安卓的OpenGL ES 1.1白盒材质 [英] Android OpenGL ES 1.1 white box textures

问题描述

我有一个问题，即从资源的纹理变得光是白色。 这个问题似乎只出现在手机上（的Droid-X是肯定的），但它工作得很好，在模拟器上。 我已经好几天研究了这个问题，并尝试了许多事情。

纹理POT从8x8到128x128的
纹理已经在RES /绘制，RES /绘制-nodpi和RES /生
在清单文件试图与和没有这样的：

I am having an issue where textures from the resources become just white. The issue only seems to occur on phones (Droid-X for sure), but it works just fine on the emulator. I have researched this issue for days and tried so many things.

Textures are POT ranging from 8x8 to 128x128
Textures have been in res/drawable, res/drawable-nodpi and res/raw
Tried with and without this in the manifest file:

<supports-screens android:anyDensity="true" />

我在这个完全丧失。

I am at a complete loss on this.

下面是code，我使用
GL是GL10和GL11是GL11

Here is the code I am using
gl is GL10 and gl11 is GL11

During onSurfaceCreated
gl.glEnable(GL10.GL_TEXTURE_2D);
gl.glEnable(GL10.GL_BLEND);
gl.glDisable(GL10.GL_DEPTH_TEST);
gl.glDisable(GL10.GL_DITHER);
gl.glDisable(GL10.GL_LIGHTING);

gl.glShadeModel(GL10.GL_FLAT);
gl.glClearColor(0.00f, 0.00f, 0.00f, 1.00f);
gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_DST_ALPHA);
gl.glOrthof(-1, 1, -1, 1, -1, 1);
gl.glColor4f(0.5f, 0.5f, 0.5f, 0.5f);

gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_NEAREST);

gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_CLAMP_TO_EDGE);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_CLAMP_TO_EDGE);

gl.glTexEnvf(GL10.GL_TEXTURE_ENV, GL10.GL_TEXTURE_ENV_MODE, GL10.GL_REPLACE);
gl.glFrontFace(GL10.GL_CCW);

gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);

在onSurfaceChanged

During onSurfaceChanged

gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glViewport(0, 0, width, height);

生成VBO：

Generating the VBO:

public final float vertices[] = { 
    -1.0f, -1.0f, 1.0f,
    1.0f, -1.0f, 1.0f,
    -1.0f, 1.0f, 1.0f,
    1.0f, 1.0f, 1.0f
};
public float textureCoord[] = { 
    0.0f, 0.0f,
    0.0f, 1.0f,
    1.0f, 0.0f,
    1.0f, 1.0f
};
public final byte indices[] = { 
    0, 1, 3,
    0, 3, 2 
};
verticesBuffer = ByteBuffer.allocateDirect(vertices.length * 
    Constants.FLOAT_SIZE).order(ByteOrder.nativeOrder()).asFloatBuffer();
textureCoordBuffer = ByteBuffer.allocateDirect(textureCoord.length * 
    Constants.FLOAT_SIZE).order(ByteOrder.nativeOrder()).asFloatBuffer();
indicesBuffer = ByteBuffer.allocateDirect(indices.length).order(ByteOrder.nativeOrder());

// fill buffers
verticesBuffer.put(vertices);
textureCoordBuffer.put(textureCoord);
indicesBuffer.put(indices);

// set pointer positions
verticesBuffer.position(0);
textureCoordBuffer.position(0);
indicesBuffer.position(0);

// temp buffer array
int[] buffer = new int[1];

// VERTICES BUFFER.
gl11.glGenBuffers(1, buffer, 0);
verticesBufferIndex = buffer[0];
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, verticesBufferIndex);
final int vertexSize = verticesBuffer.capacity() * Constants.FLOAT_SIZE;
gl11.glBufferData(GL11.GL_ARRAY_BUFFER, vertexSize, verticesBuffer, GL11.GL_STATIC_DRAW);

// TEXTURE COORD BUUFER
gl11.glGenBuffers(1, buffer, 0);
textureCoordBufferIndex = buffer[0];
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, textureCoordBufferIndex);
final int texCoordSize = textureCoordBuffer.capacity() * Constants.FLOAT_SIZE;
gl11.glBufferData(GL11.GL_ARRAY_BUFFER, texCoordSize, textureCoordBuffer, GL11.GL_STATIC_DRAW);

// clear buffer id
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, 0);

// Unbind the array buffer.
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, 0);
gl11.glGenBuffers(1, buffer, 0);

// INDICES BUFFER
indicesBufferIndex = buffer[0];
gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, indicesBufferIndex);
final int indexSize = indicesBuffer.capacity();
gl11.glBufferData(GL11.GL_ELEMENT_ARRAY_BUFFER, indexSize, indicesBuffer, GL11.GL_STATIC_DRAW);

// Unbind the element array buffer.
gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, 0);

gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, verticesBufferIndex);
gl11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0);
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, textureCoordBufferIndex);
gl11.glTexCoordPointer(2, GL11.GL_FLOAT, 0, 0);
gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, indicesBufferIndex);

BitmapFactory.Options sBitmapOptions = new BitmapFactory.Options();
sBitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_4444;

// many of these calls :
Bitmap bitmap = BitmapFactory.decodeStream(resources.openRawResource(resourceID), null, sBitmapOptions);
int[] textures = new int[1];
gl.glGenTextures(1, textures, 0);
gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
mCropWorkspace[0] = 0;
mCropWorkspace[1] = bitmap.getHeight();
mCropWorkspace[2] = bitmap.getWidth();
mCropWorkspace[3] = -bitmap.getHeight();
((GL11) gl).glTexParameteriv(GL10.GL_TEXTURE_2D, 
GL11Ext.GL_TEXTURE_CROP_RECT_OES, mCropWorkspace, 0);
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
bitmap.recycle();
return texture[0]; // which gets stored into textureID for later

在onDrawFrame

During onDrawFrame

gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

// and many of these
gl11.glPushMatrix();
// transfomations
gl11.glBindTexture(GL11.GL_TEXTURE_2D, textureID);
gl11.glDrawElements(GL10.GL_TRIANGLES, indicesCount, GL10.GL_UNSIGNED_BYTE, 0);
gl11.glPopMatrix();

对不起，所有的code，但我认为一切都在那里。
谢谢你，
请问

Sorry for all the code but I think everything is there.
Thank you,
Will

推荐答案

您必须启用顶点数组和纹理COORDS阵列和拨打任何电话之前绑定你的缓存索引你的 glDraw ...（）的功能。

You must enable vertex array and texture coords array and bind your buffer indexes before making any calls to your glDraw...() function.

在 glBindTexture（）在 onDrawFrame（），把这样的：

gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);

GL11 gl11 = (GL11) gl;

gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, verticesBufferIndex);
gl11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0);

gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, textureCoordBufferIndex);
gl11.glTexCoordPointer(2, GL11.GL_FLOAT, 0, 0); 
gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, indicesBufferIndex);

// Draw...

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