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Differential D14604 Diff 50369 intern/cycles/kernel/osl/shaders/node_environment_texture.osl

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intern/cycles/kernel/osl/shaders/node_environment_texture.osl

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return vector(u, v, 0.0); return vector(u, v, 0.0);
} }
void environment_texture_cubemap_xyz_to_uv(
vector dir, output float u, output float v, output float max_axis, output int index)
{
float abs_x = abs(dir.x);
float abs_y = abs(dir.y);
float abs_z = abs(dir.z);
int is_x_positive = dir.x > 0.0 ? 1 : 0;
int is_y_positive = dir.y > 0.0 ? 1 : 0;
int is_z_positive = dir.z > 0.0 ? 1 : 0;
if (is_x_positive && abs_x >= abs_y && abs_x >= abs_z) {
max_axis = abs_x;
u = dir.y;
v = dir.z;
index = 0;
}
if (!is_x_positive && abs_x >= abs_y && abs_x >= abs_z) {
max_axis = abs_x;
u = -dir.y;
v = dir.z;
index = 1;
}
if (is_y_positive && abs_y >= abs_x && abs_y >= abs_z) {
max_axis = abs_y;
u = -dir.x;
v = dir.z;
index = 2;
}
if (!is_y_positive && abs_y >= abs_x && abs_y >= abs_z) {
max_axis = abs_y;
u = dir.x;
v = dir.z;
index = 3;
}
if (is_z_positive && abs_z >= abs_x && abs_z >= abs_y) {
max_axis = abs_z;
u = dir.x;
v = dir.y;
index = 4;
}
if (!is_z_positive && abs_z >= abs_x && abs_z >= abs_y) {
max_axis = abs_z;
u = dir.x;
v = dir.y;
index = 5;
}
}
vector environment_texture_cubemap_cross_horizontal(float uc, float vc, float max_axis, int index)
{
float u = 0.125 * (uc / max_axis + 1.0);
float v = 0.166667 * (vc / max_axis + 1.0);
if (index == 0) {
u += 0.5;
v += 0.333333;
}
else if (index == 1) {
v += 0.333333;
}
else if (index == 2) {
u += 0.75;
v += 0.333333;
}
else if (index == 3) {
u += 0.25;
v += 0.333333;
}
else if (index == 4) {
u += 0.25;
v += 0.666666;
}
else if (index == 5) {
u += 0.25;
v = 0.333333 - v;
}
return vector(u, v, 0.0);
}
vector environment_texture_cubemap_stripe_horizontal(float uc, float vc, float max_axis, int index)
{
float u = 0.083333 * (uc / max_axis + 1.0);
float v = 0.5 * (vc / max_axis + 1.0);
if (index == 1)
u += 0.166666;
else if (index == 2)
u += 0.166666 * 5;
else if (index == 3)
u += 0.166666 * 4;
else if (index == 4)
u += 0.166666 * 2;
else if (index == 5) {
u += 0.166666 * 3;
v = 1.0 - v;
}
return vector(u, v, 0.0);
}
vector environment_texture_cubemap_stripe_vertical(float uc, float vc, float max_axis, int index)
{
float u = 0.5 * (uc / max_axis + 1.0);
float v = 0.083333 * (vc / max_axis + 1.0);
if (index == 0)
v += 0.166666 * 5;
else if (index == 1)
v += 0.166666 * 4;
else if (index == 3)
v += 0.166666;
else if (index == 4)
v += 0.166666 * 3;
else if (index == 5)
v = 0.166666 * 3 - v;
return vector(u, v, 0.0);
}
vector environment_texture_direction_to_cubemap(vector dir, string cubemap_layout)
{
float max_axis = 0.0;
float uc = 0.0;
float vc = 0.0;
int index = -1;
environment_texture_cubemap_xyz_to_uv(dir, uc, vc, max_axis, index);
if (cubemap_layout == "cross_horizontal")
return environment_texture_cubemap_cross_horizontal(uc, vc, max_axis, index);
else if (cubemap_layout == "stripe_horizontal")
return environment_texture_cubemap_stripe_horizontal(uc, vc, max_axis, index);
else
return environment_texture_cubemap_stripe_vertical(uc, vc, max_axis, index);
}
shader node_environment_texture( shader node_environment_texture(
int use_mapping = 0, int use_mapping = 0,
matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
vector Vector = P, vector Vector = P,
string filename = "", string filename = "",
string projection = "equirectangular", string projection = "equirectangular",
string cubemap_layout = "cross_horizontal",
string interpolation = "linear", string interpolation = "linear",
int compress_as_srgb = 0, int compress_as_srgb = 0,
int ignore_alpha = 0, int ignore_alpha = 0,
Context not available.
if (projection == "equirectangular") if (projection == "equirectangular")
p = environment_texture_direction_to_equirectangular(p); p = environment_texture_direction_to_equirectangular(p);
else else if (projection == "mirror_ball")
p = environment_texture_direction_to_mirrorball(p); p = environment_texture_direction_to_mirrorball(p);
else
p = environment_texture_direction_to_cubemap(p, cubemap_layout);
/* todo: use environment for better texture filtering of equirectangular */ /* todo: use environment for better texture filtering of equirectangular */
Color = (color)texture( Color = (color)texture(
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