1 files changed, 643 insertions, 0 deletions
diff --git a/src/hgl/GLView.cpp b/src/hgl/GLView.cpp
new file mode 100644
index 00000000000..9ae5b5c83ac
--- /dev/null
+++ b/src/hgl/GLView.cpp
@@ -0,0 +1,643 @@
+/*
+ * Copyright 2006-2012, Haiku. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Jérôme Duval, korli@users.berlios.de
+ *		Philippe Houdoin, philippe.houdoin@free.fr
+ *		Stefano Ceccherini, burton666@libero.it
+ */
+
+#include <kernel/image.h>
+
+#include <GLView.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <DirectWindow.h>
+#include <GLRenderer.h>
+
+#include "interface/DirectWindowPrivate.h"
+#include "GLDispatcher.h"
+#include "GLRendererRoster.h"
+
+
+struct glview_direct_info {
+	direct_buffer_info* direct_info;
+	bool direct_connected;
+	bool enable_direct_mode;
+
+	glview_direct_info();
+	~glview_direct_info();
+};
+
+
+BGLView::BGLView(BRect rect, const char* name, ulong resizingMode, ulong mode,
+	ulong options)
+	:
+	BView(rect, name, B_FOLLOW_ALL_SIDES, mode | B_WILL_DRAW | B_FRAME_EVENTS),
+		//  | B_FULL_UPDATE_ON_RESIZE)
+	fGc(NULL),
+	fOptions(options),
+	fDitherCount(0),
+	fDrawLock("BGLView draw lock"),
+	fDisplayLock("BGLView display lock"),
+	fClipInfo(NULL),
+	fRenderer(NULL),
+	fRoster(NULL),
+	fDitherMap(NULL)
+{
+	fRoster = new GLRendererRoster(this, options);
+}
+
+
+BGLView::~BGLView()
+{
+	delete fClipInfo;
+	if (fRenderer)
+		fRenderer->Release();
+}
+
+
+void
+BGLView::LockGL()
+{
+	// TODO: acquire the OpenGL API lock it on this glview
+
+	fDisplayLock.Lock();
+	if (fRenderer)
+		fRenderer->LockGL();
+}
+
+
+void
+BGLView::UnlockGL()
+{
+	if (fRenderer)
+		fRenderer->UnlockGL();
+	fDisplayLock.Unlock();
+
+	// TODO: release the GL API lock to others glviews
+}
+
+
+void
+BGLView::SwapBuffers()
+{
+	SwapBuffers(false);
+}
+
+
+void
+BGLView::SwapBuffers(bool vSync)
+{
+	if (fRenderer) {
+		_LockDraw();
+		fRenderer->SwapBuffers(vSync);
+		_UnlockDraw();
+	}
+}
+
+
+BView*
+BGLView::EmbeddedView()
+{
+	return NULL;
+}
+
+
+void*
+BGLView::GetGLProcAddress(const char* procName)
+{
+	BGLDispatcher* glDispatcher = NULL;
+
+	if (fRenderer)
+		glDispatcher = fRenderer->GLDispatcher();
+
+	if (glDispatcher)
+		return (void*)glDispatcher->AddressOf(procName);
+
+	return NULL;
+}
+
+
+status_t
+BGLView::CopyPixelsOut(BPoint source, BBitmap* dest)
+{
+	if (!fRenderer)
+		return B_ERROR;
+
+	if (!dest || !dest->Bounds().IsValid())
+		return B_BAD_VALUE;
+
+	return fRenderer->CopyPixelsOut(source, dest);
+}
+
+
+status_t
+BGLView::CopyPixelsIn(BBitmap* source, BPoint dest)
+{
+	if (!fRenderer)
+		return B_ERROR;
+
+	if (!source || !source->Bounds().IsValid())
+		return B_BAD_VALUE;
+
+	return fRenderer->CopyPixelsIn(source, dest);
+}
+
+
+/*!	Mesa's GLenum is not ulong but uint, so we can't use GLenum
+	without breaking this method signature.
+	Instead, we have to use the effective BeOS's SGI OpenGL GLenum type:
+	unsigned long.
+ */
+void
+BGLView::ErrorCallback(unsigned long errorCode)
+{
+	char msg[32];
+	sprintf(msg, "GL: Error code $%04lx.", errorCode);
+	// TODO: under BeOS R5, it call debugger(msg);
+	fprintf(stderr, "%s\n", msg);
+}
+
+
+void
+BGLView::Draw(BRect updateRect)
+{
+	if (fRenderer) {
+		_LockDraw();
+		fRenderer->Draw(updateRect);
+		_UnlockDraw();
+		return;
+	}
+	// TODO: auto-size and center the string
+	MovePenTo(8, 32);
+	DrawString("No OpenGL renderer available!");
+}
+
+
+void
+BGLView::AttachedToWindow()
+{
+	BView::AttachedToWindow();
+
+	fBounds = Bounds();
+	for (BView* view = this; view != NULL; view = view->Parent())
+		view->ConvertToParent(&fBounds);
+
+	fRenderer = fRoster->GetRenderer();
+	if (fRenderer != NULL) {
+		// Jackburton: The following code was commented because it doesn't look
+		// good in "direct" mode:
+		// when the window is moved, the app_server doesn't paint the view's
+		// background, and the stuff behind the window itself shows up.
+		// Setting the view color to black, instead, looks a bit more elegant.
+#if 0
+		// Don't paint white window background when resized
+		SetViewColor(B_TRANSPARENT_32_BIT);
+#else
+		SetViewColor(0, 0, 0);
+#endif
+
+		// Set default OpenGL viewport:
+		LockGL();
+		glViewport(0, 0, Bounds().IntegerWidth(), Bounds().IntegerHeight());
+		UnlockGL();
+		fRenderer->FrameResized(Bounds().IntegerWidth(),
+			Bounds().IntegerHeight());
+
+		if (fClipInfo) {
+			fRenderer->DirectConnected(fClipInfo->direct_info);
+			fRenderer->EnableDirectMode(fClipInfo->enable_direct_mode);
+		}
+
+		return;
+	}
+
+	fprintf(stderr, "no renderer found! \n");
+
+	// No Renderer, no rendering. Setup a minimal "No Renderer" string drawing
+	// context
+	SetFont(be_bold_font);
+	// SetFontSize(16);
+}
+
+
+void
+BGLView::AllAttached()
+{
+	BView::AllAttached();
+}
+
+
+void
+BGLView::DetachedFromWindow()
+{
+	if (fRenderer)
+		fRenderer->Release();
+	fRenderer = NULL;
+
+	BView::DetachedFromWindow();
+}
+
+
+void
+BGLView::AllDetached()
+{
+	BView::AllDetached();
+}
+
+
+void
+BGLView::FrameResized(float width, float height)
+{
+	fBounds = Bounds();
+	for (BView* v = this; v; v = v->Parent())
+		v->ConvertToParent(&fBounds);
+
+	if (fRenderer) {
+		LockGL();
+		_LockDraw();
+		_CallDirectConnected();
+		fRenderer->FrameResized(width, height);
+		_UnlockDraw();
+		UnlockGL();
+	}
+
+	BView::FrameResized(width, height);
+}
+
+
+status_t
+BGLView::Perform(perform_code d, void* arg)
+{
+	return BView::Perform(d, arg);
+}
+
+
+status_t
+BGLView::Archive(BMessage* data, bool deep) const
+{
+	return BView::Archive(data, deep);
+}
+
+
+void
+BGLView::MessageReceived(BMessage* msg)
+{
+	BView::MessageReceived(msg);
+}
+
+
+void
+BGLView::SetResizingMode(uint32 mode)
+{
+	BView::SetResizingMode(mode);
+}
+
+
+void
+BGLView::GetPreferredSize(float* _width, float* _height)
+{
+	if (_width)
+		*_width = 0;
+	if (_height)
+		*_height = 0;
+}
+
+
+void
+BGLView::Show()
+{
+	BView::Show();
+}
+
+
+void
+BGLView::Hide()
+{
+	BView::Hide();
+}
+
+
+BHandler*
+BGLView::ResolveSpecifier(BMessage* msg, int32 index, BMessage* specifier,
+	int32 form, const char* property)
+{
+	return BView::ResolveSpecifier(msg, index, specifier, form, property);
+}
+
+
+status_t
+BGLView::GetSupportedSuites(BMessage* data)
+{
+	return BView::GetSupportedSuites(data);
+}
+
+
+void
+BGLView::DirectConnected(direct_buffer_info* info)
+{
+	if (fClipInfo == NULL) {
+		fClipInfo = new (std::nothrow) glview_direct_info();
+		if (fClipInfo == NULL)
+			return;
+	}
+
+	direct_buffer_info* localInfo = fClipInfo->direct_info;
+
+	switch (info->buffer_state & B_DIRECT_MODE_MASK) {
+		case B_DIRECT_START:
+			fClipInfo->direct_connected = true;
+			memcpy(localInfo, info, DIRECT_BUFFER_INFO_AREA_SIZE);
+			_UnlockDraw();
+			break;
+
+		case B_DIRECT_MODIFY:
+			_LockDraw();
+			memcpy(localInfo, info, DIRECT_BUFFER_INFO_AREA_SIZE);
+			_UnlockDraw();
+			break;
+
+		case B_DIRECT_STOP:
+			fClipInfo->direct_connected = false;
+			_LockDraw();
+			break;
+	}
+
+	if (fRenderer)
+		_CallDirectConnected();
+}
+
+
+void
+BGLView::EnableDirectMode(bool enabled)
+{
+	if (fRenderer)
+		fRenderer->EnableDirectMode(enabled);
+	if (fClipInfo == NULL) {
+		fClipInfo = new (std::nothrow) glview_direct_info();
+		if (fClipInfo == NULL)
+			return;
+	}
+
+	fClipInfo->enable_direct_mode = enabled;
+}
+
+
+void
+BGLView::_LockDraw()
+{
+	if (!fClipInfo || !fClipInfo->enable_direct_mode)
+		return;
+
+	fDrawLock.Lock();
+}
+
+
+void
+BGLView::_UnlockDraw()
+{
+	if (!fClipInfo || !fClipInfo->enable_direct_mode)
+		return;
+
+	fDrawLock.Unlock();
+}
+
+
+void
+BGLView::_CallDirectConnected()
+{
+	if (!fClipInfo)
+		return;
+
+	direct_buffer_info* localInfo = fClipInfo->direct_info;
+	direct_buffer_info* info = (direct_buffer_info*)malloc(
+		DIRECT_BUFFER_INFO_AREA_SIZE);
+	if (info == NULL)
+		return;
+
+	memcpy(info, localInfo, DIRECT_BUFFER_INFO_AREA_SIZE);
+
+	// Collect the rects into a BRegion, then clip to the view's bounds
+	BRegion region;
+	for (uint32 c = 0; c < localInfo->clip_list_count; c++)
+		region.Include(localInfo->clip_list[c]);
+	BRegion boundsRegion = fBounds.OffsetByCopy(localInfo->window_bounds.left,
+		localInfo->window_bounds.top);
+	info->window_bounds = boundsRegion.RectAtInt(0);
+		// window_bounds are now view bounds
+	region.IntersectWith(&boundsRegion);
+
+	info->clip_list_count = region.CountRects();
+	info->clip_bounds = region.FrameInt();
+
+	for (uint32 c = 0; c < info->clip_list_count; c++)
+		info->clip_list[c] = region.RectAtInt(c);
+	fRenderer->DirectConnected(info);
+	free(info);
+}
+
+
+//---- virtual reserved methods ----------
+
+
+void BGLView::_ReservedGLView1() {}
+void BGLView::_ReservedGLView2() {}
+void BGLView::_ReservedGLView3() {}
+void BGLView::_ReservedGLView4() {}
+void BGLView::_ReservedGLView5() {}
+void BGLView::_ReservedGLView6() {}
+void BGLView::_ReservedGLView7() {}
+void BGLView::_ReservedGLView8() {}
+
+
+// #pragma mark -
+
+
+// BeOS compatibility: contrary to others BView's contructors,
+// BGLView one wants a non-const name argument.
+BGLView::BGLView(BRect rect, char* name, ulong resizingMode, ulong mode,
+	ulong options)
+	:
+	BView(rect, name, B_FOLLOW_ALL_SIDES, mode | B_WILL_DRAW | B_FRAME_EVENTS),
+	fGc(NULL),
+	fOptions(options),
+	fDitherCount(0),
+	fDrawLock("BGLView draw lock"),
+	fDisplayLock("BGLView display lock"),
+	fClipInfo(NULL),
+	fRenderer(NULL),
+	fRoster(NULL),
+	fDitherMap(NULL)
+{
+	fRoster = new GLRendererRoster(this, options);
+}
+
+
+#if 0
+// TODO: implement BGLScreen class...
+
+
+BGLScreen::BGLScreen(char* name, ulong screenMode, ulong options,
+		status_t* error, bool debug)
+	:
+	BWindowScreen(name, screenMode, error, debug)
+{
+}
+
+
+BGLScreen::~BGLScreen()
+{
+}
+
+
+void
+BGLScreen::LockGL()
+{
+}
+
+
+void
+BGLScreen::UnlockGL()
+{
+}
+
+
+void
+BGLScreen::SwapBuffers()
+{
+}
+
+
+void
+BGLScreen::ErrorCallback(unsigned long errorCode)
+{
+	// Mesa's GLenum is not ulong but uint!
+	char msg[32];
+	sprintf(msg, "GL: Error code $%04lx.", errorCode);
+	// debugger(msg);
+	fprintf(stderr, "%s\n", msg);
+	return;
+}
+
+
+void
+BGLScreen::ScreenConnected(bool enabled)
+{
+}
+
+
+void
+BGLScreen::FrameResized(float width, float height)
+{
+	return BWindowScreen::FrameResized(width, height);
+}
+
+
+status_t
+BGLScreen::Perform(perform_code d, void* arg)
+{
+	return BWindowScreen::Perform(d, arg);
+}
+
+
+status_t
+BGLScreen::Archive(BMessage* data, bool deep) const
+{
+	return BWindowScreen::Archive(data, deep);
+}
+
+
+void
+BGLScreen::MessageReceived(BMessage* msg)
+{
+	BWindowScreen::MessageReceived(msg);
+}
+
+
+void
+BGLScreen::Show()
+{
+	BWindowScreen::Show();
+}
+
+
+void
+BGLScreen::Hide()
+{
+	BWindowScreen::Hide();
+}
+
+
+BHandler*
+BGLScreen::ResolveSpecifier(BMessage* msg, int32 index, BMessage* specifier,
+	int32 form, const char* property)
+{
+	return BWindowScreen::ResolveSpecifier(msg, index, specifier,
+		form, property);
+}
+
+
+status_t
+BGLScreen::GetSupportedSuites(BMessage* data)
+{
+	return BWindowScreen::GetSupportedSuites(data);
+}
+
+
+//---- virtual reserved methods ----------
+
+void BGLScreen::_ReservedGLScreen1() {}
+void BGLScreen::_ReservedGLScreen2() {}
+void BGLScreen::_ReservedGLScreen3() {}
+void BGLScreen::_ReservedGLScreen4() {}
+void BGLScreen::_ReservedGLScreen5() {}
+void BGLScreen::_ReservedGLScreen6() {}
+void BGLScreen::_ReservedGLScreen7() {}
+void BGLScreen::_ReservedGLScreen8() {}
+#endif
+
+
+const char* color_space_name(color_space space)
+{
+#define C2N(a)	case a:	return #a
+
+	switch (space) {
+	C2N(B_RGB24);
+	C2N(B_RGB32);
+	C2N(B_RGBA32);
+	C2N(B_RGB32_BIG);
+	C2N(B_RGBA32_BIG);
+	C2N(B_GRAY8);
+	C2N(B_GRAY1);
+	C2N(B_RGB16);
+	C2N(B_RGB15);
+	C2N(B_RGBA15);
+	C2N(B_CMAP8);
+	default:
+		return "Unknown!";
+	};
+
+#undef C2N
+};
+
+
+glview_direct_info::glview_direct_info()
+{
+	// TODO: See direct_window_data() in app_server's ServerWindow.cpp
+	direct_info = (direct_buffer_info*)calloc(1, DIRECT_BUFFER_INFO_AREA_SIZE);
+	direct_connected = false;
+	enable_direct_mode = false;
+}
+
+
+glview_direct_info::~glview_direct_info()
+{
+	free(direct_info);
+}
+