1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include <GLES2/gl2.h>
6#include <GLES2/gl2ext.h>
7
8#include "gpu/command_buffer/tests/gl_manager.h"
9#include "gpu/command_buffer/tests/gl_test_utils.h"
10#include "testing/gmock/include/gmock/gmock.h"
11#include "testing/gtest/include/gtest/gtest.h"
12
13namespace gpu {
14
15class OcclusionQueryTest : public testing::Test {
16 protected:
17  virtual void SetUp() {
18    GLManager::Options options;
19    options.size = gfx::Size(512, 512);
20    gl_.Initialize(options);
21  }
22
23  virtual void TearDown() {
24    gl_.Destroy();
25  }
26
27  void DrawRect(float x, float z, float scale, float* color);
28
29  GLManager gl_;
30
31  GLint position_loc_;
32  GLint matrix_loc_;
33  GLint color_loc_;
34};
35
36static void SetMatrix(float x, float z, float scale, float* matrix) {
37  matrix[0] = scale;
38  matrix[1] = 0.0f;
39  matrix[2] = 0.0f;
40  matrix[3] = 0.0f;
41
42  matrix[4] = 0.0f;
43  matrix[5] = scale;
44  matrix[6] = 0.0f;
45  matrix[7] = 0.0f;
46
47  matrix[8] = 0.0f;
48  matrix[9] = 0.0f;
49  matrix[10] = scale;
50  matrix[11] = 0.0f;
51
52  matrix[12] = x;
53  matrix[13] = 0.0f;
54  matrix[14] = z;
55  matrix[15] = 1.0f;
56}
57
58void OcclusionQueryTest::DrawRect(float x, float z, float scale, float* color) {
59  GLfloat matrix[16];
60
61  SetMatrix(x, z, scale, matrix);
62
63  // Set up the model matrix
64  glUniformMatrix4fv(matrix_loc_, 1, GL_FALSE, matrix);
65  glUniform4fv(color_loc_, 1, color);
66
67  glDrawArrays(GL_TRIANGLES, 0, 6);
68}
69
70TEST_F(OcclusionQueryTest, Occlusion) {
71#if defined(OS_MACOSX)
72  EXPECT_TRUE(GLTestHelper::HasExtension("GL_EXT_occlusion_query_boolean"))
73      << "GL_EXT_occlusion_query_boolean is required on OSX";
74#endif
75
76  if (!GLTestHelper::HasExtension("GL_EXT_occlusion_query_boolean")) {
77    return;
78  }
79
80  static const char* v_shader_str =
81      "uniform mat4 worldMatrix;\n"
82      "attribute vec3 g_Position;\n"
83      "void main()\n"
84      "{\n"
85      "   gl_Position = worldMatrix *\n"
86      "                 vec4(g_Position.x, g_Position.y, g_Position.z, 1.0);\n"
87      "}\n";
88  static const char* f_shader_str =
89      "precision mediump float;"
90      "uniform vec4 color;\n"
91      "void main()\n"
92      "{\n"
93      "  gl_FragColor = color;\n"
94      "}\n";
95
96  GLuint program = GLTestHelper::LoadProgram(v_shader_str, f_shader_str);
97
98  position_loc_ = glGetAttribLocation(program, "g_Position");
99  matrix_loc_ = glGetUniformLocation(program, "worldMatrix");
100  color_loc_ = glGetUniformLocation(program, "color");
101
102  GLTestHelper::SetupUnitQuad(position_loc_);
103
104  GLuint query = 0;
105  glGenQueriesEXT(1, &query);
106
107  glEnable(GL_DEPTH_TEST);
108  glClearColor(0.0f, 0.1f, 0.2f, 1.0f);
109
110  // Use the program object
111  glUseProgram(program);
112
113  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
114  static float red[] = { 1.0f, 0.0f, 0.0f, 1.0f };
115  DrawRect(0, 0.0f, 0.50f, red);
116
117  glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
118  static float blue[] = { 0.0f, 0.0f, 1.0f, 1.0f };
119  DrawRect(-0.125f, 0.1f, 0.25f, blue);
120  glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
121
122  glFinish();
123
124  GLuint query_status = 0;
125  GLuint result = 0;
126  glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_AVAILABLE_EXT, &result);
127  EXPECT_TRUE(result);
128  glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT, &query_status);
129  EXPECT_FALSE(query_status);
130
131  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
132  DrawRect(1, 0.0f, 0.50f, red);
133
134  glBeginQueryEXT(GL_ANY_SAMPLES_PASSED_EXT, query);
135  DrawRect(-0.125f, 0.1f, 0.25f, blue);
136  glEndQueryEXT(GL_ANY_SAMPLES_PASSED_EXT);
137
138  glFinish();
139
140  query_status = 0;
141  result = 0;
142  glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_AVAILABLE_EXT, &result);
143  EXPECT_TRUE(result);
144  glGetQueryObjectuivEXT(query, GL_QUERY_RESULT_EXT, &query_status);
145  EXPECT_TRUE(query_status);
146  GLTestHelper::CheckGLError("no errors", __LINE__);
147}
148
149}  // namespace gpu
150
151
152