X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fframebuffer.cpp;h=cf478ce29b686d842ce2074078952633b2e47b02;hp=638a710f464431cd7a708434e1fa980157d9b009;hb=HEAD;hpb=08e19bc2b4eba572bc7699378cf55cd8772ac67e

diff --git a/source/framebuffer.cpp b/source/framebuffer.cpp
deleted file mode 100644
index 638a710f..00000000
--- a/source/framebuffer.cpp
+++ /dev/null
@@ -1,389 +0,0 @@
-#include <msp/gl/extensions/arb_draw_buffers.h>
-#include <msp/gl/extensions/arb_direct_state_access.h>
-#include <msp/gl/extensions/ext_framebuffer_blit.h>
-#include <msp/gl/extensions/ext_framebuffer_object.h>
-#include <msp/gl/extensions/msp_draw_buffer.h>
-#include "error.h"
-#include "framebuffer.h"
-#include "misc.h"
-#include "renderbuffer.h"
-#include "texture2d.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-void operator<<(LexicalConverter &conv, FramebufferStatus status)
-{
-	switch(status)
-	{
-	case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
-		conv.result("incomplete attachment");
-		break;
-	case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
-		conv.result("missing attachment");
-		break;
-	case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
-		conv.result("mismatched attachment dimensions");
-		break;
-	case FRAMEBUFFER_INCOMPLETE_FORMATS:
-		conv.result("mismatched attachment formats");
-		break;
-	case FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
-		conv.result("missing draw buffer attachment");
-		break;
-	case FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
-		conv.result("missing read buffer attachment");
-		break;
-	case FRAMEBUFFER_UNSUPPORTED:
-		conv.result("unsupported");
-		break;
-	default:
-		conv.result(lexical_cast<string, unsigned>(status, "%#x"));
-		break;
-	}
-}
-
-framebuffer_incomplete::framebuffer_incomplete(FramebufferStatus status):
-	runtime_error(lexical_cast<string>(status))
-{ }
-
-
-Framebuffer::Framebuffer(unsigned i):
-	id(i),
-	dirty(0)
-{
-	if(id)
-		throw invalid_argument("System framebuffer must have id 0");
-
-	glGetIntegerv(GL_VIEWPORT, &view.left);
-	width = view.width;
-	height = view.height;
-}
-
-Framebuffer::Framebuffer():
-	width(0),
-	height(0),
-	dirty(0)
-{
-	static Require _req(EXT_framebuffer_object);
-
-	if(ARB_direct_state_access)
-		glCreateFramebuffers(1, &id);
-	else
-		glGenFramebuffers(1, &id);
-}
-
-Framebuffer::~Framebuffer()
-{
-	if(id)
-		glDeleteFramebuffers(1, &id);
-	if(current()==this)
-		unbind();
-}
-
-void Framebuffer::update_attachment(unsigned mask) const
-{
-	if(!ARB_direct_state_access && current()!=this)
-	{
-		dirty |= mask;
-		return;
-	}
-
-	std::vector<GLenum> color_bufs;
-	color_bufs.reserve(attachments.size());
-	for(unsigned i=0; i<attachments.size(); ++i)
-	{
-		const Attachment &attch = attachments[i];
-		if(mask&(1<<i))
-		{
-			if(attch.type==GL_RENDERBUFFER)
-			{
-				if(ARB_direct_state_access)
-					glNamedFramebufferRenderbuffer(id, attch.attachment, GL_RENDERBUFFER, attch.rbuf->get_id());
-				else
-					glFramebufferRenderbuffer(GL_FRAMEBUFFER, attch.attachment, GL_RENDERBUFFER, attch.rbuf->get_id());
-			}
-			else if(attch.type==GL_TEXTURE_2D)
-			{
-				static_cast<Texture2D *>(attch.tex)->allocate(attch.level);
-				if(ARB_direct_state_access)
-					glNamedFramebufferTexture(id, attch.attachment, attch.tex->get_id(), attch.level);
-				else
-					glFramebufferTexture2D(GL_FRAMEBUFFER, attch.attachment, attch.type, attch.tex->get_id(), attch.level);
-			}
-			else if(attch.type==GL_TEXTURE_CUBE_MAP)
-			{
-				static_cast<TextureCube *>(attch.tex)->allocate(attch.level);
-				if(ARB_direct_state_access)
-					glNamedFramebufferTextureLayer(id, attch.attachment, attch.tex->get_id(), attch.level, attch.layer);
-				else
-					glFramebufferTexture2D(GL_FRAMEBUFFER, attch.attachment, TextureCube::enumerate_faces(attch.layer), attch.tex->get_id(), attch.level);
-			}
-			else if(ARB_direct_state_access)
-				glNamedFramebufferRenderbuffer(id, attch.attachment, 0, 0);
-			else
-				glFramebufferRenderbuffer(GL_FRAMEBUFFER, attch.attachment, 0, 0);
-		}
-
-		if(attch.attachment>=COLOR_ATTACHMENT0 && attch.attachment<=COLOR_ATTACHMENT3)
-			color_bufs.push_back(attch.attachment);
-	}
-
-	if(color_bufs.size()>1)
-		static Require _req(ARB_draw_buffers);
-
-	GLenum first_buffer = (color_bufs.empty() ? GL_NONE : color_bufs.front());
-	if(ARB_direct_state_access)
-	{
-		/* ARB_direct_state_access ties the availability of these functions to
-		framebuffers themselves, so no further checks are needed. */
-		glNamedFramebufferDrawBuffers(id, color_bufs.size(), &color_bufs[0]);
-		glNamedFramebufferReadBuffer(id, first_buffer);
-	}
-	else
-	{
-		if(ARB_draw_buffers)
-			glDrawBuffers(color_bufs.size(), &color_bufs[0]);
-		else if(MSP_draw_buffer)
-			glDrawBuffer(first_buffer);
-
-		if(MSP_draw_buffer)
-			glReadBuffer(first_buffer);
-	}
-}
-
-void Framebuffer::check_size()
-{
-	bool full_viewport = (view.left==0 && view.bottom==0 && view.width==width && view.height==height);
-	for(vector<Attachment>::iterator i=attachments.begin(); i!=attachments.end(); ++i)
-		if(i->type)
-		{
-			if(i->type==GL_RENDERBUFFER)
-			{
-				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();
-			}
-			else if(i->type==GL_TEXTURE_CUBE_MAP)
-			{
-				width = static_cast<TextureCube *>(i->tex)->get_size();
-				height = width;
-			}
-			if(full_viewport)
-				reset_viewport();
-			break;
-		}
-}
-
-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;
-}
-
-void Framebuffer::attach(FramebufferAttachment attch, Renderbuffer &rbuf)
-{
-	if(!id)
-		throw invalid_operation("Framebuffer::attach");
-
-	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 invalid_operation("Framebuffer::attach");
-
-	unsigned i = get_attachment_index(attch);
-	attachments[i].set(tex, level, 0);
-	update_attachment(1<<i);
-	check_size();
-}
-
-void Framebuffer::attach(FramebufferAttachment attch, TextureCube &tex, TextureCubeFace face, unsigned level)
-{
-	if(!id)
-		throw invalid_operation("Framebuffer::attach");
-
-	unsigned i = get_attachment_index(attch);
-	attachments[i].set(tex, level, TextureCube::get_face_index(face));
-	update_attachment(1<<i);
-	check_size();
-}
-
-void Framebuffer::detach(FramebufferAttachment attch)
-{
-	if(!id)
-		throw invalid_operation("Framebuffer::detach");
-
-	unsigned i = get_attachment_index(attch);
-	attachments[i].clear();
-	update_attachment(1<<i);
-	check_size();
-}
-
-FramebufferStatus Framebuffer::check_status() const
-{
-	if(ARB_direct_state_access)
-		return static_cast<FramebufferStatus>(glCheckNamedFramebufferStatus(id, GL_FRAMEBUFFER));
-	else
-	{
-		BindRestore _bind(this);
-		return static_cast<FramebufferStatus>(glCheckFramebufferStatus(GL_FRAMEBUFFER));
-	}
-}
-
-void Framebuffer::require_complete() const
-{
-	FramebufferStatus status = check_status();
-	if(status!=FRAMEBUFFER_COMPLETE)
-		throw framebuffer_incomplete(status);
-}
-
-void Framebuffer::viewport(int l, int b, unsigned w, unsigned h)
-{
-	view.left = l;
-	view.bottom = b;
-	view.width = w;
-	view.height = h;
-
-	if(current()==this)
-		glViewport(view.left, view.bottom, view.width, view.height);
-}
-
-void Framebuffer::reset_viewport()
-{
-	viewport(0, 0, width, height);
-}
-
-void Framebuffer::clear(BufferBits bits)
-{
-	BindRestore _bind(this);
-	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 Require _req(EXT_framebuffer_blit);
-
-	if(ARB_direct_state_access)
-	{
-		glBlitNamedFramebuffer(other.id, id, sx0, sy0, sx1, sy1, dx0, dy0, dx1, dy1, bits, (filter ? GL_LINEAR : GL_NEAREST));
-		return;
-	}
-
-	const Framebuffer *old = current();
-	if(set_current(this))
-	{
-		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, id);
-		if(dirty)
-		{
-			update_attachment(dirty);
-			dirty = 0;
-		}
-	}
-	if(old!=&other)
-		glBindFramebuffer(GL_READ_FRAMEBUFFER, other.id);
-
-	glBlitFramebuffer(sx0, sy0, sx1, sy1, dx0, dy0, dx1, dy1, bits, (filter ? GL_LINEAR : GL_NEAREST));
-
-	set_current(old);
-	glBindFramebuffer(GL_FRAMEBUFFER, (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))
-	{
-		glBindFramebuffer(GL_FRAMEBUFFER, id);
-		if(dirty)
-		{
-			update_attachment(dirty);
-			dirty = 0;
-		}
-
-		if(width && height)
-			glViewport(view.left, view.bottom, view.width, view.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;
-}
-
-
-Framebuffer::Attachment::Attachment(FramebufferAttachment a):
-	attachment(a),
-	type(0),
-	level(0),
-	layer(0)
-{ }
-
-void Framebuffer::Attachment::set(Renderbuffer &r)
-{
-	type = GL_RENDERBUFFER;
-	rbuf = &r;
-	level = 0;
-	layer = 0;
-}
-
-void Framebuffer::Attachment::set(Texture &t, unsigned l, unsigned z)
-{
-	type = t.get_target();
-	tex = &t;
-	level = l;
-	layer = z;
-}
-
-void Framebuffer::Attachment::clear()
-{
-	type = 0;
-}
-
-
-Framebuffer::Viewport::Viewport():
-	left(0),
-	bottom(0),
-	width(0),
-	height(0)
-{ }
-
-} // namespace GL
-} // namespace Msp