bool GLProgram::link()
{
CCASSERT(_program != 0, "Cannot link invalid program");
GLint status = GL_TRUE;
bindPredefinedVertexAttribs();
glLinkProgram(_program);
parseVertexAttribs();
parseUniforms();
clearShader();
#if DEBUG || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
glGetProgramiv(_program, GL_LINK_STATUS, &status);
if (status == GL_FALSE)
{
CCLOG("cocos2d: ERROR: Failed to link program: %i", _program);
GL::deleteProgram(_program);
_program = 0;
}
#endif
return (status == GL_TRUE);
}
bool GLProgram::link()
{
CCASSERT(_program != 0, "Cannot link invalid program");
GLint status = GL_TRUE;
bindPredefinedVertexAttribs();
glLinkProgram(_program);
// Calling glGetProgramiv(...GL_LINK_STATUS...) will force linking of the program at this moment.
// Otherwise, they might be linked when they are used for the first time. (I guess this depends on the driver implementation)
// So it might slow down the "booting" process on certain devices. But, on the other hand it is important to know if the shader
// linked successfully. Some shaders might be downloaded in runtime so, release version should have this check.
// For more info, see Github issue #16231
glGetProgramiv(_program, GL_LINK_STATUS, &status);
if (status == GL_FALSE)
{
CCLOG("cocos2d: ERROR: Failed to link program: %i", _program);
GL::deleteProgram(_program);
_program = 0;
}
else
{
parseVertexAttribs();
parseUniforms();
clearShader();
}
return (status == GL_TRUE);
}
bool GLProgram::link()
{
CCASSERT(_program != 0, "Cannot link invalid program");
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)
if(!_hasShaderCompiler)
{
// precompiled shader program is already linked
//bindPredefinedVertexAttribs();
parseVertexAttribs();
parseUniforms();
return true;
}
#endif
GLint status = GL_TRUE;
bindPredefinedVertexAttribs();
glLinkProgram(_program);
parseVertexAttribs();
parseUniforms();
if (_vertShader)
{
glDeleteShader(_vertShader);
}
if (_fragShader)
{
glDeleteShader(_fragShader);
}
_vertShader = _fragShader = 0;
#if DEBUG || (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
glGetProgramiv(_program, GL_LINK_STATUS, &status);
if (status == GL_FALSE)
{
CCLOG("cocos2d: ERROR: Failed to link program: %i", _program);
GL::deleteProgram(_program);
_program = 0;
}
#endif
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || defined(WP8_SHADER_COMPILER)
if (status == GL_TRUE)
{
CCPrecompiledShaders::getInstance()->addProgram(_program, _shaderId);
}
#endif
return (status == GL_TRUE);
}