Stan Iliev | 7e910df | 2017-06-02 10:29:21 -0400 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2017 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | #include "SkTypes.h" |
| 8 | |
| 9 | //TODO: This define is temporary and we will compile with NDK after |
| 10 | //TODO: Skia bug 6672 is resolved. |
| 11 | #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK |
| 12 | #define GL_GLEXT_PROTOTYPES |
| 13 | #define EGL_EGLEXT_PROTOTYPES |
| 14 | #include "GrAHardwareBufferImageGenerator.h" |
| 15 | |
| 16 | #include "GrBackendSurface.h" |
| 17 | #include "GrContext.h" |
| 18 | #include "GrContextPriv.h" |
| 19 | #include "GrResourceProvider.h" |
| 20 | |
| 21 | #include <EGL/egl.h> |
| 22 | #include <EGL/eglext.h> |
| 23 | #include <GLES/gl.h> |
| 24 | #include <GLES/glext.h> |
| 25 | |
| 26 | class BufferCleanupHelper { |
| 27 | public: |
| 28 | BufferCleanupHelper(EGLImageKHR image, EGLDisplay display) |
| 29 | : fImage(image) |
| 30 | , fDisplay(display) { } |
| 31 | ~BufferCleanupHelper() { |
| 32 | eglDestroyImageKHR(fDisplay, fImage); |
| 33 | } |
| 34 | private: |
| 35 | EGLImageKHR fImage; |
| 36 | EGLDisplay fDisplay; |
| 37 | }; |
| 38 | |
| 39 | std::unique_ptr<SkImageGenerator> GrAHardwareBufferImageGenerator::Make( |
| 40 | AHardwareBuffer* graphicBuffer, SkAlphaType alphaType, sk_sp<SkColorSpace> colorSpace) { |
| 41 | AHardwareBuffer_Desc bufferDesc; |
| 42 | AHardwareBuffer_describe(graphicBuffer, &bufferDesc); |
| 43 | SkColorType colorType; |
| 44 | switch (bufferDesc.format) { |
| 45 | case AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM: |
| 46 | colorType = kRGBA_8888_SkColorType; |
| 47 | break; |
| 48 | case AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT: |
| 49 | colorType = kRGBA_F16_SkColorType; |
| 50 | break; |
| 51 | case AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM: |
| 52 | colorType = kRGB_565_SkColorType; |
| 53 | break; |
| 54 | default: |
| 55 | return nullptr; |
| 56 | } |
| 57 | SkImageInfo info = SkImageInfo::Make(bufferDesc.width, bufferDesc.height, colorType, |
| 58 | alphaType, std::move(colorSpace)); |
| 59 | return std::unique_ptr<SkImageGenerator>(new GrAHardwareBufferImageGenerator(info, graphicBuffer, |
| 60 | alphaType)); |
| 61 | } |
| 62 | |
| 63 | GrAHardwareBufferImageGenerator::GrAHardwareBufferImageGenerator(const SkImageInfo& info, |
| 64 | AHardwareBuffer* graphicBuffer, SkAlphaType alphaType) |
| 65 | : INHERITED(info) |
| 66 | , fGraphicBuffer(graphicBuffer) |
| 67 | , fAlphaType(alphaType) { |
| 68 | AHardwareBuffer_acquire(fGraphicBuffer); |
| 69 | } |
| 70 | |
| 71 | GrAHardwareBufferImageGenerator::~GrAHardwareBufferImageGenerator() { |
| 72 | AHardwareBuffer_release(fGraphicBuffer); |
| 73 | } |
| 74 | |
| 75 | void GrAHardwareBufferImageGenerator::deleteImageTexture(void* context) { |
| 76 | BufferCleanupHelper* cleanupHelper = static_cast<BufferCleanupHelper*>(context); |
| 77 | delete cleanupHelper; |
| 78 | } |
| 79 | |
| 80 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 81 | |
| 82 | #if SK_SUPPORT_GPU |
| 83 | |
| 84 | |
| 85 | sk_sp<GrTextureProxy> GrAHardwareBufferImageGenerator::onGenerateTexture( |
| 86 | GrContext* context, const SkImageInfo& info, const SkIPoint& origin) { |
| 87 | // TODO: return a cached GrTextureProxy if invoked with the same context |
| 88 | // TODO: if we cache GrTextureProxy, then deleteImageTexture may be invoked on the wrong thread |
| 89 | |
| 90 | if (!context->getGpu() || kOpenGL_GrBackend != context->contextPriv().getBackend()) { |
| 91 | // Check if GrContext is not abandoned and the backend is GL. |
| 92 | return nullptr; |
| 93 | } |
| 94 | |
| 95 | while (GL_NO_ERROR != glGetError()) {} //clear GL errors |
| 96 | |
| 97 | EGLClientBuffer clientBuffer = eglGetNativeClientBufferANDROID(fGraphicBuffer); |
| 98 | EGLint attribs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, |
| 99 | EGL_NONE }; |
| 100 | EGLDisplay display = eglGetCurrentDisplay(); |
| 101 | EGLImageKHR image = eglCreateImageKHR(display, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID, |
| 102 | clientBuffer, attribs); |
| 103 | if (EGL_NO_IMAGE_KHR == image) { |
| 104 | SkDebugf("Could not create EGL image, err = (%#x)", (int) eglGetError() ); |
| 105 | return nullptr; |
| 106 | } |
| 107 | GrGLuint texID; |
| 108 | glGenTextures(1, &texID); |
| 109 | if (!texID) { |
| 110 | eglDestroyImageKHR(display, image); |
| 111 | return nullptr; |
| 112 | } |
| 113 | glBindTexture(GL_TEXTURE_EXTERNAL_OES, texID); |
| 114 | GLenum status = GL_NO_ERROR; |
| 115 | if ((status = glGetError()) != GL_NO_ERROR) { |
| 116 | SkDebugf("glBindTexture failed (%#x)", (int) status); |
| 117 | glDeleteTextures(1, &texID); |
| 118 | eglDestroyImageKHR(display, image); |
| 119 | return nullptr; |
| 120 | } |
| 121 | glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, image); |
| 122 | if ((status = glGetError()) != GL_NO_ERROR) { |
| 123 | SkDebugf("glEGLImageTargetTexture2DOES failed (%#x)", (int) status); |
| 124 | glDeleteTextures(1, &texID); |
| 125 | eglDestroyImageKHR(display, image); |
| 126 | return nullptr; |
| 127 | } |
| 128 | context->resetContext(kTextureBinding_GrGLBackendState); |
| 129 | |
| 130 | GrGLTextureInfo textureInfo; |
| 131 | textureInfo.fTarget = GL_TEXTURE_EXTERNAL_OES; |
| 132 | textureInfo.fID = texID; |
| 133 | |
| 134 | GrPixelConfig pixelConfig; |
| 135 | switch (getInfo().colorType()) { |
| 136 | case kRGBA_8888_SkColorType: |
| 137 | pixelConfig = kRGBA_8888_GrPixelConfig; |
| 138 | break; |
| 139 | case kRGBA_F16_SkColorType: |
| 140 | pixelConfig = kRGBA_half_GrPixelConfig; |
| 141 | break; |
| 142 | case kRGB_565_SkColorType: |
| 143 | pixelConfig = kRGB_565_GrPixelConfig; |
| 144 | break; |
| 145 | default: |
| 146 | glDeleteTextures(1, &texID); |
| 147 | eglDestroyImageKHR(display, image); |
| 148 | return nullptr; |
| 149 | } |
| 150 | |
| 151 | GrBackendTexture backendTex(getInfo().width(), getInfo().height(), pixelConfig, textureInfo); |
| 152 | if (backendTex.width() <= 0 || backendTex.height() <= 0) { |
| 153 | glDeleteTextures(1, &texID); |
| 154 | eglDestroyImageKHR(display, image); |
| 155 | return nullptr; |
| 156 | } |
| 157 | GrBackendTextureFlags flags = kNone_GrBackendTextureFlag; |
| 158 | sk_sp<GrTexture> tex = context->resourceProvider()->wrapBackendTexture(backendTex, |
| 159 | kTopLeft_GrSurfaceOrigin, |
| 160 | flags, |
| 161 | 0, |
| 162 | kAdopt_GrWrapOwnership); |
| 163 | if (!tex) { |
| 164 | glDeleteTextures(1, &texID); |
| 165 | eglDestroyImageKHR(display, image); |
| 166 | return nullptr; |
| 167 | } |
| 168 | tex->setRelease(deleteImageTexture, new BufferCleanupHelper(image, display)); |
| 169 | sk_sp<GrTextureProxy> proxy(GrSurfaceProxy::MakeWrapped(std::move(tex))); |
| 170 | |
| 171 | if (0 == origin.fX && 0 == origin.fY && |
| 172 | info.width() == backendTex.width() && info.height() == backendTex.height()) { |
| 173 | // If the caller wants the entire texture, we're done |
| 174 | return proxy; |
| 175 | } else { |
| 176 | // Otherwise, make a copy of the requested subset. |
| 177 | GrSurfaceDesc desc; |
| 178 | desc.fConfig = proxy->config(); |
| 179 | desc.fWidth = info.width(); |
| 180 | desc.fHeight = info.height(); |
| 181 | desc.fOrigin = proxy->origin(); |
| 182 | desc.fIsMipMapped = proxy->isMipMapped(); |
| 183 | |
| 184 | sk_sp<GrSurfaceContext> sContext(context->contextPriv().makeDeferredSurfaceContext( |
| 185 | desc, SkBackingFit::kExact, SkBudgeted::kYes)); |
| 186 | if (!sContext) { |
| 187 | return nullptr; |
| 188 | } |
| 189 | |
| 190 | SkIRect subset = SkIRect::MakeXYWH(origin.fX, origin.fY, info.width(), info.height()); |
| 191 | if (!sContext->copy(proxy.get(), subset, SkIPoint::Make(0, 0))) { |
| 192 | return nullptr; |
| 193 | } |
| 194 | |
| 195 | return sContext->asTextureProxyRef(); |
| 196 | } |
| 197 | } |
| 198 | #endif |
| 199 | |
| 200 | bool GrAHardwareBufferImageGenerator::onIsValid(GrContext* context) const { |
| 201 | if (nullptr == context) { |
| 202 | return false; //CPU backend is not supported, because hardware buffer can be swizzled |
| 203 | } |
| 204 | // TODO: add Vulkan support |
| 205 | return kOpenGL_GrBackend == context->contextPriv().getBackend(); |
| 206 | } |
| 207 | |
| 208 | #endif //SK_BUILD_FOR_ANDROID_FRAMEWORK |