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https://github.com/scummvm/scummvm.git
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100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "engines/stark/gfx/tinyglsurface.h"
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#include "engines/stark/gfx/tinyglbitmap.h"
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#include "graphics/tinygl/tinygl.h"
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namespace Stark {
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namespace Gfx {
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TinyGLSurfaceRenderer::TinyGLSurfaceRenderer(TinyGLDriver *gfx) :
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SurfaceRenderer(),
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_gfx(gfx) {
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}
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TinyGLSurfaceRenderer::~TinyGLSurfaceRenderer() {
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}
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void TinyGLSurfaceRenderer::render(const Bitmap *bitmap, const Common::Point &dest) {
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render(bitmap, dest, bitmap->width(), bitmap->height());
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}
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void TinyGLSurfaceRenderer::render(const Bitmap *bitmap, const Common::Point &dest, uint width, uint height) {
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if (width == 0 || height == 0)
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return;
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_gfx->start2DMode();
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Math::Vector2d sizeWH;
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if (_noScalingOverride) {
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sizeWH = normalizeCurrentCoordinates(width, height);
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} else {
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sizeWH = normalizeOriginalCoordinates(width, height);
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}
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auto verOffsetXY = normalizeOriginalCoordinates(dest.x, dest.y);
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auto nativeViewport = _gfx->getViewport();
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auto viewport = Math::Vector2d(nativeViewport.width(), nativeViewport.height());
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auto blitImage = ((TinyGlBitmap *)const_cast<Bitmap *>(bitmap))->getBlitImage();
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int blitImageWidth, blitImageHeight;
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tglGetBlitImageSize(blitImage, blitImageWidth, blitImageHeight);
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int posX = viewport.getX() * verOffsetXY.getX() + nativeViewport.left;
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int posY = viewport.getY() * verOffsetXY.getY() + nativeViewport.top;
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TinyGL::BlitTransform transform(posX, posY);
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// W/A for not clipped bitmaps in prompt dialog
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if (width == 256 && height == 256) {
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blitImageHeight = viewport.getY() - dest.y;
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blitImageWidth = viewport.getX() - dest.x;
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}
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transform.sourceRectangle(0, 0, blitImageWidth, blitImageHeight);
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// W/A for 1x1 dimension bitmap
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// it needs new filled and scaled bitmap based on one pixel color
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if (blitImageWidth == 1 && blitImageHeight == 1) {
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auto pixelColor = ((TinyGlBitmap *)const_cast<Bitmap *>(bitmap))->get1x1Color();
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Graphics::Surface surface;
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surface.create(width, height, Driver::getRGBAPixelFormat());
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surface.fillRect(Common::Rect(0, 0, width, height), pixelColor);
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tglUploadBlitImage(blitImage, surface, 0, false);
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surface.free();
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}
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transform.tint(1.0, 1.0 - _fadeLevel, 1.0 - _fadeLevel, 1.0 - _fadeLevel);
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tglBlit(blitImage, transform);
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_gfx->end2DMode();
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}
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Math::Vector2d TinyGLSurfaceRenderer::normalizeOriginalCoordinates(int x, int y) const {
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Common::Rect viewport = _gfx->getUnscaledViewport();
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return Math::Vector2d(x / (float)viewport.width(), y / (float)viewport.height());
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}
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Math::Vector2d TinyGLSurfaceRenderer::normalizeCurrentCoordinates(int x, int y) const {
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Common::Rect viewport = _gfx->getViewport();
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return Math::Vector2d(x / (float)viewport.width(), y / (float)viewport.height());
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}
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} // End of namespace Gfx
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} // End of namespace Stark
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