78 lines
2.5 KiB
C++
78 lines
2.5 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 AUTHORS
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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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#include "engines/stark/gfx/openglssurface.h"
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#include "engines/stark/gfx/opengls.h"
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#include "engines/stark/gfx/texture.h"
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#include "graphics/opengl/shader.h"
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namespace Stark {
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namespace Gfx {
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OpenGLSSurfaceRenderer::OpenGLSSurfaceRenderer(OpenGLSDriver *gfx) :
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SurfaceRenderer(),
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_gfx(gfx) {
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_shader = _gfx->createSurfaceShaderInstance();
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}
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OpenGLSSurfaceRenderer::~OpenGLSSurfaceRenderer() {
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delete _shader;
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}
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void OpenGLSSurfaceRenderer::render(const Texture *texture, const Common::Point &dest) {
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// Destination rectangle
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const float sLeft = dest.x;
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const float sTop = dest.y;
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const float sWidth = texture->width();
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const float sHeight = texture->height();
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_gfx->start2DMode();
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_shader->use();
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_shader->setUniform1f("fadeLevel", _fadeLevel);
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_shader->setUniform("verOffsetXY", normalizeOriginalCoordinates(sLeft, sTop));
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if (_noScalingOverride) {
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_shader->setUniform("verSizeWH", normalizeCurrentCoordinates(sWidth, sHeight));
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} else {
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_shader->setUniform("verSizeWH", normalizeOriginalCoordinates(sWidth, sHeight));
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}
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texture->bind();
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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_gfx->end2DMode();
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}
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Math::Vector2d OpenGLSSurfaceRenderer::normalizeOriginalCoordinates(float x, float 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 OpenGLSSurfaceRenderer::normalizeCurrentCoordinates(float x, float 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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