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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This is a simple example that draws a single triangle with | 5 // This is a simple example that draws a single triangle with |
6 // a minimal vertex/fragment shader. The purpose of this | 6 // a minimal vertex/fragment shader. The purpose of this |
7 // example is to demonstrate the basic concepts of | 7 // example is to demonstrate the basic concepts of |
8 // OpenGL ES 2.0 rendering. | 8 // OpenGL ES 2.0 rendering. |
9 | 9 |
10 #include "gpu/demos/app_framework/application.h" | 10 #include "gpu/demos/gles2_book/example.h" |
11 #include "third_party/gles2_book/Chapter_8/Simple_VertexShader/Simple_VertexShad
er.h" | 11 #include "third_party/gles2_book/Chapter_8/Simple_VertexShader/Simple_VertexShad
er.h" |
12 | 12 |
13 namespace gpu_demos { | 13 namespace gpu { |
14 class SimpleVertexShader : public Application { | 14 namespace demos { |
15 public: | 15 namespace gles2_book { |
16 SimpleVertexShader(); | 16 typedef Example<SVSUserData, |
17 ~SimpleVertexShader(); | 17 svsInit, |
18 | 18 svsUpdate, |
19 bool Init(); | 19 svsDraw, |
20 | 20 svsShutDown> SimpleVertexShader; |
21 protected: | 21 } // namespace gles2_book |
22 virtual void Draw(float elapsed_sec); | 22 } // namespace demos |
23 | 23 } // namespace gpu |
24 private: | |
25 ESContext context_; | |
26 SVSUserData user_data_; | |
27 | |
28 DISALLOW_COPY_AND_ASSIGN(SimpleVertexShader); | |
29 }; | |
30 | |
31 SimpleVertexShader::SimpleVertexShader() { | |
32 esInitContext(&context_); | |
33 | |
34 memset(&user_data_, 0, sizeof(SVSUserData)); | |
35 context_.userData = &user_data_; | |
36 } | |
37 | |
38 SimpleVertexShader::~SimpleVertexShader() { | |
39 svsShutDown(&context_); | |
40 } | |
41 | |
42 bool SimpleVertexShader::Init() { | |
43 if (!Application::InitRenderContext()) return false; | |
44 | |
45 context_.width = width(); | |
46 context_.height = height(); | |
47 if (!svsInit(&context_)) return false; | |
48 | |
49 return true; | |
50 } | |
51 | |
52 void SimpleVertexShader::Draw(float elapsed_sec) { | |
53 svsUpdate(&context_, elapsed_sec); | |
54 | |
55 svsDraw(&context_); | |
56 } | |
57 } // namespace gpu_demos | |
58 | 24 |
59 int main(int argc, char *argv[]) { | 25 int main(int argc, char *argv[]) { |
60 gpu_demos::SimpleVertexShader app; | 26 gpu::demos::gles2_book::SimpleVertexShader demo; |
61 if (!app.Init()) { | 27 CHECK(demo.Init()); |
62 printf("Could not init.\n"); | |
63 return EXIT_FAILURE; | |
64 } | |
65 | 28 |
66 app.MainLoop(); | 29 demo.MainLoop(); |
67 return EXIT_SUCCESS; | 30 return EXIT_SUCCESS; |
68 } | 31 } |
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