Added tearing tests for plain texture updates and bind pixmap to texture.

client/deps/glbench/src/teartest_glx.cc

+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/logging.h"
+
+#include "main.h"
+#include "xlib_window.h"
+#include "glx_stuff.h"
+#include "teartest.h"
+
+
+PFNGLXBINDTEXIMAGEEXTPROC glXBindTexImageEXT = NULL;
+PFNGLXRELEASETEXIMAGEEXTPROC glXReleaseTexImageEXT = NULL;
+
+static GLXPixmap glxpixmap = 0;
+
+
+void InitNative(Pixmap pixmap) {
+  glXBindTexImageEXT = reinterpret_cast<PFNGLXBINDTEXIMAGEEXTPROC>(
+      glXGetProcAddress(
+          reinterpret_cast<const GLubyte *>("glXBindTexImageEXT")));
+  glXReleaseTexImageEXT = reinterpret_cast<PFNGLXRELEASETEXIMAGEEXTPROC>(
+      glXGetProcAddress(
+          reinterpret_cast<const GLubyte *>("glXReleaseTexImageEXT")));
+
+  if (!glXBindTexImageEXT)
+    return;
+
+  int rgba, rgb;
+  glXGetFBConfigAttrib(g_xlib_display, g_glx_fbconfig,
+                       GLX_BIND_TO_TEXTURE_RGBA_EXT, &rgba);
+  glXGetFBConfigAttrib(g_xlib_display, g_glx_fbconfig,
+                       GLX_BIND_TO_TEXTURE_RGB_EXT, &rgb);
+  CHECK(rgba || rgb);
+  const int pixmapAttribs[] = {
+    GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
+    GLX_TEXTURE_FORMAT_EXT,
+        rgba ? GLX_TEXTURE_FORMAT_RGBA_EXT : GLX_TEXTURE_FORMAT_RGB_EXT,
+    None
+  };
+
+  glxpixmap = glXCreatePixmap(g_xlib_display, g_glx_fbconfig,
+                              pixmap, pixmapAttribs);
+}
+
+bool UpdateBindTexImage(TestState state, int shift) {
+  if (!glXBindTexImageEXT) {
+    printf("# Could not load glXBindTexImageEXT\n");
+    return false;
+  }
+
+  switch (state) {
+    case TestStart:
+      printf("# Update pixmap bound to texture.\n");
+      InitializePixmap();
+      CopyPixmapToTexture();
+      glXBindTexImageEXT(g_xlib_display, glxpixmap, GLX_FRONT_LEFT_EXT, NULL);
+      break;
+
+    case TestLoop:
+      glXReleaseTexImageEXT(g_xlib_display, glxpixmap, GLX_FRONT_LEFT_EXT);
+      UpdatePixmap(shift);
+      glXBindTexImageEXT(g_xlib_display, glxpixmap, GLX_FRONT_LEFT_EXT, NULL);
+      break;
+
+    case TestStop:
+      glXReleaseTexImageEXT(g_xlib_display, glxpixmap, GLX_FRONT_LEFT_EXT);
+      break;
+  }
+  return true;
+}