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engines/playground3d/gfx.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 PLAYGROUND3D_GFX_H
+#define PLAYGROUND3D_GFX_H
+
+#include "common/rect.h"
+#include "common/system.h"
+
+#include "math/frustum.h"
+#include "math/matrix4.h"
+#include "math/vector3d.h"
+
+#include "graphics/surface.h"
+#include "graphics/pixelformat.h"
+
+namespace Playground3d {
+
+struct TextureType {
+	enum type {
+		RGBA8888 = 0,
+		RGB888   = 1,
+		RGB565   = 2,
+		RGBA5551 = 3,
+		RGBA4444 = 4,
+		MAX      = 5
+	};
+};
+
+class Renderer {
+public:
+	Renderer(OSystem *system);
+	virtual ~Renderer();
+
+	virtual void init() = 0;
+	virtual void deinit() = 0;
+	virtual void clear(const Math::Vector4d &clearColor) = 0;
+
+	/**
+	 *  Swap the buffers, making the drawn screen visible
+	 */
+	virtual void flipBuffer() { }
+
+	Common::Rect viewport() const;
+
+	void setupCameraPerspective(float pitch, float heading, float fov);
+
+	static const int kOriginalWidth = 640;
+	static const int kOriginalHeight = 480;
+
+	void computeScreenViewport();
+
+	virtual void setupViewport(int x, int y, int width, int height) = 0;
+	virtual void loadTextureRGBA(Graphics::Surface *texture) = 0;
+	virtual void loadTextureRGB(Graphics::Surface *texture) = 0;
+	virtual void loadTextureRGB565(Graphics::Surface *texture) = 0;
+	virtual void loadTextureRGBA5551(Graphics::Surface *texture) = 0;
+	virtual void loadTextureRGBA4444(Graphics::Surface *texture) = 0;
+	virtual void drawCube(const Math::Vector3d &pos, const Math::Vector3d &roll) = 0;
+	virtual void drawPolyOffsetTest(const Math::Vector3d &pos, const Math::Vector3d &roll) = 0;
+	virtual void dimRegionInOut(float fade) = 0;
+	virtual void drawInViewport() = 0;
+	virtual void drawRgbaTexture() = 0;
+
+	virtual void enableFog(const Math::Vector4d &fogColor) = 0;
+	virtual void disableFog() = 0;
+
+	virtual void enableScissor(int x, int y, int width, int height) = 0;
+	virtual void disableScissor() = 0;
+
+protected:
+	OSystem *_system;
+
+	Common::Rect _screenViewport;
+
+	Math::Matrix4 _projectionMatrix;
+	Math::Matrix4 _modelViewMatrix;
+	Math::Matrix4 _mvpMatrix;
+
+	static const float cubeVertices[11 * 6 * 4];
+
+	Math::Matrix4 makeProjectionMatrix(float fov, float nearClip, float farClip) const;
+};
+
+Renderer *CreateGfxOpenGL(OSystem *system);
+Renderer *CreateGfxOpenGLShader(OSystem *system);
+Renderer *CreateGfxTinyGL(OSystem *system);
+Renderer *createRenderer(OSystem *system);
+
+} // End of namespace Playground3d
+
+#endif // PLAYGROUND3D_GFX_H