本文整理汇总了C++中PixelBox::GetDataSize方法的典型用法代码示例。如果您正苦于以下问题：C++ PixelBox::GetDataSize方法的具体用法？C++ PixelBox::GetDataSize怎么用？C++ PixelBox::GetDataSize使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PixelBox的用法示例。
在下文中一共展示了PixelBox::GetDataSize方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Update
void TextureViewGL::Update(nextar::RenderContext* rc, uint32 msg,
ContextObject::ContextParamPtr params) {
RenderContext_Base_GL* gl = static_cast<RenderContext_Base_GL*>(rc);
if (msg & TextureBase::MSG_TEX_READ) {
ReadPixels(gl, *const_cast<TextureBase::ReadPixelUpdateParams*>(
reinterpret_cast<const TextureBase::ReadPixelUpdateParams*>(params)));
return;
}
// todo Incorrect implementation
if (msg & (TextureBase::MSG_TEX_CREATE|TextureBase::MSG_TEX_UPLOAD)) {
const TextureBase::UpdateParams& textureParams =
*reinterpret_cast<const TextureBase::UpdateParams*>(params);
PixelFormat imageFormat = textureParams.textureFormat;
if (textureParams.image)
imageFormat = textureParams.image->GetFormat();
if (!IsCreated()) {
pixelFormat = RenderContext_Base_GL::GetGlPixelFormat(imageFormat,
textureParams.textureFormat);
if (pixelFormat.internalFormat == GL_NONE) {
Warn(
"Currently image should be of compatible format with texture!");
return;
}
texture = gl->CreateTexture();
target = RenderContext_Base_GL::GetGlTextureType(
textureParams.type);
gl->ActivateTexture(target, texture);
if (textureParams.textureFlags
& TextureBase::PRE_ALLOCATE_STORAGE) {
gl->AllocateTexture(target,
(GLint) textureParams.desc.maxMipMapCount,
pixelFormat.internalFormat, textureParams.desc.maxWidth,
textureParams.desc.maxHeight,
textureParams.desc.maxDepth);
}
} else
gl->ActivateTexture(target, texture);
if (textureParams.image && (msg & TextureBase::MSG_TEX_UPLOAD)) {
Image& img = *textureParams.image;
uint32 numMips = img.GetNumMipMaps();
uint32 numFaces = img.GetNumFaces();
NEX_ASSERT(numFaces == 1 || numFaces == 6);
GLenum realTarget = target;
if (target == GL_TEXTURE_CUBE_MAP
|| target == GL_TEXTURE_CUBE_MAP_ARRAY)
realTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X;
for (uint32 f = 0; f < numFaces; ++f) {
for (uint32 i = 0; i < numMips; ++i) {
PixelBox box = img.GetPixelBox(f, i);
if (!box.IsSimpleArray()) {
Warn("Pixel box has pixel padding. Cannot copy.");
continue;
}
if (textureParams.textureFlags
& TextureBase::PRE_ALLOCATE_STORAGE)
gl->WriteTextureLevel(realTarget + f,
(GLint) (textureParams.baseMipLevel + i),
pixelFormat, box.GetWidth(), box.GetHeight(),
box.GetDepth(), box.data, box.GetDataSize());
else
gl->AllocateTextureLevel(realTarget + f,
(GLint) (textureParams.baseMipLevel + i),
pixelFormat, box.GetWidth(), box.GetHeight(),
box.GetDepth(), box.data, box.GetDataSize());
}
gl->SetMipLevels(realTarget + f, textureParams.baseMipLevel,
textureParams.lowestMipLevel);
}
// update number of mip levels
}
}
else if (msg & TextureBase::MSG_TEX_RESIZE) {
if (IsCreated())
gl->DestroyTexture(texture);
const TextureBase::ResizeParams& textureParams =
*reinterpret_cast<const TextureBase::ResizeParams*>(params);
texture = gl->CreateTexture();
gl->ActivateTexture(target, texture);
gl->AllocateTexture(target,
(GLint) textureParams.desc.maxMipMapCount,
pixelFormat.internalFormat, textureParams.desc.maxWidth,
textureParams.desc.maxHeight,
textureParams.desc.maxDepth);
}
}