예제 #1
0
unsigned TextureManager::requestTexture(TextureToken token, IntSize size, unsigned format, bool* newTexture)
{
    if (size.width() > m_maxTextureSize || size.height() > m_maxTextureSize)
        return 0;

    TextureMap::iterator it = m_textures.find(token);
    if (it != m_textures.end()) {
        ASSERT(it->second.size != size || it->second.format != format);
        removeTexture(token, it->second);
    }

    size_t memoryRequiredBytes = memoryUseBytes(size, format);
    if (memoryRequiredBytes > m_memoryLimitBytes || !reduceMemoryToLimit(m_memoryLimitBytes - memoryRequiredBytes))
        return 0;

    unsigned textureId = m_context->createTexture();
    GLC(m_context.get(), textureId = m_context->createTexture());
    GLC(m_context.get(), m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, textureId));
    // Do basic linear filtering on resize.
    GLC(m_context.get(), m_context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR));
    GLC(m_context.get(), m_context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR));
    // NPOT textures in GL ES only work when the wrap mode is set to GraphicsContext3D::CLAMP_TO_EDGE.
    GLC(m_context.get(), m_context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE));
    GLC(m_context.get(), m_context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE));
    GLC(m_context.get(), m_context->texImage2DResourceSafe(GraphicsContext3D::TEXTURE_2D, 0, format, size.width(), size.height(), 0, format, GraphicsContext3D::UNSIGNED_BYTE));
    TextureInfo info;
    info.size = size;
    info.format = format;
    info.textureId = textureId;
    info.isProtected = true;
    addTexture(token, info);
    return textureId;
}
예제 #2
0
bool TextureManager::requestTexture(TextureToken token, IntSize size, unsigned format)
{
    if (size.width() > m_maxTextureSize || size.height() > m_maxTextureSize)
        return false;

    TextureMap::iterator it = m_textures.find(token);
    if (it != m_textures.end()) {
        ASSERT(it->second.size != size || it->second.format != format);
        removeTexture(token, it->second);
    }

    size_t memoryRequiredBytes = memoryUseBytes(size, format);
    if (memoryRequiredBytes > m_maxMemoryLimitBytes)
        return false;

    reduceMemoryToLimit(m_maxMemoryLimitBytes - memoryRequiredBytes);
    if (m_memoryUseBytes + memoryRequiredBytes > m_maxMemoryLimitBytes)
        return false;

    TextureInfo info;
    info.size = size;
    info.format = format;
    info.textureId = 0;
    info.isProtected = true;
#ifndef NDEBUG
    info.allocator = 0;
#endif
    addTexture(token, info);
    return true;
}
예제 #3
0
bool TextureManager::requestTexture(TextureToken token, IntSize size, unsigned format, unsigned& textureId)
{
    textureId = 0;

    if (size.width() > m_maxTextureSize || size.height() > m_maxTextureSize)
        return false;

    TextureMap::iterator it = m_textures.find(token);
    if (it != m_textures.end()) {
        ASSERT(it->second.size != size || it->second.format != format);
        removeTexture(token, it->second);
    }

    size_t memoryRequiredBytes = memoryUseBytes(size, format);
    if (memoryRequiredBytes > m_maxMemoryLimitBytes)
        return false;

    reduceMemoryToLimit(m_maxMemoryLimitBytes - memoryRequiredBytes);
    if (m_memoryUseBytes + memoryRequiredBytes > m_maxMemoryLimitBytes)
        return false;

    TextureInfo info;
    info.size = size;
    info.format = format;
    info.textureId = 0;
    info.isProtected = true;
#ifndef NDEBUG
    info.allocator = 0;
#endif
    // Avoid churning by reusing the texture if it is about to be reclaimed and
    // it has the same size and format as the requesting texture.
    if (m_memoryUseBytes + memoryRequiredBytes > m_preferredMemoryLimitBytes) {
        textureId = replaceTexture(token, info);
        if (textureId)
            return true;
    }
    addTexture(token, info);
    return true;
}
예제 #4
0
void TextureManager::evictAndDeleteAllTextures(TextureAllocator* allocator)
{
    unprotectAllTextures();
    reduceMemoryToLimit(0);
    deleteEvictedTextures(allocator);
}
예제 #5
0
void TextureManager::setMaxMemoryLimitBytes(size_t memoryLimitBytes)
{
    reduceMemoryToLimit(memoryLimitBytes);
    ASSERT(currentMemoryUseBytes() <= memoryLimitBytes);
    m_maxMemoryLimitBytes = memoryLimitBytes;
}