diff options
Diffstat (limited to 'libs/hwui/LayerRenderer.cpp')
| -rw-r--r-- | libs/hwui/LayerRenderer.cpp | 426 |
1 files changed, 12 insertions, 414 deletions
diff --git a/libs/hwui/LayerRenderer.cpp b/libs/hwui/LayerRenderer.cpp index 137316f57725..8d50dc2ccd94 100644 --- a/libs/hwui/LayerRenderer.cpp +++ b/libs/hwui/LayerRenderer.cpp @@ -14,7 +14,6 @@ * limitations under the License. */ -#include "LayerCache.h" #include "LayerRenderer.h" #include "Matrix.h" #include "Properties.h" @@ -27,257 +26,15 @@ #include <private/hwui/DrawGlInfo.h> - namespace android { namespace uirenderer { -/////////////////////////////////////////////////////////////////////////////// -// Rendering -/////////////////////////////////////////////////////////////////////////////// - -LayerRenderer::LayerRenderer(RenderState& renderState, Layer* layer) - : OpenGLRenderer(renderState) - , mLayer(layer) { -} - -LayerRenderer::~LayerRenderer() { -} - -void LayerRenderer::prepareDirty(int viewportWidth, int viewportHeight, - float left, float top, float right, float bottom, bool opaque) { - LAYER_RENDERER_LOGD("Rendering into layer, fbo = %d", mLayer->getFbo()); - - mRenderState.bindFramebuffer(mLayer->getFbo()); - - const float width = mLayer->layer.getWidth(); - const float height = mLayer->layer.getHeight(); - - Rect dirty(left, top, right, bottom); - if (dirty.isEmpty() || (dirty.left <= 0 && dirty.top <= 0 && - dirty.right >= width && dirty.bottom >= height)) { - mLayer->region.clear(); - dirty.set(0.0f, 0.0f, width, height); - } else { - dirty.doIntersect(0.0f, 0.0f, width, height); - android::Rect r(dirty.left, dirty.top, dirty.right, dirty.bottom); - mLayer->region.subtractSelf(r); - } - mLayer->clipRect.set(dirty); - - OpenGLRenderer::prepareDirty(viewportWidth, viewportHeight, - dirty.left, dirty.top, dirty.right, dirty.bottom, opaque); -} - -void LayerRenderer::clear(float left, float top, float right, float bottom, bool opaque) { - if (mLayer->isDirty()) { - mRenderState.scissor().setEnabled(false); - glClear(GL_COLOR_BUFFER_BIT); - - mRenderState.scissor().reset(); - mLayer->setDirty(false); - } else { - OpenGLRenderer::clear(left, top, right, bottom, opaque); - } -} - -bool LayerRenderer::finish() { - bool retval = OpenGLRenderer::finish(); - - generateMesh(); - - LAYER_RENDERER_LOGD("Finished rendering into layer, fbo = %d", mLayer->getFbo()); - - // No need to unbind our FBO, this will be taken care of by the caller - // who will invoke OpenGLRenderer::resume() - return retval; -} - -GLuint LayerRenderer::getTargetFbo() const { - return mLayer->getFbo(); -} - -bool LayerRenderer::suppressErrorChecks() const { - return true; -} - -/////////////////////////////////////////////////////////////////////////////// -// Layer support -/////////////////////////////////////////////////////////////////////////////// - -bool LayerRenderer::hasLayer() const { - return true; -} - -void LayerRenderer::ensureStencilBuffer() { - attachStencilBufferToLayer(mLayer); -} - -/////////////////////////////////////////////////////////////////////////////// -// Dirty region tracking -/////////////////////////////////////////////////////////////////////////////// - -Region* LayerRenderer::getRegion() const { - if (mState.currentFlags() & Snapshot::kFlagFboTarget) { - return OpenGLRenderer::getRegion(); - } - return &mLayer->region; -} - -// TODO: This implementation uses a very simple approach to fixing T-junctions which keeps the -// results as rectangles, and is thus not necessarily efficient in the geometry -// produced. Eventually, it may be better to develop triangle-based mechanism. -void LayerRenderer::generateMesh() { - if (mLayer->region.isRect() || mLayer->region.isEmpty()) { - if (mLayer->mesh) { - delete[] mLayer->mesh; - mLayer->mesh = nullptr; - mLayer->meshElementCount = 0; - } - - mLayer->setRegionAsRect(); - return; - } - - // avoid T-junctions as they cause artifacts in between the resultant - // geometry when complex transforms occur. - // TODO: generate the safeRegion only if necessary based on drawing transform (see - // OpenGLRenderer::composeLayerRegion()) - Region safeRegion = Region::createTJunctionFreeRegion(mLayer->region); - - size_t count; - const android::Rect* rects = safeRegion.getArray(&count); - - GLsizei elementCount = count * 6; - - if (mLayer->mesh && mLayer->meshElementCount < elementCount) { - delete[] mLayer->mesh; - mLayer->mesh = nullptr; - } - - if (!mLayer->mesh) { - mLayer->mesh = new TextureVertex[count * 4]; - } - mLayer->meshElementCount = elementCount; - - const float texX = 1.0f / float(mLayer->getWidth()); - const float texY = 1.0f / float(mLayer->getHeight()); - const float height = mLayer->layer.getHeight(); - - TextureVertex* mesh = mLayer->mesh; - - for (size_t i = 0; i < count; i++) { - const android::Rect* r = &rects[i]; - - const float u1 = r->left * texX; - const float v1 = (height - r->top) * texY; - const float u2 = r->right * texX; - const float v2 = (height - r->bottom) * texY; - - TextureVertex::set(mesh++, r->left, r->top, u1, v1); - TextureVertex::set(mesh++, r->right, r->top, u2, v1); - TextureVertex::set(mesh++, r->left, r->bottom, u1, v2); - TextureVertex::set(mesh++, r->right, r->bottom, u2, v2); - } -} - -/////////////////////////////////////////////////////////////////////////////// -// Layers management -/////////////////////////////////////////////////////////////////////////////// - -Layer* LayerRenderer::createRenderLayer(RenderState& renderState, uint32_t width, uint32_t height) { - ATRACE_FORMAT("Allocate %ux%u HW Layer", width, height); - LAYER_RENDERER_LOGD("Requesting new render layer %dx%d", width, height); - - Caches& caches = Caches::getInstance(); - GLuint fbo = renderState.createFramebuffer(); - if (!fbo) { - ALOGW("Could not obtain an FBO"); - return nullptr; - } - - caches.textureState().activateTexture(0); - Layer* layer = caches.layerCache.get(renderState, width, height); - if (!layer) { - ALOGW("Could not obtain a layer"); - return nullptr; - } - - // We first obtain a layer before comparing against the max texture size - // because layers are not allocated at the exact desired size. They are - // always created slightly larger to improve recycling - const uint32_t maxTextureSize = caches.maxTextureSize; - if (layer->getWidth() > maxTextureSize || layer->getHeight() > maxTextureSize) { - ALOGW("Layer exceeds max. dimensions supported by the GPU (%dx%d, max=%dx%d)", - width, height, maxTextureSize, maxTextureSize); - - // Creating a new layer always increment its refcount by 1, this allows - // us to destroy the layer object if one was created for us - layer->decStrong(nullptr); - - return nullptr; - } - - layer->setFbo(fbo); - layer->layer.set(0.0f, 0.0f, width, height); - layer->texCoords.set(0.0f, height / float(layer->getHeight()), - width / float(layer->getWidth()), 0.0f); - layer->setAlpha(255, SkXfermode::kSrcOver_Mode); - layer->setColorFilter(nullptr); - layer->setDirty(true); - layer->region.clear(); - - GLuint previousFbo = renderState.getFramebuffer(); - - renderState.bindFramebuffer(layer->getFbo()); - layer->bindTexture(); - - // Initialize the texture if needed - if (layer->isEmpty()) { - layer->setEmpty(false); - layer->allocateTexture(); - - // This should only happen if we run out of memory - if (CC_UNLIKELY(GLUtils::dumpGLErrors())) { - LOG_ALWAYS_FATAL("Could not allocate texture for layer (fbo=%d %dx%d)", - fbo, width, height); - renderState.bindFramebuffer(previousFbo); - layer->decStrong(nullptr); - return nullptr; - } - } - - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, - layer->getTextureId(), 0); - - renderState.bindFramebuffer(previousFbo); - - return layer; -} - -bool LayerRenderer::resizeLayer(Layer* layer, uint32_t width, uint32_t height) { - if (layer) { - LAYER_RENDERER_LOGD("Resizing layer fbo = %d to %dx%d", layer->getFbo(), width, height); - - if (layer->resize(width, height)) { - layer->layer.set(0.0f, 0.0f, width, height); - layer->texCoords.set(0.0f, height / float(layer->getHeight()), - width / float(layer->getWidth()), 0.0f); - } else { - return false; - } - } - - return true; -} - Layer* LayerRenderer::createTextureLayer(RenderState& renderState) { LAYER_RENDERER_LOGD("Creating new texture layer"); - Layer* layer = new Layer(Layer::Type::Texture, renderState, 0, 0); - layer->setCacheable(false); + Layer* layer = new Layer(renderState, 0, 0); layer->layer.set(0.0f, 0.0f, 0.0f, 0.0f); layer->texCoords.set(0.0f, 1.0f, 1.0f, 0.0f); - layer->region.clear(); layer->setRenderTarget(GL_NONE); // see ::updateTextureLayer() Caches::getInstance().textureState().activateTexture(0); @@ -287,178 +44,19 @@ Layer* LayerRenderer::createTextureLayer(RenderState& renderState) { } void LayerRenderer::updateTextureLayer(Layer* layer, uint32_t width, uint32_t height, - bool isOpaque, bool forceFilter, GLenum renderTarget, const float* textureTransform) { - if (layer) { - layer->setBlend(!isOpaque); - layer->setForceFilter(forceFilter); - layer->setSize(width, height); - layer->layer.set(0.0f, 0.0f, width, height); - layer->region.set(width, height); - layer->regionRect.set(0.0f, 0.0f, width, height); - layer->getTexTransform().load(textureTransform); - - if (renderTarget != layer->getRenderTarget()) { - layer->setRenderTarget(renderTarget); - layer->bindTexture(); - layer->setFilter(GL_NEAREST, false, true); - layer->setWrap(GL_CLAMP_TO_EDGE, false, true); - } - } -} - -void LayerRenderer::destroyLayer(Layer* layer) { - if (layer) { - ATRACE_FORMAT("Destroy %ux%u HW Layer", layer->getWidth(), layer->getHeight()); - LAYER_RENDERER_LOGD("Recycling layer, %dx%d fbo = %d", - layer->getWidth(), layer->getHeight(), layer->getFbo()); - - if (!Caches::getInstance().layerCache.put(layer)) { - LAYER_RENDERER_LOGD(" Destroyed!"); - layer->decStrong(nullptr); - } else { - LAYER_RENDERER_LOGD(" Cached!"); -#if DEBUG_LAYER_RENDERER - Caches::getInstance().layerCache.dump(); -#endif - layer->removeFbo(); - layer->region.clear(); - } - } -} - -void LayerRenderer::flushLayer(RenderState& renderState, Layer* layer) { -#ifdef GL_EXT_discard_framebuffer - if (!layer) return; - - GLuint fbo = layer->getFbo(); - if (fbo) { - // If possible, discard any enqueud operations on deferred - // rendering architectures - if (Caches::getInstance().extensions().hasDiscardFramebuffer()) { - GLuint previousFbo = renderState.getFramebuffer(); - if (fbo != previousFbo) { - renderState.bindFramebuffer(fbo); - } - - const GLenum attachments[] = { GL_COLOR_ATTACHMENT0 }; - glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, attachments); - - if (fbo != previousFbo) { - renderState.bindFramebuffer(previousFbo); - } - } - } -#endif -} - -bool LayerRenderer::copyLayer(RenderState& renderState, Layer* layer, SkBitmap* bitmap) { - Caches& caches = Caches::getInstance(); - if (layer && layer->isRenderable() - && bitmap->width() <= caches.maxTextureSize - && bitmap->height() <= caches.maxTextureSize) { - - GLuint fbo = renderState.createFramebuffer(); - if (!fbo) { - ALOGW("Could not obtain an FBO"); - return false; - } - - SkAutoLockPixels alp(*bitmap); - - GLuint texture; - GLuint previousFbo; - GLsizei previousViewportWidth; - GLsizei previousViewportHeight; - - GLenum format; - GLenum type; - - bool status = false; - - switch (bitmap->colorType()) { - case kAlpha_8_SkColorType: - format = GL_ALPHA; - type = GL_UNSIGNED_BYTE; - break; - case kRGB_565_SkColorType: - format = GL_RGB; - type = GL_UNSIGNED_SHORT_5_6_5; - break; - case kARGB_4444_SkColorType: - format = GL_RGBA; - type = GL_UNSIGNED_SHORT_4_4_4_4; - break; - case kN32_SkColorType: - default: - format = GL_RGBA; - type = GL_UNSIGNED_BYTE; - break; - } - - float alpha = layer->getAlpha(); - SkXfermode::Mode mode = layer->getMode(); - GLuint previousLayerFbo = layer->getFbo(); - - layer->setAlpha(255, SkXfermode::kSrc_Mode); - layer->setFbo(fbo); - - previousFbo = renderState.getFramebuffer(); - renderState.getViewport(&previousViewportWidth, &previousViewportHeight); - renderState.bindFramebuffer(fbo); - - glGenTextures(1, &texture); - - caches.textureState().activateTexture(0); - caches.textureState().bindTexture(texture); - - glPixelStorei(GL_PACK_ALIGNMENT, bitmap->bytesPerPixel()); - - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - - glTexImage2D(GL_TEXTURE_2D, 0, format, bitmap->width(), bitmap->height(), - 0, format, type, nullptr); - - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, - GL_TEXTURE_2D, texture, 0); - - { - LayerRenderer renderer(renderState, layer); - renderer.OpenGLRenderer::prepareDirty(bitmap->width(), bitmap->height(), - 0.0f, 0.0f, bitmap->width(), bitmap->height(), !layer->isBlend()); - - renderState.scissor().setEnabled(false); - renderer.translate(0.0f, bitmap->height()); - renderer.scale(1.0f, -1.0f); - - { - Rect bounds; - bounds.set(0.0f, 0.0f, bitmap->width(), bitmap->height()); - renderer.drawTextureLayer(layer, bounds); - - glReadPixels(0, 0, bitmap->width(), bitmap->height(), format, - type, bitmap->getPixels()); - - } - - status = true; - } - - renderState.bindFramebuffer(previousFbo); - layer->setAlpha(alpha, mode); - layer->setFbo(previousLayerFbo); - caches.textureState().deleteTexture(texture); - renderState.deleteFramebuffer(fbo); - renderState.setViewport(previousViewportWidth, previousViewportHeight); - - GL_CHECKPOINT(MODERATE); + bool isOpaque, bool forceFilter, GLenum renderTarget, const float* textureTransform) { + layer->setBlend(!isOpaque); + layer->setForceFilter(forceFilter); + layer->setSize(width, height); + layer->layer.set(0.0f, 0.0f, width, height); + layer->getTexTransform().load(textureTransform); - return status; + if (renderTarget != layer->getRenderTarget()) { + layer->setRenderTarget(renderTarget); + layer->bindTexture(); + layer->setFilter(GL_NEAREST, false, true); + layer->setWrap(GL_CLAMP_TO_EDGE, false, true); } - return false; } }; // namespace uirenderer |