mirror of
https://github.com/godotengine/godot.git
synced 2025-10-31 05:31:01 +00:00
4c3f7d1290
Adds multi-channel SDF font texture generation and rendering support. Adds per-font oversampling support. Adds FontData import plugins (for dynamic fonts, BMFonts and monospaced image fonts), font texture cache pre-generation and loading. Adds BMFont binary format and outline support.
288 lines
13 KiB
C++
288 lines
13 KiB
C++
|
|
#include "../msdfgen.h"
|
|
|
|
#include <vector>
|
|
#include "edge-selectors.h"
|
|
#include "contour-combiners.h"
|
|
#include "ShapeDistanceFinder.h"
|
|
|
|
namespace msdfgen {
|
|
|
|
template <typename DistanceType>
|
|
class DistancePixelConversion;
|
|
|
|
template <>
|
|
class DistancePixelConversion<double> {
|
|
double invRange;
|
|
public:
|
|
typedef BitmapRef<float, 1> BitmapRefType;
|
|
inline explicit DistancePixelConversion(double range) : invRange(1/range) { }
|
|
inline void operator()(float *pixels, double distance) const {
|
|
*pixels = float(invRange*distance+.5);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
class DistancePixelConversion<MultiDistance> {
|
|
double invRange;
|
|
public:
|
|
typedef BitmapRef<float, 3> BitmapRefType;
|
|
inline explicit DistancePixelConversion(double range) : invRange(1/range) { }
|
|
inline void operator()(float *pixels, const MultiDistance &distance) const {
|
|
pixels[0] = float(invRange*distance.r+.5);
|
|
pixels[1] = float(invRange*distance.g+.5);
|
|
pixels[2] = float(invRange*distance.b+.5);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
class DistancePixelConversion<MultiAndTrueDistance> {
|
|
double invRange;
|
|
public:
|
|
typedef BitmapRef<float, 4> BitmapRefType;
|
|
inline explicit DistancePixelConversion(double range) : invRange(1/range) { }
|
|
inline void operator()(float *pixels, const MultiAndTrueDistance &distance) const {
|
|
pixels[0] = float(invRange*distance.r+.5);
|
|
pixels[1] = float(invRange*distance.g+.5);
|
|
pixels[2] = float(invRange*distance.b+.5);
|
|
pixels[3] = float(invRange*distance.a+.5);
|
|
}
|
|
};
|
|
|
|
template <class ContourCombiner>
|
|
void generateDistanceField(const typename DistancePixelConversion<typename ContourCombiner::DistanceType>::BitmapRefType &output, const Shape &shape, const Projection &projection, double range) {
|
|
DistancePixelConversion<typename ContourCombiner::DistanceType> distancePixelConversion(range);
|
|
#ifdef MSDFGEN_USE_OPENMP
|
|
#pragma omp parallel
|
|
#endif
|
|
{
|
|
ShapeDistanceFinder<ContourCombiner> distanceFinder(shape);
|
|
bool rightToLeft = false;
|
|
#ifdef MSDFGEN_USE_OPENMP
|
|
#pragma omp for
|
|
#endif
|
|
for (int y = 0; y < output.height; ++y) {
|
|
int row = shape.inverseYAxis ? output.height-y-1 : y;
|
|
for (int col = 0; col < output.width; ++col) {
|
|
int x = rightToLeft ? output.width-col-1 : col;
|
|
Point2 p = projection.unproject(Point2(x+.5, y+.5));
|
|
typename ContourCombiner::DistanceType distance = distanceFinder.distance(p);
|
|
distancePixelConversion(output(x, row), distance);
|
|
}
|
|
rightToLeft = !rightToLeft;
|
|
}
|
|
}
|
|
}
|
|
|
|
void generateSDF(const BitmapRef<float, 1> &output, const Shape &shape, const Projection &projection, double range, const GeneratorConfig &config) {
|
|
if (config.overlapSupport)
|
|
generateDistanceField<OverlappingContourCombiner<TrueDistanceSelector> >(output, shape, projection, range);
|
|
else
|
|
generateDistanceField<SimpleContourCombiner<TrueDistanceSelector> >(output, shape, projection, range);
|
|
}
|
|
|
|
void generatePseudoSDF(const BitmapRef<float, 1> &output, const Shape &shape, const Projection &projection, double range, const GeneratorConfig &config) {
|
|
if (config.overlapSupport)
|
|
generateDistanceField<OverlappingContourCombiner<PseudoDistanceSelector> >(output, shape, projection, range);
|
|
else
|
|
generateDistanceField<SimpleContourCombiner<PseudoDistanceSelector> >(output, shape, projection, range);
|
|
}
|
|
|
|
void generateMSDF(const BitmapRef<float, 3> &output, const Shape &shape, const Projection &projection, double range, const MSDFGeneratorConfig &config) {
|
|
if (config.overlapSupport)
|
|
generateDistanceField<OverlappingContourCombiner<MultiDistanceSelector> >(output, shape, projection, range);
|
|
else
|
|
generateDistanceField<SimpleContourCombiner<MultiDistanceSelector> >(output, shape, projection, range);
|
|
msdfErrorCorrection(output, shape, projection, range, config);
|
|
}
|
|
|
|
void generateMTSDF(const BitmapRef<float, 4> &output, const Shape &shape, const Projection &projection, double range, const MSDFGeneratorConfig &config) {
|
|
if (config.overlapSupport)
|
|
generateDistanceField<OverlappingContourCombiner<MultiAndTrueDistanceSelector> >(output, shape, projection, range);
|
|
else
|
|
generateDistanceField<SimpleContourCombiner<MultiAndTrueDistanceSelector> >(output, shape, projection, range);
|
|
msdfErrorCorrection(output, shape, projection, range, config);
|
|
}
|
|
|
|
// Legacy API
|
|
|
|
void generateSDF(const BitmapRef<float, 1> &output, const Shape &shape, double range, const Vector2 &scale, const Vector2 &translate, bool overlapSupport) {
|
|
generateSDF(output, shape, Projection(scale, translate), range, GeneratorConfig(overlapSupport));
|
|
}
|
|
|
|
void generatePseudoSDF(const BitmapRef<float, 1> &output, const Shape &shape, double range, const Vector2 &scale, const Vector2 &translate, bool overlapSupport) {
|
|
generatePseudoSDF(output, shape, Projection(scale, translate), range, GeneratorConfig(overlapSupport));
|
|
}
|
|
|
|
void generateMSDF(const BitmapRef<float, 3> &output, const Shape &shape, double range, const Vector2 &scale, const Vector2 &translate, const ErrorCorrectionConfig &errorCorrectionConfig, bool overlapSupport) {
|
|
generateMSDF(output, shape, Projection(scale, translate), range, MSDFGeneratorConfig(overlapSupport, errorCorrectionConfig));
|
|
}
|
|
|
|
void generateMTSDF(const BitmapRef<float, 4> &output, const Shape &shape, double range, const Vector2 &scale, const Vector2 &translate, const ErrorCorrectionConfig &errorCorrectionConfig, bool overlapSupport) {
|
|
generateMTSDF(output, shape, Projection(scale, translate), range, MSDFGeneratorConfig(overlapSupport, errorCorrectionConfig));
|
|
}
|
|
|
|
// Legacy version
|
|
|
|
void generateSDF_legacy(const BitmapRef<float, 1> &output, const Shape &shape, double range, const Vector2 &scale, const Vector2 &translate) {
|
|
#ifdef MSDFGEN_USE_OPENMP
|
|
#pragma omp parallel for
|
|
#endif
|
|
for (int y = 0; y < output.height; ++y) {
|
|
int row = shape.inverseYAxis ? output.height-y-1 : y;
|
|
for (int x = 0; x < output.width; ++x) {
|
|
double dummy;
|
|
Point2 p = Vector2(x+.5, y+.5)/scale-translate;
|
|
SignedDistance minDistance;
|
|
for (std::vector<Contour>::const_iterator contour = shape.contours.begin(); contour != shape.contours.end(); ++contour)
|
|
for (std::vector<EdgeHolder>::const_iterator edge = contour->edges.begin(); edge != contour->edges.end(); ++edge) {
|
|
SignedDistance distance = (*edge)->signedDistance(p, dummy);
|
|
if (distance < minDistance)
|
|
minDistance = distance;
|
|
}
|
|
*output(x, row) = float(minDistance.distance/range+.5);
|
|
}
|
|
}
|
|
}
|
|
|
|
void generatePseudoSDF_legacy(const BitmapRef<float, 1> &output, const Shape &shape, double range, const Vector2 &scale, const Vector2 &translate) {
|
|
#ifdef MSDFGEN_USE_OPENMP
|
|
#pragma omp parallel for
|
|
#endif
|
|
for (int y = 0; y < output.height; ++y) {
|
|
int row = shape.inverseYAxis ? output.height-y-1 : y;
|
|
for (int x = 0; x < output.width; ++x) {
|
|
Point2 p = Vector2(x+.5, y+.5)/scale-translate;
|
|
SignedDistance minDistance;
|
|
const EdgeHolder *nearEdge = NULL;
|
|
double nearParam = 0;
|
|
for (std::vector<Contour>::const_iterator contour = shape.contours.begin(); contour != shape.contours.end(); ++contour)
|
|
for (std::vector<EdgeHolder>::const_iterator edge = contour->edges.begin(); edge != contour->edges.end(); ++edge) {
|
|
double param;
|
|
SignedDistance distance = (*edge)->signedDistance(p, param);
|
|
if (distance < minDistance) {
|
|
minDistance = distance;
|
|
nearEdge = &*edge;
|
|
nearParam = param;
|
|
}
|
|
}
|
|
if (nearEdge)
|
|
(*nearEdge)->distanceToPseudoDistance(minDistance, p, nearParam);
|
|
*output(x, row) = float(minDistance.distance/range+.5);
|
|
}
|
|
}
|
|
}
|
|
|
|
void generateMSDF_legacy(const BitmapRef<float, 3> &output, const Shape &shape, double range, const Vector2 &scale, const Vector2 &translate, ErrorCorrectionConfig errorCorrectionConfig) {
|
|
#ifdef MSDFGEN_USE_OPENMP
|
|
#pragma omp parallel for
|
|
#endif
|
|
for (int y = 0; y < output.height; ++y) {
|
|
int row = shape.inverseYAxis ? output.height-y-1 : y;
|
|
for (int x = 0; x < output.width; ++x) {
|
|
Point2 p = Vector2(x+.5, y+.5)/scale-translate;
|
|
|
|
struct {
|
|
SignedDistance minDistance;
|
|
const EdgeHolder *nearEdge;
|
|
double nearParam;
|
|
} r, g, b;
|
|
r.nearEdge = g.nearEdge = b.nearEdge = NULL;
|
|
r.nearParam = g.nearParam = b.nearParam = 0;
|
|
|
|
for (std::vector<Contour>::const_iterator contour = shape.contours.begin(); contour != shape.contours.end(); ++contour)
|
|
for (std::vector<EdgeHolder>::const_iterator edge = contour->edges.begin(); edge != contour->edges.end(); ++edge) {
|
|
double param;
|
|
SignedDistance distance = (*edge)->signedDistance(p, param);
|
|
if ((*edge)->color&RED && distance < r.minDistance) {
|
|
r.minDistance = distance;
|
|
r.nearEdge = &*edge;
|
|
r.nearParam = param;
|
|
}
|
|
if ((*edge)->color&GREEN && distance < g.minDistance) {
|
|
g.minDistance = distance;
|
|
g.nearEdge = &*edge;
|
|
g.nearParam = param;
|
|
}
|
|
if ((*edge)->color&BLUE && distance < b.minDistance) {
|
|
b.minDistance = distance;
|
|
b.nearEdge = &*edge;
|
|
b.nearParam = param;
|
|
}
|
|
}
|
|
|
|
if (r.nearEdge)
|
|
(*r.nearEdge)->distanceToPseudoDistance(r.minDistance, p, r.nearParam);
|
|
if (g.nearEdge)
|
|
(*g.nearEdge)->distanceToPseudoDistance(g.minDistance, p, g.nearParam);
|
|
if (b.nearEdge)
|
|
(*b.nearEdge)->distanceToPseudoDistance(b.minDistance, p, b.nearParam);
|
|
output(x, row)[0] = float(r.minDistance.distance/range+.5);
|
|
output(x, row)[1] = float(g.minDistance.distance/range+.5);
|
|
output(x, row)[2] = float(b.minDistance.distance/range+.5);
|
|
}
|
|
}
|
|
|
|
errorCorrectionConfig.distanceCheckMode = ErrorCorrectionConfig::DO_NOT_CHECK_DISTANCE;
|
|
msdfErrorCorrection(output, shape, Projection(scale, translate), range, MSDFGeneratorConfig(false, errorCorrectionConfig));
|
|
}
|
|
|
|
void generateMTSDF_legacy(const BitmapRef<float, 4> &output, const Shape &shape, double range, const Vector2 &scale, const Vector2 &translate, ErrorCorrectionConfig errorCorrectionConfig) {
|
|
#ifdef MSDFGEN_USE_OPENMP
|
|
#pragma omp parallel for
|
|
#endif
|
|
for (int y = 0; y < output.height; ++y) {
|
|
int row = shape.inverseYAxis ? output.height-y-1 : y;
|
|
for (int x = 0; x < output.width; ++x) {
|
|
Point2 p = Vector2(x+.5, y+.5)/scale-translate;
|
|
|
|
SignedDistance minDistance;
|
|
struct {
|
|
SignedDistance minDistance;
|
|
const EdgeHolder *nearEdge;
|
|
double nearParam;
|
|
} r, g, b;
|
|
r.nearEdge = g.nearEdge = b.nearEdge = NULL;
|
|
r.nearParam = g.nearParam = b.nearParam = 0;
|
|
|
|
for (std::vector<Contour>::const_iterator contour = shape.contours.begin(); contour != shape.contours.end(); ++contour)
|
|
for (std::vector<EdgeHolder>::const_iterator edge = contour->edges.begin(); edge != contour->edges.end(); ++edge) {
|
|
double param;
|
|
SignedDistance distance = (*edge)->signedDistance(p, param);
|
|
if (distance < minDistance)
|
|
minDistance = distance;
|
|
if ((*edge)->color&RED && distance < r.minDistance) {
|
|
r.minDistance = distance;
|
|
r.nearEdge = &*edge;
|
|
r.nearParam = param;
|
|
}
|
|
if ((*edge)->color&GREEN && distance < g.minDistance) {
|
|
g.minDistance = distance;
|
|
g.nearEdge = &*edge;
|
|
g.nearParam = param;
|
|
}
|
|
if ((*edge)->color&BLUE && distance < b.minDistance) {
|
|
b.minDistance = distance;
|
|
b.nearEdge = &*edge;
|
|
b.nearParam = param;
|
|
}
|
|
}
|
|
|
|
if (r.nearEdge)
|
|
(*r.nearEdge)->distanceToPseudoDistance(r.minDistance, p, r.nearParam);
|
|
if (g.nearEdge)
|
|
(*g.nearEdge)->distanceToPseudoDistance(g.minDistance, p, g.nearParam);
|
|
if (b.nearEdge)
|
|
(*b.nearEdge)->distanceToPseudoDistance(b.minDistance, p, b.nearParam);
|
|
output(x, row)[0] = float(r.minDistance.distance/range+.5);
|
|
output(x, row)[1] = float(g.minDistance.distance/range+.5);
|
|
output(x, row)[2] = float(b.minDistance.distance/range+.5);
|
|
output(x, row)[3] = float(minDistance.distance/range+.5);
|
|
}
|
|
}
|
|
|
|
errorCorrectionConfig.distanceCheckMode = ErrorCorrectionConfig::DO_NOT_CHECK_DISTANCE;
|
|
msdfErrorCorrection(output, shape, Projection(scale, translate), range, MSDFGeneratorConfig(false, errorCorrectionConfig));
|
|
}
|
|
|
|
}
|