Stubbed in new test: graphics_WindowManagerGraphicsCapture

client/deps/glbench/src/windowmanagertest.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.
+
+// Application that displays graphics using OpenGL [ES] with the intent
+// of being used in functional tests.
+
+#include <gflags/gflags.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <cmath>
+
+#include "main.h"
+#include "utils.h"
+
+
+GLuint GenerateAndBindTexture() {
+  GLuint name = ~0;
+  glGenTextures(1, &name);
+  glBindTexture(GL_TEXTURE_2D, name);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+  return name;
+}
+
+
+unsigned char* CreateBitmap(int w, int h) {
+  unsigned char* bitmap = new unsigned char[w * h];
+  unsigned char* pixel = bitmap;
+  float w2 = w/2.0f;
+  float h2 = h/2.0f;
+  for (int y = 0; y < h; y++) {
+    for (int x = 0; x < w; x++) {
+      // Fill with soft ellipse
+      float dx = fabs((x - w2) / w2);
+      float dy = fabs((y - h2) / h2);
+      float dist2 = dx*dx + dy*dy;
+      if (dist2 > 1.f)
+        dist2 = 1.f;
+      *pixel = (1.f-dist2) * 255.f;
+      pixel++;
+    }
+  }
+  return bitmap;
+}
+
+
+const char kVertexShader[] =
+    "attribute vec4 c;"
+    "void main() {"
+    "    gl_Position = c;"
+    "    gl_TexCoord[0] = vec4(c.y, c.x, 0.0, 0.0);"
+    "}";
+
+const char kFragmentShader[] =
+    "uniform sampler2D tex;"
+    "void main() {"
+    "    gl_FragColor = texture2D(tex, gl_TexCoord[0].xy);"
+    "}";
+
+
+// If refresh is set to zero, we enable vsync.  Otherwise we redraw that many
+// times a second.
+DEFINE_int32(seconds_to_run, 10, "seconds to run application for");
+
+int main(int argc, char* argv[]) {
+  g_width = -1;
+  g_height = -1;
+  google::ParseCommandLineFlags(&argc, &argv, true);
+
+  if (!Init()) {
+    printf("# Failed to initialize.\n");
+    return 1;
+  }
+
+  InitContext();
+  glViewport(-g_width, -g_height, g_width*2, g_height*2);
+
+  unsigned char* bitmap = CreateBitmap(g_height, g_width);
+  GLuint texture = GenerateAndBindTexture();
+  glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, g_height, g_width, 0,
+               GL_LUMINANCE, GL_UNSIGNED_BYTE, bitmap);
+
+  GLfloat vertices[8] = {
+    0.f, 0.f,
+    1.f, 0.f,
+    0.f, 1.f,
+    1.f, 1.f,
+  };
+
+  GLuint program = InitShaderProgram(kVertexShader, kFragmentShader);
+  int attribute_index = glGetAttribLocation(program, "c");
+  glVertexAttribPointer(attribute_index, 2, GL_FLOAT, GL_FALSE, 0, vertices);
+  glEnableVertexAttribArray(attribute_index);
+
+  int texture_sampler = glGetUniformLocation(program, "tex");
+  glUniform1f(texture_sampler, 0);
+
+  uint64_t wait_until_done = GetUTime() + 1000000ULL * FLAGS_seconds_to_run;
+  do {
+    glClear(GL_COLOR_BUFFER_BIT);
+    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+    SwapBuffers();
+  } while (GetUTime() < wait_until_done);
+
+  glDeleteTextures(1, &texture);
+  DestroyContext();
+  return 0;
+}