+++ /dev/null
-#include "extension.h"
-#include "ext_framebuffer_blit.h"
-#include "ext_framebuffer_object.h"
-#include "framebuffer.h"
-#include "misc.h"
-#include "renderbuffer.h"
-#include "texture2d.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-Framebuffer::Framebuffer(unsigned i):
- id(i),
- dirty(0)
-{
- if(id)
- throw InvalidParameterValue("System framebuffer must have id 0");
-
- int viewport[4];
- glGetIntegerv(GL_VIEWPORT, viewport);
- width = viewport[2];
- height = viewport[3];
-}
-
-Framebuffer::Framebuffer():
- width(0),
- height(0),
- dirty(0)
-{
- static RequireExtension _ext("GL_EXT_framebuffer_object");
-
- glGenFramebuffersEXT(1, &id);
-}
-
-Framebuffer::~Framebuffer()
-{
- if(id)
- glDeleteFramebuffersEXT(1, &id);
- if(current()==this)
- unbind();
-}
-
-void Framebuffer::update_attachment(unsigned mask) const
-{
- if(current()==this)
- {
- GLenum color_buf = GL_NONE;
- for(unsigned i=0; i<attachments.size(); ++i)
- {
- const Attachment &attch = attachments[i];
- if(mask&(1<<i))
- {
- if(attch.type==GL_RENDERBUFFER_EXT)
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, attch.attachment, GL_RENDERBUFFER_EXT, attch.rbuf->get_id());
- else if(attch.type==GL_TEXTURE_2D)
- {
- static_cast<Texture2D *>(attch.tex)->allocate(attch.level);
- glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, attch.attachment, attch.type, attch.tex->get_id(), attch.level);
- }
- else
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, attch.attachment, 0, 0);
- }
-
- if(attch.attachment>=COLOR_ATTACHMENT0 && attch.attachment<=COLOR_ATTACHMENT3)
- color_buf = attch.attachment;
- }
-
- glDrawBuffer(color_buf);
- }
- else
- dirty |= mask;
-}
-
-void Framebuffer::check_size()
-{
- for(vector<Attachment>::iterator i=attachments.begin(); i!=attachments.end(); ++i)
- if(i->type)
- {
- if(i->type==GL_RENDERBUFFER_EXT)
- {
- width = i->rbuf->get_width();
- height = i->rbuf->get_height();
- }
- else if(i->type==GL_TEXTURE_2D)
- {
- Texture2D *tex = static_cast<Texture2D *>(i->tex);
- width = tex->get_width();
- height = tex->get_height();
- }
- if(current()==this)
- glViewport(0, 0, width, height);
- break;
- }
-}
-
-void Framebuffer::attach(FramebufferAttachment attch, Renderbuffer &rbuf)
-{
- if(!id)
- throw InvalidState("Can't attach to system framebuffer");
-
- unsigned i = get_attachment_index(attch);
- attachments[i].set(rbuf);
- update_attachment(1<<i);
- check_size();
-}
-
-void Framebuffer::attach(FramebufferAttachment attch, Texture2D &tex, unsigned level)
-{
- if(!id)
- throw InvalidState("Can't attach to system framebuffer");
-
- unsigned i = get_attachment_index(attch);
- attachments[i].set(tex, level);
- update_attachment(1<<i);
- check_size();
-}
-
-void Framebuffer::detach(FramebufferAttachment attch)
-{
- if(!id)
- throw InvalidState("Can't detach from system framebuffer");
-
- unsigned i = get_attachment_index(attch);
- attachments[i].clear();
- update_attachment(1<<i);
- check_size();
-}
-
-FramebufferStatus Framebuffer::check_status() const
-{
- Bind _bind(this, true);
- return static_cast<FramebufferStatus>(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT));
-}
-
-void Framebuffer::clear(BufferBits bits)
-{
- Bind _bind(this, true);
- glClear(bits);
-}
-
-void Framebuffer::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)
-{
- static RequireExtension _ext("GL_EXT_framebuffer_blit");
-
- const Framebuffer *old = current();
- if(set_current(this))
- {
- glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, id);
- if(dirty)
- {
- update_attachment(dirty);
- dirty = 0;
- }
- }
- if(old!=&other)
- glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, other.id);
-
- glBlitFramebufferEXT(sx0, sy0, sx1, sy1, dx0, dy0, dx1, dy1, bits, (filter ? GL_LINEAR : GL_NEAREST));
-
- set_current(old);
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, (old ? old->id : 0));
-}
-
-void Framebuffer::blit_from(const Framebuffer &other, int sx, int sy, unsigned wd, unsigned ht, int dx, int dy, BufferBits bits)
-{
- blit_from(other, sx, sy, sx+wd, sy+ht, dx, dy, dx+wd, dy+ht, bits, false);
-}
-
-void Framebuffer::blit_from(const Framebuffer &other, BufferBits bits, bool filter)
-{
- blit_from(other, 0, 0, other.width, other.height, 0, 0, width, height, bits, filter);
-}
-
-void Framebuffer::bind() const
-{
- if(set_current(this))
- {
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, id);
- if(dirty)
- {
- update_attachment(dirty);
- dirty = 0;
- }
- if(width && height)
- glViewport(0, 0, width, height);
- }
-}
-
-const Framebuffer *Framebuffer::current()
-{
- if(!cur_obj)
- cur_obj = &system();
- return cur_obj;
-}
-
-void Framebuffer::unbind()
-{
- system().bind();
-}
-
-Framebuffer &Framebuffer::system()
-{
- static Framebuffer sys_framebuf(0);
- return sys_framebuf;
-}
-
-unsigned Framebuffer::get_attachment_index(FramebufferAttachment attch)
-{
- for(unsigned i=0; i<attachments.size(); ++i)
- if(attachments[i].attachment==attch)
- return i;
- attachments.push_back(Attachment(attch));
- return attachments.size()-1;
-}
-
-
-Framebuffer::Attachment::Attachment(FramebufferAttachment a):
- attachment(a),
- type(0),
- level(0)
-{ }
-
-void Framebuffer::Attachment::set(Renderbuffer &r)
-{
- type = GL_RENDERBUFFER_EXT;
- rbuf = &r;
- level = 0;
-}
-
-void Framebuffer::Attachment::set(Texture &t, unsigned l)
-{
- type = t.get_target();
- tex = &t;
- level = l;
-}
-
-void Framebuffer::Attachment::clear()
-{
- type = 0;
-}
-
-} // namespace GL
-} // namespace Msp
projects / libs / gl.git / blobdiff