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128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
/* ResidualVM - A 3D game interpreter
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*
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* ResidualVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef GRAPHICS_OPENGL_TILED_SURFACE_H
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#define GRAPHICS_OPENGL_TILED_SURFACE_H
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#include "graphics/opengl/system_headers.h"
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#include "common/array.h"
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#include "common/rect.h"
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#include "graphics/surface.h"
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namespace OpenGL {
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class TextureGL;
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class SurfaceRenderer;
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/**
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* Surface implementation using OpenGL texture tiles
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*/
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class TiledSurface {
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public:
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TiledSurface(uint width, uint height, const Graphics::PixelFormat &pixelFormat);
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~TiledSurface();
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/**
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* Copy image data to the surface.
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*
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* The format of the input data needs to match the format returned by
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* getFormat.
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* This does not immediately updates the textures.
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*
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* @param x X coordinate of upper left corner to copy data to.
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* @param y Y coordinate of upper left corner to copy data to.
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* @param w Width of the image data to copy.
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* @param h Height of the image data to copy.
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* @param src Pointer to image data.
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* @param srcPitch The number of bytes in a row of the image data.
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*/
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void copyRectToSurface(const void *src, int srcPitch, int x, int y, int w, int h);
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/**
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* Update the OpenGL textures from the backing surface
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*/
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void update();
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/**
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* Draw as a 2D surface
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*
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* The destination rect is as follow :
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* x: left [0.0, 1.0] right
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* y: top [0.0, 1.0] bottom
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*
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* @param surfaceRenderer
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*/
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void draw(SurfaceRenderer *surfaceRenderer) const;
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/**
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* Fill the surface with a fixed color.
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*
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* @param color Color value in format returned by getFormat.
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*/
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void fill(uint32 color);
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/**
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* Get the backing surface
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*
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* This can be used to update the image data, but causes a full update.
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* Using copyRectToSurface is preferred
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*/
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Graphics::Surface *getBackingSurface();
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/**
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* Get the backing surface
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*
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* This const version can be used to read image data without causing
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* a full texture invalidation.
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*/
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const Graphics::Surface *getBackingSurface() const;
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/**
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* Get the dimensions in pixels of the surface
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*
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* This does not include the unused area in the textures at the edges
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* of the grid.
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*/
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uint16 getWidth() const { return _backingSurface.w; }
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uint16 getHeight() const { return _backingSurface.h; }
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private:
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static const uint maxTextureSize = 256;
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struct Tile {
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TextureGL *texture;
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Common::Rect rect;
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bool dirty;
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};
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Graphics::Surface _backingSurface;
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Common::Array<Tile> _tiles;
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void invalidateAllTiles();
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};
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} // End of namespace OpenGL
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#endif
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