } + + /* window attributes */ + attr.background_pixel = 0; + attr.border_pixel = 0; + attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone); + attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; + attr.override_redirect = 0; + mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask | CWOverrideRedirect; + + win = XCreateWindow( 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(dpy, win, &sizehints); + XSetStandardProperties(dpy, win, name, name, + None, (char **)NULL, 0, &sizehints); + } + + ctx = glXCreateContext( dpy, visinfo, NULL, True ); + if (!ctx) { + printf("Error: glXCreateContext failed\n"); + exit(1); + } + + XFree(visinfo); + + *winRet = win; + *ctxRet = ctx; +} + + +static void +event_loop(Display *dpy, Window win) +{ + while (1) { + while (XPending(dpy) > 0) { + XEvent event; + XNextEvent(dpy, &event); + switch (event.type) { + case Expose: + /* we'll redraw below */ + break; + case ConfigureNotify: + Reshape(event.xconfigure.width, event.xconfigure.height); + break; + case KeyPress: + { + char buffer[10]; + int r, code; + code = XLookupKeysym(&event.xkey, 0); + r = XLookupString(&event.xkey, buffer, sizeof(buffer), + NULL, NULL); + if (buffer[0] == 27) { + /* escape */ + return; + + } + } + } + } + + } +} + + +int +main(int argc, char *argv[]) +{ + Display *dpy; + Window win; + GLXContext ctx; + char *dpyName = NULL; + GLboolean printInfo = GL_FALSE; + int i; + + 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 + printf("Warrning: unknown parameter: %s\n", argv[i]); + } + + dpy = XOpenDisplay(dpyName); + if (!dpy) { + printf("Error: couldn't open display %s\n", + dpyName ? dpyName : getenv("DISPLAY")); + return -1; + } + + make_window(dpy, "yuvrect_client", 0, 0, 300, 300, &win, &ctx); + XMapWindow(dpy, win); + glXMakeCurrent(dpy, win, ctx); + + 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(argc, argv, dpy, DefaultScreen(dpy), win); + + scr_Display(); + glXSwapBuffers(dpy, win); + event_loop(dpy, win); + + glXFreeMemoryMESA(dpy, DefaultScreen(dpy), glx_memory); + glXDestroyContext(dpy, ctx); + XDestroyWindow(dpy, win); + XCloseDisplay(dpy); + + return 0; +} |