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Diffstat (limited to 'tests/src/com/android/gallery3d/glrenderer/GLCanvasTest.java')
| -rw-r--r-- | tests/src/com/android/gallery3d/glrenderer/GLCanvasTest.java | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/tests/src/com/android/gallery3d/glrenderer/GLCanvasTest.java b/tests/src/com/android/gallery3d/glrenderer/GLCanvasTest.java new file mode 100644 index 000000000..416c11414 --- /dev/null +++ b/tests/src/com/android/gallery3d/glrenderer/GLCanvasTest.java @@ -0,0 +1,386 @@ +/* + * 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.glrenderer; + +import android.test.suitebuilder.annotation.SmallTest; +import android.util.Log; + +import junit.framework.TestCase; + +import java.util.Arrays; + +import javax.microedition.khronos.opengles.GL10; +import javax.microedition.khronos.opengles.GL11; + +public class GLCanvasTest extends TestCase { + private static final String TAG = "GLCanvasTest"; + + private static GLPaint newColorPaint(int color) { + GLPaint paint = new GLPaint(); + paint.setColor(color); + return paint; + } + + @SmallTest + public void testSetSize() { + GL11 glStub = new GLStub(); + GLCanvas canvas = new GLES11Canvas(glStub); + canvas.setSize(100, 200); + canvas.setSize(1000, 100); + try { + canvas.setSize(-1, 100); + fail(); + } catch (Throwable ex) { + // expected. + } + } + + @SmallTest + public void testClearBuffer() { + new ClearBufferTest().run(); + } + + private static class ClearBufferTest extends GLMock { + void run() { + GLCanvas canvas = new GLES11Canvas(this); + assertEquals(0, mGLClearCalled); + canvas.clearBuffer(); + assertEquals(GL10.GL_COLOR_BUFFER_BIT, mGLClearMask); + assertEquals(1, mGLClearCalled); + } + } + + @SmallTest + public void testSetColor() { + new SetColorTest().run(); + } + + // This test assumes we use pre-multipled alpha blending and should + // set the blending function and color correctly. + private static class SetColorTest extends GLMock { + void run() { + int[] testColors = new int[] { + 0, 0xFFFFFFFF, 0xFF000000, 0x00FFFFFF, 0x80FF8001, + 0x7F010101, 0xFEFEFDFC, 0x017F8081, 0x027F8081, 0x2ADE4C4D + }; + + GLCanvas canvas = new GLES11Canvas(this); + canvas.setSize(400, 300); + // Test one color to make sure blend function is set. + assertEquals(0, mGLColorCalled); + canvas.drawLine(0, 0, 1, 1, newColorPaint(0x7F804020)); + assertEquals(1, mGLColorCalled); + assertEquals(0x7F402010, mGLColor); + assertPremultipliedBlending(this); + + // Test other colors to make sure premultiplication is right + for (int c : testColors) { + float a = (c >>> 24) / 255f; + float r = ((c >> 16) & 0xff) / 255f; + float g = ((c >> 8) & 0xff) / 255f; + float b = (c & 0xff) / 255f; + int pre = makeColor4f(a * r, a * g, a * b, a); + + mGLColorCalled = 0; + canvas.drawLine(0, 0, 1, 1, newColorPaint(c)); + assertEquals(1, mGLColorCalled); + assertEquals(pre, mGLColor); + } + } + } + + @SmallTest + public void testSetGetMultiplyAlpha() { + GL11 glStub = new GLStub(); + GLCanvas canvas = new GLES11Canvas(glStub); + + canvas.setAlpha(1f); + assertEquals(1f, canvas.getAlpha()); + + canvas.setAlpha(0f); + assertEquals(0f, canvas.getAlpha()); + + canvas.setAlpha(0.5f); + assertEquals(0.5f, canvas.getAlpha()); + + canvas.multiplyAlpha(0.5f); + assertEquals(0.25f, canvas.getAlpha()); + + canvas.multiplyAlpha(0f); + assertEquals(0f, canvas.getAlpha()); + + try { + canvas.setAlpha(-0.01f); + fail(); + } catch (Throwable ex) { + // expected. + } + + try { + canvas.setAlpha(1.01f); + fail(); + } catch (Throwable ex) { + // expected. + } + } + + @SmallTest + public void testAlpha() { + new AlphaTest().run(); + } + + private static class AlphaTest extends GLMock { + void run() { + GLCanvas canvas = new GLES11Canvas(this); + canvas.setSize(400, 300); + + assertEquals(0, mGLColorCalled); + canvas.setAlpha(0.48f); + canvas.drawLine(0, 0, 1, 1, newColorPaint(0xFF804020)); + assertPremultipliedBlending(this); + assertEquals(1, mGLColorCalled); + assertEquals(0x7A3D1F0F, mGLColor); + } + } + + @SmallTest + public void testDrawLine() { + new DrawLineTest().run(); + } + + // This test assumes the drawLine() function use glDrawArrays() with + // GL_LINE_STRIP mode to draw the line and the input coordinates are used + // directly. + private static class DrawLineTest extends GLMock { + private int mDrawArrayCalled = 0; + private final int[] mResult = new int[4]; + + @Override + public void glDrawArrays(int mode, int first, int count) { + assertNotNull(mGLVertexPointer); + assertEquals(GL10.GL_LINE_STRIP, mode); + assertEquals(2, count); + mGLVertexPointer.bindByteBuffer(); + + double[] coord = new double[4]; + mGLVertexPointer.getArrayElement(first, coord); + mResult[0] = (int) coord[0]; + mResult[1] = (int) coord[1]; + mGLVertexPointer.getArrayElement(first + 1, coord); + mResult[2] = (int) coord[0]; + mResult[3] = (int) coord[1]; + mDrawArrayCalled++; + } + + void run() { + GLCanvas canvas = new GLES11Canvas(this); + canvas.setSize(400, 300); + canvas.drawLine(2, 7, 1, 8, newColorPaint(0) /* color */); + assertTrue(mGLVertexArrayEnabled); + assertEquals(1, mDrawArrayCalled); + + Log.v(TAG, "result = " + Arrays.toString(mResult)); + int[] answer = new int[] {2, 7, 1, 8}; + for (int i = 0; i < answer.length; i++) { + assertEquals(answer[i], mResult[i]); + } + } + } + + @SmallTest + public void testFillRect() { + new FillRectTest().run(); + } + + // This test assumes the drawLine() function use glDrawArrays() with + // GL_TRIANGLE_STRIP mode to draw the line and the input coordinates + // are used directly. + private static class FillRectTest extends GLMock { + private int mDrawArrayCalled = 0; + private final int[] mResult = new int[8]; + + @Override + public void glDrawArrays(int mode, int first, int count) { + assertNotNull(mGLVertexPointer); + assertEquals(GL10.GL_TRIANGLE_STRIP, mode); + assertEquals(4, count); + mGLVertexPointer.bindByteBuffer(); + + double[] coord = new double[4]; + for (int i = 0; i < 4; i++) { + mGLVertexPointer.getArrayElement(first + i, coord); + mResult[i * 2 + 0] = (int) coord[0]; + mResult[i * 2 + 1] = (int) coord[1]; + } + + mDrawArrayCalled++; + } + + void run() { + GLCanvas canvas = new GLES11Canvas(this); + canvas.setSize(400, 300); + canvas.fillRect(2, 7, 1, 8, 0 /* color */); + assertTrue(mGLVertexArrayEnabled); + assertEquals(1, mDrawArrayCalled); + Log.v(TAG, "result = " + Arrays.toString(mResult)); + + // These are the four vertics that should be used. + int[] answer = new int[] { + 2, 7, + 3, 7, + 3, 15, + 2, 15}; + int count[] = new int[4]; + + // Count the number of appearances for each vertex. + for (int i = 0; i < 4; i++) { + for (int j = 0; j < 4; j++) { + if (answer[i * 2] == mResult[j * 2] && + answer[i * 2 + 1] == mResult[j * 2 + 1]) { + count[i]++; + } + } + } + + // Each vertex should appear exactly once. + for (int i = 0; i < 4; i++) { + assertEquals(1, count[i]); + } + } + } + + @SmallTest + public void testTransform() { + new TransformTest().run(); + } + + // This test assumes glLoadMatrixf is used to load the model view matrix, + // and glOrthof is used to load the projection matrix. + // + // The projection matrix is set to an orthogonal projection which is the + // inverse of viewport transform. So the model view matrix maps input + // directly to screen coordinates (default no scaling, and the y-axis is + // reversed). + // + // The matrix here are all listed in column major order. + // + private static class TransformTest extends GLMock { + private final float[] mModelViewMatrixUsed = new float[16]; + private final float[] mProjectionMatrixUsed = new float[16]; + + @Override + public void glDrawArrays(int mode, int first, int count) { + copy(mModelViewMatrixUsed, mGLModelViewMatrix); + copy(mProjectionMatrixUsed, mGLProjectionMatrix); + } + + private void copy(float[] dest, float[] src) { + System.arraycopy(src, 0, dest, 0, 16); + } + + void run() { + GLCanvas canvas = new GLES11Canvas(this); + canvas.setSize(40, 50); + int color = 0; + + // Initial matrix + canvas.drawLine(0, 0, 1, 1, newColorPaint(color)); + assertMatrixEq(new float[] { + 1, 0, 0, 0, + 0, -1, 0, 0, + 0, 0, 1, 0, + 0, 50, 0, 1 + }, mModelViewMatrixUsed); + + assertMatrixEq(new float[] { + 2f / 40, 0, 0, 0, + 0, 2f / 50, 0, 0, + 0, 0, -1, 0, + -1, -1, 0, 1 + }, mProjectionMatrixUsed); + + // Translation + canvas.translate(3, 4, 5); + canvas.drawLine(0, 0, 1, 1, newColorPaint(color)); + assertMatrixEq(new float[] { + 1, 0, 0, 0, + 0, -1, 0, 0, + 0, 0, 1, 0, + 3, 46, 5, 1 + }, mModelViewMatrixUsed); + canvas.save(); + + // Scaling + canvas.scale(0.7f, 0.6f, 0.5f); + canvas.drawLine(0, 0, 1, 1, newColorPaint(color)); + assertMatrixEq(new float[] { + 0.7f, 0, 0, 0, + 0, -0.6f, 0, 0, + 0, 0, 0.5f, 0, + 3, 46, 5, 1 + }, mModelViewMatrixUsed); + + // Rotation + canvas.rotate(90, 0, 0, 1); + canvas.drawLine(0, 0, 1, 1, newColorPaint(color)); + assertMatrixEq(new float[] { + 0, -0.6f, 0, 0, + -0.7f, 0, 0, 0, + 0, 0, 0.5f, 0, + 3, 46, 5, 1 + }, mModelViewMatrixUsed); + canvas.restore(); + + // After restoring to the point just after translation, + // do rotation again. + canvas.rotate(180, 1, 0, 0); + canvas.drawLine(0, 0, 1, 1, newColorPaint(color)); + assertMatrixEq(new float[] { + 1, 0, 0, 0, + 0, 1, 0, 0, + 0, 0, -1, 0, + 3, 46, 5, 1 + }, mModelViewMatrixUsed); + } + } + + private static void assertPremultipliedBlending(GLMock mock) { + assertTrue(mock.mGLBlendFuncCalled > 0); + assertTrue(mock.mGLBlendEnabled); + assertEquals(GL11.GL_ONE, mock.mGLBlendFuncSFactor); + assertEquals(GL11.GL_ONE_MINUS_SRC_ALPHA, mock.mGLBlendFuncDFactor); + } + + private static void assertMatrixEq(float[] expected, float[] actual) { + try { + for (int i = 0; i < 16; i++) { + assertFloatEq(expected[i], actual[i]); + } + } catch (Throwable t) { + Log.v(TAG, "expected = " + Arrays.toString(expected) + + ", actual = " + Arrays.toString(actual)); + fail(); + } + } + + public static void assertFloatEq(float expected, float actual) { + if (Math.abs(actual - expected) > 1e-6) { + Log.v(TAG, "expected: " + expected + ", actual: " + actual); + fail(); + } + } +} |