Add glXAllocateMemoryMESA demo app using ycbcr...

add girl2.rgb which is a slightly resized girl.rgb so client texturing works

diff --git a/progs/images/girl2.rgb b/progs/images/girl2.rgb
new file mode 100644 (file)
index 0000000..d5e557d
Binary files /dev/null and b/progs/images/girl2.rgb differ

diff --git a/progs/xdemos/Makefile b/progs/xdemos/Makefile
index 5e2b9bb..cc2dd57 100644 (file)
--- a/progs/xdemos/Makefile
+++ b/progs/xdemos/Makefile
@@ -24,7 +24,8 @@ PROGS = glthreads \
        wincopy \
        xdemo \
        xfont \
-       xrotfontdemo
+       xrotfontdemo \
+       yuvrect_client
 
 
 

diff --git a/progs/xdemos/yuvrect_client.c b/progs/xdemos/yuvrect_client.c
new file mode 100644 (file)
index 0000000..381b0bb
--- /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;
+}