public void OnDrawFrame(Javax.Microedition.Khronos.Opengles.IGL10 gl)
{
float[] scratch = new float[16];
// Draw background color
GLES20.GlClear(GLES20.GlColorBufferBit);
//synchronized (this) {
if (mUpdateST)
{
mSTexture.UpdateTexImage();
mUpdateST = false;
}
//}
GLES20.GlUseProgram(hProgram);
int ph = GLES20.GlGetAttribLocation(hProgram, "vPosition");
int tch = GLES20.GlGetAttribLocation(hProgram, "vTexCoord");
int th = GLES20.GlGetUniformLocation(hProgram, "sTexture");
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES11Ext.GlTextureExternalOes, hTex[0]);
GLES20.GlUniform1i(th, 0);
GLES20.GlVertexAttribPointer(ph, 2, GLES20.GlFloat, false, 4 * 2, pVertex);
GLES20.GlVertexAttribPointer(tch, 2, GLES20.GlFloat, false, 4 * 2, pTexCoord);
GLES20.GlEnableVertexAttribArray(ph);
GLES20.GlEnableVertexAttribArray(tch);
GLES20.GlDrawArrays(GLES20.GlTriangleStrip, 0, 4);
// Set the camera position (View matrix)
Android.Opengl.Matrix.SetLookAtM(mViewMatrix, 0, 0, 0, -3, 0f, 0f, 0f, 0f, 1.0f, 0.0f);
// Calculate the projection and view transformation
Android.Opengl.Matrix.MultiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mViewMatrix, 0);
// Create a rotation for the triangle
// Use the following code to generate constant rotation.
// Leave this code out when using TouchEvents.
// long time = SystemClock.uptimeMillis() % 4000L;
// float angle = 0.090f * ((int) time);
Android.Opengl.Matrix.SetRotateM(mRotationMatrix, 0, mAngle, 0, 0, 1.0f);
// Combine the rotation matrix with the projection and camera view
// Note that the mMVPMatrix factor *must be first* in order
// for the matrix multiplication product to be correct.
Android.Opengl.Matrix.MultiplyMM(scratch, 0, mMVPMatrix, 0, mRotationMatrix, 0);
// Draw triangle
mTriangle.draw(scratch);
}
public void OnDrawFrame(IGL10 gl)
{
GLES20.GlClear(GLES20.GlColorBufferBit | GLES20.GlDepthBufferBit);
// Draw the triangle facing straight on.
angleInDegrees += 0.2f;
//Prepare model transformation matrix
float[] mModelMatrix = new float[16];
Matrix.SetIdentityM(mModelMatrix, 0);
Matrix.RotateM(mModelMatrix, 0, angleInDegrees, 1.0f, 0.0f, 0.0f);
//Draw with VBO
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[0]);
GLES20.GlEnableVertexAttribArray(mPositionHandle);
GLES20.GlVertexAttribPointer(mPositionHandle, mPositionDataSize, GLES20.GlFloat, false, 0, 0);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[1]);
GLES20.GlEnableVertexAttribArray(mColorHandle);
GLES20.GlVertexAttribPointer(mColorHandle, mColorDataSize, GLES20.GlFloat, false, 0, 0);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[2]);
GLES20.GlEnableVertexAttribArray(mTextureCoordHandle);
GLES20.GlVertexAttribPointer(mTextureCoordHandle, 2, GLES20.GlFloat, false, 0, 0);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[3]);
GLES20.GlEnableVertexAttribArray(mNormalHandle);
GLES20.GlVertexAttribPointer(mNormalHandle, 3, GLES20.GlFloat, false, 0, 0);
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, textureHandle[0]);
GLES20.GlUniform1i(mTextureHandle, 0);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
//END OF Draw with VBO
//light position
// GLES20.GlUniform3f(mLightPos, 0.0f, 0.0f, angleInDegrees);
GLES20.GlUniform3f(mLightPos, 0.0f, 0.0f, 0.0f);
// This multiplies the view matrix by the model matrix, and stores the result in the MVP matrix
// (which currently contains model * view).
// Allocate storage for the final combined matrix. This will be passed into the shader program. */
float[] mMVPMatrix = new float[16];
Matrix.MultiplyMM(mMVPMatrix, 0, mViewMatrix, 0, mModelMatrix, 0);
// This multiplies the modelview matrix by the projection matrix, and stores the result in the MVP matrix
// (which now contains model * view * projection).
// THIS IS NOT WORK AT C# Matrix class -> Matrix.MultiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
float[] _mMVPMatrix = new float[16];
Matrix.MultiplyMM(_mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
GLES20.GlUniformMatrix4fv(mMVPMatrixHandle, 1, false, _mMVPMatrix, 0);
GLES20.GlDrawArrays(GLES20.GlTriangles, 0, 3 * 12); //Cube has 12 triagle faces each face has 3 coord
}
public void OnSurfaceCreated(Javax.Microedition.Khronos.Opengles.IGL10 gl, Javax.Microedition.Khronos.Egl.EGLConfig config)
{
_glProgram = CreateProgram(mVertexShader, mFragmentShader);
var extensions = " " + GLES20.GlGetString(GLES20.GlExtensions) + " ";
var ok = extensions.IndexOf("GL_OES_framebuffer_object") >= 0;
var ab = extensions;
if (_glProgram == 0)
{
return;
}
GLES20.GlUseProgram(0);
GLES20.GlUseProgram(_glProgram);
_aPositionHandle = ActOnError(GLES20.GlGetAttribLocation(_glProgram, "aPosition"), "aPosition");
_aTextureCoord = ActOnError(GLES20.GlGetAttribLocation(_glProgram, "aTextureCoord"), "aTextureCoord");
_uMVPMatrixHandle = ActOnError(GLES20.GlGetUniformLocation(_glProgram, "uMVPMatrix"), "uMVPMatrix");
_uSTMatrixHandle = ActOnError(GLES20.GlGetUniformLocation(_glProgram, "uSTMatrix"), "uSTMatrix");
_OESTextureUniform = ActOnError(GLES20.GlGetUniformLocation(_glProgram, textureName), textureName);
_otherTextureUniform = ActOnError(GLES20.GlGetUniformLocation(_glProgram, "overlay"), "overlay");
int[] textures = new int[1];
GLES20.GlGenTextures(1, textures, 0);
_OESTextureId = textures[0];
GLES20.GlUseProgram(0);
GLES20.GlUseProgram(_glProgram);
GLES20.GlActiveTexture(GLES20.GlTexture1);
GLES20.GlBindTexture(GL_TEXTURE_EXTERNAL_OES, _OESTextureId);
GLES20.GlUniform1i(_OESTextureUniform, 1);
GLES20.GlUseProgram(0);
GLES20.GlUseProgram(_glProgram);
GLES20.GlTexParameterf(GL_TEXTURE_EXTERNAL_OES, GLES20.GlTextureMinFilter,
GLES20.GlNearest);
GLES20.GlTexParameterf(GL_TEXTURE_EXTERNAL_OES, GLES20.GlTextureMagFilter,
GLES20.GlLinear);
_surfaceTexture = new SurfaceTexture(_OESTextureId);
_surfaceTexture.FrameAvailable += _surfaceTexture_FrameAvailable;
Surface surface = new Surface(_surfaceTexture);
_mediaPlayer.SetSurface(surface);
surface.Release();
_otherTextureId = CreateTargetTexture();
GLES20.GlActiveTexture(GLES20.GlTexture2);
GLES20.GlBindTexture(GLES20.GlTexture2d, _otherTextureId);
GLES20.GlUniform1i(_otherTextureUniform, 2);
_updateSurface = false;
_mediaPlayer.Start();
}
/// <summary>
/// Draw face geometrical features. This method is called on each frame.
/// </summary>
private void DrawFaceGeometry()
{
ShaderUtil.CheckGlError(TAG, "Before draw.");
Log.Debug(TAG, "Draw face geometry: mPointsNum: " + mPointsNum + " mTrianglesNum: " + mTrianglesNum);
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextureName);
GLES20.GlUniform1i(mTextureUniform, 0);
ShaderUtil.CheckGlError(TAG, "Init texture.");
GLES20.GlEnable(GLES20.GlDepthTest);
GLES20.GlEnable(GL_CULL_FACE_CONSTANT);
// Draw point.
GLES20.GlUseProgram(mProgram);
ShaderUtil.CheckGlError(TAG, "Draw point.");
GLES20.GlEnableVertexAttribArray(mPositionAttribute);
GLES20.GlEnableVertexAttribArray(mTextureCoordAttribute);
GLES20.GlEnableVertexAttribArray(mColorUniform);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, mVerticeId);
GLES20.GlVertexAttribPointer(mPositionAttribute, POSITION_COMPONENTS_NUMBER, GLES20.GlFloat, false,
BYTES_PER_POINT, 0);
GLES20.GlVertexAttribPointer(mTextureCoordAttribute, TEXCOORD_COMPONENTS_NUMBER, GLES20.GlFloat, false,
BYTES_PER_COORD, 0);
GLES20.GlUniform4f(mColorUniform, 1.0f, 0.0f, 0.0f, 1.0f);
GLES20.GlUniformMatrix4fv(mModelViewProjectionUniform, 1, false, mModelViewProjections, 0);
GLES20.GlUniform1f(mPointSizeUniform, 5.0f); // Set the size of Point to 5.
GLES20.GlDrawArrays(GLES20.GlPoints, 0, mPointsNum);
GLES20.GlDisableVertexAttribArray(mColorUniform);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
ShaderUtil.CheckGlError(TAG, "Draw point.");
// Draw triangles.
GLES20.GlEnableVertexAttribArray(mColorUniform);
// Clear the color and use the texture color to draw triangles.
GLES20.GlUniform4f(mColorUniform, 0.0f, 0.0f, 0.0f, 0.0f);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, mTriangleId);
// The number of input triangle points
GLES20.GlDrawElements(GLES20.GlTriangles, mTrianglesNum * 3, GLES20.GlUnsignedInt, 0);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, 0);
GLES20.GlDisableVertexAttribArray(mColorUniform);
ShaderUtil.CheckGlError(TAG, "Draw triangles.");
GLES20.GlDisableVertexAttribArray(mTextureCoordAttribute);
GLES20.GlDisableVertexAttribArray(mPositionAttribute);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
GLES20.GlDisable(GLES20.GlDepthTest);
GLES20.GlDisable(GL_CULL_FACE_CONSTANT);
ShaderUtil.CheckGlError(TAG, "Draw after.");
}
/**
* \brief Draw this mesh (in OpenGL).
* @param modelViewProjection this mesh model-view-projection matrix.
*/
public void DrawMesh(float[] modelViewProjection)
{
//set up gl state
GLES20.GlEnable(GLES20.GlDepthTest);
//GLES20.GlDisable(GLES20.GlCullFaceMode);
GLES20.GlCullFace(GLES20.GlBack);
GLES20.GlFrontFace(GLES20.GlCw);
//set shader program to use
GLES20.GlUseProgram(mProgram_GL_ID);
RenderUtils.CheckGLError("DrawMesh:glUseProgram");
//find attrib and unifroms in shader program
int vertexHandle = GLES20.GlGetAttribLocation(mProgram_GL_ID, "vertexPosition");
//int normalHandle = GLES20.GlGetAttribLocation(Program_GL_ID, "vertexNormal");
int textureCoordHandle = GLES20.GlGetAttribLocation(mProgram_GL_ID, "vertexTexCoord");
int mvpMatrixHandle = GLES20.GlGetUniformLocation(mProgram_GL_ID, "modelViewProjectionMatrix");
int texSampler2DHandle = GLES20.GlGetUniformLocation(mProgram_GL_ID, "texSampler2D");
RenderUtils.CheckGLError("DrawMesh:get attribs and uniforms");
//upload mesh data to OpenGL attribs
GLES20.GlVertexAttribPointer(vertexHandle, 3, GLES20.GlFloat, false, 0, mVertices_Buffer);
//GLES20.GlVertexAttribPointer(normalHandle, 3, GLES20.GlFloat, false, 0, Normals_Buffer);
GLES20.GlVertexAttribPointer(textureCoordHandle, 2, GLES20.GlFloat, false, 0, mTexCoords_Buffer);
RenderUtils.CheckGLError("DrawMesh:put attrib pointers");
//enable gl attribs to use
GLES20.GlEnableVertexAttribArray(vertexHandle);
//GLES20.GlEnableVertexAttribArray(normalHandle);
GLES20.GlEnableVertexAttribArray(textureCoordHandle);
RenderUtils.CheckGLError("DrawMesh:enable attrib arrays");
// activate texture 0, bind it, and pass to shader
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTexture_GL_ID);
GLES20.GlUniform1i(texSampler2DHandle, 0);
RenderUtils.CheckGLError("DrawMesh:activate texturing");
// pass the model view matrix to the shader
GLES20.GlUniformMatrix4fv(mvpMatrixHandle, 1, false, modelViewProjection, 0);
RenderUtils.CheckGLError("DrawMesh:upload matrix");
// finally draw the teapot
GLES20.GlDrawElements(GLES20.GlTriangles, mIndices_Number, GLES20.GlUnsignedShort, mIndex_Buffer);
RenderUtils.CheckGLError("DrawMesh:draw elements");
// disable the enabled arrays
GLES20.GlDisableVertexAttribArray(vertexHandle);
//GLES20.GlDisableVertexAttribArray(normalHandle);
GLES20.GlDisableVertexAttribArray(textureCoordHandle);
RenderUtils.CheckGLError("DrawMesh:disable attrib arrays");
}
/// <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.");
}
// Upload the YUV planes from |frame| to |textures|.
private void texImage2D(VideoRenderer.I420Frame frame, int[] textures)
{
for (int i = 0; i < 3; ++i)
{
ByteBuffer plane = frame.YuvPlanes[i];
GLES20.GlActiveTexture(GLES20.GlTexture0 + i);
GLES20.GlBindTexture(GLES20.GlTexture2d, textures[i]);
int w = i == 0 ? frame.Width : frame.Width / 2;
int h = i == 0 ? frame.Height : frame.Height / 2;
abortUnless(w == frame.YuvStrides[i], frame.YuvStrides[i] + "!=" + w);
GLES20.GlTexImage2D(GLES20.GlTexture2d, 0, GLES20.GlLuminance, w, h, 0, GLES20.GlLuminance, GLES20.GlUnsignedByte, plane);
}
checkNoGLES2Error();
}
// Draw |textures| using |vertices| (X,Y coordinates).
private void drawRectangle(int[] textures, FloatBuffer vertices)
{
for (int i = 0; i < 3; ++i)
{
GLES20.GlActiveTexture(GLES20.GlTexture0 + i);
GLES20.GlBindTexture(GLES20.GlTexture2d, textures[i]);
}
GLES20.GlVertexAttribPointer(posLocation, 2, GLES20.GlFloat, false, 0, vertices);
GLES20.GlEnableVertexAttribArray(posLocation);
GLES20.GlDrawArrays(GLES20.GlTriangleStrip, 0, 4);
checkNoGLES2Error();
}
/// <summary>
/// Draw a virtual object at a specific location on a specified plane.
/// This method is called when WorldRenderManager's OnDrawFrame.
/// </summary>
/// <param name="cameraView">The viewMatrix is a 4 * 4 matrix.</param>
/// <param name="cameraProjection">The ProjectionMatrix is a 4 * 4 matrix.</param>
/// <param name="lightIntensity">The lighting intensity.</param>
/// <param name="obj">The virtual object.</param>
public void OnDrawFrame(float[] cameraView, float[] cameraProjection, float lightIntensity, VirtualObject obj)
{
ShaderUtil.CheckGlError(TAG, "onDrawFrame start.");
mModelMatrixs = obj.GetModelAnchorMatrix();
Matrix.MultiplyMM(mModelViewMatrixs, 0, cameraView, 0, mModelMatrixs, 0);
Matrix.MultiplyMM(mModelViewProjectionMatrixs, 0, cameraProjection, 0, mModelViewMatrixs, 0);
GLES20.GlUseProgram(mGlProgram);
Matrix.MultiplyMV(mViewLightDirections, 0, mModelViewMatrixs, 0, LIGHT_DIRECTIONS, 0);
MatrixUtil.NormalizeVec3(mViewLightDirections);
// Light direction.
GLES20.GlUniform4f(mLightingParametersUniform,
mViewLightDirections[0], mViewLightDirections[1], mViewLightDirections[2], lightIntensity);
float[] objColors = obj.GetColor();
GLES20.GlUniform4fv(mColorUniform, 1, objColors, 0);
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextures[0]);
GLES20.GlUniform1i(mTextureUniform, 0);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, mVertexBufferId);
// The coordinate dimension of the read virtual object is 3.
GLES20.GlVertexAttribPointer(
mPositionAttribute, 3, GLES20.GlFloat, false, 0, 0);
// The dimension of the normal vector is 3.
GLES20.GlVertexAttribPointer(
mNormalAttribute, 3, GLES20.GlFloat, false, 0, mNormalsBaseAddress);
// The dimension of the texture coordinate is 2.
GLES20.GlVertexAttribPointer(
mTexCoordAttribute, 2, GLES20.GlFloat, false, 0, mTexCoordsBaseAddress);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
GLES20.GlUniformMatrix4fv(
mModelViewUniform, 1, false, mModelViewMatrixs, 0);
GLES20.GlUniformMatrix4fv(
mModelViewProjectionUniform, 1, false, mModelViewProjectionMatrixs, 0);
GLES20.GlEnableVertexAttribArray(mPositionAttribute);
GLES20.GlEnableVertexAttribArray(mNormalAttribute);
GLES20.GlEnableVertexAttribArray(mTexCoordAttribute);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, mIndexBufferId);
GLES20.GlDrawElements(GLES20.GlTriangles, mIndexCount, GLES20.GlUnsignedShort, 0);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, 0);
GLES20.GlDisableVertexAttribArray(mPositionAttribute);
GLES20.GlDisableVertexAttribArray(mNormalAttribute);
GLES20.GlDisableVertexAttribArray(mTexCoordAttribute);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
ShaderUtil.CheckGlError(TAG, "onDrawFrame end.");
}
public void OnDrawFrame(Javax.Microedition.Khronos.Opengles.IGL10 glUnused)
{
if (_updateSurface)
{
_surfaceTexture.UpdateTexImage();
_surfaceTexture.GetTransformMatrix(_STMatrix);
_updateSurface = false;
}
GLES20.GlUseProgram(0);
GLES20.GlUseProgram(_glProgram);
GLES20.GlActiveTexture(GLES20.GlTexture2);
var tWidth = _width;
var tHeight = _height;
funnyGhostEffectBuffer = ByteBuffer.AllocateDirect(tWidth * tHeight * 4);
funnyGhostEffectBuffer.Order(ByteOrder.NativeOrder());
funnyGhostEffectBuffer.Position(0);
// Note that it is read in GlReadPixels in a different pixel order than top-left to lower-right, so it adds a reversed+mirror effect
// when passed to TexImage2D to convert to texture.
GLES20.GlReadPixels(0, 0, tWidth - 1, tHeight - 1, GLES20.GlRgba, GLES20.GlUnsignedByte, funnyGhostEffectBuffer);
updateTargetTexture(tWidth, tHeight);
GLES20.GlBindTexture(GLES20.GlTexture2d, _otherTextureId);
GLES20.GlUniform1i(_otherTextureUniform, 2);
GLES20.GlUseProgram(0);
GLES20.GlUseProgram(_glProgram);
GLES20.GlActiveTexture(GLES20.GlTexture1);
GLES20.GlBindTexture(GLES11Ext.GlTextureExternalOes, _OESTextureId);
GLES20.GlUniform1i(_OESTextureUniform, 1);
_triangleVertices.Position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
GLES20.GlVertexAttribPointer(_aPositionHandle, 3, GLES20.GlFloat, false, TRIANGLE_VERTICES_DATA_STRIDE_BYTES, _triangleVertices);
GLES20.GlEnableVertexAttribArray(_aPositionHandle);
_textureVertices.Position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
GLES20.GlVertexAttribPointer(_aTextureCoord, 2, GLES20.GlFloat, false, TEXTURE_VERTICES_DATA_STRIDE_BYTES, _textureVertices);
GLES20.GlEnableVertexAttribArray(_aTextureCoord);
Android.Opengl.Matrix.SetIdentityM(_MVPMatrix, 0);
GLES20.GlUniformMatrix4fv(_uMVPMatrixHandle, 1, false, _MVPMatrix, 0);
GLES20.GlUniformMatrix4fv(_uSTMatrixHandle, 1, false, _STMatrix, 0);
GLES20.GlDrawArrays(GLES20.GlTriangleStrip, 0, 4);
GLES20.GlFinish();
}
/// <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 void DrawCube()
{
// This is not the floor!
GLES20.GlUniform1f(isFloorParam, 0f);
// Set the Model in the shader, used to calculate lighting
GLES20.GlUniformMatrix4fv(modelParam, 1, false, modelCube, 0);
// Set the ModelView in the shader, used to calculate lighting
GLES20.GlUniformMatrix4fv(modelViewParam, 1, false, modelView, 0);
// Set the position of the cube
GLES20.GlVertexAttribPointer(positionParam, CoordsPerVertex, GLES20.GlFloat,
false, 0, cubeVertices);
// Set the ModelViewProjection matrix in the shader.
GLES20.GlUniformMatrix4fv(modelViewProjectionParam, 1, false, modelViewProjection, 0);
// Set the normal positions of the cube, again for shading
GLES20.GlVertexAttribPointer(normalParam, 3, GLES20.GlFloat,
false, 0, cubeNormals);
// Set the texture coordinates
GLES20.GlVertexAttribPointer(texCoordParam, 2, GLES20.GlFloat, false, 0, cubeTextureCoords);
GLES20.GlActiveTexture(GLES20.GlTexture0);
if (IsLookingAtObject)
{
GLES20.GlVertexAttribPointer(colorParam, 4, GLES20.GlFloat, false,
0, cubeFoundColors);
GLES20.GlBindTexture(GLES20.GlTexture2d, monkeyFound);
}
else
{
GLES20.GlVertexAttribPointer(colorParam, 4, GLES20.GlFloat, false,
0, cubeColors);
GLES20.GlBindTexture(GLES20.GlTexture2d, monkeyNotFound);
}
GLES20.GlUniform1i(texture, 0);
GLES20.GlDrawArrays(GLES20.GlTriangles, 0, 36);
CheckGlError("Drawing cube");
}
/// <summary>
/// Create a shader program to read the data of the virtual object.
/// This method is called when WorldRenderManager's OnSurfaceCreated.
/// </summary>
/// <param name="context">Context.</param>
public void Init(Context context)
{
ShaderUtil.CheckGlError(TAG, "Init start.");
CreateProgram();
// Coordinate and index.
int[] buffers = new int[2];
GLES20.GlGenBuffers(2, buffers, 0);
mVertexBufferId = buffers[0];
mIndexBufferId = buffers[1];
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlGenTextures(mTextures.Length, mTextures, 0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextures[0]);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlLinearMipmapLinear);
InitGlTextureData(context);
InitializeGlObjectData(context);
ShaderUtil.CheckGlError(TAG, "Init end.");
}
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();
}
private void DrawSortedPlans(List <ARPlane> sortedPlanes, float[] cameraViews, float[] cameraProjection)
{
ShaderUtil.CheckGlError(TAG, "Draw sorted plans start.");
GLES20.GlDepthMask(false);
GLES20.GlEnable(GLES20.GlBlend);
GLES20.GlBlendFuncSeparate(
GLES20.GlDstAlpha, GLES20.GlOne, GLES20.GlZero, GLES20.GlOneMinusSrcAlpha);
GLES20.GlUseProgram(mProgram);
GLES20.GlEnableVertexAttribArray(glPositionParameter);
foreach (ARPlane plane in sortedPlanes)
{
float[] planeMatrix = new float[MATRIX_SIZE];
plane.CenterPose.ToMatrix(planeMatrix, 0);
Array.Copy(planeMatrix, modelMatrix, MATRIX_SIZE);
float scaleU = 1.0f / LABEL_WIDTH;
// Set the value of the plane angle uv matrix.
planeAngleUvMatrix[0] = scaleU;
planeAngleUvMatrix[1] = 0.0f;
planeAngleUvMatrix[2] = 0.0f;
float scaleV = 1.0f / LABEL_HEIGHT;
planeAngleUvMatrix[3] = scaleV;
int idx = plane.Label.Ordinal();
Log.Debug(TAG, "Plane getLabel:" + idx);
idx = Java.Lang.Math.Abs(idx);
GLES20.GlActiveTexture(GLES20.GlTexture0 + idx);
GLES20.GlBindTexture(GLES20.GlTexture2d, textures[idx]);
GLES20.GlUniform1i(glTexture, idx);
GLES20.GlUniformMatrix2fv(glPlaneUvMatrix, 1, false, planeAngleUvMatrix, 0);
DrawLabel(cameraViews, cameraProjection);
}
GLES20.GlDisableVertexAttribArray(glPositionParameter);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
GLES20.GlDisable(GLES20.GlBlend);
GLES20.GlDepthMask(true);
ShaderUtil.CheckGlError(TAG, "Draw sorted plans end.");
}
/**
* Draws the external texture in SurfaceTexture onto the current EGL surface.
*/
public void drawFrame(SurfaceTexture st, bool invert)
{
checkGlError("onDrawFrame start");
st.GetTransformMatrix(mSTMatrix);
if (invert)
{
mSTMatrix[5] = -mSTMatrix[5];
mSTMatrix[13] = 1.0f - mSTMatrix[13];
}
// (optional) clear to green so we can see if we're failing to set pixels
GLES20.GlClearColor(0.0f, 1.0f, 0.0f, 1.0f);
GLES20.GlClear(GLES20.GlColorBufferBit);
GLES20.GlUseProgram(mProgram);
checkGlError("glUseProgram");
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES11Ext.GlTextureExternalOes, mTextureID);
mTriangleVertices.Position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
GLES20.GlVertexAttribPointer(maPositionHandle, 3, GLES20.GlFloat, false,
TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
checkGlError("glVertexAttribPointer maPosition");
GLES20.GlEnableVertexAttribArray(maPositionHandle);
checkGlError("glEnableVertexAttribArray maPositionHandle");
mTriangleVertices.Position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
GLES20.GlVertexAttribPointer(maTextureHandle, 2, GLES20.GlFloat, false,
TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
checkGlError("glVertexAttribPointer maTextureHandle");
GLES20.GlEnableVertexAttribArray(maTextureHandle);
checkGlError("glEnableVertexAttribArray maTextureHandle");
Android.Opengl.Matrix.SetIdentityM(mMVPMatrix, 0);
GLES20.GlUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
GLES20.GlUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
GLES20.GlDrawArrays(GLES20.GlTriangleStrip, 0, 4);
checkGlError("glDrawArrays");
GLES20.GlBindTexture(GLES11Ext.GlTextureExternalOes, 0);
}
public void RenderTexture(int texId)
{
try
{
// Bind default FBO
GLES20.GlBindFramebuffer(GLES20.GlFramebuffer, 0);
// Use our shader program
GLES20.GlUseProgram(MProgram);
GlToolbox.CheckGlError("glUseProgram");
// Set viewport
GLES20.GlViewport(0, 0, MViewWidth, MViewHeight);
GlToolbox.CheckGlError("glViewport");
// Disable blending
GLES20.GlDisable(GLES20.GlBlend);
// Set the vertex attributes
GLES20.GlVertexAttribPointer(MTexCoordHandle, 2, GLES20.GlFloat, false, 0, MTexVertices);
GLES20.GlEnableVertexAttribArray(MTexCoordHandle);
GLES20.GlVertexAttribPointer(MPosCoordHandle, 2, GLES20.GlFloat, false, 0, MPosVertices);
GLES20.GlEnableVertexAttribArray(MPosCoordHandle);
GlToolbox.CheckGlError("vertex attribute setup");
// Set the input texture
GLES20.GlActiveTexture(GLES20.GlTexture0);
GlToolbox.CheckGlError("glActiveTexture");
GLES20.GlBindTexture(GLES20.GlTexture2d, texId);
GlToolbox.CheckGlError("glBindTexture");
GLES20.GlUniform1i(MTexSamplerHandle, 0);
// Draw
GLES20.GlClearColor(0.0f, 0.0f, 0.0f, 1.0f);
GLES20.GlClear(GLES20.GlColorBufferBit);
GLES20.GlDrawArrays(GLES20.GlTriangleStrip, 0, 4);
}
catch (Exception e)
{
Methods.DisplayReportResultTrack(e);
}
}
/// <summary>
/// Inform this View of the dimensions of frames coming from |stream|. </summary>
public virtual void setSize(Endpoint stream, int width, int height)
{
// Generate 3 texture ids for Y/U/V and place them into |textures|,
// allocating enough storage for |width|x|height| pixels.
int[] textures = yuvTextures[stream == Endpoint.LOCAL ? 0 : 1];
GLES20.GlGenTextures(3, textures, 0);
for (int i = 0; i < 3; ++i)
{
int w = i == 0 ? width : width / 2;
int h = i == 0 ? height : height / 2;
GLES20.GlActiveTexture(GLES20.GlTexture0 + i);
GLES20.GlBindTexture(GLES20.GlTexture2d, textures[i]);
GLES20.GlTexImage2D(GLES20.GlTexture2d, 0, GLES20.GlLuminance, w, h, 0, GLES20.GlLuminance, GLES20.GlUnsignedByte, null);
GLES20.GlTexParameterf(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlLinear);
GLES20.GlTexParameterf(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLES20.GlTexParameterf(GLES20.GlTexture2d, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameterf(GLES20.GlTexture2d, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
}
checkNoGLES2Error();
}
private void renderDistortionMesh(DistortionMesh mesh)
{
GLES20.GlBindBuffer(34962, mesh.mArrayBufferId);
/*mesh.getClass(); mesh.getClass();*/ GLES20.GlVertexAttribPointer(mProgramHolder.aPosition, 3, 5126, false, 20, 0 * 4);
GLES20.GlEnableVertexAttribArray(mProgramHolder.aPosition);
/*mesh.getClass(); mesh.getClass();*/ GLES20.GlVertexAttribPointer(mProgramHolder.aVignette, 1, 5126, false, 20, 2 * 4);
GLES20.GlEnableVertexAttribArray(mProgramHolder.aVignette);
/*mesh.getClass(); mesh.getClass();*/ GLES20.GlVertexAttribPointer(mProgramHolder.aTextureCoord, 2, 5126, false, 20, 3 * 4);
GLES20.GlEnableVertexAttribArray(mProgramHolder.aTextureCoord);
GLES20.GlActiveTexture(33984);
GLES20.GlBindTexture(3553, mTextureId);
GLES20.GlUniform1i(mProgramHolder.uTextureSampler, 0);
GLES20.GlUniform1f(mProgramHolder.uTextureCoordScale, mResolutionScale);
GLES20.GlBindBuffer(34963, mesh.mElementBufferId);
GLES20.GlDrawElements(5, mesh.nIndices, 5125, 0);
}
public void drawFrame() {
checkGlError("onDrawFrame start");
mSurfaceTexture.GetTransformMatrix(mSTMatrix);
//GLES20.glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
//GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
GLES20.GlUseProgram(mProgram);
checkGlError("glUseProgram");
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES11Ext.GlTextureExternalOes, 0);
GLES20.GlBindTexture(GLES11Ext.GlTextureExternalOes, mTextureID);
mTriangleVertices.Position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
GLES20.GlVertexAttribPointer(maPositionHandle, 3, GLES20.GlFloat, false,
TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
checkGlError("glVertexAttribPointer maPosition");
GLES20.GlEnableVertexAttribArray(maPositionHandle);
checkGlError("glEnableVertexAttribArray maPositionHandle");
mTriangleVertices.Position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
GLES20.GlVertexAttribPointer(maTextureHandle, 2, GLES20.GlFloat, false,
TRIANGLE_VERTICES_DATA_STRIDE_BYTES, mTriangleVertices);
checkGlError("glVertexAttribPointer maTextureHandle");
GLES20.GlEnableVertexAttribArray(maTextureHandle);
checkGlError("glEnableVertexAttribArray maTextureHandle");
Android.Opengl.Matrix.SetIdentityM(mMVPMatrix, 0);
GLES20.GlUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
GLES20.GlUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
GLES20.GlDrawArrays(GLES20.GlTriangleStrip, 0, 4);
checkGlError("glDrawArrays");
GLES20.GlFinish();
}
/**
* Draws the collection of tracked planes, with closer planes hiding more distant ones.
*
* @param allPlanes The collection of planes to draw.
* @param cameraPose The pose of the camera, as returned by {@link Frame#getPose()}
* @param cameraPerspective The projection matrix, as returned by
* {@link Session#getProjectionMatrix(float[], int, float, float)}
*/
public void DrawPlanes(IEnumerable <Plane> allPlanes, Pose cameraPose, float[] cameraPerspective)
{
// Planes must be sorted by distance from camera so that we draw closer planes first, and
// they occlude the farther planes.
List <SortablePlane> sortedPlanes = new List <SortablePlane>();
float[] normal = new float[3];
float cameraX = cameraPose.Tx();
float cameraY = cameraPose.Ty();
float cameraZ = cameraPose.Tz();
foreach (var plane in allPlanes)
{
if (plane.GetType() != Plane.Type.HorizontalUpwardFacing ||
plane.GetTrackingState() != Plane.TrackingState.Tracking)
{
continue;
}
var center = plane.CenterPose;
// Get transformed Y axis of plane's coordinate system.
center.GetTransformedAxis(1, 1.0f, normal, 0);
// Compute dot product of plane's normal with vector from camera to plane center.
float distance = (cameraX - center.Tx()) * normal[0] +
(cameraY - center.Ty()) * normal[1] + (cameraZ - center.Tz()) * normal[2];
if (distance < 0)
{ // Plane is back-facing.
continue;
}
sortedPlanes.Add(new SortablePlane(distance, plane));
}
sortedPlanes.Sort((x, y) => x.Distance.CompareTo(y.Distance));
var cameraView = new float[16];
cameraPose.Inverse().ToMatrix(cameraView, 0);
// Planes are drawn with additive blending, masked by the alpha channel for occlusion.
// Start by clearing the alpha channel of the color buffer to 1.0.
GLES20.GlClearColor(1, 1, 1, 1);
GLES20.GlColorMask(false, false, false, true);
GLES20.GlClear(GLES20.GlColorBufferBit);
GLES20.GlColorMask(true, true, true, true);
// Disable depth write.
GLES20.GlDepthMask(false);
// Additive blending, masked by alpha chanel, clearing alpha channel.
GLES20.GlEnable(GLES20.GlBlend);
GLES20.GlBlendFuncSeparate(
GLES20.GlDstAlpha, GLES20.GlOne, // RGB (src, dest)
GLES20.GlZero, GLES20.GlOneMinusSrcAlpha); // ALPHA (src, dest)
// Set up the shader.
GLES20.GlUseProgram(mPlaneProgram);
// Attach the texture.
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextures[0]);
GLES20.GlUniform1i(mTextureUniform, 0);
// Shared fragment uniforms.
GLES20.GlUniform4fv(mGridControlUniform, 1, GRID_CONTROL, 0);
// Enable vertex arrays
GLES20.GlEnableVertexAttribArray(mPlaneXZPositionAlphaAttribute);
ShaderUtil.CheckGLError(TAG, "Setting up to draw planes");
foreach (var sortedPlane in sortedPlanes)
{
var plane = sortedPlane.Plane;
float[] planeMatrix = new float[16];
plane.CenterPose.ToMatrix(planeMatrix, 0);
updatePlaneParameters(planeMatrix, plane.ExtentX,
plane.ExtentZ, plane.PlanePolygon);
// Get plane index. Keep a map to assign same indices to same planes.
int planeIndex = -1;
if (!mPlaneIndexMap.TryGetValue(plane, out planeIndex))
{
planeIndex = Java.Lang.Integer.ValueOf(mPlaneIndexMap.Count).IntValue();
mPlaneIndexMap.Add(plane, planeIndex);
}
// Set plane color. Computed deterministically from the Plane index.
int colorIndex = planeIndex % PLANE_COLORS_RGBA.Length;
colorRgbaToFloat(mPlaneColor, PLANE_COLORS_RGBA[colorIndex]);
GLES20.GlUniform4fv(mLineColorUniform, 1, mPlaneColor, 0);
GLES20.GlUniform4fv(mDotColorUniform, 1, mPlaneColor, 0);
// Each plane will have its own angle offset from others, to make them easier to
// distinguish. Compute a 2x2 rotation matrix from the angle.
float angleRadians = planeIndex * 0.144f;
float uScale = DOTS_PER_METER;
float vScale = DOTS_PER_METER * EQUILATERAL_TRIANGLE_SCALE;
mPlaneAngleUvMatrix[0] = +(float)Math.Cos(angleRadians) * uScale;
mPlaneAngleUvMatrix[1] = -(float)Math.Sin(angleRadians) * uScale;
mPlaneAngleUvMatrix[2] = +(float)Math.Sin(angleRadians) * vScale;
mPlaneAngleUvMatrix[3] = +(float)Math.Cos(angleRadians) * vScale;
GLES20.GlUniformMatrix2fv(mPlaneUvMatrixUniform, 1, false, mPlaneAngleUvMatrix, 0);
Draw(cameraView, cameraPerspective);
}
// Clean up the state we set
GLES20.GlDisableVertexAttribArray(mPlaneXZPositionAlphaAttribute);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
GLES20.GlDisable(GLES20.GlBlend);
GLES20.GlDepthMask(true);
ShaderUtil.CheckGLError(TAG, "Cleaning up after drawing planes");
}
public static void Activate(int index)
{
GLES20.GlActiveTexture(GLES20.GlTexture0 + index);
}
/// <summary>
/// This method is called from Renderer when OpenGL ready to draw scene
/// The code of this method show "standard" OpenGL object drawing routine with using transformation matrix
/// </summary>
/// <param name="gl">IGL10 access object pointer from orign OpenGL.OnDraw(IGL10 gl)</param>
/// <param name="mViewMatrix">Camere View matrix</param>
/// <param name="mProjectionMatrix">Camera Projection matrix</param>
public virtual void DrawFrame()
{
float[] mModelMatrix = new float[16];
Matrix.SetIdentityM(mModelMatrix, 0);
Matrix.ScaleM(mModelMatrix, 0, scale, scale, scale);
Matrix.RotateM(mModelMatrix, 0, angleX, 1, ay, az);
Matrix.RotateM(mModelMatrix, 0, angleY, ax, 1, az);
Matrix.TranslateM(mModelMatrix, 0, x, y, z);
// Tell OpenGL to use this program when rendering.
GLES20.GlUseProgram(shader.programHandle);
//Draw with VBO
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, vertexVBO.handle);
GLES20.GlEnableVertexAttribArray(shader.mPositionHandle);
GLES20.GlVertexAttribPointer(shader.mPositionHandle, mPositionDataSize, GLES20.GlFloat, false, 0, 0);
if (textureVBO.handle != -1)
{
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, textureVBO.handle);
GLES20.GlEnableVertexAttribArray(shader.mTextureCoordHandle);
GLES20.GlVertexAttribPointer(shader.mTextureCoordHandle, 2, GLES20.GlFloat, false, 0, 0);
}
if (normalVBO.handle != -1)
{
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, normalVBO.handle);
GLES20.GlEnableVertexAttribArray(shader.mNormalHandle);
GLES20.GlVertexAttribPointer(shader.mNormalHandle, 3, GLES20.GlFloat, false, 0, 0);
}
if (texture.handle != -1)
{
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, texture.handle);
GLES20.GlUniform1i(shader.mTextureHandle, 0);
}
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
//END OF Draw with VBO
//light position
GLES20.GlUniform4f(shader.mLightPos, lx, ly, lz, lw);
// This multiplies the view matrix by the model matrix, and stores the result in the MVP matrix
// (which currently contains model * view).
// Allocate storage for the final combined matrix. This will be passed into the shader program.
float[] mMVPMatrix = new float[16];
Matrix.MultiplyMM(mMVPMatrix, 0, renderer.camera.mViewMatrix, 0, mModelMatrix, 0);
// This multiplies the modelview matrix by the projection matrix, and stores the result in the MVP matrix
// (which now contains model * view * projection).
// THIS IS NOT WORK AT C# Matrix class -> Matrix.MultiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
float[] _mMVPMatrix = new float[16];
Matrix.MultiplyMM(_mMVPMatrix, 0, renderer.camera.mProjectionMatrix, 0, mMVPMatrix, 0);
GLES20.GlUniformMatrix4fv(shader.mMVPMatrixHandle, 1, false, _mMVPMatrix, 0);
GLES20.GlDrawArrays(GLES20.GlTriangles, 0, vertexVBO.objectSize); //Cube has 12 triagle faces each face has 3 coord
GLES20.GlUseProgram(0);
}
/**
* \brief Draw the video icon (in OpenGL).
* @param mvpMatrix the model-view-projection matrix.
* @param status the video state.
*/
private void DrawIcon(float[] mvpMatrix, PikkartVideoPlayer.VideoSate.VIDEO_STATE status)
{
GLES20.GlEnable(GLES20.GlBlend);
GLES20.GlBlendFunc(GLES20.GlSrcAlpha, GLES20.GlOneMinusSrcAlpha);
GLES20.GlUseProgram(mKeyframe_Program_GL_ID);
int vertexHandle = GLES20.GlGetAttribLocation(mKeyframe_Program_GL_ID, "vertexPosition");
int textureCoordHandle = GLES20.GlGetAttribLocation(mKeyframe_Program_GL_ID, "vertexTexCoord");
int mvpMatrixHandle = GLES20.GlGetUniformLocation(mKeyframe_Program_GL_ID, "modelViewProjectionMatrix");
int texSampler2DHandle = GLES20.GlGetUniformLocation(mKeyframe_Program_GL_ID, "texSampler2D");
GLES20.GlVertexAttribPointer(vertexHandle, 3, GLES20.GlFloat, false, 0, mVertices_Buffer);
GLES20.GlVertexAttribPointer(textureCoordHandle, 2, GLES20.GlFloat, false, 0, mTexCoords_Buffer);
GLES20.GlEnableVertexAttribArray(vertexHandle);
GLES20.GlEnableVertexAttribArray(textureCoordHandle);
GLES20.GlActiveTexture(GLES20.GlTexture0);
switch ((int)status)
{
case 0: //end
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconPlayTexture_GL_ID);
break;
case 1: //pasued
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconPlayTexture_GL_ID);
break;
case 2: //stopped
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconPlayTexture_GL_ID);
break;
case 3: //playing
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconPlayTexture_GL_ID);
break;
case 4: //ready
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconPlayTexture_GL_ID);
break;
case 5: //not ready
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconBusyTexture_GL_ID);
break;
case 6: //buffering
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconBusyTexture_GL_ID);
break;
case 7: //error
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconErrorTexture_GL_ID);
break;
default:
GLES20.GlBindTexture(GLES20.GlTexture2d, mIconBusyTexture_GL_ID);
break;
}
GLES20.GlUniform1i(texSampler2DHandle, 0);
GLES20.GlUniformMatrix4fv(mvpMatrixHandle, 1, false, mvpMatrix, 0);
GLES20.GlDrawElements(GLES20.GlTriangles, mIndices_Number, GLES20.GlUnsignedShort, mIndex_Buffer);
GLES20.GlDisableVertexAttribArray(vertexHandle);
GLES20.GlDisableVertexAttribArray(textureCoordHandle);
GLES20.GlUseProgram(0);
GLES20.GlDisable(GLES20.GlBlend);
}
private void drawOneMaterial(GLSL glsl, ShellSurface surface, RenderList mat)
{
// set motion
if (surface.Animation)
{
if (mat.bone_inv_map == null)
{
for (int j = 0; j < surface.RenderBones.Count; j++)
{
var b = surface.RenderBones[j];
if (b != null)
{
Array.Copy(b.matrix, 0, mBoneMatrix, j * 16, 16);
}
}
}
else
{
for (int j = 0; j < mat.bone_inv_map.Length; j++)
{
int inv = mat.bone_inv_map[j];
if (inv >= 0)
{
var b = surface.RenderBones[inv];
Array.Copy(b.matrix, 0, mBoneMatrix, j * 16, 16);
}
}
}
GLES20.GlUniformMatrix4fv(glsl.muMBone, mat.bone_num, false, mBoneMatrix, 0);
GLES20.GlEnableVertexAttribArray(glsl.maBlendHandle);
GLES20.GlVertexAttribPointer(glsl.maBlendHandle, 3, GLES20.GlUnsignedByte, false, 0, mat.weight);
}
// initialize color
for (int i = 0; i < mDifAmb.Count(); i++)
{
mDifAmb[i] = 1.0f;
}
// diffusion and ambient
float wi = 0.6f; // light color = (0.6, 0.6, 0.6)
for (int i = 0; i < 3; i++)
{
mDifAmb[i] *= mat.material.diffuse_color[i] * wi + mat.material.emmisive_color[i];
}
mDifAmb[3] *= mat.material.diffuse_color[3];
Vector.min(mDifAmb, 1.0f);
GLES20.GlUniform4fv(glsl.muDif, 1, mDifAmb, 0);
// speculation
if (glsl.muPow >= 0)
{
GLES20.GlUniform4f(glsl.muSpec, mat.material.specular_color[0], mat.material.specular_color[1], mat.material.specular_color[2], 0);
GLES20.GlUniform1f(glsl.muPow, mat.material.power);
}
// toon
GLES20.GlUniform1i(glsl.msToonSampler, 0);
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, TextureFile.FetchTexInfo(surface.toon_name[mat.material.toon_index]).tex);
// texture
GLES20.GlUniform1i(glsl.msTextureSampler, 1);
GLES20.GlActiveTexture(GLES20.GlTexture1);
if (mat.material.texture != null)
{
TexInfo tb = TextureFile.FetchTexInfo(mat.material.texture);
if (tb != null)
{
GLES20.GlBindTexture(GLES20.GlTexture2d, tb.tex);
}
else // avoid crash
{
GLES20.GlBindTexture(GLES20.GlTexture2d, TextureFile.FetchTexInfo(surface.toon_name[0]).tex); // white texture using toon0.bmp
for (int i = 0; i < 3; i++) // for emulate premultiplied alpha
{
mDifAmb[i] *= mat.material.diffuse_color[3];
}
}
}
else
{
GLES20.GlBindTexture(GLES20.GlTexture2d, TextureFile.FetchTexInfo(surface.toon_name[0]).tex); // white texture using toon0.bmp
for (int i = 0; i < 3; i++) // for emulate premultiplied alpha
{
mDifAmb[i] *= mat.material.diffuse_color[3];
}
}
// sphere(sph)
GLES20.GlUniform1i(glsl.msSphSampler, 2);
GLES20.GlActiveTexture(GLES20.GlTexture2);
if (mat.material.sph != null)
{
TexInfo tb = TextureFile.FetchTexInfo(mat.material.sph);
if (tb != null)
{
GLES20.GlBindTexture(GLES20.GlTexture2d, tb.tex);
}
else // avoid crash
{
GLES20.GlBindTexture(GLES20.GlTexture2d, TextureFile.FetchTexInfo(surface.toon_name [0]).tex); // white texture using toon0.bmp
}
}
else
{
GLES20.GlBindTexture(GLES20.GlTexture2d, TextureFile.FetchTexInfo(surface.toon_name[0]).tex); // white texture using toon0.bmp
}
// sphere(spa)
GLES20.GlUniform1i(glsl.msSpaSampler, 3);
GLES20.GlActiveTexture(GLES20.GlTexture3);
if (mat.material.spa != null)
{
TexInfo tb = TextureFile.FetchTexInfo(mat.material.spa);
if (tb != null)
{
GLES20.GlBindTexture(GLES20.GlTexture2d, tb.tex);
}
}
// draw
surface.IndexBuffer.Position(mat.face_vert_offset);
GLES20.GlDrawElements(GLES20.GlTriangles, mat.face_vert_count, GLES20.GlUnsignedShort, surface.IndexBuffer);
checkGlError("glDrawElements");
}
/**
* Draws the model.
*
* @param cameraView A 4x4 view matrix, in column-major order.
* @param cameraPerspective A 4x4 projection matrix, in column-major order.
* @param lightIntensity Illumination intensity. Combined with diffuse and specular material
* properties.
* @see #setBlendMode(BlendMode)
* @see #updateModelMatrix(float[], float)
* @see #setMaterialProperties(float, float, float, float)
* @see android.opengl.Matrix
*/
public void Draw(float[] cameraView, float[] cameraPerspective, float lightIntensity)
{
ShaderUtil.CheckGLError(TAG, "Before draw");
// Build the ModelView and ModelViewProjection matrices
// for calculating object position and light.
Android.Opengl.Matrix.MultiplyMM(mModelViewMatrix, 0, cameraView, 0, mModelMatrix, 0);
Android.Opengl.Matrix.MultiplyMM(mModelViewProjectionMatrix, 0, cameraPerspective, 0, mModelViewMatrix, 0);
GLES20.GlUseProgram(mProgram);
// Set the lighting environment properties.
Android.Opengl.Matrix.MultiplyMV(mViewLightDirection, 0, mModelViewMatrix, 0, LIGHT_DIRECTION, 0);
normalizeVec3(mViewLightDirection);
GLES20.GlUniform4f(mLightingParametersUniform,
mViewLightDirection[0], mViewLightDirection[1], mViewLightDirection[2], lightIntensity);
// Set the object material properties.
GLES20.GlUniform4f(mMaterialParametersUniform, mAmbient, mDiffuse, mSpecular,
mSpecularPower);
// Attach the object texture.
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES20.GlTexture2d, mTextures[0]);
GLES20.GlUniform1i(mTextureUniform, 0);
// Set the vertex attributes.
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, mVertexBufferId);
GLES20.GlVertexAttribPointer(
mPositionAttribute, COORDS_PER_VERTEX, GLES20.GlFloat, false, 0, mVerticesBaseAddress);
GLES20.GlVertexAttribPointer(
mNormalAttribute, 3, GLES20.GlFloat, false, 0, mNormalsBaseAddress);
GLES20.GlVertexAttribPointer(
mTexCoordAttribute, 2, GLES20.GlFloat, false, 0, mTexCoordsBaseAddress);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
// Set the ModelViewProjection matrix in the shader.
GLES20.GlUniformMatrix4fv(
mModelViewUniform, 1, false, mModelViewMatrix, 0);
GLES20.GlUniformMatrix4fv(
mModelViewProjectionUniform, 1, false, mModelViewProjectionMatrix, 0);
// Enable vertex arrays
GLES20.GlEnableVertexAttribArray(mPositionAttribute);
GLES20.GlEnableVertexAttribArray(mNormalAttribute);
GLES20.GlEnableVertexAttribArray(mTexCoordAttribute);
if (mBlendMode != BlendMode.Null)
{
GLES20.GlDepthMask(false);
GLES20.GlEnable(GLES20.GlBlend);
switch (mBlendMode)
{
case BlendMode.Shadow:
// Multiplicative blending function for Shadow.
GLES20.GlBlendFunc(GLES20.GlZero, GLES20.GlOneMinusSrcAlpha);
break;
case BlendMode.Grid:
// Grid, additive blending function.
GLES20.GlBlendFunc(GLES20.GlSrcAlpha, GLES20.GlOneMinusSrcAlpha);
break;
}
}
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, mIndexBufferId);
GLES20.GlDrawElements(GLES20.GlTriangles, mIndexCount, GLES20.GlUnsignedShort, 0);
GLES20.GlBindBuffer(GLES20.GlElementArrayBuffer, 0);
if (mBlendMode != BlendMode.Null)
{
GLES20.GlDisable(GLES20.GlBlend);
GLES20.GlDepthMask(true);
}
// Disable vertex arrays
GLES20.GlDisableVertexAttribArray(mPositionAttribute);
GLES20.GlDisableVertexAttribArray(mNormalAttribute);
GLES20.GlDisableVertexAttribArray(mTexCoordAttribute);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
ShaderUtil.CheckGLError(TAG, "After draw");
}
public void OnDrawFrame(IGL10 unused)
{
// Clear view.
GLES20.GlClearColor(0.5f, 0.5f, 0.5f, 1.0f);
GLES20.GlClear(GLES20.GlColorBufferBit);
// If we have new preview texture.
if (_surfaceTextureUpdate)
{
// Update surface texture.
_surfaceTexture.UpdateTexImage();
// Update texture transform matrix.
_surfaceTexture.GetTransformMatrix(_transformM);
_surfaceTextureUpdate = false;
// Bind offscreen texture into use.
_fboOffscreen.Bind();
_fboOffscreen.BindTexture(0);
// Take copy shader into use.
_shaderCopyOes.UseProgram();
// Uniform variables.
var uOrientationM = _shaderCopyOes.GetHandle("uOrientationM");
var uTransformM = _shaderCopyOes.GetHandle("uTransformM");
// We're about to transform external texture here already.
GLES20.GlUniformMatrix4fv(uOrientationM, 1, false,
_sharedData._orientationM, 0);
GLES20.GlUniformMatrix4fv(uTransformM, 1, false, _transformM, 0);
// We're using external OES texture as source.
GLES20.GlActiveTexture(GLES20.GlTexture0);
//GLES20.GlBindTexture(GLES20.GlTexture2d, mFboExternal.getTexture(0));
// Trigger actual rendering.
renderQuad(_shaderCopyOes.GetHandle("aPosition"));
}
else
{
System.Diagnostics.Debug.WriteLine("OK");
}
// Bind screen buffer into use.
GLES20.GlBindFramebuffer(GLES20.GlFramebuffer, 0);
GLES20.GlViewport(0, 0, _width, _height);
// Take filter shader into use.
_shaderFilterDefault.UseProgram();
// Uniform variables.
var uBrightness = _shaderFilterDefault.GetHandle("uBrightness");
var uContrast = _shaderFilterDefault.GetHandle("uContrast");
var uSaturation = _shaderFilterDefault.GetHandle("uSaturation");
var uCornerRadius = _shaderFilterDefault.GetHandle("uCornerRadius");
var uAspectRatio = _shaderFilterDefault.GetHandle("uAspectRatio");
var uAspectRatioPreview = _shaderFilterDefault.GetHandle("uAspectRatioPreview");
// Store uniform variables into use.
GLES20.GlUniform1f(uBrightness, _sharedData._brightness);
GLES20.GlUniform1f(uContrast, _sharedData._contrast);
GLES20.GlUniform1f(uSaturation, _sharedData._saturation);
GLES20.GlUniform1f(uCornerRadius, _sharedData._cornerRadius);
GLES20.GlUniform2fv(uAspectRatio, 1, _aspectRatio, 0);
GLES20.GlUniform2fv(uAspectRatioPreview, 1,
_sharedData._aspectRatioPreview, 0);
// Use offscreen texture as source.
GLES20.GlActiveTexture(GLES20.GlTexture1);
GLES20.GlBindTexture(GLES20.GlTexture2d, _fboOffscreen.GetTexture(0));
// Trigger actual rendering.
renderQuad(_shaderCopyOes.GetHandle("aPosition"));
}
/**
* 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 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);
}