kc3-lang/angle/samples/gles1/HelloTriangle.cpp

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• Author : Lingfeng Yang
  Date : 2018-04-23 09:02:09
  Hash : 461b09a8
  Message : GLES1: Renderer (minimal) This is the renderer code for GLES1 that delivers basic vertex attributes, matrices, and allows texturing for unit 0 only (more units mean implementing the multitexturing pipeline). + Sample + Update test expectations for GLES1 conformance tests BUG=angleproject:2554 BUG=angleproject:2306 Change-Id: I398edc764f982fbfc4c5e0f9d6bfef1e91aec47c Reviewed-on: https://chromium-review.googlesource.com/1057356 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Lingfeng Yang <lfy@google.com>

• samples/gles1/HelloTriangle.cpp

• //
  // Copyright 2018 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  //            Based on Hello_Triangle.c from
  // Book:      OpenGL(R) ES 2.0 Programming Guide
  // Authors:   Aaftab Munshi, Dan Ginsburg, Dave Shreiner
  // ISBN-10:   0321502795
  // ISBN-13:   9780321502797
  // Publisher: Addison-Wesley Professional
  // URLs:      http://safari.informit.com/9780321563835
  //            http://www.opengles-book.com
  
  #include "SampleApplication.h"
  #include "shader_utils.h"
  
  #include <GLES/gl.h>
  
  class GLES1HelloTriangleSample : public SampleApplication
  {
    public:
      GLES1HelloTriangleSample(EGLint displayType)
          : SampleApplication("GLES1HelloTriangle", 1280, 720, 1, 0, displayType)
      {
      }
  
      bool initialize() override
      {
          glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
  
          return true;
      }
  
      void destroy() override {}
  
      void draw() override
      {
          GLfloat vertices[] = {
              0.0f, 0.5f, 0.0f, -0.5f, -0.5f, 0.0f, 0.5f, -0.5f, 0.0f,
          };
  
          glViewport(0, 0, getWindow()->getWidth(), getWindow()->getHeight());
          glClear(GL_COLOR_BUFFER_BIT);
  
          glEnableClientState(GL_VERTEX_ARRAY);
          glVertexPointer(3, GL_FLOAT, 0, vertices);
  
          glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
  
          glDrawArrays(GL_TRIANGLES, 0, 3);
      }
  };
  
  int main(int argc, char **argv)
  {
      EGLint displayType = EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE;
  
      if (argc > 1)
      {
          displayType = GetDisplayTypeFromArg(argv[1]);
      }
  
      GLES1HelloTriangleSample app(displayType);
      return app.run();
  }