vcglib/wrap/glw/framebuffer.h

731 lines
19 KiB
C++

#ifndef GLW_FRAMEBUFFER_H
#define GLW_FRAMEBUFFER_H
#include "./texture2d.h"
#include "./renderbuffer.h"
#include <vector>
#include <map>
#include <set>
namespace glw
{
class RenderTarget
{
public:
typedef void BaseType;
typedef RenderTarget ThisType;
RenderableHandle target;
GLint level;
GLint layer;
GLenum face;
RenderTarget(void)
{
this->clear();
}
RenderTarget(RenderableHandle & rTarget, GLint rLevel, GLint rLayer, GLenum rFace)
: target (rTarget)
, level (rLevel)
, layer (rLayer)
, face (rFace)
{
;
}
RenderTarget(RenderableHandle & rTarget)
: target (rTarget)
, level (0)
, layer (0)
, face (GL_NONE)
{
;
}
void clear(void)
{
this->target.setNull();
this->level = 0;
this->layer = -1;
this->face = GL_NONE;
}
bool isNull(void) const
{
return this->target.isNull();
}
};
typedef std::vector<RenderTarget> RenderTargetVector;
inline RenderTarget texture2DTarget(Texture2DHandle & handle, GLint level = 0)
{
return RenderTarget(handle, level, 0, GL_NONE);
}
inline RenderTarget renderbufferTarget(RenderbufferHandle & handle)
{
return RenderTarget(handle, 0, 0, GL_NONE);
}
class RenderTargetMapping
{
public:
typedef void BaseType;
typedef RenderTargetMapping ThisType;
typedef std::map<GLuint, RenderTarget> Map;
typedef Map::const_iterator ConstIterator;
typedef Map::iterator Iterator;
typedef Map::value_type Value;
Map bindings;
RenderTargetMapping(void)
{
this->clear();
}
void clear(void)
{
this->bindings.clear();
}
const RenderTarget & operator [] (GLuint attachmentIndex) const
{
return this->bindings.find(attachmentIndex)->second;
}
RenderTarget & operator [] (GLuint attachmentIndex)
{
return this->bindings[attachmentIndex];
}
};
class RenderTargetBinding
{
public:
typedef void BaseType;
typedef RenderTargetBinding ThisType;
typedef std::map<GLuint, GLuint> Map;
typedef Map::const_iterator ConstIterator;
typedef Map::iterator Iterator;
typedef Map::value_type Value;
Map bindings;
RenderTargetBinding(void)
{
this->clear();
}
void clear(void)
{
this->bindings.clear();
}
GLuint operator [] (GLuint attachmentIndex) const
{
return this->bindings.find(attachmentIndex)->second;
}
GLuint & operator [] (GLuint attachmentIndex)
{
return this->bindings[attachmentIndex];
}
};
class FramebufferArguments : public ObjectArguments
{
public:
typedef ObjectArguments BaseType;
typedef FramebufferArguments ThisType;
RenderTargetMapping colorTargets;
RenderTarget depthTarget;
RenderTarget stencilTarget;
RenderTargetBinding targetInputs;
FramebufferArguments(void)
: BaseType()
{
;
}
void clear(void)
{
BaseType::clear();
this->colorTargets .clear();
this->depthTarget .clear();
this->stencilTarget .clear();
this->targetInputs .clear();
}
};
class Framebuffer : public Object
{
friend class Context;
public:
typedef Object BaseType;
typedef Framebuffer ThisType;
virtual ~Framebuffer(void)
{
this->destroy();
}
virtual Type type(void) const
{
return FramebufferType;
}
const FramebufferArguments & arguments(void) const
{
return this->m_config;
}
bool setColorTarget(GLenum target, GLint unit, GLint index, const RenderTarget & renderTarget)
{
(void)unit;
GLW_ASSERT(this->isValid());
this->m_config.colorTargets[index].clear();
const bool r = this->attachTarget(target, GL_COLOR_ATTACHMENT0 + index, renderTarget);
if (!r) return false;
this->m_config.colorTargets[index] = renderTarget;
return true;
}
bool removeColorTarget(GLenum target, GLint unit, GLint index)
{
(void)unit;
GLW_ASSERT(this->isValid());
glFramebufferRenderbuffer(target, GL_COLOR_ATTACHMENT0 + index, GL_RENDERBUFFER, 0);
this->m_config.colorTargets[index].clear();
return true;
}
bool setDepthTarget(GLenum target, GLint unit, const RenderTarget & renderTarget)
{
(void)unit;
GLW_ASSERT(this->isValid());
this->m_config.depthTarget.clear();
const bool r = this->attachTarget(target, GL_DEPTH_ATTACHMENT, renderTarget);
if (!r) return false;
this->m_config.depthTarget = renderTarget;
return true;
}
bool removeDepthTarget(GLenum target, GLint unit)
{
(void)unit;
GLW_ASSERT(this->isValid());
glFramebufferRenderbuffer(target, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, 0);
this->m_config.depthTarget.clear();
return true;
}
bool setStencilTarget(GLenum target, GLint unit, const RenderTarget & renderTarget)
{
(void)unit;
GLW_ASSERT(this->isValid());
this->m_config.stencilTarget.clear();
const bool r = this->attachTarget(target, GL_STENCIL_ATTACHMENT, renderTarget);
if (!r) return false;
this->m_config.stencilTarget = renderTarget;
return true;
}
bool removeStencilTarget(GLenum target, GLint unit)
{
(void)unit;
GLW_ASSERT(this->isValid());
glFramebufferRenderbuffer(target, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
this->m_config.stencilTarget.clear();
return true;
}
bool readColorPixels(GLenum target, GLint unit, GLint index, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid * data)
{
(void)target;
(void)unit;
GLW_ASSERT(this->isValid());
if (this->m_config.colorTargets.bindings.count(index) <= 0)
{
GLW_ASSERT(0);
return false;
}
glReadBuffer(GL_COLOR_ATTACHMENT0 + index);
glReadPixels(x, y, width, height, format, type, data);
return true;
}
bool readDepthPixels(GLenum target, GLint unit, GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
{
(void)target;
(void)unit;
GLW_ASSERT(this->isValid());
if (this->m_config.depthTarget.isNull())
{
GLW_ASSERT(0);
return false;
}
glReadPixels(x, y, width, height, GL_DEPTH_COMPONENT, type, data);
return true;
}
bool readStencilPixels(GLenum target, GLint unit, GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
{
(void)target;
(void)unit;
GLW_ASSERT(this->isValid());
if (this->m_config.stencilTarget.isNull())
{
GLW_ASSERT(0);
return false;
}
glReadPixels(x, y, width, height, GL_STENCIL_INDEX, type, data);
return true;
}
protected:
Framebuffer(Context * ctx)
: BaseType(ctx)
{
;
}
bool create(const FramebufferArguments & args)
{
this->destroy();
GLint boundNameDraw = 0;
glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &boundNameDraw);
GLint boundNameRead = 0;
glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &boundNameRead);
glGenFramebuffers(1, &(this->m_name));
glBindFramebuffer(GL_FRAMEBUFFER, this->m_name);
this->configure(GL_FRAMEBUFFER, args);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, boundNameDraw);
glBindFramebuffer(GL_READ_FRAMEBUFFER, boundNameRead);
return true;
}
virtual void doDestroy(void)
{
glDeleteFramebuffers(1, &(this->m_name));
this->m_config.clear();
}
virtual bool doIsValid(void) const
{
return true;
}
private:
FramebufferArguments m_config;
void configure(GLenum target, const FramebufferArguments & args)
{
this->m_config.clear();
for (RenderTargetMapping::ConstIterator it=args.colorTargets.bindings.begin(); it!=args.colorTargets.bindings.end(); ++it)
{
const bool colorAttached = this->attachTarget(target, GL_COLOR_ATTACHMENT0 + it->first, it->second);
if (!colorAttached) continue;
this->m_config.colorTargets[it->first] = it->second;
}
const bool depthAttached = this->attachTarget(target, GL_DEPTH_ATTACHMENT, args.depthTarget);
if (depthAttached) this->m_config.depthTarget = args.depthTarget;
const bool stencilAttached = this->attachTarget(target, GL_STENCIL_ATTACHMENT, args.stencilTarget);
if (stencilAttached) this->m_config.stencilTarget = args.stencilTarget;
if (this->m_config.colorTargets.bindings.empty())
{
glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);
}
else
{
std::vector<GLenum> drawBuffers;
drawBuffers.reserve(args.targetInputs.bindings.size());
for (RenderTargetBinding::ConstIterator it=args.targetInputs.bindings.begin(); it!=args.targetInputs.bindings.end(); ++it)
{
const GLuint fragOutput = it->second;
const GLuint attachmentIndex = GL_COLOR_ATTACHMENT0 + it->first;
if (drawBuffers.size() <= size_t(fragOutput))
{
drawBuffers.resize(size_t(fragOutput + 1), GL_NONE);
}
drawBuffers[fragOutput] = attachmentIndex;
this->m_config.targetInputs[it->first] = fragOutput;
}
glDrawBuffers(GLsizei(drawBuffers.size()), &(drawBuffers[0]));
glReadBuffer(drawBuffers[0]);
}
}
bool attachTarget(GLenum target, GLenum attachment, const RenderTarget & renderTarget)
{
const RenderableHandle & handle = renderTarget.target;
if (!handle)
{
glFramebufferRenderbuffer(target, attachment, GL_RENDERBUFFER, 0);
return false;
}
switch (handle->type())
{
case RenderbufferType : glFramebufferRenderbuffer (target, attachment, GL_RENDERBUFFER, handle->name() ); break;
case Texture2DType : glFramebufferTexture2D (target, attachment, GL_TEXTURE_2D, handle->name(), renderTarget.level); break;
default : GLW_ASSERT(0); break;
}
return true;
}
};
namespace detail { template <> struct BaseOf <Framebuffer> { typedef Object Type; }; };
typedef detail::ObjectSharedPointerTraits <Framebuffer> ::Type FramebufferPtr;
class SafeFramebuffer : public SafeObject
{
friend class Context;
friend class BoundFramebuffer;
public:
typedef SafeObject BaseType;
typedef SafeFramebuffer ThisType;
const FramebufferArguments & arguments(void) const
{
return this->object()->arguments();
}
protected:
SafeFramebuffer(const FramebufferPtr & program)
: BaseType(program)
{
;
}
const FramebufferPtr & object(void) const
{
return static_cast<const FramebufferPtr &>(BaseType::object());
}
FramebufferPtr & object(void)
{
return static_cast<FramebufferPtr &>(BaseType::object());
}
};
namespace detail { template <> struct BaseOf <SafeFramebuffer> { typedef SafeObject Type; }; };
namespace detail { template <> struct ObjectBase <SafeFramebuffer> { typedef Framebuffer Type; }; };
namespace detail { template <> struct ObjectSafe <Framebuffer > { typedef SafeFramebuffer Type; }; };
typedef detail::ObjectSharedPointerTraits <SafeFramebuffer> ::Type FramebufferHandle;
class FramebufferBindingParams : public ObjectBindingParams
{
public:
typedef ObjectBindingParams BaseType;
typedef FramebufferBindingParams ThisType;
FramebufferBindingParams(void)
: BaseType()
{
;
}
FramebufferBindingParams(GLenum target)
: BaseType(target, 0)
{
;
}
};
class BoundFramebuffer : public BoundObject
{
friend class Context;
public:
typedef BoundObject BaseType;
typedef BoundFramebuffer ThisType;
BoundFramebuffer(void)
: BaseType()
{
;
}
const FramebufferHandle & handle(void) const
{
return static_cast<const FramebufferHandle &>(BaseType::handle());
}
FramebufferHandle & handle(void)
{
return static_cast<FramebufferHandle &>(BaseType::handle());
}
GLenum getStatus(void) const
{
return glCheckFramebufferStatus(this->m_target);
}
bool isComplete(void) const
{
return (this->getStatus() == GL_FRAMEBUFFER_COMPLETE);
}
bool setColorTarget(GLint index, const RenderTarget & renderTarget)
{
return this->object()->setColorTarget(this->m_target, this->m_unit, index, renderTarget);
}
bool removeColorTarget(GLint index)
{
return this->object()->removeColorTarget(this->m_target, this->m_unit, index);
}
bool setDepthTarget(const RenderTarget & renderTarget)
{
return this->object()->setDepthTarget(this->m_target, this->m_unit, renderTarget);
}
bool removeDepthTarget(void)
{
return this->object()->removeDepthTarget(this->m_target, this->m_unit);
}
bool setStencilTarget(const RenderTarget & renderTarget)
{
return this->object()->setStencilTarget(this->m_target, this->m_unit, renderTarget);
}
bool removeStencilTarget(void)
{
return this->object()->removeStencilTarget(this->m_target, this->m_unit);
}
protected:
BoundFramebuffer(const FramebufferHandle & handle, const FramebufferBindingParams & params)
: BaseType(handle, params)
{
;
}
const FramebufferPtr & object(void) const
{
return this->handle()->object();
}
FramebufferPtr & object(void)
{
return this->handle()->object();
}
virtual void bind(void)
{
glBindFramebuffer(this->m_target, this->object()->name());
}
virtual void unbind(void)
{
glBindFramebuffer(this->m_target, 0);
}
};
namespace detail { template <> struct ParamsOf <BoundFramebuffer> { typedef FramebufferBindingParams Type; }; };
namespace detail { template <> struct BaseOf <BoundFramebuffer> { typedef BoundObject Type; }; };
namespace detail { template <> struct ObjectBase <BoundFramebuffer> { typedef Framebuffer Type; }; };
namespace detail { template <> struct ObjectBound <Framebuffer > { typedef BoundFramebuffer Type; }; };
typedef detail::ObjectSharedPointerTraits <BoundFramebuffer> ::Type BoundFramebufferHandle;
class ReadFramebufferBindingParams : public FramebufferBindingParams
{
public:
typedef FramebufferBindingParams BaseType;
typedef ReadFramebufferBindingParams ThisType;
ReadFramebufferBindingParams(void)
: BaseType(GL_READ_FRAMEBUFFER)
{
;
}
};
class BoundReadFramebuffer : public BoundFramebuffer
{
friend class Context;
public:
typedef BoundFramebuffer BaseType;
typedef BoundReadFramebuffer ThisType;
BoundReadFramebuffer(void)
: BaseType()
{
;
}
bool readColorPixels(GLint index, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid * data)
{
return this->object()->readColorPixels(this->m_target, this->m_unit, index, x, y, width, height, format, type, data);
}
bool readDepthPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
{
return this->object()->readDepthPixels(this->m_target, this->m_unit, x, y, width, height, type, data);
}
bool readStencilPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
{
return this->object()->readStencilPixels(this->m_target, this->m_unit, x, y, width, height, type, data);
}
protected:
BoundReadFramebuffer(const FramebufferHandle & handle, const ReadFramebufferBindingParams & params)
: BaseType(handle, params)
{
;
}
};
namespace detail { template <> struct ParamsOf <BoundReadFramebuffer> { typedef ReadFramebufferBindingParams Type; }; };
namespace detail { template <> struct BaseOf <BoundReadFramebuffer> { typedef BoundFramebuffer Type; }; };
namespace detail { template <> struct ObjectBase <BoundReadFramebuffer> { typedef Framebuffer Type; }; };
typedef detail::ObjectSharedPointerTraits <BoundReadFramebuffer> ::Type BoundReadFramebufferHandle;
class DrawFramebufferBindingParams : public FramebufferBindingParams
{
public:
typedef FramebufferBindingParams BaseType;
typedef DrawFramebufferBindingParams ThisType;
DrawFramebufferBindingParams(void)
: BaseType(GL_DRAW_FRAMEBUFFER)
{
;
}
};
class BoundDrawFramebuffer : public BoundFramebuffer
{
friend class Context;
public:
typedef BoundFramebuffer BaseType;
typedef BoundDrawFramebuffer ThisType;
BoundDrawFramebuffer(void)
: BaseType()
{
;
}
protected:
BoundDrawFramebuffer(const FramebufferHandle & handle, const DrawFramebufferBindingParams & params)
: BaseType(handle, params)
{
;
}
};
namespace detail { template <> struct ParamsOf <BoundDrawFramebuffer> { typedef DrawFramebufferBindingParams Type; }; };
namespace detail { template <> struct BaseOf <BoundDrawFramebuffer> { typedef BoundFramebuffer Type; }; };
namespace detail { template <> struct ObjectBase <BoundDrawFramebuffer> { typedef Framebuffer Type; }; };
typedef detail::ObjectSharedPointerTraits <BoundDrawFramebuffer> ::Type BoundDrawFramebufferHandle;
class ReadDrawFramebufferBindingParams : public FramebufferBindingParams
{
public:
typedef FramebufferBindingParams BaseType;
typedef ReadDrawFramebufferBindingParams ThisType;
ReadDrawFramebufferBindingParams(void)
: BaseType(GL_FRAMEBUFFER)
{
;
}
};
class BoundReadDrawFramebuffer : public BoundFramebuffer
{
friend class Context;
public:
typedef BoundFramebuffer BaseType;
typedef BoundReadDrawFramebuffer ThisType;
BoundReadDrawFramebuffer(void)
: BaseType()
{
;
}
bool readColorPixels(GLint index, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid * data)
{
return this->object()->readColorPixels(this->m_target, this->m_unit, index, x, y, width, height, format, type, data);
}
bool readDepthPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
{
return this->object()->readDepthPixels(this->m_target, this->m_unit, x, y, width, height, type, data);
}
bool readStencilPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
{
return this->object()->readStencilPixels(this->m_target, this->m_unit, x, y, width, height, type, data);
}
protected:
BoundReadDrawFramebuffer(const FramebufferHandle & handle, const ReadDrawFramebufferBindingParams & params)
: BaseType(handle, params)
{
;
}
};
namespace detail { template <> struct ParamsOf <BoundReadDrawFramebuffer> { typedef ReadDrawFramebufferBindingParams Type; }; };
namespace detail { template <> struct BaseOf <BoundReadDrawFramebuffer> { typedef BoundFramebuffer Type; }; };
namespace detail { template <> struct ObjectBase <BoundReadDrawFramebuffer> { typedef Framebuffer Type; }; };
typedef detail::ObjectSharedPointerTraits <BoundReadDrawFramebuffer> ::Type BoundReadDrawFramebufferHandle;
};
#endif // GLW_FRAMEBUFFER_H