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many graphics performance tweaks

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* use hardware vertex buffers (video memory)
* cache text drawing with vertex buffers instead of framebuffers
* avoid recalculating texture transformation matrix
This commit is contained in:
Eduardo Bart
2012-03-20 16:10:04 -03:00
parent b4261a8c7b
commit 5c35938a92
20 changed files with 180 additions and 155 deletions
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68
src/framework/graphics/coordsbuffer.cpp
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@@ -22,26 +22,21 @@
#include "coordsbuffer.h"
void CoordsBuffer::clear()
CoordsBuffer::CoordsBuffer()
{
m_destRects.reset();
m_srcRects.reset();
m_textureCoords.clear();
m_vertices.clear();
m_updateCache = true;
m_hardwareCacheMode = HardwareBuffer::DynamicDraw;
m_hardwareVertexBuffer = nullptr;
m_hardwareTextureVertexBuffer = nullptr;
m_hardwareCached = false;
m_hardwareCaching = false;
}
void CoordsBuffer::addRect(const Rect& dest)
CoordsBuffer::~CoordsBuffer()
{
m_destRects << dest;
m_updateCache = true;
}
void CoordsBuffer::addRect(const Rect& dest, const Rect& src)
{
m_destRects << dest;
m_srcRects << src;
m_updateCache = true;
if(m_hardwareVertexBuffer)
delete m_hardwareVertexBuffer;
if(m_hardwareTextureVertexBuffer)
delete m_hardwareTextureVertexBuffer;
}
void CoordsBuffer::addBoudingRect(const Rect& dest, int innerLineWidth)
@@ -58,7 +53,6 @@ void CoordsBuffer::addBoudingRect(const Rect& dest, int innerLineWidth)
addRect(Rect(right - w + 1, top, w, height - w)); // right
addRect(Rect(left + w, bottom - w + 1, width - w, w)); // bottom
addRect(Rect(left, top + w, w, height - w)); // left
m_updateCache = true;
}
void CoordsBuffer::addRepeatedRects(const Rect& dest, const Rect& src)
@@ -83,28 +77,38 @@ void CoordsBuffer::addRepeatedRects(const Rect& dest, const Rect& src)
}
partialDest.translate(dest.topLeft());
m_destRects << partialDest;
m_srcRects << partialSrc;
m_vertexBuffer.addRect(partialDest);
m_textureVertexBuffer.addRect(partialSrc);
}
}
m_updateCache = true;
m_hardwareCached = false;
}
void CoordsBuffer::cacheVertexArrays()
void CoordsBuffer::enableHardwareCaching(HardwareBuffer::UsagePattern usagePattern)
{
if(!m_updateCache)
m_hardwareCacheMode = usagePattern;
m_hardwareCaching = true;
m_hardwareCached = false;
}
void CoordsBuffer::updateCaches()
{
if(!m_hardwareCaching || m_hardwareCached)
return;
int numDestRects = m_destRects.size();
int numSrcRects = m_srcRects.size();
m_vertices.clear();
m_textureCoords.clear();
for(register int i=0;i<numDestRects;++i) {
m_vertices.addRect(m_destRects[i]);
if(numSrcRects == numDestRects)
m_textureCoords.addRect(m_srcRects[i]);
if(m_vertexBuffer.vertexCount() > 0) {
if(!m_hardwareVertexBuffer && m_vertexBuffer.vertexCount() > 0)
m_hardwareVertexBuffer = new HardwareBuffer(HardwareBuffer::VertexBuffer);
m_hardwareVertexBuffer->bind();
m_hardwareVertexBuffer->write((void*)m_vertexBuffer.vertices(), m_vertexBuffer.size() * sizeof(float), m_hardwareCacheMode);
}
m_updateCache = false;
if(m_textureVertexBuffer.vertexCount() > 0) {
if(!m_hardwareTextureVertexBuffer && m_textureVertexBuffer.vertexCount() > 0)
m_hardwareTextureVertexBuffer = new HardwareBuffer(HardwareBuffer::VertexBuffer);
m_hardwareTextureVertexBuffer->bind();
m_hardwareTextureVertexBuffer->write((void*)m_textureVertexBuffer.vertices(), m_textureVertexBuffer.size() * sizeof(float), m_hardwareCacheMode);
}
m_hardwareCached = true;
}