X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fframebuffer.cpp;h=01a4107494387cac61ce8c46e90dd7234e07d5b4;hb=d6122b75b00c0889a54536b5cea971d08184af8f;hp=97b5c8b1394e428bcc640339af98d58a68607462;hpb=2e09b4f72f06537431151fe8b2574e1aa886ad48;p=libs%2Fgl.git

diff --git a/source/core/framebuffer.cpp b/source/core/framebuffer.cpp
index 97b5c8b1..01a41074 100644
--- a/source/core/framebuffer.cpp
+++ b/source/core/framebuffer.cpp
@@ -1,10 +1,13 @@
 #include <msp/gl/extensions/arb_draw_buffers.h>
 #include <msp/gl/extensions/arb_direct_state_access.h>
+#include <msp/gl/extensions/arb_internalformat_query.h>
+#include <msp/gl/extensions/arb_internalformat_query2.h>
 #include <msp/gl/extensions/ext_framebuffer_object.h>
 #include <msp/gl/extensions/ext_texture_array.h>
 #include <msp/gl/extensions/ext_texture3d.h>
 #include <msp/gl/extensions/msp_buffer_control.h>
 #include <msp/gl/extensions/khr_debug.h>
+#include <msp/strings/format.h>
 #include "error.h"
 #include "framebuffer.h"
 #include "misc.h"
@@ -18,59 +21,37 @@ 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_INCOMPLETE_MULTISAMPLE:
-		conv.result("mismatched attachment sample counts");
-		break;
-	case FRAMEBUFFER_INCOMPLETE_LAYER_COUNT:
-		conv.result("mismatched attachment layer counts");
-		break;
-	case FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS:
-		conv.result("mismatched attachment layering");
-		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_incomplete::framebuffer_incomplete(const std::string &reason):
+	runtime_error(reason)
 { }
 
 
 Framebuffer::Framebuffer(unsigned i):
 	id(i),
-	status(FRAMEBUFFER_COMPLETE),
+	status(GL_FRAMEBUFFER_COMPLETE),
 	dirty(0)
 {
 	if(id)
 		throw invalid_argument("System framebuffer must have id 0");
 
+	if(EXT_framebuffer_object)
+	{
+		int value;
+		glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_BACK, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
+		if(value==GL_NONE)
+			glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_FRONT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
+		if(value!=GL_NONE)
+			format = (format,COLOR_ATTACHMENT);
+
+		glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_DEPTH, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
+		if(value!=GL_NONE)
+			format = (format,DEPTH_ATTACHMENT);
+
+		glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_STENCIL, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &value);
+		if(value!=GL_NONE)
+			format = (format,STENCIL_ATTACHMENT);
+	}
+
 	int view[4];
 	glGetIntegerv(GL_VIEWPORT, view);
 	width = view[2];
@@ -100,7 +81,7 @@ void Framebuffer::init()
 
 	width = 0;
 	height = 0;
-	status = FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
+	status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
 	dirty = 0;
 
 	if(ARB_direct_state_access)
@@ -117,11 +98,24 @@ Framebuffer::~Framebuffer()
 
 void Framebuffer::set_format(const FrameFormat &fmt)
 {
-	if(!format.empty())
+	if(!format.empty() || !id)
 		throw invalid_operation("Framebuffer::set_format");
 	if(fmt.empty())
 		throw invalid_argument("Framebuffer::set_format");
 
+	if(ARB_internalformat_query && ARB_internalformat_query2)
+	{
+		unsigned target = (fmt.get_samples()>1 ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D);
+		for(FrameAttachment a: fmt)
+		{
+			unsigned pf = get_gl_pixelformat(get_attachment_pixelformat(a));
+			int supported = 0;
+			glGetInternalformativ(target, pf, GL_FRAMEBUFFER_RENDERABLE, 1, &supported);
+			if(supported!=GL_FULL_SUPPORT)
+				throw invalid_argument("Framebuffer::set_format");
+		}
+	}
+
 	format = fmt;
 	attachments.resize(format.size());
 }
@@ -192,9 +186,9 @@ void Framebuffer::update() const
 	}
 
 	if(ARB_direct_state_access)
-		status = static_cast<FramebufferStatus>(glCheckNamedFramebufferStatus(id, GL_FRAMEBUFFER));
+		status = glCheckNamedFramebufferStatus(id, GL_FRAMEBUFFER);
 	else
-		status = static_cast<FramebufferStatus>(glCheckFramebufferStatus(GL_FRAMEBUFFER));
+		status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
 
 	dirty = 0;
 }
@@ -326,8 +320,24 @@ void Framebuffer::resize(const WindowView &view)
 
 void Framebuffer::require_complete() const
 {
-	if(status!=FRAMEBUFFER_COMPLETE)
-		throw framebuffer_incomplete(status);
+	if(!id)
+		return;
+
+	bool layered = (!attachments.empty() && attachments.front().layer<0);
+	for(const Attachment &a: attachments)
+	{
+		if(!a.tex)
+			throw framebuffer_incomplete("missing attachment");
+		if(layered!=(a.layer<0))
+			throw framebuffer_incomplete("inconsistent layering");
+	}
+
+	if(status==GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT)
+		throw framebuffer_incomplete("incomplete or unsupported attachment");
+	if(status==GL_FRAMEBUFFER_UNSUPPORTED)
+		throw framebuffer_incomplete("unsupported configuration");
+	if(status!=GL_FRAMEBUFFER_COMPLETE)
+		throw framebuffer_incomplete(Msp::format("incomplete (%#x)", status));
 }
 
 void Framebuffer::set_debug_name(const string &name)