From 9373447a614e7b401919328b589b5f2607e456fd Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olv@lunarg.com>
Date: Fri, 5 Mar 2010 11:18:16 +0800
Subject: st/egl: Add support for EGL_KHR_image_base and EGL_KHR_image_pixmap.

These extensions are not quite useful until the client APIs gain support
for the respective EGLImage extensions.
---
 .../state_trackers/egl/common/egl_g3d_image.c      | 136 +++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 src/gallium/state_trackers/egl/common/egl_g3d_image.c

(limited to 'src/gallium/state_trackers/egl/common/egl_g3d_image.c')

diff --git a/src/gallium/state_trackers/egl/common/egl_g3d_image.c b/src/gallium/state_trackers/egl/common/egl_g3d_image.c
new file mode 100644
index 0000000000..d701f9c9a8
--- /dev/null
+++ b/src/gallium/state_trackers/egl/common/egl_g3d_image.c
@@ -0,0 +1,136 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * 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
+ * BRIAN PAUL 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.
+ *
+ * Authors:
+ *    Chia-I Wu <olv@lunarg.com>
+ */
+
+#include <assert.h>
+#include "pipe/p_screen.h"
+#include "util/u_memory.h"
+#include "util/u_rect.h"
+#include "util/u_inlines.h"
+#include "eglcurrent.h"
+#include "egllog.h"
+
+#include "native.h"
+#include "egl_g3d.h"
+#include "egl_g3d_image.h"
+
+/**
+ * Reference and return the front left buffer of the native pixmap.
+ */
+static struct pipe_texture *
+egl_g3d_reference_native_pixmap(_EGLDisplay *dpy, EGLNativePixmapType pix)
+{
+   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
+   struct egl_g3d_config *gconf;
+   struct native_surface *nsurf;
+   struct pipe_texture *textures[NUM_NATIVE_ATTACHMENTS];
+   enum native_attachment natt;
+
+   gconf = egl_g3d_config(egl_g3d_find_pixmap_config(dpy, pix));
+   if (!gconf)
+      return NULL;
+
+   nsurf = gdpy->native->create_pixmap_surface(gdpy->native,
+         pix, gconf->native);
+   if (!nsurf)
+      return NULL;
+
+   natt = NATIVE_ATTACHMENT_FRONT_LEFT;
+   if (!nsurf->validate(nsurf, 1 << natt, NULL, textures, NULL, NULL))
+      textures[natt] = NULL;
+
+   nsurf->destroy(nsurf);
+
+   return textures[natt];
+}
+
+_EGLImage *
+egl_g3d_create_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
+                     EGLenum target, EGLClientBuffer buffer,
+                     const EGLint *attribs)
+{
+   struct pipe_texture *ptex;
+   struct egl_g3d_image *gimg;
+   unsigned face = 0, level = 0, zslice = 0;
+
+   gimg = CALLOC_STRUCT(egl_g3d_image);
+   if (!gimg) {
+      _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface");
+      return NULL;
+   }
+
+   if (!_eglInitImage(&gimg->base, dpy, attribs)) {
+      free(gimg);
+      return NULL;
+   }
+
+   switch (target) {
+   case EGL_NATIVE_PIXMAP_KHR:
+      ptex = egl_g3d_reference_native_pixmap(dpy,
+            (EGLNativePixmapType) buffer);
+      break;
+   default:
+      ptex = NULL;
+      break;
+   }
+
+   if (!ptex) {
+      free(gimg);
+      return NULL;
+   }
+
+   if (level > ptex->last_level) {
+      _eglError(EGL_BAD_MATCH, "eglCreateEGLImageKHR");
+      pipe_texture_reference(&gimg->texture, NULL);
+      free(gimg);
+      return NULL;
+   }
+   if (zslice > ptex->depth0) {
+      _eglError(EGL_BAD_PARAMETER, "eglCreateEGLImageKHR");
+      pipe_texture_reference(&gimg->texture, NULL);
+      free(gimg);
+      return NULL;
+   }
+
+   /* transfer the ownership to the image */
+   gimg->texture = ptex;
+   gimg->face = face;
+   gimg->level = level;
+   gimg->zslice = zslice;
+
+   return &gimg->base;
+}
+
+EGLBoolean
+egl_g3d_destroy_image(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *img)
+{
+   struct egl_g3d_image *gimg = egl_g3d_image(img);
+
+   pipe_texture_reference(&gimg->texture, NULL);
+   free(gimg);
+
+   return EGL_TRUE;
+}
-- 
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