st/egl: Factor driver callbacks to a new file.

Factor all callbacks other than Initialize, Terminate, and GetProcAddress
to egl_g3d_api.c.

1 files changed, 731 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/egl/common/egl_g3d_api.c b/src/gallium/state_trackers/egl/common/egl_g3d_api.c
new file mode 100644
index 0000000000..47dedc7662
--- /dev/null
+++ b/src/gallium/state_trackers/egl/common/egl_g3d_api.c
@@ -0,0 +1,731 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.9
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "egldriver.h"
+#include "eglcurrent.h"
+#include "egllog.h"
+
+#include "pipe/p_screen.h"
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+
+#include "egl_g3d.h"
+#include "egl_g3d_api.h"
+#include "egl_g3d_image.h"
+#include "egl_g3d_st.h"
+#include "native.h"
+
+/**
+ * Return the state tracker for the given context.
+ */
+static struct st_api *
+egl_g3d_choose_st(_EGLDriver *drv, _EGLContext *ctx)
+{
+   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
+   struct st_api *stapi;
+   EGLint idx = -1;
+
+   switch (ctx->ClientAPI) {
+   case EGL_OPENGL_ES_API:
+      switch (ctx->ClientVersion) {
+      case 1:
+         idx = ST_API_OPENGL_ES1;
+         break;
+      case 2:
+         idx = ST_API_OPENGL_ES2;
+         break;
+      default:
+         _eglLog(_EGL_WARNING, "unknown client version %d",
+               ctx->ClientVersion);
+         break;
+      }
+      break;
+   case EGL_OPENVG_API:
+      idx = ST_API_OPENVG;
+      break;
+   case EGL_OPENGL_API:
+      idx = ST_API_OPENGL;
+      break;
+   default:
+      _eglLog(_EGL_WARNING, "unknown client API 0x%04x", ctx->ClientAPI);
+      break;
+   }
+
+   stapi = (idx >= 0) ? gdrv->stapis[idx] : NULL;
+   return stapi;
+}
+
+static _EGLContext *
+egl_g3d_create_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
+                       _EGLContext *share, const EGLint *attribs)
+{
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   struct egl_g3d_context *gshare = egl_g3d_context(share);
+   struct egl_g3d_config *gconf = egl_g3d_config(conf);
+   struct egl_g3d_context *gctx;
+
+   gctx = CALLOC_STRUCT(egl_g3d_context);
+   if (!gctx) {
+      _eglError(EGL_BAD_ALLOC, "eglCreateContext");
+      return NULL;
+   }
+
+   if (!_eglInitContext(&gctx->base, dpy, conf, attribs)) {
+      free(gctx);
+      return NULL;
+   }
+
+   gctx->stapi = egl_g3d_choose_st(drv, &gctx->base);
+   if (!gctx->stapi) {
+      free(gctx);
+      return NULL;
+   }
+
+   gctx->stctxi = gctx->stapi->create_context(gctx->stapi, gdpy->smapi,
+         &gconf->stvis, (gshare) ? gshare->stctxi : NULL);
+   if (!gctx->stctxi) {
+      free(gctx);
+      return NULL;
+   }
+
+   gctx->stctxi->st_manager_private = (void *) &gctx->base;
+
+   return &gctx->base;
+}
+
+/**
+ * Destroy a context.
+ */
+static void
+destroy_context(_EGLDisplay *dpy, _EGLContext *ctx)
+{
+   struct egl_g3d_context *gctx = egl_g3d_context(ctx);
+
+   /* FIXME a context might live longer than its display */
+   if (!dpy->Initialized)
+      _eglLog(_EGL_FATAL, "destroy a context with an unitialized display");
+
+   gctx->stctxi->destroy(gctx->stctxi);
+
+   free(gctx);
+}
+
+static EGLBoolean
+egl_g3d_destroy_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
+{
+   if (!_eglIsContextBound(ctx))
+      destroy_context(dpy, ctx);
+   return EGL_TRUE;
+}
+
+struct egl_g3d_create_surface_arg {
+   EGLint type;
+   union {
+      EGLNativeWindowType win;
+      EGLNativePixmapType pix;
+   } u;
+};
+
+static _EGLSurface *
+egl_g3d_create_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
+                       struct egl_g3d_create_surface_arg *arg,
+                       const EGLint *attribs)
+{
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   struct egl_g3d_config *gconf = egl_g3d_config(conf);
+   struct egl_g3d_surface *gsurf;
+   struct native_surface *nsurf;
+   const char *err;
+
+   switch (arg->type) {
+   case EGL_WINDOW_BIT:
+      err = "eglCreateWindowSurface";
+      break;
+   case EGL_PIXMAP_BIT:
+      err = "eglCreatePixmapSurface";
+      break;
+#ifdef EGL_MESA_screen_surface
+   case EGL_SCREEN_BIT_MESA:
+      err = "eglCreateScreenSurface";
+      break;
+#endif
+   default:
+      err = "eglCreateUnknownSurface";
+      break;
+   }
+
+   gsurf = CALLOC_STRUCT(egl_g3d_surface);
+   if (!gsurf) {
+      _eglError(EGL_BAD_ALLOC, err);
+      return NULL;
+   }
+
+   if (!_eglInitSurface(&gsurf->base, dpy, arg->type, conf, attribs)) {
+      free(gsurf);
+      return NULL;
+   }
+
+   /* create the native surface */
+   switch (arg->type) {
+   case EGL_WINDOW_BIT:
+      nsurf = gdpy->native->create_window_surface(gdpy->native,
+            arg->u.win, gconf->native);
+      break;
+   case EGL_PIXMAP_BIT:
+      nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
+            arg->u.pix, gconf->native);
+      break;
+#ifdef EGL_MESA_screen_surface
+   case EGL_SCREEN_BIT_MESA:
+      /* prefer back buffer (move to _eglInitSurface?) */
+      gsurf->base.RenderBuffer = EGL_BACK_BUFFER;
+      nsurf = gdpy->native->modeset->create_scanout_surface(gdpy->native,
+            gconf->native, gsurf->base.Width, gsurf->base.Height);
+      break;
+#endif
+   default:
+      nsurf = NULL;
+      break;
+   }
+
+   if (!nsurf) {
+      free(gsurf);
+      return NULL;
+   }
+   /* initialize the geometry */
+   if (!nsurf->validate(nsurf, 0x0, &gsurf->sequence_number, NULL,
+            &gsurf->base.Width, &gsurf->base.Height)) {
+      nsurf->destroy(nsurf);
+      free(gsurf);
+      return NULL;
+   }
+
+   gsurf->stvis = gconf->stvis;
+   if (gsurf->base.RenderBuffer == EGL_SINGLE_BUFFER)
+      gsurf->stvis.render_buffer = ST_ATTACHMENT_FRONT_LEFT;
+
+   gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
+   if (!gsurf->stfbi) {
+      nsurf->destroy(nsurf);
+      free(gsurf);
+      return NULL;
+   }
+
+   nsurf->user_data = &gsurf->base;
+   gsurf->native = nsurf;
+
+   return &gsurf->base;
+}
+
+static _EGLSurface *
+egl_g3d_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy,
+                              _EGLConfig *conf, EGLNativeWindowType win,
+                              const EGLint *attribs)
+{
+   struct egl_g3d_create_surface_arg arg;
+
+   memset(&arg, 0, sizeof(arg));
+   arg.type = EGL_WINDOW_BIT;
+   arg.u.win = win;
+
+   return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
+}
+
+static _EGLSurface *
+egl_g3d_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy,
+                              _EGLConfig *conf, EGLNativePixmapType pix,
+                              const EGLint *attribs)
+{
+   struct egl_g3d_create_surface_arg arg;
+
+   memset(&arg, 0, sizeof(arg));
+   arg.type = EGL_PIXMAP_BIT;
+   arg.u.pix = pix;
+
+   return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
+}
+
+static _EGLSurface *
+egl_g3d_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy,
+                               _EGLConfig *conf, const EGLint *attribs)
+{
+   struct egl_g3d_config *gconf = egl_g3d_config(conf);
+   struct egl_g3d_surface *gsurf;
+
+   gsurf = CALLOC_STRUCT(egl_g3d_surface);
+   if (!gsurf) {
+      _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface");
+      return NULL;
+   }
+
+   if (!_eglInitSurface(&gsurf->base, dpy, EGL_PBUFFER_BIT, conf, attribs)) {
+      free(gsurf);
+      return NULL;
+   }
+
+   gsurf->stvis = gconf->stvis;
+
+   gsurf->stfbi = egl_g3d_create_st_framebuffer(&gsurf->base);
+   if (!gsurf->stfbi) {
+      free(gsurf);
+      return NULL;
+   }
+
+   return &gsurf->base;
+}
+
+/**
+ * Destroy a surface.
+ */
+static void
+destroy_surface(_EGLDisplay *dpy, _EGLSurface *surf)
+{
+   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
+
+   /* FIXME a surface might live longer than its display */
+   if (!dpy->Initialized)
+      _eglLog(_EGL_FATAL, "destroy a surface with an unitialized display");
+
+   pipe_resource_reference(&gsurf->render_texture, NULL);
+   egl_g3d_destroy_st_framebuffer(gsurf->stfbi);
+   if (gsurf->native)
+      gsurf->native->destroy(gsurf->native);
+   free(gsurf);
+}
+
+static EGLBoolean
+egl_g3d_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
+{
+   if (!_eglIsSurfaceBound(surf))
+      destroy_surface(dpy, surf);
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy,
+                     _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx)
+{
+   struct egl_g3d_context *gctx = egl_g3d_context(ctx);
+   struct egl_g3d_surface *gdraw = egl_g3d_surface(draw);
+   struct egl_g3d_surface *gread = egl_g3d_surface(read);
+   struct egl_g3d_context *old_gctx;
+   EGLBoolean ok = EGL_TRUE;
+
+   /* bind the new context and return the "orphaned" one */
+   if (!_eglBindContext(&ctx, &draw, &read))
+      return EGL_FALSE;
+   old_gctx = egl_g3d_context(ctx);
+
+   if (old_gctx) {
+      /* flush old context */
+      old_gctx->stctxi->flush(old_gctx->stctxi,
+            PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
+   }
+
+   if (gctx) {
+      ok = gctx->stapi->make_current(gctx->stapi, gctx->stctxi,
+            (gdraw) ? gdraw->stfbi : NULL, (gread) ? gread->stfbi : NULL);
+      if (ok) {
+         gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi, gdraw->stfbi);
+         if (gread != gdraw) {
+            gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi,
+                  gread->stfbi);
+         }
+
+         if (gdraw->base.Type == EGL_WINDOW_BIT) {
+            gctx->base.WindowRenderBuffer =
+               (gdraw->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT) ?
+               EGL_SINGLE_BUFFER : EGL_BACK_BUFFER;
+         }
+      }
+   }
+   else if (old_gctx) {
+      ok = old_gctx->stapi->make_current(old_gctx->stapi, NULL, NULL, NULL);
+      old_gctx->base.WindowRenderBuffer = EGL_NONE;
+   }
+
+   if (ctx && !_eglIsContextLinked(ctx))
+      destroy_context(dpy, ctx);
+   if (draw && !_eglIsSurfaceLinked(draw))
+      destroy_surface(dpy, draw);
+   if (read && read != draw && !_eglIsSurfaceLinked(read))
+      destroy_surface(dpy, read);
+
+   return ok;
+}
+
+static EGLBoolean
+egl_g3d_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf)
+{
+   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
+   _EGLContext *ctx = _eglGetCurrentContext();
+   struct egl_g3d_context *gctx = NULL;
+
+   /* no-op for pixmap or pbuffer surface */
+   if (gsurf->base.Type == EGL_PIXMAP_BIT ||
+       gsurf->base.Type == EGL_PBUFFER_BIT)
+      return EGL_TRUE;
+
+   /* or when the surface is single-buffered */
+   if (gsurf->stvis.render_buffer == ST_ATTACHMENT_FRONT_LEFT)
+      return EGL_TRUE;
+
+   if (ctx && ctx->DrawSurface == surf)
+      gctx = egl_g3d_context(ctx);
+
+   /* flush if the surface is current */
+   if (gctx) {
+      gctx->stctxi->flush(gctx->stctxi,
+            PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
+   }
+
+   return gsurf->native->swap_buffers(gsurf->native);
+}
+
+/**
+ * Get the pipe surface of the given attachment of the native surface.
+ */
+static struct pipe_surface *
+get_pipe_surface(struct native_display *ndpy, struct native_surface *nsurf,
+                 enum native_attachment natt,
+		 unsigned bind)
+{
+   struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
+   struct pipe_surface *psurf;
+
+   textures[natt] = NULL;
+   nsurf->validate(nsurf, 1 << natt, NULL, textures, NULL, NULL);
+   if (!textures[natt])
+      return NULL;
+
+   psurf = ndpy->screen->get_tex_surface(ndpy->screen, textures[natt],
+         0, 0, 0, bind);
+   pipe_resource_reference(&textures[natt], NULL);
+
+   return psurf;
+}
+
+static EGLBoolean
+egl_g3d_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
+                     EGLNativePixmapType target)
+{
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
+   _EGLContext *ctx = _eglGetCurrentContext();
+   struct egl_g3d_config *gconf;
+   struct native_surface *nsurf;
+   struct pipe_screen *screen = gdpy->native->screen;
+   struct pipe_surface *psurf;
+
+   if (!gsurf->render_texture)
+      return EGL_TRUE;
+
+   gconf = egl_g3d_config(egl_g3d_find_pixmap_config(dpy, target));
+   if (!gconf)
+      return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCopyBuffers");
+
+   nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
+         target, gconf->native);
+   if (!nsurf)
+      return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCopyBuffers");
+
+   /* flush if the surface is current */
+   if (ctx && ctx->DrawSurface == &gsurf->base) {
+      struct egl_g3d_context *gctx = egl_g3d_context(ctx);
+      gctx->stctxi->flush(gctx->stctxi,
+            PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
+   }
+
+   /* create a pipe context to copy surfaces */
+   if (!gdpy->pipe) {
+      gdpy->pipe =
+         gdpy->native->screen->context_create(gdpy->native->screen, NULL);
+      if (!gdpy->pipe)
+         return EGL_FALSE;
+   }
+
+   psurf = get_pipe_surface(gdpy->native, nsurf, NATIVE_ATTACHMENT_FRONT_LEFT,
+			    PIPE_BIND_BLIT_DESTINATION);
+   if (psurf) {
+      struct pipe_surface *psrc;
+
+      psrc = screen->get_tex_surface(screen, gsurf->render_texture,
+            0, 0, 0, PIPE_BIND_BLIT_SOURCE);
+      if (psrc) {
+         gdpy->pipe->surface_copy(gdpy->pipe, psurf, 0, 0,
+               psrc, 0, 0, psurf->width, psurf->height);
+         pipe_surface_reference(&psrc, NULL);
+
+         nsurf->flush_frontbuffer(nsurf);
+      }
+
+      pipe_surface_reference(&psurf, NULL);
+   }
+
+   nsurf->destroy(nsurf);
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+egl_g3d_wait_client(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
+{
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   struct egl_g3d_context *gctx = egl_g3d_context(ctx);
+   struct pipe_screen *screen = gdpy->native->screen;
+   struct pipe_fence_handle *fence = NULL;
+
+   gctx->stctxi->flush(gctx->stctxi,
+         PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, &fence);
+   screen->fence_finish(screen, fence, 0);
+   screen->fence_reference(screen, &fence, NULL);
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+egl_g3d_wait_native(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine)
+{
+   _EGLContext *ctx = _eglGetCurrentContext();
+
+   if (engine != EGL_CORE_NATIVE_ENGINE)
+      return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
+
+   if (ctx && ctx->DrawSurface) {
+      struct egl_g3d_surface *gsurf = egl_g3d_surface(ctx->DrawSurface);
+
+      if (gsurf->native)
+         gsurf->native->wait(gsurf->native);
+   }
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+egl_g3d_bind_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
+                       _EGLSurface *surf, EGLint buffer)
+{
+   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
+   _EGLContext *es1 = _eglGetAPIContext(EGL_OPENGL_ES_API);
+   struct egl_g3d_context *gctx;
+   enum pipe_format internal_format;
+   enum st_texture_type target;
+
+   if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT)
+      return _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
+   if (buffer != EGL_BACK_BUFFER)
+      return _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
+   if (gsurf->base.BoundToTexture)
+      return _eglError(EGL_BAD_ACCESS, "eglBindTexImage");
+
+   switch (gsurf->base.TextureFormat) {
+   case EGL_TEXTURE_RGB:
+      internal_format = PIPE_FORMAT_R8G8B8_UNORM;
+      break;
+   case EGL_TEXTURE_RGBA:
+      internal_format = PIPE_FORMAT_B8G8R8A8_UNORM;
+      break;
+   default:
+      return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
+   }
+
+   switch (gsurf->base.TextureTarget) {
+   case EGL_TEXTURE_2D:
+      target = ST_TEXTURE_2D;
+      break;
+   default:
+      return _eglError(EGL_BAD_MATCH, "eglBindTexImage");
+   }
+
+   if (!es1)
+      return EGL_TRUE;
+   if (!gsurf->render_texture)
+      return EGL_FALSE;
+
+   /* flush properly if the surface is bound */
+   if (gsurf->base.CurrentContext) {
+      gctx = egl_g3d_context(gsurf->base.CurrentContext);
+      gctx->stctxi->flush(gctx->stctxi,
+            PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
+   }
+
+   gctx = egl_g3d_context(es1);
+   if (gctx->stctxi->teximage) {
+      if (!gctx->stctxi->teximage(gctx->stctxi, target,
+               gsurf->base.MipmapLevel, internal_format,
+               gsurf->render_texture, gsurf->base.MipmapTexture))
+         return EGL_FALSE;
+      gsurf->base.BoundToTexture = EGL_TRUE;
+   }
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
+egl_g3d_release_tex_image(_EGLDriver *drv, _EGLDisplay *dpy,
+                          _EGLSurface *surf, EGLint buffer)
+{
+   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
+
+   if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT ||
+       !gsurf->base.BoundToTexture)
+      return _eglError(EGL_BAD_SURFACE, "eglReleaseTexImage");
+   if (buffer != EGL_BACK_BUFFER)
+      return _eglError(EGL_BAD_PARAMETER, "eglReleaseTexImage");
+
+   if (gsurf->render_texture) {
+      _EGLContext *ctx = _eglGetAPIContext(EGL_OPENGL_ES_API);
+      struct egl_g3d_context *gctx = egl_g3d_context(ctx);
+
+      /* what if the context the surface binds to is no longer current? */
+      if (gctx) {
+         gctx->stctxi->teximage(gctx->stctxi, ST_TEXTURE_2D,
+               gsurf->base.MipmapLevel, PIPE_FORMAT_NONE, NULL, FALSE);
+      }
+   }
+
+   gsurf->base.BoundToTexture = EGL_FALSE;
+
+   return EGL_TRUE;
+}
+
+#ifdef EGL_MESA_screen_surface
+
+static _EGLSurface *
+egl_g3d_create_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
+                              _EGLConfig *conf, const EGLint *attribs)
+{
+   struct egl_g3d_create_surface_arg arg;
+
+   memset(&arg, 0, sizeof(arg));
+   arg.type = EGL_SCREEN_BIT_MESA;
+
+   return egl_g3d_create_surface(drv, dpy, conf, &arg, attribs);
+}
+
+static EGLBoolean
+egl_g3d_show_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy,
+                            _EGLScreen *scr, _EGLSurface *surf,
+                            _EGLMode *mode)
+{
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   struct egl_g3d_screen *gscr = egl_g3d_screen(scr);
+   struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
+   struct native_surface *nsurf;
+   const struct native_mode *nmode;
+   EGLBoolean changed;
+
+   if (gsurf) {
+      EGLint idx;
+
+      if (!mode)
+         return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
+      if (gsurf->base.Type != EGL_SCREEN_BIT_MESA)
+         return _eglError(EGL_BAD_SURFACE, "eglShowScreenSurfaceMESA");
+      if (gsurf->base.Width < mode->Width || gsurf->base.Height < mode->Height)
+         return _eglError(EGL_BAD_MATCH,
+               "eglShowSurfaceMESA(surface smaller than mode size)");
+
+      /* find the index of the mode */
+      for (idx = 0; idx < gscr->base.NumModes; idx++)
+         if (mode == &gscr->base.Modes[idx])
+            break;
+      if (idx >= gscr->base.NumModes) {
+         return _eglError(EGL_BAD_MODE_MESA,
+               "eglShowSurfaceMESA(unknown mode)");
+      }
+
+      nsurf = gsurf->native;
+      nmode = gscr->native_modes[idx];
+   }
+   else {
+      if (mode)
+         return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA");
+
+      /* disable the screen */
+      nsurf = NULL;
+      nmode = NULL;
+   }
+
+   /* TODO surface panning by CRTC choosing */
+   changed = gdpy->native->modeset->program(gdpy->native, 0, nsurf,
+         gscr->base.OriginX, gscr->base.OriginY, &gscr->native, 1, nmode);
+   if (changed) {
+      gscr->base.CurrentSurface = &gsurf->base;
+      gscr->base.CurrentMode = mode;
+   }
+
+   return changed;
+}
+
+#endif /* EGL_MESA_screen_surface */
+
+/**
+ * Find a config that supports the pixmap.
+ */
+_EGLConfig *
+egl_g3d_find_pixmap_config(_EGLDisplay *dpy, EGLNativePixmapType pix)
+{
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   struct egl_g3d_config *gconf;
+   EGLint i;
+
+   for (i = 0; i < dpy->NumConfigs; i++) {
+      gconf = egl_g3d_config(dpy->Configs[i]);
+      if (gdpy->native->is_pixmap_supported(gdpy->native, pix, gconf->native))
+         break;
+   }
+
+   return (i < dpy->NumConfigs) ? &gconf->base : NULL;
+}
+
+void
+egl_g3d_init_driver_api(_EGLDriver *drv)
+{
+   _eglInitDriverFallbacks(drv);
+
+   drv->API.CreateContext = egl_g3d_create_context;
+   drv->API.DestroyContext = egl_g3d_destroy_context;
+   drv->API.CreateWindowSurface = egl_g3d_create_window_surface;
+   drv->API.CreatePixmapSurface = egl_g3d_create_pixmap_surface;
+   drv->API.CreatePbufferSurface = egl_g3d_create_pbuffer_surface;
+   drv->API.DestroySurface = egl_g3d_destroy_surface;
+   drv->API.MakeCurrent = egl_g3d_make_current;
+   drv->API.SwapBuffers = egl_g3d_swap_buffers;
+   drv->API.CopyBuffers = egl_g3d_copy_buffers;
+   drv->API.WaitClient = egl_g3d_wait_client;
+   drv->API.WaitNative = egl_g3d_wait_native;
+
+   drv->API.BindTexImage = egl_g3d_bind_tex_image;
+   drv->API.ReleaseTexImage = egl_g3d_release_tex_image;
+
+   drv->API.CreateImageKHR = egl_g3d_create_image;
+   drv->API.DestroyImageKHR = egl_g3d_destroy_image;
+
+#ifdef EGL_MESA_screen_surface
+   drv->API.CreateScreenSurfaceMESA = egl_g3d_create_screen_surface;
+   drv->API.ShowScreenSurfaceMESA = egl_g3d_show_screen_surface;
+#endif
+}