public void setSize(int width, int height) {
Utils.assertTrue(width >= 0 && height >= 0);
if (mTargetTexture == null) {
mScreenWidth = width;
mScreenHeight = height;
}
mAlpha = 1.0f;
GL11 gl = mGL;
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL11.GL_PROJECTION);
gl.glLoadIdentity();
GLU.gluOrtho2D(gl, 0, width, 0, height);
gl.glMatrixMode(GL11.GL_MODELVIEW);
gl.glLoadIdentity();
float matrix[] = mMatrixValues;
Matrix.setIdentityM(matrix, 0);
// to match the graphic coordinate system in android, we flip it vertically.
if (mTargetTexture == null) {
Matrix.translateM(matrix, 0, 0, height, 0);
Matrix.scaleM(matrix, 0, 1, -1, 1);
}
}
private void setTextureCoords(float left, float top, float right, float bottom) {
mGL.glMatrixMode(GL11.GL_TEXTURE);
mTextureMatrixValues[0] = right - left;
mTextureMatrixValues[5] = bottom - top;
mTextureMatrixValues[10] = 1;
mTextureMatrixValues[12] = left;
mTextureMatrixValues[13] = top;
mTextureMatrixValues[15] = 1;
mGL.glLoadMatrixf(mTextureMatrixValues, 0);
mGL.glMatrixMode(GL11.GL_MODELVIEW);
}
public void onDrawFrame(GL10 gl10, boolean fpsTimeElapsed) {
GL11 gl = (GL11) gl10;
updateWithDelta(1.0f / MAXIMUM_UPDATE_RATE);
synchronized (transforms) {
if (fpsTimeElapsed) {
onTransform();
}
}
sourcePosition.x = x;
sourcePosition.y = y;
gl.glMatrixMode(GL11.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glEnableClientState(GL11.GL_COLOR_ARRAY);
// unbind all buffers
gl.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, 0);
gl.glBindBuffer(GL11.GL_ARRAY_BUFFER, 0);
gl.glBindTexture(GL11.GL_TEXTURE_2D, 0);
gl.glBindBuffer(GL11.GL_ARRAY_BUFFER, verticesID[0]);
// Using glBufferSubData means that a copy is done from the quads array to the buffer rather
// than recreating the buffer which
// would be an allocation and copy. The copy also only takes over the number of live particles.
// This provides a nice performance
// boost.
quadsBuffer.put(quads);
quadsBuffer.position(0);
gl.glBufferSubData(GL11.GL_ARRAY_BUFFER, 0, 128 * particleIndex, quadsBuffer);
// Configure the vertex pointer which will use the currently bound VBO for its data
gl.glVertexPointer(2, GL11.GL_FLOAT, 32, 0);
gl.glColorPointer(4, GL11.GL_FLOAT, 32, (4 * 4));
gl.glTexCoordPointer(2, GL11.GL_FLOAT, 32, (4 * 2));
if (hasTexture) {
gl.glEnable(GL11.GL_TEXTURE_2D);
gl.glBindTexture(GL11.GL_TEXTURE_2D, getTexture().getTextureId());
}
gl.glBlendFunc(srcBlendFactor, dstBlendFactor);
gl.glDrawElements(GL11.GL_TRIANGLES, particleIndex * 6, GL11.GL_UNSIGNED_SHORT, indicesBuffer);
gl.glBindBuffer(GL11.GL_ARRAY_BUFFER, 0);
gl.glBlendFunc(GL11.GL_ONE, GL11.GL_ONE_MINUS_SRC_ALPHA);
gl.glDisableClientState(GL11.GL_COLOR_ARRAY);
}
@Override
protected void onDraw(Canvas canvas) {
GL11 gl = (GL11) context.getGL();
int w = getWidth();
int h = getHeight();
context.waitNative(canvas, this);
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
gl.glViewport(0, 0, w, h);
GLU.gluPerspective(gl, 45.0f, ((float) w) / h, 1f, 100f);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
GLU.gluLookAt(gl, 0, 0, 5, 0, 0, 0, 0, 1, 0);
gl.glTranslatef(0, 0, -10);
gl.glRotatef(30.0f, 1, 0, 0);
// gl.glRotatef(40.0f, 0, 1, 0);
gl.glVertexPointer(3, GL10.GL_FIXED, 0, vertices[frame_ix]);
gl.glNormalPointer(GL10.GL_FIXED, 0, normals);
gl.glTexCoordPointer(2, GL10.GL_FIXED, 0, texCoords);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
// gl.glColor4f(1,0,0,1);
gl.glBindTexture(GL10.GL_TEXTURE_2D, tex);
// gl.glBindTexture(GL10.GL_TEXTURE_2D, 0);
gl.glDrawElements(GL10.GL_TRIANGLES, verts, GL10.GL_UNSIGNED_SHORT, indices);
frame_ix = (frame_ix + 1) % m.getFrameCount();
context.waitGL();
}
// This is a GLSurfaceView.Renderer callback
public void onSurfaceChanged(GL10 gl1, int width, int height) {
Log.v(TAG, "onSurfaceChanged: " + width + "x" + height + ", gl10: " + gl1.toString());
GL11 gl = (GL11) gl1;
mGL = gl;
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL11.GL_PROJECTION);
gl.glLoadIdentity();
GLU.gluOrtho2D(gl, 0, width, 0, height);
Matrix matrix = mTransformation.getMatrix();
matrix.reset();
matrix.preTranslate(0, getHeight());
matrix.preScale(1, -1);
}
private void setTextureCoords(float[] mTextureTransform) {
mGL.glMatrixMode(GL11.GL_TEXTURE);
mGL.glLoadMatrixf(mTextureTransform, 0);
mGL.glMatrixMode(GL11.GL_MODELVIEW);
}