diff options
Diffstat (limited to 'src/com/android/gallery3d/ui/GLCanvasImpl.java')
| -rw-r--r-- | src/com/android/gallery3d/ui/GLCanvasImpl.java | 107 |
1 files changed, 96 insertions, 11 deletions
diff --git a/src/com/android/gallery3d/ui/GLCanvasImpl.java b/src/com/android/gallery3d/ui/GLCanvasImpl.java index 61238519b..1efe5af4e 100644 --- a/src/com/android/gallery3d/ui/GLCanvasImpl.java +++ b/src/com/android/gallery3d/ui/GLCanvasImpl.java @@ -16,7 +16,6 @@ package com.android.gallery3d.ui; -import android.graphics.Rect; import android.graphics.RectF; import android.opengl.GLU; import android.opengl.Matrix; @@ -32,6 +31,7 @@ import java.util.ArrayList; import javax.microedition.khronos.opengles.GL10; import javax.microedition.khronos.opengles.GL11; import javax.microedition.khronos.opengles.GL11Ext; +import javax.microedition.khronos.opengles.GL11ExtensionPack; public class GLCanvasImpl implements GLCanvas { @SuppressWarnings("unused") @@ -61,10 +61,10 @@ public class GLCanvasImpl implements GLCanvas { private int mBoxCoords; private final GLState mGLState; + private final ArrayList<RawTexture> mTargetStack = new ArrayList<RawTexture>(); private float mAlpha; - private final ArrayList<ConfigState> mRestoreStack = - new ArrayList<ConfigState>(); + private final ArrayList<ConfigState> mRestoreStack = new ArrayList<ConfigState>(); private ConfigState mRecycledRestoreAction; private final RectF mDrawTextureSourceRect = new RectF(); @@ -72,8 +72,12 @@ public class GLCanvasImpl implements GLCanvas { private final float[] mTempMatrix = new float[32]; private final IntArray mUnboundTextures = new IntArray(); private final IntArray mDeleteBuffers = new IntArray(); - private int mHeight; + private int mScreenWidth; + private int mScreenHeight; private boolean mBlendEnabled = true; + private int mFrameBuffer[] = new int[1]; + + private RawTexture mTargetTexture; // Drawing statistics int mCountDrawLine; @@ -90,7 +94,12 @@ public class GLCanvasImpl implements GLCanvas { public void setSize(int width, int height) { Utils.assertTrue(width >= 0 && height >= 0); - mHeight = height; + + if (mTargetTexture == null) { + mScreenWidth = width; + mScreenHeight = height; + } + mAlpha = 1.0f; GL11 gl = mGL; gl.glViewport(0, 0, width, height); @@ -100,11 +109,14 @@ public class GLCanvasImpl implements GLCanvas { gl.glMatrixMode(GL11.GL_MODELVIEW); gl.glLoadIdentity(); - float matrix[] = mMatrixValues; + float matrix[] = mMatrixValues; Matrix.setIdentityM(matrix, 0); - Matrix.translateM(matrix, 0, 0, mHeight, 0); - Matrix.scaleM(matrix, 0, 1, -1, 1); + // 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); + } } public void setAlpha(float alpha) { @@ -151,8 +163,7 @@ public class GLCanvasImpl implements GLCanvas { gl.glClientActiveTexture(GL11.GL_TEXTURE0); gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); - // mMatrixValues will be initialized in setSize() - mAlpha = 1.0f; + // mMatrixValues and mAlpha will be initialized in setSize() } public void drawRect(float x, float y, float width, float height, GLPaint paint) { @@ -724,7 +735,6 @@ public class GLCanvasImpl implements GLCanvas { private static class ConfigState { float mAlpha; - Rect mRect = new Rect(); float mMatrix[] = new float[16]; ConfigState mNextFree; @@ -756,4 +766,79 @@ public class GLCanvasImpl implements GLCanvas { private void restoreTransform() { System.arraycopy(mTempMatrix, 0, mMatrixValues, 0, 16); } + + private void setRenderTarget(RawTexture texture) { + GL11ExtensionPack gl11ep = (GL11ExtensionPack) mGL; + + if (mTargetTexture == null && texture != null) { + GLId.glGenBuffers(1, mFrameBuffer, 0); + gl11ep.glBindFramebufferOES( + GL11ExtensionPack.GL_FRAMEBUFFER_OES, mFrameBuffer[0]); + } + if (mTargetTexture != null && texture == null) { + gl11ep.glBindFramebufferOES(GL11ExtensionPack.GL_FRAMEBUFFER_OES, 0); + gl11ep.glDeleteFramebuffersOES(1, mFrameBuffer, 0); + } + + mTargetTexture = texture; + if (texture == null) { + setSize(mScreenWidth, mScreenHeight); + } else { + setSize(texture.getWidth(), texture.getHeight()); + + if (!texture.isLoaded(this)) texture.prepare(this); + + gl11ep.glFramebufferTexture2DOES( + GL11ExtensionPack.GL_FRAMEBUFFER_OES, + GL11ExtensionPack.GL_COLOR_ATTACHMENT0_OES, + GL11.GL_TEXTURE_2D, texture.getId(), 0); + + checkFramebufferStatus(gl11ep); + } + } + + @Override + public void endRenderTarget() { + RawTexture texture = mTargetStack.remove(mTargetStack.size() - 1); + setRenderTarget(texture); + restore(); // restore matrix and alpha + } + + @Override + public void beginRenderTarget(RawTexture texture) { + save(); // save matrix and alpha + mTargetStack.add(mTargetTexture); + setRenderTarget(texture); + } + + private static void checkFramebufferStatus(GL11ExtensionPack gl11ep) { + int status = gl11ep.glCheckFramebufferStatusOES(GL11ExtensionPack.GL_FRAMEBUFFER_OES); + if (status != GL11ExtensionPack.GL_FRAMEBUFFER_COMPLETE_OES) { + String msg = ""; + switch (status) { + case GL11ExtensionPack.GL_FRAMEBUFFER_INCOMPLETE_FORMATS_OES: + msg = "FRAMEBUFFER_FORMATS"; + break; + case GL11ExtensionPack.GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES: + msg = "FRAMEBUFFER_ATTACHMENT"; + break; + case GL11ExtensionPack.GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_OES: + msg = "FRAMEBUFFER_MISSING_ATTACHMENT"; + break; + case GL11ExtensionPack.GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_OES: + msg = "FRAMEBUFFER_DRAW_BUFFER"; + break; + case GL11ExtensionPack.GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_OES: + msg = "FRAMEBUFFER_READ_BUFFER"; + break; + case GL11ExtensionPack.GL_FRAMEBUFFER_UNSUPPORTED_OES: + msg = "FRAMEBUFFER_UNSUPPORTED"; + break; + case GL11ExtensionPack.GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_OES: + msg = "FRAMEBUFFER_INCOMPLETE_DIMENSIONS"; + break; + } + throw new RuntimeException(msg + ":" + Integer.toHexString(status)); + } + } } |