public void accelerateShadows() {
if (withAcceleration) {
accLightProjectionZBuf = new float[lightCount][][];
for (int i = 0; i < lightCount; i++) {
if (shadowZBuf[i] != null) {
accLightProjectionZBuf[i] = new float[rasterWidth][rasterHeight];
for (int pX = 0; pX < rasterWidth; pX++) {
for (int pY = 0; pY < rasterHeight; pY++) {
accLightProjectionZBuf[i][pX][pY] = NormalsCalculator.ZBUF_ZMIN;
float originX = originXBuf[pX][pY];
if (originX != NormalsCalculator.ZBUF_ZMIN) {
float originY = originYBuf[pX][pY];
if (originY != NormalsCalculator.ZBUF_ZMIN) {
float originZ = originZBuf[pX][pY];
if (originZ != NormalsCalculator.ZBUF_ZMIN) {
int x =
projectPointToLightMapX(
i,
lightViewCalculator.applyLightProjectionX(
i, originX, originY, originZ));
int y =
projectPointToLightMapY(
i,
lightViewCalculator.applyLightProjectionY(
i, originX, originY, originZ));
if (x >= 0
&& x < shadowZBuf[i].length
&& y >= 0
&& y < shadowZBuf[i][0].length) {
double lightZ =
lightViewCalculator.applyLightProjectionZ(i, originX, originY, originZ);
accLightProjectionZBuf[i][pX][pY] =
(float) GfxMathLib.step(shadowZBuf[i][x][y] - shadowDistBias, lightZ);
}
}
}
}
}
}
}
}
}
}
private void calcSmoothShadowIntensity(
int pX,
int pY,
RasterPoint pDestRasterPoint,
int i,
int shadowSmoothRadius,
double[][] shadowSmoothKernel) {
pDestRasterPoint.visibility[i] = 1.0;
double totalIntensity = 0.0;
if (accLightProjectionZBuf != null && accLightProjectionZBuf[i] != null) {
int dl = shadowSmoothRadius / 8 + 1;
for (int k = -shadowSmoothRadius; k <= shadowSmoothRadius; k += dl) {
int dstX = pX + k;
if (dstX >= 0 && dstX < originXBuf.length) {
for (int l = -shadowSmoothRadius; l <= shadowSmoothRadius; l += dl) {
int dstY = pY + l;
if (dstY >= 0 && dstY < originXBuf[0].length) {
if (accLightProjectionZBuf[i][dstX][dstY] > NormalsCalculator.ZBUF_ZMIN) {
double intensity =
shadowSmoothKernel[k + shadowSmoothRadius][l + shadowSmoothRadius];
totalIntensity += intensity;
pDestRasterPoint.visibility[i] += accLightProjectionZBuf[i][dstX][dstY] * intensity;
}
}
}
}
}
} else {
for (int k = -shadowSmoothRadius; k <= shadowSmoothRadius; k++) {
int dstX = pX + k;
if (dstX >= 0 && dstX < originXBuf.length) {
for (int l = -shadowSmoothRadius; l <= shadowSmoothRadius; l++) {
int dstY = pY + l;
if (dstY >= 0 && dstY < originXBuf[0].length) {
float originX = originXBuf[dstX][dstY];
if (originX != NormalsCalculator.ZBUF_ZMIN) {
float originY = originYBuf[dstX][dstY];
if (originY != NormalsCalculator.ZBUF_ZMIN) {
float originZ = originZBuf[dstX][dstY];
if (originZ != NormalsCalculator.ZBUF_ZMIN) {
int x =
projectPointToLightMapX(
i,
lightViewCalculator.applyLightProjectionX(
i, originX, originY, originZ));
int y =
projectPointToLightMapY(
i,
lightViewCalculator.applyLightProjectionY(
i, originX, originY, originZ));
if (x >= 0
&& x < shadowZBuf[i].length
&& y >= 0
&& y < shadowZBuf[i][0].length) {
double intensity =
shadowSmoothKernel[k + shadowSmoothRadius][l + shadowSmoothRadius];
totalIntensity += intensity;
double lightZ =
lightViewCalculator.applyLightProjectionZ(i, originX, originY, originZ);
pDestRasterPoint.visibility[i] +=
GfxMathLib.step(shadowZBuf[i][x][y] - shadowDistBias, lightZ) * intensity;
}
}
}
}
}
}
}
}
}
if (totalIntensity > MathLib.EPSILON) {
pDestRasterPoint.visibility[i] /= totalIntensity;
}
}
