+++ /dev/null
-#ifndef MSP_GL_FRAMEBUFFER_H_
-#define MSP_GL_FRAMEBUFFER_H_
-
-#include <vector>
-#include "bindable.h"
-#include "gl.h"
-#include "texturecube.h"
-#include <msp/gl/extensions/ext_framebuffer_object.h>
-#include <msp/gl/extensions/msp_stereo_rendering.h>
-
-namespace Msp {
-namespace GL {
-
-class Renderbuffer;
-class Texture;
-class Texture2D;
-class Texture3D;
-
-enum FramebufferAttachment
-{
- COLOR_ATTACHMENT0 = GL_COLOR_ATTACHMENT0,
- COLOR_ATTACHMENT1 = GL_COLOR_ATTACHMENT1,
- COLOR_ATTACHMENT2 = GL_COLOR_ATTACHMENT2,
- COLOR_ATTACHMENT3 = GL_COLOR_ATTACHMENT3,
- DEPTH_ATTACHMENT = GL_DEPTH_ATTACHMENT,
- STENCIL_ATTACHMENT = GL_STENCIL_ATTACHMENT
-};
-
-enum FramebufferStatus
-{
- FRAMEBUFFER_INCOMPLETE_ATTACHMENT = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT,
- FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT,
- FRAMEBUFFER_INCOMPLETE_DIMENSIONS = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS,
- FRAMEBUFFER_INCOMPLETE_FORMATS = GL_FRAMEBUFFER_INCOMPLETE_FORMATS,
- FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER,
- FRAMEBUFFER_INCOMPLETE_READ_BUFFER = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER,
- FRAMEBUFFER_UNSUPPORTED = GL_FRAMEBUFFER_UNSUPPORTED,
- FRAMEBUFFER_COMPLETE = GL_FRAMEBUFFER_COMPLETE
-};
-
-enum BufferBits
-{
- COLOR_BUFFER_BIT = GL_COLOR_BUFFER_BIT,
- DEPTH_BUFFER_BIT = GL_DEPTH_BUFFER_BIT,
- STENCIL_BUFFER_BIT = GL_STENCIL_BUFFER_BIT
-};
-
-enum RWBuffer
-{
- NO_BUFFER = GL_NONE,
- FRONT_LEFT = GL_FRONT_LEFT,
- FRONT_RIGHT = GL_FRONT_RIGHT,
- BACK_LEFT = GL_BACK_LEFT,
- BACK_RIGHT = GL_BACK_RIGHT,
- FRONT = GL_FRONT,
- BACK = GL_BACK,
- LEFT = GL_LEFT,
- RIGHT = GL_RIGHT,
- FRONT_AND_BACK = GL_FRONT_AND_BACK
-};
-
-class framebuffer_incomplete: public std::runtime_error
-{
-public:
- framebuffer_incomplete(FramebufferStatus);
- virtual ~framebuffer_incomplete() throw() { }
-};
-
-/**
-Framebuffer objects can be used to perform offscreen rendering. The most
-common application is rendering to a texture, which can then be used for
-fullscreen shader effects.
-
-A framebuffer consist of a number of logical buffers, such as color and depth
-buffers. Renderbuffers and Textures can be attached to the logical buffers. At
-least one image must be attached for the framebuffer to be usable.
-
-Requires the GL_EXT_framebuffer_object extension. The blit functions require
-the GL_EXT_framebuffer_blit extension.
-*/
-class Framebuffer: public Bindable<Framebuffer>
-{
-private:
- struct Attachment
- {
- FramebufferAttachment attachment;
- GLenum type;
- union
- {
- Renderbuffer *rbuf;
- Texture *tex;
- };
- unsigned level;
- unsigned layer;
-
- Attachment(FramebufferAttachment);
- void set(Renderbuffer &);
- void set(Texture &, unsigned, unsigned);
- void clear();
- };
-
- struct Viewport
- {
- int left;
- int bottom;
- unsigned width;
- unsigned height;
-
- Viewport();
- };
-
- unsigned id;
- std::vector<Attachment> attachments;
- unsigned width;
- unsigned height;
- Viewport view;
- mutable unsigned dirty;
-
- Framebuffer(unsigned);
-public:
- Framebuffer();
- ~Framebuffer();
-
- unsigned get_width() const { return width; }
- unsigned get_height() const { return height; }
-
-private:
- void update_attachment(unsigned) const;
- void check_size();
- unsigned get_attachment_index(FramebufferAttachment);
-public:
- void attach(FramebufferAttachment attch, Renderbuffer &rbuf);
- void attach(FramebufferAttachment attch, Texture2D &tex, unsigned level = 0);
- void attach(FramebufferAttachment attch, Texture3D &tex, unsigned layer, unsigned level = 0);
- void attach(FramebufferAttachment attch, TextureCube &tex, TextureCubeFace face, unsigned level = 0);
- void detach(FramebufferAttachment attch);
-
- /** Checks the completeness of the framebuffer. Returns
- FRAMEBUFFER_COMPLETE if the framebuffer is complete and can be rendered to,
- or one of the error status codes otherwise. */
- FramebufferStatus check_status() const;
-
- /** Ensures that the framebuffer is complete, throwing an exception if it
- isn't. */
- void require_complete() const;
-
- void viewport(int, int, unsigned, unsigned);
- void reset_viewport();
-
- void clear(BufferBits);
-
- /** Blits a region from another framebuffer into this one. If the source
- and destination regions have different dimensions, the contents will be
- stretched. If filter is true, linear interpolation will be used, otherwise
- no interpolation is done. */
- void blit_from(const Framebuffer &other, int sx0, int sy0, int sx1, int sy1,
- int dx0, int dy0, int dx1, int dy1, BufferBits bits, bool filter);
-
- /** Blits a region from another framebuffer into this one, retaining its
- dimensions. */
- void blit_from(const Framebuffer & other, int sx, int sy,
- unsigned wd, unsigned ht, int dx, int dy, BufferBits bits);
-
- /** Blits the entire contents of another framebuffer into this one. */
- void blit_from(const Framebuffer &other, BufferBits bits, bool filter);
-
- void bind() const;
-
- static const Framebuffer *current();
- static void unbind();
-
- static Framebuffer &system();
-};
-
-inline BufferBits operator|(BufferBits a, BufferBits b)
-{ return static_cast<BufferBits>(static_cast<int>(a)|static_cast<int>(b)); }
-
-} // namespace GL
-} // namespace Msp
-
-#endif
projects / libs / gl.git / blobdiff