Initial commit

backends/graphics/ios/ios-graphics.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "backends/graphics/ios/ios-graphics.h"
+#include "backends/graphics/ios/renderbuffer.h"
+#include "backends/graphics/opengl/pipelines/pipeline.h"
+#include "backends/platform/ios7/ios7_osys_main.h"
+
+iOSGraphicsManager::iOSGraphicsManager() :
+	_insets{0, 0, 0, 0} {
+	initSurface();
+}
+
+iOSGraphicsManager::~iOSGraphicsManager() {
+	deinitSurface();
+}
+
+void iOSGraphicsManager::initSurface() {
+	OSystem_iOS7 *sys = dynamic_cast<OSystem_iOS7 *>(g_system);
+
+	// Create OpenGL context
+	GLuint rbo = sys->createOpenGLContext();
+
+	notifyContextCreate(OpenGL::kContextGLES2,
+	new OpenGL::RenderbufferTarget(rbo),
+	OpenGL::Texture::getRGBAPixelFormat(),
+	OpenGL::Texture::getRGBAPixelFormat());
+	handleResize(sys->getScreenWidth(), sys->getScreenHeight());
+
+	_old_touch_mode = kTouchModeTouchpad;
+
+	// not in 3D, not in GUI
+	sys->applyTouchSettings(false, false);
+}
+
+void iOSGraphicsManager::deinitSurface() {
+	notifyContextDestroy();
+	dynamic_cast<OSystem_iOS7 *>(g_system)->destroyOpenGLContext();
+}
+
+void iOSGraphicsManager::notifyResize(const int width, const int height) {
+	handleResize(width, height);
+}
+
+bool iOSGraphicsManager::loadVideoMode(uint requestedWidth, uint requestedHeight, bool resizable, int antialiasing) {
+	// As GLES2 provides FBO, OpenGL graphics manager must ask us for a resizable surface
+	assert(resizable);
+	if (antialiasing != 0) {
+		warning("Requesting antialiased video mode while not available");
+	}
+
+	/* The iOS and tvOS video modes are always full screen */
+	return true;
+}
+
+void iOSGraphicsManager::showOverlay(bool inGUI) {
+	if (_overlayVisible && inGUI == _overlayInGUI)
+		return;
+
+	// Don't change touch mode when not changing mouse coordinates
+	if (inGUI) {
+		_old_touch_mode = dynamic_cast<OSystem_iOS7 *>(g_system)->getCurrentTouchMode();
+		// not in 3D, in overlay
+		dynamic_cast<OSystem_iOS7 *>(g_system)->applyTouchSettings(false, true);
+	} else if (_overlayInGUI) {
+		// Restore touch mode active before overlay was shown
+		dynamic_cast<OSystem_iOS7 *>(g_system)->setCurrentTouchMode(static_cast<TouchMode>(_old_touch_mode));
+	}
+
+	OpenGL::OpenGLGraphicsManager::showOverlay(inGUI);
+}
+
+void iOSGraphicsManager::hideOverlay() {
+	if (_overlayInGUI) {
+		// Restore touch mode active before overlay was shown
+		dynamic_cast<OSystem_iOS7 *>(g_system)->setCurrentTouchMode(static_cast<TouchMode>(_old_touch_mode));
+	}
+
+	OpenGL::OpenGLGraphicsManager::hideOverlay();
+}
+
+float iOSGraphicsManager::getHiDPIScreenFactor() const {
+	return dynamic_cast<OSystem_iOS7 *>(g_system)->getSystemHiDPIScreenFactor();
+}
+
+void iOSGraphicsManager::refreshScreen() {
+	dynamic_cast<OSystem_iOS7 *>(g_system)->refreshScreen();
+}
+
+bool iOSGraphicsManager::notifyMousePosition(Common::Point &mouse) {
+	mouse.x = CLIP<int16>(mouse.x, _activeArea.drawRect.left, _activeArea.drawRect.right);
+	mouse.y = CLIP<int16>(mouse.y, _activeArea.drawRect.top, _activeArea.drawRect.bottom);
+
+	setMousePosition(mouse.x, mouse.y);
+	mouse = convertWindowToVirtual(mouse.x, mouse.y);
+
+	return true;
+}

backends/graphics/ios/ios-graphics.h

@@ -0,0 +1,62 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef BACKENDS_GRAPHICS_IOS_IOS_GRAPHICS_H
+#define BACKENDS_GRAPHICS_IOS_IOS_GRAPHICS_H
+
+#include "common/scummsys.h"
+#include <OpenGLES/ES2/gl.h>
+
+#include "backends/graphics/opengl/opengl-graphics.h"
+
+class iOSGraphicsManager :
+  public OpenGL::OpenGLGraphicsManager {
+public:
+	iOSGraphicsManager();
+	virtual ~iOSGraphicsManager();
+
+	void initSurface();
+	void deinitSurface();
+
+	void notifyResize(const int width, const int height);
+
+	bool notifyMousePosition(Common::Point &mouse);
+	Common::Point getMousePosition() { return Common::Point(_cursorX, _cursorY); }
+
+	float getHiDPIScreenFactor() const override;
+
+	void setSafeAreaInsets(int l, int r, int t, int b) { _insets.left = l; _insets.top = t; _insets.right = r; _insets.bottom = b; }
+	WindowedGraphicsManager::Insets getSafeAreaInsets() const override { return _insets; }
+
+protected:
+	void setSystemMousePosition(const int x, const int y) override {}
+
+	bool loadVideoMode(uint requestedWidth, uint requestedHeight, bool resizable, int antialiasing) override;
+	void showOverlay(bool inGUI) override;
+	void hideOverlay() override;
+
+	void refreshScreen() override;
+
+	int _old_touch_mode;
+	WindowedGraphicsManager::Insets _insets;
+};
+
+#endif

backends/graphics/ios/renderbuffer.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "backends/graphics/ios/renderbuffer.h"
+#include "graphics/opengl/debug.h"
+
+namespace OpenGL {
+
+//
+// Render to backbuffer target implementation
+//
+RenderbufferTarget::RenderbufferTarget(GLuint renderbufferID)
+	: _glRBO(renderbufferID), _glFBO(0) {
+}
+
+RenderbufferTarget::~RenderbufferTarget() {
+	GL_CALL_SAFE(glDeleteFramebuffers, (1, &_glFBO));
+}
+
+void RenderbufferTarget::activateInternal() {
+	bool needUpdate = false;
+
+	// Allocate framebuffer object if necessary.
+	if (!_glFBO) {
+		GL_CALL(glGenFramebuffers(1, &_glFBO));
+		needUpdate = true;
+	}
+
+	// Attach FBO to rendering context.
+	GL_CALL(glBindFramebuffer(GL_FRAMEBUFFER, _glFBO));
+
+	// Attach render buffer to newly created FBO.
+	if (needUpdate) {
+		GL_CALL(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, _glRBO));
+	}
+}
+
+bool RenderbufferTarget::setSize(uint width, uint height) {
+	// Set viewport dimensions.
+	_viewport[0] = 0;
+	_viewport[1] = 0;
+	_viewport[2] = width;
+	_viewport[3] = height;
+
+	// Setup orthogonal projection matrix.
+	_projectionMatrix(0, 0) =  2.0f / width;
+	_projectionMatrix(0, 1) =  0.0f;
+	_projectionMatrix(0, 2) =  0.0f;
+	_projectionMatrix(0, 3) =  0.0f;
+
+	_projectionMatrix(1, 0) =  0.0f;
+	_projectionMatrix(1, 1) = -2.0f / height;
+	_projectionMatrix(1, 2) =  0.0f;
+	_projectionMatrix(1, 3) =  0.0f;
+
+	_projectionMatrix(2, 0) =  0.0f;
+	_projectionMatrix(2, 1) =  0.0f;
+	_projectionMatrix(2, 2) =  0.0f;
+	_projectionMatrix(2, 3) =  0.0f;
+
+	_projectionMatrix(3, 0) = -1.0f;
+	_projectionMatrix(3, 1) =  1.0f;
+	_projectionMatrix(3, 2) =  0.0f;
+	_projectionMatrix(3, 3) =  1.0f;
+
+	// Directly apply changes when we are active.
+	if (isActive()) {
+		applyViewport();
+		applyProjectionMatrix();
+	}
+	return true;
+}
+
+} // End of namespace OpenGL

backends/graphics/ios/renderbuffer.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef BACKENDS_GRAPHICS_IOS_RENDERBUFFER_H
+#define BACKENDS_GRAPHICS_IOS_RENDERBUFFER_H
+
+#include "backends/graphics/opengl/framebuffer.h"
+
+namespace OpenGL {
+
+/**
+ * Render to renderbuffer framebuffer implementation.
+ *
+ * This target allows to render to a renderbuffer, which can then be used as
+ * a rendering source like expected on iOS.
+ */
+class RenderbufferTarget : public Framebuffer {
+public:
+	RenderbufferTarget(GLuint renderbufferID);
+	~RenderbufferTarget() override;
+
+	/**
+	 * Set size of the render target.
+	 */
+	bool setSize(uint width, uint height) override;
+
+protected:
+	void activateInternal() override;
+
+private:
+	GLuint _glRBO;
+	GLuint _glFBO;
+};
+
+} // End of namespace OpenGL
+
+#endif