Add glXAllocateMemoryMESA demo app using ycbcr...
add girl2.rgb which is a slightly resized girl.rgb so client texturing works
This commit is contained in:
Dave Airlie
parent
9bfd9582d4
commit
c68233cb35
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@ -24,7 +24,8 @@ PROGS = glthreads \
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wincopy \
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xdemo \
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xfont \
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xrotfontdemo
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xrotfontdemo \
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yuvrect_client
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@ -0,0 +1,326 @@
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/*
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* Test the GL_NV_texture_rectangle and GL_MESA_ycrcb_texture extensions and GLX_MESA_allocate-memory
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*
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* Dave Airlie - Feb 2005
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*/
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#include <assert.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <X11/Xlib.h>
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#include <X11/keysym.h>
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#define GL_GLEXT_PROTOTYPES
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#include <GL/glx.h>
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#include "../util/readtex.c" /* I know, this is a hack. */
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#define TEXTURE_FILE "../images/girl.rgb"
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static GLfloat Xrot = 0, Yrot = 0, Zrot = 0;
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static GLint ImgWidth, ImgHeight;
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static GLushort *ImageYUV = NULL;
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static void *glx_memory;
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static void DrawObject(void)
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{
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glBegin(GL_QUADS);
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glTexCoord2f(0, 0);
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glVertex2f(-1.0, -1.0);
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glTexCoord2f(ImgWidth, 0);
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glVertex2f(1.0, -1.0);
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glTexCoord2f(ImgWidth, ImgHeight);
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glVertex2f(1.0, 1.0);
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glTexCoord2f(0, ImgHeight);
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glVertex2f(-1.0, 1.0);
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glEnd();
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}
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static void scr_Display( void )
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{
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glClear( GL_COLOR_BUFFER_BIT );
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glPushMatrix();
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glRotatef(Xrot, 1.0, 0.0, 0.0);
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glRotatef(Yrot, 0.0, 1.0, 0.0);
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glRotatef(Zrot, 0.0, 0.0, 1.0);
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DrawObject();
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glPopMatrix();
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}
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static void Reshape( int width, int height )
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{
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glViewport( 0, 0, width, height );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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glTranslatef( 0.0, 0.0, -15.0 );
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}
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static int queryClient(Display *dpy, int screen)
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{
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#ifdef GLX_MESA_allocate_memory
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char *extensions;
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extensions = (char *)glXQueryExtensionsString(dpy, screen);
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if (!extensions || !strstr(extensions,"GLX_MESA_allocate_memory")) {
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return 0;
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}
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return 1;
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#else
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return 0;
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#endif
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}
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static int
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query_extension(char* extName) {
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char *p = (char *) glGetString(GL_EXTENSIONS);
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char *end = p + strlen(p);
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while (p < end) {
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int n = strcspn(p, " ");
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if ((strlen(extName) == n) && (strncmp(extName, p, n) == 0))
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return GL_TRUE;
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p += (n + 1);
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}
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return GL_FALSE;
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}
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static void Init( int argc, char *argv[] , Display *dpy, int screen, Window win)
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{
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GLuint texObj = 100;
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const char *file;
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void *glx_memory;
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if (!query_extension("GL_NV_texture_rectangle")) {
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printf("Sorry, GL_NV_texture_rectangle is required\n");
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exit(0);
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}
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if (!query_extension("GL_MESA_ycbcr_texture")) {
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printf("Sorry, GL_MESA_ycbcr_texture is required\n");
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exit(0);
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}
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if (!queryClient(dpy, screen)) {
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printf("Sorry, GLX_MESA_allocate_memory is required\n");
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exit(0);
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}
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glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, 1);
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glBindTexture(GL_TEXTURE_RECTANGLE_NV, texObj);
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#ifdef LINEAR_FILTER
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/* linear filtering looks much nicer but is much slower for Mesa */
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glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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#else
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glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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#endif
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if (argc > 1)
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file = argv[1];
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else
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file = TEXTURE_FILE;
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ImageYUV = LoadYUVImage(file, &ImgWidth, &ImgHeight);
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if (!ImageYUV) {
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printf("Couldn't read %s\n", TEXTURE_FILE);
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exit(0);
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}
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glx_memory = glXAllocateMemoryMESA(dpy, screen, ImgWidth * ImgHeight * 2, 0, 0 ,0);
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if (!glx_memory)
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{
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fprintf(stderr,"Failed to allocate MESA memory\n");
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exit(-1);
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}
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memcpy(glx_memory, ImageYUV, ImgWidth * ImgHeight * 2);
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printf("Image: %dx%d\n", ImgWidth, ImgHeight);
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glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0,
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GL_YCBCR_MESA, ImgWidth, ImgHeight, 0,
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GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_APPLE, glx_memory);
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assert(glGetError() == GL_NO_ERROR);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glEnable(GL_TEXTURE_RECTANGLE_NV);
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glShadeModel(GL_FLAT);
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glClearColor(0.3, 0.3, 0.4, 1.0);
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}
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/*
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* Create an RGB, double-buffered window.
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* Return the window and context handles.
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*/
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static void
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make_window( Display *dpy, const char *name,
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int x, int y, int width, int height,
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Window *winRet, GLXContext *ctxRet)
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{
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int attribs[] = { GLX_RGBA,
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GLX_RED_SIZE, 1,
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GLX_GREEN_SIZE, 1,
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GLX_BLUE_SIZE, 1,
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GLX_DOUBLEBUFFER,
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GLX_DEPTH_SIZE, 1,
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None };
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int scrnum;
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XSetWindowAttributes attr;
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unsigned long mask;
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Window root;
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Window win;
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GLXContext ctx;
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XVisualInfo *visinfo;
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scrnum = DefaultScreen( dpy );
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root = RootWindow( dpy, scrnum );
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visinfo = glXChooseVisual( dpy, scrnum, attribs );
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if (!visinfo) {
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printf("Error: couldn't get an RGB, Double-buffered visual\n");
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exit(1);
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}
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/* window attributes */
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attr.background_pixel = 0;
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attr.border_pixel = 0;
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attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
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attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
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attr.override_redirect = 0;
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mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask | CWOverrideRedirect;
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win = XCreateWindow( dpy, root, 0, 0, width, height,
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0, visinfo->depth, InputOutput,
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visinfo->visual, mask, &attr );
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/* set hints and properties */
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{
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XSizeHints sizehints;
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sizehints.x = x;
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sizehints.y = y;
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sizehints.width = width;
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sizehints.height = height;
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sizehints.flags = USSize | USPosition;
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XSetNormalHints(dpy, win, &sizehints);
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XSetStandardProperties(dpy, win, name, name,
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None, (char **)NULL, 0, &sizehints);
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}
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ctx = glXCreateContext( dpy, visinfo, NULL, True );
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if (!ctx) {
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printf("Error: glXCreateContext failed\n");
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exit(1);
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}
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XFree(visinfo);
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*winRet = win;
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*ctxRet = ctx;
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}
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static void
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event_loop(Display *dpy, Window win)
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{
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while (1) {
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while (XPending(dpy) > 0) {
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XEvent event;
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XNextEvent(dpy, &event);
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switch (event.type) {
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case Expose:
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/* we'll redraw below */
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break;
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case ConfigureNotify:
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Reshape(event.xconfigure.width, event.xconfigure.height);
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break;
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case KeyPress:
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{
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char buffer[10];
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int r, code;
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code = XLookupKeysym(&event.xkey, 0);
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r = XLookupString(&event.xkey, buffer, sizeof(buffer),
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NULL, NULL);
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if (buffer[0] == 27) {
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/* escape */
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return;
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}
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}
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}
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}
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}
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}
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int
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main(int argc, char *argv[])
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{
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Display *dpy;
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Window win;
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GLXContext ctx;
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char *dpyName = NULL;
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GLboolean printInfo = GL_FALSE;
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int i;
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for (i = 1; i < argc; i++) {
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if (strcmp(argv[i], "-display") == 0) {
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dpyName = argv[i+1];
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i++;
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}
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else if (strcmp(argv[i], "-info") == 0) {
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printInfo = GL_TRUE;
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}
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else
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printf("Warrning: unknown parameter: %s\n", argv[i]);
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}
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dpy = XOpenDisplay(dpyName);
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if (!dpy) {
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printf("Error: couldn't open display %s\n",
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dpyName ? dpyName : getenv("DISPLAY"));
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return -1;
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}
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make_window(dpy, "yuvrect_client", 0, 0, 300, 300, &win, &ctx);
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XMapWindow(dpy, win);
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glXMakeCurrent(dpy, win, ctx);
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if (printInfo) {
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printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
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printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
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printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
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printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
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}
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Init(argc, argv, dpy, DefaultScreen(dpy), win);
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scr_Display();
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glXSwapBuffers(dpy, win);
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event_loop(dpy, win);
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glXFreeMemoryMESA(dpy, DefaultScreen(dpy), glx_memory);
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glXDestroyContext(dpy, ctx);
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XDestroyWindow(dpy, win);
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XCloseDisplay(dpy);
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return 0;
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}
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