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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 "common/textconsole.h"
#if defined(USE_OPENGL_GAME) || defined(USE_OPENGL_SHADERS)
#include "backends/graphics3d/opengl/tiledsurface.h"
#include "backends/graphics3d/opengl/surfacerenderer.h"
#include "backends/graphics3d/opengl/texture.h"
namespace OpenGL {
TiledSurface::TiledSurface(uint width, uint height, const Graphics::PixelFormat &pixelFormat) {
_backingSurface.create(width, height, pixelFormat);
for (uint y = 0; y < height; y += maxTextureSize) {
for (uint x = 0; x < width; x += maxTextureSize) {
uint textureWidth = (x + maxTextureSize >= width) ? (width - x) : maxTextureSize;
uint textureHeight = (y + maxTextureSize >= height) ? (height - y) : maxTextureSize;
_tiles.push_back(Tile());
Tile &tile = _tiles.back();
tile.rect = Common::Rect(textureWidth, textureHeight);
tile.rect.translate(x, y);
tile.texture = nullptr;
tile.dirty = true;
}
}
}
TiledSurface::~TiledSurface() {
for (uint i = 0; i < _tiles.size(); i++) {
delete _tiles[i].texture;
}
_backingSurface.free();
}
void TiledSurface::copyRectToSurface(const void *src, int srcPitch, int x, int y, int w, int h) {
_backingSurface.copyRectToSurface(src, srcPitch, x, y, w, h);
Common::Rect destRect = Common::Rect(w, h);
destRect.translate(x, y);
for (uint i = 0; i < _tiles.size(); i++) {
if (_tiles[i].rect.intersects(destRect) || _tiles[i].rect.contains(destRect)) {
_tiles[i].dirty = true;
}
}
}
void TiledSurface::update() {
for (uint i = 0; i < _tiles.size(); i++) {
Tile &tile = _tiles[i];
if (tile.dirty) {
Graphics::Surface subSurface = _backingSurface.getSubArea(tile.rect);
delete tile.texture;
tile.texture = new TextureGL(subSurface);
tile.dirty = false;
}
}
}
void TiledSurface::draw(SurfaceRenderer *surfaceRenderer) const {
for (uint i = 0; i < _tiles.size(); i++) {
const Tile &tile = _tiles[i];
assert(tile.texture);
assert(!tile.dirty);
Math::Vector2d topLeft = Math::Vector2d(tile.rect.left / (float)_backingSurface.w, tile.rect.top / (float)_backingSurface.h);
Math::Vector2d bottomRight = Math::Vector2d(tile.rect.right / (float)_backingSurface.w, tile.rect.bottom / (float)_backingSurface.h);
surfaceRenderer->render(tile.texture, Math::Rect2d(topLeft, bottomRight));
}
}
void TiledSurface::fill(uint32 color) {
Common::Rect rect = Common::Rect(_backingSurface.w, _backingSurface.h);
_backingSurface.fillRect(rect, color);
invalidateAllTiles();
}
void TiledSurface::invalidateAllTiles() {
for (uint i = 0; i < _tiles.size(); i++) {
_tiles[i].dirty = true;
}
}
Graphics::Surface *TiledSurface::getBackingSurface() {
invalidateAllTiles();
return &_backingSurface;
}
const Graphics::Surface *TiledSurface::getBackingSurface() const {
return &_backingSurface;
}
} // End of namespace OpenGL
#endif
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