openspades/Sources/Draw/GLShader.cpp
2013-08-18 16:18:06 +09:00

85 lines
1.8 KiB
C++

//
// GLShader.cpp
// OpenSpades
//
// Created by yvt on 7/13/13.
// Copyright (c) 2013 yvt.jp. All rights reserved.
//
#include "GLShader.h"
#include "../Core/Exception.h"
#include "../Core/Debug.h"
#include <string.h>
namespace spades {
namespace draw {
GLShader::GLShader(IGLDevice *dev, Type type):
device(dev), compiled(false){
SPADES_MARK_FUNCTION();
switch(type){
case VertexShader:
handle = device->CreateShader(IGLDevice::VertexShader);
break;
case FragmentShader:
handle = device->CreateShader(IGLDevice::FragmentShader);
break;
default:
SPInvalidEnum("type", type);
}
}
GLShader::~GLShader() {
SPADES_MARK_FUNCTION();
device->DeleteShader(handle);
}
void GLShader::AddSource(const std::string &src) {
SPADES_MARK_FUNCTION();
sources.push_back(src);
}
void GLShader::Compile() {
SPADES_MARK_FUNCTION();
std::vector<const char *> srcs;
std::vector<int> lens;
for(size_t i = 0; i < sources.size(); i++){
srcs.push_back(sources[i].c_str());
lens.push_back(sources[i].size());
}
device->ShaderSource(handle, srcs.size(),
srcs.data(), lens.data());
device->CompileShader(handle);
if(device->GetShaderInteger(handle, IGLDevice::CompileStatus) == 0){
// error
std::vector<char> errMsg;
errMsg.resize(device->GetShaderInteger(handle, IGLDevice::InfoLogLength) + 1);
IGLDevice::Sizei outLen;
device->GetShaderInfoLog(handle, errMsg.size(), &outLen, errMsg.data());
errMsg[outLen] = 0;
std::string src;
for(size_t i = 0; i < sources.size(); i++){
src += sources[i];
}
std::string err = errMsg.data();
SPRaise("Error while compiling a shader:\n\n%s\n\n"
"Shader source:\n\n%s\n", errMsg.data(),
src.c_str());
}
compiled = true;
}
}
}