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Optimized texture rendering

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Compute shadows only once and don't iterate on fully covered
layers (this was supposed to be already done but was flawed)
This commit is contained in:
Michaël Lemaire 2016-01-22 01:09:34 +01:00
parent e6fc00a8ad
commit 09697e0d5e
1 changed files with 18 additions and 7 deletions
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25
src/render/software/TexturesRenderer.cpp
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@ -8,6 +8,7 @@
#include "TexturesDefinition.h"
#include "Zone.h"
#include "LightingManager.h"
#include "LightStatus.h"
#include "NoiseNode.h"
#include "FractalNoise.h"
#include "NoiseGenerator.h"
@ -154,28 +155,38 @@ vector<Vector3> TexturesRenderer::getLayersDisplacement(const TexturesDefinition
Color TexturesRenderer::getFinalComposition(const TexturesDefinition *textures, LightingManager *lighting,
const vector<double> &presence, const vector<Vector3> &location,
const vector<Vector3> &normal, double precision, const Vector3 &eye) const {
int n = textures->getLayerCount();
unsigned int n = textures->getLayerCount();
assert(presence.size() == to_size(n));
assert(location.size() == to_size(n));
assert(normal.size() == to_size(n));
Color result = COLOR_BLACK;
// TODO share the same lighting status (no need to recompute shadows)
int i;
// Start at the top-most covering layer (layers underneath are only important for displacement, not color)
unsigned int i;
unsigned int ipos = 0;
for (i = n - 1; i > 0; i--) {
// Start at the top-most covering layer (layers underneath are only important for displacement, not color)
if (presence[i] > 0.99999) {
if (presence[i] > 0.1 and ipos == 0) {
ipos = i;
} else if (presence[i] > 0.99999) {
break;
}
}
for (i = 0; i < n; i++) {
// Prepare the lighing status
LightStatus status(lighting, location[ipos], eye);
lighting->fillStatus(status, location[ipos]);
// Iterate on each layer
while (i < n) {
double layer_presence = presence[i];
if (layer_presence > 0.0) {
TextureLayerDefinition *layer = textures->getTextureLayer(i);
auto detail_normal = _getDetailNormal(location[i], normal[i], layer, precision, quality_normal5);
Color layer_color = lighting->apply(eye, location[i], detail_normal, *layer->material);
Color layer_color = status.apply(detail_normal, *layer->material);
layer_color.a *= layer_presence;
result.mask(layer_color);
}
i++;
}
return result;
}