97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
/*
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Copyright (c) 2013 yvt
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This file is part of OpenSpades.
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OpenSpades is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenSpades is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenSpades. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "GLShader.h"
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#include "../Core/Exception.h"
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#include "../Core/Debug.h"
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#include <string.h>
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namespace spades {
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namespace draw {
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GLShader::GLShader(IGLDevice *dev, Type type):
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device(dev), compiled(false){
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SPADES_MARK_FUNCTION();
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switch(type){
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case VertexShader:
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handle = device->CreateShader(IGLDevice::VertexShader);
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break;
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case FragmentShader:
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handle = device->CreateShader(IGLDevice::FragmentShader);
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break;
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default:
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SPInvalidEnum("type", type);
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}
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}
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GLShader::~GLShader() {
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SPADES_MARK_FUNCTION();
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device->DeleteShader(handle);
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}
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void GLShader::AddSource(const std::string &src) {
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SPADES_MARK_FUNCTION();
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sources.push_back(src);
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}
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void GLShader::Compile() {
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SPADES_MARK_FUNCTION();
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std::vector<const char *> srcs;
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std::vector<int> lens;
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for(size_t i = 0; i < sources.size(); i++){
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srcs.push_back(sources[i].c_str());
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lens.push_back(sources[i].size());
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}
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device->ShaderSource(handle, srcs.size(),
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srcs.data(), lens.data());
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device->CompileShader(handle);
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if(device->GetShaderInteger(handle, IGLDevice::CompileStatus) == 0){
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// error
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std::vector<char> errMsg;
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errMsg.resize(device->GetShaderInteger(handle, IGLDevice::InfoLogLength) + 1);
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IGLDevice::Sizei outLen;
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device->GetShaderInfoLog(handle, errMsg.size(), &outLen, errMsg.data());
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errMsg[outLen] = 0;
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std::string src;
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for(size_t i = 0; i < sources.size(); i++){
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src += sources[i];
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}
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std::string err = errMsg.data();
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SPRaise("Error while compiling a shader:\n\n%s\n\n"
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"Shader source:\n\n%s\n", errMsg.data(),
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src.substr(0,500).c_str());
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}
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compiled = true;
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}
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}
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}
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