You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
2.7 KiB
104 lines
2.7 KiB
//
|
|
// 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 <algorithm>
|
|
|
|
#include "util/gles_loader_autogen.h"
|
|
|
|
class FlatShadingSample : public SampleApplication
|
|
{
|
|
public:
|
|
FlatShadingSample(int argc, char **argv)
|
|
: SampleApplication("FlatShadingSample", argc, argv, 1, 0)
|
|
{}
|
|
|
|
bool initialize() override
|
|
{
|
|
glClearColor(0.1f, 0.1f, 0.2f, 1.0f);
|
|
mRotDeg = 0.0f;
|
|
|
|
return true;
|
|
}
|
|
|
|
void draw() override
|
|
{
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
GLfloat vertices[] = {
|
|
-0.5f, 0.5f, 0.0f, -0.5f, -0.5f, 0.0f, 0.5f, -0.5f,
|
|
0.0f, 0.5f, 0.5f, 0.0f, 0.0f, 0.0f, -1.0f,
|
|
};
|
|
|
|
GLfloat colors[] = {
|
|
1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
|
|
1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f,
|
|
};
|
|
|
|
GLuint indices[] = {
|
|
0, 1, 2, 2, 3, 0,
|
|
|
|
4, 1, 0, 4, 2, 1, 4, 3, 2, 4, 0, 3,
|
|
};
|
|
|
|
glEnable(GL_DEPTH_TEST);
|
|
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
|
glEnableClientState(GL_COLOR_ARRAY);
|
|
glVertexPointer(3, GL_FLOAT, 0, vertices);
|
|
glColorPointer(4, GL_FLOAT, 0, colors);
|
|
|
|
for (int i = 0; i < 6; i++)
|
|
{
|
|
for (int j = 0; j < 6; j++)
|
|
{
|
|
if ((i + j * 6) % 2 == 0)
|
|
{
|
|
glShadeModel(GL_FLAT);
|
|
}
|
|
else
|
|
{
|
|
glShadeModel(GL_SMOOTH);
|
|
}
|
|
|
|
glPushMatrix();
|
|
|
|
glTranslatef(-0.7f + i * 0.3f, -0.7f + j * 0.3f, 0.0f);
|
|
|
|
glRotatef(mRotDeg + (5.0f * (6.0f * i + j)), 0.0f, 1.0f, 0.0f);
|
|
glRotatef(20.0f + (10.0f * (6.0f * i + j)), 1.0f, 0.0f, 0.0f);
|
|
GLfloat scale = 0.2f;
|
|
glScalef(scale, scale, scale);
|
|
glDrawElements(GL_TRIANGLES, sizeof(indices) / sizeof(GLuint), GL_UNSIGNED_INT,
|
|
indices);
|
|
|
|
glPopMatrix();
|
|
}
|
|
}
|
|
|
|
mRotDeg += 0.1f;
|
|
}
|
|
|
|
private:
|
|
float mRotDeg = 0.0f;
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
FlatShadingSample app(argc, argv);
|
|
return app.run();
|
|
}
|