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Sampling - free gourad triangle mesh

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This commit is contained in:
Jakub Melka
2021-03-13 15:05:15 +01:00
parent 15b610482c
commit 47bb1c3216
3 changed files with 246 additions and 34 deletions
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16
Pdf4QtLib/sources/pdftransparencyrenderer.cpp
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@ -53,12 +53,18 @@ PDFFloatBitmap::PDFFloatBitmap(size_t width, size_t height, PDFPixelFormat forma
PDFColorBuffer PDFFloatBitmap::getPixel(size_t x, size_t y)
{
Q_ASSERT(x < m_width);
Q_ASSERT(y < m_height);
const size_t index = getPixelIndex(x, y);
return PDFColorBuffer(m_data.data() + index, m_pixelSize);
}
PDFConstColorBuffer PDFFloatBitmap::getPixel(size_t x, size_t y) const
{
Q_ASSERT(x < m_width);
Q_ASSERT(y < m_height);
const size_t index = getPixelIndex(x, y);
return PDFConstColorBuffer(m_data.data() + index, m_pixelSize);
}
@ -1912,7 +1918,10 @@ bool PDFTransparencyRenderer::performPathPaintingUsingShading(const QPainterPath
{
for (int y = fillRect.top(); y <= fillRect.bottom(); ++y)
{
PDFColorBuffer buffer = texture.getPixel(x, y);
const int texelCoordinateX = x - fillRect.left();
const int texelCoordinateY = y - fillRect.top();
PDFColorBuffer buffer = texture.getPixel(texelCoordinateX, texelCoordinateY);
bool isSampled = sampler->sample(QPointF(x, y) + offset, buffer.resized(shadingColorComponentCount), m_settings.shadingAlgorithmLimit);
const PDFColorComponent textureSampleShape = isSampled ? 1.0f : 0.0f;
buffer[textureShapeChannel] = textureSampleShape;
@ -1929,7 +1938,10 @@ bool PDFTransparencyRenderer::performPathPaintingUsingShading(const QPainterPath
{
for (int x = fillRect.left(); x <= fillRect.right(); ++x)
{
PDFColorBuffer buffer = texture.getPixel(x, y);
const int texelCoordinateX = x - fillRect.left();
const int texelCoordinateY = y - fillRect.top();
PDFColorBuffer buffer = texture.getPixel(texelCoordinateX, texelCoordinateY);
bool isSampled = sampler->sample(QPointF(x, y) + offset, buffer.resized(shadingColorComponentCount), m_settings.shadingAlgorithmLimit);
const PDFColorComponent textureSampleShape = isSampled ? 1.0f : 0.0f;
buffer[textureShapeChannel] = textureSampleShape;