/**
* \brief Draw the video keyframe (in OpenGL).
* @param mvpMatrix the model-view-projection matrix.
*/
private void DrawKeyFrame(float[] mvpMatrix)
{
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);
GLES20.GlBindTexture(GLES20.GlTexture2d, mKeyframeTexture_GL_ID);
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);
}
/**
* \brief Draw the video (in OpenGL).
* @param mvpMatrix the model-view-projection matrix.
*/
private void DrawVideo(float[] mvpMatrix)
{
GLES20.GlUseProgram(mVideo_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, "texSamplerOES");
GLES20.GlVertexAttribPointer(vertexHandle, 3, GLES20.GlFloat, false, 0, mVertices_Buffer);
GLES20.GlVertexAttribPointer(textureCoordHandle, 2, GLES20.GlFloat, false, 0, mVideoTexCoords_Buffer);
GLES20.GlEnableVertexAttribArray(vertexHandle);
GLES20.GlEnableVertexAttribArray(textureCoordHandle);
GLES20.GlActiveTexture(GLES20.GlTexture0);
GLES20.GlBindTexture(GLES11Ext.GlTextureExternalOes, mVideoTexture_GL_ID);
GLES20.GlUniform1i(texSampler2DHandle, 0);
GLES20.GlUniformMatrix4fv(mvpMatrixHandle, 1, false, mvpMatrix, 0);
// Render
GLES20.GlDrawElements(GLES20.GlTriangles, mIndices_Number, GLES20.GlUnsignedShort, mIndex_Buffer);
GLES20.GlDisableVertexAttribArray(vertexHandle);
GLES20.GlDisableVertexAttribArray(textureCoordHandle);
GLES20.GlUseProgram(0);
}
/**
* Allocates and initializes OpenGL resources needed by the background renderer. Must be
* called on the OpenGL thread, typically in
* {@link GLSurfaceView.Renderer#onSurfaceCreated(GL10, EGLConfig)}.
*
* @param context Needed to access shader source.
*/
public void CreateOnGlThread(Context context)
{
// Generate the background texture.
var textures = new int[1];
//GLES20 = OpenGL ES 2.0
//Gibt eine bestimmte Anzahl an freien Texturnamen zurück.
GLES20.GlGenTextures(1, textures, 0);
TextureId = textures[0];
GLES20.GlBindTexture(mTextureTarget, TextureId);
GLES20.GlTexParameteri(mTextureTarget, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(mTextureTarget, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(mTextureTarget, GLES20.GlTextureMinFilter, GLES20.GlNearest);
GLES20.GlTexParameteri(mTextureTarget, GLES20.GlTextureMagFilter, GLES20.GlNearest);
int numVertices = 4;
if (numVertices != QUAD_COORDS.Length / COORDS_PER_VERTEX)
{
throw new Exception("Unexpected number of vertices in BackgroundRenderer.");
}
var bbVertices = ByteBuffer.AllocateDirect(QUAD_COORDS.Length * FLOAT_SIZE);
bbVertices.Order(ByteOrder.NativeOrder());
mQuadVertices = bbVertices.AsFloatBuffer();
mQuadVertices.Put(QUAD_COORDS);
mQuadVertices.Position(0);
var bbTexCoords = ByteBuffer.AllocateDirect(numVertices * TEXCOORDS_PER_VERTEX * FLOAT_SIZE);
bbTexCoords.Order(ByteOrder.NativeOrder());
mQuadTexCoord = bbTexCoords.AsFloatBuffer();
mQuadTexCoord.Put(QUAD_TEXCOORDS);
mQuadTexCoord.Position(0);
var bbTexCoordsTransformed = ByteBuffer.AllocateDirect(numVertices * TEXCOORDS_PER_VERTEX * FLOAT_SIZE);
bbTexCoordsTransformed.Order(ByteOrder.NativeOrder());
mQuadTexCoordTransformed = bbTexCoordsTransformed.AsFloatBuffer();
int vertexShader = ShaderUtil.LoadGLShader(TAG, context,
GLES20.GlVertexShader, Resource.Raw.screenquad_vertex);
int fragmentShader = ShaderUtil.LoadGLShader(TAG, context,
GLES20.GlFragmentShader, Resource.Raw.screenquad_fragment_oes);
mQuadProgram = GLES20.GlCreateProgram();
GLES20.GlAttachShader(mQuadProgram, vertexShader);
GLES20.GlAttachShader(mQuadProgram, fragmentShader);
GLES20.GlLinkProgram(mQuadProgram);
GLES20.GlUseProgram(mQuadProgram);
ShaderUtil.CheckGLError(TAG, "Program creation");
mQuadPositionParam = GLES20.GlGetAttribLocation(mQuadProgram, "a_Position");
mQuadTexCoordParam = GLES20.GlGetAttribLocation(mQuadProgram, "a_TexCoord");
ShaderUtil.CheckGLError(TAG, "Program parameters");
}
public void Draw(float[] eyeView, float[] perspective)
{
GLES20.GlClear(GLES20.GlColorBufferBit | GLES20.GlDepthBufferBit);
positionParam = GLES20.GlGetAttribLocation(glProgram, "a_Position");
normalParam = GLES20.GlGetAttribLocation(glProgram, "a_Normal");
colorParam = GLES20.GlGetAttribLocation(glProgram, "a_Color");
texCoordParam = GLES20.GlGetAttribLocation(glProgram, "a_texcoord");
GLES20.GlEnableVertexAttribArray(positionParam);
GLES20.GlEnableVertexAttribArray(normalParam);
GLES20.GlEnableVertexAttribArray(texCoordParam);
// Apply the eye transformation to the camera.
Matrix.MultiplyMM(view, 0, eyeView, 0, camera, 0);
// Set the position of the light
Matrix.MultiplyMV(lightPosInEyeSpace, 0, view, 0, lightPosInWorldSpace, 0);
GLES20.GlUniform3f(lightPosParam, lightPosInEyeSpace[0], lightPosInEyeSpace[1],
lightPosInEyeSpace[2]);
// Build the ModelView and ModelViewProjection matrices
// for calculating cube position and light.
Matrix.MultiplyMM(modelView, 0, view, 0, modelCube, 0);
Matrix.MultiplyMM(modelViewProjection, 0, perspective, 0, modelView, 0);
DrawCube();
// Set mModelView for the floor, so we draw floor in the correct location
Matrix.MultiplyMM(modelView, 0, view, 0, modelFloor, 0);
Matrix.MultiplyMM(modelViewProjection, 0, perspective, 0,
modelView, 0);
DrawFloor(perspective);
}
/**
* Get id for given handle name. This method checks for both attribute and
* uniform handles.
*
* @param name
* Name of handle.
* @return Id for given handle or -1 if none found.
*/
public int GetHandle(string name)
{
if (mShaderHandleMap.ContainsKey(name))
{
return(mShaderHandleMap [name]);
}
var handle = GLES20.GlGetAttribLocation(_program, name);
if (handle == -1)
{
handle = GLES20.GlGetUniformLocation(_program, name);
}
if (handle == -1)
{
// One should never leave log messages but am not going to follow
// this rule. This line comes handy if you see repeating 'not found'
// messages on LogCat - usually for typos otherwise annoying to
// spot from shader code.
Log.Debug("GlslShader", "Could not get attrib location for " + name);
}
else
{
mShaderHandleMap.Add(name, handle);
}
return(handle);
}
public void OnSurfaceCreated(IGL10 unused, EGLConfig config)
{
int program = GLES20.GlCreateProgram();
addShaderTo(GLES20.GlVertexShader, VERTEX_SHADER_STRING, program);
addShaderTo(GLES20.GlFragmentShader, FRAGMENT_SHADER_STRING, program);
GLES20.GlLinkProgram(program);
int[] result = new int[] { GLES20.GlFalse };
result[0] = GLES20.GlFalse;
GLES20.GlGetProgramiv(program, GLES20.GlLinkStatus, result, 0);
abortUnless(result[0] == GLES20.GlTrue, GLES20.GlGetProgramInfoLog(program));
GLES20.GlUseProgram(program);
GLES20.GlUniform1i(GLES20.GlGetUniformLocation(program, "y_tex"), 0);
GLES20.GlUniform1i(GLES20.GlGetUniformLocation(program, "u_tex"), 1);
GLES20.GlUniform1i(GLES20.GlGetUniformLocation(program, "v_tex"), 2);
// Actually set in drawRectangle(), but queried only once here.
posLocation = GLES20.GlGetAttribLocation(program, "in_pos");
int tcLocation = GLES20.GlGetAttribLocation(program, "in_tc");
GLES20.GlEnableVertexAttribArray(tcLocation);
GLES20.GlVertexAttribPointer(tcLocation, 2, GLES20.GlFloat, false, 0, textureCoords);
GLES20.GlClearColor(0.0f, 0.0f, 0.0f, 1.0f);
checkNoGLES2Error();
}
public void Draw()
{
// Add program to OpenGL environment
GLES20.GlUseProgram(mProgram);
// get handle to vertex shader's vPosition member
mPositionHandle = GLES20.GlGetAttribLocation(mProgram, "vPosition");
// Enable a handle to the triangle vertices
GLES20.GlEnableVertexAttribArray(mPositionHandle);
// Prepare the triangle coordinate data
GLES20.GlVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX,
GLES20.GL_FLOAT, false,
vertexStride, vertexBuffer);
// get handle to fragment shader's vColor member
mColorHandle = GLES20.GlGetUniformLocation(mProgram, "vColor");
// Set color for drawing the triangle
GLES20.GlUniform4fv(mColorHandle, 1, color, 0);
// Draw the triangle
GLES20.GlDrawArrays(GLES20.GL_TRIANGLES, 0, vertexCount);
// Disable vertex array
GLES20.GlDisableVertexAttribArray(mPositionHandle);
}
public ShaderCompiller(Context context, String shaderName, String fileName)
{
this.context = context;
this.shaderName = shaderName;
this.fileName = fileName;
shaderSource = loadSource(fileName + "_shader");
fragmentSource = loadSource(fileName + "_fragment");
compileShader();
mMVMatrixHandle = GLES20.GlGetUniformLocation(program, "u_MVMatrix");
mMVPMatrixHandle = GLES20.GlGetUniformLocation(program, "u_MVPMatrix");
attrib_vertex = GLES20.GlGetAttribLocation(program, "coord");
normal = GLES20.GlGetAttribLocation(program, "a_Normal");
mTextureCoordinateHandle = GLES20.GlGetAttribLocation(program, "a_TexCoordinate");
mTextPosHandle = GLES20.GlGetUniformLocation(program, "u_TextPos");
mTextureUniformHandle = GLES20.GlGetUniformLocation(program, "u_Texture");
mTextureUniformHandleF = GLES20.GlGetUniformLocation(program, "u_TextureF");
mTextureUniformHandleS = GLES20.GlGetUniformLocation(program, "u_TextureS");
unif_color = GLES20.GlGetUniformLocation(program, "u_Color");
lightPos = GLES20.GlGetUniformLocation(program, "u_LightPos");
}
/// <summary>
/// Allocates and initializes OpenGL resources needed by the plane renderer. Must be
/// called on the OpenGL thread, typically in
/// {@link GLSurfaceView.Renderer#onSurfaceCreated(GL10, EGLConfig)}.
/// </summary>
public void CreateOnGlThread(Context context)
{
//ShaderHelper.CheckGLError(TAG, "before create");
var buffers = new int[1];
GLES20.GlGenBuffers(1, buffers, 0);
mVbo = buffers[0];
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, mVbo);
mVboSize = INITIAL_BUFFER_POINTS * BYTES_PER_POINT;
GLES20.GlBufferData(GLES20.GlArrayBuffer, mVboSize, null, GLES20.GlDynamicDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
var vertexShader = ShaderHelper.Load(TAG, context,
GLES20.GlVertexShader, Resource.Raw.point_cloud_vertex);
var passthroughShader = ShaderHelper.Load(TAG, context,
GLES20.GlFragmentShader, Resource.Raw.passthrough_fragment);
mProgramName = GLES20.GlCreateProgram();
GLES20.GlAttachShader(mProgramName, vertexShader);
GLES20.GlAttachShader(mProgramName, passthroughShader);
GLES20.GlLinkProgram(mProgramName);
GLES20.GlUseProgram(mProgramName);
mPositionAttribute = GLES20.GlGetAttribLocation(mProgramName, "a_Position");
mColorUniform = GLES20.GlGetUniformLocation(mProgramName, "u_Color");
mModelViewProjectionUniform = GLES20.GlGetUniformLocation(
mProgramName, "u_ModelViewProjection");
mPointSizeUniform = GLES20.GlGetUniformLocation(mProgramName, "u_PointSize");
}
private void CreateProgram()
{
mProgram = CreateGlProgram();
mPosition = GLES20.GlGetAttribLocation(mProgram, "vPosition");
mCoord = GLES20.GlGetAttribLocation(mProgram, "vCoord");
mMatrix = GLES20.GlGetUniformLocation(mProgram, "vMatrix");
mTexture = GLES20.GlGetUniformLocation(mProgram, "vTexture");
mCoordMatrix = GLES20.GlGetUniformLocation(mProgram, "vCoordMatrix");
}
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);
}
private void CreateProgram()
{
ShaderUtil.CheckGlError(TAG, "Create program start.");
mProgram = HandShaderUtil.CreateGlProgram();
mPosition = GLES20.GlGetAttribLocation(mProgram, "inPosition");
mColor = GLES20.GlGetUniformLocation(mProgram, "inColor");
mPointSize = GLES20.GlGetUniformLocation(mProgram, "inPointSize");
mModelViewProjectionMatrix = GLES20.GlGetUniformLocation(mProgram, "inMVPMatrix");
ShaderUtil.CheckGlError(TAG, "Create program start.");
}
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();
}
private void CreateProgram()
{
ShaderUtil.CheckGlError(TAG, "program start.");
mProgram = WorldShaderUtil.GetLabelProgram();
glPositionParameter = GLES20.GlGetAttribLocation(mProgram, "inPosXZAlpha");
glModelViewProjectionMatrix =
GLES20.GlGetUniformLocation(mProgram, "inMVPMatrix");
glTexture = GLES20.GlGetUniformLocation(mProgram, "inTexture");
glPlaneUvMatrix = GLES20.GlGetUniformLocation(mProgram, "inPlanUVMatrix");
ShaderUtil.CheckGlError(TAG, "program end.");
}
private void CreateProgram()
{
ShaderUtil.CheckGlError(TAG, "Create gl program start.");
mProgram = BodyShaderUtil.CreateGlProgram();
mColor = GLES20.GlGetUniformLocation(mProgram, "inColor");
mPosition = GLES20.GlGetAttribLocation(mProgram, "inPosition");
mPointSize = GLES20.GlGetUniformLocation(mProgram, "inPointSize");
mProjectionMatrix = GLES20.GlGetUniformLocation(mProgram, "inProjectionMatrix");
mCoordinateSystem = GLES20.GlGetUniformLocation(mProgram, "inCoordinateSystem");
ShaderUtil.CheckGlError(TAG, "Create gl program end.");
}
private void CreateProgram()
{
ShaderUtil.CheckGlError(TAG, "Create gl program start.");
mProgram = CreateGlProgram();
mPositionAttribute = GLES20.GlGetAttribLocation(mProgram, "inPosition");
mColorUniform = GLES20.GlGetUniformLocation(mProgram, "inColor");
mModelViewProjectionUniform = GLES20.GlGetUniformLocation(mProgram, "inMVPMatrix");
mPointSizeUniform = GLES20.GlGetUniformLocation(mProgram, "inPointSize");
mTextureUniform = GLES20.GlGetUniformLocation(mProgram, "inTexture");
mTextureCoordAttribute = GLES20.GlGetAttribLocation(mProgram, "inTexCoord");
ShaderUtil.CheckGlError(TAG, "Create gl program end.");
}
/**
* \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");
}
private void CreateProgram()
{
ShaderUtil.CheckGlError(TAG, "Create program start.");
mGlProgram = WorldShaderUtil.GetObjectProgram();
mModelViewUniform = GLES20.GlGetUniformLocation(mGlProgram, "inViewMatrix");
mModelViewProjectionUniform = GLES20.GlGetUniformLocation(mGlProgram, "inMVPMatrix");
mPositionAttribute = GLES20.GlGetAttribLocation(mGlProgram, "inObjectPosition");
mNormalAttribute = GLES20.GlGetAttribLocation(mGlProgram, "inObjectNormalVector");
mTexCoordAttribute = GLES20.GlGetAttribLocation(mGlProgram, "inTexCoordinate");
mTextureUniform = GLES20.GlGetUniformLocation(mGlProgram, "inObjectTexture");
mLightingParametersUniform = GLES20.GlGetUniformLocation(mGlProgram, "inLight");
mColorUniform = GLES20.GlGetUniformLocation(mGlProgram, "inObjectColor");
Android.Opengl.Matrix.SetIdentityM(mModelMatrixs, 0);
ShaderUtil.CheckGlError(TAG, "Create program end.");
}
/**
* Initializes GL state. Call this after the EGL surface has been created and made current.
*/
public SurfaceTexture createTexture() {
mProgram = createProgram(VERTEX_SHADER, FRAGMENT_SHADER);
if (mProgram == 0) {
throw new Java.Lang.RuntimeException("failed creating program");
}
maPositionHandle = GLES20.GlGetAttribLocation(mProgram, "aPosition");
checkGlError("glGetAttribLocation aPosition");
if (maPositionHandle == -1) {
throw new Java.Lang.RuntimeException("Could not get attrib location for aPosition");
}
maTextureHandle = GLES20.GlGetAttribLocation(mProgram, "aTextureCoord");
checkGlError("glGetAttribLocation aTextureCoord");
if (maTextureHandle == -1) {
throw new Java.Lang.RuntimeException("Could not get attrib location for aTextureCoord");
}
muMVPMatrixHandle = GLES20.GlGetUniformLocation(mProgram, "uMVPMatrix");
checkGlError("glGetUniformLocation uMVPMatrix");
if (muMVPMatrixHandle == -1) {
throw new Java.Lang.RuntimeException("Could not get attrib location for uMVPMatrix");
}
muSTMatrixHandle = GLES20.GlGetUniformLocation(mProgram, "uSTMatrix");
checkGlError("glGetUniformLocation uSTMatrix");
if (muSTMatrixHandle == -1) {
throw new Java.Lang.RuntimeException("Could not get attrib location for uSTMatrix");
}
int[] textures = new int[1];
GLES20.GlGenTextures(1, textures, 0);
mTextureID = textures[0];
GLES20.GlBindTexture(GLES11Ext.GlTextureExternalOes, mTextureID);
checkGlError("glBindTexture mTextureID");
GLES20.GlTexParameterf(GLES11Ext.GlTextureExternalOes, GLES20.GlTextureMinFilter,
GLES20.GlNearest);
GLES20.GlTexParameterf(GLES11Ext.GlTextureExternalOes, GLES20.GlTextureMagFilter,
GLES20.GlLinear);
GLES20.GlTexParameteri(GLES11Ext.GlTextureExternalOes, GLES20.GlTextureWrapS,
GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES11Ext.GlTextureExternalOes, GLES20.GlTextureWrapT,
GLES20.GlClampToEdge);
checkGlError("glTexParameter");
mSurfaceTexture = new SurfaceTexture(mTextureID);
return mSurfaceTexture;
}
/// <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");
}
private ProgramHolder createProgramHolder()
{
ProgramHolder holder = new ProgramHolder();
holder.program = createProgram("attribute vec2 aPosition;\nattribute float aVignette;\nattribute vec2 aTextureCoord;\nvarying vec2 vTextureCoord;\nvarying float vVignette;\nuniform float uTextureCoordScale;\nvoid main() {\n gl_Position = vec4(aPosition, 0.0, 1.0);\n vTextureCoord = aTextureCoord.xy * uTextureCoordScale;\n vVignette = aVignette;\n}\n", "precision mediump float;\nvarying vec2 vTextureCoord;\nvarying float vVignette;\nuniform sampler2D uTextureSampler;\nvoid main() {\n gl_FragColor = vVignette * texture2D(uTextureSampler, vTextureCoord);\n}\n");
if (holder.program == 0)
{
throw new Java.Lang.RuntimeException("Could not create program");
}
holder.aPosition = GLES20.GlGetAttribLocation(holder.program, "aPosition");
checkGlError("glGetAttribLocation aPosition");
if (holder.aPosition == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for aPosition");
}
holder.aVignette = GLES20.GlGetAttribLocation(holder.program, "aVignette");
checkGlError("glGetAttribLocation aVignette");
if (holder.aVignette == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for aVignette");
}
holder.aTextureCoord = GLES20.GlGetAttribLocation(holder.program, "aTextureCoord");
checkGlError("glGetAttribLocation aTextureCoord");
if (holder.aTextureCoord == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for aTextureCoord");
}
holder.uTextureCoordScale = GLES20.GlGetUniformLocation(holder.program, "uTextureCoordScale");
checkGlError("glGetUniformLocation uTextureCoordScale");
if (holder.uTextureCoordScale == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for uTextureCoordScale");
}
holder.uTextureSampler = GLES20.GlGetUniformLocation(holder.program, "uTextureSampler");
checkGlError("glGetUniformLocation uTextureSampler");
if (holder.uTextureSampler == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for uTextureSampler");
}
return(holder);
}
private void Render(float[] matrix)
{
// clear Screen and Depth Buffer, we have set the clear color as black.
GLES20.GlClear(GLES20.GlColorBufferBit | GLES20.GlDepthBufferBit);
// get handle to vertex shader's vPosition member
int positionHandle = GLES20.GlGetAttribLocation(ShaderHelper.SpImage, "vPosition");
// Enable generic vertex attribute array
GLES20.GlEnableVertexAttribArray(positionHandle);
// Prepare the triangle coordinate data
GLES20.GlVertexAttribPointer(positionHandle, 3,
GLES20.GlFloat, false,
0, vertexBuffer);
// Get handle to texture coordinates location
int textureCoordinatesLocation = GLES20.GlGetAttribLocation(ShaderHelper.SpImage, "a_texCoord");
// Enable generic vertex attribute array
GLES20.GlEnableVertexAttribArray(textureCoordinatesLocation);
// Prepare the texturecoordinates
GLES20.GlVertexAttribPointer(textureCoordinatesLocation, 2, GLES20.GlFloat, false, 0, uvBuffer);
// Get handle to shape's transformation matrix
int matrixhandle = GLES20.GlGetUniformLocation(ShaderHelper.SpImage, "uMVPMatrix");
// Apply the projection and view transformation
GLES20.GlUniformMatrix4fv(matrixhandle, 1, false, matrix, 0);
// Get handle to textures locations
int samplerLocation = GLES20.GlGetUniformLocation(ShaderHelper.SpImage, "s_texture");
// Set the sampler texture unit to 0, where we have saved the texture.
GLES20.GlUniform1i(samplerLocation, 0);
// Draw the triangle
GLES20.GlDrawElements(GLES20.GlTriangles, indices.Length,
GLES20.GlUnsignedShort, drawListBuffer);
// Disable vertex array
GLES20.GlDisableVertexAttribArray(positionHandle);
GLES20.GlDisableVertexAttribArray(textureCoordinatesLocation);
}
public override void draw(float[] viewMatrix, float[] projectionMatrix)
{
GLES20.GlUseProgram(mProgram);
mVertexBuffer.Position(0);
// Compose the model, view, and projection matrices into a single m-v-p
// matrix
updateMvpMatrix(viewMatrix, projectionMatrix);
// Load vertex attribute data
mPosHandle = GLES20.GlGetAttribLocation(mProgram, "vPosition");
GLES20.GlVertexAttribPointer(mPosHandle, COORDS_PER_VERTEX, GLES20.GlFloat, false, 0, mVertexBuffer);
GLES20.GlEnableVertexAttribArray(mPosHandle);
mMVPMatrixHandle = GLES20.GlGetUniformLocation(mProgram, "uMVPMatrix");
GLES20.GlUniformMatrix4fv(mMVPMatrixHandle, 1, false, MvpMatrix, 0);
mColorHandle = GLES20.GlGetUniformLocation(mProgram, "aColor");
GLES20.GlUniform4f(mColorHandle, mColor[0], mColor[1], mColor[2], mColor[3]);
GLES20.GlLineWidth(mLineWidth);
GLES20.GlDrawArrays(GLES20.GlLineStrip, 0, mTrajectoryCount);
}
public void Init()
{
try
{
// Create program
MProgram = GlToolbox.CreateProgram(VertexShader, FragmentShader);
// Bind attributes and uniforms
MTexSamplerHandle = GLES20.GlGetUniformLocation(MProgram, "tex_sampler");
MTexCoordHandle = GLES20.GlGetAttribLocation(MProgram, "a_texcoord");
MPosCoordHandle = GLES20.GlGetAttribLocation(MProgram, "a_position");
// Setup coordinate buffers
MTexVertices = ByteBuffer.AllocateDirect(TexVertices.Length * FloatSizeBytes).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
MTexVertices.Put(TexVertices).Position(0);
MPosVertices = ByteBuffer.AllocateDirect(PosVertices.Length * FloatSizeBytes).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
MPosVertices.Put(PosVertices).Position(0);
}
catch (Exception e)
{
Methods.DisplayReportResultTrack(e);
}
}
/**
* Encapsulates the OpenGL ES instructions for drawing this shape.
*
* @param mvpMatrix - The Model View Project matrix in which to draw
* this shape.
*/
public void draw(float[] mvpMatrix)
{
// Add program to OpenGL environment
GLES20.GlUseProgram(mProgram);
// get handle to vertex shader's vPosition member
mPositionHandle = GLES20.GlGetAttribLocation(mProgram, "vPosition");
// Enable a handle to the triangle vertices
GLES20.GlEnableVertexAttribArray(mPositionHandle);
// Prepare the triangle coordinate data
GLES20.GlVertexAttribPointer(
mPositionHandle, COORDS_PER_VERTEX,
GLES20.GlFloat, false,
vertexStride, vertexBuffer);
// get handle to fragment shader's vColor member
mColorHandle = GLES20.GlGetUniformLocation(mProgram, "vColor");
// Set color for drawing the triangle
GLES20.GlUniform4fv(mColorHandle, 1, color, 0);
// get handle to shape's transformation matrix
mMVPMatrixHandle = GLES20.GlGetUniformLocation(mProgram, "uMVPMatrix");
MainRenderer.checkGlError("glGetUniformLocation");
// Apply the projection and view transformation
GLES20.GlUniformMatrix4fv(mMVPMatrixHandle, 1, false, mvpMatrix, 0);
MainRenderer.checkGlError("glUniformMatrix4fv");
// Draw the triangle
GLES20.GlDrawArrays(GLES20.GlTriangles, 0, vertexCount);
// Disable vertex array
GLES20.GlDisableVertexAttribArray(mPositionHandle);
}
public void Init()
{
// Create program
_program = GLToolbox.CreateProgram(VertexShader, FragmentShader);
// Bind attributes and uniforms
_texSamplerHandle = GLES20.GlGetUniformLocation(_program,
"tex_sampler");
_texCoordHandle = GLES20.GlGetAttribLocation(_program, "a_texcoord");
_posCoordHandle = GLES20.GlGetAttribLocation(_program, "a_position");
// Setup coordinate buffers
_texVertices = ByteBuffer.AllocateDirect(
TexVertices.Length * FloatSizeBytes)
.Order(ByteOrder.NativeOrder()).AsFloatBuffer();
_texVertices.Put(TexVertices).Position(0);
_posVertices = ByteBuffer.AllocateDirect(
PosVertices.Length * FloatSizeBytes)
.Order(ByteOrder.NativeOrder()).AsFloatBuffer();
_posVertices.Put(PosVertices).Position(0);
}
private int[] VBOBuffers = new int[2]; //2 buffers for vertices and colors
public void OnSurfaceCreated(IGL10 gl, Javax.Microedition.Khronos.Egl.EGLConfig config)
{
const float edge = 1.0f;
// X, Y, Z,
float[] triangleVerticesData =
{
-1.5f, -0.25f, 0.0f,
0.5f, -0.25f, 0.0f,
0.0f, 0.559016994f, 0.0f
};
FloatBuffer mTriangleVertices = ByteBuffer.AllocateDirect(triangleVerticesData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleVertices.Put(triangleVerticesData).Flip();
// 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
};
FloatBuffer mTriangleColors = ByteBuffer.AllocateDirect(triangleColorsData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleColors.Put(triangleColorsData).Flip();
//Use VBO
GLES20.GlGenBuffers(2, VBOBuffers, 0); //2 buffers for vertices 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, 0);
GLES20.GlClearColor(1.0f, 1.0f, 1.0f, 1.0f);
// 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 = 1.0f;
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.
+ "void main() \n" // The entry point for our vertex shader.
+ "{ \n"
+ " 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.
+ "void main() \n" // The entry point for our fragment shader.
+ "{ \n"
+ " gl_FragColor = 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");
// 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");
// Tell OpenGL to use this program when rendering.
GLES20.GlUseProgram(programHandle);
}
/**
* 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);
}
/**
* Creates the buffers we use to store information about the 3D world.
*
* OpenGL doesn't use Java arrays, but rather needs data in a format it can understand.
* Hence we use ByteBuffers.
*/
public void OnSurfaceCreated(Javax.Microedition.Khronos.Egl.EGLConfig config)
{
Android.Util.Log.Info(TAG, "onSurfaceCreated");
GLES20.GlClearColor(0.1f, 0.1f, 0.1f, 0.5f); // Dark background so text shows up well.
var bbVertices = ByteBuffer.AllocateDirect(WorldLayoutData.CUBE_COORDS.Length * 4);
bbVertices.Order(ByteOrder.NativeOrder());
cubeVertices = bbVertices.AsFloatBuffer();
cubeVertices.Put(WorldLayoutData.CUBE_COORDS);
cubeVertices.Position(0);
var bbColors = ByteBuffer.AllocateDirect(WorldLayoutData.CUBE_COLORS.Length * 4);
bbColors.Order(ByteOrder.NativeOrder());
cubeColors = bbColors.AsFloatBuffer();
cubeColors.Put(WorldLayoutData.CUBE_COLORS);
cubeColors.Position(0);
var bbFoundColors = ByteBuffer.AllocateDirect(WorldLayoutData.CUBE_FOUND_COLORS.Length * 4);
bbFoundColors.Order(ByteOrder.NativeOrder());
cubeFoundColors = bbFoundColors.AsFloatBuffer();
cubeFoundColors.Put(WorldLayoutData.CUBE_FOUND_COLORS);
cubeFoundColors.Position(0);
var bbNormals = ByteBuffer.AllocateDirect(WorldLayoutData.CUBE_NORMALS.Length * 4);
bbNormals.Order(ByteOrder.NativeOrder());
cubeNormals = bbNormals.AsFloatBuffer();
cubeNormals.Put(WorldLayoutData.CUBE_NORMALS);
cubeNormals.Position(0);
// make a floor
var bbFloorVertices = ByteBuffer.AllocateDirect(WorldLayoutData.FLOOR_COORDS.Length * 4);
bbFloorVertices.Order(ByteOrder.NativeOrder());
floorVertices = bbFloorVertices.AsFloatBuffer();
floorVertices.Put(WorldLayoutData.FLOOR_COORDS);
floorVertices.Position(0);
var bbFloorNormals = ByteBuffer.AllocateDirect(WorldLayoutData.FLOOR_NORMALS.Length * 4);
bbFloorNormals.Order(ByteOrder.NativeOrder());
floorNormals = bbFloorNormals.AsFloatBuffer();
floorNormals.Put(WorldLayoutData.FLOOR_NORMALS);
floorNormals.Position(0);
var bbFloorColors = ByteBuffer.AllocateDirect(WorldLayoutData.FLOOR_COLORS.Length * 4);
bbFloorColors.Order(ByteOrder.NativeOrder());
floorColors = bbFloorColors.AsFloatBuffer();
floorColors.Put(WorldLayoutData.FLOOR_COLORS);
floorColors.Position(0);
int vertexShader = loadGLShader(GLES20.GlVertexShader, Resource.Raw.light_vertex);
int gridShader = loadGLShader(GLES20.GlFragmentShader, Resource.Raw.grid_fragment);
int passthroughShader = loadGLShader(GLES20.GlFragmentShader, Resource.Raw.passthrough_fragment);
cubeProgram = GLES20.GlCreateProgram();
GLES20.GlAttachShader(cubeProgram, vertexShader);
GLES20.GlAttachShader(cubeProgram, passthroughShader);
GLES20.GlLinkProgram(cubeProgram);
GLES20.GlUseProgram(cubeProgram);
CheckGLError("Cube program");
cubePositionParam = GLES20.GlGetAttribLocation(cubeProgram, "a_Position");
cubeNormalParam = GLES20.GlGetAttribLocation(cubeProgram, "a_Normal");
cubeColorParam = GLES20.GlGetAttribLocation(cubeProgram, "a_Color");
cubeModelParam = GLES20.GlGetUniformLocation(cubeProgram, "u_Model");
cubeModelViewParam = GLES20.GlGetUniformLocation(cubeProgram, "u_MVMatrix");
cubeModelViewProjectionParam = GLES20.GlGetUniformLocation(cubeProgram, "u_MVP");
cubeLightPosParam = GLES20.GlGetUniformLocation(cubeProgram, "u_LightPos");
CheckGLError("Cube program params");
floorProgram = GLES20.GlCreateProgram();
GLES20.GlAttachShader(floorProgram, vertexShader);
GLES20.GlAttachShader(floorProgram, gridShader);
GLES20.GlLinkProgram(floorProgram);
GLES20.GlUseProgram(floorProgram);
CheckGLError("Floor program");
floorModelParam = GLES20.GlGetUniformLocation(floorProgram, "u_Model");
floorModelViewParam = GLES20.GlGetUniformLocation(floorProgram, "u_MVMatrix");
floorModelViewProjectionParam = GLES20.GlGetUniformLocation(floorProgram, "u_MVP");
floorLightPosParam = GLES20.GlGetUniformLocation(floorProgram, "u_LightPos");
floorPositionParam = GLES20.GlGetAttribLocation(floorProgram, "a_Position");
floorNormalParam = GLES20.GlGetAttribLocation(floorProgram, "a_Normal");
floorColorParam = GLES20.GlGetAttribLocation(floorProgram, "a_Color");
CheckGLError("Floor program params");
Matrix.SetIdentityM(modelFloor, 0);
Matrix.TranslateM(modelFloor, 0, 0, -floorDepth, 0); // Floor appears below user.
// Avoid any delays during start-up due to decoding of sound files.
System.Threading.Tasks.Task.Run(() => {
// Start spatial audio playback of SOUND_FILE at the model postion. The returned
//soundId handle is stored and allows for repositioning the sound object whenever
// the cube position changes.
gvrAudioEngine.PreloadSoundFile(SOUND_FILE);
soundId = gvrAudioEngine.CreateSoundObject(SOUND_FILE);
gvrAudioEngine.SetSoundObjectPosition(
soundId, modelPosition [0], modelPosition [1], modelPosition [2]);
gvrAudioEngine.PlaySound(soundId, true /* looped playback */);
});
UpdateModelPosition();
CheckGLError("onSurfaceCreated");
}
