| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.gallery3d.ui; |
| |
| import com.android.gallery3d.util.IntArray; |
| import com.android.gallery3d.util.Utils; |
| |
| import android.graphics.Rect; |
| import android.graphics.RectF; |
| import android.opengl.GLU; |
| import android.opengl.Matrix; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.nio.FloatBuffer; |
| import java.util.Stack; |
| |
| import javax.microedition.khronos.opengles.GL10; |
| import javax.microedition.khronos.opengles.GL11; |
| import javax.microedition.khronos.opengles.GL11Ext; |
| |
| public class GLCanvasImp implements GLCanvas { |
| @SuppressWarnings("unused") |
| private static final String TAG = "GLCanvasImp"; |
| |
| private static final float OPAQUE_ALPHA = 0.95f; |
| |
| // The first four pairs of (x, y) are for drawing a rectangle, and the last |
| // two are for drawing a line. |
| private static final float[] BOX_COORDINATES = { |
| 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1 }; |
| |
| private final GL11 mGL; |
| |
| private final float mMatrixValues[] = new float[16]; |
| private final float mTextureMatrixValues[] = new float[16]; |
| |
| // mapPoints needs 10 input and output numbers. |
| private final float mMapPointsBuffer[] = new float[10]; |
| |
| private final float mTextureColor[] = new float[4]; |
| |
| private int mBoxCoords; |
| |
| private final GLState mGLState; |
| |
| private long mAnimationTime; |
| |
| private float mAlpha; |
| private final Rect mClipRect = new Rect(); |
| private final Stack<ConfigState> mRestoreStack = |
| new Stack<ConfigState>(); |
| private ConfigState mRecycledRestoreAction; |
| |
| private final RectF mDrawTextureSourceRect = new RectF(); |
| private final RectF mDrawTextureTargetRect = new RectF(); |
| private final float[] mTempMatrix = new float[32]; |
| private final IntArray mUnboundTextures = new IntArray(); |
| private final IntArray mDeleteBuffers = new IntArray(); |
| |
| // Drawing statistics |
| int mCountDrawLine; |
| int mCountFillRect; |
| int mCountDrawMesh; |
| int mCountTextureRect; |
| int mCountTextureOES; |
| |
| GLCanvasImp(GL11 gl) { |
| mGL = gl; |
| mGLState = new GLState(gl); |
| initialize(); |
| } |
| |
| public void setSize(int width, int height) { |
| Utils.Assert(width >= 0 && height >= 0); |
| |
| 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(); |
| |
| // The positive direction in Y coordinate in OpenGL is from bottom to |
| // top, which is different from the coordinate system in Java. So, we |
| // flip it here. |
| float matrix[] = mMatrixValues; |
| Matrix.setIdentityM(matrix, 0); |
| Matrix.translateM(matrix, 0, 0, height, 0); |
| Matrix.scaleM(matrix, 0, 1, -1, 1); |
| |
| mClipRect.set(0, 0, width, height); |
| gl.glScissor(0, 0, width, height); |
| } |
| |
| public long currentAnimationTimeMillis() { |
| return mAnimationTime; |
| } |
| |
| public void setAlpha(float alpha) { |
| Utils.Assert(alpha >= 0 && alpha <= 1); |
| mAlpha = alpha; |
| } |
| |
| public void multiplyAlpha(float alpha) { |
| Utils.Assert(alpha >= 0 && alpha <= 1); |
| mAlpha *= alpha; |
| } |
| |
| public float getAlpha() { |
| return mAlpha; |
| } |
| |
| private static ByteBuffer allocateDirectNativeOrderBuffer(int size) { |
| return ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder()); |
| } |
| |
| private void initialize() { |
| GL11 gl = mGL; |
| |
| // First create an nio buffer, then create a VBO from it. |
| int size = BOX_COORDINATES.length * Float.SIZE / Byte.SIZE; |
| FloatBuffer xyBuffer = allocateDirectNativeOrderBuffer(size).asFloatBuffer(); |
| xyBuffer.put(BOX_COORDINATES, 0, BOX_COORDINATES.length).position(0); |
| |
| int[] name = new int[1]; |
| gl.glGenBuffers(1, name, 0); |
| mBoxCoords = name[0]; |
| |
| gl.glBindBuffer(GL11.GL_ARRAY_BUFFER, mBoxCoords); |
| gl.glBufferData(GL11.GL_ARRAY_BUFFER, |
| xyBuffer.capacity() * (Float.SIZE / Byte.SIZE), |
| xyBuffer, GL11.GL_STATIC_DRAW); |
| |
| gl.glVertexPointer(2, GL11.GL_FLOAT, 0, 0); |
| gl.glTexCoordPointer(2, GL11.GL_FLOAT, 0, 0); |
| |
| // Enable the texture coordinate array for Texture 1 |
| gl.glClientActiveTexture(GL11.GL_TEXTURE1); |
| gl.glTexCoordPointer(2, GL11.GL_FLOAT, 0, 0); |
| gl.glClientActiveTexture(GL11.GL_TEXTURE0); |
| gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); |
| |
| // mMatrixValues will be initialized in setSize() |
| mAlpha = 1.0f; |
| } |
| |
| private static void putRectangle(float x, float y, |
| float width, float height, float[] buffer, FloatBuffer pointer) { |
| buffer[0] = x; |
| buffer[1] = y; |
| buffer[2] = x + width; |
| buffer[3] = y; |
| buffer[4] = x; |
| buffer[5] = y + height; |
| buffer[6] = x + width; |
| buffer[7] = y + height; |
| pointer.put(buffer, 0, 8).position(0); |
| } |
| |
| public void drawLine(int x1, int y1, int x2, int y2, int color) { |
| mGLState.setColorMode(color, mAlpha); |
| GL11 gl = mGL; |
| |
| saveTransform(); |
| translate(x1, y1, 0); |
| scale(x2 - x1, y2 - y1, 1); |
| |
| gl.glLoadMatrixf(mMatrixValues, 0); |
| gl.glDrawArrays(GL11.GL_LINE_STRIP, 4, 2); |
| |
| restoreTransform(); |
| mCountDrawLine++; |
| } |
| |
| public void fillRect(float x, float y, float width, float height, int color) { |
| mGLState.setColorMode(color, mAlpha); |
| GL11 gl = mGL; |
| |
| saveTransform(); |
| translate(x, y, 0); |
| scale(width, height, 1); |
| |
| gl.glLoadMatrixf(mMatrixValues, 0); |
| gl.glDrawArrays(GL11.GL_TRIANGLE_STRIP, 0, 4); |
| |
| restoreTransform(); |
| mCountFillRect++; |
| } |
| |
| public void translate(float x, float y, float z) { |
| Matrix.translateM(mMatrixValues, 0, x, y, z); |
| } |
| |
| public void scale(float sx, float sy, float sz) { |
| Matrix.scaleM(mMatrixValues, 0, sx, sy, sz); |
| } |
| |
| public void rotate(float angle, float x, float y, float z) { |
| float[] temp = mTempMatrix; |
| Matrix.setRotateM(temp, 0, angle, x, y, z); |
| Matrix.multiplyMM(temp, 16, mMatrixValues, 0, temp, 0); |
| System.arraycopy(temp, 16, mMatrixValues, 0, 16); |
| } |
| |
| private void textureRect(float x, float y, float width, float height) { |
| GL11 gl = mGL; |
| |
| saveTransform(); |
| translate(x, y, 0); |
| scale(width, height, 1); |
| |
| gl.glLoadMatrixf(mMatrixValues, 0); |
| gl.glDrawArrays(GL11.GL_TRIANGLE_STRIP, 0, 4); |
| |
| restoreTransform(); |
| mCountTextureRect++; |
| } |
| |
| public void drawMesh(BasicTexture tex, int x, int y, int xyBuffer, |
| int uvBuffer, int indexBuffer, int indexCount) { |
| float alpha = mAlpha; |
| if (!bindTexture(tex)) return; |
| |
| mGLState.setBlendEnabled(!tex.isOpaque() || alpha < OPAQUE_ALPHA); |
| mGLState.setTextureAlpha(alpha); |
| |
| // Reset the texture matrix. We will set our own texture coordinates |
| // below. |
| setTextureCoords(0, 0, 1, 1); |
| |
| saveTransform(); |
| translate(x, y, 0); |
| |
| mGL.glLoadMatrixf(mMatrixValues, 0); |
| |
| mGL.glBindBuffer(GL11.GL_ARRAY_BUFFER, xyBuffer); |
| mGL.glVertexPointer(2, GL11.GL_FLOAT, 0, 0); |
| |
| mGL.glBindBuffer(GL11.GL_ARRAY_BUFFER, uvBuffer); |
| mGL.glTexCoordPointer(2, GL11.GL_FLOAT, 0, 0); |
| |
| mGL.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, indexBuffer); |
| mGL.glDrawElements(GL11.GL_TRIANGLE_STRIP, |
| indexCount, GL11.GL_UNSIGNED_BYTE, 0); |
| |
| mGL.glBindBuffer(GL11.GL_ARRAY_BUFFER, mBoxCoords); |
| mGL.glVertexPointer(2, GL11.GL_FLOAT, 0, 0); |
| mGL.glTexCoordPointer(2, GL11.GL_FLOAT, 0, 0); |
| |
| restoreTransform(); |
| mCountDrawMesh++; |
| } |
| |
| private float[] mapPoints(float matrix[], int x1, int y1, int x2, int y2) { |
| float[] point = mMapPointsBuffer; |
| int srcOffset = 6; |
| point[srcOffset] = x1; |
| point[srcOffset + 1] = y1; |
| point[srcOffset + 2] = 0; |
| point[srcOffset + 3] = 1; |
| |
| int resultOffset = 0; |
| Matrix.multiplyMV(point, resultOffset, matrix, 0, point, srcOffset); |
| point[resultOffset] /= point[resultOffset + 3]; |
| point[resultOffset + 1] /= point[resultOffset + 3]; |
| |
| // map the second point |
| point[srcOffset] = x2; |
| point[srcOffset + 1] = y2; |
| resultOffset = 2; |
| Matrix.multiplyMV(point, resultOffset, matrix, 0, point, srcOffset); |
| point[resultOffset] /= point[resultOffset + 3]; |
| point[resultOffset + 1] /= point[resultOffset + 3]; |
| |
| return point; |
| } |
| |
| public boolean clipRect(int left, int top, int right, int bottom) { |
| float point[] = mapPoints(mMatrixValues, left, top, right, bottom); |
| |
| // mMatrix could be a rotation matrix. In this case, we need to find |
| // the boundaries after rotation. (only handle 90 * n degrees) |
| if (point[0] > point[2]) { |
| left = (int) point[2]; |
| right = (int) point[0]; |
| } else { |
| left = (int) point[0]; |
| right = (int) point[2]; |
| } |
| if (point[1] > point[3]) { |
| top = (int) point[3]; |
| bottom = (int) point[1]; |
| } else { |
| top = (int) point[1]; |
| bottom = (int) point[3]; |
| } |
| Rect clip = mClipRect; |
| |
| boolean intersect = clip.intersect(left, top, right, bottom); |
| if (!intersect) clip.set(0, 0, 0, 0); |
| mGL.glScissor(clip.left, clip.top, clip.width(), clip.height()); |
| return intersect; |
| } |
| |
| private void drawBoundTexture( |
| BasicTexture texture, int x, int y, int width, int height) { |
| // Test whether it has been rotated or flipped, if so, glDrawTexiOES |
| // won't work |
| if (isMatrixRotatedOrFlipped(mMatrixValues)) { |
| setTextureCoords(0, 0, |
| (texture.getWidth() - 0.5f) / texture.getTextureWidth(), |
| (texture.getHeight() - 0.5f) / texture.getTextureHeight()); |
| textureRect(x, y, width, height); |
| } else { |
| // draw the rect from bottom-left to top-right |
| float points[] = mapPoints( |
| mMatrixValues, x, y + height, x + width, y); |
| x = (int) points[0]; |
| y = (int) points[1]; |
| width = (int) points[2] - x; |
| height = (int) points[3] - y; |
| if (width > 0 && height > 0) { |
| ((GL11Ext) mGL).glDrawTexiOES(x, y, 0, width, height); |
| mCountTextureOES++; |
| } |
| } |
| } |
| |
| public void drawTexture( |
| BasicTexture texture, int x, int y, int width, int height) { |
| drawTexture(texture, x, y, width, height, mAlpha); |
| } |
| |
| public void drawTexture(BasicTexture texture, |
| int x, int y, int width, int height, float alpha) { |
| if (width <= 0 || height <= 0) return; |
| |
| mGLState.setBlendEnabled(!texture.isOpaque() || alpha < OPAQUE_ALPHA); |
| if (!bindTexture(texture)) return; |
| mGLState.setTextureAlpha(alpha); |
| drawBoundTexture(texture, x, y, width, height); |
| } |
| |
| public void drawTexture(BasicTexture texture, RectF source, RectF target) { |
| if (target.width() <= 0 || target.height() <= 0) return; |
| |
| // Copy the input to avoid changing it. |
| mDrawTextureSourceRect.set(source); |
| mDrawTextureTargetRect.set(target); |
| source = mDrawTextureSourceRect; |
| target = mDrawTextureTargetRect; |
| |
| mGLState.setBlendEnabled(!texture.isOpaque() || mAlpha < OPAQUE_ALPHA); |
| if (!bindTexture(texture)) return; |
| convertCoordinate(source, target, texture); |
| setTextureCoords(source); |
| mGLState.setTextureAlpha(mAlpha); |
| textureRect(target.left, target.top, target.width(), target.height()); |
| } |
| |
| // This function changes the source coordinate to the texture coordinates. |
| // It also clips the source and target coordinates if it is beyond the |
| // bound of the texture. |
| private void convertCoordinate(RectF source, RectF target, |
| BasicTexture texture) { |
| |
| int width = texture.getWidth(); |
| int height = texture.getHeight(); |
| int texWidth = texture.getTextureWidth(); |
| int texHeight = texture.getTextureHeight(); |
| // Convert to texture coordinates |
| source.left /= texWidth; |
| source.right /= texWidth; |
| source.top /= texHeight; |
| source.bottom /= texHeight; |
| |
| // Clip if the rendering range is beyond the bound of the texture. |
| if (width < texWidth) { |
| float xBound = (width - 0.5f) / texWidth; |
| if (source.right > xBound) { |
| target.right = target.left + target.width() * |
| (xBound - source.left) / source.width(); |
| source.right = xBound; |
| } |
| } |
| if (height < texHeight) { |
| float yBound = (height - 0.5f) / texHeight; |
| if (source.bottom > yBound) { |
| target.bottom = target.top + target.height() * |
| (yBound - source.top) / source.height(); |
| source.bottom = yBound; |
| } |
| } |
| } |
| |
| public void drawMixed(BasicTexture from, BasicTexture to, |
| float ratio, int x, int y, int w, int h) { |
| drawMixed(from, to, ratio, x, y, w, h, mAlpha); |
| } |
| |
| private boolean bindTexture(BasicTexture texture) { |
| if (!texture.onBind(this)) return false; |
| mGLState.setTexture2DEnabled(true); |
| mGL.glBindTexture(GL11.GL_TEXTURE_2D, texture.getId()); |
| return true; |
| } |
| |
| private void setTextureColor(float r, float g, float b, float alpha) { |
| float[] color = mTextureColor; |
| color[0] = r; |
| color[1] = g; |
| color[2] = b; |
| color[3] = alpha; |
| } |
| |
| private void drawMixed(BasicTexture from, BasicTexture to, |
| float ratio, int x, int y, int width, int height, float alpha) { |
| |
| if (ratio <= 0) { |
| drawTexture(from, x, y, width, height, alpha); |
| return; |
| } else if (ratio >= 1) { |
| drawTexture(to, x, y, width, height, alpha); |
| return; |
| } |
| |
| // In the current implementation the two textures must have the |
| // same size. |
| Utils.Assert(from.getWidth() == to.getWidth() |
| && from.getHeight() == to.getHeight()); |
| |
| mGLState.setBlendEnabled(!from.isOpaque() |
| || !to.isOpaque() || alpha < OPAQUE_ALPHA); |
| |
| final GL11 gl = mGL; |
| if (!bindTexture(from)) return; |
| |
| // |
| // The formula we want: |
| // alpha * ((1 - ratio) * from + ratio * to) |
| // The formula that GL supports is in the form of: |
| // (1 - combo) * (modulate * from) + combo * to |
| // |
| // So, we have combo = alpha * ratio |
| // and modulate = alpha * (1f - ratio) / (1 - combo) |
| // |
| float comboRatio = alpha * ratio; |
| |
| // handle the case that (1 - comboRatio) == 0 |
| if (alpha < OPAQUE_ALPHA) { |
| mGLState.setTextureAlpha(alpha * (1f - ratio) / (1f - comboRatio)); |
| } else { |
| mGLState.setTextureAlpha(1f); |
| } |
| |
| gl.glActiveTexture(GL11.GL_TEXTURE1); |
| if (!bindTexture(to)) { |
| // Disable TEXTURE1. |
| gl.glDisable(GL11.GL_TEXTURE_2D); |
| // Switch back to the default texture unit. |
| gl.glActiveTexture(GL11.GL_TEXTURE0); |
| return; |
| } |
| gl.glEnable(GL11.GL_TEXTURE_2D); |
| |
| // Interpolate the RGB and alpha values between both textures. |
| mGLState.setTexEnvMode(GL11.GL_COMBINE); |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_COMBINE_RGB, GL11.GL_INTERPOLATE); |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_COMBINE_ALPHA, GL11.GL_INTERPOLATE); |
| |
| // Specify the interpolation factor via the alpha component of |
| // GL_TEXTURE_ENV_COLORs. |
| // We don't use the RGB color, so just give them 0s. |
| setTextureColor(0, 0, 0, comboRatio); |
| gl.glTexEnvfv(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_COLOR, mTextureColor, 0); |
| |
| // Wire up the interpolation factor for RGB. |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_SRC2_RGB, GL11.GL_CONSTANT); |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_OPERAND2_RGB, GL11.GL_SRC_ALPHA); |
| |
| // Wire up the interpolation factor for alpha. |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_SRC2_ALPHA, GL11.GL_CONSTANT); |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_OPERAND2_ALPHA, GL11.GL_SRC_ALPHA); |
| |
| // Draw the combined texture. |
| drawBoundTexture(to, x, y, width, height); |
| |
| // Disable TEXTURE1. |
| gl.glDisable(GL11.GL_TEXTURE_2D); |
| // Switch back to the default texture unit. |
| gl.glActiveTexture(GL11.GL_TEXTURE0); |
| } |
| |
| // TODO: the code only work for 2D should get fixed for 3D or removed |
| private static final int MSKEW_X = 4; |
| private static final int MSKEW_Y = 1; |
| private static final int MSCALE_X = 0; |
| private static final int MSCALE_Y = 5; |
| |
| private static boolean isMatrixRotatedOrFlipped(float matrix[]) { |
| final float eps = 1e-5f; |
| return Math.abs(matrix[MSKEW_X]) > eps |
| || Math.abs(matrix[MSKEW_Y]) > eps |
| || matrix[MSCALE_X] < -eps |
| || matrix[MSCALE_Y] > eps; |
| } |
| |
| public BasicTexture copyTexture(int x, int y, int width, int height) { |
| |
| if (isMatrixRotatedOrFlipped(mMatrixValues)) { |
| throw new IllegalArgumentException("cannot support rotated matrix"); |
| } |
| float points[] = mapPoints(mMatrixValues, x, y + height, x + width, y); |
| x = (int) points[0]; |
| y = (int) points[1]; |
| width = (int) points[2] - x; |
| height = (int) points[3] - y; |
| |
| GL11 gl = mGL; |
| |
| RawTexture texture = RawTexture.newInstance(this); |
| gl.glBindTexture(GL11.GL_TEXTURE_2D, texture.getId()); |
| texture.setSize(width, height); |
| |
| int[] cropRect = {0, 0, width, height}; |
| gl.glTexParameteriv(GL11.GL_TEXTURE_2D, |
| GL11Ext.GL_TEXTURE_CROP_RECT_OES, cropRect, 0); |
| gl.glTexParameteri(GL11.GL_TEXTURE_2D, |
| GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP_TO_EDGE); |
| gl.glTexParameteri(GL11.GL_TEXTURE_2D, |
| GL11.GL_TEXTURE_WRAP_T, GL11.GL_CLAMP_TO_EDGE); |
| gl.glTexParameterf(GL11.GL_TEXTURE_2D, |
| GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR); |
| gl.glTexParameterf(GL11.GL_TEXTURE_2D, |
| GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR); |
| gl.glCopyTexImage2D(GL11.GL_TEXTURE_2D, 0, |
| GL11.GL_RGB, x, y, texture.getTextureWidth(), |
| texture.getTextureHeight(), 0); |
| |
| return texture; |
| } |
| |
| private static class GLState { |
| |
| private final GL11 mGL; |
| |
| private int mTexEnvMode = GL11.GL_REPLACE; |
| private float mTextureAlpha = 1.0f; |
| private boolean mTexture2DEnabled = true; |
| private boolean mBlendEnabled = true; |
| |
| public GLState(GL11 gl) { |
| mGL = gl; |
| |
| // Disable unused state |
| gl.glDisable(GL11.GL_LIGHTING); |
| |
| // Enable used features |
| gl.glEnable(GL11.GL_DITHER); |
| gl.glEnable(GL11.GL_SCISSOR_TEST); |
| |
| gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); |
| gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); |
| gl.glEnable(GL11.GL_TEXTURE_2D); |
| |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, |
| GL11.GL_TEXTURE_ENV_MODE, GL11.GL_REPLACE); |
| |
| // Set the background color |
| gl.glClearColor(0f, 0f, 0f, 0f); |
| gl.glClearStencil(0); |
| |
| gl.glEnable(GL11.GL_BLEND); |
| gl.glBlendFunc(GL11.GL_ONE, GL11.GL_ONE_MINUS_SRC_ALPHA); |
| } |
| |
| public void setTexEnvMode(int mode) { |
| if (mTexEnvMode == mode) return; |
| mTexEnvMode = mode; |
| mGL.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_MODE, mode); |
| } |
| |
| public void setTextureAlpha(float alpha) { |
| if (mTextureAlpha == alpha) return; |
| mTextureAlpha = alpha; |
| if (alpha >= OPAQUE_ALPHA) { |
| // The alpha is need for those texture without alpha channel |
| mGL.glColor4f(1, 1, 1, 1); |
| setTexEnvMode(GL11.GL_REPLACE); |
| } else { |
| mGL.glColor4f(alpha, alpha, alpha, alpha); |
| setTexEnvMode(GL11.GL_MODULATE); |
| } |
| } |
| |
| public void setColorMode(int color, float alpha) { |
| setBlendEnabled(!Utils.isOpaque(color) || alpha < OPAQUE_ALPHA); |
| |
| // Set mTextureAlpha to an invalid value, so that it will reset |
| // again in setTextureAlpha(float) later. |
| mTextureAlpha = -1.0f; |
| |
| setTexture2DEnabled(false); |
| |
| float prealpha = (color >>> 24) * alpha * 65535f / 255f / 255f; |
| mGL.glColor4x( |
| Math.round(((color >> 16) & 0xFF) * prealpha), |
| Math.round(((color >> 8) & 0xFF) * prealpha), |
| Math.round((color & 0xFF) * prealpha), |
| Math.round(255 * prealpha)); |
| } |
| |
| public void setTexture2DEnabled(boolean enabled) { |
| if (mTexture2DEnabled == enabled) return; |
| mTexture2DEnabled = enabled; |
| if (enabled) { |
| mGL.glEnable(GL11.GL_TEXTURE_2D); |
| } else { |
| mGL.glDisable(GL11.GL_TEXTURE_2D); |
| } |
| } |
| |
| public void setBlendEnabled(boolean enabled) { |
| if (mBlendEnabled == enabled) return; |
| mBlendEnabled = enabled; |
| if (enabled) { |
| mGL.glEnable(GL11.GL_BLEND); |
| } else { |
| mGL.glDisable(GL11.GL_BLEND); |
| } |
| } |
| } |
| |
| public GL11 getGLInstance() { |
| return mGL; |
| } |
| |
| public void setCurrentAnimationTimeMillis(long time) { |
| Utils.Assert(time >= 0); |
| mAnimationTime = time; |
| } |
| |
| public void clearBuffer() { |
| mGL.glClear(GL10.GL_COLOR_BUFFER_BIT); |
| } |
| |
| private void setTextureCoords(RectF source) { |
| setTextureCoords(source.left, source.top, source.right, source.bottom); |
| } |
| |
| 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); |
| } |
| |
| // unloadTexture and deleteBuffer can be called from the finalizer thread, |
| // so we synchronized on the mUnboundTextures object. |
| public boolean unloadTexture(BasicTexture t) { |
| synchronized (mUnboundTextures) { |
| if (!t.isLoaded(this)) return false; |
| mUnboundTextures.add(t.mId); |
| return true; |
| } |
| } |
| |
| public void deleteBuffer(int bufferId) { |
| synchronized (mUnboundTextures) { |
| mDeleteBuffers.add(bufferId); |
| } |
| } |
| |
| public void deleteRecycledResources() { |
| synchronized (mUnboundTextures) { |
| IntArray ids = mUnboundTextures; |
| if (ids.size() > 0) { |
| mGL.glDeleteTextures(ids.size(), ids.getInternalArray(), 0); |
| ids.clear(); |
| } |
| |
| ids = mDeleteBuffers; |
| if (ids.size() > 0) { |
| mGL.glDeleteBuffers(ids.size(), ids.getInternalArray(), 0); |
| ids.clear(); |
| } |
| } |
| } |
| |
| public int save() { |
| return save(SAVE_FLAG_ALL); |
| } |
| |
| public int save(int saveFlags) { |
| ConfigState config = obtainRestoreConfig(); |
| |
| if ((saveFlags & SAVE_FLAG_ALPHA) != 0) { |
| config.mAlpha = mAlpha; |
| } else { |
| config.mAlpha = -1; |
| } |
| |
| if ((saveFlags & SAVE_FLAG_CLIP) != 0) { |
| config.mRect.set(mClipRect); |
| } else { |
| config.mRect.left = Integer.MAX_VALUE; |
| } |
| |
| if ((saveFlags & SAVE_FLAG_MATRIX) != 0) { |
| System.arraycopy(mMatrixValues, 0, config.mMatrix, 0, 16); |
| } else { |
| config.mMatrix[0] = Float.NEGATIVE_INFINITY; |
| } |
| |
| mRestoreStack.push(config); |
| return mRestoreStack.size() - 1; |
| } |
| |
| public void restore() { |
| if (mRestoreStack.isEmpty()) throw new IllegalStateException(); |
| ConfigState config = mRestoreStack.pop(); |
| config.restore(this); |
| freeRestoreConfig(config); |
| } |
| |
| private void freeRestoreConfig(ConfigState action) { |
| action.mNextFree = mRecycledRestoreAction; |
| mRecycledRestoreAction = action; |
| } |
| |
| private ConfigState obtainRestoreConfig() { |
| if (mRecycledRestoreAction != null) { |
| ConfigState result = mRecycledRestoreAction; |
| mRecycledRestoreAction = result.mNextFree; |
| return result; |
| } |
| return new ConfigState(); |
| } |
| |
| private static class ConfigState { |
| float mAlpha; |
| Rect mRect = new Rect(); |
| float mMatrix[] = new float[16]; |
| ConfigState mNextFree; |
| |
| public void restore(GLCanvasImp canvas) { |
| if (mAlpha >= 0) canvas.setAlpha(mAlpha); |
| if (mRect.left != Integer.MAX_VALUE) { |
| Rect rect = mRect; |
| canvas.mClipRect.set(rect); |
| canvas.mGL.glScissor( |
| rect.left, rect.top, rect.width(), rect.height()); |
| } |
| if (mMatrix[0] != Float.NEGATIVE_INFINITY) { |
| System.arraycopy(mMatrix, 0, canvas.mMatrixValues, 0, 16); |
| } |
| } |
| } |
| |
| public void dumpStatisticsAndClear() { |
| String line = String.format( |
| "MESH:%d, TEX_OES:%d, TEX_RECT:%d, FILL_RECT:%d, LINE:%d", |
| mCountDrawMesh, mCountTextureRect, mCountTextureOES, |
| mCountFillRect, mCountDrawLine); |
| mCountDrawMesh = 0; |
| mCountTextureRect = 0; |
| mCountTextureOES = 0; |
| mCountFillRect = 0; |
| mCountDrawLine = 0; |
| Log.v(TAG, line); |
| } |
| |
| private void saveTransform() { |
| System.arraycopy(mMatrixValues, 0, mTempMatrix, 0, 16); |
| } |
| |
| private void restoreTransform() { |
| System.arraycopy(mTempMatrix, 0, mMatrixValues, 0, 16); |
| } |
| } |
