| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "org_skia_canvasproof_GaneshPictureRenderer.h" |
| |
| #include "GrContext.h" |
| #include "JavaInputStream.h" |
| #include "SkCanvas.h" |
| #include "SkMatrix.h" |
| #include "SkPicture.h" |
| #include "SkRect.h" |
| #include "SkStream.h" |
| #include "SkSurface.h" |
| |
| #define TAG "GaneshPictureRenderer.cpp: " |
| |
| static void render_picture(GrContext* grContext, |
| int width, |
| int height, |
| const SkPicture* picture, |
| const SkMatrix& matrix) { |
| SkASSERT(grContext); |
| if (!picture) { |
| SkDebugf(TAG "!picture\n"); |
| return; |
| } |
| // Render to the default framebuffer render target. |
| GrBackendRenderTargetDesc desc; |
| desc.fWidth = width; |
| desc.fHeight = height; |
| desc.fConfig = kSkia8888_GrPixelConfig; |
| desc.fOrigin = kBottomLeft_GrSurfaceOrigin; |
| SkSurfaceProps surfaceProps(SkSurfaceProps::kUseDeviceIndependentFonts_Flag, |
| kUnknown_SkPixelGeometry); |
| // TODO: Check to see if we can keep the surface between draw calls. |
| sk_sp<SkSurface> surface( |
| SkSurface::MakeFromBackendRenderTarget(grContext, desc, nullptr, &surfaceProps)); |
| if (surface) { |
| SkCanvas* canvas = surface->getCanvas(); |
| SkASSERT(canvas); |
| canvas->clear(SK_ColorGRAY); |
| canvas->concat(matrix); |
| SkRect cullRect = picture->cullRect(); |
| canvas->clipRect(cullRect); |
| picture->playback(canvas); |
| canvas->flush(); |
| } |
| } |
| |
| namespace { |
| struct GaneshPictureRendererImpl { |
| SkAutoTUnref<GrContext> fGrContext; |
| void render(int w, int h, const SkPicture* p, const SkMatrix& m) { |
| if (!fGrContext) { |
| // Cache the rendering context between frames. |
| fGrContext.reset(GrContext::Create(kOpenGL_GrBackend, 0)); |
| if (!fGrContext) { |
| SkDebugf(TAG "GrContext::Create - failed\n"); |
| return; |
| } |
| } |
| render_picture(fGrContext, w, h, p, m); |
| } |
| }; |
| } // namespace |
| |
| /* |
| * Class: org_skia_canvasproof_GaneshPictureRenderer |
| * Method: DrawThisFrame |
| * Signature: (IIFJ)V |
| */ |
| JNIEXPORT void JNICALL Java_org_skia_canvasproof_GaneshPictureRenderer_DrawThisFrame( |
| JNIEnv*, jclass, jint width, jint height, jfloat scale, jlong ptr, jlong pic) { |
| if (!ptr) { return; } |
| SkMatrix matrix = SkMatrix::MakeScale((SkScalar)scale); |
| GaneshPictureRendererImpl* impl = |
| reinterpret_cast<GaneshPictureRendererImpl*>(ptr); |
| SkPicture* picture = reinterpret_cast<SkPicture*>(pic); |
| impl->render((int)width, (int)height, picture, matrix); |
| } |
| |
| /* |
| * Class: org_skia_canvasproof_GaneshPictureRenderer |
| * Method: Ctor |
| * Signature: ()J |
| */ |
| JNIEXPORT jlong JNICALL Java_org_skia_canvasproof_GaneshPictureRenderer_Ctor |
| (JNIEnv *, jclass) { |
| return reinterpret_cast<jlong>(new GaneshPictureRendererImpl); |
| } |
| |
| /* |
| * Class: org_skia_canvasproof_GaneshPictureRenderer |
| * Method: CleanUp |
| * Signature: (J)V |
| */ |
| JNIEXPORT void JNICALL Java_org_skia_canvasproof_GaneshPictureRenderer_CleanUp |
| (JNIEnv *, jclass, jlong ptr) { |
| delete reinterpret_cast<GaneshPictureRendererImpl*>(ptr); |
| } |
| |
| namespace { |
| struct AndroidRectHelper { |
| jfieldID fLeft, fTop, fRight, fBottom; |
| AndroidRectHelper() |
| : fLeft(nullptr), fTop(nullptr), fRight(nullptr), fBottom(nullptr) {} |
| void config(JNIEnv *env) { |
| if (!fLeft) { |
| jclass rectClass = env->FindClass("android/graphics/Rect"); |
| SkASSERT(rectClass); |
| fLeft = env->GetFieldID(rectClass, "left", "I"); |
| fTop = env->GetFieldID(rectClass, "top", "I"); |
| fRight = env->GetFieldID(rectClass, "right", "I"); |
| fBottom = env->GetFieldID(rectClass, "bottom", "I"); |
| } |
| } |
| }; |
| } // namespace |
| |
| /* |
| * Class: org_skia_canvasproof_GaneshPictureRenderer |
| * Method: GetCullRect |
| * Signature: (Landroid/graphics/Rect;J)V |
| */ |
| JNIEXPORT void JNICALL Java_org_skia_canvasproof_GaneshPictureRenderer_GetCullRect |
| (JNIEnv *env, jclass, jobject androidGraphicsRect, jlong picturePtr) { |
| SkASSERT(androidGraphicsRect); |
| const SkPicture* picture = reinterpret_cast<SkPicture*>(picturePtr); |
| SkRect rect = SkRect::MakeEmpty(); |
| if (picture) { |
| rect = picture->cullRect(); |
| } |
| SkIRect iRect; |
| rect.roundOut(&iRect); |
| static AndroidRectHelper help; |
| help.config(env); |
| env->SetIntField(androidGraphicsRect, help.fLeft, (jint)(iRect.left())); |
| env->SetIntField(androidGraphicsRect, help.fTop, (jint)(iRect.top())); |
| env->SetIntField(androidGraphicsRect, help.fRight, (jint)(iRect.right())); |
| env->SetIntField(androidGraphicsRect, help.fBottom, (jint)(iRect.bottom())); |
| } |