blender/intern/cycles/kernel/svm/svm_tex_coord.h
Campbell Barton 857dedbc58 style cleanup
2012-05-27 00:36:50 +00:00

206 lines
4.8 KiB
C

/*
* Copyright 2011, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
CCL_NAMESPACE_BEGIN
/* Texture Coordinate Node */
__device_inline float3 svm_background_offset(KernelGlobals *kg)
{
Transform cameratoworld = kernel_data.cam.cameratoworld;
return make_float3(cameratoworld.x.w, cameratoworld.y.w, cameratoworld.z.w);
}
__device_inline float3 svm_world_to_ndc(KernelGlobals *kg, ShaderData *sd, float3 P)
{
if(kernel_data.cam.type != CAMERA_PANORAMA) {
if(sd->object != ~0)
P += svm_background_offset(kg);
Transform tfm = kernel_data.cam.worldtondc;
return transform_perspective(&tfm, P);
}
else {
Transform tfm = kernel_data.cam.worldtocamera;
if(sd->object != ~0)
P = normalize(transform_point(&tfm, P));
else
P = normalize(transform_direction(&tfm, P));
float2 uv = direction_to_panorama(kg, P);
return make_float3(uv.x, uv.y, 0.0f);
}
}
__device void svm_node_tex_coord(KernelGlobals *kg, ShaderData *sd, float *stack, uint type, uint out_offset)
{
float3 data;
switch(type) {
case NODE_TEXCO_OBJECT: {
if(sd->object != ~0) {
data = sd->P;
object_inverse_position_transform(kg, sd, &data);
}
else
data = sd->P;
break;
}
case NODE_TEXCO_NORMAL: {
if(sd->object != ~0) {
data = sd->N;
object_inverse_normal_transform(kg, sd, &data);
}
else
data = sd->N;
break;
}
case NODE_TEXCO_CAMERA: {
Transform tfm = kernel_data.cam.worldtocamera;
if(sd->object != ~0)
data = transform_point(&tfm, sd->P);
else
data = transform_point(&tfm, sd->P + svm_background_offset(kg));
break;
}
case NODE_TEXCO_WINDOW: {
data = svm_world_to_ndc(kg, sd, sd->P);
break;
}
case NODE_TEXCO_REFLECTION: {
if(sd->object != ~0)
data = 2.0f*dot(sd->N, sd->I)*sd->N - sd->I;
else
data = sd->I;
break;
}
}
stack_store_float3(stack, out_offset, data);
}
__device void svm_node_tex_coord_bump_dx(KernelGlobals *kg, ShaderData *sd, float *stack, uint type, uint out_offset)
{
#ifdef __RAY_DIFFERENTIALS__
float3 data;
switch(type) {
case NODE_TEXCO_OBJECT: {
if(sd->object != ~0) {
data = sd->P + sd->dP.dx;
object_inverse_position_transform(kg, sd, &data);
}
else
data = sd->P + sd->dP.dx;
break;
}
case NODE_TEXCO_NORMAL: {
if(sd->object != ~0) {
data = sd->N;
object_inverse_normal_transform(kg, sd, &data);
}
else
data = sd->N;
break;
}
case NODE_TEXCO_CAMERA: {
Transform tfm = kernel_data.cam.worldtocamera;
if(sd->object != ~0)
data = transform_point(&tfm, sd->P + sd->dP.dx);
else
data = transform_point(&tfm, sd->P + sd->dP.dx + svm_background_offset(kg));
break;
}
case NODE_TEXCO_WINDOW: {
data = svm_world_to_ndc(kg, sd, sd->P + sd->dP.dx);
break;
}
case NODE_TEXCO_REFLECTION: {
if(sd->object != ~0)
data = 2.0f*dot(sd->N, sd->I)*sd->N - sd->I;
else
data = sd->I;
break;
}
}
stack_store_float3(stack, out_offset, data);
#else
svm_node_tex_coord(kg, sd, stack, type, out_offset);
#endif
}
__device void svm_node_tex_coord_bump_dy(KernelGlobals *kg, ShaderData *sd, float *stack, uint type, uint out_offset)
{
#ifdef __RAY_DIFFERENTIALS__
float3 data;
switch(type) {
case NODE_TEXCO_OBJECT: {
if(sd->object != ~0) {
data = sd->P + sd->dP.dy;
object_inverse_position_transform(kg, sd, &data);
}
else
data = sd->P + sd->dP.dy;
break;
}
case NODE_TEXCO_NORMAL: {
if(sd->object != ~0) {
data = sd->N;
object_inverse_normal_transform(kg, sd, &data);
}
else
data = sd->N;
break;
}
case NODE_TEXCO_CAMERA: {
Transform tfm = kernel_data.cam.worldtocamera;
if(sd->object != ~0)
data = transform_point(&tfm, sd->P + sd->dP.dy);
else
data = transform_point(&tfm, sd->P + sd->dP.dy + svm_background_offset(kg));
break;
}
case NODE_TEXCO_WINDOW: {
data = svm_world_to_ndc(kg, sd, sd->P + sd->dP.dy);
break;
}
case NODE_TEXCO_REFLECTION: {
if(sd->object != ~0)
data = 2.0f*dot(sd->N, sd->I)*sd->N - sd->I;
else
data = sd->I;
break;
}
}
stack_store_float3(stack, out_offset, data);
#else
svm_node_tex_coord(kg, sd, stack, type, out_offset);
#endif
}
CCL_NAMESPACE_END