/// <summary>
/// Create the shader program for label display in the openGL thread.
/// This method will be called when WorldRenderManager's OnSurfaceCreated.
/// </summary>
/// <param name="labelBitmaps">View data indicating the plane type.</param>
public void Init(List <Bitmap> labelBitmaps)
{
ShaderUtil.CheckGlError(TAG, "Init start.");
if (labelBitmaps.Count == 0)
{
Log.Debug(TAG, "No bitmap.");
}
CreateProgram();
int idx = 0;
GLES20.GlGenTextures(textures.Length, textures, 0);
foreach (Bitmap labelBitmap in labelBitmaps)
{
// for semantic label plane
GLES20.GlActiveTexture(GLES20.GlTexture0 + idx);
GLES20.GlBindTexture(GLES20.GlTexture2d, textures[idx]);
GLES20.GlTexParameteri(
GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlLinearMipmapLinear);
GLES20.GlTexParameteri(
GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlLinear);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, labelBitmap, 0);
GLES20.GlGenerateMipmap(GLES20.GlTexture2d);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
idx++;
ShaderUtil.CheckGlError(TAG, "Texture loading");
}
ShaderUtil.CheckGlError(TAG, "Init end.");
}
/// <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.");
}
/// <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 void InitGlTextureData(Context context)
{
ShaderUtil.CheckGlError(TAG, "Init gl texture data start.");
Bitmap textureBitmap = null;
AssetManager assets = context.Assets;
try
{
var sr = assets.Open("AR_logo.png");
textureBitmap = BitmapFactory.DecodeStream(sr);
}
catch (Exception e)
{
Log.Debug(TAG, " Open Bitmap Error! ");
return;
}
ShaderUtil.CheckGlError(TAG, "bitmap error.");
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, textureBitmap, 0);
GLES20.GlGenerateMipmap(GLES20.GlTexture2d);
GLES20.GlBindTexture(GLES20.GlTexture2d, 0);
textureBitmap.Recycle();
ShaderUtil.CheckGlError(TAG, "Init gl texture data end.");
}
/**
* 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);
}