bool GraphicsGL3::Init(
const std::string & shader_path,
unsigned resx,
unsigned resy,
unsigned antialiasing,
bool shadows,
int /*shadow_distance*/,
int /*shadow_quality*/,
int reflection_type,
const std::string & static_reflectionmap_file,
const std::string & /*static_ambientmap_file*/,
int anisotropy,
int texturesize,
int /*lighting_quality*/,
bool bloom,
bool normalmaps,
bool /*dynamicsky*/,
const std::string & render_config,
std::ostream & info_output,
std::ostream & error_output)
{
rendercfg = render_config;
shaderpath = shader_path;
// first, see if we support the required gl version by attempting to initialize the GL wrapper
gl.setInfoOutput(info_output);
gl.setErrorOutput(error_output);
if (!gl.initialize())
{
error_output << "Initialization of GL3 failed." << std::endl;
return false;
}
#ifdef _WIN32
// workaround for broken vao implementation Intel/Windows
{
const std::string vendor = (const char*)glGetString(GL_VENDOR);
if (vendor == "Intel")
vertex_buffer.BindElementBufferExplicitly();
}
#endif
// set up our graphical configuration option conditions
bool fsaa = (antialiasing > 1);
// add the conditions to the set
#define ADDCONDITION(x) if (x) conditions.insert(#x)
ADDCONDITION(bloom);
ADDCONDITION(normalmaps);
ADDCONDITION(fsaa);
ADDCONDITION(shadows);
#undef ADDCONDITION
if (reflection_type >= 1)
conditions.insert("reflections_low");
if (reflection_type >= 2)
conditions.insert("reflections_high");
// load the reflection cubemap
if (!static_reflectionmap_file.empty())
{
TextureInfo t;
t.cube = true;
t.verticalcross = true;
t.mipmap = true;
t.anisotropy = anisotropy;
t.maxsize = TextureInfo::Size(texturesize);
static_reflection.Load(static_reflectionmap_file, t, error_output);
}
// this information is needed to initialize the renderer in ReloadShaders
w = resx;
h = resy;
// initialize the renderer
bool success = ReloadShaders(info_output, error_output);
initialized = success;
return success;
}
bool GraphicsGL2::EnableShaders(std::ostream & info_output, std::ostream & error_output)
{
CheckForOpenGLErrors("EnableShaders: start", error_output);
// unload shaders
glUseProgramObjectARB(0);
shaders.clear();
CheckForOpenGLErrors("EnableShaders: shader unload", error_output);
// unload inputs/outputs
render_outputs.clear();
texture_outputs.clear();
texture_inputs.clear();
CheckForOpenGLErrors("EnableShaders: FBO deinit", error_output);
// reload configuration
config = GraphicsConfig();
std::string rcpath = shaderpath + "/" + renderconfigfile;
if (!config.Load(rcpath, error_output))
{
error_output << "EnableShaders: Error loading render configuration file: " << rcpath << std::endl;
return false;
}
bool ssao = (lighting > 0);
bool ssao_low = (lighting == 1);
bool ssao_high = (lighting == 2);
bool reflection_disabled = (reflection_status == REFLECTION_DISABLED);
bool reflection_dynamic = (reflection_status == REFLECTION_DYNAMIC);
bool shadows_near = shadows;
bool shadows_medium = shadows && shadow_distance > 0;
bool shadows_far = shadows && shadow_distance > 1;
bool shadow_quality_low = shadows && (shadow_quality == 0);
bool shadow_quality_medium = shadows && (shadow_quality == 1);
bool shadow_quality_high = shadows && (shadow_quality == 2);
bool shadow_quality_vhigh = shadows && (shadow_quality == 3);
bool shadow_quality_ultra = shadows && (shadow_quality == 4);
// for now, map vhigh and ultra to high
shadow_quality_high = shadow_quality_high || shadow_quality_vhigh || shadow_quality_ultra;
shadow_quality_vhigh = false;
shadow_quality_ultra = true;
conditions.clear();
if (fsaa > 1) conditions.insert("fsaa");
#define ADDCONDITION(x) if (x) conditions.insert(#x)
ADDCONDITION(bloom);
ADDCONDITION(normalmaps);
ADDCONDITION(ssao);
ADDCONDITION(ssao_low);
ADDCONDITION(ssao_high);
ADDCONDITION(reflection_disabled);
ADDCONDITION(reflection_dynamic);
ADDCONDITION(shadows_near);
ADDCONDITION(shadows_medium);
ADDCONDITION(shadows_far);
ADDCONDITION(shadow_quality_low);
ADDCONDITION(shadow_quality_medium);
ADDCONDITION(shadow_quality_high);
ADDCONDITION(shadow_quality_vhigh);
// ADDCONDITION(shadow_quality_ultra);
ADDCONDITION(sky_dynamic);
#undef ADDCONDITION
// add some common textures
if (reflection_status == REFLECTION_STATIC)
texture_inputs["reflection_cube"] = static_reflection;
texture_inputs["ambient_cube"] = static_ambient;
// setup frame buffer textures
const bool has_texture_float = GLEW_ARB_texture_float && GLEW_ARB_half_float_pixel;
for (std::vector <GraphicsConfigOutput>::const_iterator i = config.outputs.begin(); i != config.outputs.end(); i++)
{
if (!i->conditions.Satisfied(conditions))
continue;
if (texture_outputs.find(i->name) != texture_outputs.end())
{
error_output << "Ignore duplicate definiion of output: " << i->name << std::endl;
continue;
}
if (i->type == "framebuffer")
{
render_outputs[i->name].RenderToFramebuffer(w, h);
}
else
{
FrameBufferTexture::Target target = TextureTargetFromString(i->type);
FrameBufferTexture::Format format = TextureFormatFromString(i->format);
if (!has_texture_float && (format == FrameBufferTexture::RGBA16 || format == FrameBufferTexture::RGB16))
{
error_output << "Your video card doesn't support floating point textures." << std::endl;
error_output << "Failed to load render output: " << i->name << " " << i->type << std::endl;
return false;
}
// initialize fbtexture
int multisampling = (i->multisample < 0) ? fsaa : 0;
FrameBufferTexture & fbtex = texture_outputs[i->name];
fbtex.Init(
i->width.GetSize(w), i->height.GetSize(h),
target, format, (i->filter == "nearest"), i->mipmap,
error_output, multisampling, (i->format == "depthshadow"));
// register texture as input
texture_inputs[i->name] = fbtex;
}
info_output << "Initialized render output: " << i->name;
info_output << (i->type != "framebuffer" ? " (FBO)" : " (framebuffer alias)") << std::endl;
}
render_outputs["framebuffer"].RenderToFramebuffer(w, h);
// gen graphics config shaders map
typedef std::map <std::string, const GraphicsConfigShader *> ConfigShaderMap;
ConfigShaderMap config_shaders;
for (std::vector <GraphicsConfigShader>::const_iterator s = config.shaders.begin(); s != config.shaders.end(); s++)
{
std::pair <ConfigShaderMap::iterator, bool> result = config_shaders.insert(std::make_pair(s->name, &*s));
if (!result.second)
error_output << "Ignore duplicate definition of shader: " << s->name << std::endl;
}
// setup frame buffer objects and shaders
std::vector <std::string> shader_uniforms(Uniforms::str, end(Uniforms::str));
std::vector <std::string> shader_defines;
GetShaderDefines(shader_defines);
for (std::vector <GraphicsConfigPass>::const_iterator i = config.passes.begin(); i != config.passes.end(); i++)
{
// check conditions
if (!i->conditions.Satisfied(conditions))
continue;
// load pass output
const std::string & outname = i->output;
if (render_outputs.find(outname) == render_outputs.end())
{
// collect a list of textures for the outputs
std::vector <std::string> outputs = Tokenize(outname, " ");
std::vector <FrameBufferTexture*> fbotex;
for (std::vector <std::string>::const_iterator o = outputs.begin(); o != outputs.end(); o++)
{
texture_output_map_type::iterator to = texture_outputs.find(*o);
if (to != texture_outputs.end())
{
fbotex.push_back(&to->second);
}
}
if (fbotex.empty())
{
error_output << "None of these outputs are active: " << outname << std::endl;
return false;
}
// initialize fbo
FrameBufferObject & fbo = render_outputs[outname].RenderToFBO();
fbo.Init(glstate, fbotex, error_output);
}
// load pass shader
const std::string & shadername = i->shader;
if (shaders.find(shadername) == shaders.end())
{
ConfigShaderMap::const_iterator csi = config_shaders.find(shadername);
if (csi == config_shaders.end())
{
error_output << "Shader not defined: " << shadername << std::endl;
return false;
}
const GraphicsConfigShader * cs = csi->second;
std::vector <std::string> defines = Tokenize(cs->defines, " ");
defines.reserve(defines.size() + shader_defines.size());
defines.insert(defines.end(), shader_defines.begin(), shader_defines.end());
Shader & shader = shaders[cs->name];
if (!shader.Load(
shaderpath + "/" + cs->vertex,
shaderpath + "/" + cs->fragment,
defines, shader_uniforms,
info_output, error_output))
{
return false;
}
}
}
return true;
}