1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/opengl/TexturePoolOGL.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,118 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#include "TexturePoolOGL.h"
1.9 +#include <stdlib.h> // for malloc
1.10 +#include "GLContext.h" // for GLContext
1.11 +#include "mozilla/Monitor.h" // for Monitor, MonitorAutoLock
1.12 +#include "mozilla/mozalloc.h" // for operator delete, etc
1.13 +#include "nsDebug.h" // for NS_ASSERTION, NS_ERROR, etc
1.14 +#include "nsDeque.h" // for nsDeque
1.15 +
1.16 +#define TEXTURE_POOL_SIZE 10
1.17 +
1.18 +namespace mozilla {
1.19 +namespace gl {
1.20 +
1.21 +static GLContext* sActiveContext = nullptr;
1.22 +
1.23 +static Monitor* sMonitor = nullptr;
1.24 +static nsDeque* sTextures = nullptr;
1.25 +
1.26 +GLuint TexturePoolOGL::AcquireTexture()
1.27 +{
1.28 + NS_ASSERTION(sMonitor, "not initialized");
1.29 +
1.30 + MonitorAutoLock lock(*sMonitor);
1.31 +
1.32 + if (!sActiveContext) {
1.33 + // Wait for a context
1.34 + sMonitor->Wait();
1.35 +
1.36 + if (!sActiveContext)
1.37 + return 0;
1.38 + }
1.39 +
1.40 + GLuint texture = 0;
1.41 + if (sActiveContext->IsOwningThreadCurrent()) {
1.42 + sActiveContext->MakeCurrent();
1.43 +
1.44 + sActiveContext->fGenTextures(1, &texture);
1.45 + } else {
1.46 + while (sTextures->GetSize() == 0) {
1.47 + NS_WARNING("Waiting for texture");
1.48 + sMonitor->Wait();
1.49 + }
1.50 +
1.51 + GLuint* popped = (GLuint*) sTextures->Pop();
1.52 + if (!popped) {
1.53 + NS_ERROR("Failed to pop texture pool item");
1.54 + return 0;
1.55 + }
1.56 +
1.57 + texture = *popped;
1.58 + delete popped;
1.59 +
1.60 + NS_ASSERTION(texture, "Failed to retrieve texture from pool");
1.61 + }
1.62 +
1.63 + return texture;
1.64 +}
1.65 +
1.66 +static void Clear()
1.67 +{
1.68 + if (!sActiveContext)
1.69 + return;
1.70 +
1.71 + sActiveContext->MakeCurrent();
1.72 +
1.73 + GLuint* item;
1.74 + while (sTextures->GetSize()) {
1.75 + item = (GLuint*)sTextures->Pop();
1.76 + sActiveContext->fDeleteTextures(1, item);
1.77 + delete item;
1.78 + }
1.79 +}
1.80 +
1.81 +void TexturePoolOGL::Fill(GLContext* aContext)
1.82 +{
1.83 + NS_ASSERTION(aContext, "NULL GLContext");
1.84 + NS_ASSERTION(sMonitor, "not initialized");
1.85 +
1.86 + MonitorAutoLock lock(*sMonitor);
1.87 +
1.88 + if (sActiveContext != aContext) {
1.89 + Clear();
1.90 + sActiveContext = aContext;
1.91 + }
1.92 +
1.93 + if (sTextures->GetSize() == TEXTURE_POOL_SIZE)
1.94 + return;
1.95 +
1.96 + sActiveContext->MakeCurrent();
1.97 +
1.98 + GLuint* texture = nullptr;
1.99 + while (sTextures->GetSize() < TEXTURE_POOL_SIZE) {
1.100 + texture = (GLuint*)malloc(sizeof(GLuint));
1.101 + sActiveContext->fGenTextures(1, texture);
1.102 + sTextures->Push((void*) texture);
1.103 + }
1.104 +
1.105 + sMonitor->NotifyAll();
1.106 +}
1.107 +
1.108 +void TexturePoolOGL::Init()
1.109 +{
1.110 + sMonitor = new Monitor("TexturePoolOGL.sMonitor");
1.111 + sTextures = new nsDeque();
1.112 +}
1.113 +
1.114 +void TexturePoolOGL::Shutdown()
1.115 +{
1.116 + delete sMonitor;
1.117 + delete sTextures;
1.118 +}
1.119 +
1.120 +} // gl
1.121 +} // mozilla
