Modifying BufferStateLayer crop to be within buffer bounds (0bc0915f) · Commits · e / os / android_frameworks_native-old

services/surfaceflinger/BufferStateLayer.cpp

+18 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,8 @@
		#include <private/gui/SyncFeatures.h>
		#include <renderengine/Image.h>

		#include <limits>

		namespace android {

		// clang-format off
		@@ -347,6 +349,22 @@ Rect BufferStateLayer::getDrawingCrop() const {

		if (s.crop.isEmpty() && s.buffer) {
		return s.buffer->getBounds();
		} else if (s.buffer) {
		Rect crop = s.crop;
		crop.left = std::max(crop.left, 0);
		crop.top = std::max(crop.top, 0);
		uint32_t bufferWidth = s.buffer->getWidth();
		uint32_t bufferHeight = s.buffer->getHeight();
		if (bufferHeight <= std::numeric_limits<int32_t>::max() &&
		bufferWidth <= std::numeric_limits<int32_t>::max()) {
		crop.right = std::min(crop.right, static_cast<int32_t>(bufferWidth));
		crop.bottom = std::min(crop.bottom, static_cast<int32_t>(bufferHeight));
		}
		if (!crop.isValid()) {
		// Crop rect is out of bounds, return whole buffer
		return s.buffer->getBounds();
		}
		return crop;
		}
		return s.crop;
		}

services/surfaceflinger/tests/Transaction_test.cpp

+46 −16

Original line number	Diff line number	Diff line
		@@ -1710,22 +1710,52 @@ TEST_F(LayerTransactionTest, SetCropOutOfBounds_BufferQueue) {
		shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
		}

		// TODO (marissaw): change Layer to make crop to be in bounds instead of passing a bad crop to hwc
		// TEST_F(LayerTransactionTest, SetCropOutOfBounds_BufferState) {
		// sp<SurfaceControl> layer;
		// ASSERT_NO_FATAL_FAILURE(
		// layer = createLayer("test", 32, 32, ISurfaceComposerClient::eFXSurfaceBufferState));
		// ASSERT_NO_FATAL_FAILURE(fillBufferStateLayerColor(layer, Color::RED, 32, 32));
		//
		// Transaction()
		// .setCrop(layer, Rect(-128, -64, 128, 64))
		// .setFrame(layer, Rect(0, 0, 32, 32))
		// .apply();
		// auto shot = screenshot();
		// shot->expectColor(Rect(0, 0, 32, 32), Color::RED);
		// shot->expectBorder(Rect(0, 0, 32, 32), Color::BLACK);
		//}
		//
		TEST_F(LayerTransactionTest, SetCropOutOfBounds_BufferState) {
		sp<SurfaceControl> layer;
		ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", mDisplayWidth, mDisplayHeight / 2,
		ISurfaceComposerClient::eFXSurfaceBufferState));
		sp<GraphicBuffer> buffer =
		new GraphicBuffer(mDisplayWidth, mDisplayHeight / 2, PIXEL_FORMAT_RGBA_8888, 1,
		BufferUsage::CPU_READ_OFTEN \| BufferUsage::CPU_WRITE_OFTEN \|
		BufferUsage::COMPOSER_OVERLAY,
		"test");
		fillGraphicBufferColor(buffer, Rect(0, 0, mDisplayWidth, mDisplayHeight / 4), Color::BLUE);
		fillGraphicBufferColor(buffer, Rect(0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2),
		Color::RED);

		Transaction().setBuffer(layer, buffer).apply();

		// Partially out of bounds in the negative (upper left) direction
		Transaction().setCrop(layer, Rect(-128, -128, mDisplayWidth, mDisplayHeight / 4)).apply();
		{
		SCOPED_TRACE("out of bounds, negative (upper left) direction");
		auto shot = screenshot();
		shot->expectColor(Rect(0, 0, mDisplayWidth, mDisplayHeight / 2), Color::BLUE);
		shot->expectBorder(Rect(0, 0, mDisplayWidth, mDisplayHeight / 2), Color::BLACK);
		}

		// Partially out of bounds in the positive (lower right) direction
		Transaction()
		.setCrop(layer, Rect(0, mDisplayHeight / 4, mDisplayWidth + 1, mDisplayHeight))
		.apply();
		{
		SCOPED_TRACE("out of bounds, positive (lower right) direction");
		auto shot = screenshot();
		shot->expectColor(Rect(0, 0, mDisplayWidth, mDisplayHeight / 2), Color::RED);
		shot->expectBorder(Rect(0, 0, mDisplayWidth, mDisplayHeight / 2), Color::BLACK);
		}

		// Fully out of buffer space bounds
		Transaction().setCrop(layer, Rect(-128, -128, -1, -1)).apply();
		{
		SCOPED_TRACE("Fully out of bounds");
		auto shot = screenshot();
		shot->expectColor(Rect(0, 0, mDisplayWidth, mDisplayHeight / 4), Color::BLUE);
		shot->expectColor(Rect(0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2),
		Color::RED);
		}
		}

		TEST_F(LayerTransactionTest, SetCropWithTranslation_BufferQueue) {
		sp<SurfaceControl> layer;
		ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));