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https://github.com/godotengine/godot.git
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362 lines
11 KiB
C++
362 lines
11 KiB
C++
/*************************************************************************/
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/* test_shader_lang.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "test_shader_lang.h"
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#include "os/main_loop.h"
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#include "os/os.h"
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#include "os/file_access.h"
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#include "scene/gui/control.h"
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#include "scene/gui/text_edit.h"
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#include "print_string.h"
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#include "servers/visual/shader_language.h"
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//#include "drivers/gles2/shader_compiler_gles2.h"
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typedef ShaderLanguage SL;
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namespace TestShaderLang {
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static String _mktab(int p_level) {
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String tb;
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for(int i=0;i<p_level;i++) {
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tb+="\t";
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}
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return tb;
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}
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static String _typestr(SL::DataType p_type) {
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return ShaderLanguage::get_datatype_name(p_type);
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return "";
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}
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static String _prestr(SL::DataPrecision p_pres) {
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switch(p_pres) {
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case SL::PRECISION_LOWP: return "lowp ";
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case SL::PRECISION_MEDIUMP: return "mediump ";
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case SL::PRECISION_HIGHP: return "highp ";
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case SL::PRECISION_DEFAULT: return "";
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}
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return "";
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}
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static String _opstr(SL::Operator p_op) {
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return ShaderLanguage::get_operator_text(p_op);
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}
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static String get_constant_text(SL::DataType p_type, const Vector<SL::ConstantNode::Value>& p_values) {
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switch(p_type) {
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case SL::TYPE_BOOL: return p_values[0].boolean?"true":"false";
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case SL::TYPE_BVEC2: return String()+"bvec2("+(p_values[0].boolean?"true":"false")+(p_values[1].boolean?"true":"false")+")";
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case SL::TYPE_BVEC3: return String()+"bvec3("+(p_values[0].boolean?"true":"false")+","+(p_values[1].boolean?"true":"false")+","+(p_values[2].boolean?"true":"false")+")";
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case SL::TYPE_BVEC4: return String()+"bvec4("+(p_values[0].boolean?"true":"false")+","+(p_values[1].boolean?"true":"false")+","+(p_values[2].boolean?"true":"false")+","+(p_values[3].boolean?"true":"false")+")";
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case SL::TYPE_INT: return rtos(p_values[0].sint);
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case SL::TYPE_IVEC2: return String()+"ivec2("+rtos(p_values[0].sint)+","+rtos(p_values[1].sint)+")";
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case SL::TYPE_IVEC3: return String()+"ivec3("+rtos(p_values[0].sint)+","+rtos(p_values[1].sint)+","+rtos(p_values[2].sint)+")";
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case SL::TYPE_IVEC4: return String()+"ivec4("+rtos(p_values[0].sint)+","+rtos(p_values[1].sint)+","+rtos(p_values[2].sint)+","+rtos(p_values[3].sint)+")";
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case SL::TYPE_UINT: return rtos(p_values[0].real);
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case SL::TYPE_UVEC2: return String()+"uvec2("+rtos(p_values[0].real)+","+rtos(p_values[1].real)+")";
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case SL::TYPE_UVEC3: return String()+"uvec3("+rtos(p_values[0].real)+","+rtos(p_values[1].real)+","+rtos(p_values[2].real)+")";
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case SL::TYPE_UVEC4: return String()+"uvec4("+rtos(p_values[0].real)+","+rtos(p_values[1].real)+","+rtos(p_values[2].real)+","+rtos(p_values[3].real)+")";
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case SL::TYPE_FLOAT: return rtos(p_values[0].real);
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case SL::TYPE_VEC2: return String()+"vec2("+rtos(p_values[0].real)+","+rtos(p_values[1].real)+")";
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case SL::TYPE_VEC3: return String()+"vec3("+rtos(p_values[0].real)+","+rtos(p_values[1].real)+","+rtos(p_values[2].real)+")";
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case SL::TYPE_VEC4: return String()+"vec4("+rtos(p_values[0].real)+","+rtos(p_values[1].real)+","+rtos(p_values[2].real)+","+rtos(p_values[3].real)+")";
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default: ERR_FAIL_V(String());
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}
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}
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static String dump_node_code(SL::Node *p_node,int p_level) {
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String code;
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switch(p_node->type) {
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case SL::Node::TYPE_SHADER: {
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SL::ShaderNode *pnode=(SL::ShaderNode*)p_node;
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for(Map<StringName,SL::ShaderNode::Uniform>::Element *E=pnode->uniforms.front();E;E=E->next()) {
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String ucode="uniform ";
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ucode+=_prestr(E->get().precission);
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ucode+=_typestr(E->get().type);
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ucode+=" "+String(E->key());
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if (E->get().default_value.size()) {
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ucode+=" = "+get_constant_text(E->get().type,E->get().default_value);
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}
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static const char*hint_name[SL::ShaderNode::Uniform::HINT_MAX]={
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"",
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"color",
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"range",
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"albedo",
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"normal",
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"black",
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"white"
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};
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if (E->get().hint)
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ucode+=" : "+String(hint_name[E->get().hint]);
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code+=ucode+"\n";
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}
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for(Map<StringName,SL::ShaderNode::Varying>::Element *E=pnode->varyings.front();E;E=E->next()) {
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String vcode="varying ";
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vcode+=_prestr(E->get().precission);
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vcode+=_typestr(E->get().type);
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vcode+=" "+String(E->key());
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code+=vcode+"\n";
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}
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for(int i=0;i<pnode->functions.size();i++) {
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SL::FunctionNode *fnode=pnode->functions[i].function;
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String header;
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header=_typestr(fnode->return_type)+" "+fnode->name+"(";
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for(int i=0;i<fnode->arguments.size();i++) {
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if (i>0)
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header+=", ";
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header+=_prestr(fnode->arguments[i].precision)+_typestr(fnode->arguments[i].type)+" "+fnode->arguments[i].name;
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}
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header+=")\n";
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code+=header;
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code+=dump_node_code(fnode->body,p_level+1);
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}
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//code+=dump_node_code(pnode->body,p_level);
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} break;
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case SL::Node::TYPE_FUNCTION: {
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} break;
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case SL::Node::TYPE_BLOCK: {
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SL::BlockNode *bnode=(SL::BlockNode*)p_node;
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//variables
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code+=_mktab(p_level-1)+"{\n";
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for(Map<StringName,SL::BlockNode::Variable>::Element *E=bnode->variables.front();E;E=E->next()) {
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code+=_mktab(p_level)+_prestr(E->get().precision)+_typestr(E->get().type)+" "+E->key()+";\n";
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}
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for(int i=0;i<bnode->statements.size();i++) {
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String scode = dump_node_code(bnode->statements[i],p_level);
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if (bnode->statements[i]->type==SL::Node::TYPE_CONTROL_FLOW || bnode->statements[i]->type==SL::Node::TYPE_CONTROL_FLOW) {
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code+=scode; //use directly
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} else {
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code+=_mktab(p_level)+scode+";\n";
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}
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}
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code+=_mktab(p_level-1)+"}\n";
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} break;
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case SL::Node::TYPE_VARIABLE: {
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SL::VariableNode *vnode=(SL::VariableNode*)p_node;
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code=vnode->name;
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} break;
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case SL::Node::TYPE_CONSTANT: {
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SL::ConstantNode *cnode=(SL::ConstantNode*)p_node;
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return get_constant_text(cnode->datatype,cnode->values);
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} break;
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case SL::Node::TYPE_OPERATOR: {
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SL::OperatorNode *onode=(SL::OperatorNode*)p_node;
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switch(onode->op) {
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case SL::OP_ASSIGN:
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case SL::OP_ASSIGN_ADD:
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case SL::OP_ASSIGN_SUB:
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case SL::OP_ASSIGN_MUL:
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case SL::OP_ASSIGN_DIV:
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case SL::OP_ASSIGN_SHIFT_LEFT:
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case SL::OP_ASSIGN_SHIFT_RIGHT:
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case SL::OP_ASSIGN_MOD:
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case SL::OP_ASSIGN_BIT_AND:
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case SL::OP_ASSIGN_BIT_OR:
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case SL::OP_ASSIGN_BIT_XOR:
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code=dump_node_code(onode->arguments[0],p_level)+_opstr(onode->op)+dump_node_code(onode->arguments[1],p_level);
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break;
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case SL::OP_BIT_INVERT:
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case SL::OP_NEGATE:
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case SL::OP_NOT:
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case SL::OP_DECREMENT:
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case SL::OP_INCREMENT:
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code=_opstr(onode->op)+dump_node_code(onode->arguments[0],p_level);
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break;
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case SL::OP_POST_DECREMENT:
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case SL::OP_POST_INCREMENT:
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code=dump_node_code(onode->arguments[0],p_level)+_opstr(onode->op);
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break;
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case SL::OP_CALL:
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case SL::OP_CONSTRUCT:
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code=dump_node_code(onode->arguments[0],p_level)+"(";
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for(int i=1;i<onode->arguments.size();i++) {
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if (i>1)
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code+=", ";
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code+=dump_node_code(onode->arguments[i],p_level);
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}
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code+=")";
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break;
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default: {
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code="("+dump_node_code(onode->arguments[0],p_level)+_opstr(onode->op)+dump_node_code(onode->arguments[1],p_level)+")";
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break;
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}
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}
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} break;
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case SL::Node::TYPE_CONTROL_FLOW: {
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SL::ControlFlowNode *cfnode=(SL::ControlFlowNode*)p_node;
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if (cfnode->flow_op==SL::FLOW_OP_IF) {
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code+=_mktab(p_level)+"if ("+dump_node_code(cfnode->expressions[0],p_level)+")\n";
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code+=dump_node_code(cfnode->blocks[0],p_level+1);
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if (cfnode->blocks.size()==2) {
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code+=_mktab(p_level)+"else\n";
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code+=dump_node_code(cfnode->blocks[1],p_level+1);
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}
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} else if (cfnode->flow_op==SL::FLOW_OP_RETURN) {
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if (cfnode->blocks.size()) {
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code="return "+dump_node_code(cfnode->blocks[0],p_level);
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} else {
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code="return";
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}
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}
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} break;
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case SL::Node::TYPE_MEMBER: {
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SL::MemberNode *mnode=(SL::MemberNode*)p_node;
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code=dump_node_code(mnode->owner,p_level)+"."+mnode->name;
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} break;
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}
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return code;
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}
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static Error recreate_code(void *p_str,SL::ShaderNode *p_program) {
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String *str=(String*)p_str;
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*str=dump_node_code(p_program,0);
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return OK;
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}
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MainLoop* test() {
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List<String> cmdlargs = OS::get_singleton()->get_cmdline_args();
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if (cmdlargs.empty()) {
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//try editor!
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print_line("usage: godot -test shader_lang <shader>");
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return NULL;
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}
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String test = cmdlargs.back()->get();
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FileAccess *fa = FileAccess::open(test,FileAccess::READ);
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if (!fa) {
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ERR_FAIL_V(NULL);
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}
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String code;
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while(true) {
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CharType c = fa->get_8();
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if (fa->eof_reached())
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break;
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code+=c;
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}
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SL sl;
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print_line("tokens:\n\n"+sl.token_debug(code));
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Map<StringName,Map<StringName,SL::DataType> > dt;
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dt["fragment"]["ALBEDO"]=SL::TYPE_VEC3;
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Set<String> rm;
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rm.insert("popo");
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Error err = sl.compile(code,dt,rm);
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if (err) {
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print_line("Error at line: "+rtos(sl.get_error_line())+": "+sl.get_error_text());
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return NULL;
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} else {
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String code;
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recreate_code(&code,sl.get_shader());
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print_line("code:\n\n"+code);
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}
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return NULL;
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}
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}
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