BakedOpRenderer.cpp revision 1dfa0704964c17e45775b9e01f1fa0b1a10774f7
1/* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "BakedOpRenderer.h" 18 19#include "Caches.h" 20#include "Glop.h" 21#include "GlopBuilder.h" 22#include "renderstate/OffscreenBufferPool.h" 23#include "renderstate/RenderState.h" 24#include "utils/GLUtils.h" 25#include "VertexBuffer.h" 26 27#include <algorithm> 28 29namespace android { 30namespace uirenderer { 31 32OffscreenBuffer* BakedOpRenderer::startTemporaryLayer(uint32_t width, uint32_t height) { 33 LOG_ALWAYS_FATAL_IF(mRenderTarget.offscreenBuffer, "already has layer..."); 34 35 OffscreenBuffer* buffer = mRenderState.layerPool().get(mRenderState, width, height); 36 startRepaintLayer(buffer, Rect(width, height)); 37 return buffer; 38} 39 40void BakedOpRenderer::startRepaintLayer(OffscreenBuffer* offscreenBuffer, const Rect& repaintRect) { 41 LOG_ALWAYS_FATAL_IF(mRenderTarget.offscreenBuffer, "already has layer..."); 42 43 mRenderTarget.offscreenBuffer = offscreenBuffer; 44 45 // create and bind framebuffer 46 mRenderTarget.frameBufferId = mRenderState.createFramebuffer(); 47 mRenderState.bindFramebuffer(mRenderTarget.frameBufferId); 48 49 // attach the texture to the FBO 50 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 51 offscreenBuffer->texture.id(), 0); 52 GL_CHECKPOINT(LOW); 53 54 LOG_ALWAYS_FATAL_IF(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE, 55 "framebuffer incomplete!"); 56 57 // Change the viewport & ortho projection 58 setViewport(offscreenBuffer->viewportWidth, offscreenBuffer->viewportHeight); 59 60 clearColorBuffer(repaintRect); 61} 62 63void BakedOpRenderer::endLayer() { 64 if (mRenderTarget.stencil) { 65 // if stencil was used for clipping, detach it and return it to pool 66 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0); 67 GL_CHECKPOINT(MODERATE); 68 mCaches.renderBufferCache.put(mRenderTarget.stencil); 69 mRenderTarget.stencil = nullptr; 70 } 71 mRenderTarget.lastStencilClip = nullptr; 72 73 mRenderTarget.offscreenBuffer->updateMeshFromRegion(); 74 mRenderTarget.offscreenBuffer = nullptr; // It's in drawLayerOp's hands now. 75 76 // Detach the texture from the FBO 77 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0); 78 GL_CHECKPOINT(LOW); 79 mRenderState.deleteFramebuffer(mRenderTarget.frameBufferId); 80 mRenderTarget.frameBufferId = 0; 81} 82 83OffscreenBuffer* BakedOpRenderer::copyToLayer(const Rect& area) { 84 OffscreenBuffer* buffer = mRenderState.layerPool().get(mRenderState, 85 area.getWidth(), area.getHeight()); 86 if (!area.isEmpty()) { 87 mCaches.textureState().activateTexture(0); 88 mCaches.textureState().bindTexture(buffer->texture.id()); 89 90 glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 91 area.left, mRenderTarget.viewportHeight - area.bottom, 92 area.getWidth(), area.getHeight()); 93 } 94 return buffer; 95} 96 97void BakedOpRenderer::startFrame(uint32_t width, uint32_t height, const Rect& repaintRect) { 98 LOG_ALWAYS_FATAL_IF(mRenderTarget.frameBufferId != 0, "primary framebufferId must be 0"); 99 mRenderState.bindFramebuffer(0); 100 setViewport(width, height); 101 102 if (!mOpaque) { 103 clearColorBuffer(repaintRect); 104 } 105 106 mRenderState.debugOverdraw(true, true); 107} 108 109void BakedOpRenderer::endFrame(const Rect& repaintRect) { 110 if (CC_UNLIKELY(Properties::debugOverdraw)) { 111 ClipRect overdrawClip(repaintRect); 112 Rect viewportRect(mRenderTarget.viewportWidth, mRenderTarget.viewportHeight); 113 // overdraw visualization 114 for (int i = 1; i <= 4; i++) { 115 if (i < 4) { 116 // nth level of overdraw tests for n+1 draws per pixel 117 mRenderState.stencil().enableDebugTest(i + 1, false); 118 } else { 119 // 4th level tests for 4 or higher draws per pixel 120 mRenderState.stencil().enableDebugTest(4, true); 121 } 122 123 SkPaint paint; 124 paint.setColor(mCaches.getOverdrawColor(i)); 125 Glop glop; 126 GlopBuilder(mRenderState, mCaches, &glop) 127 .setRoundRectClipState(nullptr) 128 .setMeshUnitQuad() 129 .setFillPaint(paint, 1.0f) 130 .setTransform(Matrix4::identity(), TransformFlags::None) 131 .setModelViewMapUnitToRect(viewportRect) 132 .build(); 133 renderGlop(nullptr, &overdrawClip, glop); 134 } 135 mRenderState.stencil().disable(); 136 } 137 138 // Note: we leave FBO 0 renderable here, for post-frame-content decoration 139} 140 141void BakedOpRenderer::setViewport(uint32_t width, uint32_t height) { 142 mRenderTarget.viewportWidth = width; 143 mRenderTarget.viewportHeight = height; 144 mRenderTarget.orthoMatrix.loadOrtho(width, height); 145 146 mRenderState.setViewport(width, height); 147 mRenderState.blend().syncEnabled(); 148} 149 150void BakedOpRenderer::clearColorBuffer(const Rect& rect) { 151 if (rect.contains(Rect(mRenderTarget.viewportWidth, mRenderTarget.viewportHeight))) { 152 // Full viewport is being cleared - disable scissor 153 mRenderState.scissor().setEnabled(false); 154 } else { 155 // Requested rect is subset of viewport - scissor to it to avoid over-clearing 156 mRenderState.scissor().setEnabled(true); 157 mRenderState.scissor().set(rect.left, mRenderTarget.viewportHeight - rect.bottom, 158 rect.getWidth(), rect.getHeight()); 159 } 160 glClear(GL_COLOR_BUFFER_BIT); 161 if (!mRenderTarget.frameBufferId) mHasDrawn = true; 162} 163 164Texture* BakedOpRenderer::getTexture(const SkBitmap* bitmap) { 165 Texture* texture = mRenderState.assetAtlas().getEntryTexture(bitmap->pixelRef()); 166 if (!texture) { 167 return mCaches.textureCache.get(bitmap); 168 } 169 return texture; 170} 171 172void BakedOpRenderer::drawRects(const float* rects, int count, const SkPaint* paint) { 173 std::vector<Vertex> vertices; 174 vertices.reserve(count); 175 Vertex* vertex = vertices.data(); 176 177 for (int index = 0; index < count; index += 4) { 178 float l = rects[index + 0]; 179 float t = rects[index + 1]; 180 float r = rects[index + 2]; 181 float b = rects[index + 3]; 182 183 Vertex::set(vertex++, l, t); 184 Vertex::set(vertex++, r, t); 185 Vertex::set(vertex++, l, b); 186 Vertex::set(vertex++, r, b); 187 } 188 189 LOG_ALWAYS_FATAL_IF(mRenderTarget.frameBufferId != 0, "decoration only supported for FBO 0"); 190 // TODO: Currently assume full FBO damage, due to FrameInfoVisualizer::unionDirty. 191 // Should should scissor safely. 192 mRenderState.scissor().setEnabled(false); 193 Glop glop; 194 GlopBuilder(mRenderState, mCaches, &glop) 195 .setRoundRectClipState(nullptr) 196 .setMeshIndexedQuads(vertices.data(), count / 4) 197 .setFillPaint(*paint, 1.0f) 198 .setTransform(Matrix4::identity(), TransformFlags::None) 199 .setModelViewIdentityEmptyBounds() 200 .build(); 201 mRenderState.render(glop, mRenderTarget.orthoMatrix); 202} 203 204// clears and re-fills stencil with provided rendertarget space quads, 205// and then put stencil into test mode 206void BakedOpRenderer::setupStencilQuads(std::vector<Vertex>& quadVertices, 207 int incrementThreshold) { 208 mRenderState.stencil().enableWrite(incrementThreshold); 209 mRenderState.stencil().clear(); 210 Glop glop; 211 GlopBuilder(mRenderState, mCaches, &glop) 212 .setRoundRectClipState(nullptr) 213 .setMeshIndexedQuads(quadVertices.data(), quadVertices.size() / 4) 214 .setFillBlack() 215 .setTransform(Matrix4::identity(), TransformFlags::None) 216 .setModelViewIdentityEmptyBounds() 217 .build(); 218 mRenderState.render(glop, mRenderTarget.orthoMatrix); 219 mRenderState.stencil().enableTest(incrementThreshold); 220} 221 222void BakedOpRenderer::setupStencilRectList(const ClipBase* clip) { 223 LOG_ALWAYS_FATAL_IF(clip->mode != ClipMode::RectangleList, "can't rectlist clip without rectlist"); 224 auto&& rectList = reinterpret_cast<const ClipRectList*>(clip)->rectList; 225 int quadCount = rectList.getTransformedRectanglesCount(); 226 std::vector<Vertex> rectangleVertices; 227 rectangleVertices.reserve(quadCount * 4); 228 for (int i = 0; i < quadCount; i++) { 229 const TransformedRectangle& tr(rectList.getTransformedRectangle(i)); 230 const Matrix4& transform = tr.getTransform(); 231 Rect bounds = tr.getBounds(); 232 if (transform.rectToRect()) { 233 // If rectToRect, can simply map bounds before storing verts 234 transform.mapRect(bounds); 235 bounds.doIntersect(clip->rect); 236 if (bounds.isEmpty()) { 237 continue; // will be outside of scissor, skip 238 } 239 } 240 241 rectangleVertices.push_back(Vertex{bounds.left, bounds.top}); 242 rectangleVertices.push_back(Vertex{bounds.right, bounds.top}); 243 rectangleVertices.push_back(Vertex{bounds.left, bounds.bottom}); 244 rectangleVertices.push_back(Vertex{bounds.right, bounds.bottom}); 245 246 if (!transform.rectToRect()) { 247 // If not rectToRect, must map each point individually 248 for (auto cur = rectangleVertices.end() - 4; cur < rectangleVertices.end(); cur++) { 249 transform.mapPoint(cur->x, cur->y); 250 } 251 } 252 } 253 setupStencilQuads(rectangleVertices, rectList.getTransformedRectanglesCount()); 254} 255 256void BakedOpRenderer::setupStencilRegion(const ClipBase* clip) { 257 LOG_ALWAYS_FATAL_IF(clip->mode != ClipMode::Region, "can't region clip without region"); 258 auto&& region = reinterpret_cast<const ClipRegion*>(clip)->region; 259 260 std::vector<Vertex> regionVertices; 261 SkRegion::Cliperator it(region, clip->rect.toSkIRect()); 262 while (!it.done()) { 263 const SkIRect& r = it.rect(); 264 regionVertices.push_back(Vertex{(float)r.fLeft, (float)r.fTop}); 265 regionVertices.push_back(Vertex{(float)r.fRight, (float)r.fTop}); 266 regionVertices.push_back(Vertex{(float)r.fLeft, (float)r.fBottom}); 267 regionVertices.push_back(Vertex{(float)r.fRight, (float)r.fBottom}); 268 it.next(); 269 } 270 setupStencilQuads(regionVertices, 0); 271} 272 273void BakedOpRenderer::prepareRender(const Rect* dirtyBounds, const ClipBase* clip) { 274 // Prepare scissor (done before stencil, to simplify filling stencil) 275 mRenderState.scissor().setEnabled(clip != nullptr); 276 if (clip) { 277 mRenderState.scissor().set(mRenderTarget.viewportHeight, clip->rect); 278 } 279 280 // If stencil may be used for clipping, enable it, fill it, or disable it as appropriate 281 if (CC_LIKELY(!Properties::debugOverdraw)) { 282 // only modify stencil mode and content when it's not used for overdraw visualization 283 if (CC_UNLIKELY(clip && clip->mode != ClipMode::Rectangle)) { 284 // NOTE: this pointer check is only safe for non-rect clips, 285 // since rect clips may be created on the stack 286 if (mRenderTarget.lastStencilClip != clip) { 287 // Stencil needed, but current stencil isn't up to date 288 mRenderTarget.lastStencilClip = clip; 289 290 if (mRenderTarget.frameBufferId != 0 && !mRenderTarget.stencil) { 291 OffscreenBuffer* layer = mRenderTarget.offscreenBuffer; 292 mRenderTarget.stencil = mCaches.renderBufferCache.get( 293 Stencil::getLayerStencilFormat(), 294 layer->texture.width(), layer->texture.height()); 295 // stencil is bound + allocated - associate it with current FBO 296 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, 297 GL_RENDERBUFFER, mRenderTarget.stencil->getName()); 298 } 299 300 if (clip->mode == ClipMode::RectangleList) { 301 setupStencilRectList(clip); 302 } else { 303 setupStencilRegion(clip); 304 } 305 } else { 306 // stencil is up to date - just need to ensure it's enabled (since an unclipped 307 // or scissor-only clipped op may have been drawn, disabling the stencil) 308 int incrementThreshold = 0; 309 if (CC_LIKELY(clip->mode == ClipMode::RectangleList)) { 310 auto&& rectList = reinterpret_cast<const ClipRectList*>(clip)->rectList; 311 incrementThreshold = rectList.getTransformedRectanglesCount(); 312 } 313 mRenderState.stencil().enableTest(incrementThreshold); 314 } 315 } else { 316 // either scissor or no clip, so disable stencil test 317 mRenderState.stencil().disable(); 318 } 319 } 320 321 if (dirtyBounds) { 322 // dirty offscreenbuffer if present 323 dirtyRenderTarget(*dirtyBounds); 324 } 325} 326 327void BakedOpRenderer::renderGlop(const Rect* dirtyBounds, const ClipBase* clip, 328 const Glop& glop) { 329 prepareRender(dirtyBounds, clip); 330 mRenderState.render(glop, mRenderTarget.orthoMatrix); 331 if (!mRenderTarget.frameBufferId) mHasDrawn = true; 332} 333 334void BakedOpRenderer::renderFunctor(const FunctorOp& op, const BakedOpState& state) { 335 prepareRender(&state.computedState.clippedBounds, state.computedState.getClipIfNeeded()); 336 337 DrawGlInfo info; 338 auto&& clip = state.computedState.clipRect(); 339 info.clipLeft = clip.left; 340 info.clipTop = clip.top; 341 info.clipRight = clip.right; 342 info.clipBottom = clip.bottom; 343 info.isLayer = offscreenRenderTarget(); 344 info.width = mRenderTarget.viewportWidth; 345 info.height = mRenderTarget.viewportHeight; 346 state.computedState.transform.copyTo(&info.transform[0]); 347 348 mRenderState.invokeFunctor(op.functor, DrawGlInfo::kModeDraw, &info); 349} 350 351void BakedOpRenderer::dirtyRenderTarget(const Rect& uiDirty) { 352 if (mRenderTarget.offscreenBuffer) { 353 mRenderTarget.offscreenBuffer->dirty(uiDirty); 354 } 355} 356 357} // namespace uirenderer 358} // namespace android 359