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Add extra buffer rows to the grid to load images ahead

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This commit is contained in:
Koerty 2018-04-15 15:20:49 +02:00 committed by Benjamin D
parent 0928498ef2
commit 5913c9465e
2 changed files with 85 additions and 28 deletions
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2
es-core/src/Window.cpp
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@ -209,7 +209,7 @@ void Window::update(int deltaTime)
// vram
float textureVramUsageMb = TextureResource::getTotalMemUsage() / 1000.0f / 1000.0f;
float textureTotalUsageMb = TextureResource::getTotalTextureSize() / 1000.0f / 1000.0f;
float fontVramUsageMb = Font::getTotalMemUsage() / 1000.0f / 1000.0f;;
float fontVramUsageMb = Font::getTotalMemUsage() / 1000.0f / 1000.0f;
ss << "\nFont VRAM: " << fontVramUsageMb << " Tex VRAM: " << textureVramUsageMb <<
" Tex Max: " << textureTotalUsageMb;

111
es-core/src/components/ImageGridComponent.h
View file

@ -23,6 +23,7 @@ class ImageGridComponent : public IList<ImageGridData, T>
{
protected:
using IList<ImageGridData, T>::mEntries;
using IList<ImageGridData, T>::mScrollTier;
using IList<ImageGridData, T>::listUpdate;
using IList<ImageGridData, T>::listInput;
using IList<ImageGridData, T>::listRenderTitleOverlay;
@ -47,7 +48,6 @@ public:
virtual void applyTheme(const std::shared_ptr<ThemeData>& theme, const std::string& view, const std::string& element, unsigned int properties) override;
void onSizeChanged() override;
inline void setCursorChangedCallback(const std::function<void(CursorState state)>& func) { mCursorChangedCallback = func; }
protected:
@ -57,11 +57,15 @@ private:
// TILES
void buildTiles();
void updateTiles();
void updateTileAtPos(int tilePos, int imgPos, int bufferTop, int bufferBot);
int getStartPosition() const;
void calcGridDimension();
// IMAGES & ENTRIES
const int texBuffersBehind[4] = { 1, 1, 1, 1 };
const int texBuffersForward[4] = { 1, 2, 3, 3 };
bool mEntriesDirty;
int mLastCursor;
std::shared_ptr<TextureResource> mDefaultGameTexture;
std::shared_ptr<TextureResource> mDefaultFolderTexture;
@ -84,6 +88,7 @@ ImageGridComponent<T>::ImageGridComponent(Window* window) : IList<ImageGridData,
Vector2f screen = Vector2f((float)Renderer::getScreenWidth(), (float)Renderer::getScreenHeight());
mEntriesDirty = true;
mLastCursor = 0;
mDefaultGameTexture = TextureResource::get(":/blank_game.png");
mDefaultFolderTexture = TextureResource::get(":/folder.png");
@ -179,7 +184,6 @@ void ImageGridComponent<T>::render(const Transform4x4f& parentTrans)
Renderer::pushClipRect(pos, size);
// Render all the tiles but the selected one
std::shared_ptr<GridTileComponent> selectedTile = NULL;
for(auto it = mTiles.begin(); it != mTiles.end(); it++)
{
@ -198,6 +202,8 @@ void ImageGridComponent<T>::render(const Transform4x4f& parentTrans)
if (selectedTile != NULL)
selectedTile->render(trans);
listRenderTitleOverlay(trans);
GuiComponent::renderChildren(trans);
}
@ -306,8 +312,8 @@ void ImageGridComponent<T>::buildTiles()
calcGridDimension();
Vector2f startPosition = mTileSize / 2;
Vector2f tileDistance = mTileSize + mMargin;
Vector2f startPosition = mTileSize / 2 - Vector2f(0, tileDistance.y() * texBuffersForward[3]);
int X, Y;
@ -342,26 +348,69 @@ void ImageGridComponent<T>::updateTiles()
if (!mTiles.size())
return;
int img = getStartPosition();
for(int ti = 0; ti < mTiles.size(); ti++)
// Stop updating the tiles at highest scroll speed
if (mScrollTier == 3)
{
std::shared_ptr<GridTileComponent> tile = mTiles.at(ti);
// If we have more tiles than we have to display images on screen, hide them
if(img >= size())
for (int ti = 0; ti < mTiles.size(); ti++)
{
std::shared_ptr<GridTileComponent> tile = mTiles.at(ti);
tile->setSelected(false);
tile->setImage("");
tile->setImage(mDefaultGameTexture);
tile->setVisible(false);
continue;
}
return;
}
tile->setSelected(img == mCursor);
tile->setImage(mEntries.at(img).data.texture);
// 1 if scrolling down, -1 if scrolling up
int scrollDirection = mCursor >= mLastCursor ? 1 : -1;
// If going down, update from top to bottom
// If going up, update from bottom to top
int ti = scrollDirection == 1 ? 0 : mTiles.size() - 1;
int end = scrollDirection == 1 ? mTiles.size() : -1;
int img = getStartPosition();
if (scrollDirection == -1)
img += mTiles.size() - 1;
// Calculate buffer size depending on scroll speed and direction
int bufferBehind = (texBuffersForward[3] - texBuffersBehind[mScrollTier]) * mGridDimension.x();
int bufferForward = (texBuffersForward[3] - texBuffersForward[mScrollTier]) * mGridDimension.x();
int bufferTop = scrollDirection == 1 ? bufferBehind : bufferForward;
int bufferBot = scrollDirection == 1 ? bufferForward : bufferBehind;
// Update the tiles
while (ti != end)
{
updateTileAtPos(ti, img, bufferTop, bufferBot);
ti += scrollDirection;
img += scrollDirection;
}
mLastCursor = mCursor;
}
template<typename T>
void ImageGridComponent<T>::updateTileAtPos(int tilePos, int imgPos, int bufferTop, int bufferBot)
{
std::shared_ptr<GridTileComponent> tile = mTiles.at(tilePos);
// If we have more tiles than we have to display images on screen, hide them
if(imgPos < 0 || imgPos >= size()
|| tilePos < bufferTop || tilePos >= mTiles.size() - bufferBot) // Same for tiles out of the buffer
{
tile->setSelected(false);
tile->setImage("");
tile->setVisible(false);
}
else
{
tile->setSelected(imgPos == mCursor);
tile->setImage(mEntries.at(imgPos).data.texture);
tile->setVisible(true);
img++;
}
}
@ -373,23 +422,28 @@ int ImageGridComponent<T>::getStartPosition() const
// case, whenever we have an integer number of rows or not (the last partial row is ignored when
// calculating position and the cursor shouldn't end up in this row when close to the end)
int partialRow = (int)mLastRowPartial;
if ((int)mEntries.size() < mGridDimension.x() * (mGridDimension.y() - (int)mLastRowPartial))
partialRow = 0;
int cursorRow = mCursor / mGridDimension.x();
int start = (cursorRow - ((mGridDimension.y() - partialRow) / 2)) * mGridDimension.x();
// If we are at the end put the row as close as we can and no higher, using the following formula
// Where E is the nb of entries, X the grid x dim (nb of column), Y the grid y dim (nb of line)
// start = first tile of last row - nb column * (nb line - 1)
// = (E - 1) / X * X - X * (Y - 1)
// = X * ((E - 1) / X - Y + 1)
if(start + (mGridDimension.x() * (mGridDimension.y() - partialRow)) >= (int)mEntries.size())
start = mGridDimension.x() * (((int)mEntries.size() - 1) / mGridDimension.x() - mGridDimension.y() + 1 + partialRow);
// Number of tiles which are just used as a buffer for texture loading
int bufferSize = texBuffersForward[3] * mGridDimension.x();
if(start < 0)
start = 0;
if(start + (mGridDimension.x() * (mGridDimension.y() - partialRow)) >= (int)mEntries.size() + bufferSize)
{
// If we are at the end put the row as close as we can and no higher, using the following formula
// Where E is the nb of entries, X the grid x dim (nb of column), Y the grid y dim (nb of line)
// start = first tile of last row - nb column * (nb line - 1)
// = (E - 1) / X * X - X * (Y - 1)
// = X * ((E - 1) / X - Y + 1)
start = mGridDimension.x() * (((int)mEntries.size() - 1) / mGridDimension.x() - mGridDimension.y() + 1 + partialRow) + bufferSize;
}
if(start < -bufferSize)
{
start = -bufferSize;
}
return start;
}
@ -416,6 +470,9 @@ void ImageGridComponent<T>::calcGridDimension()
LOG(LogError) << "Theme defined grid X dimension below 1";
if (mGridDimension.y() < 1)
LOG(LogError) << "Theme defined grid Y dimension below 1";
// Add extra tiles to both side depending on max texture buffer
mGridDimension.y() += texBuffersForward[3] * 2;
};