1 files changed, 321 insertions, 0 deletions
diff --git a/src/egl/drivers/demo/demo.c b/src/egl/drivers/demo/demo.c
new file mode 100644
index 000000000..4c08ac569
--- /dev/null
+++ b/src/egl/drivers/demo/demo.c
@@ -0,0 +1,321 @@
+/*
+ * Sample driver: Demo
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "eglconfig.h"
+#include "eglcontext.h"
+#include "egldisplay.h"
+#include "egldriver.h"
+#include "eglglobals.h"
+#include "eglmode.h"
+#include "eglscreen.h"
+#include "eglsurface.h"
+
+
+/**
+ * Demo driver-specific driver class derived from _EGLDriver
+ */
+typedef struct demo_driver
+{
+   _EGLDriver Base;  /* base class/object */
+   GLuint DemoStuff;
+} DemoDriver;
+
+#define DEMO_DRIVER(D) ((DemoDriver *) (D))
+
+
+/**
+ * Demo driver-specific surface class derived from _EGLSurface
+ */
+typedef struct demo_surface
+{
+   _EGLSurface Base;  /* base class/object */
+   GLuint DemoStuff;
+} DemoSurface;
+
+
+/**
+ * Demo driver-specific context class derived from _EGLContext
+ */
+typedef struct demo_context
+{
+   _EGLContext Base;  /* base class/object */
+   GLuint DemoStuff;
+} DemoContext;
+
+
+
+static EGLBoolean
+demoInitialize(_EGLDriver *drv, EGLDisplay dpy, EGLint *major, EGLint *minor)
+{
+   _EGLDisplay *disp = _eglLookupDisplay(dpy);
+   _EGLScreen *scrn;
+   EGLint i;
+
+   /* Create a screen */
+   scrn = calloc(1, sizeof(*scrn));
+   _eglAddScreen(disp, scrn);
+
+   /* Create the screen's modes - silly example */
+   _eglAddMode(scrn, 1600, 1200, 72 * 1000, "1600x1200-72");
+   _eglAddMode(scrn, 1280, 1024, 72 * 1000, "1280x1024-70");
+   _eglAddMode(scrn, 1280, 1024, 70 * 1000, "1280x1024-70");
+   _eglAddMode(scrn, 1024,  768, 72 * 1000, "1024x768-72");
+
+   /* Create the display's visual configs - silly example */
+   for (i = 0; i < 4; i++) {
+      _EGLConfig config;
+      _eglInitConfig(&config, i + 1);
+      _eglSetConfigAttrib(&config, EGL_RED_SIZE, 8);
+      _eglSetConfigAttrib(&config, EGL_GREEN_SIZE, 8);
+      _eglSetConfigAttrib(&config, EGL_BLUE_SIZE, 8);
+      _eglSetConfigAttrib(&config, EGL_ALPHA_SIZE, 8);
+      _eglSetConfigAttrib(&config, EGL_BUFFER_SIZE, 32);
+      if (i & 1) {
+         _eglSetConfigAttrib(&config, EGL_DEPTH_SIZE, 32);
+      }
+      if (i & 2) {
+         _eglSetConfigAttrib(&config, EGL_STENCIL_SIZE, 8);
+      }
+      _eglSetConfigAttrib(&config, EGL_SURFACE_TYPE,
+                          (EGL_WINDOW_BIT | EGL_PIXMAP_BIT | EGL_PBUFFER_BIT));
+      _eglAddConfig(disp, &config);
+   }
+
+   drv->Initialized = EGL_TRUE;
+
+   *major = 1;
+   *minor = 0;
+
+   return EGL_TRUE;
+}
+
+
+static EGLBoolean
+demoTerminate(_EGLDriver *drv, EGLDisplay dpy)
+{
+   /*DemoDriver *demo = DEMO_DRIVER(dpy);*/
+   free(drv);
+   return EGL_TRUE;
+}
+
+
+static DemoContext *
+LookupDemoContext(EGLContext ctx)
+{
+   _EGLContext *c = _eglLookupContext(ctx);
+   return (DemoContext *) c;
+}
+
+
+static DemoSurface *
+LookupDemoSurface(EGLSurface surf)
+{
+   _EGLSurface *s = _eglLookupSurface(surf);
+   return (DemoSurface *) s;
+}
+
+
+
+static EGLContext
+demoCreateContext(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, EGLContext share_list, const EGLint *attrib_list)
+{
+   _EGLConfig *conf;
+   DemoContext *c;
+   _EGLDisplay *disp = _eglLookupDisplay(dpy);
+   int i;
+
+   conf = _eglLookupConfig(drv, dpy, config);
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, "eglCreateContext");
+      return EGL_NO_CONTEXT;
+   }
+
+   for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
+      switch (attrib_list[i]) {
+         /* no attribs defined for now */
+      default:
+         _eglError(EGL_BAD_ATTRIBUTE, "eglCreateContext");
+         return EGL_NO_CONTEXT;
+      }
+   }
+
+   c = (DemoContext *) calloc(1, sizeof(DemoContext));
+   if (!c)
+      return EGL_NO_CONTEXT;
+
+   _eglInitContext(&c->Base);
+   c->Base.Display = disp;
+   c->Base.Config = conf;
+   c->Base.DrawSurface = EGL_NO_SURFACE;
+   c->Base.ReadSurface = EGL_NO_SURFACE;
+   c->DemoStuff = 1;
+   printf("demoCreateContext\n");
+
+   /* generate handle and insert into hash table */
+   _eglSaveContext(&c->Base);
+   assert(c->Base.Handle);
+
+   return c->Base.Handle;
+}
+
+
+static EGLSurface
+demoCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, NativeWindowType window, const EGLint *attrib_list)
+{
+   int i;
+   for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
+      switch (attrib_list[i]) {
+         /* no attribs at this time */
+      default:
+         _eglError(EGL_BAD_ATTRIBUTE, "eglCreateWindowSurface");
+         return EGL_NO_SURFACE;
+      }
+   }
+   printf("eglCreateWindowSurface()\n");
+   /* XXX unfinished */
+
+   return EGL_NO_SURFACE;
+}
+
+
+static EGLSurface
+demoCreatePixmapSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, NativePixmapType pixmap, const EGLint *attrib_list)
+{
+   _EGLConfig *conf;
+   EGLint i;
+
+   conf = _eglLookupConfig(drv, dpy, config);
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, "eglCreatePixmapSurface");
+      return EGL_NO_SURFACE;
+   }
+
+   for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
+      switch (attrib_list[i]) {
+         /* no attribs at this time */
+      default:
+         _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePixmapSurface");
+         return EGL_NO_SURFACE;
+      }
+   }
+
+   if (conf->Attrib[EGL_SURFACE_TYPE - FIRST_ATTRIB] == 0) {
+      _eglError(EGL_BAD_MATCH, "eglCreatePixmapSurface");
+      return EGL_NO_SURFACE;
+   }
+
+   printf("eglCreatePixmapSurface()\n");
+   return EGL_NO_SURFACE;
+}
+
+
+static EGLSurface
+demoCreatePbufferSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
+                         const EGLint *attrib_list)
+{
+   DemoSurface *surf = (DemoSurface *) calloc(1, sizeof(DemoSurface));
+   if (!surf)
+      return EGL_NO_SURFACE;
+
+   if (_eglInitPbufferSurface(&surf->Base, drv, dpy, config, attrib_list)
+       == EGL_NO_SURFACE) {
+      free(surf);
+      return EGL_NO_SURFACE;
+   }
+
+   /* a real driver would allocate the pbuffer memory here */
+
+   return surf->Base.Handle;
+}
+
+
+static EGLBoolean
+demoDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface)
+{
+   DemoSurface *fs = LookupDemoSurface(surface);
+   _eglRemoveSurface(&fs->Base);
+   if (fs->Base.IsBound) {
+      fs->Base.DeletePending = EGL_TRUE;
+   }
+   else {
+      free(fs);
+   }
+   return EGL_TRUE;
+}
+
+
+static EGLBoolean
+demoDestroyContext(_EGLDriver *drv, EGLDisplay dpy, EGLContext context)
+{
+   DemoContext *fc = LookupDemoContext(context);
+   _eglRemoveContext(&fc->Base);
+   if (fc->Base.IsBound) {
+      fc->Base.DeletePending = EGL_TRUE;
+   }
+   else {
+      free(fc);
+   }
+   return EGL_TRUE;
+}
+
+
+static EGLBoolean
+demoMakeCurrent(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext context)
+{
+   /*DemoDriver *demo = DEMO_DRIVER(dpy);*/
+   DemoSurface *readSurf = LookupDemoSurface(read);
+   DemoSurface *drawSurf = LookupDemoSurface(draw);
+   DemoContext *ctx = LookupDemoContext(context);
+   EGLBoolean b;
+
+   b = _eglMakeCurrent(drv, dpy, draw, read, context);
+   if (!b)
+      return EGL_FALSE;
+
+   /* XXX this is where we'd do the hardware context switch */
+   (void) drawSurf;
+   (void) readSurf;
+   (void) ctx;
+
+   printf("eglMakeCurrent()\n");
+   return EGL_TRUE;
+}
+
+
+/**
+ * The bootstrap function.  Return a new DemoDriver object and
+ * plug in API functions.
+ */
+_EGLDriver *
+_eglMain(_EGLDisplay *dpy)
+{
+   DemoDriver *demo;
+
+   demo = (DemoDriver *) calloc(1, sizeof(DemoDriver));
+   if (!demo) {
+      return NULL;
+   }
+
+   /* First fill in the dispatch table with defaults */
+   _eglInitDriverFallbacks(&demo->Base);
+   /* then plug in our Demo-specific functions */
+   demo->Base.Initialize = demoInitialize;
+   demo->Base.Terminate = demoTerminate;
+   demo->Base.CreateContext = demoCreateContext;
+   demo->Base.MakeCurrent = demoMakeCurrent;
+   demo->Base.CreateWindowSurface = demoCreateWindowSurface;
+   demo->Base.CreatePixmapSurface = demoCreatePixmapSurface;
+   demo->Base.CreatePbufferSurface = demoCreatePbufferSurface;
+   demo->Base.DestroySurface = demoDestroySurface;
+   demo->Base.DestroyContext = demoDestroyContext;
+
+   /* enable supported extensions */
+   demo->Base.MESA_screen_surface = EGL_TRUE;
+   demo->Base.MESA_copy_context = EGL_TRUE;
+
+   return &demo->Base;
+}