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Clean up the GL window scaling routines.

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This commit is contained in:
James Sanford 2012-10-17 22:27:45 -07:00
parent 7079970b79
commit 10c52151f7
2 changed files with 37 additions and 34 deletions
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8
src/com/froop/app/kegs/BitmapSize.java
View File

@ -51,6 +51,14 @@ class BitmapSize {
return mCropped;
}
public int getCropPixelCount() {
if (doCropBorder()) {
return 30; // pixels dropped from the *bottom*
} else {
return 0;
}
}
public boolean isScaled() {
return (mScaleFactorX != 1.0f || mScaleFactorY != 1.0f);
}

63
src/com/froop/app/kegs/KegsRenderer.java
View File

@ -14,9 +14,6 @@ import javax.microedition.khronos.opengles.GL10;
import android.opengl.GLUtils;
import android.opengl.GLSurfaceView;
// FIXME: Before use, make sure JNI locks bitmap at beginning
// (instead of per frame)
class KegsRenderer implements GLSurfaceView.Renderer {
private Bitmap mBitmap;
private static final int mTexWidth = 1024;
@ -50,11 +47,12 @@ class KegsRenderer implements GLSurfaceView.Renderer {
// Connecting order (draws a square)
static final short[] mIndices = { 0, 1, 2, 0, 2, 3 };
// Oy.
public int mWidth = 0;
public int mHeight = 0;
public float mScaleX = 1.0f;
public float mScaleY = 1.0f;
private int mWidth = 0;
private int mHeight = 0;
private float mScaleX = 1.0f;
private float mScaleY = 1.0f;
private float mCropBorder = 0.0f;
private boolean mScaled = false;
private boolean mSizeChange = false;
private int mTexId;
@ -85,23 +83,27 @@ class KegsRenderer implements GLSurfaceView.Renderer {
mTextureBuffer.position(0);
}
public void onSurfaceChanged(GL10 gl, int width, int height) {
gl.glViewport(0, 0, width, height);
}
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
private void setupOrtho(GL10 gl) {
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
// 50.0f is 512-(400+32+30) (the distance from the bottom of the texture to our actual bitmap)
float cropBorder = 50.0f;
float fudge = 0.0f;
if (mWidth > 1024) { // hack
cropBorder += 30.0f;
fudge = 14.0f;
if (mCropBorder > 0.0f) {
cropBorder += mCropBorder;
fudge = 14.0f; // Bug workaround to view the entire image better...
}
gl.glOrthof(0.0f, (float)mWidth, cropBorder, mHeight+cropBorder+fudge, 0.0f, 1.0f);
gl.glOrthof(0.0f, (float)mWidth, cropBorder, mHeight + cropBorder + fudge, 0.0f, 1.0f);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
}
public void onSurfaceChanged(GL10 gl, int width, int height) {
gl.glViewport(0, 0, width, height);
}
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
setupOrtho(gl);
// gl.glShadeModel(GL10.GL_FLAT);
gl.glEnable(gl.GL_TEXTURE_2D);
@ -159,25 +161,14 @@ class KegsRenderer implements GLSurfaceView.Renderer {
if (mSizeChange) {
mSizeChange = false;
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
// 50.0f is 512-(400+32+30) (the distance from the bottom of the texture to our actual bitmap)
float cropBorder = 50.0f;
float fudge = 0.0f;
if (mWidth > 1024) { // hack
cropBorder += 30.0f;
fudge = 14.0f;
setupOrtho(gl);
}
gl.glOrthof(0.0f, (float)mWidth, cropBorder, mHeight+cropBorder+fudge, 0.0f, 1.0f);
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
}
Bitmap bitmap = mBitmap;
int format = GLUtils.getInternalFormat(bitmap);
int type = GLUtils.getType(bitmap);
// This was just to play around with multiple textures on the GPU,
// it serves no benefit.
int texId = (mTexLast == mTexId) ? mTexId2 : mTexId;
mTexLast = texId;
gl.glBindTexture(gl.GL_TEXTURE_2D, texId);
@ -197,9 +188,9 @@ class KegsRenderer implements GLSurfaceView.Renderer {
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, mVertexBuffer);
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, mTextureBuffer);
gl.glScalef(mTexWidth, mTexHeight, 0.0f);
if (mWidth > 1000) {
// additional scale on top of earlier scale
gl.glScalef(mScaleX, mScaleY, 0.0f); // hack
if (mScaled) {
// Additional scale on top of earlier scale.
gl.glScalef(mScaleX, mScaleY, 0.0f);
}
gl.glDrawElements(GL10.GL_TRIANGLES, mIndices.length, GL10.GL_UNSIGNED_SHORT, mIndexBuffer);
gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
@ -217,10 +208,14 @@ class KegsRenderer implements GLSurfaceView.Renderer {
}
public void updateScreenSize(BitmapSize bitmapSize) {
// There should probably be a lock surrounding updating these.
mWidth = bitmapSize.getViewWidth();
mHeight = bitmapSize.getViewHeight();
mScaleX = bitmapSize.getScaleX();
mScaleY = bitmapSize.getScaleY();
mCropBorder = (float)bitmapSize.getCropPixelCount();
mScaled = bitmapSize.isScaled();
mSizeChange = true;
Log.e("kegs", "screen size " + mWidth + "x" + mHeight + " " + mScaleX + ":" + mScaleY + " crop=" + mCropBorder);
}
}