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Diffstat (limited to 'gpu/demos/simple_vertex_shader/main.cc')
-rw-r--r-- | gpu/demos/simple_vertex_shader/main.cc | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/gpu/demos/simple_vertex_shader/main.cc b/gpu/demos/simple_vertex_shader/main.cc new file mode 100644 index 0000000..d042942 --- /dev/null +++ b/gpu/demos/simple_vertex_shader/main.cc @@ -0,0 +1,67 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// This is a simple example that draws a single triangle with +// a minimal vertex/fragment shader. The purpose of this +// example is to demonstrate the basic concepts of +// OpenGL ES 2.0 rendering. + +#include "gpu/demos/app_framework/application.h" +#include "third_party/gles2_book/Chapter_8/Simple_VertexShader/Simple_VertexShader.h" + +namespace gpu_demos { +class SimpleVertexShader : public Application { + public: + SimpleVertexShader(); + ~SimpleVertexShader(); + + bool Init(); + + protected: + virtual void Draw(); + + private: + ESContext context_; + SVSUserData user_data_; + + DISALLOW_COPY_AND_ASSIGN(SimpleVertexShader); +}; + +SimpleVertexShader::SimpleVertexShader() { + esInitContext(&context_); + + memset(&user_data_, 0, sizeof(SVSUserData)); + context_.userData = &user_data_; +} + +SimpleVertexShader::~SimpleVertexShader() { + svsShutDown(&context_); +} + +bool SimpleVertexShader::Init() { + if (!Application::InitRenderContext()) return false; + + context_.width = width(); + context_.height = height(); + if (!svsInit(&context_)) return false; + svsUpdate(&context_, 0.0f); + + return true; +} + +void SimpleVertexShader::Draw() { + svsDraw(&context_); +} +} // namespace gpu_demos + +int main(int argc, char *argv[]) { + gpu_demos::SimpleVertexShader app; + if (!app.Init()) { + printf("Could not init.\n"); + return EXIT_FAILURE; + } + + app.MainLoop(); + return EXIT_SUCCESS; +} |