public virtual void Bitmap(Bitmap bitmap)
{
Bind();
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, bitmap, 0);
Premultiplied = true;
}
/// <summary>
/// 加载位图生成纹理
/// </summary>
/// <param name="gl"></param>
private void loadTexture(IGL10 gl)
{
Bitmap bitmap = null;
try
{
// 加载位图
bitmap = BitmapFactory.DecodeResource(ma.Resources, Resource.Drawable.sand);
int[] textures = new int[1];
// 指定生成N个纹理（第一个参数指定生成一个纹理）
// textures数组将负责存储所有纹理的代号
gl.GlGenTextures(1, textures, 0);
// 获取textures纹理数组中的第一个纹理
texture = textures[0];
// 通知OpenGL将texture纹理绑定到GL10.GL_TEXTURE_2D目标中
gl.GlBindTexture(GL10.GlTexture2d, texture);
// 设置纹理被缩小（距离视点很远时被缩小）时的滤波方式
gl.GlTexParameterf(GL10.GlTexture2d, GL10.GlTextureMinFilter, GL10.GlNearest);
// 设置纹理被放大（距离视点很近时被方法）时的滤波方式
gl.GlTexParameterf(GL10.GlTexture2d, GL10.GlTextureMagFilter, GL10.GlLinear);
// 设置在横向、纵向上都是平铺纹理
gl.GlTexParameterf(GL10.GlTexture2d, GL10.GlTextureWrapS, GL10.GlRepeat);
gl.GlTexParameterf(GL10.GlTexture2d, GL10.GlTextureWrapT, GL10.GlRepeat);
// 加载位图生成纹理
GLUtils.TexImage2D(GL10.GlTexture2d, 0, bitmap, 0);
}
finally
{
// 生成纹理之后，回收位图
if (bitmap != null)
{
bitmap.Recycle();
}
}
}
/// <summary>
/// Create the shader program for label display in the openGL thread.
/// This method will be called when WorldRenderManager's OnSurfaceCreated.
/// </summary>
/// <param name="labelBitmaps">View data indicating the plane type.</param>
public void Init(List <Bitmap> labelBitmaps)
{
ShaderUtil.CheckGlError(TAG, "Init start.");
if (labelBitmaps.Count == 0)
{
Log.Debug(TAG, "No bitmap.");
}
CreateProgram();
int idx = 0;
GLES20.GlGenTextures(textures.Length, textures, 0);
foreach (Bitmap labelBitmap in labelBitmaps)
{
// for semantic label plane
GLES20.GlActiveTexture(GLES20.GlTexture0 + idx);
GLES20.GlBindTexture(GLES20.GlTexture2d, textures[idx]);
GLES20.GlTexParameteri(
GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlLinearMipmapLinear);
GLES20.GlTexParameteri(
GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, labelBitmap, 0);
GLES20.GlGenerateMipmap(GLES20.GlTexture2d);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
idx++;
ShaderUtil.CheckGlError(TAG, "Texture loading");
}
ShaderUtil.CheckGlError(TAG, "Init end.");
}
public void LoadTextures()
{
try
{
// Generate textures
GLES20.GlGenTextures(2, MTextures, 0);
// Load input bitmap
if (MSourceBitmap != null)
{
MImageWidth = MSourceBitmap.Width;
MImageHeight = MSourceBitmap.Height;
MTexRenderer.UpdateTextureSize(MImageWidth, MImageHeight);
// Upload to texture
GLES20.GlBindTexture(GLES20.GlTexture2d, MTextures[0]);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, MSourceBitmap, 0);
// Set texture parameters
GlToolbox.InitTexParams();
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
public static int loadTexture(Context context, int resourceId)
{
if (resourceId == -1)
{
return(resourceId);
}
System.GC.Collect();
int[] textureHandle = new int[1];
GLES20.GlGenTextures(1, textureHandle, 0);
if (textureHandle[0] != 0)
{
BitmapFactory.Options options = new BitmapFactory.Options();
options.InScaled = false; // No pre-scaling
Bitmap bitmap = BitmapFactory.DecodeResource(context.Resources, resourceId, 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();
}
if (textureHandle[0] == 0)
{
throw new RuntimeException("Error loading texture.");
}
return(textureHandle[0]);
}
private static TexInfo CreateTexInfoFromBitmap(Bitmap bitmap)
{
TexInfo ret = null;
if (bitmap != null)
{
ret = new TexInfo();
ret.has_alpha = bitmap.HasAlpha;
ret.needs_alpha_test = false; // ad-hock
GLES20.GlPixelStorei(GLES20.GlUnpackAlignment, 1);
int[] tex = new int[1];
GLES20.GlGenTextures(1, tex, 0);
ret.tex = tex [0];
GLES20.GlBindTexture(GLES20.GlTexture2d, ret.tex);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlLinear);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, bitmap, 0);
bitmap.Recycle();
}
return(ret);
}
public Texture(Context context, string fileName)
{
if (string.IsNullOrEmpty(fileName))
{
return;
}
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
int id = context.Resources.GetIdentifier(fileName, "drawable", context.PackageName);
Android.Graphics.Bitmap bitmap = Android.Graphics.BitmapFactory.DecodeResource(context.Resources, id, 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();
handle = textureHandle[0];
}
}
public override void initShader()
{
base.initShader();
//make texture ----------------------------------------------------
//draw texture
if (LevelCanvas.b != null)
{
LevelCanvas.b.Recycle();
}
int width = steps * textureStep;
int height = steps * textureStep;
Bitmap bitmap = Bitmap.CreateBitmap(width, height, Config.Argb8888);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint();
paint.Color = Android.Graphics.Color.Green;
paint.SetStyle(Paint.Style.Fill);
canvas.DrawPaint(paint);
paint.Color = Android.Graphics.Color.White;
paint.AntiAlias = true;
paint.TextSize = textureStep;
paint.TextAlign = Paint.Align.Center;
for (int i = 0; i < steps; i++)
{
paint.Color = Android.Graphics.Color.Rgb(i * 0xF, i * 0xF, i * 0xF);
canvas.DrawText((steps - i).ToString(), textureStep + textureStep / 2, i * textureStep + textureStep - textureStep / 6, paint);
}
//load texture
int[] textureHandle = new int[1];
GLES20.GlGenTextures(1, textureHandle, 0);
if (textureHandle[0] != 0)
{
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();
LevelCanvas.b = bitmap;
}
textureResID = textureHandle[0];
TextureManager.addTextureHandle(textureResID, textureHandle[0]);
}
private Texture(String filename)
{
#if __ANDROID__
AssetManager assets = GameActivity.Instance.Assets;
Bitmap bitmap = null;
using (Stream stream = assets.Open(filename))
{
bitmap = BitmapFactory.DecodeStream(stream);
Width = bitmap.Width;
Height = bitmap.Height;
}
GL.GenTextures(1, out _GLID);
GL.BindTexture(All.Texture2D, _GLID);
GL.TexParameter(All.Texture2D, All.TextureWrapS, (Int32)All.Repeat);
GL.TexParameter(All.Texture2D, All.TextureWrapT, (Int32)All.Repeat);
GL.TexParameter(All.Texture2D, All.TextureMinFilter, (Int32)All.Linear);
GL.TexParameter(All.Texture2D, All.TextureMagFilter, (Int32)All.Linear);
GLUtils.TexImage2D((Int32)All.Texture2D, 0, bitmap, 0);
GL.GenerateMipmap(All.Texture2D);
GL.BindTexture(All.Texture2D, 0);
bitmap.Recycle();
#elif __IOS__
UIImage image = UIImage.FromFile(filename);
nint cgWidth = image.CGImage.Width;
nint cgHeight = image.CGImage.Height;
Width = (Int32)cgWidth;
Height = (Int32)cgHeight;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
Byte[] data = new Byte[Width * Height * 4];
CGContext context = new CGBitmapContext(data, cgWidth, cgHeight, 8, 4 * Width, colorSpace, CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrderDefault);
colorSpace.Dispose();
context.ClearRect(new CGRect(0, 0, cgWidth, cgHeight));
context.DrawImage(new CGRect(0, 0, cgWidth, cgHeight), image.CGImage);
GL.GenTextures(1, out _GLID);
GL.BindTexture(TextureTarget.Texture2D, _GLID);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (Int32)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (Int32)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (Int32)TextureMinFilter.LinearMipmapLinear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (Int32)TextureMagFilter.Linear);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, Width, Height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, data);
context.Dispose();
GL.GenerateMipmap(TextureTarget.Texture2D);
GL.BindTexture(TextureTarget.Texture2D, 0);
#endif
LoadedTextures.Add(filename, this);
_Filename = filename;
}
/// <summary>
/// Initialize the OpenGL ES rendering related to face geometry,
/// including creating the shader program.
/// This method is called when FaceRenderManager's OnSurfaceCreated method calling.
/// </summary>
/// <param name="context">Context.</param>
public void Init(Context context)
{
ShaderUtil.CheckGlError(TAG, "Init start.");
int[] texNames = new int[1];
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlGenTextures(1, texNames, 0);
mTextureName = texNames[0];
int[] buffers = new int[BUFFER_OBJECT_NUMBER];
GLES20.GlGenBuffers(BUFFER_OBJECT_NUMBER, buffers, 0);
mVerticeId = buffers[0];
mTriangleId = buffers[1];
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, mVerticeId);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mVerticeBufferSize * BYTES_PER_POINT, null, GLES20.GlDynamicDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, mTriangleId);
// Each floating-point number occupies 4 bytes.
GLES20.GlBufferData(GLES20.GlElementArrayBuffer, mTriangleBufferSize * 4, null,
GLES20.GlDynamicDraw);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, 0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextureName);
CreateProgram();
//Add texture to facegeometry.
Bitmap textureBitmap = null;
AssetManager assets = context.Assets;
try
{
Stream sr = assets.Open("face_geometry.png");
textureBitmap = BitmapFactory.DecodeStream(sr);
}
catch (Exception e)
{
Log.Debug(TAG, " Open bitmap error!");
}
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlLinearMipmapLinear);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, textureBitmap, 0);
GLES20.GlGenerateMipmap(GLES20.GlTexture2d);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
ShaderUtil.CheckGlError(TAG, "Init end.");
}
protected override int CreateTexture(Bitmap bmp, bool filter)
{
var id = new int[1];
GLES11.GlGenTextures(1, id, 0);
GLES11.GlBindTexture(GLES11.GlTexture2d, id[0]);
GLUtils.TexImage2D(GLES11.GlTexture2d, 0, bmp, 0);
GLES11.GlTexParameterx(GLES11.GlTexture2d, GLES11.GlTextureMinFilter, filter ? GLES11.GlLinear : GLES11.GlNearest);
GLES11.GlTexParameterx(GLES11.GlTexture2d, GLES11.GlTextureMagFilter, filter ? GLES11.GlLinear : GLES11.GlNearest);
GLES11.GlTexParameterx(GLES11.GlTexture2d, GLES11.GlTextureWrapS, GLES11.GlClampToEdge);
GLES11.GlTexParameterx(GLES11.GlTexture2d, GLES11.GlTextureWrapT, GLES11.GlClampToEdge);
bmp.Recycle();
return(id[0]);
}
/// <summary>
/// Allocates and initializes OpenGL resources needed by the plane renderer. Must be
/// called on the OpenGL thread, typically in
/// <see cref="GLSurfaceView.IRenderer.OnSurfaceCreated(IGL10, Javax.Microedition.Khronos.Egl.EGLConfig)"/>
/// </summary>
/// <param name="context">Needed to access shader source and texture PNG.</param>
/// <param name="gridDistanceTextureName">Name of the PNG file containing the grid texture.</param>
public void CreateOnGlThread(Context context, String gridDistanceTextureName)
{
int vertexShader = ShaderUtil.LoadGLShader(TAG, context,
GLES20.GlVertexShader, Resource.Raw.plane_vertex);
int passthroughShader = ShaderUtil.LoadGLShader(TAG, context,
GLES20.GlFragmentShader, Resource.Raw.plane_fragment);
mPlaneProgram = GLES20.GlCreateProgram();
GLES20.GlAttachShader(mPlaneProgram, vertexShader);
GLES20.GlAttachShader(mPlaneProgram, passthroughShader);
GLES20.GlLinkProgram(mPlaneProgram);
GLES20.GlUseProgram(mPlaneProgram);
ShaderUtil.CheckGLError(TAG, "Program creation");
// Read the texture.
var textureBitmap = Android.Graphics.BitmapFactory.DecodeStream(
context.Assets.Open(gridDistanceTextureName));
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlGenTextures(mTextures.Length, mTextures, 0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextures[0]);
GLES20.GlTexParameteri(GLES20.GlTexture2d,
GLES20.GlTextureMinFilter, GLES20.GlLinearMipmapLinear);
GLES20.GlTexParameteri(GLES20.GlTexture2d,
GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, textureBitmap, 0);
GLES20.GlGenerateMipmap(GLES20.GlTexture2d);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
ShaderUtil.CheckGLError(TAG, "Texture loading");
mPlaneXZPositionAlphaAttribute = GLES20.GlGetAttribLocation(mPlaneProgram,
"a_XZPositionAlpha");
mPlaneModelUniform = GLES20.GlGetUniformLocation(mPlaneProgram, "u_Model");
mPlaneModelViewProjectionUniform =
GLES20.GlGetUniformLocation(mPlaneProgram, "u_ModelViewProjection");
mTextureUniform = GLES20.GlGetUniformLocation(mPlaneProgram, "u_Texture");
mLineColorUniform = GLES20.GlGetUniformLocation(mPlaneProgram, "u_lineColor");
mDotColorUniform = GLES20.GlGetUniformLocation(mPlaneProgram, "u_dotColor");
mGridControlUniform = GLES20.GlGetUniformLocation(mPlaneProgram, "u_gridControl");
mPlaneUvMatrixUniform = GLES20.GlGetUniformLocation(mPlaneProgram, "u_PlaneUvMatrix");
ShaderUtil.CheckGLError(TAG, "Program parameters");
}
public Texture(Bitmap bitmap)
{
bitmap = ReverseBitmap(bitmap);
Width = bitmap.Width;
Height = bitmap.Height;
GL.GenTextures(1, out int code);
TextureCode = code;
Bind();
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
GLUtils.TexImage2D((int)TextureTarget.Texture2D, 0, bitmap, 0);
GL.GenerateMipmap(TextureTarget.Texture2D);
}
public static Texture2D GetTexture(InterpolationMode interpolation, params string[] path)
{
int pathhash = path.GetHashCode( );
if (!textureCache.ContainsKey(pathhash) || textureCache[pathhash].Disposed)
{
int width, height, id = GL.GenTexture( );
GL.BindTexture(TextureTarget.Texture2D, id);
#if __ANDROID__
using (BitmapFactory.Options options = new BitmapFactory.Options( )
{
InScaled = false
})
using (Stream stream = GetStream(path))
using (Bitmap bitmap = BitmapFactory.DecodeStream(stream, null, options)) {
GLUtils.TexImage2D((int)TextureTarget.Texture2D, 0, bitmap, 0);
width = bitmap.Width;
height = bitmap.Height;
}
#endif
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)interpolation);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)interpolation);
if (!textureCache.ContainsKey(pathhash))
{
textureCache.Add(pathhash, new Texture2D(id, new Size(width, height), path[path.Length - 1]));
}
else
{
textureCache[pathhash] = new Texture2D(id, new Size(width, height), path[path.Length - 1]);
}
#if DEBUG
if (id == 0 || Debug.CheckGL(typeof(Assets)))
{
Debug.Print(typeof(Assets), "failed loading image " + path[path.Length - 1]);
}
else
{
Debug.Print(typeof(Assets), "loaded image " + path[path.Length - 1]);
}
#endif
}
return(textureCache[pathhash]);
}
private void SetupImage()
{
// Create our UV coordinates.
uvs = new float[] {
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f,
1.0f, 0.0f
};
// The texture buffer
ByteBuffer byteBuffer = ByteBuffer.AllocateDirect(uvs.Length * 4);
byteBuffer.Order(ByteOrder.NativeOrder());
uvBuffer = byteBuffer.AsFloatBuffer();
uvBuffer.Put(uvs);
uvBuffer.Position(0);
// Generate Textures, if more needed, alter these numbers.
int[] textureIds = new int[1];
GLES20.GlGenTextures(1, textureIds, 0);
// Retrieve our image from resources.
Bitmap bitmap = BitmapFactory.DecodeResource(context.Resources, Resource.Drawable.plant07);
// Bind texture to texturename
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, textureIds[0]);
// Set filtering
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlLinear);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlLinear);
// Set wrapping mode
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
// Load the bitmap into the bound texture.
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, bitmap, 0);
// We are done using the bitmap so we should recycle it.
bitmap.Recycle();
bitmap.Dispose();
}
void LoadTextures()
{
// Generate textures
GLES20.GlGenTextures(2, _textures, 0);
// Load input bitmap
var bitmap = BitmapFactory.DecodeResource(Resources, Resource.Drawable.Lenna);
_imageWidth = bitmap.Width;
_imageHeight = bitmap.Height;
Renderer.UpdateTextureSize(_imageWidth, _imageHeight);
// Upload to texture
GLES20.GlBindTexture(GLES20.GlTexture2d, _textures [0]);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, bitmap, 0);
// Set texture parameters
GLToolbox.InitTexParams();
}
public int GetTexture(string path, InterpolationMode interpolation, out int width, out int height)
{
int id = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, id);
using (BitmapFactory.Options options = new BitmapFactory.Options()
{
InScaled = false
})
using (Stream stream = GetStream(path))
using (Bitmap bitmap = BitmapFactory.DecodeStream(stream, null, options)) {
GLUtils.TexImage2D((int)TextureTarget.Texture2D, 0, bitmap, 0);
width = bitmap.Width;
height = bitmap.Height;
}
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)interpolation);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)interpolation);
return(id);
}
public static int LoadGlTexture(Resources res, int resId)
{
var texture = new int[1];
GLES20.GlGenTextures(1, texture, 0);
if (texture [0] == 0)
{
throw new InvalidOperationException("Can't create texture");
}
var options = new Android.Graphics.BitmapFactory.Options {
InScaled = false
};
var bmp = Android.Graphics.BitmapFactory.DecodeResource(res, resId, options);
GLES20.GlBindTexture(GLES20.GlTexture2d, texture [0]);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlNearest);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlNearest);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, bmp, 0);
bmp.Recycle();
return(texture [0]);
}
private void HandleSetupImageTexture(uint texName, out Size size)
{
// create bitmap
Bitmap bitmap;
if (!bitmapFile.Equals(global::Android.Net.Uri.Empty))
{
var f = new Java.IO.File(bitmapFile.Path);
bitmap = BitmapFactory.DecodeFile(f.Path);
}
else
{
bitmap = BitmapFactory.DecodeResource(context.Resources, bitmapResource);
}
// set context image texture with bitmap
GLHelper.GetError();
GL.BindTexture(TextureTarget.Texture2D, ccContext.ImageTexName);
GLHelper.GetError();
GLUtils.TexImage2D(GLES30.GlTexture2d, 0, GLES30.GlRgba, bitmap, 0);
GLHelper.GetError();
GL.BindTexture(TextureTarget.Texture2D, 0);
GLHelper.GetError();
// Set size
size = new Size(bitmap.Width, bitmap.Height);
float radius = Math.Min(size.Width, size.Height) * 0.5f * 0.8f;
ccContext.CountLayerContext.SetROI(new Vector2(size.Width * 0.5f, size.Height * 0.5f), radius);
// Trigger center view
ccContext.CenterView(viewSize);
// recycle bitmap
bitmap.Recycle();
}
private void InitGlTextureData(Context context)
{
ShaderUtil.CheckGlError(TAG, "Init gl texture data start.");
Bitmap textureBitmap = null;
AssetManager assets = context.Assets;
try
{
var sr = assets.Open("AR_logo.png");
textureBitmap = BitmapFactory.DecodeStream(sr);
}
catch (Exception e)
{
Log.Debug(TAG, " Open Bitmap Error! ");
return;
}
ShaderUtil.CheckGlError(TAG, "bitmap error.");
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, textureBitmap, 0);
GLES20.GlGenerateMipmap(GLES20.GlTexture2d);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
textureBitmap.Recycle();
ShaderUtil.CheckGlError(TAG, "Init gl texture data end.");
}
public void OnDrawFrame(IGL10 gl)
{
// First allocate texture if there is not one yet.
if (DRAW_TEXTURE && mTextureIds == null)
{
// Generate texture.
mTextureIds = new int[2];
gl.GlGenTextures(2, mTextureIds, 0);
foreach (int textureId in mTextureIds)
{
// Set texture attributes.
gl.GlBindTexture(GL10.GlTexture2d, textureId);
gl.GlTexParameterf(GL10.GlTexture2d,
GL10.GlTextureMinFilter, GL10.GlNearest);
gl.GlTexParameterf(GL10.GlTexture2d,
GL10.GlTextureMagFilter, GL10.GlNearest);
gl.GlTexParameterf(GL10.GlTexture2d, GL10.GlTextureWrapS,
GL10.GlClampToEdge);
gl.GlTexParameterf(GL10.GlTexture2d, GL10.GlTextureWrapT,
GL10.GlClampToEdge);
}
}
if (DRAW_TEXTURE && mTexturePage.TexturesChanged)
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[0]);
Bitmap texture = mTexturePage.GetTexture(mTextureRectFront,
CurlPage.SIDE_FRONT);
GLUtils.TexImage2D(GL10.GlTexture2d, 0, texture, 0);
texture.Recycle();
mTextureBack = mTexturePage.HasBackTexture;
if (mTextureBack)
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[1]);
texture = mTexturePage.GetTexture(mTextureRectBack,
CurlPage.SIDE_BACK);
GLUtils.TexImage2D(GL10.GlTexture2d, 0, texture, 0);
texture.Recycle();
}
else
{
mTextureRectBack.Set(mTextureRectFront);
}
mTexturePage.Recycle();
Reset();
}
// Some 'global' settings.
gl.GlEnableClientState(GL10.GlVertexArray);
// TODO: Drop shadow drawing is done temporarily here to hide some
// problems with its calculation.
if (DRAW_SHADOW)
{
gl.GlDisable(GL10.GlTexture2d);
gl.GlEnable(GL10.GlBlend);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlColorPointer(4, GL10.GlFloat, 0, mBufShadowColors);
gl.GlVertexPointer(3, GL10.GlFloat, 0, mBufShadowVertices);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, mDropShadowCount);
gl.GlDisableClientState(GL10.GlColorArray);
gl.GlDisable(GL10.GlBlend);
}
if (DRAW_TEXTURE)
{
gl.GlEnableClientState(GL10.GlTextureCoordArray);
gl.GlTexCoordPointer(2, GL10.GlFloat, 0, mBufTexCoords);
}
gl.GlVertexPointer(3, GL10.GlFloat, 0, mBufVertices);
// Enable color array.
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlColorPointer(4, GL10.GlFloat, 0, mBufColors);
// Draw front facing blank vertices.
gl.GlDisable(GL10.GlTexture2d);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, mVerticesCountFront);
// Draw front facing texture.
if (DRAW_TEXTURE)
{
gl.GlEnable(GL10.GlBlend);
gl.GlEnable(GL10.GlTexture2d);
if (!mFlipTexture || !mTextureBack)
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[0]);
}
else
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[1]);
}
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, mVerticesCountFront);
gl.GlDisable(GL10.GlBlend);
gl.GlDisable(GL10.GlTexture2d);
}
int backStartIdx = Math.Max(0, mVerticesCountFront - 2);
int backCount = mVerticesCountFront + mVerticesCountBack - backStartIdx;
// Draw back facing blank vertices.
gl.GlDrawArrays(GL10.GlTriangleStrip, backStartIdx, backCount);
// Draw back facing texture.
if (DRAW_TEXTURE)
{
gl.GlEnable(GL10.GlBlend);
gl.GlEnable(GL10.GlTexture2d);
if (mFlipTexture || !mTextureBack)
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[0]);
}
else
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[1]);
}
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlDrawArrays(GL10.GlTriangleStrip, backStartIdx, backCount);
gl.GlDisable(GL10.GlBlend);
gl.GlDisable(GL10.GlTexture2d);
}
// Disable textures and color array.
gl.GlDisableClientState(GL10.GlTextureCoordArray);
gl.GlDisableClientState(GL10.GlColorArray);
if (DRAW_POLYGON_OUTLINES)
{
gl.GlEnable(GL10.GlBlend);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlLineWidth(1.0f);
gl.GlColor4f(0.5f, 0.5f, 1.0f, 1.0f);
gl.GlVertexPointer(3, GL10.GlFloat, 0, mBufVertices);
gl.GlDrawArrays(GL10.GlLineStrip, 0, mVerticesCountFront);
gl.GlDisable(GL10.GlBlend);
}
if (DRAW_CURL_POSITION)
{
gl.GlEnable(GL10.GlBlend);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlLineWidth(1.0f);
gl.GlColor4f(1.0f, 0.5f, 0.5f, 1.0f);
gl.GlVertexPointer(2, GL10.GlFloat, 0, mBufCurlPositionLines);
gl.GlDrawArrays(GL10.GlLines, 0, mCurlPositionLinesCount * 2);
gl.GlDisable(GL10.GlBlend);
}
if (DRAW_SHADOW)
{
gl.GlEnable(GL10.GlBlend);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlColorPointer(4, GL10.GlFloat, 0, mBufShadowColors);
gl.GlVertexPointer(3, GL10.GlFloat, 0, mBufShadowVertices);
gl.GlDrawArrays(GL10.GlTriangleStrip, mDropShadowCount,
mSelfShadowCount);
gl.GlDisableClientState(GL10.GlColorArray);
gl.GlDisable(GL10.GlBlend);
}
gl.GlDisableClientState(GL10.GlVertexArray);
}
/**
* Creates and initializes OpenGL resources needed for rendering the model.
*
* @param context Context for loading the shader and below-named model and texture assets.
* @param objAssetName Name of the OBJ file containing the model geometry.
* @param diffuseTextureAssetName Name of the PNG file containing the diffuse texture map.
*/
public void CreateOnGlThread(Context context, string objAssetName, string diffuseTextureAssetName)
{
// Read the texture.
var textureBitmap = BitmapFactory.DecodeStream(context.Assets.Open(diffuseTextureAssetName));
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlGenTextures(mTextures.Length, mTextures, 0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextures[0]);
GLES20.GlTexParameteri(GLES20.GlTexture2d,
GLES20.GlTextureMinFilter, GLES20.GlLinearMipmapLinear);
GLES20.GlTexParameteri(GLES20.GlTexture2d,
GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, textureBitmap, 0);
GLES20.GlGenerateMipmap(GLES20.GlTexture2d);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
textureBitmap.Recycle();
ShaderUtil.CheckGLError(TAG, "Texture loading");
// Read the obj file.
var objInputStream = context.Assets.Open(objAssetName);
var obj = ObjReader.Read(objInputStream);
// Prepare the Obj so that its structure is suitable for
// rendering with OpenGL:
// 1. Triangulate it
// 2. Make sure that texture coordinates are not ambiguous
// 3. Make sure that normals are not ambiguous
// 4. Convert it to single-indexed data
obj = ObjUtils.ConvertToRenderable(obj);
// OpenGL does not use Java arrays. ByteBuffers are used instead to provide data in a format
// that OpenGL understands.
// Obtain the data from the OBJ, as direct buffers:
IntBuffer wideIndices = ObjData.GetFaceVertexIndices(obj, 3);
FloatBuffer vertices = ObjData.GetVertices(obj);
FloatBuffer texCoords = ObjData.GetTexCoords(obj, 2);
FloatBuffer normals = ObjData.GetNormals(obj);
// Convert int indices to shorts for GL ES 2.0 compatibility
ShortBuffer indices = ByteBuffer.AllocateDirect(2 * wideIndices.Limit())
.Order(ByteOrder.NativeOrder()).AsShortBuffer();
while (wideIndices.HasRemaining)
{
indices.Put((short)wideIndices.Get());
}
indices.Rewind();
var buffers = new int[2];
GLES20.GlGenBuffers(2, buffers, 0);
mVertexBufferId = buffers[0];
mIndexBufferId = buffers[1];
// Load vertex buffer
mVerticesBaseAddress = 0;
mTexCoordsBaseAddress = mVerticesBaseAddress + 4 * vertices.Limit();
mNormalsBaseAddress = mTexCoordsBaseAddress + 4 * texCoords.Limit();
int totalBytes = mNormalsBaseAddress + 4 * normals.Limit();
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, mVertexBufferId);
GLES20.GlBufferData(GLES20.GlArrayBuffer, totalBytes, null, GLES20.GlStaticDraw);
GLES20.GlBufferSubData(
GLES20.GlArrayBuffer, mVerticesBaseAddress, 4 * vertices.Limit(), vertices);
GLES20.GlBufferSubData(
GLES20.GlArrayBuffer, mTexCoordsBaseAddress, 4 * texCoords.Limit(), texCoords);
GLES20.GlBufferSubData(
GLES20.GlArrayBuffer, mNormalsBaseAddress, 4 * normals.Limit(), normals);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
// Load index buffer
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, mIndexBufferId);
mIndexCount = indices.Limit();
GLES20.GlBufferData(
GLES20.GlElementArrayBuffer, 2 * mIndexCount, indices, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, 0);
ShaderUtil.CheckGLError(TAG, "OBJ buffer load");
int vertexShader = ShaderUtil.LoadGLShader(TAG, context,
GLES20.GlVertexShader, Resource.Raw.object_vertex);
int fragmentShader = ShaderUtil.LoadGLShader(TAG, context,
GLES20.GlFragmentShader, Resource.Raw.object_fragment);
mProgram = GLES20.GlCreateProgram();
GLES20.GlAttachShader(mProgram, vertexShader);
GLES20.GlAttachShader(mProgram, fragmentShader);
GLES20.GlLinkProgram(mProgram);
GLES20.GlUseProgram(mProgram);
ShaderUtil.CheckGLError(TAG, "Program creation");
mModelViewUniform = GLES20.GlGetUniformLocation(mProgram, "u_ModelView");
mModelViewProjectionUniform =
GLES20.GlGetUniformLocation(mProgram, "u_ModelViewProjection");
mPositionAttribute = GLES20.GlGetAttribLocation(mProgram, "a_Position");
mNormalAttribute = GLES20.GlGetAttribLocation(mProgram, "a_Normal");
mTexCoordAttribute = GLES20.GlGetAttribLocation(mProgram, "a_TexCoord");
mTextureUniform = GLES20.GlGetUniformLocation(mProgram, "u_Texture");
mLightingParametersUniform = GLES20.GlGetUniformLocation(mProgram, "u_LightingParameters");
mMaterialParametersUniform = GLES20.GlGetUniformLocation(mProgram, "u_MaterialParameters");
ShaderUtil.CheckGLError(TAG, "Program parameters");
Android.Opengl.Matrix.SetIdentityM(mModelMatrix, 0);
}
public void OnSurfaceCreated(IGL10 gl, Javax.Microedition.Khronos.Egl.EGLConfig config)
{
const float coord = 1.0f;
// Cube coords
// X, Y, Z = 1 vertex * 3 = 1 face * 12 = 1 cube
float[] triangleVerticesData =
{
-coord, -coord, -coord,
-coord, -coord, coord,
-coord, coord, coord,
coord, coord, -coord,
-coord, -coord, -coord,
-coord, coord, -coord,
coord, -coord, coord,
-coord, -coord, -coord,
coord, -coord, -coord,
coord, coord, -coord,
coord, -coord, -coord,
-coord, -coord, -coord,
-coord, -coord, -coord,
-coord, coord, coord,
-coord, coord, -coord,
coord, -coord, coord,
-coord, -coord, coord,
-coord, -coord, -coord,
-coord, coord, coord,
-coord, -coord, coord,
coord, -coord, coord,
coord, coord, coord,
coord, -coord, -coord,
coord, coord, -coord,
coord, -coord, -coord,
coord, coord, coord,
coord, -coord, coord,
coord, coord, coord,
coord, coord, -coord,
-coord, coord, -coord,
coord, coord, coord,
-coord, coord, -coord,
-coord, coord, coord,
coord, coord, coord,
-coord, coord, coord,
coord, -coord, coord
};
FloatBuffer mTriangleVertices = ByteBuffer.AllocateDirect(triangleVerticesData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleVertices.Put(triangleVerticesData).Flip();
// Cube colors
// R, G, B, A
float[] triangleColorsData =
{
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(triangleColorsData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleColors.Put(triangleColorsData).Flip();
//Cube texture UV Map
float[] triangleTextureUVMapData =
{
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f
};
FloatBuffer mTriangleTextureUVMap = ByteBuffer.AllocateDirect(triangleTextureUVMapData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleTextureUVMap.Put(triangleTextureUVMapData).Flip();
//triagles normals
//This normal array is not right, it is spacialy DO FOR demonstrate how normals work with faces when light is calculated at shader program
float[] triangleNormalData =
{
// Front face
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
// Right face
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
// Back face
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
// Left face
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
// Top face
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
// Bottom face
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f
};
FloatBuffer mTriangleNormal = ByteBuffer.AllocateDirect(triangleNormalData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleNormal.Put(triangleNormalData).Flip();
//Data buffers to VBO
GLES20.GlGenBuffers(4, 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, VBOBuffers[3]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleNormal.Capacity() * mBytesPerFloat, mTriangleNormal, 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.texture1, 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(0.0f, 0.0f, 0.0f, 0.0f);
// 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);
//all "attribute" variables is "triagles" VBO (arrays) items representation
//a_Possition[0] <=> a_Color[0] <=> a_TextureCoord[0] <=> a_Normal[0]
//a_Possition[1] <=> a_Color[1] <=> a_TextureCoord[1] <=> a_Normal[1]
//...
//a_Possition[n] <=> a_Color[n] <=> a_TextureCoord[n] <=> a_Normal[n] -- where "n" is object buffers length
//-> HOW MANY faces in your object (model) in VBO -> how many times the vertex shader will be called by OpenGL
string vertexShader =
"uniform mat4 u_MVPMatrix; \n" // A constant representing the combined model/view/projection matrix.
+ "uniform vec3 u_LightPos; \n" // A constant representing the light source position
+ "attribute vec4 a_Position; \n" // Per-vertex position information we will pass in. (it means vec4[x,y,z,w] but we put only x,y,z at this sample
+ "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" // Per-vertex texture UVMap information we will pass in.
+ "varying vec2 v_TextureCoord; \n" // This will be passed into the fragment shader.
+ "attribute vec3 a_Normal; \n" // Per-vertex normals information we will pass in.
+ "void main() \n" // The entry point for our vertex shader.
+ "{ \n"
//light calculation section for fragment shader
+ " vec3 modelViewVertex = vec3(u_MVPMatrix * a_Position);\n"
+ " vec3 modelViewNormal = vec3(u_MVPMatrix * vec4(a_Normal, 0.0));\n"
+ " float distance = length(u_LightPos - modelViewVertex);\n"
+ " vec3 lightVector = normalize(u_LightPos - modelViewVertex);\n"
+ " float diffuse = max(dot(modelViewNormal, lightVector), 0.1);\n"
+ " diffuse = diffuse * (1.0 / (1.0 + (0.25 * distance * distance)));\n"
+ " v_Color = a_Color * vec4(diffuse);\n" //Pass the color with light aspect to fragment shader
+ " v_TextureCoord = a_TextureCoord; \n" // Pass the texture coordinate 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" // This is the texture coordinate from the vertex shader interpolated across the triangle per fragment.
+ "uniform sampler2D u_Texture; \n" // This is the texture image handler
+ "void main() \n" // The entry point for our fragment shader.
+ "{ \n"
+ " gl_FragColor = texture2D(u_Texture, v_TextureCoord) * v_Color; \n" // Pass the color directly through the pipeline.
+ "} \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");
GLES20.GlBindAttribLocation(programHandle, 3, "a_Normal");
// 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");
mLightPos = GLES20.GlGetUniformLocation(programHandle, "u_LightPos");
mPositionHandle = GLES20.GlGetAttribLocation(programHandle, "a_Position");
mColorHandle = GLES20.GlGetAttribLocation(programHandle, "a_Color");
mTextureCoordHandle = GLES20.GlGetAttribLocation(programHandle, "a_TextureCoord");
mNormalHandle = GLES20.GlGetAttribLocation(programHandle, "a_Normal");
mTextureHandle = GLES20.GlGetUniformLocation(programHandle, "u_Texture");
// Tell OpenGL to use this program when rendering.
GLES20.GlUseProgram(programHandle);
}
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);
}
public void CreateOnGlThread(Context context, string objAssetName, string diffuseTextureAssetName)
{
// Read the texture.
var textureBitmap = BitmapFactory.DecodeStream(context.Assets.Open(diffuseTextureAssetName));
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlGenTextures(mTextures.Length, mTextures, 0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextures[0]);
GLES20.GlTexParameteri(GLES20.GlTexture2d,
GLES20.GlTextureMinFilter, GLES20.GlLinearMipmapLinear);
GLES20.GlTexParameteri(GLES20.GlTexture2d,
GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, textureBitmap, 0);
GLES20.GlGenerateMipmap(GLES20.GlTexture2d);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
textureBitmap.Recycle();
ShaderUtil.CheckGLError(TAG, "Texture loading");
// Read the obj file.
var objInputStream = context.Assets.Open(objAssetName);
var obj = JavaGl.Obj.ObjReader.Read(objInputStream);
obj = JavaGl.Obj.ObjUtils.ConvertToRenderable(obj);
IntBuffer wideIndices = JavaGl.Obj.ObjData.GetFaceVertexIndices(obj, 3);
FloatBuffer vertices = JavaGl.Obj.ObjData.GetVertices(obj);
FloatBuffer texCoords = JavaGl.Obj.ObjData.GetTexCoords(obj, 2);
FloatBuffer normals = JavaGl.Obj.ObjData.GetNormals(obj);
ShortBuffer indices = ByteBuffer.AllocateDirect(2 * wideIndices.Limit())
.Order(ByteOrder.NativeOrder()).AsShortBuffer();
while (wideIndices.HasRemaining)
{
indices.Put((short)wideIndices.Get());
}
indices.Rewind();
var buffers = new int[2];
GLES20.GlGenBuffers(2, buffers, 0);
mVertexBufferId = buffers[0];
mIndexBufferId = buffers[1];
mVerticesBaseAddress = 0;
mTexCoordsBaseAddress = mVerticesBaseAddress + 4 * vertices.Limit();
mNormalsBaseAddress = mTexCoordsBaseAddress + 4 * texCoords.Limit();
int totalBytes = mNormalsBaseAddress + 4 * normals.Limit();
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, mVertexBufferId);
GLES20.GlBufferData(GLES20.GlArrayBuffer, totalBytes, null, GLES20.GlStaticDraw);
GLES20.GlBufferSubData(
GLES20.GlArrayBuffer, mVerticesBaseAddress, 4 * vertices.Limit(), vertices);
GLES20.GlBufferSubData(
GLES20.GlArrayBuffer, mTexCoordsBaseAddress, 4 * texCoords.Limit(), texCoords);
GLES20.GlBufferSubData(
GLES20.GlArrayBuffer, mNormalsBaseAddress, 4 * normals.Limit(), normals);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, mIndexBufferId);
mIndexCount = indices.Limit();
GLES20.GlBufferData(
GLES20.GlElementArrayBuffer, 2 * mIndexCount, indices, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, 0);
ShaderUtil.CheckGLError(TAG, "OBJ buffer load");
int vertexShader = ShaderUtil.LoadGLShader(TAG, context,
GLES20.GlVertexShader, Resource.Raw.object_vertex);
int fragmentShader = ShaderUtil.LoadGLShader(TAG, context,
GLES20.GlFragmentShader, Resource.Raw.object_fragment);
mProgram = GLES20.GlCreateProgram();
GLES20.GlAttachShader(mProgram, vertexShader);
GLES20.GlAttachShader(mProgram, fragmentShader);
GLES20.GlLinkProgram(mProgram);
GLES20.GlUseProgram(mProgram);
ShaderUtil.CheckGLError(TAG, "Program creation");
mModelViewUniform = GLES20.GlGetUniformLocation(mProgram, "u_ModelView");
mModelViewProjectionUniform =
GLES20.GlGetUniformLocation(mProgram, "u_ModelViewProjection");
mPositionAttribute = GLES20.GlGetAttribLocation(mProgram, "a_Position");
mNormalAttribute = GLES20.GlGetAttribLocation(mProgram, "a_Normal");
mTexCoordAttribute = GLES20.GlGetAttribLocation(mProgram, "a_TexCoord");
mTextureUniform = GLES20.GlGetUniformLocation(mProgram, "u_Texture");
mLightingParametersUniform = GLES20.GlGetUniformLocation(mProgram, "u_LightingParameters");
mMaterialParametersUniform = GLES20.GlGetUniformLocation(mProgram, "u_MaterialParameters");
ShaderUtil.CheckGLError(TAG, "Program parameters");
Android.Opengl.Matrix.SetIdentityM(mModelMatrix, 0);
}
// see http://deathbyalgorithm.blogspot.fr/2013/05/opentk-textures.html
public static int LoadTexture(string name, int quality, bool repeat, bool flip_y)
{
string prefix;
#if __IOS__
prefix = "OpenGLDemo.iOS.";
#endif
#if __ANDROID__
prefix = "OpenGLDemo.Droid.";
#endif
var assembly = typeof(App2).GetTypeInfo().Assembly;
// foreach (var res in assembly.GetManifestResourceNames())
// System.Diagnostics.Debug.WriteLine("found resource: " + res);
Stream stream = assembly.GetManifestResourceStream(prefix + name + ".png");
byte[] imageData;
using (MemoryStream ms = new MemoryStream())
{
stream.CopyTo(ms);
imageData = ms.ToArray();
}
#if __ANDROID__
Bitmap b = BitmapFactory.DecodeByteArray(imageData, 0, imageData.Length);
#elif __IOS__
UIImage image = ImageFromByteArray(imageData);
int width = (int)image.CGImage.Width;
int height = (int)image.CGImage.Height;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
byte[] imageData2 = new byte[height * width * 4];
CGContext context = new CGBitmapContext(imageData2, width, height, 8, 4 * width, colorSpace,
CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big);
colorSpace.Dispose();
context.ClearRect(new RectangleF(0, 0, width, height));
context.DrawImage(new RectangleF(0, 0, width, height), image.CGImage);
#endif
int [] textures = new int[1];
//Generate a new texture target in gl
GL.GenTextures(1, textures);
//Will bind the texture newly/empty created with GL.GenTexture
//All gl texture methods targeting Texture2D will relate to this texture
GL.BindTexture(TextureTarget.Texture2D, textures[0]);
//The reason why your texture will show up glColor without setting these parameters is actually
//TextureMinFilters fault as its default is NearestMipmapLinear but we have not established mipmapping
//We are only using one texture at the moment since mipmapping is a collection of textures pre filtered
//I'm assuming it stops after not having a collection to check.
switch (quality)
{
case 1: //High quality
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);
break;
//case 0:
default: //Low quality
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Nearest);
break;
}
if (repeat)
{
//This will repeat the texture past its bounds set by TexImage2D
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.Repeat);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.Repeat);
}
else
{
//This will clamp the texture to the edge, so manipulation will result in skewing
//It can also be useful for getting rid of repeating texture bits at the borders
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.ClampToEdge);
}
#if __ANDROID__
GLUtils.TexImage2D((int)All.Texture2D, 0, b, 0);
b.Recycle();
#elif __IOS__
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, width, height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, imageData2);
#endif
GL.BindTexture(TextureTarget.Texture2D, 0);
return(textures[0]);
}
