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SpriteBatch now always grows by a set amount to reduce the number of times it needs to resize it's arrays

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This commit is contained in:
Gered 2013-04-03 11:21:06 -04:00
parent 7b6f144f61
commit 96c6958674
2 changed files with 22 additions and 19 deletions
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38
src/framework/graphics/spritebatch.cpp
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@ -397,7 +397,9 @@ void SpriteBatch::AddSprite(const Texture *texture, int destLeft, int destTop, i
return; return;
} }
CheckForNewSpriteSpace(); if (GetRemainingSpriteSpaces() < 1)
AddMoreSpriteSpace(16);
SetSpriteInfo(m_currentSpritePointer, texture, destLeftF, destTopF, destRightF, destBottomF, texLeft, texTop, texRight, texBottom, color); SetSpriteInfo(m_currentSpritePointer, texture, destLeftF, destTopF, destRightF, destBottomF, texLeft, texTop, texRight, texBottom, color);
++m_currentSpritePointer; ++m_currentSpritePointer;
} }
@ -417,7 +419,9 @@ void SpriteBatch::AddSprite(const Texture *texture, int destLeft, int destTop, i
return; return;
} }
CheckForNewSpriteSpace(); if (GetRemainingSpriteSpaces() < 1)
AddMoreSpriteSpace(16);
SetSpriteInfo(m_currentSpritePointer, texture, destLeftF, destTopF, destRightF, destBottomF, texCoordLeft, texCoordTop, texCoordRight, texCoordBottom, color); SetSpriteInfo(m_currentSpritePointer, texture, destLeftF, destTopF, destRightF, destBottomF, texCoordLeft, texCoordTop, texCoordRight, texCoordBottom, color);
++m_currentSpritePointer; ++m_currentSpritePointer;
} }
@ -431,8 +435,10 @@ void SpriteBatch::AddSprite(const Texture *texture, float destLeft, float destTo
if (!ClipSpriteCoords(destLeft, destTop, destRight, destBottom, texCoordLeft, texCoordTop, texCoordRight, texCoordBottom)) if (!ClipSpriteCoords(destLeft, destTop, destRight, destBottom, texCoordLeft, texCoordTop, texCoordRight, texCoordBottom))
return; return;
} }
if (GetRemainingSpriteSpaces() < 1)
AddMoreSpriteSpace(16);
CheckForNewSpriteSpace();
SetSpriteInfo(m_currentSpritePointer, texture, destLeft, destTop, destRight, destBottom, texCoordLeft, texCoordTop, texCoordRight, texCoordBottom, color); SetSpriteInfo(m_currentSpritePointer, texture, destLeft, destTop, destRight, destBottom, texCoordLeft, texCoordTop, texCoordRight, texCoordBottom, color);
++m_currentSpritePointer; ++m_currentSpritePointer;
} }
@ -603,23 +609,19 @@ void SpriteBatch::RenderQueueRange(uint firstSpriteIndex, uint lastSpriteIndex)
m_graphicsDevice->RenderTriangles(startVertex, (lastVertex - startVertex) / 3); m_graphicsDevice->RenderTriangles(startVertex, (lastVertex - startVertex) / 3);
} }
void SpriteBatch::CheckForNewSpriteSpace() uint SpriteBatch::GetRemainingSpriteSpaces() const
{ {
// HACK: the assumption is made here that this will never expand the buffers uint currentMaxSprites = m_vertices->GetNumElements() / 6;
// by an amount that could be used to store more then one entity at a return currentMaxSprites - m_currentSpritePointer;
// time. This is because we use std::vector::push_back to expand the }
// entity object storage by only one.
uint verticesRequired = 6; void SpriteBatch::AddMoreSpriteSpace(uint numSprites)
if (m_vertices->GetRemainingSpace() < verticesRequired) {
{ uint numVerticesToAdd = numSprites * 6;
// need to add more space for a new entity of the specified type to fit uint newTextureArraySize = m_textures.size() + numSprites;
m_vertices->Extend(verticesRequired - m_vertices->GetRemainingSpace());
ASSERT(m_vertices->GetRemainingSpace() >= verticesRequired); m_vertices->Extend(numVerticesToAdd);
m_textures.resize(newTextureArraySize);
m_textures.push_back(NULL);
ASSERT(m_currentSpritePointer < m_textures.size());
}
} }
inline int SpriteBatch::FixYCoord(int y, uint sourceHeight) const inline int SpriteBatch::FixYCoord(int y, uint sourceHeight) const

3
src/framework/graphics/spritebatch.h
View file

@ -327,7 +327,8 @@ private:
void RenderQueue(); void RenderQueue();
void RenderQueueRange(uint firstSpriteIndex, uint lastSpriteIndex); void RenderQueueRange(uint firstSpriteIndex, uint lastSpriteIndex);
void CheckForNewSpriteSpace(); uint GetRemainingSpriteSpaces() const;
void AddMoreSpriteSpace(uint numSprites);
int FixYCoord(int y, uint sourceHeight) const; int FixYCoord(int y, uint sourceHeight) const;
float FixYCoord(int y, float sourceHeight) const; float FixYCoord(int y, float sourceHeight) const;