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more graphics optimizations

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* avoid buffers clears
* use scisors testing instead of stencil testing for clipping
* remove stencil buffers
This commit is contained in:
Eduardo Bart
2012-04-04 17:18:24 -03:00
parent 53d56259c7
commit b5a4d31fa7
9 changed files with 35 additions and 45 deletions
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23
src/framework/graphics/framebuffer.cpp
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@@ -30,13 +30,11 @@ std::vector<bool> auxBuffers;
FrameBuffer::FrameBuffer()
{
m_clearColor = Color::alpha;
internalCreate();
}
FrameBuffer::FrameBuffer(const Size& size)
{
m_clearColor = Color::alpha;
internalCreate();
resize(size);
}
@@ -101,10 +99,22 @@ void FrameBuffer::resize(const Size& size)
logFatal("Unable to setup framebuffer object");
internalRelease();
}
}
void FrameBuffer::bind(bool clear)
void FrameBuffer::clear(const Color& color, const Rect& rect)
{
bool clip = rect.isValid();
if(clip)
g_graphics.beginClipping(Rect(0, 0, m_texture->getSize()));
glClearColor(color.rF(), color.gF(), color.bF(), color.aF());
glClear(GL_COLOR_BUFFER_BIT);
if(clip)
g_graphics.endClipping();
}
void FrameBuffer::bind()
{
internalBind();
Matrix3 projectionMatrix = { 2.0f/m_texture->getWidth(), 0.0f, 0.0f,
@@ -115,11 +125,6 @@ void FrameBuffer::bind(bool clear)
m_oldViewportSize = g_graphics.getViewportSize();
g_painter.setProjectionMatrix(projectionMatrix);
g_graphics.setViewportSize(m_texture->getSize());
if(clear) {
glClearColor(m_clearColor.rF(), m_clearColor.gF(), m_clearColor.bF(), m_clearColor.aF());
glClear(GL_COLOR_BUFFER_BIT);
}
}
void FrameBuffer::release()