本文整理汇总了C++中PixelShader::ProcessPixel方法的典型用法代码示例。如果您正苦于以下问题：C++ PixelShader::ProcessPixel方法的具体用法？C++ PixelShader::ProcessPixel怎么用？C++ PixelShader::ProcessPixel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PixelShader的用法示例。
在下文中一共展示了PixelShader::ProcessPixel方法的2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: _ScanTriangleLine
Void Raster::_ScanTriangleLine()
{
// Top-left filling-convention, left part
Int startX = MathFn->Ceil( m_ScanLine.fX[0] );
Int endX = MathFn->Ceil( m_ScanLine.fX[1] ) - 1;
if (endX < startX)
return;
// Offset & InvDelta along X
Scalar fOfsX = ( (Scalar)startX - m_ScanLine.fX[0] );
Scalar fInvDeltaX = ( m_ScanLine.fX[1] - m_ScanLine.fX[0] );
if (fInvDeltaX < SCALAR_ERROR)
fInvDeltaX = 1.0f;
else
fInvDeltaX = MathFn->Invert(fInvDeltaX);
// Slopes & Offsets
UInt j;
for(j = 0; j < m_pCFL->GetTotalSize(); ++j) {
m_ScanLine.pSlope[j] = ( m_ScanLine.pPixels[1][j] - m_ScanLine.pPixels[0][j] ) * fInvDeltaX;
m_ScanLine.pCurrent[j] = m_ScanLine.pPixels[0][j] + m_ScanLine.pSlope[j] * fOfsX;
}
// Rasterize
PixelShader * pPS = m_pRenderer->m_pPixelShader;
pPS->ProcessPixel( startX, m_ScanLine.iY, m_ScanLine.pCurrent );
for(j = 0; j < m_pCFL->GetTotalSize(); ++j)
m_ScanLine.pCurrent[j] += m_ScanLine.pSlope[j];
if ( !( m_pRenderer->_GetStateTransform()->UseWireframe() ) ) {
for(Int iX = startX + 1; iX < endX; ++iX) {
pPS->ProcessPixel( iX, m_ScanLine.iY, m_ScanLine.pCurrent );
for(j = 0; j < m_pCFL->GetTotalSize(); ++j)
m_ScanLine.pCurrent[j] += m_ScanLine.pSlope[j];
}
}
pPS->ProcessPixel( endX, m_ScanLine.iY, m_ScanLine.pCurrent );
}示例2: ScanSegment
Void Raster::ScanSegment( CCFLPtr pPixelA, CCFLPtr pPixelB )
{
// IMPORTANT : Fields of pixels A B and C are already scaled by InvW !
// See _VertexToPixel() in the Renderer class ...
const Scalar *pP0, *pP1;
const Vertex2 * pSwapPos;
const Vertex2 * pPos0 = (const Vertex2 *)( m_pCFL->GetField( pPixelA, CFLSEMANTIC_RASTERPOS, 0 ) );
const Vertex2 * pPos1 = (const Vertex2 *)( m_pCFL->GetField( pPixelB, CFLSEMANTIC_RASTERPOS, 0 ) );
// Sort pointers by crescent Y
Scalar fDY = (pPos1->Y - pPos0->Y);
if (fDY < 0.0f) {
fDY = -fDY;
pP0 = pPixelB;
pP1 = pPixelA;
pSwapPos = pPos0;
pPos0 = pPos1;
pPos1 = pSwapPos;
} else {
pP0 = pPixelA;
pP1 = pPixelB;
}
Scalar fDX = (pPos1->X - pPos0->X);
if (fDY >= fDX) {
if ( fDY < SCALAR_ERROR )
return; // degenerate segment
Scalar fInvDY = MathFn->Invert(fDY);
// Top-left filling-convention, top part
Int startY = MathFn->Ceil( pPos0->Y );
Int endY = MathFn->Ceil( pPos1->Y ) - 1;
if ( endY < startY )
return; // degenerate segment
Scalar fOfsY = ( (Scalar)startY - pPos0->Y );
// Slopes
Scalar fSlopeX = fDX * fInvDY;
Scalar fCurX = pPos0->X + fSlopeX * fOfsY;
UInt j;
for(j = 0; j < m_pCFL->GetTotalSize(); ++j) {
m_ScanLine.pSlope[j] = ( pP1[j] - pP0[j] ) * fInvDY;
m_ScanLine.pCurrent[j] = pP0[j] + m_ScanLine.pSlope[j] * fOfsY;
}
// Rasterize
PixelShader * pPS = m_pRenderer->m_pPixelShader;
for(Int iY = startY; iY <= endY; ++iY) {
// Top-left filling-convention, left part
UInt iX = (fSlopeX < 0.0f) ? MathFn->Ceil(fCurX) : MathFn->Floor(fCurX);
pPS->ProcessPixel( iX, iY, m_ScanLine.pCurrent );
fCurX += fSlopeX;
for(j = 0; j < m_pCFL->GetTotalSize(); ++j)
m_ScanLine.pCurrent[j] += m_ScanLine.pSlope[j];
}
} else {
if ( fDX < SCALAR_ERROR )
return; // degenerate segment
Scalar fInvDX = MathFn->Invert(fDX);
// Top-left filling-convention, left part
Int startX = MathFn->Ceil( pPos0->X );
Int endX = MathFn->Ceil( pPos1->X ) - 1;
if ( endX < startX )
return; // degenerate segment
Scalar fOfsX = ( (Scalar)startX - pPos0->X );
// Slopes
Scalar fSlopeY = fDY * fInvDX;
Scalar fCurY = pPos0->Y + fSlopeY * fOfsX;
UInt j;
for(j = 0; j < m_pCFL->GetTotalSize(); ++j) {
m_ScanLine.pSlope[j] = ( pP1[j] - pP0[j] ) * fInvDX;
m_ScanLine.pCurrent[j] = pP0[j] + m_ScanLine.pSlope[j] * fOfsX;
}
// Rasterize
PixelShader * pPS = m_pRenderer->m_pPixelShader;
for(Int iX = startX; iX <= endX; ++iX) {
// Top-left filling-convention, top part
UInt iY = (fSlopeY < 0.0f) ? MathFn->Ceil(fCurY) : MathFn->Floor(fCurY);
pPS->ProcessPixel( iX, iY, m_ScanLine.pCurrent );
fCurY += fSlopeY;
for(j = 0; j < m_pCFL->GetTotalSize(); ++j)
m_ScanLine.pCurrent[j] += m_ScanLine.pSlope[j];
}
}
}