| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "SkTypes.h" |
| |
| |
| #if defined(SK_BUILD_FOR_ANDROID) && __ANDROID_API__ >= 26 |
| #define GL_GLEXT_PROTOTYPES |
| #define EGL_EGLEXT_PROTOTYPES |
| #include "GrAHardwareBufferImageGenerator.h" |
| |
| #include <android/hardware_buffer.h> |
| |
| #include "GrBackendSurface.h" |
| #include "GrContext.h" |
| #include "GrContextPriv.h" |
| #include "GrResourceCache.h" |
| #include "GrResourceProvider.h" |
| #include "GrTexture.h" |
| #include "GrTextureProxy.h" |
| #include "SkMessageBus.h" |
| |
| #include <EGL/egl.h> |
| #include <EGL/eglext.h> |
| #include <GLES/gl.h> |
| #include <GLES/glext.h> |
| |
| class BufferCleanupHelper { |
| public: |
| BufferCleanupHelper(EGLImageKHR image, EGLDisplay display) |
| : fImage(image) |
| , fDisplay(display) { } |
| ~BufferCleanupHelper() { |
| eglDestroyImageKHR(fDisplay, fImage); |
| } |
| private: |
| EGLImageKHR fImage; |
| EGLDisplay fDisplay; |
| }; |
| |
| std::unique_ptr<SkImageGenerator> GrAHardwareBufferImageGenerator::Make( |
| AHardwareBuffer* graphicBuffer, SkAlphaType alphaType, sk_sp<SkColorSpace> colorSpace) { |
| AHardwareBuffer_Desc bufferDesc; |
| AHardwareBuffer_describe(graphicBuffer, &bufferDesc); |
| SkColorType colorType; |
| switch (bufferDesc.format) { |
| case AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM: |
| colorType = kRGBA_8888_SkColorType; |
| break; |
| case AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT: |
| colorType = kRGBA_F16_SkColorType; |
| break; |
| case AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM: |
| colorType = kRGB_565_SkColorType; |
| break; |
| default: |
| return nullptr; |
| } |
| SkImageInfo info = SkImageInfo::Make(bufferDesc.width, bufferDesc.height, colorType, |
| alphaType, std::move(colorSpace)); |
| return std::unique_ptr<SkImageGenerator>(new GrAHardwareBufferImageGenerator(info, graphicBuffer, |
| alphaType)); |
| } |
| |
| GrAHardwareBufferImageGenerator::GrAHardwareBufferImageGenerator(const SkImageInfo& info, |
| AHardwareBuffer* graphicBuffer, SkAlphaType alphaType) |
| : INHERITED(info) |
| , fGraphicBuffer(graphicBuffer) { |
| AHardwareBuffer_acquire(fGraphicBuffer); |
| } |
| |
| GrAHardwareBufferImageGenerator::~GrAHardwareBufferImageGenerator() { |
| AHardwareBuffer_release(fGraphicBuffer); |
| this->clear(); |
| } |
| |
| void GrAHardwareBufferImageGenerator::clear() { |
| if (fOriginalTexture) { |
| // Notify the original cache that it can free the last ref, so it happens on the correct |
| // thread. |
| GrGpuResourceFreedMessage msg { fOriginalTexture, fOwningContextID }; |
| SkMessageBus<GrGpuResourceFreedMessage>::Post(msg); |
| fOriginalTexture = nullptr; |
| } |
| } |
| |
| void GrAHardwareBufferImageGenerator::deleteImageTexture(void* context) { |
| BufferCleanupHelper* cleanupHelper = static_cast<BufferCleanupHelper*>(context); |
| delete cleanupHelper; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| #if SK_SUPPORT_GPU |
| |
| sk_sp<GrTextureProxy> GrAHardwareBufferImageGenerator::onGenerateTexture( |
| GrContext* context, const SkImageInfo& info, const SkIPoint& origin, |
| SkTransferFunctionBehavior) { |
| auto proxy = this->makeProxy(context); |
| if (!proxy) { |
| return nullptr; |
| } |
| |
| if (0 == origin.fX && 0 == origin.fY && |
| info.width() == getInfo().width() && info.height() == getInfo().height()) { |
| // If the caller wants the entire texture, we're done |
| return proxy; |
| } else { |
| // Otherwise, make a copy of the requested subset. |
| return GrSurfaceProxy::Copy(context, proxy.get(), |
| SkIRect::MakeXYWH(origin.fX, origin.fY, info.width(), |
| info.height()), |
| SkBudgeted::kYes); |
| } |
| } |
| #endif |
| |
| sk_sp<GrTextureProxy> GrAHardwareBufferImageGenerator::makeProxy(GrContext* context) { |
| if (!context->getGpu() || kOpenGL_GrBackend != context->contextPriv().getBackend()) { |
| // Check if GrContext is not abandoned and the backend is GL. |
| return nullptr; |
| } |
| |
| // return a cached GrTexture if invoked with the same context |
| if (fOriginalTexture && fOwningContextID == context->uniqueID()) { |
| return GrSurfaceProxy::MakeWrapped(sk_ref_sp(fOriginalTexture)); |
| } |
| |
| while (GL_NO_ERROR != glGetError()) {} //clear GL errors |
| |
| EGLClientBuffer clientBuffer = eglGetNativeClientBufferANDROID(fGraphicBuffer); |
| EGLint attribs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, |
| EGL_NONE }; |
| EGLDisplay display = eglGetCurrentDisplay(); |
| EGLImageKHR image = eglCreateImageKHR(display, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID, |
| clientBuffer, attribs); |
| if (EGL_NO_IMAGE_KHR == image) { |
| SkDebugf("Could not create EGL image, err = (%#x)", (int) eglGetError() ); |
| return nullptr; |
| } |
| GrGLuint texID; |
| glGenTextures(1, &texID); |
| if (!texID) { |
| eglDestroyImageKHR(display, image); |
| return nullptr; |
| } |
| glBindTexture(GL_TEXTURE_EXTERNAL_OES, texID); |
| GLenum status = GL_NO_ERROR; |
| if ((status = glGetError()) != GL_NO_ERROR) { |
| SkDebugf("glBindTexture failed (%#x)", (int) status); |
| glDeleteTextures(1, &texID); |
| eglDestroyImageKHR(display, image); |
| return nullptr; |
| } |
| glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, image); |
| if ((status = glGetError()) != GL_NO_ERROR) { |
| SkDebugf("glEGLImageTargetTexture2DOES failed (%#x)", (int) status); |
| glDeleteTextures(1, &texID); |
| eglDestroyImageKHR(display, image); |
| return nullptr; |
| } |
| context->resetContext(kTextureBinding_GrGLBackendState); |
| |
| GrGLTextureInfo textureInfo; |
| textureInfo.fTarget = GL_TEXTURE_EXTERNAL_OES; |
| textureInfo.fID = texID; |
| |
| GrPixelConfig pixelConfig; |
| switch (getInfo().colorType()) { |
| case kRGBA_8888_SkColorType: |
| pixelConfig = kRGBA_8888_GrPixelConfig; |
| break; |
| case kRGBA_F16_SkColorType: |
| pixelConfig = kRGBA_half_GrPixelConfig; |
| break; |
| case kRGB_565_SkColorType: |
| pixelConfig = kRGB_565_GrPixelConfig; |
| break; |
| default: |
| glDeleteTextures(1, &texID); |
| eglDestroyImageKHR(display, image); |
| return nullptr; |
| } |
| |
| GrBackendTexture backendTex(getInfo().width(), getInfo().height(), pixelConfig, textureInfo); |
| if (backendTex.width() <= 0 || backendTex.height() <= 0) { |
| glDeleteTextures(1, &texID); |
| eglDestroyImageKHR(display, image); |
| return nullptr; |
| } |
| sk_sp<GrTexture> tex = context->resourceProvider()->wrapBackendTexture(backendTex, |
| kTopLeft_GrSurfaceOrigin, |
| kAdopt_GrWrapOwnership); |
| if (!tex) { |
| glDeleteTextures(1, &texID); |
| eglDestroyImageKHR(display, image); |
| return nullptr; |
| } |
| tex->setRelease(deleteImageTexture, new BufferCleanupHelper(image, display)); |
| |
| // We fail this assert, if the context has changed. This will be fully handled after |
| // skbug.com/6812 is ready. |
| SkASSERT(!fOriginalTexture); |
| |
| this->clear(); |
| fOriginalTexture = tex.get(); |
| fOwningContextID = context->uniqueID(); |
| // Attach our texture to this context's resource cache. This ensures that deletion will happen |
| // in the correct thread/context. This adds the only ref to the texture that will persist from |
| // this point. To trigger GrTexture deletion a message is sent by generator dtor or by |
| // makeProxy when it is invoked with a different context. |
| //TODO: GrResourceCache should delete GrTexture, when GrContext is deleted. Currently |
| //TODO: SkMessageBus ignores messages for deleted contexts and GrTexture will leak. |
| context->getResourceCache()->insertCrossContextGpuResource(fOriginalTexture); |
| return GrSurfaceProxy::MakeWrapped(std::move(tex)); |
| } |
| |
| bool GrAHardwareBufferImageGenerator::onIsValid(GrContext* context) const { |
| if (nullptr == context) { |
| return false; //CPU backend is not supported, because hardware buffer can be swizzled |
| } |
| // TODO: add Vulkan support |
| return kOpenGL_GrBackend == context->contextPriv().getBackend(); |
| } |
| |
| #endif //SK_BUILD_FOR_ANDROID_FRAMEWORK |