From 9f0bfed73f914bad04d2f935206ff38e54377b53 Mon Sep 17 00:00:00 2001
From: Enigmatisms <984041003@qq.com>
Date: Sat, 29 Jun 2024 11:03:16 +0800
Subject: [PATCH] Volume rendering no MIS completed.
---
bxdf/volume.py | 24 +++++++---------
scenes/cbox/cbox-rgbvol.xml | 55 +++++++++++++++++++++++++------------
2 files changed, 47 insertions(+), 32 deletions(-)
diff --git a/bxdf/volume.py b/bxdf/volume.py
index de7e337..e637cfa 100644
--- a/bxdf/volume.py
+++ b/bxdf/volume.py
@@ -141,24 +141,20 @@ def make_colorful_volume(density_grid: np.ndarray, xres: int, yres: int, zres: i
density_grid
], axis = -1)
- # 创建一个从0到1的渐变数组，表示x轴从左到右
half_x = zres // 3
- grad_l = np.linspace(1, 0, half_x, dtype = np.float32) ** 0.25
- grad_r = np.linspace(0, 1, zres - half_x, dtype = np.float32) ** 0.1
+ grad_l = np.linspace(1, 0, half_x, dtype = np.float32) ** 0.65
+ grad_r = np.linspace(0, 1, zres - half_x, dtype = np.float32) ** 0.6
- # 前半部分，从红色（1, 0, 0）到白色（1, 1, 1）
left_half = np.zeros((half_x, 3), dtype = np.float32)
- left_half[:, 0] = 1 # 红色通道保持1
- left_half[:, 1] = 1 - grad_l # 绿色通道从0到1
- left_half[:, 2] = 1 - grad_l # 蓝色通道从0到1
+ left_half[:, 0] = 1 - grad_l
+ left_half[:, 1] = 1
+ left_half[:, 2] = 1
- # 后半部分，从白色（1, 1, 1）到蓝色（0, 0, 1）
right_half = np.zeros((zres - half_x, 3), dtype = np.float32)
- right_half[:, 0] = 1 - grad_r # 红色通道从1到0
- right_half[:, 1] = 1 - grad_r # 绿色通道从1到0
- right_half[:, 2] = 1 # 蓝色通道保持1
+ right_half[:, 0] = 1
+ right_half[:, 1] = 1
+ right_half[:, 2] = 1 - grad_r
- # 将两个部分组合在一起
color_gradient = np.vstack((left_half, right_half))
return density_grid * color_gradient[:, None, None, :]
@@ -383,7 +379,7 @@ def sample_distance_delta_tracking_3d(self,
t = near_far[0] - ti.log(1.0 - ti.random(float)) * inv_maj
while t < near_far[1]:
- d = self.density_lookup_lerp_3d(grid, ray_ol + t * ray_dl, vec3([
+ d = self.density_lookup_3d(grid, ray_ol + t * ray_dl, vec3([
ti.random(float), ti.random(float), ti.random(float)
]))
# Scatter upon real collision
@@ -442,7 +438,7 @@ def eval_tr_ratio_tracking_3d(self,
if t >= near_far[1]: break
# for mono-chromatic medium, this is 1
- d = self.density_lookup_lerp_3d(grid, ray_ol + t * ray_dl, vec3([
+ d = self.density_lookup_3d(grid, ray_ol + t * ray_dl, vec3([
ti.random(float), ti.random(float), ti.random(float)
]))
diff --git a/scenes/cbox/cbox-rgbvol.xml b/scenes/cbox/cbox-rgbvol.xml
index 8791cc8..3f09345 100644
--- a/scenes/cbox/cbox-rgbvol.xml
+++ b/scenes/cbox/cbox-rgbvol.xml
@@ -9,7 +9,7 @@
-
+
@@ -18,8 +18,8 @@
-
-
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+
@@ -50,13 +50,13 @@
-
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-
+
@@ -67,18 +67,37 @@
-
-
-
+
+
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+
+
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+
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-
+