Cycles Standalone: Basic support for external OSL shaders.

* Very simple implementation, only allows for 1 output socket. As we haven't decided yet whether we keep the XML API, rather not spend more time on this now.

* To use an external osl shader, put the .osl file next to the xml file.
* Parameters: "output" is the output socket name, "output_type" the variable type (float, color and closure color are supported).
Example:
<osl_shader name="tex" src="ramp_closure.osl" output="Phong" output_type="closure color" />
<connect from="tex Phong" to="output surface" />
This commit is contained in:
Thomas Dinges 2014-01-26 16:22:19 +01:00
parent bb83bdf891
commit 12109dd18e
1 changed files with 26 additions and 0 deletions

View File

@ -379,6 +379,32 @@ static void xml_read_shader_graph(const XMLReadState& state, Shader *shader, pug
snode = env;
}
else if(string_iequals(node.name(), "osl_shader")) {
OSLScriptNode *osl = new OSLScriptNode();
/* Source */
xml_read_string(&osl->filepath, node, "src");
osl->filepath = path_join(state.base, osl->filepath);
/* Outputs */
string output = "", output_type = "";
ShaderSocketType type = SHADER_SOCKET_FLOAT;
xml_read_string(&output, node, "output");
xml_read_string(&output_type, node, "output_type");
if(output_type == "float")
type = SHADER_SOCKET_FLOAT;
else if(output_type == "closure color")
type = SHADER_SOCKET_CLOSURE;
else if(output_type == "color")
type = SHADER_SOCKET_COLOR;
osl->output_names.push_back(ustring(output));
osl->add_output(osl->output_names.back().c_str(), type);
snode = osl;
}
else if(string_iequals(node.name(), "sky_texture")) {
SkyTextureNode *sky = new SkyTextureNode();