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engines/grim/gfx_tinygl.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 GRIM_GFX_TINYGL_H
+#define GRIM_GFX_TINYGL_H
+
+#include "engines/grim/gfx_base.h"
+
+#include "graphics/tinygl/tinygl.h"
+
+namespace Graphics {
+struct Surface;
+}
+
+namespace Grim {
+
+class ModelNode;
+class Mesh;
+class MeshFace;
+
+class GfxTinyGL : public GfxBase {
+public:
+	GfxTinyGL();
+	virtual ~GfxTinyGL();
+
+	void setupScreen(int screenW, int screenH) override;
+
+	const char *getVideoDeviceName() override;
+
+	void setupCameraFrustum(float fov, float nclip, float fclip) override;
+	void positionCamera(const Math::Vector3d &pos, const Math::Vector3d &interest, float roll) override;
+	void positionCamera(const Math::Vector3d &pos, const Math::Matrix4 &rot) override;
+
+	Math::Matrix4 getModelView() override;
+	Math::Matrix4 getProjection() override;
+
+	void clearScreen() override;
+	void clearDepthBuffer() override;
+	void flipBuffer(bool opportunistic = false) override;
+
+	bool isHardwareAccelerated() override;
+	bool supportsShaders() override;
+
+	void getScreenBoundingBox(const Mesh *model, int *x1, int *y1, int *x2, int *y2) override;
+	void getScreenBoundingBox(const EMIModel *model, int *x1, int *y1, int *x2, int *y2) override;
+	void getActorScreenBBox(const Actor *actor, Common::Point &p1, Common::Point &p2) override;
+
+	void startActorDraw(const Actor *actor) override;
+	void finishActorDraw() override;
+	void setShadow(Shadow *shadow) override;
+	void drawShadowPlanes() override;
+	void setShadowMode() override;
+	void clearShadowMode() override;
+	void setShadowColor(byte r, byte g, byte b) override;
+	void getShadowColor(byte *r, byte *g, byte *b) override;
+
+	void set3DMode() override;
+
+	void translateViewpointStart() override;
+	void translateViewpoint(const Math::Vector3d &vec) override;
+	void rotateViewpoint(const Math::Angle &angle, const Math::Vector3d &axis) override;
+	void rotateViewpoint(const Math::Matrix4 &matrix) override;
+	void translateViewpointFinish() override;
+
+	void drawEMIModelFace(const EMIModel *model, const EMIMeshFace *face) override;
+	void drawModelFace(const Mesh *mesh, const MeshFace *face) override;
+	void drawSprite(const Sprite *sprite) override;
+
+	void enableLights() override;
+	void disableLights() override;
+	void setupLight(Light *light, int lightId) override;
+	void turnOffLight(int lightId) override;
+
+	void createTexture(Texture *texture, const uint8 *data, const CMap *cmap, bool clamp) override;
+	void selectTexture(const Texture *texture) override;
+	void destroyTexture(Texture *texture) override;
+
+	void createBitmap(BitmapData *bitmap) override;
+	void drawBitmap(const Bitmap *bitmap, int x, int y, uint32 layer) override;
+	void destroyBitmap(BitmapData *bitmap) override;
+
+	void createFont(Font *font) override;
+	void destroyFont(Font *font) override;
+
+	void drawTextObject(const TextObject *text) override;
+	void createTextObject(TextObject *text) override;
+	void destroyTextObject(TextObject *text) override;
+
+	void dimScreen() override;
+	void dimRegion(int x, int y, int w, int h, float level) override;
+	void irisAroundRegion(int x1, int y1, int x2, int y2) override;
+
+	Bitmap *getScreenshot(int w, int h, bool useStored) override;
+	void storeDisplay() override;
+	void copyStoredToDisplay() override;
+
+	void drawEmergString(int x, int y, const char *text, const Color &fgColor) override;
+	void loadEmergFont() override;
+
+	void drawRectangle(const PrimitiveObject *primitive) override;
+	void drawLine(const PrimitiveObject *primitive) override;
+	void drawPolygon(const PrimitiveObject *primitive) override;
+	void drawDimPlane() override;
+
+	const Graphics::PixelFormat getMovieFormat() const override;
+	void prepareMovieFrame(Graphics::Surface *frame) override;
+	void drawMovieFrame(int offsetX, int offsetY) override;
+	void releaseMovieFrame() override;
+
+	void setBlendMode(bool additive) override;
+
+protected:
+	void createSpecialtyTextureFromScreen(uint id, uint8 *data, int x, int y, int width, int height) override;
+
+private:
+	Graphics::PixelFormat _pixelFormat;
+	TinyGL::BlitImage *_emergFont[96];
+	TinyGL::BlitImage *_smushImage;
+	Graphics::Surface *_storedDisplay;
+	float _alpha;
+	const Actor *_currentActor;
+	TGLenum _depthFunc;
+
+	void readPixels(int x, int y, int width, int height, uint8 *buffer);
+};
+
+} // end of namespace Grim
+
+#endif