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Added control of perspective correction

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This allows for some optimization in render tests and
improves low-quality render times
This commit is contained in:
Michaël Lemaire 2015-11-10 00:34:19 +01:00
parent 159e0f7e81
commit f990ec4032
3 changed files with 33 additions and 13 deletions
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1
src/render/software/OverlayRasterizer.cpp
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@ -10,6 +10,7 @@ OverlayRasterizer::OverlayRasterizer(SoftwareRenderer *renderer, RenderProgress
}
int OverlayRasterizer::prepareRasterization() {
setPerspectiveCorrection(false);
return 1;
}

31
src/render/software/Rasterizer.cpp
View file

@ -37,6 +37,7 @@ Rasterizer::Rasterizer(SoftwareRenderer *renderer, RenderProgress *progress, int
interrupted = false;
backface_culling = false;
perspective_correction = true;
triangle_count = 0;
auto_cut_limit = 0.01;
@ -51,7 +52,8 @@ void Rasterizer::interrupt() {
interrupted = true;
}
void Rasterizer::setQuality(double) {
void Rasterizer::setQuality(double quality) {
this->perspective_correction = (quality > 0.4);
}
void Rasterizer::setColor(const Color &color) {
@ -62,6 +64,10 @@ void Rasterizer::setBackFaceCulling(bool cull) {
this->backface_culling = cull;
}
void Rasterizer::setPerspectiveCorrection(bool active) {
this->perspective_correction = active;
}
void Rasterizer::setAutoCutLimit(double limit) {
this->auto_cut_limit = limit;
}
@ -226,21 +232,32 @@ void Rasterizer::scanGetDiff(ScanPoint *v1, ScanPoint *v2, ScanPoint *result) {
void Rasterizer::scanInterpolate(CameraDefinition *camera, ScanPoint *v1, ScanPoint *diff, double value,
ScanPoint *result) {
result->pixel.x = v1->pixel.x + diff->pixel.x * value;
result->pixel.y = v1->pixel.y + diff->pixel.y * value;
result->pixel.z = v1->pixel.z + diff->pixel.z * value;
if (perspective_correction) {
Vector3 vec1(v1->pixel.x, v1->pixel.y, v1->pixel.z);
Vector3 vecdiff(diff->pixel.x, diff->pixel.y, diff->pixel.z);
double v1depth = 1.0 / camera->getRealDepth(vec1);
double v2depth = 1.0 / camera->getRealDepth(vec1.add(vecdiff));
double factor = 1.0 / ((1.0 - value) * v1depth + value * v2depth);
result->pixel.x = v1->pixel.x + diff->pixel.x * value;
result->pixel.y = v1->pixel.y + diff->pixel.y * value;
result->pixel.z = v1->pixel.z + diff->pixel.z * value;
result->location.x =
((1.0 - value) * (v1->location.x * v1depth) + value * (v1->location.x + diff->location.x) * v2depth) * factor;
((1.0 - value) * (v1->location.x * v1depth) + value * (v1->location.x + diff->location.x) * v2depth) *
factor;
result->location.y =
((1.0 - value) * (v1->location.y * v1depth) + value * (v1->location.y + diff->location.y) * v2depth) * factor;
((1.0 - value) * (v1->location.y * v1depth) + value * (v1->location.y + diff->location.y) * v2depth) *
factor;
result->location.z =
((1.0 - value) * (v1->location.z * v1depth) + value * (v1->location.z + diff->location.z) * v2depth) * factor;
((1.0 - value) * (v1->location.z * v1depth) + value * (v1->location.z + diff->location.z) * v2depth) *
factor;
} else {
result->location.x = v1->location.x + diff->location.x * value;
result->location.y = v1->location.y + diff->location.y * value;
result->location.z = v1->location.z + diff->location.z * value;
}
result->client = v1->client;
result->front_facing = v1->front_facing;
}

2
src/render/software/Rasterizer.h
View file

@ -61,6 +61,7 @@ class SOFTWARESHARED_EXPORT Rasterizer {
void setColor(const Color &color);
void setBackFaceCulling(bool cull);
void setPerspectiveCorrection(bool active);
/**
* Reset the internal triangle counter to 0.
@ -97,6 +98,7 @@ class SOFTWARESHARED_EXPORT Rasterizer {
int triangle_count;
double auto_cut_limit;
bool backface_culling;
bool perspective_correction;
};
}
}