static int node_shader_gpu_layer_weight(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
if (!in[1].link)
in[1].link = GPU_builtin(GPU_VIEW_NORMAL);
return GPU_stack_link(mat, "node_layer_weight", in, out, GPU_builtin(GPU_VIEW_POSITION), GPU_builtin(GPU_VIEW_MATRIX));
}
static void node_shader_gpu_volume_attribute(GPUMaterial *mat,
const char *name,
GPUNodeLink **outcol,
GPUNodeLink **outvec,
GPUNodeLink **outf)
{
if (strcmp(name, "density") == 0) {
GPU_link(mat,
"node_attribute_volume_density",
GPU_builtin(GPU_VOLUME_DENSITY),
outcol,
outvec,
outf);
}
else if (strcmp(name, "color") == 0) {
GPU_link(
mat, "node_attribute_volume_color", GPU_builtin(GPU_VOLUME_DENSITY), outcol, outvec, outf);
}
else if (strcmp(name, "flame") == 0) {
GPU_link(
mat, "node_attribute_volume_flame", GPU_builtin(GPU_VOLUME_FLAME), outcol, outvec, outf);
}
else if (strcmp(name, "temperature") == 0) {
GPU_link(mat,
"node_attribute_volume_temperature",
GPU_builtin(GPU_VOLUME_FLAME),
GPU_builtin(GPU_VOLUME_TEMPERATURE),
outcol,
outvec,
outf);
}
else {
*outcol = *outvec = *outf = NULL;
}
}
static int node_shader_gpu_tex_image(GPUMaterial *mat, bNode *node, bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
Image *ima = (Image *)node->id;
ImageUser *iuser = NULL;
NodeTexImage *tex = node->storage;
GPUNodeLink *norm;
int isdata = tex->color_space == SHD_COLORSPACE_NONE;
float blend = tex->projection_blend;
if (!ima)
return GPU_stack_link(mat, "node_tex_image_empty", in, out);
if (!in[0].link)
in[0].link = GPU_attribute(CD_MTFACE, "");
node_shader_gpu_tex_mapping(mat, node, in, out);
switch (tex->projection) {
case SHD_PROJ_FLAT:
GPU_stack_link(mat, "node_tex_image", in, out, GPU_image(ima, iuser, isdata));
break;
case SHD_PROJ_BOX:
GPU_link(mat, "direction_transform_m4v3", GPU_builtin(GPU_VIEW_NORMAL),
GPU_builtin(GPU_INVERSE_VIEW_MATRIX),
&norm);
GPU_link(mat, "direction_transform_m4v3", norm,
GPU_builtin(GPU_INVERSE_OBJECT_MATRIX),
&norm);
GPU_link(mat, "node_tex_image_box", in[0].link,
norm,
GPU_image(ima, iuser, isdata),
GPU_uniform(&blend),
&out[0].link,
&out[1].link);
break;
case SHD_PROJ_SPHERE:
GPU_link(mat, "point_texco_remap_square", in[0].link, &in[0].link);
GPU_link(mat, "point_map_to_sphere", in[0].link, &in[0].link);
GPU_stack_link(mat, "node_tex_image", in, out, GPU_image(ima, iuser, isdata));
break;
case SHD_PROJ_TUBE:
GPU_link(mat, "point_texco_remap_square", in[0].link, &in[0].link);
GPU_link(mat, "point_map_to_tube", in[0].link, &in[0].link);
GPU_stack_link(mat, "node_tex_image", in, out, GPU_image(ima, iuser, isdata));
break;
}
ImBuf *ibuf = BKE_image_acquire_ibuf(ima, iuser, NULL);
if ((tex->color_space == SHD_COLORSPACE_COLOR) &&
ibuf && (ibuf->colormanage_flag & IMB_COLORMANAGE_IS_DATA) == 0 &&
GPU_material_do_color_management(mat))
{
GPU_link(mat, "srgb_to_linearrgb", out[0].link, &out[0].link);
}
BKE_image_release_ibuf(ima, ibuf, NULL);
return true;
}
static int gpu_shader_particle_info(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
return GPU_stack_link(mat, "particle_info", in, out,
GPU_builtin(GPU_PARTICLE_SCALAR_PROPS),
GPU_builtin(GPU_PARTICLE_LOCATION),
GPU_builtin(GPU_PARTICLE_VELOCITY),
GPU_builtin(GPU_PARTICLE_ANG_VELOCITY));
}
static int node_shader_gpu_tex_coord(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
GPUNodeLink *orco = GPU_attribute(CD_ORCO, "");
GPUNodeLink *mtface = GPU_attribute(CD_MTFACE, "");
return GPU_stack_link(mat, "node_tex_coord", in, out,
GPU_builtin(GPU_VIEW_POSITION), GPU_builtin(GPU_VIEW_NORMAL),
GPU_builtin(GPU_INVERSE_VIEW_MATRIX), GPU_builtin(GPU_INVERSE_OBJECT_MATRIX), orco, mtface);
}
static int node_shader_gpu_subsurface_scattering(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
if (!in[5].link)
in[5].link = GPU_builtin(GPU_VIEW_NORMAL);
else
GPU_link(mat, "direction_transform_m4v3", in[5].link, GPU_builtin(GPU_VIEW_MATRIX), &in[5].link);
return GPU_stack_link(mat, "node_subsurface_scattering", in, out);
}
static int node_shader_gpu_layer_weight(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
if (!in[1].link)
in[1].link = GPU_builtin(GPU_VIEW_NORMAL);
else if (GPU_material_use_world_space_shading(mat)) {
GPU_link(mat, "direction_transform_m4v3", in[1].link, GPU_builtin(GPU_VIEW_MATRIX), &in[1].link);
}
return GPU_stack_link(mat, "node_layer_weight", in, out, GPU_builtin(GPU_VIEW_POSITION));
}
static int gpu_shader_geom(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
NodeGeometry *ngeo= (NodeGeometry*)node->storage;
GPUNodeLink *orco = GPU_attribute(CD_ORCO, "");
GPUNodeLink *mtface = GPU_attribute(CD_MTFACE, ngeo->uvname);
GPUNodeLink *mcol = GPU_attribute(CD_MCOL, ngeo->colname);
return GPU_stack_link(mat, "geom", in, out,
GPU_builtin(GPU_VIEW_POSITION), GPU_builtin(GPU_VIEW_NORMAL),
GPU_builtin(GPU_INVERSE_VIEW_MATRIX), orco, mtface, mcol);
}
static int node_shader_gpu_tex_environment(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
Image *ima= (Image*)node->id;
ImageUser *iuser= NULL;
NodeTexImage *tex = node->storage;
int isdata = tex->color_space == SHD_COLORSPACE_NONE;
int ret;
if (!ima)
return GPU_stack_link(mat, "node_tex_environment_empty", in, out);
if (!in[0].link)
in[0].link = GPU_builtin(GPU_VIEW_POSITION);
node_shader_gpu_tex_mapping(mat, node, in, out);
ret = GPU_stack_link(mat, "node_tex_environment", in, out, GPU_image(ima, iuser, isdata));
if (ret) {
ImBuf *ibuf = BKE_image_acquire_ibuf(ima, iuser, NULL);
if (ibuf && (ibuf->colormanage_flag & IMB_COLORMANAGE_IS_DATA) == 0 &&
GPU_material_do_color_management(mat))
{
GPU_link(mat, "srgb_to_linearrgb", out[0].link, &out[0].link);
}
BKE_image_release_ibuf(ima, ibuf, NULL);
}
return ret;
}
static int gpu_shader_bump(GPUMaterial *mat, bNode *node, bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
if (!in[3].link)
in[3].link = GPU_builtin(GPU_VIEW_NORMAL);
else
GPU_link(mat, "direction_transform_m4v3", in[3].link, GPU_builtin(GPU_VIEW_MATRIX), &in[3].link);
float invert = node->custom1;
GPU_stack_link(mat, "node_bump", in, out, GPU_builtin(GPU_VIEW_POSITION), GPU_uniform(&invert));
/* Other nodes are applying view matrix if the input Normal has a link.
* We don't want normal to have view matrix applied twice, so we cancel it here.
*
* TODO(sergey): This is an extra multiplication which cancels each other,
* better avoid this but that requires bigger refactor.
*/
return GPU_link(mat, "direction_transform_m4v3", out[0].link, GPU_builtin(GPU_INVERSE_VIEW_MATRIX), &out[0].link);
}
static int node_shader_gpu_bsdf_velvet(GPUMaterial *mat, bNode *UNUSED(node), GPUNodeStack *in, GPUNodeStack *out)
{
if (!in[2].link)
in[2].link = GPU_builtin(GPU_VIEW_NORMAL);
return GPU_stack_link(mat, "node_bsdf_velvet", in, out);
}
static int node_shader_gpu_bsdf_glass(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
if (!in[3].link)
in[3].link = GPU_builtin(GPU_VIEW_NORMAL);
return GPU_stack_link(mat, "node_bsdf_glass", in, out);
}
static int node_shader_gpu_subsurface_scattering(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
if (!in[5].link)
in[5].link = GPU_builtin(GPU_VIEW_NORMAL);
return GPU_stack_link(mat, "node_subsurface_scattering", in, out);
}
static int node_shader_gpu_tex_coord(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
GPUNodeLink *orco = GPU_attribute(CD_ORCO, "");
GPUNodeLink *mtface = GPU_attribute(CD_MTFACE, "");
GPUMatType type = GPU_Material_get_type(mat);
if (type == GPU_MATERIAL_TYPE_MESH) {
return GPU_stack_link(mat, "node_tex_coord", in, out,
GPU_builtin(GPU_VIEW_POSITION), GPU_builtin(GPU_VIEW_NORMAL),
GPU_builtin(GPU_INVERSE_VIEW_MATRIX), GPU_builtin(GPU_INVERSE_OBJECT_MATRIX),
GPU_builtin(GPU_CAMERA_TEXCO_FACTORS), orco, mtface);
}
else {
return GPU_stack_link(mat, "node_tex_coord_background", in, out,
GPU_builtin(GPU_VIEW_POSITION), GPU_builtin(GPU_VIEW_NORMAL),
GPU_builtin(GPU_INVERSE_VIEW_MATRIX), GPU_builtin(GPU_INVERSE_OBJECT_MATRIX),
GPU_builtin(GPU_CAMERA_TEXCO_FACTORS), orco, mtface);
}
}
static int node_shader_gpu_tex_noise(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
if (!in[0].link) {
in[0].link = GPU_attribute(CD_ORCO, "");
GPU_link(mat, "generated_texco", GPU_builtin(GPU_VIEW_POSITION), in[0].link, &in[0].link);
}
node_shader_gpu_tex_mapping(mat, node, in, out);
return GPU_stack_link(mat, node, "node_tex_noise", in, out);
}
static int node_shader_gpu_tex_environment(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
Image *ima= (Image*)node->id;
ImageUser *iuser= NULL;
if (!ima)
return GPU_stack_link(mat, "node_tex_environment_empty", in, out);
if (!in[0].link)
in[0].link = GPU_builtin(GPU_VIEW_POSITION);
node_shader_gpu_tex_mapping(mat, node, in, out);
return GPU_stack_link(mat, "node_tex_environment", in, out, GPU_image(ima, iuser));
}
static int node_shader_gpu_tex_environment(GPUMaterial *mat, bNode *node, bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
Image *ima = (Image *)node->id;
ImageUser *iuser = NULL;
NodeTexImage *tex = node->storage;
int isdata = tex->color_space == SHD_COLORSPACE_NONE;
if (!ima)
return GPU_stack_link(mat, "node_tex_environment_empty", in, out);
if (!in[0].link) {
GPUMatType type = GPU_Material_get_type(mat);
if (type == GPU_MATERIAL_TYPE_MESH)
in[0].link = GPU_builtin(GPU_VIEW_POSITION);
else
GPU_link(mat, "background_transform_to_world", GPU_builtin(GPU_VIEW_POSITION), &in[0].link);
}
node_shader_gpu_tex_mapping(mat, node, in, out);
if (tex->projection == SHD_PROJ_EQUIRECTANGULAR)
GPU_stack_link(mat, "node_tex_environment_equirectangular", in, out, GPU_image(ima, iuser, isdata));
else
GPU_stack_link(mat, "node_tex_environment_mirror_ball", in, out, GPU_image(ima, iuser, isdata));
ImBuf *ibuf = BKE_image_acquire_ibuf(ima, iuser, NULL);
if (ibuf && (ibuf->colormanage_flag & IMB_COLORMANAGE_IS_DATA) == 0 &&
GPU_material_do_color_management(mat))
{
GPU_link(mat, "srgb_to_linearrgb", out[0].link, &out[0].link);
}
BKE_image_release_ibuf(ima, ibuf, NULL);
return true;
}
static int node_shader_gpu_bsdf_translucent(GPUMaterial *mat, bNode *UNUSED(node), GPUNodeStack *in, GPUNodeStack *out)
{
return GPU_stack_link(mat, "node_bsdf_translucent", in, out, GPU_builtin(GPU_VIEW_NORMAL));
}
static int gpu_shader_normal_map(GPUMaterial *mat, bNode *node, bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
NodeShaderNormalMap *nm = node->storage;
GPUNodeLink *negnorm;
GPUNodeLink *realnorm;
GPUNodeLink *strength;
float d[4] = {0, 0, 0, 0};
if (in[0].link)
strength = in[0].link;
else
strength = GPU_uniform(in[0].vec);
if (in[1].link)
realnorm = in[1].link;
else
realnorm = GPU_uniform(in[1].vec);
negnorm = GPU_builtin(GPU_VIEW_NORMAL);
GPU_link(mat, "math_max", strength, GPU_uniform(d), &strength);
if (GPU_material_use_world_space_shading(mat)) {
/* ******* CYCLES or BLENDER INTERNAL with world space shading flag ******* */
const char *color_to_normal_fnc_name = "color_to_normal_new_shading";
if (nm->space == SHD_SPACE_BLENDER_OBJECT || nm->space == SHD_SPACE_BLENDER_WORLD || !GPU_material_use_new_shading_nodes(mat))
color_to_normal_fnc_name = "color_to_blender_normal_new_shading";
switch (nm->space) {
case SHD_SPACE_TANGENT:
GPU_link(mat, "color_to_normal_new_shading", realnorm, &realnorm);
GPU_link(mat, "node_normal_map", GPU_attribute(CD_TANGENT, nm->uv_map), negnorm, realnorm, &realnorm);
GPU_link(mat, "vec_math_mix", strength, realnorm, GPU_builtin(GPU_VIEW_NORMAL), &out[0].link);
/* for uniform scale this is sufficient to match Cycles */
GPU_link(mat, "direction_transform_m4v3", out[0].link, GPU_builtin(GPU_INVERSE_VIEW_MATRIX), &out[0].link);
GPU_link(mat, "vect_normalize", out[0].link, &out[0].link);
return true;
case SHD_SPACE_OBJECT:
case SHD_SPACE_BLENDER_OBJECT:
GPU_link(mat, "direction_transform_m4v3", negnorm, GPU_builtin(GPU_INVERSE_VIEW_MATRIX), &negnorm);
GPU_link(mat, color_to_normal_fnc_name, realnorm, &realnorm);
GPU_link(mat, "direction_transform_m4v3", realnorm, GPU_builtin(GPU_OBJECT_MATRIX), &realnorm);
break;
case SHD_SPACE_WORLD:
case SHD_SPACE_BLENDER_WORLD:
GPU_link(mat, "direction_transform_m4v3", negnorm, GPU_builtin(GPU_INVERSE_VIEW_MATRIX), &negnorm);
GPU_link(mat, color_to_normal_fnc_name, realnorm, &realnorm);
break;
}
}
else {
/* ************** BLENDER INTERNAL without world space shading flag ******* */
GPU_link(mat, "color_to_normal", realnorm, &realnorm);
GPU_link(mat, "mtex_negate_texnormal", realnorm, &realnorm);
GPU_link(mat, "vec_math_negate", negnorm, &negnorm);
switch (nm->space) {
case SHD_SPACE_TANGENT:
GPU_link(mat, "node_normal_map", GPU_attribute(CD_TANGENT, nm->uv_map), negnorm, realnorm, &realnorm);
break;
case SHD_SPACE_OBJECT:
case SHD_SPACE_BLENDER_OBJECT:
GPU_link(mat, "direction_transform_m4v3", realnorm, GPU_builtin(GPU_LOC_TO_VIEW_MATRIX), &realnorm);
break;
case SHD_SPACE_WORLD:
case SHD_SPACE_BLENDER_WORLD:
GPU_link(mat, "direction_transform_m4v3", realnorm, GPU_builtin(GPU_VIEW_MATRIX), &realnorm);
break;
}
}
GPU_link(mat, "vec_math_mix", strength, realnorm, negnorm, &out[0].link);
GPU_link(mat, "vect_normalize", out[0].link, &out[0].link);
return true;
}
static int node_shader_gpu_tex_environment(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
Image *ima = (Image *)node->id;
NodeTexEnvironment *tex = node->storage;
/* We get the image user from the original node, since GPU image keeps
* a pointer to it and the dependency refreshes the original. */
bNode *node_original = node->original ? node->original : node;
NodeTexImage *tex_original = node_original->storage;
ImageUser *iuser = &tex_original->iuser;
GPUNodeLink *outalpha;
if (!ima) {
return GPU_stack_link(mat, node, "node_tex_environment_empty", in, out);
}
if (!in[0].link) {
GPU_link(mat, "node_tex_environment_texco", GPU_builtin(GPU_VIEW_POSITION), &in[0].link);
}
node_shader_gpu_tex_mapping(mat, node, in, out);
/* Compute texture coordinate. */
if (tex->projection == SHD_PROJ_EQUIRECTANGULAR) {
/* To fix pole issue we clamp the v coordinate. The clamp value depends on the filter size. */
float clamp_size = (ELEM(tex->interpolation, SHD_INTERP_CUBIC, SHD_INTERP_SMART)) ? 1.5 : 0.5;
GPU_link(mat,
"node_tex_environment_equirectangular",
in[0].link,
GPU_constant(&clamp_size),
GPU_image(ima, iuser),
&in[0].link);
}
else {
GPU_link(mat, "node_tex_environment_mirror_ball", in[0].link, &in[0].link);
}
/* Sample texture with correct interpolation. */
switch (tex->interpolation) {
case SHD_INTERP_LINEAR:
/* Force the highest mipmap and don't do anisotropic filtering.
* This is to fix the artifact caused by derivatives discontinuity. */
GPU_link(mat,
"node_tex_image_linear_no_mip",
in[0].link,
GPU_image(ima, iuser),
&out[0].link,
&outalpha);
break;
case SHD_INTERP_CLOSEST:
GPU_link(mat,
"node_tex_image_nearest",
in[0].link,
GPU_image(ima, iuser),
&out[0].link,
&outalpha);
break;
default:
GPU_link(
mat, "node_tex_image_cubic", in[0].link, GPU_image(ima, iuser), &out[0].link, &outalpha);
break;
}
if (out[0].hasoutput) {
GPU_link(mat, "tex_color_alpha_clear", out[0].link, &out[0].link);
}
return true;
}
static int node_shader_gpu_emission(GPUMaterial *mat, bNode *UNUSED(node), GPUNodeStack *in, GPUNodeStack *out)
{
return GPU_stack_link(mat, "node_emission", in, out, GPU_builtin(GPU_VIEW_NORMAL));
}
static int node_shader_gpu_fresnel(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
/* todo: is incoming vector normalized? */
return GPU_stack_link(mat, "node_fresnel", in, out, GPU_builtin(GPU_VIEW_NORMAL), GPU_builtin(GPU_VIEW_POSITION));
}
static int gpu_shader_bump(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
return GPU_stack_link(mat, "node_bump", in, out, GPU_builtin(GPU_VIEW_NORMAL));
}
static int node_shader_gpu_ambient_occlusion(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out)
{
return GPU_stack_link(mat, "node_ambient_occlusion", in, out, GPU_builtin(GPU_VIEW_NORMAL));
}
static int node_shader_gpu_oct_portal_mat(struct GPUMaterial *mat, struct bNode *UNUSED(node), struct bNodeExecData *UNUSED(execdata), struct GPUNodeStack *UNUSED(in), struct GPUNodeStack *out) {
float rgb[4] = {0.1f, 0.1f, 0.1f, 0.5f};
float roughness[4] = {0};
return GPU_stack_link(mat, "node_bsdf_diffuse", 0, out, GPU_uniform(rgb), GPU_uniform(roughness), GPU_builtin(GPU_VIEW_NORMAL));
}
