public VladimirView(Context context) : base(context)
{
// modelObject2D = new float[modelObject.Length/3*2];
ObjParser model3D = new ObjParser();
List <byte[]> test1 = model3D.ParsedObject(context, "bottle2");
float[] floatArray = new float[test1[0].Length / 4];
System.Buffer.BlockCopy(test1[0], 0, floatArray, 0, (int)test1[0].Length);
modelObject = floatArray;
}
public void OnSurfaceCreated(IGL10 gl, Javax.Microedition.Khronos.Egl.EGLConfig config)
{
const float coord = 1.0f;
ObjParser model3D = new ObjParser();
List <byte[]> test1 = model3D.ParsedObject(context, "buggy");
float[] vertexArray = new float[test1[0].Length / 4];
System.Buffer.BlockCopy(test1[0], 0, vertexArray, 0, (int)test1[0].Length);
modelVerticesData = vertexArray;
FloatBuffer mTriangleVertices = ByteBuffer.AllocateDirect(modelVerticesData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleVertices.Put(modelVerticesData).Flip();
// Cube colors
// R, G, B, A
float[] modelColorsData =
{
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f
};
FloatBuffer mTriangleColors = ByteBuffer.AllocateDirect(modelColorsData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleColors.Put(modelColorsData).Flip();
float[] textureUVMapArray = new float[test1[1].Length / 4];
System.Buffer.BlockCopy(test1[1], 0, textureUVMapArray, 0, (int)test1[1].Length);
modelTextureUVMapData = textureUVMapArray;
FloatBuffer mTriangleTextureUVMap = ByteBuffer.AllocateDirect(modelTextureUVMapData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleTextureUVMap.Put(modelTextureUVMapData).Flip();
//Data buffers to VBO
GLES20.GlGenBuffers(3, VBOBuffers, 0); //2 buffers for vertices, texture and colors
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[0]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleVertices.Capacity() * mBytesPerFloat, mTriangleVertices, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[1]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleColors.Capacity() * mBytesPerFloat, mTriangleColors, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[2]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleTextureUVMap.Capacity() * mBytesPerFloat, mTriangleTextureUVMap, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
//Load and setup texture
GLES20.GlGenTextures(1, textureHandle, 0); //init 1 texture storage handle
if (textureHandle[0] != 0)
{
//Android.Graphics cose class Matrix exists at both Android.Graphics and Android.OpenGL and this is only sample of using
Android.Graphics.BitmapFactory.Options options = new Android.Graphics.BitmapFactory.Options();
options.InScaled = false; // No pre-scaling
Android.Graphics.Bitmap bitmap = Android.Graphics.BitmapFactory.DecodeResource(context.Resources, Resource.Drawable.iam, options);
GLES20.GlBindTexture(GLES20.GlTexture2d, textureHandle[0]);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlNearest);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlNearest);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, bitmap, 0);
bitmap.Recycle();
}
//Ask android to run RAM garbage cleaner
System.GC.Collect();
//Setup OpenGL ES
GLES20.GlClearColor(coord, coord, coord, coord);
// GLES20.GlEnable(GLES20.GlDepthTest); //uncoment if needs enabled dpeth test
GLES20.GlEnable(2884); // GlCullFace == 2884 see OpenGL documentation to this constant value
GLES20.GlCullFace(GLES20.GlBack);
// Position the eye behind the origin.
float eyeX = 0.0f;
float eyeY = 0.0f;
float eyeZ = 4.5f;
// We are looking toward the distance
float lookX = 0.0f;
float lookY = 0.0f;
float lookZ = -5.0f;
// Set our up vector. This is where our head would be pointing were we holding the camera.
float upX = 0.0f;
float upY = coord;
float upZ = 0.0f;
// Set the view matrix. This matrix can be said to represent the camera position.
// NOTE: In OpenGL 1, a ModelView matrix is used, which is a combination of a model and
// view matrix. In OpenGL 2, we can keep track of these matrices separately if we choose.
Matrix.SetLookAtM(mViewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);
string vertexShader =
"uniform mat4 u_MVPMatrix; \n" // A constant representing the combined model/view/projection matrix.
+ "attribute vec4 a_Position; \n" // Per-vertex position information we will pass in.
+ "attribute vec4 a_Color; \n" // Per-vertex color information we will pass in.
+ "varying vec4 v_Color; \n" // This will be passed into the fragment shader.
+ "attribute vec2 a_TextureCoord; \n"
+ "varying vec2 v_TextureCoord; \n"
+ "void main() \n" // The entry point for our vertex shader.
+ "{ \n"
+ " v_TextureCoord = a_TextureCoord; \n" // Pass the color through to the fragment shader. It will be interpolated across the triangle.
+ " v_Color = a_Color; \n" // Pass the color through to the fragment shader. It will be interpolated across the triangle.
+ " gl_Position = u_MVPMatrix \n" // gl_Position is a special variable used to store the final position.
+ " * a_Position; \n" // Multiply the vertex by the matrix to get the final point in normalized screen coordinates.
+ "} \n";
string fragmentShader =
"precision mediump float; \n" // Set the default precision to medium. We don't need as high of a
// precision in the fragment shader.
+ "varying vec4 v_Color; \n" // This is the color from the vertex shader interpolated across the triangle per fragment.
+ "varying vec2 v_TextureCoord; \n"
+ "uniform sampler2D u_Texture; \n"
+ "void main() \n" // The entry point for our fragment shader.
+ "{ \n"
+ " gl_FragColor = texture2D(u_Texture, v_TextureCoord); \n" // Pass the color directly through the pipeline.
+ "} \n";
vertexShader = string.Empty;
fragmentShader = string.Empty;
int resourceId = context.Resources.GetIdentifier("vertexshadervladimir1", "raw", context.PackageName);
Stream fileStream = context.Resources.OpenRawResource(resourceId);
StreamReader streamReader = new StreamReader(fileStream);
string line = string.Empty;
while ((line = streamReader.ReadLine()) != null)
{
vertexShader += line + "\n";
}
resourceId = context.Resources.GetIdentifier("fragmentshadervladimir1", "raw", context.PackageName);
fileStream = context.Resources.OpenRawResource(resourceId);
streamReader = new StreamReader(fileStream);
while ((line = streamReader.ReadLine()) != null)
{
fragmentShader += line + "\n";
}
int vertexShaderHandle = GLES20.GlCreateShader(GLES20.GlVertexShader);
if (vertexShaderHandle != 0)
{
// Pass in the shader source.
GLES20.GlShaderSource(vertexShaderHandle, vertexShader);
// Compile the shader.
GLES20.GlCompileShader(vertexShaderHandle);
// Get the compilation status.
int[] compileStatus = new int[1];
GLES20.GlGetShaderiv(vertexShaderHandle, GLES20.GlCompileStatus, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0)
{
GLES20.GlDeleteShader(vertexShaderHandle);
vertexShaderHandle = 0;
}
}
if (vertexShaderHandle == 0)
{
throw new Exception("Error creating vertex shader.");
}
// Load in the fragment shader shader.
int fragmentShaderHandle = GLES20.GlCreateShader(GLES20.GlFragmentShader);
if (fragmentShaderHandle != 0)
{
// Pass in the shader source.
GLES20.GlShaderSource(fragmentShaderHandle, fragmentShader);
// Compile the shader.
GLES20.GlCompileShader(fragmentShaderHandle);
// Get the compilation status.
int[] compileStatus = new int[1];
GLES20.GlGetShaderiv(fragmentShaderHandle, GLES20.GlCompileStatus, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0)
{
GLES20.GlDeleteShader(fragmentShaderHandle);
fragmentShaderHandle = 0;
}
}
if (fragmentShaderHandle == 0)
{
throw new Exception("Error creating fragment shader.");
}
// Create a program object and store the handle to it.
int programHandle = GLES20.GlCreateProgram();
if (programHandle != 0)
{
// Bind the vertex shader to the program.
GLES20.GlAttachShader(programHandle, vertexShaderHandle);
// Bind the fragment shader to the program.
GLES20.GlAttachShader(programHandle, fragmentShaderHandle);
// Bind attributes
GLES20.GlBindAttribLocation(programHandle, 0, "a_Position");
GLES20.GlBindAttribLocation(programHandle, 1, "a_Color");
GLES20.GlBindAttribLocation(programHandle, 2, "a_TextureCoord");
// Link the two shaders together into a program.
GLES20.GlLinkProgram(programHandle);
// Get the link status.
int[] linkStatus = new int[1];
GLES20.GlGetProgramiv(programHandle, GLES20.GlLinkStatus, linkStatus, 0);
// If the link failed, delete the program.
if (linkStatus[0] == 0)
{
GLES20.GlDeleteProgram(programHandle);
programHandle = 0;
}
}
if (programHandle == 0)
{
throw new Exception("Error creating program.");
}
// Set program handles. These will later be used to pass in values to the program.
mMVPMatrixHandle = GLES20.GlGetUniformLocation(programHandle, "u_MVPMatrix");
mPositionHandle = GLES20.GlGetAttribLocation(programHandle, "a_Position");
mColorHandle = GLES20.GlGetAttribLocation(programHandle, "a_Color");
mTextureCoordHandle = GLES20.GlGetAttribLocation(programHandle, "a_TextureCoord");
mTextureHandle = GLES20.GlGetUniformLocation(programHandle, "u_Texture");
// Tell OpenGL to use this program when rendering.
GLES20.GlUseProgram(programHandle);
}