X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Fframebuffer_backend.cpp;h=8ba947dfe1eb0528e91521fa3d853ec04a74e082;hp=18566ac3c2553fd82ea1dd71ab735dc0f3cd3168;hb=94cadd1618f93239b1cb0acbd4f958257c035c98;hpb=d01902f355b1ea9a038a7f96cab37e49c6b65419

diff --git a/source/backends/opengl/framebuffer_backend.cpp b/source/backends/opengl/framebuffer_backend.cpp
index 18566ac3..8ba947df 100644
--- a/source/backends/opengl/framebuffer_backend.cpp
+++ b/source/backends/opengl/framebuffer_backend.cpp
@@ -43,6 +43,8 @@ OpenGLFramebuffer::~OpenGLFramebuffer()
 {
 	if(id)
 		glDeleteFramebuffers(1, &id);
+	if(resolve_id)
+		glDeleteFramebuffers(1, &resolve_id);
 }
 
 void OpenGLFramebuffer::set_system_format(const FrameFormat &fmt)
@@ -69,6 +71,17 @@ bool OpenGLFramebuffer::is_format_supported(const FrameFormat &fmt)
 	return true;
 }
 
+void OpenGLFramebuffer::format_changed(const FrameFormat &format)
+{
+	if(format.get_samples()>1 && !resolve_id)
+	{
+		if(ARB_direct_state_access)
+			glCreateFramebuffers(1, &resolve_id);
+		else
+			glGenFramebuffers(1, &resolve_id);
+	}
+}
+
 void OpenGLFramebuffer::require_layered()
 {
 	static Require _req(ARB_geometry_shader4);
@@ -85,6 +98,25 @@ void OpenGLFramebuffer::update(unsigned mask) const
 {
 	const Framebuffer &self = *static_cast<const Framebuffer *>(this);
 
+	update(mask, false);
+	if(self.has_resolve_attachments())
+	{
+		if(!ARB_direct_state_access)
+			glBindFramebuffer(GL_DRAW_FRAMEBUFFER, resolve_id);
+
+		update(mask, true);
+
+		if(!ARB_direct_state_access)
+			glBindFramebuffer(GL_DRAW_FRAMEBUFFER, id);
+	}
+}
+
+void OpenGLFramebuffer::update(unsigned mask, bool resolve) const
+{
+	const Framebuffer &self = *static_cast<const Framebuffer *>(this);
+	unsigned obj_id = (resolve ? resolve_id : id);
+	Texture *Framebuffer::Attachment::*member = (resolve ? &Framebuffer::Attachment::resolve : &Framebuffer::Attachment::tex);
+
 	vector<GLenum> color_bufs;
 	color_bufs.reserve(self.format.size());
 	unsigned i = 0;
@@ -94,28 +126,29 @@ void OpenGLFramebuffer::update(unsigned mask) const
 		if(mask&(1<<i))
 		{
 			const Framebuffer::Attachment &attch = self.attachments[i];
-			if(attch.tex)
+			Texture *tex = attch.*member;
+			if(tex)
 			{
 				if(ARB_direct_state_access)
 				{
-					if(attch.tex->target==GL_TEXTURE_2D || attch.tex->target==GL_TEXTURE_2D_MULTISAMPLE || attch.layer<0)
-						glNamedFramebufferTexture(id, gl_attach_point, attch.tex->id, attch.level);
+					if(tex->target==GL_TEXTURE_2D || tex->target==GL_TEXTURE_2D_MULTISAMPLE || attch.layer<0)
+						glNamedFramebufferTexture(obj_id, gl_attach_point, tex->id, attch.level);
 					else
-						glNamedFramebufferTextureLayer(id, gl_attach_point, attch.tex->id, attch.level, attch.layer);
+						glNamedFramebufferTextureLayer(obj_id, gl_attach_point, tex->id, attch.level, attch.layer);
 				}
-				else if(attch.tex->target==GL_TEXTURE_2D || attch.tex->target==GL_TEXTURE_2D_MULTISAMPLE)
-					glFramebufferTexture2D(GL_FRAMEBUFFER, gl_attach_point, attch.tex->target, attch.tex->id, attch.level);
+				else if(tex->target==GL_TEXTURE_2D || tex->target==GL_TEXTURE_2D_MULTISAMPLE)
+					glFramebufferTexture2D(GL_FRAMEBUFFER, gl_attach_point, tex->target, tex->id, attch.level);
 				else if(attch.layer<0)
-					glFramebufferTexture(GL_FRAMEBUFFER, gl_attach_point, attch.tex->id, attch.level);
-				else if(attch.tex->target==GL_TEXTURE_2D_ARRAY)
-					glFramebufferTextureLayer(GL_FRAMEBUFFER, gl_attach_point, attch.tex->id, attch.level, attch.layer);
-				else if(attch.tex->target==GL_TEXTURE_3D)
-					glFramebufferTexture3D(GL_FRAMEBUFFER, gl_attach_point, attch.tex->target, attch.tex->id, attch.level, attch.layer);
-				else if(attch.tex->target==GL_TEXTURE_CUBE_MAP)
-					glFramebufferTexture2D(GL_FRAMEBUFFER, gl_attach_point, get_gl_cube_face(static_cast<TextureCubeFace>(attch.layer)), attch.tex->id, attch.level);
+					glFramebufferTexture(GL_FRAMEBUFFER, gl_attach_point, tex->id, attch.level);
+				else if(tex->target==GL_TEXTURE_2D_ARRAY)
+					glFramebufferTextureLayer(GL_FRAMEBUFFER, gl_attach_point, tex->id, attch.level, attch.layer);
+				else if(tex->target==GL_TEXTURE_3D)
+					glFramebufferTexture3D(GL_FRAMEBUFFER, gl_attach_point, tex->target, tex->id, attch.level, attch.layer);
+				else if(tex->target==GL_TEXTURE_CUBE_MAP)
+					glFramebufferTexture2D(GL_FRAMEBUFFER, gl_attach_point, get_gl_cube_face(static_cast<TextureCubeFace>(attch.layer)), tex->id, attch.level);
 			}
 			else if(ARB_direct_state_access)
-				glNamedFramebufferTexture(id, gl_attach_point, 0, 0);
+				glNamedFramebufferTexture(obj_id, gl_attach_point, 0, 0);
 			else
 				glFramebufferTexture2D(GL_FRAMEBUFFER, gl_attach_point, GL_TEXTURE_2D, 0, 0);
 		}
@@ -134,8 +167,8 @@ void OpenGLFramebuffer::update(unsigned mask) const
 	{
 		/* 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);
+		glNamedFramebufferDrawBuffers(obj_id, color_bufs.size(), &color_bufs[0]);
+		glNamedFramebufferReadBuffer(obj_id, first_buffer);
 	}
 	else
 	{
@@ -148,10 +181,13 @@ void OpenGLFramebuffer::update(unsigned mask) const
 			glReadBuffer(first_buffer);
 	}
 
-	if(ARB_direct_state_access)
-		status = glCheckNamedFramebufferStatus(id, GL_FRAMEBUFFER);
-	else
-		status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+	if(!resolve)
+	{
+		if(ARB_direct_state_access)
+			status = glCheckNamedFramebufferStatus(obj_id, GL_FRAMEBUFFER);
+		else
+			status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+	}
 }
 
 void OpenGLFramebuffer::require_complete() const
@@ -168,7 +204,14 @@ void OpenGLFramebuffer::set_debug_name(const string &name)
 {
 #ifdef DEBUG
 	if(KHR_debug)
+	{
 		glObjectLabel(GL_FRAMEBUFFER, id, name.size(), name.c_str());
+		if(resolve_id)
+		{
+			string resolve_name = name+" [resolve]";
+			glObjectLabel(GL_FRAMEBUFFER, resolve_id, resolve_name.size(), resolve_name.c_str());
+		}
+	}
 #else
 	(void)name;
 #endif