blob: 73082c1af6e5d6efe0aea186140dd8cab9418570 [file] [log] [blame]
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "OpenGLRenderer"
#include <utils/Log.h>
#include "DisplayList.h"
#include "DeferredDisplayList.h"
#include "Layer.h"
#include "LayerRenderer.h"
#include "OpenGLRenderer.h"
#include "Caches.h"
namespace android {
namespace uirenderer {
Layer::Layer(const uint32_t layerWidth, const uint32_t layerHeight):
caches(Caches::getInstance()), texture(caches) {
mesh = NULL;
meshIndices = NULL;
meshElementCount = 0;
cacheable = true;
dirty = false;
textureLayer = false;
renderTarget = GL_TEXTURE_2D;
texture.width = layerWidth;
texture.height = layerHeight;
colorFilter = NULL;
deferredUpdateScheduled = false;
renderer = NULL;
displayList = NULL;
fbo = 0;
stencil = NULL;
debugDrawUpdate = false;
hasDrawnSinceUpdate = false;
deferredList = NULL;
caches.resourceCache.incrementRefcount(this);
}
Layer::~Layer() {
if (colorFilter) caches.resourceCache.decrementRefcount(colorFilter);
removeFbo();
deleteTexture();
delete[] mesh;
delete[] meshIndices;
delete deferredList;
}
uint32_t Layer::computeIdealWidth(uint32_t layerWidth) {
return uint32_t(ceilf(layerWidth / float(LAYER_SIZE)) * LAYER_SIZE);
}
uint32_t Layer::computeIdealHeight(uint32_t layerHeight) {
return uint32_t(ceilf(layerHeight / float(LAYER_SIZE)) * LAYER_SIZE);
}
bool Layer::resize(const uint32_t width, const uint32_t height) {
uint32_t desiredWidth = computeIdealWidth(width);
uint32_t desiredHeight = computeIdealWidth(height);
if (desiredWidth <= getWidth() && desiredHeight <= getHeight()) {
return true;
}
const uint32_t maxTextureSize = caches.maxTextureSize;
if (desiredWidth > maxTextureSize || desiredHeight > maxTextureSize) {
ALOGW("Layer exceeds max. dimensions supported by the GPU (%dx%d, max=%dx%d)",
desiredWidth, desiredHeight, maxTextureSize, maxTextureSize);
return false;
}
uint32_t oldWidth = getWidth();
uint32_t oldHeight = getHeight();
setSize(desiredWidth, desiredHeight);
if (fbo) {
caches.activeTexture(0);
bindTexture();
allocateTexture();
if (glGetError() != GL_NO_ERROR) {
setSize(oldWidth, oldHeight);
return false;
}
}
if (stencil) {
stencil->bind();
stencil->resize(desiredWidth, desiredHeight);
if (glGetError() != GL_NO_ERROR) {
setSize(oldWidth, oldHeight);
return false;
}
}
return true;
}
void Layer::removeFbo(bool flush) {
if (stencil) {
GLuint previousFbo;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, (GLint*) &previousFbo);
if (fbo != previousFbo) glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
if (fbo != previousFbo) glBindFramebuffer(GL_FRAMEBUFFER, previousFbo);
caches.renderBufferCache.put(stencil);
stencil = NULL;
}
if (fbo) {
if (flush) LayerRenderer::flushLayer(this);
// If put fails the cache will delete the FBO
caches.fboCache.put(fbo);
fbo = 0;
}
}
void Layer::setPaint(SkPaint* paint) {
OpenGLRenderer::getAlphaAndModeDirect(paint, &alpha, &mode);
}
void Layer::setColorFilter(SkiaColorFilter* filter) {
if (colorFilter) {
caches.resourceCache.decrementRefcount(colorFilter);
}
colorFilter = filter;
if (colorFilter) {
caches.resourceCache.incrementRefcount(colorFilter);
}
}
void Layer::bindTexture() const {
if (texture.id) {
caches.bindTexture(renderTarget, texture.id);
}
}
void Layer::bindStencilRenderBuffer() const {
if (stencil) {
stencil->bind();
}
}
void Layer::generateTexture() {
if (!texture.id) {
glGenTextures(1, &texture.id);
}
}
void Layer::deleteTexture() {
if (texture.id) {
texture.deleteTexture();
texture.id = 0;
}
}
void Layer::clearTexture() {
texture.id = 0;
}
void Layer::allocateTexture() {
#if DEBUG_LAYERS
ALOGD(" Allocate layer: %dx%d", getWidth(), getHeight());
#endif
if (texture.id) {
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glTexImage2D(renderTarget, 0, GL_RGBA, getWidth(), getHeight(), 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
}
}
void Layer::defer() {
const float width = layer.getWidth();
const float height = layer.getHeight();
if (dirtyRect.isEmpty() || (dirtyRect.left <= 0 && dirtyRect.top <= 0 &&
dirtyRect.right >= width && dirtyRect.bottom >= height)) {
dirtyRect.set(0, 0, width, height);
}
if (deferredList) {
deferredList->reset(dirtyRect);
} else {
deferredList = new DeferredDisplayList(dirtyRect);
}
DeferStateStruct deferredState(*deferredList, *renderer,
DisplayList::kReplayFlag_ClipChildren);
renderer->initViewport(width, height);
renderer->setupFrameState(dirtyRect.left, dirtyRect.top,
dirtyRect.right, dirtyRect.bottom, !isBlend());
displayList->defer(deferredState, 0);
deferredUpdateScheduled = false;
}
void Layer::cancelDefer() {
renderer = NULL;
displayList = NULL;
deferredUpdateScheduled = false;
if (deferredList) {
delete deferredList;
deferredList = NULL;
}
}
void Layer::flush() {
// renderer is checked as layer may be destroyed/put in layer cache with flush scheduled
if (deferredList && renderer) {
renderer->setViewport(layer.getWidth(), layer.getHeight());
renderer->prepareDirty(dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom,
!isBlend());
deferredList->flush(*renderer, dirtyRect);
renderer->finish();
renderer = NULL;
dirtyRect.setEmpty();
displayList = NULL;
}
}
void Layer::render() {
renderer->setViewport(layer.getWidth(), layer.getHeight());
renderer->prepareDirty(dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom,
!isBlend());
renderer->drawDisplayList(displayList, dirtyRect, DisplayList::kReplayFlag_ClipChildren);
renderer->finish();
renderer = NULL;
dirtyRect.setEmpty();
deferredUpdateScheduled = false;
displayList = NULL;
}
}; // namespace uirenderer
}; // namespace android